Analog front end linearization

Abstract

Methods, systems, and devices are described for wireless communication. A user equipment (UE) can transmit a first message indicating a capability to linearize a digital signal output by an analog front end of the UE, the digital signal being associated with a first transmission. The UE can receive the first transmission, the first transmission being associated with a gain state, the gain state including a set of configurations associated with a plurality of amplifiers at the UE, and the UE can linearize the digital signal associated with the first transmission based at least in part on the gain state, where linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the analog front end. In some examples, the UE can obtain the output voltage value from a lookup table (LUT) of a set of LUTs configured to the UE or generated by the UE.

Description

[0001] Cross-referencing

[0002] This patent application claims priority to U.S. Patent Application No. 18 / 333,411, entitled “ANALOG FRONTEND LINEARIZATION”, filed June 12, 2023, by Gutman et al., which has been assigned to the assignee of this invention and is expressly incorporated herein by reference. Technical Field

[0003] The following discussion relates to wireless communication, including analog front-end linearization. Background Technology

[0004] 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 may employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (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, each supporting wireless communication for communication devices, which may be referred to as User Equipment (UE). Summary of the Invention

[0005] The described technology relates to improved methods, systems, devices, and apparatuses for supporting analog front-end linearization. For example, the described technology provides a UE to transmit a first message indicating the ability to linearize a digital signal output by a receiving analog front-end associated with a first transmission. The UE can receive the first transmission associated with a gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE, and the UE can linearize the digital signal associated with the first transmission at least in part based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the analog front-end. In some examples, the UE can obtain the output voltage value from a set of lookup tables (LUTs) configured into or generated by the UE.

[0006] A method for wireless communication by a UE is described. The method may include: transmitting a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission; receiving the first transmission, the first transmission being associated with a gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE; and linearizing the digital signal associated with the first transmission based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end.

[0007] A UE for wireless communication is described. The UE may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured individually or collectively to: transmit a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission; receive the first transmission, the first transmission being associated with a gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE; and linearize the digital signal associated with the first transmission based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end.

[0008] Another UE for wireless communication is described. The UE may include: components for transmitting a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission; components for receiving the first transmission, the first transmission being associated with a gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE; and components for linearizing the digital signal associated with the first transmission based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end.

[0009] A non-transitory computer-readable medium storing code is described. The code may include instructions executable by a processor to perform: sending a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of a UE, the digital signal being associated with a first transmission; receiving the first transmission, the first transmission being associated with a gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE; and linearizing the digital signal associated with the first transmission based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end.

[0010] In some examples of the methods, UEs, and non-transitory computer-readable media described herein, linearized digital signals may include operations, features, components, or instructions for obtaining an output voltage value corresponding to an input voltage value based on a first lookup table in a set of lookup tables associated with a gain state.

[0011] In some examples of the methods, UEs, and non-transitory computer-readable media described herein, obtaining an input voltage value may include operations, features, components, or instructions for obtaining the input voltage value from a first lookup table based on a signal-to-noise ratio associated with a noise index corresponding to a digital signal.

[0012] The methods, UEs, and some examples of non-transitory computer-readable media described herein may further include operations, features, components, or instructions for receiving a second message indicating a frequency domain allocation for a first transmission based on the transmission of a first message, wherein the second message instructs the UE to linearize a digital signal.

[0013] The methods, UEs, and some examples of non-transitory computer-readable media described herein may further include operations, features, components, or instructions for sending a third message indicating the ability to mitigate blocking frequency bands based on linearized digital signals.

[0014] Some examples of the methods, UEs, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for receiving a fourth message indicating a frequency domain allocation based on a third message, wherein the frequency domain allocation indicates at least one frequency band adjacent to the blocking frequency band.

[0015] The methods, UEs, and some examples of non-transitory computer-readable media described herein may further include operations, features, components, or instructions for linearizing digital signals based on a detected temperature exceeding a threshold.

[0016] The methods, UEs, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for linearizing digital signals based on detecting changes in gain states and receiving analog front-ends including at least that set of multiple amplifiers at the UE.

[0017] The methods, UEs, and some examples of non-transitory computer-readable media described herein may further include operations, features, components, or instructions for linearizing digital signals based on detecting a change in the signal-to-noise ratio associated with the digital signal, and the change in the signal-to-noise ratio may be based on a change in gain state, a change in temperature, or both.

[0018] A method for wireless communication at a network entity is described. The method may include: receiving a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of a UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end; and transmitting a second message based on receiving the first message indicating a frequency domain allocation for the first transmission, wherein the second message instructs the UE to linearize the digital signal.

[0019] A network entity for wireless communication is described. The network entity may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured individually or jointly to: receive a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of a UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end; and, based on receiving the first message, transmit a second message indicating a frequency domain allocation for the first transmission, wherein the second message instructs the UE to linearize the signal into a digital signal.

[0020] Another network entity for wireless communication is described. This network entity may include: components for receiving a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of a UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end; and components for transmitting a second message indicating a frequency domain allocation for the first transmission based on receiving the first message, wherein the second message instructs the UE to linearize the digital signal.

[0021] A non-transitory computer-readable medium storing code is described. The code may include instructions executable by a processor to perform: receiving a first message instructing the ability to linearize a digital signal output by a receiving analog front-end of a UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end; and transmitting a second message based on receiving the first message instructing a frequency domain allocation for the first transmission, wherein the second message instructs the UE to linearize the digital signal.

[0022] The methods, network entities, and some examples of non-transitory computer-readable media described herein may further include operations, features, components, or instructions for receiving a third message indicating the ability to mitigate blocking frequency bands based on linearized digital signals.

[0023] In some examples of the methods, network entities, and non-transitory computer-readable media described herein, frequency domain allocation is based on receiving a third message to indicate at least one frequency band adjacent to the blocking frequency band.

[0024] Examples of the methods, network entities, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for: receiving a request message to transmit a training signal at a transmission power below a threshold power, the training signal being associated with one or more parameters for estimating a digital signal output by the UE's analog front-end for linearization; and in response to the request message to transmit a message indicating that the UE is permitted to transmit the training signal at a transmission power of one or more symbols.

[0025] In some examples of the methods, network entities, and non-transitory computer-readable media described herein, one or more parameters include amplitude modulation (AM) to AM distortion, AM to phase modulation (PM) distortion, a target gain value associated with the UE's analog-to-digital converter, or any combination thereof.

[0026] In some examples of the methods, network entities, and non-transitory computer-readable media described herein, the second message instructs the UE to linearize digital signals based on the detection that a temperature change at the UE exceeds a threshold.

[0027] In some examples of the methods, network entities, and non-transitory computer-readable media described herein, the second message instructs the UE to linearize digital signals based on the detection of a change in the gain state of the receiving analog front-end, the gain state comprising a set of configurations associated with a set of multiple amplifiers at the UE, and the receiving analog front-end comprising a set of multiple amplifiers.

[0028] In some examples of the methods, network entities, and non-transitory computer-readable media described herein, the second message instructs the UE to linearize the digital signal based on the detection of a change in the signal-to-noise ratio associated with the digital signal, and the change in the signal-to-noise ratio may be based on a change in gain state, a change in temperature, or both.

[0029] A method for wireless communication at a UE is described. The method may include: sending a request message to transmit a training signal at a transmission power below a threshold transmission power, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by a receiving analog front-end of the UE; transmitting the training signal at the transmission power based on the request message; and measuring the training signal to estimate the one or more parameters.

[0030] A UE for wireless communication is described. The UE may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured individually or collectively to: transmit a request message at a transmission power below a threshold transmission power, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by a receiving analog front-end of the UE; transmit the training signal at the transmission power based on the transmission request message; and measure the training signal to estimate one or more parameters.

[0031] Another UE for wireless communication is described. The UE may include: components for transmitting a training signal at a transmission power below a threshold transmission power by sending a request message, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by the UE's analog front-end receiver; components for transmitting the training signal at the transmission power based on the request message; and components for measuring the training signal to estimate one or more parameters.

[0032] A non-transitory computer-readable medium storing code is described. The code may include instructions executable by a processor to: transmit a request message to transmit a training signal at a transmission power below a threshold transmission power, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by a receiver analog front-end of a UE; transmit the training signal at the transmission power based on the request message; and measure the training signal to estimate one or more parameters.

[0033] The methods, UEs, and some examples of non-transitory computer-readable media described herein may further include operations, features, components, or instructions for receiving a message indicating that the UE may transmit a training signal at a transmit power of one or more symbols in response to a request message, wherein the training signal may be transmitted during one or more symbols.

[0034] In some examples of the methods, UEs, and nontransitory computer-readable media described herein, estimating one or more parameters may include operations, features, components, or instructions for generating a set of lookup tables, each of which corresponds to a gain state and includes a set of multiple output voltage values ​​corresponding to a set of multiple input voltage values ​​associated with a receiving analog front end.

[0035] Examples of the methods, UEs, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for: receiving a first transmission, the first transmission being associated with a first gain state, the first gain state including a set of configurations associated with a set of multiple amplifiers at the UE; and linearizing a digital signal associated with the first transmission based on the first gain state and a first lookup table corresponding to the first gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with a receiving analog front end from the first lookup table.

[0036] Examples of the methods, UEs, and non-transitory computer-readable media described herein may further include operations, features, components, or instructions for: estimating amplitude modulation (AM) to AM distortion, AM to phase modulation (PM) distortion, or both; and estimating a target gain value based on AM to AM distortion, AM to PM distortion, or both, wherein a group lookup table may be generated based on the estimated target gain value.

[0037] In some examples of the methods, UEs, and non-transitory computer-readable media described herein, the training signal may be linearly based on the transmission power of the training signal. Attached Figure Description

[0038] Figure 1 Examples of wireless communication systems supporting analog front-end linearization are shown according to one or more aspects of this disclosure.

[0039] Figure 2 Examples of wireless communication systems supporting analog front-end linearization are shown according to one or more aspects of this disclosure.

[0040] Figure 3 An example of a functional block diagram of a receiver circuit supporting analog front-end linearization according to one or more aspects of this disclosure is shown.

[0041] Figure 4 Examples of graphs supporting simulated front-end linearization according to one or more aspects of this disclosure are shown.

[0042] Figure 5 An example of a process flow supporting the simulation of front-end linearization is shown according to one or more aspects of this disclosure.

[0043] Figure 6 and Figure 7 A block diagram of a device supporting analog front-end linearization according to one or more aspects of this disclosure is shown.

[0044] Figure 8 A block diagram is shown of a communication manager that supports analog front-end linearization according to one or more aspects of this disclosure.

[0045] Figure 9 A diagram illustrates a system including a device supporting analog front-end linearization, according to one or more aspects of this disclosure.

[0046] Figure 10 and Figure 11 A block diagram of a device supporting analog front-end linearization according to one or more aspects of this disclosure is shown.

[0047] Figure 12 A block diagram is shown of a communication manager that supports analog front-end linearization according to one or more aspects of this disclosure.

[0048] Figure 13 A diagram illustrates a system including a device supporting analog front-end linearization, according to one or more aspects of this disclosure.

[0049] Figures 14 to 19 A flowchart illustrating a method for supporting simulated front-end linearization according to one or more aspects of this disclosure is shown. Detailed Implementation

[0050] In some examples, the receiving UE may experience noise and nonlinearity originating from one or more components of the UE, which can adversely affect the signal-to-noise ratio (SNR) of the received signal. In some cases, components of the UE's analog front-end can be sources of nonlinearity, including components associated with processing the analog signal related to the upcoming transmission, such as multiple amplifiers, phase shifters, combiners, mixers, and other components. This can lead to a decrease in the SNR of the signal when the UE processes the signal in the digital domain after the analog front-end, potentially resulting in degraded reception quality and an increased risk of retransmission. Therefore, techniques to reduce the nonlinear effects of the analog front-end may be desired to improve reception and the SNR associated with the received signal.

[0051] According to the examples described herein, a UE may implement a linearizer for linearizing a digital signal output from the UE's analog front-end. The linearizer may be or include a set of LUTs, such as memoryless LUTs, and the UE may obtain (e.g., read, look up) an output voltage value (e.g., for the next component in the digital front-end) based on an input voltage value associated with the digital signal. In some examples, each LUT in this set may correspond to a gain state associated with the digital signal, and this gain state may be one of a set of gain states (e.g., 16 gain states) configured to UE 115-a, each gain state corresponding to a set of configurations associated with multiple amplifiers of UE 115-a (e.g., within the analog front-end). To linearize the digital signal, the UE may select a LUT based on the current gain state of the multiple amplifiers. In some cases, each LUT may have a different output voltage value corresponding to a different SNR value. Therefore, the UE can linearize the digital signal at the output of the analog front-end, thereby reducing nonlinearity caused by the components of the analog front-end and increasing the SNR associated with transmission and reception.

[0052] In some examples, the UE may send a message to the network entity instructing it to perform linearization. Further, the UE may instruct its ability to mitigate blocking frequencies based on the performance of linearization. Thus, the network entity may perform frequency allocation accordingly, and if the UE instructs to mitigate blocking frequencies, the network entity may allocate frequencies adjacent to the blocking frequencies. In some examples, the UE may perform training of the linearizer, which may involve transmitting and measuring the training signal to determine one or more parameters and generating the set of LUTs. In some cases, to ensure that the training signal is linear (e.g., not subjected to nonlinearity), the UE may send a request message to the network entity to transmit the training signal at a transmission power below a threshold transmission power (e.g., the minimum transmission power the UE can withstand). The network entity may send a message allowing the UE to transmit the training signal at a transmission power of one or more symbols, and the UE may transmit the training signal for one or more symbols. Thus, the UE may perform the linearizer training process and generate the set of LUTs.

[0053] The aspects of this disclosure are first described in the context of a wireless communication system. Additionally, aspects of this disclosure are described in the context of receiver circuitry, diagrams, and flowcharts related to analog front-end linearization. The aspects of this disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flowcharts related to analog front-end linearization.

[0054] Figure 1Examples of a wireless communication system 100 supporting analog front-end linearization according to one or more aspects of this disclosure are shown. The wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating under other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0055] Network entity 105 may be distributed across a geographical area to form wireless communication system 100, and may include devices employing different forms or having different capabilities. In various examples, network entity 105 may be referred to as a network element, mobility element, radio access network (RAN) node, or network equipment, among other designations. In some examples, network entity 105 and UE 115 may wirelessly communicate via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, network entity 105 may support coverage area 110 (e.g., a geographical coverage area) within which UE 115 and network entity 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographical area within which network entity 105 and UE 115 may support the transmission of signals according to one or more radio access technologies (RATs).

[0056] UE 115 can be distributed throughout the coverage area 110 of wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. UE 115 can be devices in different forms or with different capabilities. Figure 1 Some example UE 115s are illustrated herein. The UE 115 described herein can be able to support various types of devices (such as, e.g., ...). Figure 1 It communicates with other UEs (115 or network entity 105) as shown.

[0057] As described herein, nodes of the wireless communication system 100 (which may be referred to as network nodes or wireless nodes) may be network entity 105 (e.g., any network entity described herein), UE 115 (e.g., any UE described herein), network controller, apparatus, device, computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be UE 115. Alternatively, a node may be network entity 105. Furthermore, a first node may be configured to communicate with a second or third node. In one aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be UE 115. In another aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be network entity 105. In other aspects of this example, the first node, the second node, and the third node may be different from these examples. Similarly, references to UE 115, network entity 105, device, equipment, computing system, etc., may include disclosures of UE 115, network entity 105, device, equipment, computing system, etc., as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that a first node is configured to receive information from a second node.

[0058] In some examples, network entity 105 may communicate with core network 130, or network entity 105 may communicate with each other, or both. For example, network entity 105 may communicate with core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3, or other interface protocols). In some examples, network entity 105 may communicate with each other directly (e.g., directly between network entities 105) or indirectly (e.g., via core network 130) via backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols). In some examples, network entity 105 may communicate with each other via midhaul communication link 162 (e.g., according to midhaul interface protocol) or fronthaul communication link 168 (e.g., according to fronthaul interface protocol) or any combination thereof. Backhaul communication link 120, midhaul communication link 162, or fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, fiber optic links), one or more wireless links (e.g., radio links, wireless optical links), etc., or various combinations thereof. UE 115 can communicate with core network 130 via communication link 155.

[0059] One or more network entities in network entity 105 described herein may include or be referred to as base station 140 (e.g., transceiver base station, radio base station, NR base station, access point, radio transceiver, node B, eNodeB (eNB), next-generation node B or gigabit node B (any of which may be referred to as gNB), 5G NB, next-generation eNB (ng-eNB), home node B, home evolution node B, or other suitable terms). In some examples, network entity 105 (e.g., base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture that may be configured to utilize a protocol stack physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as base station 140).

[0060] In some examples, network entity 105 may be implemented in a decomposed architecture (e.g., a decomposed base station architecture, a decomposed RAN architecture) that can be configured to utilize protocol stacks physically or logically distributed across two or more network entities 105 (such as an Integrated Access Backhaul (IAB) network, an Open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a Virtualized RAN (vRAN) (e.g., a Cloud RAN (C-RAN)). For example, network entity 105 may include one or more of the following: a Central Unit (CU) 160, a Distributed Unit (DU) 165, a Radio Unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a near-real-time RIC, a non-real-time RIC), a Service Management and Orchestration (SMO) 180 system, or any combination thereof. 170 may also be referred to as a radio headend, intelligent radio headend, remote radio headend (RRH), remote radio unit (RRU), or transmit / receive point (TRP). One or more components of network entity 105 in a decomposed RAN architecture may be co-located, or one or more components of network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 in a decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0061] The functional splitting among CU 160, DU 165, and RU 170 is flexible and can support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a protocol stack functional splitting can be used between CU 160 and DU 165, allowing CU 160 to support one or more layers of the protocol stack, and DU 165 to support one or more different layers of the protocol stack. In some examples, CU 160 can host higher protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functionalities and signaling (e.g., Radio Resource Control (RRC), Serving Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP)). CU 160 can connect to one or more DU 165 or RU 170, and one or more DU 165 or RU 170 can host lower protocol layers, such as Layer 1 (L1) (e.g., Physical (PHY) layer) or L2 (e.g., Radio Link Control (RLC) layer, Medium Access Control (MAC) layer) functionality and signaling, and each can be at least partially controlled by CU 160. Additionally or alternatively, a protocol stack functional split can be employed between DU 165 and RU 170, such that DU 165 can support one or more layers of the protocol stack, and RU 170 can support one or more different layers of the protocol stack. DU 165 can support one or more different cells (e.g., via one or more RU 170). In some cases, functional decomposition between CU 160 and DU 165, or between DU 165 and RU 170, can be performed within the protocol layer (e.g., some functions of the protocol layer can be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer can be performed by different of CU 160, DU 165, or RU 170). CU 160 can be further functionally decomposed into CU control plane (CU-CP) and CU user plane (CU-UP) functions. CU 160 can be connected to one or more DU 165 via midhaul communication link 162 (e.g., F1, F1-c, F1-u), and DU 165 can be connected to one or more RU 170 via fronthaul communication link 168 (e.g., open fronthaul (FH) interface). In some examples, the midhaul communication link 162 or the fronthaul communication link 168 may be implemented based on the interfaces (e.g., channels) between the layers of the protocol stack, which are supported by the corresponding network entities 105 communicating via such communication links.

[0062] In a wireless communication system (e.g., wireless communication system 100), the infrastructure and spectrum resources for radio access can support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing an IAB network architecture (e.g., to core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB node 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DU 165s or one or more RU 170s may be partially controlled by one or more CU 160s associated with donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate with one or more additional network entities 105 (e.g., IAB node 104) via supported access and backhaul links (e.g., backhaul communication link 120). IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a DU 165 of a coupled IAB donor. The IAB-MT may include a separate set of antennas for relaying communication with UE 115, or may share the same antennas (e.g., those of RU 170) for access to IAB node 104 via DU 165 of IAB node 104. (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of IAB node 104) may be configured to operate according to the techniques described herein.

[0063] When the techniques described herein are applied in the context of a deconstructed RAN architecture, one or more components of the deconstructed RAN architecture can be configured to support analog front-end linearization as described herein. For example, some operations described as being performed by UE 115 or network entity 105 (e.g., base station 140) may additionally or alternatively be performed by one or more components of the deconstructed RAN architecture (e.g., IAB node 104, DU 165, CU 160, RU 170, RIC 175, SMO 180).

[0064] 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, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0065] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, network entities 105, and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 As shown.

[0066] UE 115 and network entity 105 can wirelessly communicate with each other via one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term "carrier" can refer to a set of RF spectrum resources having a physical layer structure defined for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the RF 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. Depending on the carrier aggregation configuration, UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used for both frequency division duplex (FDD) and time division duplex (TDD) component carriers. Communication between network entity 105 and other devices can refer to communication between these devices and any part of network entity 105 (e.g., entity, sub-entity). For example, the terms “send,” “receive,” or “communicate” when referring to network entity 105 can refer to any part of the RAN’s network entity 105 (e.g., base station 140, CU 160, DU 165, RU170) communicating with another device (e.g., directly or via one or more other network entities 105).

[0067] The signal waveform transmitted via a 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 refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be 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 decoding rate of the modulation scheme, or both), such that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high modulation scheme order correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial resources may increase the data rate or data integrity used for communication with UE 115.

[0068] The time interval for network entity 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period. seconds, of which It can represent the supported subcarrier spacing, and This can represent the 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).

[0069] 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 a number of 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 a number of symbol periods (e.g., depending on the length of the cyclic prefix appended to each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple micro-time slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., The duration of a symbol period is associated with a (number) sampling period. The duration of a symbol period can depend on the subcarrier spacing or the operating frequency band.

[0070] A subframe, time slot, micro-time 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 a burst of shortened TTIs (sTTIs)).

[0071] Depending on the technology, carriers can be used to multiplex physical channels for communication. One or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used, for example, to multiplex physical control channels and physical data channels for signaling via a downlink carrier. The control region of the physical control channel (e.g., a control resource set (CORESET)) can be defined by a set of symbol periods and can extend across the system bandwidth of the carrier or a subset of that bandwidth. One or more control regions (e.g., CORESET) can be configured for a set of UEs 115. For example, one or more UEs in UE 115 can monitor or search control regions to obtain 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 concatenated manner. The aggregation level of control channel candidates can refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space set may include: a common search space set configured to transmit control information to multiple UEs 115, and a UE-specific search space set used to transmit control information to a specific UE 115.

[0072] In some examples, network entity 105 (e.g., base station 140, RU 170) may be mobile, and thus provide communication coverage to mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 use the same or different radio access technologies to provide coverage for various coverage areas 110.

[0073] 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). UE 115 may be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communication may include private or group communication and may be supported by one or more services, such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general business applications. The terms “ultra-reliable,” “low-latency,” and “ultra-reliable low-latency” are used interchangeably herein.

[0074] In some examples, UE 115 may be configured to support direct communication with other UE 115s via device-to-device (D2D) communication link 135 (e.g., according to peer-to-peer (P2P), D2D, or sidelink protocols). In some examples, one or more UE 115s in a group performing D2D communication may be within the coverage area 110 of network entity 105 (e.g., base station 140, RU 170), which may support aspects of such D2D communication configured (e.g., scheduled by network entity 105). In some examples, one or more UE 115s in such a group may be outside the coverage area 110 of network entity 105, or may otherwise be unable or not configured to receive transmissions from network entity 105. In some examples, a group of UE 115s communicating via D2D communication may support a one-to-many (1:M) system, where each UE 115 transmits to each of the other UE 115s in the group. In some examples, network entity 105 may facilitate the scheduling of resources used for D2D communication. In other examples, D2D communication may be performed between UEs 115 without involving network entity 105.

[0075] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), and may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) for 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 network entity 105 (e.g., base station 140) 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 connect to one or more network operator IP services 150. IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0076] Wireless communication system 100 can operate using one or more frequency bands in the range of 300 MHz to 300 GHz. Generally, the region from 300 MHz to 3 GHz is referred to as the Ultra High Frequency (UHF) region or decimeter band because the wavelength range is approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features (which may be referred to as clusters), but these waves are sufficient to penetrate structures so that macrocells can provide service to UE 115 located indoors. Compared to communication using smaller frequencies and longer wavelengths in the lower frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz, communication using UHF waves can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0077] Wireless communication system 100 may utilize licensed and unlicensed RF spectrum bands. For example, wireless communication system 100 may use unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band) to employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology. When operating with unlicensed RF spectrum bands, devices such as network entity 105 and UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation using unlicensed frequency bands may be combined with component carriers operating with licensed frequency bands based on carrier aggregation configurations (e.g., LAA). Operation using unlicensed spectrum may include downlink transmission, uplink transmission, P2P transmission, or D2D transmission, etc.

[0078] Network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of network entity 105 or UE 115 may be located within one or more antenna arrays or antenna panels, which 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 network entity 105 may be located at different geographical locations. Network entity 105 may include an antenna array having a collection of multiple rows and columns of antenna ports that network entity 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may include one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals transmitted via the antenna ports.

[0079] 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., network entity 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 along a specific orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include applying amplitude shifts, phase shifts, or both to the signals carried via the antenna elements associated with the device. The adjustments associated with each of these antenna elements may be defined by a beamforming weight set associated with a specific orientation (e.g., relative to the antenna array of the transmitting or receiving device or relative to some other orientation).

[0080] Network entity 105 or UE 115 may use beam scanning technology as part of beamforming operations. For example, network entity 105 (e.g., base station 140, RU 170) 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 network entity 105 in different directions. For example, network entity 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. Transmission along different beam directions may be used to identify (e.g., by a transmitting device (such as network entity 105) or by a receiving device (such as UE 115)) the beam direction for later transmission or reception by network entity 105.

[0081] Some signals (such as data signals associated with a specific receiving device) may be transmitted by a transmitting device (e.g., transmitting network entity 105, transmitting UE 115) along a single beam direction (e.g., the direction associated with a receiving device (such as receiving network entity 105 or receiving UE 115). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on the signals transmitted along one or more beam directions. For example, UE 115 may receive one or more signals transmitted by network entity 105 in different directions and may report to network entity 105 an indication of signals received by UE 115 with the highest signal quality or other acceptable signal quality.

[0082] In some examples, transmissions performed by a device (e.g., by network entity 105 or UE 115) may be performed using multiple beam directions, and the device may use a combination of digital pre-decoding or beamforming to generate a combined beam for transmission (e.g., from network entity 105 to UE 115). UE 115 may report feedback indicating pre-decoding weights for one or more beam directions, and this feedback may correspond to a configured set of beams across the system bandwidth or one or more subbands. Network entity 105 may transmit reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may or may not be pre-decoded. UE 115 may provide feedback for beam selection, which may be a pre-decoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel codebook, linear combination codebook, port selection codebook). Although these techniques are described with reference to signals transmitted by network entity 105 (e.g., base station 140, RU 170) 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).

[0083] A receiving device (e.g., UE 115) may perform reception operations according to multiple reception configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a transmitting device (e.g., network entity 105). For example, the receiving device may perform reception according to multiple reception directions by: receiving via different antenna subarrays; processing the received signal according to different antenna subarrays; receiving according to different sets of reception beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets); or processing the received signal according to different sets of reception beamforming weights applied to signals received at multiple antenna elements of the antenna array. Any of these operations may be referred to as “listening” according to different reception configurations or reception directions. In some examples, the receiving device may use a single reception configuration to receive along a single beam direction (e.g., when a data signal is received). The single receiver configuration can be aligned along a beam direction determined by listening based on different receiver configuration directions (e.g., based on the beam direction determined to have the highest signal strength, highest SNR, or other acceptable signal quality based on listening to multiple beam directions).

[0084] In some examples, the receiving UE 115 may experience noise and nonlinearity originating from one or more components of the UE, which can adversely affect the SNR of the received signal. In some cases, components of the UE's analog front-end can be sources of nonlinearity, including components associated with processing the analog signal related to the upcoming transmission, such as multiple amplifiers, phase shifters, combiners, mixers, and other components. When the UE 115 processes the signal in the digital domain after the analog front-end, this can lead to a decrease in the signal's SNR, potentially resulting in degraded reception quality and an increased risk of retransmission. Therefore, techniques to reduce the nonlinear effects of the analog front-end may be desired to improve reception and the SNR associated with the received signal.

[0085] According to the examples described herein, UE 115 may implement a linearizer for linearizing a digital signal output from the analog front-end of the UE. The linearizer may be or include a set of LUTs, such as memoryless LUTs, and UE 115 may obtain (e.g., read, look up) an output voltage value (e.g., output to the next component in the digital front-end) based on an input voltage value associated with the digital signal obtained from the analog front-end. In some examples, each LUT in this set may correspond to a gain state associated with the digital signal, and this gain state may correspond to a set of configurations associated with multiple amplifiers of UE 115 (e.g., within the analog front-end). To linearize the digital signal, UE 115 may select a LUT based on the current gain state of the multiple amplifiers. In some cases, each LUT may have a different output voltage value corresponding to different SNR values. Therefore, UE 115 can linearize the digital signal at the output of the analog front-end, thereby reducing nonlinearity caused by the components of the analog front-end and increasing the SNR associated with receiving and transmitting.

[0086] In some examples, UE 115 may send a message to network entity 105 indicating its ability to perform linearization. Furthermore, UE 115 may indicate its ability to mitigate blocking frequencies based on the performance of linearization. Thus, network entity 105 may perform frequency allocation accordingly, and if UE 115 indicates its ability to mitigate blocking frequencies, network entity 105 may allocate frequencies adjacent to the blocking frequencies. In some examples, UE 115 may perform training of the linearizer, which may involve transmitting a training signal and measuring the training signal to determine one or more parameters and generate the set of LUTs. In some cases, to ensure that the training signal is linear (e.g., not subjected to nonlinearity), UE 115 may send a request message to network entity 105 to transmit the training signal at a transmission power below a threshold transmission power (e.g., the minimum transmission power that UE 115 can withstand). Network entity 105 may send a message allowing UE 115 to transmit the training signal at a transmission power of one or more symbols, and UE 115 may transmit the training signal for one or more symbols. Thus, UE 115 can perform the training process of the linearizer and generate the set of LUTs.

[0087] Figure 2 An example of a wireless communication system 200 supporting analog front-end linearization according to one or more aspects of this disclosure is shown. The wireless communication system 200 may include a UE 115-a and a network entity 105-a, which may be as described herein (reference 1). Figure 1 Examples of the corresponding components described in the reference. Network entity 105-a and UE 115-a can communicate via communication link 205, which can be as follows: Figure 1 An example of the described communication link 125.

[0088] UE 115-a may include multiple components to process received signals (e.g., as part of an Rx chain). In some examples, the multiple components may be: portions of an analog front-end (e.g., a receive or Rx analog front-end) that may be involved in processing analog signals received by one or more antennas of UE 115-a; portions of a digital front-end that may be involved in processing digital signals output from the analog front-end; and a mobile data modem that may be involved in the fast Fourier transform (FFT) process of the digital signals. UE 115-a may process received signals based on the gain state of the analog front-end, which may define a set of configurations (e.g., including one or more operating parameters) for multiple amplifiers of UE 115-a (e.g., within the Rx chain or analog front-end), such as low-noise amplifiers, variable-gain amplifiers, and other amplifiers. In some examples, the gain state may be selected by an automatic gain controller (AGC) based on reference signal measurements (e.g., synchronization signal block (SSB) or tracking reference signal (TRS) measurements). In some cases, the gain state can affect the impact of various factors (e.g., thermal noise, nonlinearity) on the received and transmitted SNR. This article refers to... Figure 3 Example layout of such components is shown.

[0089] In some examples, the SNR associated with the signal received by UE 115-a may be limited by various factors at the analog front-end of UE 115-a. These factors may include thermal noise of components within the analog front-end (e.g., evaluated using kTBFG, where k is the Boltzmann constant, T is the Kelvin temperature, B is the signal channel bandwidth, F is the noise figure, and G is the total gain), nonlinearity of components (e.g., which may be large for low-noise amplifiers) (e.g., third-order intermodulation (IM3)), factors affecting the analog-to-digital converter (e.g., integral nonlinearity, differential nonlinearity, quantization, jitter), and others. In some cases, such as those not limited by thermal noise, the SNR may be significantly limited by the nonlinearity of the analog front-end components. This can lead to a decrease in the SNR of the signal when UE 115-a processes the signal in the digital domain after the analog front-end, potentially resulting in reduced reception quality and an increased risk of retransmission. Therefore, techniques to reduce the impact of nonlinearity in the analog front-end may be desired to improve reception and the SNR associated with the received signal.

[0090] According to the examples described herein, UE 115-a may implement a linearizer 210 for linearizing digital signals output from the analog front-end of UE 115-a. Linearizer 210 may include a set of LUTs, such as memoryless LUTs. To linearize the digital signals associated with the transmission 220 of network entity 105-a, UE 115-a may obtain (e.g., read, look up) an output voltage value (e.g., output to the next component in the digital front-end) based on the input voltage value associated with the digital signals obtained from the analog front-end (e.g., from the analog-to-digital converter (ADC) of the analog front-end). In some cases, each LUT may have a different output voltage value corresponding to a different SNR value (e.g., the current SNR value determined by UE 115-a). Therefore, UE 115-a can linearize the digital signals output from the analog front-end (e.g., at the output of the analog front-end or at the input of the digital front-end), thereby reducing nonlinearity caused by components of the analog front-end and increasing the SNR associated with transmission and reception.

[0091] In some examples, each LUT in the set of LUTs of linearizer 210 may correspond to the gain state of the analog front-end of UE 115-a associated with the digital signal. For example, each LUT may have a different value, and UE 115-a may select the LUT based on the current gain state. UE 115-a may use AGC to determine the gain state of the analog front-end (e.g., multiple amplifiers of the analog front-end) based on reference signal measurements (e.g., SSB or TRS), and UE 115-a may select the LUT in the set of LUTs based on the gain state and use the selected LUT to linearize the digital signal. In some examples, to avoid SNR being limited by thermal noise, the gain state may be selected (e.g., via AGC) to transfer the effect of such factors on the SNR of the digital signal. For example, the gain state may be selected such that the nonlinearity of the analog front-end components increases the effect on SNR, but the effect of thermal noise on SNR decreases. Therefore, since UE 115-a can reduce the nonlinearity of analog front-end components by linearizing the digital signal using linearizer 210, the overall SNR associated with the digital signal can be increased even with the same amount of thermal noise. In some examples, each LUT may also have values ​​depending on the temperature of UE 115-a, carrier frequency, instantaneous bandwidth (IBW), or the beam used by UE 115-a. Additionally or alternatively, UE 115-a may be configured with different LUTs for different temperature values, carrier frequency, IBW, and beams.

[0092] In some examples, UE 115-a may load (e.g., update) values ​​associated with the LUT for linearizing digital signals based on triggers. For example, UE 115-a may select a LUT (e.g., a new LUT) and load values ​​associated with the LUT based on a detected temperature change (e.g., a temperature change exceeding a threshold), a change in the gain state of the analog front end, or both. Additionally or alternatively, UE 115-a may select a LUT and load values ​​associated with the LUT based on a detected SNR change (e.g., an SNR change exceeding a threshold), and the SNR change may be based on a change in gain state, a temperature change, or both.

[0093] In some cases, UE 115-a may experience interference from blocking frequencies adjacent to the frequency of the transmitting 220. For example, UE 115-a may experience interference from external signals transmitted to or from another UE 115-a, interference from frequency jammers, or self-interference (e.g., when performing a full-duplex process). By implementing linearizer 210, UE 115-a can mitigate interference from blocking frequencies by increasing the SNR of the received signal. For example, analog front-end components can mitigate blocking frequencies (e.g., from self-interference, adjacent blockers, or jammers) by using nonlinear interference cancellation (NLIC) or linear interference cancellation (LIC), which may introduce interference (e.g., in the form of mutual modes). Linearizer 210 can mitigate introduced interference by reducing the nonlinearity of the analog front-end components. Linearizer 210 can also improve power savings at UE 115-a because the use of linearizer 210 allows UE 115-b to reduce the third-order output advanced intercept (OIP3) while maintaining the same SNR, which reduces power consumption. In some cases, linearizer 210 may allow for a relaxation of receive AGC requirements in sidelink scenarios due to the increased SNR in sidelink transmissions.

[0094] In some examples, UE 115-a may send a message including a capability indication 215 to network entity 105-a, indicating UE 115-a's ability to linearize digital signals output from its analog front-end. Thus, network entity 105-a can perform scheduling of UE 115-a based on this capability. For example, UE 115-a may indicate in the capability indication 215 the ability to mitigate adjacent blocking frequencies based on the use of linearizer 210. Network entity 105-a may also send a message based on the capability indication 215 indicating frequency domain allocation for transmissions 220 adjacent to blocking frequencies. For example, if UE 115-a is operating near a second UE 115 that is receiving or transmitting on a first frequency band, network entity 105-a may allocate a frequency band adjacent to the first frequency band to UE 115-a's transmissions 220. Therefore, the use of linearizer 210 can improve the scheduling of network entity 105-a by increasing the potential utilization of the total frequency bandwidth.

[0095] UE 115-a can perform the training process of linearizer 210. In some examples, the training process may involve UE 115-a measuring one or more training signals, which may be known to UE 115-a (e.g., the training signals may be configured or indicated to UE 115-a or transmitted by UE 115-a). This allows UE 115-a to determine the nonlinear characteristics of the analog front-end components. For example, UE 115-a may measure the training signals and compare the expected value of the training signals (e.g., the expected power value) with the measured value, which allows UE 115-a to determine the amount of nonlinearity introduced by the analog front-end components. In some cases, the power of one or more training signals may be varied, such that UE 115-a can determine the nonlinearity of the analog front-end components when operating at different received power values. Additionally or alternatively, UE 115-a may perform measurements when operating at different gain states (e.g., based on the power of the training signals). Therefore, UE 115-a can generate a set of LUTs to correct for nonlinearity based on the measured training signals. For example, UE 115-a can determine the value of each LUT, such as the output power value corresponding to the input power value of the digital signal, and UE 115-a can determine a different LUT for each gain state.

[0096] One or more training signals may be transmitted by another device (e.g., network entity 105), or the training signals may be transmitted by UE 115-a. In some cases, transmitting one or more training signals with nonlinearity introduced by components of the transmitting device may impair the accuracy of the training process at UE 115-a. For example, UE 115-a may interpret nonlinearity introduced by components of the transmitting device as originating from components of the analog front end of UE 115-a, which may result in less accurate linearization of linearizer 210. Therefore, to improve the accuracy of linearizer 210 during training, one or more training signals may be transmitted linearly (e.g., with minimal nonlinearity). In some examples, the training process may be performed in factory settings (e.g., during the manufacture of UE 115-a), which may allow linear transmission of one or more training signals. Additionally or alternatively, UE 115-a may perform the training process in pilot mode, wherein UE 115-a may transmit one or more training signals using its transmitting components and receive one or more training signals using the receiving components of the analog front end.

[0097] To perform linear transmission of one or more training signals (e.g., with low or no nonlinearity), UE 115-a can transmit one or more training signals at a relatively low transmission power. In some cases, UE 115-a may be subject to (e.g., configured to have) transmission power requirements (e.g., by network entity 105-a, according to a standard), such as a minimum transmission power. However, transmitting one or more training signals at the minimum transmission power may be too large and may still introduce nonlinearity due to the transmission components of UE 115-a. Thus, UE 115-a may send a request message 225 to network entity 105-a, requesting UE 115-a to transmit one or more training signals at a transmission power lower than the minimum transmission power. UE 115-a may receive a response message 230 that permits or instructs UE 115-a to perform training signal transmission. In some examples, the response message 230 may allocate one or more symbols during which UE 115-a can transmit at a transmission power lower than the minimum transmission power. In some cases, one or more symbols may be periodically assigned (e.g., such that one or more symbols repeat) to allow UE 115-a to perform the training process, and one or more symbols may be sparsely repeated (e.g., at a relatively low frequency) so that UE 115-a does not violate the minimum transmit power required for other transmissions. Therefore, UE 115-a can perform training signal transmission at a lower transmit power, which allows one or more training signals to be linear, thereby improving the accuracy of the training process.

[0098] Figure 3An example functional block diagram of a receiver circuit 300 supporting analog front-end linearization according to one or more aspects of this disclosure is shown. The receiver circuit 300 may be included within a UE 115 and may include a linearizer 335, which may be as referenced herein. Figure 2 An example of linearizer 210 is described. In some cases, UE 115 may include multiple receive chains (e.g., associated with multiple antennas), and each receive chain may be associated with receive circuitry 300. In some examples, some components may be added to receive circuitry 300, and some components may be omitted from receive circuitry 300. In some examples, some components may be used with reference to... Figure 3 The configurations illustrated and described are different.

[0099] The receiving circuitry 300 may include an analog front-end 310 (e.g., a receive analog front-end or an Rx analog front-end), which may be involved in processing transmissions via reception (e.g., via one or more antennas). Figure 3 The analog signal 305 obtained is shown in the figure. The analog front end 310 may include an amplifier 325 that processes the analog signal 305. Amplifier 325 may include a low-noise amplifier and one or more variable-gain amplifiers. In some examples, amplifier 325 may also include other components such as phase shifters, combiners, mixers, or other components. Amplifier 325 may output the processed analog signal to an ADC 330, which may convert the analog signal into a digital signal.

[0100] The receiving circuitry 300 may include a digital front-end 315, which may be involved in processing the digital signal output from the ADC 330 of the analog front-end 310. For example, a linearizer 335 may receive the digital signal output from the ADC 330, and may be as described herein. Figure 2 The described method is used to linearize digital signals. Linearizer 335 may include a set of LUTs, such as memoryless LUTs. To linearize the digital signal, linearizer 335 may output a voltage value (e.g., an output voltage value) based on the voltage value obtained from ADC 330 (e.g., an input voltage value) from one of the LUTs in the set. In some cases, each LUT may have a different output voltage value corresponding to a different SNR value (e.g., the current SNR value determined by linearizer 335 or indicated to the linearizer via signal 395).

[0101] In some examples, each LUT in the group of LUTs of linearizer 335 may correspond to the gain state of analog front-end 310. For example, each LUT may have a different value, and linearizer 335 may select a LUT based on the current gain state. In some cases, linearizer 335 may receive an indication of the current gain state via signal 395, which may be output by AGC 475. In some examples, linearizer 335 may also select a LUT from the group of LUTs based on the current beam of the received signal used for transmission. Linearizer 335 may obtain an indication of the current beam via signal 395 (e.g., or a different signal).

[0102] The digital front end may include a Wideband Energy Estimation (WBEE) block 340. The WBEE block 340 receives the digital signal linearized by the linearizer 335 and calculates the WBEE associated with the digital signal. The WBEE block 340 outputs a signal 345 to the AGC 475 indicating the calculated WBEE. The digital front end may also include a Wideband (WB) and Narrowband (NB) processing block 350. The WB and NB processing block 350 receives the digital signal output by the linearizer 335 and performs processing operations. The processing operations may be based on the digital signal corresponding to WB transmission or NB transmission.

[0103] The receiving circuitry 300 may include a mobile data modem 320, which may be involved in an FFT process for digital signals. For example, the mobile data modem 320 may include an FTT block 355 that performs an FFT process on the digital signals output by the WB and NB processing blocks 350. In some examples, the FTT block 355 may output a signal 360 to the AGC 375 indicating an FFT energy estimate. The mobile data modem 320 may also include an SSB / TRS block 365. The SSB / TRS block 365 may process reference signal measurements associated with the digital signals, such as SSB measurements or TRS measurements. In some examples, the SSB / TRS block 365 may output a signal 370 to the AGC 375 indicating the reference signal measurement.

[0104] Receiver circuit 300 may include AGC 375. AGC 375 may provide feedback (e.g., closed-loop feedback) to components of receiver circuit 300. For example, AGC 375 may process signals 345, 360, and 370 output by components of receiver circuit 300. AGC 375 may output signal 380 (e.g., as part of a first inner loop) that may alter the gain (e.g., voltage value) associated with a digital signal output by WB and NB processing block 350 and received by SSB / TRS block 365. Similarly, AGC 375 may output signal 385 (e.g., as part of a second inner loop) that may alter the gain associated with a digital signal output by linearizer 335 and received by WB and NB processing block 350.

[0105] As described herein, AGC 375 can also determine the gain state based on signals 345, 360, 370, or any combination thereof. For example, AGC 375 can select the gain state based on an SSB or TRS measurement indicated in signal 370, and the gain state can indicate one or more operating parameters of a component of analog front-end 310. In some examples, AGC 375 can indicate the gain state to amplifier 325 via signal 390. Additionally or alternatively, AGC 375 can indicate the gain state to linearizer 335 via signal 395. In this way, linearizer 335 can select a LUT from the set of LUTs based on the gain state and use the selected LUT to linearize the digital signal.

[0106] In some examples, the AGC 375 can select a gain state to adjust for the trade-off between the impact of thermal noise (e.g., evaluated using kTBFG) and the nonlinearity of the analog front-end 310 components (e.g., IM3) on the SNR associated with the signal. For example, the AGC 375 can select a gain state such that the nonlinearity of the analog front-end components increases the impact of the SNR on the SNR, but the impact of thermal noise on the SNR decreases. Therefore, since the linearizer 335 can then reduce the nonlinearity of the digital signal by linearizing the digital signal, the overall SNR associated with the digital signal can increase and the noise figure (NF) can decrease, even if the same amount of thermal noise is present at the receiver circuitry 300.

[0107] Figure 4An example of Figure 400 supporting analog front-end linearization according to one or more aspects of this disclosure is shown. Figure 400 may illustrate an output voltage value (e.g., voltage input) corresponding to an input voltage value (e.g., voltage output) of a digital signal (e.g., output from an analog front-end or ADC). Figure 400 may be implemented in a linearizer (e.g., linearizer 210, linearizer 335) as described herein and may represent a value associated with a LUT (e.g., a single LUT in a set of LUTs).

[0108] Figure 400 may illustrate one or more curves that illustrate the relationship between input voltage values ​​and output voltage values. For example, Figure 400 may include curves 405, 410, 415, 420, and 425. Line 430 is a reference line showing where the input voltage value equals the output voltage value and may represent the value when the linearizer is not in use or is disabled.

[0109] In some examples, each curve of the LUT can be associated with a different SNR value. For example, during the training process, the UE 115 can determine that the nonlinearity at the voltage input value may change depending on the current SNR value, and the UE 115 can generate curve 420 (e.g., corresponding to an SNR value of 10 dB), curve 415 (e.g., corresponding to an SNR value of 20 dB), and curve 410 (e.g., corresponding to an SNR value of 30 dB). The UE 115 can also generate curves based on other factors, such as temperature, carrier frequency, IBW, and which beam is being used. Thus, the output voltage value obtained from the LUT can depend on the SNR, temperature, carrier frequency, IBW, and which beam is being used, or any combination thereof, and the current gain state, as referenced herein. Figure 3 and Figure 4 Described.

[0110] Figure 5 An example of a procedure flow 500 supporting simulated front-end linearization according to one or more aspects of this disclosure is shown. Procedure flow 500 illustrates communication between network entity 105-b and UE 115-b, which may be an example of corresponding components as described herein. Procedure flow 500 may illustrate a training process for linearizers (e.g., linearizer 210, linearizer 335) as described herein, and uses the linearizers to linearize signals associated with transmissions from network entity 105-b to UE 115-b. In some cases, the steps shown in procedure flow 500 may be performed in a different order. Additionally, some steps may be added to procedure flow 500 and some steps may be omitted from procedure flow 500.

[0111] At 505, UE 115-b may send a request message to network entity 105-b. This request message may request network entity 105-b to cause UE 115-b to transmit one or more training signals at a transmission power below a threshold (e.g., configured to UE 115-b).

[0112] At 510, network entity 105-a may send a response message allowing or instructing UE 115-b to transmit one or more training signals at a transmission power. In some examples, the response message may allocate one or more symbols during which UE 115-b may transmit at a transmission power lower than the minimum transmission power. In some cases, one or more symbols may be allocated periodically (e.g., such that one or more symbols repeat) to allow UE 115-a to perform periodic training signal transmissions, and such one or more symbols may repeat sparsely (e.g., at a relatively low frequency) so that UE 115-b does not violate a threshold transmission power (e.g., minimum transmission power) for other transmissions.

[0113] At 515, the UE 115-b can perform linearization training, which may involve generating a set of LUTs. Each LUT maps an input voltage value associated with a digital signal output from the analog front end of the UE 115-b to an output voltage value (e.g., output by a linearizer for the next component in the digital front end of the UE 115-b). In some examples, each LUT may correspond to a gain state, where the gain state is associated with one or more configurations of multiple amplifiers of the UE 115-b.

[0114] At 520, UE 115-b may send a message including a capability indication to network entity 105-b, indicating UE 115-b's ability to linearize digital signals output from its analog front-end. In some examples, the capability indication may indicate UE 115-b's ability to mitigate adjacent blocking frequencies based on the use of a linearizer.

[0115] At 525, network entity 105-b may send a message instructing UE 115-a on frequency allocation based on a capability indication. For example, network entity 105-b may send a message instructing frequency domain allocation for transmission adjacent to the blocking frequency indicated in the capability indication.

[0116] At 530, network entity 105-b can perform transmission. UE 115-b can receive transmissions and use UE 115-b's analog front end to process analog signals associated with transmissions.

[0117] At 535, UE 115-b can linearize the digital signal output from its analog front end (e.g., by an ADC). To linearize the digital signal, UE 115-b can obtain an output voltage value from a LUT that corresponds to an input voltage value associated with the digital signal (e.g., input to a linearizer). In some examples, UE 115-b can select a LUT from the set of LUTs based on the current gain state used by UE 115-b.

[0118] Figure 6 A block diagram 600 illustrates a device 605 supporting analog front-end linearization according to one or more aspects of this disclosure. Device 605 may be an example of aspects of UE 115 as described herein. Device 605 may include a receiver 610, a transmitter 615, and a communication manager 620. Device 605, or one or more components of device 605 (e.g., receiver 610, transmitter 615, and communication manager 620), may include at least one processor that may be coupled to at least one memory to individually or jointly support or implement the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0119] Receiver 610 may provide components 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 analog front-end linearization). The information may be transmitted to other components of device 605. Receiver 610 may utilize a single antenna or a collection of multiple antennas.

[0120] Transmitter 615 may provide components for transmitting signals generated by other components of device 605. For example, transmitter 615 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to analog front-end linearization), user data, control information, or any combination thereof. In some examples, transmitter 615 may be co-located with receiver 610 in a transceiver module. Transmitter 615 may utilize a single antenna or a collection of multiple antennas.

[0121] The communication manager 620, receiver 610, transmitter 615, or various combinations thereof or various components thereof may be examples of components for performing various aspects of analog front-end linearization as described herein. For example, the communication manager 620, receiver 610, transmitter 615, or various combinations thereof or components thereof may be able to perform one or more of the functions described herein.

[0122] In some examples, the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include at least one of the following: a processor, digital signal processor (DSP), central processing unit (CPU), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, microcontroller, discrete gate or transistor logic device, discrete hardware component, or any combination thereof, configured as or otherwise individually or collectively to support components for performing the functions described herein. In some examples, at least one processor and at least one memory coupled to said at least one processor may be configured to perform one or more of the functions described herein (e.g., instructions stored in at least one memory are executed individually or collectively by one or more processors).

[0123] Additionally or alternatively, the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communication management software or firmware). If implemented in code executed by at least one processor, the functionality of the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be performed by a general-purpose processor, DSP, CPU, ASIC, FPGA, microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise individually or jointly to support components for performing the functions described in this disclosure).

[0124] In some examples, the communication manager 620 may be configured to use or otherwise cooperate with the receiver 610, the transmitter 615, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, the communication manager 620 may receive information from the receiver 610, transmit information to the transmitter 615, or be integrated with the receiver 610, the transmitter 615, or both to acquire information, output information, or perform various other operations as described herein.

[0125] According to the examples disclosed herein, the communication manager 620 can support wireless communication at the UE. For example, the communication manager 620 can be, configured, or operated to support components for transmitting a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission. The communication manager 620 can be, configured, or operated to support components for receiving a first transmission associated with a gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE. The communication manager 620 can be, configured, or operated to support components for linearizing the digital signal associated with the first transmission based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the analog front-end.

[0126] Additionally or alternatively, according to the examples disclosed herein, the communication manager 620 may support wireless communication at the UE. For example, the communication manager 620 is capable of, configured to, or operable to support components for transmitting a training signal at a transmission power below a threshold transmission power to send a request message, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by the UE's receiving analog front-end. The communication manager 620 is capable of, configured to, or operable to support components for transmitting the training signal at a transmission power based on a transmission request message. The communication manager 620 is capable of, configured to, or operable to support components for measuring the training signal to estimate one or more parameters.

[0127] According to the examples described herein, by including or configuring a communication manager 620, a device 605 (e.g., controlling a receiver 610, a transmitter 615, a communication manager 620, or a combination thereof, or at least one processor otherwise coupled to the receiver, transmitter, communication manager, or a combination thereof) can support techniques for simulating front-end linearization, which may result in reduced power consumption, higher reception quality, and more efficient scheduling processes.

[0128] Figure 7 A block diagram 700 illustrates a device 705 supporting analog front-end linearization according to one or more aspects of this disclosure. Device 705 may be an example of aspects of device 605 or UE 115 as described herein. Device 705 may include a receiver 710, a transmitter 715, and a communication manager 720. Device 705, or one or more components of device 705 (e.g., receiver 710, transmitter 715, and communication manager 720), may include at least one processor that may be coupled to at least one memory to support the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0129] Receiver 710 may provide components 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 analog front-end linearization). The information may be transmitted to other components of device 705. Receiver 710 may utilize a single antenna or a collection of multiple antennas.

[0130] Transmitter 715 may provide components for transmitting signals generated by other components of device 705. For example, transmitter 715 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to analog front-end linearization), user data, control information, or any combination thereof. In some examples, transmitter 715 may be co-located with receiver 710 in a transceiver module. Transmitter 715 may utilize a single antenna or a collection of multiple antennas.

[0131] Device 705 or its various components may be examples of parts for performing various aspects of analog front-end linearization as described herein. For example, communication manager 720 may include capability component 725, gain state component 730, linearizer component 735, request component 740, training signal component 745, parameter component 750, or any combination thereof. Communication manager 720 may be examples of aspects of communication manager 620 as described herein. In some examples, communication manager 720 or its various components may be configured to use or otherwise cooperate with receiver 710, transmitter 715, or both to perform various operations (e.g., receive, acquire, monitor, output, transmit). For example, communication manager 720 may receive information from receiver 710, transmit information to transmitter 715, or be integrated in combination with receiver 710, transmitter 715, or both to acquire information, output information, or perform various other operations as described herein.

[0132] According to the examples disclosed herein, the communication manager 720 can support wireless communication at the UE. Capability component 725 is capable of, configured to, or operable to support components for transmitting a first message indicating the ability to linearize a digital signal output by the UE's receiving analog front-end, the digital signal being associated with a first transmission. Gain state component 730 is capable of, configured to, or operable to support components for receiving a first transmission associated with a gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE. Linearizer component 735 is capable of, configured to, or operable to support components for linearizing the digital signal associated with the first transmission based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the analog front-end.

[0133] Additionally or alternatively, according to the examples disclosed herein, the communication manager 720 may support wireless communication at the UE. The request component 740 is capable of, configured to, or operable to support components for transmitting a training signal at a transmission power below a threshold transmission power to send a request message, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by the UE's receiving analog front-end. The training signal component 745 is capable of, configured to, or operable to support components for transmitting a training signal at a transmission power based on a transmission request message. The parameter component 750 is capable of, configured to, or operable to support components for measuring the training signal to estimate one or more parameters.

[0134] Figure 8 A block diagram 800 illustrates a communication manager 820 supporting analog front-end linearization according to one or more aspects of this disclosure. The communication manager 820 may be an example of a communication manager 620, a communication manager 720, or aspects thereof as described herein. The communication manager 820 or its various components may be examples of parts for performing various aspects of analog front-end linearization as described herein. For example, the communication manager 820 may include a capability component 825, a gain state component 830, a linearizer component 835, a request component 840, a training signal component 845, a parameter component 850, a frequency manager 855, or any combination thereof. Each of these components, or its components or sub-components (e.g., one or more processors, one or more memories), may communicate directly or indirectly with each other (e.g., via one or more buses).

[0135] According to the examples disclosed herein, the communication manager 820 can support wireless communication at the UE. Capability component 825 is capable of, configured to, or operable to support components for transmitting a first message indicating the ability to linearize a digital signal output by the UE's receiving analog front-end, the digital signal being associated with a first transmission. Gain state component 830 is capable of, configured to, or operable to support components for receiving a first transmission associated with a gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE. Linearizer component 835 is capable of, configured to, or operable to support components for linearizing the digital signal associated with the first transmission based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the analog front-end.

[0136] In some examples, in order to support linearized digital signals, the linearizer component 835 is capable of, configured to, or operable to support components for obtaining an output voltage value corresponding to an input voltage value based on a first LUT in a set of LUTs, which is associated with a gain state.

[0137] In some examples, in order to support the acquisition of input voltage values, linearizer component 835 is capable of, configured to, or operable to support components for obtaining input voltage values ​​from a first LUT based on the SNR associated with the noise figure corresponding to the digital signal.

[0138] In some examples, the frequency manager 855 is capable of, configured to, or operable to support components for receiving a second message indicating a frequency domain allocation for a first transmission based on the transmission of a first message, wherein the second message instructs the UE to linearize a digital signal.

[0139] In some examples, capability component 825 is capable of, configured to, or operable to support components for transmitting a third message indicating the ability to mitigate blocking frequency bands based on a linearized digital signal.

[0140] In some examples, the frequency manager 855 is capable of, configured to, or operable to support components for receiving a fourth message indicating a frequency domain allocation based on a third message, wherein the frequency domain allocation indicates at least one frequency band adjacent to the blocking frequency band.

[0141] In some examples, the linearized digital signal is based on the detection of a temperature change exceeding a threshold. In some examples, the linearized digital signal is based on the detection of a change in gain state, and the receiving analog front end includes this set of multiple amplifiers at the UE. In some examples, the linearized digital signal is based on the detection of a change in SNR associated with the digital signal, and the change in SNR is based on a change in gain state, a change in temperature, or both.

[0142] Additionally or alternatively, according to the examples disclosed herein, the communication manager 820 may support wireless communication at the UE. The request component 840 is capable of, configured to, or operable to support components for transmitting a training signal at a transmission power below a threshold transmission power for sending a request message, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by the UE's receiving analog front-end. The training signal component 845 is capable of, configured to, or operable to support components for transmitting a training signal at a transmission power based on a transmission request message. The parameter component 850 is capable of, configured to, or operable to support components for measuring the training signal to estimate one or more parameters.

[0143] In some examples, the request component 840 is capable of, configured to, or operable to support a component for receiving a message in response to a request message indicating that the UE is permitted to transmit a training signal at a transmit power of one or more symbols, wherein the training signal is transmitted during one or more symbols.

[0144] In some examples, to support the estimation of one or more parameters, the training signal component 845 can be, configured, or operated to support components for generating a set of LUTs, each LUT corresponding to a gain state and including a set of multiple output voltage values ​​corresponding to a set of multiple input voltage values ​​associated with an analog front end.

[0145] In some examples, the linearizer component 835 is capable of, configured to, or operable to support components for receiving a first transmission associated with a first gain state, which includes a set of configurations associated with a plurality of amplifiers at the UE. In some examples, the linearizer component 835 is capable of, configured to, or operable to support components for linearizing a digital signal associated with the first transmission based on the first gain state and a first LUT corresponding to the first gain state, wherein linearizing the digital signal includes obtaining an output voltage value from the first LUT corresponding to an input voltage value associated with an analog front-end.

[0146] In some examples, parameter component 850 is capable of, configured to, or operable to support components for estimating amplitude modulation (AM) to AM distortion, AM to phase modulation (PM) distortion, or both. In some examples, parameter component 850 is capable of, configured to, or operable to support components for estimating a target gain value based on AM to AM distortion, AM to PM distortion, or both, wherein the generation of this set of LUTs is based on the estimated target gain value.

[0147] In some examples, the training signal is linearly based on the transmission power of the training signal.

[0148] Figure 9A diagram illustrating a system 900 including a device 905 supporting analog front-end linearization according to one or more aspects of this disclosure. Device 905 may be an example of device 605, device 705, or UE 115 as described herein, or may include components thereof. Device 905 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof (e.g., wirelessly). Device 905 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 920, an input / output (I / O) controller 910, a transceiver 915, an antenna 925, at least one memory 930, code 935, and at least one processor 940. These components may communicate electronically via one or more buses (e.g., bus 945) or be coupled in other ways (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground).

[0149] I / O controller 910 can manage the input and output signals of device 905. I / O controller 910 can also manage peripheral devices not integrated into device 905. In some cases, I / O controller 910 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 910 can utilize an operating system, such as iOS. ® ANDROID ® MS-DOS ® MS-WINDOWS ® OS / 2 ® UNIX ® LINUX ® Or another known operating system. Additionally or alternatively, the I / O controller 910 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 910 may be implemented as part of one or more processors, such as at least one processor 940. In some cases, a user may interact with the device 905 via the I / O controller 910 or via hardware components controlled by the I / O controller 910.

[0150] In some cases, device 905 may include a single antenna 925. However, in other cases, device 905 may have more than one antenna 925, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. Transceiver 915 may communicate bidirectionally via one or more antennas 925 as described herein, or via a wired or wireless link. For example, transceiver 915 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 915 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 925 for transmission; and demodulating packets received from one or more antennas 925. Transceiver 915, or transceiver 915 and one or more antennas 925, may be an example of transmitter 615, transmitter 715, receiver 610, receiver 710, or any combination thereof or components thereof as described herein.

[0151] At least one memory 930 may include random access memory (RAM) and read-only memory (ROM). At least one memory 930 may store computer-readable, computer-executable code 935, including instructions that, when executed by at least one processor 940, cause device 905 to perform the various functions described herein. Code 935 may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 935 may not be directly executable by at least one processor 940, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, among other things, at least one memory 930 may also include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0152] At least one processor 940 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, at least one processor 940 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into at least one processor 940. At least one processor 940 may be configured to execute computer-readable instructions stored in memory (e.g., at least one memory 930) to cause device 905 to perform various functions (e.g., functions or tasks supporting analog front-end linearization). For example, device 905 or components of device 905 may include at least one processor 940 and at least one memory 930 coupled to or coupled to at least one processor 940, wherein at least one processor 940 and at least one memory 930 are configured to perform the various functions described herein. In some examples, at least one processor 940 may include multiple processors, and at least one memory 930 may include multiple memories. One or more of a plurality of processors may be coupled to one or more of a plurality of memories, which may be configured individually or collectively to perform the various functions described herein.

[0153] According to the examples disclosed herein, the communication manager 920 can support wireless communication at the UE. For example, the communication manager 920 can be, configured, or operated to support components for transmitting a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission. The communication manager 920 can be, configured, or operated to support components for receiving a first transmission associated with a gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE. The communication manager 920 can be, configured, or operated to support components for linearizing the digital signal associated with the first transmission based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the analog front-end.

[0154] Additionally or alternatively, according to the examples disclosed herein, the communication manager 920 may support wireless communication at the UE. For example, the communication manager 920 may be capable of, configured to, or operable to support components for transmitting a training signal at a transmission power below a threshold transmission power to send a request message, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by the UE's receiving analog front-end. The communication manager 920 may be capable of, configured to, or operable to support components for transmitting the training signal at a transmission power based on a transmission request message. The communication manager 920 may be capable of, configured to, or operable to support components for measuring the training signal to estimate one or more parameters.

[0155] By including or configuring the communication manager 920 according to the examples described herein, the device 905 can support techniques for simulating front-end linearization, which can lead to improved communication reliability, reduced power consumption, longer battery life, and more efficient utilization of communication resources.

[0156] In some examples, the communication manager 920 may be configured to use or otherwise cooperate with transceiver 915, one or more antennas 925, or any combination thereof to perform various operations (e.g., receiving, monitoring, transmitting). Although the communication manager 920 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 920 may be supported by or performed by at least one processor 940, at least one memory 930, code 935, or any combination thereof. For example, code 935 may include instructions that can be executed by at least one processor 940 to cause device 905 to perform various aspects of analog front-end linearization as described herein, or at least one processor 940 and at least one memory 930 may be otherwise configured to perform or support such operations individually or jointly.

[0157] Figure 10 A block diagram 1000 illustrates a device 1005 supporting analog front-end linearization according to one or more aspects of this disclosure. Device 1005 may be an example of aspects of network entity 105 as described herein. Device 1005 may include a receiver 1010, a transmitter 1015, and a communication manager 1020. Device 1005, or one or more components of device 1005 (e.g., receiver 1010, transmitter 1015, and communication manager 1020), may include at least one processor that may be coupled to at least one memory to individually or jointly support or implement the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0158] Receiver 1010 may provide components for acquiring (e.g., receiving, determining, identifying) information (such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units)) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack). The information may be passed to other components of device 1005. In some examples, receiver 1010 may support acquiring information by receiving signals via one or more antennas. Additionally or alternatively, receiver 1010 may support acquiring information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.

[0159] Transmitter 1015 may provide components for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of device 1005. For example, transmitter 1015 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, transmitter 1015 may support outputting information by transmitting signals via one or more antennas. Additionally or alternatively, transmitter 1015 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, transmitter 1015 and receiver 1010 may be co-located in a transceiver, which may include or be coupled to a modem.

[0160] The communication manager 1020, receiver 1010, transmitter 1015, or various combinations thereof, or various components thereof, may be examples of components used to perform various aspects of analog front-end linearization as described herein. For example, the communication manager 1020, receiver 1010, transmitter 1015, or various combinations thereof, or components thereof, may be able to perform one or more of the functions described herein.

[0161] In some examples, the communication manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include at least one of a processor, DSP, CPU, ASIC, FPGA, or other programmable logic device, microcontroller, discrete gate or transistor logic element, discrete hardware component, or any combination thereof, configured as or otherwise individually or collectively to support components for performing the functions described herein. In some examples, at least one processor and at least one memory coupled to said at least one processor may be configured to perform one or more of the functions described herein (e.g., instructions stored in at least one memory are executed individually or collectively by one or more processors).

[0162] Additionally or alternatively, the communication manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communication management software or firmware). If implemented in code executed by at least one processor, the functionality of the communication manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be performed by a general-purpose processor, DSP, CPU, ASIC, FPGA, microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise individually or jointly to support components for performing the functions described in this disclosure).

[0163] In some examples, the communication manager 1020 may be configured to use or otherwise cooperate with the receiver 1010, the transmitter 1015, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, the communication manager 1020 may receive information from the receiver 1010, transmit information to the transmitter 1015, or integrate with the receiver 1010, the transmitter 1015, or both to acquire information, output information, or perform various other operations as described herein.

[0164] According to the examples disclosed herein, the communication manager 1020 may support wireless communication at a network entity. For example, the communication manager 1020 may be capable of, configured to, or operable to support components for receiving a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end. The communication manager 1020 may be capable of, configured to, or operable to support components for transmitting a second message indicating a frequency domain allocation for the first transmission based on the reception of the first message, wherein the second message instructs the UE to linearize the digital signal.

[0165] According to the examples described herein, by including or configuring a communication manager 1020, a device 1005 (e.g., at least one processor that controls a receiver 1010, a transmitter 1015, a communication manager 1020, or a combination thereof, or otherwise coupled to a receiver, a transmitter, a communication manager, or a combination thereof) can support techniques for simulating front-end linearization, which may result in reduced power consumption, enhanced reception quality, and a more efficient scheduling process.

[0166] Figure 11 A block diagram 1100 illustrates a device 1105 supporting analog front-end linearization according to one or more aspects of this disclosure. Device 1105 may be an example of aspects of device 1005 or network entity 105 as described herein. Device 1105 may include receiver 1110, transmitter 1115, and communication manager 1120. Device 1105, or one or more components of device 1105 (e.g., receiver 1110, transmitter 1115, and communication manager 1120), may include at least one processor that may be coupled to at least one memory to support the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0167] Receiver 1110 may provide components for acquiring (e.g., receiving, determining, identifying) information (such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units)) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack). The information may be passed to other components of device 1105. In some examples, receiver 1110 may support acquiring information by receiving signals via one or more antennas. Additionally or alternatively, receiver 1110 may support acquiring information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.

[0168] Transmitter 1115 may provide components for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of device 1105. For example, transmitter 1115 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, transmitter 1115 may support outputting information by transmitting signals via one or more antennas. Additionally or alternatively, transmitter 1115 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, transmitter 1115 and receiver 1110 may be co-located in a transceiver, which may include or be coupled to a modem.

[0169] Device 1105 or its various components may be examples of various parts used to perform analog front-end linearization as described herein. For example, communication manager 1120 may include capability manager 1125, frequency component 1130, or any combination thereof. Communication manager 1120 may be examples of various aspects of communication manager 1020 as described herein. In some examples, communication manager 1120 or its various components may be configured to use or otherwise cooperate with receiver 1110, transmitter 1115, or both to perform various operations (e.g., receive, acquire, monitor, output, transmit). For example, communication manager 1120 may receive information from receiver 1110, transmit information to transmitter 1115, or be integrated in combination with receiver 1110, transmitter 1115, or both to acquire information, output information, or perform various other operations as described herein.

[0170] According to the examples disclosed herein, communication manager 1120 may support wireless communication at a network entity. Capability manager 1125 is capable of, configured to, or operable to support components for receiving a first message indicating the capability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end. Frequency component 1130 is capable of, configured to, or operable to support components for transmitting a second message indicating a frequency domain allocation for the first transmission based on receiving the first message, wherein the second message instructs the UE to linearize the digital signal.

[0171] Figure 12A block diagram 1200 illustrates a communication manager 1220 supporting analog front-end linearization according to one or more aspects of this disclosure. Communication manager 1220 may be an example of aspects of communication manager 1020, communication manager 1120, or both as described herein. Communication manager 1220 or its various components may be examples of components for performing various aspects of analog front-end linearization as described herein. For example, communication manager 1220 may include capability manager 1225, frequency component 1230, request manager 1235, or any combination thereof. These components, or each of their components or sub-components (e.g., one or more processors, one or more memories), may communicate directly or indirectly with each other (e.g., via one or more buses), and this communication may include communication within protocol layers of a protocol stack, communication associated with logical channels of the protocol stack (e.g., between protocol layers of the protocol stack, within devices, components, or virtualization components associated with network entity 105, between devices, components, or virtualization components associated with network entity 105), or any combination thereof.

[0172] According to the examples disclosed herein, communication manager 1220 may support wireless communication at a network entity. Capability manager 1225 is capable of, configured to, or operable to support components for receiving a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end. Frequency component 1230 is capable of, configured to, or operable to support components for transmitting a second message indicating a frequency domain allocation for the first transmission based on receiving the first message, wherein the second message instructs the UE to linearize the digital signal.

[0173] In some examples, a third message is received that indicates the ability to mitigate blocking frequency bands based on linearized digital signals.

[0174] In some examples, frequency domain allocation is based on receiving a third message to indicate at least one frequency band adjacent to the blocking band.

[0175] In some examples, the request manager 1235 is capable of, configured to, or operable to support components for receiving a request message to transmit a training signal at a transmission power below a threshold transmission power, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by the UE's analog front-end. In some examples, the request manager 1235 is capable of, configured to, or operable to support components for responding to a request message to transmit a message indicating that the UE is permitted to transmit the training signal at a transmission power of one or more symbols.

[0176] In some examples, one or more parameters include amplitude modulation (AM) to AM distortion, AM to phase modulation (PM) distortion, a target gain value associated with the UE's analog-to-digital converter, or any combination thereof.

[0177] In some examples, the second message instructs the UE to linearize the digital signal based on the detection that a temperature change at the UE exceeds a threshold.

[0178] In some examples, the second message instructs the UE to linearize the digital signal based on the detection of a change in the gain state, which is associated with a set of multiple amplifiers at the UE.

[0179] In some examples, the second message instructs the UE to linearize the digital signal based on the detection of a change in the SNR associated with the digital signal, wherein the change in SNR is based on a change in gain state, a change in temperature, or both.

[0180] Figure 13 A diagram illustrates a system 1300 including a device 1305 supporting analog front-end linearization, according to one or more aspects of this disclosure. Device 1305 may be an example of device 1005, device 1105, or network entity 105 as described herein, or may include components thereof. Device 1305 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, and this communication may include communication via one or more wired interfaces, one or more wireless interfaces, or any combination thereof. Device 1305 may include components supporting output and enabling communication, such as a communication manager 1320, a transceiver 1310, an antenna 1315, at least one memory 1325, code 1330, and at least one processor 1335. These components may communicate electronically via one or more buses (e.g., bus 1340) or be otherwise coupled (e.g., operative ground, communicative ground, functional ground, electronic ground, electrical ground).

[0181] Transceiver 1310 may support bidirectional communication via a wired link, a wireless link, or both, as described herein. In some examples, transceiver 1310 may include a wired transceiver and be capable of bidirectional communication with another wired transceiver. Additionally or alternatively, in some examples, transceiver 1310 may include a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. In some examples, device 1305 may include one or more antennas 1315 that may be capable of (e.g., concurrently) transmitting or receiving wireless transmissions. Transceiver 1310 may also include a modem for modulating signals, providing modulated signals for transmission (e.g., via one or more antennas 1315, via a wired transmitter), receiving modulated signals (e.g., from one or more antennas 1315, from a wired receiver), and demodulating signals. In some embodiments, transceiver 1310 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1315 configured to support various receive or acquire operations, or one or more interfaces coupled to one or more antennas 1315 configured to support various transmit or output operations, or combinations thereof. In some embodiments, transceiver 1310 may include one or more processors or one or more memory components or configured to be coupled to such processors or memory components, which are operable to perform or support operations based on received or acquired information or signals, or to generate information or other signals for transmission or other output, or any combination thereof. In some embodiments, transceiver 1310, or transceiver 1310 and one or more antennas 1315, or transceiver 1310 and one or more antennas 1315 and one or more processors or one or more memory components (e.g., at least one processor 1335, at least one memory 1325, or both) may be included in a chip or chip assembly mounted in device 1305. In some examples, transceiver 1310 is operable to support communication via one or more communication links (e.g., communication link 125, backhaul communication link 120, midhaul communication link 162, and fronthaul communication link 168).

[0182] At least one memory 1325 may include RAM, ROM, or any combination thereof. At least one memory 1325 may store computer-readable, computer-executable code 1330 including instructions that, when executed by one or more of at least one processor 1335, cause device 1305 to perform the various functions described herein. Code 1330 may be stored in a non-transitory computer-readable medium, such as system memory or another type of memory. In some cases, code 1330 may not be directly executable by one of the at least one processor 1335, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, at least one memory 1325 may also include a BIOS, among other things, that controls basic hardware or software operation, such as interaction with peripheral components or devices. In some examples, at least one processor 1335 may include multiple processors, and at least one memory 1325 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, which may be configured individually or collectively to perform the various functions described herein (e.g., as part of a processing system).

[0183] At least one processor 1335 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, ASICs, CPUs, FPGAs, microcontrollers, programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof). In some cases, at least one processor 1335 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into one or more of the at least one processor 1335. At least one processor 1335 may be configured to execute computer-readable instructions stored in memory (e.g., one or more of at least one memory 1325) to cause device 1305 to perform various functions (e.g., functions or tasks supporting analog front-end linearization). For example, device 1305 or components of device 1305 may include at least one processor 1335 and at least one memory 1325 coupled to one or more of the at least one processor 1335, wherein at least one processor 1335 and at least one memory 1325 are configured to perform the various functions described herein. At least one processor 1335 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, virtual machine, or container instance) that can (e.g., by executing code 1330) host functions for performing the functions of device 1305. At least one processor 1335 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in device 1305 (such as within one or more memories of at least one memory 1325). In some implementations, at least one processor 1335 may be a component of a processing system. A processing system can generally refer to a system or series of machines or components that receive input and process that input to produce a set of outputs (which may be passed to other systems or components, such as device 1305). For example, the processing system of device 1305 may refer to a system that includes various other components or sub-components of device 1305 (such as at least one processor 1335, transceiver 1310, communication manager 1320, or other components or combinations of components of device 1305). The processing system of device 1305 can interface with other components of device 1305 and can process information (such as inputs or signals) received from other components or output information to other components. For example, the chip or modem of device 1305 may include a processing system and one or more interfaces for outputting information or for acquiring information, or both. The one or more interfaces may be implemented as or otherwise include a first interface configured to output information and a second interface configured to acquire information, or the same interface configured to both output and acquire information, and other specific implementations.In some embodiments, one or more interfaces may refer to an interface between the processing system of the chip or modem and the transmitter, enabling device 1305 to send information output from the chip or modem. Additionally or alternatively, in some embodiments, one or more interfaces may refer to an interface between the processing system of the chip or modem and the receiver, enabling device 1305 to receive information or signal input and for that information to be transmitted to the processing system. Those skilled in the art will readily recognize that a first interface may also receive information or signal input, and a second interface may also output information or signal output.

[0184] In some examples, bus 1340 may support communication at protocol layers of the protocol stack (e.g., within the protocol layer). In some examples, bus 1340 may support communication associated with logical channels of the protocol stack (e.g., between protocol layers of the protocol stack), which may include communication performed within components of device 1305, or communication performed between different components of device 1305 that are co-addressable or may be located in different locations (e.g., where device 1305 may refer to a system in which one or more of communication manager 1320, transceiver 1310, at least one memory 1325, code 1330 and at least one processor 1335 may be located in one component of different components or partitioned between different components).

[0185] In some examples, the communication manager 1320 may manage (e.g., via one or more wired or wireless backhaul links) various aspects of communication with the core network 130. For example, the communication manager 1320 may manage the delivery of data communications by client devices, such as one or more UEs 115. In some examples, the communication manager 1320 may manage communication with other network entities 105 and may include a controller or scheduler for cooperating with other network entities 105 to control communication with UE 115. In some examples, the communication manager 1320 may support an X2 interface within LTE / LTE-A wireless communication network technology to provide communication between network entities 105.

[0186] According to the examples disclosed herein, the communication manager 1320 may support wireless communication at a network entity. For example, the communication manager 1320 may be capable of, configured to, or operable to support components for receiving a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end. The communication manager 1320 may be capable of, configured to, or operable to support components for transmitting a second message indicating a frequency domain allocation for the first transmission based on the reception of the first message, wherein the second message instructs the UE to linearize the digital signal.

[0187] By including or configuring the communication manager 1320 according to the examples described herein, the device 1305 can support techniques for simulating front-end linearization, which can lead to improved communication reliability, reduced power consumption, and longer battery life.

[0188] In some examples, the communication manager 1320 may be configured to cooperate with or otherwise collaborate with the transceiver 1310, one or more antennas 1315 (e.g., where applicable) or any combination thereof to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). Although the communication manager 1320 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1320 may be supported or performed by the transceiver 1310, one or more processors in at least one processor 1335, one or more memories in at least one memory 1325, code 1330, or any combination thereof (e.g., by a processing system including at least a portion of at least one processor 1335, at least one memory 1325, code 1330, or any combination thereof). For example, code 1330 may include instructions that can be executed by one or more of the at least one processor 1335 to cause the device 1305 to perform various aspects of the analog front-end linearization as described herein, or at least one processor 1335 and at least one memory 1325 may be otherwise configured to perform or support such operations individually or jointly.

[0189] Figure 14 A flowchart illustrating a method 1400 for supporting simulated front-end linearization according to aspects of this disclosure is shown. Operation of method 1400 can be implemented by a UE or its components as described herein. For example, operation of method 1400 can be implemented by, as referenced... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0190] At 1405, the method may include: sending a first message indicating the ability to linearize a digital signal output by the UE's receiving analog front-end, the digital signal being associated with the first transmission. Operation of block 1405 may be performed according to examples as disclosed herein, such as those mentioned in reference... Figure 2 The described capability indicates the transmission of 215. In some examples, aspects of the operation of 1405 may be described by reference to [reference needed]. Figure 8 The described capability component 825 is used to perform this.

[0191] At 1410, the method may include: receiving a first transmission associated with receiving a gain state of an analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE. Operation of block 1410 may be performed according to examples as disclosed herein. In some examples, aspects of operation of 1410 may be provided by reference to [reference needed]. Figure 8 The described gain state component 830 is used to perform this.

[0192] At 1415, the method may include: linearizing a digital signal associated with the first transmission based on a gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with an analog front end. The operation of block 1415 may be performed according to examples as disclosed herein, such as those referenced. Figure 2 Linearizer 210 or Figure 3 The linearizer 335 is described in the example. In some examples, aspects of the operation of 1415 can be derived from, as in the reference... Figure 8 The described linearizer component 835 is used to perform this.

[0193] Figure 15 A flowchart illustrating a method 1500 for supporting simulated front-end linearization according to aspects of this disclosure is shown. The operation of method 1500 can be implemented by a UE or its components as described herein. For example, the operation of method 1500 can be implemented by, as referenced... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0194] At 1505, the method may include: sending a first message indicating the ability to linearize a digital signal output by the UE's receiving analog front-end, the digital signal being associated with the first transmission. Operation of block 1505 may be performed according to examples as disclosed herein, such as those mentioned in reference... Figure 2 The described capability indicates the transmission of 215. In some examples, aspects of the operation of 1505 may be provided by reference, etc. Figure 8 The described capability component 825 is used to perform this.

[0195] At 1510, the method may include: receiving a first transmission associated with receiving a gain state of an analog front-end, the gain state including a set of configurations associated with a set of multiple amplifiers at the UE. Operation of block 1510 may be performed according to examples as disclosed herein, such as those mentioned in reference to... Figure 2 The description refers to Send 220. In some examples, aspects of the operation of 1510 can be derived from, as referenced... Figure 8 The described gain state component 830 is used to perform this.

[0196] At 1515, the method may include: linearizing a digital signal associated with a first transmission based on a gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with an analog front end. The operation of block 1515 may be performed according to examples as disclosed herein, such as references... Figure 2 Linearizer 210 or Figure 3 The linearizer 335 is described as an example. In some examples, aspects of the operation of 1515 can be derived from, as in the reference... Figure 8 The described linearizer component 835 is used to perform this.

[0197] At 1520, the method may include: obtaining an output voltage value corresponding to an input voltage value based on a first LUT in a set of LUTs, the first LUT being associated with a gain state. The operation of block 1520 may be performed according to examples disclosed herein, such as those referenced. Figure 2 Linearizer 210 or Figure 3 The linearizer 335 is described as an example. In some examples, aspects of the operation of 1520 can be derived from, as in the reference... Figure 8 The described linearizer component 835 is used to perform this.

[0198] Figure 16 A flowchart illustrating a method 1600 for supporting simulated front-end linearization according to aspects of this disclosure is shown. The operation of method 1600 can be implemented by a network entity or its components as described herein. For example, the operation of method 1600 can be implemented by, as referenced... Figures 1 to 5 as well as Figures 10 to 13 The described network entity performs the functions. In some examples, the network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform aspects of the described functions.

[0199] At 1605, the method may include: receiving a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the analog front-end. Operation of block 1605 may be performed according to examples as disclosed herein, such as those mentioned in reference to... Figure 2 The described capability indicates the transmission of 215. In some examples, aspects of the operation of 1605 can be derived from, as referenced... Figure 12 The described capability manager 1225 is executed.

[0200] At 1610, the method may include: transmitting a second message indicating a frequency domain allocation for a first transmission based on receiving a first message, wherein the second message indicates that the UE linearizes a digital signal. The operation of block 1610 may be performed according to examples as disclosed herein, such as those mentioned in reference to... Figure 5 The frequency allocation for transmission is described. In some examples, aspects of the operation of the 1610 can be described as follows: Figure 12 The frequency component 1230 described is used to perform this.

[0201] Figure 17 A flowchart illustrating a method 1700 supporting simulated front-end linearization according to aspects of this disclosure is shown. The operation of method 1700 can be implemented by a network entity or its components as described herein. For example, the operation of method 1700 can be implemented by, as referenced... Figures 1 to 5 as well as Figures 10 to 13 The described network entity performs the functions. In some examples, the network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform aspects of the described functions.

[0202] At 1705, the method may include: receiving a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the analog front-end. Operation of block 1705 may be performed according to examples as disclosed herein, such as those mentioned in reference to... Figure 2 The described capability indicates the transmission of 215. In some examples, aspects of the operation of 1705 can be derived from, as referenced... Figure 12 The described capability manager 1225 is executed.

[0203] At 1710, the method may include: transmitting a second message indicating a frequency domain allocation for a first transmission based on receiving a first message, wherein the second message indicates that the UE linearizes a digital signal. The operation of block 1710 may be performed according to examples as disclosed herein, such as those mentioned in reference to... Figure 5 The frequency allocation for transmission is described. In some examples, aspects of the operation of the 1710 can be described as follows: Figure 12 The frequency component 1230 described is used to perform this.

[0204] In 1715, the method may include: receiving a request message and transmitting a training signal at a transmission power below a threshold transmission power, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by the UE's analog front-end. Operation of box 1715 may be performed according to examples as disclosed herein, such as those mentioned in reference... Figure 2The description refers to the sending of request message 225. In some examples, aspects of the operation of 1715 may be derived from, as referenced... Figure 12 The request manager 1235 described is executed.

[0205] At 1720, the method may include: sending a message in response to a request message indicating that the UE is permitted to transmit training signals at a transmit power of one or more symbols. The operation of box 1720 may be performed according to examples as disclosed herein, such as those mentioned in reference to... Figure 2 The description refers to the sending of response message 230. In some examples, aspects of the operation of 1720 may be derived from, as referenced... Figure 12 The request manager 1235 described is executed.

[0206] Figure 18 A flowchart illustrating a method 1800 for supporting simulated front-end linearization according to aspects of this disclosure is shown. Operation of method 1800 can be implemented by a UE or its components as described herein. For example, operation of method 1800 can be implemented by, as referenced... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0207] At 1805, the method may include: sending a request message to transmit a training signal at a transmission power below a threshold transmission power, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by the UE's analog front-end. Operation of box 1805 may be performed according to examples as disclosed herein, such as those mentioned in reference... Figure 2 The description refers to the sending of request message 225. In some examples, aspects of the operation of 1805 may be derived from, as referenced... Figure 8 The requested component 840 is executed as described.

[0208] In 1810, the method may include: transmitting a training signal at a transmission power based on a transmission request message. The operation of box 1810 can be described according to examples disclosed herein and referenced. Figure 2 , Figure 3 ,and Figure 5 The operation is performed using one or more training signals as described in the reference. In some examples, aspects of the operation of 1810 can be derived from, as in the reference... Figure 8 The training signal component 845 described is executed.

[0209] In 1815, the method may include: measuring a training signal to estimate one or more parameters. The operation of box 1815 can be based on examples disclosed herein and referenced. Figure 2 , Figure 3 ,and Figure 5The operation is performed using one or more training signals as described in the reference. In some examples, aspects of the operation of 1815 can be derived from, as in the reference... Figure 8 The described parameter component 850 is executed.

[0210] Figure 19 A flowchart illustrating a method 1900 for supporting simulated front-end linearization according to aspects of this disclosure is shown. Operation of method 1900 can be implemented by a UE or its components as described herein. For example, operation of method 1900 can be implemented by, as referenced... Figures 1 to 9 The UE 115 described herein is used to perform this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described function. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described function.

[0211] In 1905, the method may include: sending a request message to transmit a training signal at a transmission power below a threshold transmission power, the training signal being associated with one or more parameters estimated for linearizing a digital signal output by the UE's analog front-end. The operation of box 1905 may be performed according to examples as disclosed herein, such as those mentioned in reference... Figure 2 The description refers to the sending of request message 225. In some examples, aspects of the operation of 1905 may be derived from, as referenced... Figure 8 The requested component 840 is executed as described.

[0212] In 1910, the method may include: receiving, in response to a request message, a message indicating permission for the UE to transmit a training signal at a transmit power of one or more symbols, wherein the training signal is transmitted during one or more symbols. Operation of block 1910 may be performed according to examples as disclosed herein, such as those mentioned in reference to... Figure 2 The description refers to the sending of response message 230. In some examples, aspects of the operation of 1920 may be derived from, as referenced... Figure 8 The requested component 840 is executed as described.

[0213] In box 1915, the method may include: transmitting a training signal at a transmission power based on a transmission request message. The operation of box 1915 can be described according to examples disclosed herein and referenced. Figure 2 , Figure 3 ,and Figure 5 The operation is performed using one or more training signals as described in the reference. In some examples, aspects of the operation of 1915 can be derived from, as in the reference... Figure 8 The training signal component 845 described is executed.

[0214] In box 1920, the method may include: measuring a training signal to estimate one or more parameters. The operation of box 1920 can be based on examples disclosed herein and referenced. Figure 2 , Figure 3 ,and Figure 5 The operation is performed using one or more training signals as described in the reference. In some examples, aspects of the 1920 operation can be derived from, as in the reference... Figure 8 The described parameter component 850 is executed.

[0215] The following provides an overview of the various aspects of this disclosure.

[0216] Aspect 1: A method for wireless communication by a UE, the method comprising: transmitting a first message indicating an ability to linearize a digital signal output by a receiving analog front-end of the UE, the digital signal being associated with a first transmission; receiving the first transmission, the first transmission being associated with a gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE; and linearizing the digital signal associated with the first transmission based at least in part on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end.

[0217] Aspect 2: According to the method of aspect 1, linearizing the digital signal further includes: obtaining the output voltage value corresponding to the input voltage value based at least in part on a first lookup table in a set of lookup tables, the first lookup table being associated with the gain state.

[0218] Aspect 3: According to the method of aspect 2, obtaining the input voltage value further includes: obtaining the input voltage value from the first lookup table based at least in part on the signal-to-noise ratio associated with the noise index corresponding to the digital signal.

[0219] Aspect 4: The method according to any one of Aspects 1 to 3, the method further comprising: receiving a second message indicating a frequency domain allocation for the first transmission based at least in part on transmitting the first message, wherein the second message indicates that the UE linearizes the digital signal.

[0220] Aspect 5: The method according to any one of Aspects 1 to 4, the method further comprising: sending a third message indicating, at least in part, the ability to mitigate blocking frequency bands based on linearizing the digital signal.

[0221] Aspect 6: The method according to aspect 5, the method further comprising: receiving a fourth message indicating a frequency domain allocation based at least in part on the third message, wherein the frequency domain allocation indicates at least one frequency band adjacent to the blocking frequency band.

[0222] Aspect 7: The method according to any one of Aspects 1 to 6, wherein linearizing the digital signal is based at least in part on detecting a temperature change exceeding a threshold.

[0223] Aspect 8: The method according to any one of Aspects 1 to 7, wherein linearizing the digital signal is based at least in part on detecting a change in the gain state, and the receiving analog front end includes at least the plurality of amplifiers at the UE.

[0224] Aspect 9: The method according to any one of Aspects 1 to 8, wherein linearizing the digital signal is based at least in part on detecting a change in the signal-to-noise ratio associated with the digital signal, and the change in the signal-to-noise ratio is based at least in part on a change in the gain state, a change in temperature, or both.

[0225] Aspect 10: A method for wireless communication at a network entity, the method comprising: receiving a first message indicating the ability to linearize a digital signal output by a receiving analog front-end of a UE, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end; and transmitting a second message indicating a frequency domain allocation for the first transmission based at least in part on receiving the first message, wherein the second message instructs the UE to linearize the digital signal.

[0226] Aspect 11: The method according to aspect 10, wherein a third message is received, the third message indicating at least in part the ability to mitigate blocking frequency bands based on linearizing the digital signal.

[0227] Aspect 12: The method according to aspect 11, wherein the frequency domain allocation is based at least in part on receiving the third message to indicate at least one frequency band adjacent to the blocking frequency band.

[0228] Aspect 13: The method according to any one of Aspects 10 to 12, the method further comprising: receiving a request message to transmit a training signal at a transmission power below a threshold transmission power, the training signal being associated with one or more parameters for estimating a digital signal output by the analog front-end of the UE for linearization; and in response to the request message to transmit a message indicating that the UE is permitted to transmit the training signal at a transmission power of one or more symbols.

[0229] Aspect 14: According to the method of aspect 13, the one or more parameters include amplitude modulation (AM) to AM distortion, AM to phase modulation (PM) distortion, a target gain value associated with the analog-to-digital converter of the UE, or any combination thereof.

[0230] Aspect 15: The method according to any one of Aspects 10 to 14, wherein the second message instructs the UE to linearize the digital signal based at least in part on detecting that a temperature change at the UE exceeds a threshold.

[0231] Aspect 16: The method according to any one of Aspects 10 to 15, wherein the second message instructs the UE to linearize the digital signal based at least in part on detecting a change in the gain state of the receiving analog front end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE, and the receiving analog front end including the plurality of amplifiers.

[0232] Aspect 17: The method according to any one of Aspects 10 to 16, wherein the second message instructs the UE to linearize the digital signal based at least in part on detecting a change in the signal-to-noise ratio associated with the digital signal, and the change in the signal-to-noise ratio is based at least in part on a change in gain state, a change in temperature, or both.

[0233] Aspect 18: A method for wireless communication at a UE, the method comprising: sending a request message to transmit a training signal at a transmission power below a threshold transmission power, the training signal being associated with one or more parameters for estimating a digital signal output by a receiving analog front-end of the UE; transmitting the training signal at the transmission power based at least in part on sending the request message; and measuring the training signal to estimate the one or more parameters.

[0234] Aspect 19: The method according to aspect 18, the method further comprising: receiving, in response to the request message, a message indicating permission for the UE to transmit the training signal at a transmit power of one or more symbols, wherein the training signal is transmitted during the one or more symbols.

[0235] Aspect 20: The method according to any one of aspects 18 to 19, wherein estimating the one or more parameters further comprises: generating a set of lookup tables, each of the lookup tables corresponding to a gain state and including a plurality of output voltage values ​​corresponding to a plurality of input voltage values ​​associated with the receiving analog front end.

[0236] Aspect 21: The method according to aspect 20, the method further comprising: receiving a first transmission, the first transmission being associated with a first gain state, the first gain state including a set of configurations associated with a plurality of amplifiers at the UE; and linearizing the digital signal associated with the first transmission based at least in part on the first gain state and a first lookup table corresponding to the first gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front end from the first lookup table.

[0237] Aspect 22: The method according to any one of Aspects 20 to 21, the method further comprising: estimating amplitude modulation (AM) to AM distortion, AM to phase modulation (PM) distortion, or both; and estimating a target gain value based at least in part on the AM to AM distortion, the AM to PM distortion, or both, wherein generating the set lookup table is based at least in part on estimating the target gain value.

[0238] Aspect 23: The method according to any one of aspects 18 to 22, wherein the training signal is linear, at least in part, based on transmitting the training signal at the transmission power.

[0239] Aspect 24: A UE for wireless communication, the UE comprising: one or more memories; and one or more processors, the one or more processors being coupled to the one or more memories and being configured individually or jointly to perform the method according to any one of aspects 1 to 9.

[0240] Aspect 25: A UE for wireless communication, the UE comprising at least one component for performing the method according to any one of aspects 1 to 9.

[0241] Aspect 26: A non-transitory computer-readable medium storing code, said code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 9.

[0242] Aspect 27: A network entity for wireless communication, the network entity comprising: one or more memories; and one or more processors, the one or more processors being coupled to the one or more memories and being configured individually or jointly to perform the method according to any one of aspects 10 to 17.

[0243] Aspect 28: A network entity for wireless communication, the network entity comprising at least one component for performing the method according to any one of aspects 10 to 17.

[0244] Aspect 29: A non-transitory computer-readable medium storing code, said code comprising instructions executable by a processor to perform the method according to any one of aspects 10 to 17.

[0245] Aspect 30: A UE for wireless communication, the UE comprising: one or more memories; and one or more processors, the one or more processors being coupled to the one or more memories and being configured individually or jointly to perform the method according to any one of aspects 18 to 23.

[0246] Aspect 31: A UE for wireless communication, the UE comprising at least one component for performing a method according to any one of aspects 18 to 23.

[0247] Aspect 32: A non-transitory computer-readable medium storing code, said code comprising instructions executable by a processor to perform the method according to any one of aspects 18 to 23.

[0248] It should be noted that the methods described herein describe possible specific implementations, and the operations and steps can be rearranged or otherwise modified, and other specific implementations are also possible. Furthermore, aspects from two or more of these methods can be combined.

[0249] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein are also applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0250] The information and signals described herein can be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof.

[0251] The various exemplary blocks and components described herein can be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic unit, discrete hardware component, or any combination thereof, designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in alternative embodiments, a processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration). Any function or operation described herein that can be performed by a processor may be performed by multiple processors capable of performing the described functions or operations individually or jointly.

[0252] The functions described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. When implemented using software executed by a processor, the functions can be stored as one or more instructions or code on a computer-readable medium or transmitted using one or more instructions or code on a computer-readable medium. Other examples and specific implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features implementing the functions can also be physically located in various locations, including portions distributed such that the functions are implemented at different physical locations.

[0253] Computer-readable media includes both non-transitory computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transitory storage media can be any available medium accessible by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compressed optical disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code components in the form of instructions or data structures, and accessible by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Furthermore, any connection is appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital multifunction discs (DVDs), floppy disks, and Blu-ray discs. Disks can magnetically reproduce data, and optical discs can optically reproduce data using lasers. Combinations of the above are also included within the scope of computer-readable media. Any function or operation described herein that can be performed by memory can be performed by multiple memories capable of performing the described function or operation individually or jointly.

[0254] As used herein (including in the claims), the word "or" used in an enumeration of items (e.g., an enumeration of items accompanied by phrases such as "at least one of" or "one or more of") indicates an inclusive enumeration, such that an enumeration of at least one of, for example, A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0255] As used herein, including in claims, the article “a” preceding a noun is open-ended and is understood to refer to “at least one” or “one or more” of those nouns. Therefore, the terms “a,” “at least one,” “one or more,” and “at least one of one or more” are interchangeable. For example, where a claim enumerates “components” performing one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “component” having a characteristic or performing a function may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent references to a component introduced with the article “a” using the terms “the” or “the” can refer to any or all of the one or more components. For example, a component introduced with the article “a” can be understood to mean “one or more components,” and subsequent reference to “the component” in a claim can be understood as equivalent to referring to “at least one of the one or more components.” Similarly, subsequent references to a component introduced with the terms “the” or “the” as “one or more components” can refer to any or all of the one or more components. For example, reference to "the one or more components" in the subsequent claims can be understood as equivalent to reference to "at least one of the one or more components".

[0256] The term "determine" encompasses a wide range of actions, and therefore, "determine" can include calculation, computation, processing, derivation, investigation, lookup (such as by searching in a table, database, or other data structure), identification, and similar actions. Furthermore, "determine" can include receiving (e.g., receiving information), accessing (e.g., accessing data stored in memory), etc. Additionally, "determine" can include parsing, acquiring, selecting, choosing, creating, and other similar actions.

[0257] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by adding a dash after the reference numeral and a second reference numeral to differentiate between similar components. If only the first reference numeral is used in the description, the description can be applied to any of the similar components having the same first reference numeral, regardless of the second reference numeral or other subsequent reference numerals.

[0258] The description herein, illustrated with reference to the accompanying drawings, describes an example configuration and does not represent all achievable examples or those within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," not "preferred" or "advantageous over other examples." The detailed description includes specific details used to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concept of the described examples.

[0259] The description herein is provided to enable those skilled in the art to implement or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: One or more memory units; and One or more processors, said one or more processors being coupled to said one or more memories and configured individually or collectively as follows: Send a first message indicating the ability to linearize the digital signal output by the UE's receiving analog front end, the digital signal being associated with the first transmission; Receive the first transmission, the first transmission being associated with the gain state of the receiving analog front end, the gain state including a set of configurations associated with multiple amplifiers at the UE; and The digital signal associated with the first transmission is linearized at least in part based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front end.

2. The UE according to claim 1, wherein, To linearize the digital signal, the one or more processors are further configured to: The output voltage value corresponding to the input voltage value is obtained at least in part based on a first lookup table in a set of lookup tables, the first lookup table being associated with the gain state.

3. The UE according to claim 2, wherein, In order to obtain the input voltage value, the one or more processors are further configured to: The input voltage value is obtained from the first lookup table based at least in part on the signal-to-noise ratio associated with the noise index corresponding to the digital signal.

4. The UE according to claim 1, wherein the one or more processors are further configured to: The UE receives a second message indicating a frequency domain allocation for the first transmission, at least in part, based on the transmission of the first message, wherein the second message instructs the UE to linearize the digital signal.

5. The UE of claim 1, wherein the one or more processors are further configured to: A third message is sent, which indicates, at least in part, the ability to mitigate the blocking of frequency bands based on linearizing the digital signal.

6. The UE of claim 5, wherein the one or more processors are further configured to: A fourth message is received, the fourth message indicating a frequency domain allocation based at least in part on the third message, wherein the frequency domain allocation indicates at least one frequency band adjacent to the blocking frequency band.

7. The UE of claim 1, wherein linearizing the digital signal is based at least in part on detecting a temperature change exceeding a threshold.

8. The UE of claim 1, wherein linearizing the digital signal is based at least in part on detecting a change in the gain state, and wherein the receiving analog front end includes at least the plurality of amplifiers at the UE.

9. The UE of claim 1, wherein linearizing the digital signal is based at least in part on detecting a change in the signal-to-noise ratio associated with the digital signal, and wherein the change in the signal-to-noise ratio is based at least in part on a change in the gain state, a change in temperature, or both.

10. A network entity for wireless communication, the network entity comprising: One or more memory units; and One or more processors, said one or more processors being coupled to said one or more memories and configured individually or collectively as follows: Receive a first message indicating the ability to linearize a digital signal output by a user equipment (UE) receiving analog front-end, the digital signal being associated with a first transmission of the UE, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front-end; and At least in part, based on receiving the first message, a second message is sent indicating a frequency domain allocation for the first transmission, wherein the second message instructs the UE to linearize the digital signal.

11. The network entity of claim 10, wherein a third message is received, the third message indicating at least in part the ability to mitigate blocking bandwidth based on linearizing the digital signal.

12. The network entity of claim 11, wherein the frequency domain allocation is at least partially based on receiving the third message to indicate at least one frequency band adjacent to the blocking frequency band.

13. The network entity of claim 10, wherein the one or more processors are further configured to: The system receives a request message and transmits a training signal at a transmission power below a threshold power level. The training signal is associated with one or more parameters estimated for linearizing a digital signal output by the analog front-end of the UE. Based on receiving the request message, a message instructing the UE to transmit the training signal at a transmission power of one or more symbols is sent.

14. The network entity of claim 13, wherein one or more parameters include amplitude modulation (AM) to AM distortion, AM to phase modulation (PM) distortion, a target gain value associated with the analog-to-digital converter of the UE, or any combination thereof.

15. The network entity of claim 10, wherein the second message instructs the UE to linearize the digital signal based at least in part on detecting a temperature change at the UE exceeding a threshold.

16. The network entity of claim 10, wherein the second message instructing the UE to linearize the digital signal is based at least in part on detecting a change in the gain state of the receiving analog front-end, the gain state including a set of configurations associated with a plurality of amplifiers at the UE, and wherein the receiving analog front-end includes the plurality of amplifiers.

17. The network entity of claim 10, wherein the second message instructs the UE to linearize the digital signal based at least in part on detecting a change in the signal-to-noise ratio associated with the digital signal, and wherein the change in the signal-to-noise ratio is based at least in part on a change in gain state, a change in temperature, or both.

18. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: One or more memory units; and One or more processors, said one or more processors being coupled to said one or more memories and configured individually or collectively as follows: A request message is sent to transmit a training signal at a transmission power below a threshold power. The training signal is associated with one or more parameters estimated for linearizing a digital signal output by the analog front-end of the UE. The training signal is transmitted at the transmission power based at least in part on sending the request message; as well as The training signal is measured to estimate the one or more parameters.

19. The UE of claim 18, wherein the one or more processors are further configured to: Based on sending the request message, receive a message indicating that the UE is permitted to transmit the training signal at a transmission power of one or more symbols, wherein the training signal is transmitted during the one or more symbols.

20. The UE according to claim 18, wherein, In order to estimate the one or more parameters, the one or more processors are further configured to: A set of lookup tables is generated, each of which corresponds to a gain state and includes multiple output voltage values ​​corresponding to multiple input voltage values ​​associated with the receiving analog front end.

21. The UE of claim 20, wherein the one or more processors are further configured to: Receive a first transmission, the first transmission being associated with a first gain state, the first gain state including a set of configurations associated with a plurality of amplifiers at the UE; and The digital signal associated with the first transmission is linearized at least in part based on the first gain state and a first lookup table corresponding to the first gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front end from the first lookup table.

22. The UE of claim 20, wherein the one or more processors are further configured to: Estimate amplitude modulation (AM) to AM distortion, AM to phase modulation (PM) distortion, or both; and The target gain value is estimated at least in part based on the AM to AM distortion, the AM to PM distortion, or both, wherein the generation of the set of lookup tables is at least in part based on the estimation of the target gain value.

23. The UE of claim 18, wherein the training signal is linearly based at least in part on transmitting the training signal at the transmit power.

24. A method for wireless communication by a user equipment (UE), the method comprising: Send a first message indicating the ability to linearize the digital signal output by the UE's receiving analog front end, the digital signal being associated with the first transmission; Receive the first transmission, the first transmission being associated with the gain state of the receiving analog front end, the gain state including a set of configurations associated with multiple amplifiers at the UE; and The digital signal associated with the first transmission is linearized at least in part based on the gain state, wherein linearizing the digital signal includes obtaining an output voltage value corresponding to an input voltage value associated with the receiving analog front end.

25. The method of claim 24, wherein linearizing the digital signal further comprises: The output voltage value corresponding to the input voltage value is obtained at least in part based on a first lookup table in a set of lookup tables, the first lookup table being associated with the gain state.

26. The method of claim 25, wherein obtaining the input voltage value further comprises: The input voltage value is obtained from the first lookup table based at least in part on the signal-to-noise ratio associated with the noise index corresponding to the digital signal.

27. The method of claim 24, further comprising: The UE receives a second message indicating a frequency domain allocation for the first transmission, at least in part, based on the transmission of the first message, wherein the second message instructs the UE to linearize the digital signal.

28. The method according to claim 24, further comprising: A third message is sent, which indicates, at least in part, the ability to mitigate the blocking of frequency bands based on linearizing the digital signal.

29. The method according to claim 28, further comprising: A fourth message is received, the fourth message indicating a frequency domain allocation based at least in part on the third message, wherein the frequency domain allocation indicates at least one frequency band adjacent to the blocking frequency band.

30. The method of claim 24, wherein linearizing the digital signal is based at least in part on detecting a change in the gain state associated with the plurality of amplifiers at the UE.

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