Techniques for configuring low noise amplifiers for dual subscriber dual active user equipment

Abstract

Methods, systems, and devices for wireless communication are described for a low noise amplifier (LNA) configuration of a user equipment (UE) operating in a dual subscriber dual activation (DSDA) mode. In the DSDA mode, the UE may establish a first communication link and a second communication link via two or more antenna ports using a first subscriber identity module (SIM) and a second SIM. Based at least in part on the activation of the DSDA mode and a difference between a first received signal strength associated with the first SIM and a second received signal strength associated with the second SIM, the UE may identify, from two or more available LNA configurations, an LNA configuration for receiving at least partially concurrent communications of the first SIM with the second SIM. The UE may receive the at least partially concurrent communication via the two or more antenna ports based at least in part on the identified LNA configuration.

Description

[0001] Cross-reference

[0002] This patent application claims priority to U.S. Patent Application No. 18 / 063,243, filed on December 8, 2022, by EKBATANI et al., entitled "TECHNIQUES TO CONFIGURE LOW NOISE AMPLIFIER FOR DUAL-SUBSCRIBER DUAL-ACTIVE USER EQUIPMENT", which is assigned to the assignee of the present application and is hereby incorporated by reference in its entirety. Field of the Invention

[0003] The following relates to wireless communication, including techniques for configuring a low noise amplifier for dual-subscriber dual-active user equipment. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems may be capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multi-access systems include fourth-generation (4G) systems (such as Long-Term Evolution (LTE) systems, LTE-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 techniques such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (OFDMA), or Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM).

[0005] A wireless multi-access communication system may include one or more base stations or one or more network access nodes, each of which simultaneously supports communication for multiple communication devices, which may also be referred to as user equipment (UE). In some cases, a UE may be capable of supporting multiple Subscriber Identity Module (SIM) cards, each SIM card associated with a unique network subscription, and the UE may use multiple SIM cards to communicate with multiple service providers. Summary of the Invention

[0006] The described techniques relate to improved methods, systems, devices, and apparatuses for techniques that support configuring a low noise amplifier for a dual-subscriber dual-active (DSDA) user equipment. For example, the described techniques provide using a DSDA configuration to select a low noise amplifier (LNA) configuration for communication associated with multiple subscriber identity modules (SIMs). In some cases, a UE operating in a DSDA configuration may determine a difference in received signal strength between SIMs (e.g., based on received signal strength indicator (RSSI)), and select an LNA configuration based on that difference. In some cases, different LNA configurations may be selected based on the amount of power imbalance between different SIMs. For example, in a first power imbalance region, a first LNA configuration may provide for each SIM to use signals from each antenna port and set the LNA gain based on the stronger SIM. In a second power imbalance region, a fallback mode may be entered, in which the lower strength SIM is used to control the LNA gain for one or more antenna ports. The fallback mode may use different gain control options, such as having the stronger SIM control the gain for a first subset of antenna ports and the weaker SIM control the gain for a second subset of antenna ports. Additionally, depending on the level of the imbalance, the stronger SIM may be detuned on the second subset of antenna ports to avoid saturating the signal of the weaker SIM.

[0007] A method for wireless communication at a user equipment (UE) is described. The method may include: in a dual-subscriber dual-active mode, establishing a first communication link using a first SIM of the UE via two or more antenna ports; in the dual-subscriber dual-active mode, establishing a second communication link using a second SIM of the UE via the two or more antenna ports, the dual-subscriber dual-active mode for receiving concurrent communication for at least the first SIM and the second SIM via the two or more antenna ports of the UE, the concurrent communication including a first communication using the first SIM and a second communication using the second SIM; identifying, based on activation of the dual-subscriber dual-active mode, a low noise amplifier configuration for receiving each of the first communication and the second communication from two or more available low noise amplifier configurations, the identification based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication; and receiving the first communication and the second communication via the two or more antenna ports based on the identified low noise amplifier configuration.

[0008] Describes an apparatus for wireless communication at a UE. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions are executable by the processor to cause the apparatus to: in a dual-subscriber dual-active mode, establish a first communication link using a first SIM of the UE via two or more antenna ports; in the dual-subscriber dual-active mode, establish a second communication link using a second SIM of the UE via the two or more antenna ports, the dual-subscriber dual-active mode being for receiving concurrent communications for at least the first SIM and the second SIM via the two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM; identify, based on activation of the dual-subscriber dual-active mode, a low-noise amplifier configuration for receiving each of the first communication and the second communication from two or more available low-noise amplifier configurations, the identification being based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication; and receive the first communication and the second communication via the two or more antenna ports based on the identified low-noise amplifier configuration.

[0009] Describes another apparatus for wireless communication at a UE. The apparatus may include: means for establishing, in a dual-subscriber dual-active mode, a first communication link using a first SIM of the UE via two or more antenna ports; means for establishing, in the dual-subscriber dual-active mode, a second communication link using a second SIM of the UE via the two or more antenna ports, the dual-subscriber dual-active mode being for receiving concurrent communications for at least the first SIM and the second SIM via the two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM; means for identifying, based on activation of the dual-subscriber dual-active mode, a low-noise amplifier configuration for receiving each of the first communication and the second communication from two or more available low-noise amplifier configurations, the identification being based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication; and means for receiving the first communication and the second communication via the two or more antenna ports based on the identified low-noise amplifier configuration.

[0010] Describes a non-transitory computer-readable medium storing code for wireless communication at a UE. The code may include instructions executable by a processor to perform the following operations: in a dual-subscriber dual-active mode, establish a first communication link using a first SIM of the UE via two or more antenna ports; in the dual-subscriber dual-active mode, establish a second communication link using a second SIM of the UE via the two or more antenna ports, the dual-subscriber dual-active mode being for receiving concurrent communications for at least the first SIM and the second SIM via the two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM; identify, based on activation of the dual-subscriber dual-active mode, a low-noise amplifier configuration for receiving each of the first communication and the second communication from two or more available low-noise amplifier configurations, the identification being based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication; and receive the first communication and the second communication via the two or more antenna ports based on the identified low-noise amplifier configuration.

[0011] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, identifying the low-noise amplifier configuration may include operations, features, components, or instructions for the following: measuring the first received signal strength associated with the first communication and the second received signal strength associated with the second communication to determine a difference between the first received signal strength and the second received signal strength; in response to the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, selecting a first low-noise amplifier configuration in which each of the first SIM and the second SIM uses each low-noise amplifier in a set of low-noise amplifiers associated with a set of antenna ports for receiving both the first communication and the second communication; and in response to the difference between the first received signal strength and the second received signal strength exceeding the first threshold, selecting a second low-noise amplifier configuration in which the first SIM controls a first subset of low-noise amplifiers associated with a first subset of the set of antenna ports and the second SIM controls a second subset of low-noise amplifiers associated with a second subset of the set of antenna ports.

[0012] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first subset of low-noise amplifiers and the second subset of low-noise amplifiers are determined based on the magnitude of the difference between the first received signal strength and the second received signal strength. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first SIM controls the gain of each low-noise amplifier in the set of the plurality of low-noise amplifiers in the first low-noise amplifier configuration. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, in the second low-noise amplifier configuration, the first SIM controls the gain of each low-noise amplifier in the first subset of low-noise amplifiers, and the second SIM controls the gain of each low-noise amplifier in the second subset of low-noise amplifiers. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, when the second low-noise amplifier configuration is selected, the first SIM receives the first communication using signals from each antenna port in the first subset of antenna ports and the second subset of antenna ports.

[0013] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, when the second low-noise amplifier configuration is selected, the first SIM does not use any antenna port in the second subset of antenna ports to receive the first communication. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, when the second low-noise amplifier configuration is selected, the first SIM does not use any antenna port in the second subset of antenna ports to receive the first communication, and when the second low-noise amplifier configuration is selected, the second SIM does not use any antenna port in the first subset of antenna ports to receive the second communication.

[0014] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the identified low-noise amplifier configuration provides control over a set of a plurality of low-noise amplifiers at the UE, the set of the plurality of low-noise amplifiers including two or more internal low-noise amplifiers inside the UE's wireless modem and two or more external low-noise amplifiers outside the UE's wireless modem, and wherein the first communication link and the second communication link each include one or more component carriers.

[0015] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, radio frequency signals from each of the two or more external low-noise amplifiers may be split and provided to a respective first internal low-noise amplifier associated with the first SIM and a respective second internal low-noise amplifier associated with the second SIM. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, radio frequency signals from each of the two or more external low-noise amplifiers are provided to an associated internal low-noise amplifier, and outputs from each of the two or more internal low-noise amplifiers are split and provided to separate processing chains associated with the first SIM and the second SIM.

[0016] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first SIM controls automatic gain control for at least a first subset of the set of the plurality of low-noise amplifiers, and the second SIM controls automatic gain control for at least a second subset of the set of the plurality of low-noise amplifiers, and wherein the timing for updating the automatic gain control is based on which of the first SIM or the second SIM controls the associated low-noise amplifier.

[0017] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, identifying the low-noise amplifier configuration may include operations, features, components, or instructions for: determining that a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication exceeds a threshold; and in response to that determination, selecting a low-noise amplifier configuration in which the first SIM controls at least one of the two or more internal low-noise amplifiers and at least one of the two or more external low-noise amplifiers, and in which the second SIM controls at least one of the two or more internal low-noise amplifiers. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the threshold is based on gain control or dynamic tuning range of the two or more internal low-noise amplifiers.

[0018] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: determining that the first SIM may have a higher priority than the second SIM; and mapping a first subset of the two or more antenna ports to the first SIM based on the higher priority of the first SIM, and wherein the low-noise amplifier configuration is based on the mapping. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the receiving may include operations, features, components, or instructions for: when the first communication may have a stronger signal strength than the second communication, setting one or more analog-to-digital converter (ADC) parameters for the first communication based on a frequency offset between the first communication and the second communication.

[0019] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the identifying includes: identifying a first low-noise amplifier configuration based on the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, the first low-noise amplifier configuration specifying that each SIM uses each antenna port and an associated low-noise amplifier to receive a respective first communication and second communication, and wherein the method may include operations, features, components, or instructions for: after identifying the first low-noise amplifier configuration, determining that the difference between the first received signal strength and the second received signal strength exceeds the first threshold; in response to the determining, selecting a second low-noise amplifier configuration, wherein the second low-noise amplifier configuration specifies that the first SIM controls a first subset of the low-noise amplifiers associated with the first subset of the two or more antenna ports, and the second SIM controls a second subset of the low-noise amplifiers associated with the second subset of the two or more antenna ports; receiving the first communication using the first subset of the low-noise amplifiers via the first subset of the antenna ports; and receiving the second communication using the second subset of the low-noise amplifiers via the second subset of the antenna ports.

[0020] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the difference between the first received signal strength and the second received signal strength is determined based on a filtered received signal strength indicator (RSSI) in a sliding window, the filtered RSSI being associated with the first communication and the second communication.

[0021] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the determining may include operations, features, components, or instructions for: determining that the difference between the first received signal strength and the second received signal strength exceeds the first threshold a predetermined number of times within a predetermined period of time.

[0022] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for the following operations: after selecting the second low-noise amplifier configuration, determining that the difference between the first received signal strength and the second received signal strength is less than or equal to a second threshold; in response to determining that the difference between the first received signal strength and the second received signal strength is less than or equal to the second threshold, selecting the first low-noise amplifier configuration; and receiving the first communication and the second communication via the two or more antenna ports based on the first low-noise amplifier configuration. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the second threshold is less than the first threshold.

[0023] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, during a period when the first SIM is not in the sleep mode, the first SIM controls a set of multiple low-noise amplifiers in the first low-noise amplifier configuration, and during a period when the first SIM is in the sleep mode, the second SIM controls the set of multiple low-noise amplifiers in the first low-noise amplifier configuration. In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first SIM pauses communication during one or more time slots based on a timing drift associated with the first communication or a time-division duplex (TDD) configuration mismatch between the first communication and the second communication.

[0024] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, based on the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, the first low-noise amplifier configuration for receiving the first communication and the second communication in the two or more available low-noise amplifier configurations is identified, the first low-noise amplifier configuration specifies that each SIM uses each antenna port and the associated low-noise amplifier to receive the corresponding first communication and second communication, and wherein when the first received signal strength exceeds the second received signal strength, the first SIM controls the gain control for each of the associated low-noise amplifiers in the associated low-noise amplifiers.

[0025] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the identification may include operations, features, components, or instructions for the following operations: identifying a first low-noise amplifier configuration in response to the UE being in a first state, in which the difference between the first received signal strength and the second received signal strength is less than or equal to a first threshold, and each SIM uses each of the two or more antenna ports for the concurrent communication; identifying a second low-noise amplifier configuration in response to the UE being in a second state, in which the difference between the first received signal strength and the second received signal strength exceeds the first threshold, and the second low-noise amplifier configuration specifies that one of the first SIM or the second SIM that may have a lower service priority provides gain control for a first subset of the two or more antenna ports having a relatively large received signal strength difference, and the other of the first SIM or the second SIM provides gain control for the other antenna ports outside the first subset of the two or more antenna ports; and identifying a third low-noise amplifier configuration in response to the UE being in a third state, in which the difference between the first received signal strength and the second received signal strength exceeds a second threshold greater than the first threshold, and the third low-noise amplifier configuration specifies that one of the first SIM or the second SIM that may have a higher service priority uses only a first subset of the two or more antenna ports having a relatively small received signal strength difference, and the other of the first SIM or the second SIM uses only one or more other antenna ports outside the first subset of the two or more antenna ports. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Examples of wireless communication systems are illustrated that support techniques for configuring a low-noise amplifier for a dual-subscriber dual-active (DSDA) user equipment in accordance with one or more aspects of the present disclosure.

[0027] Figure 2 Examples of wireless communication systems are illustrated that support techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure.

[0028] Figure 3A 、 Figure 3B and Figure 3C Examples of receive chain configurations are illustrated that support techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure.

[0029] Figure 4A and Figure 4B Examples of LNA control configurations are illustrated that support techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure.

[0030] Figure 5 Illustrates an exemplary fallback mode that supports techniques for configuring an LNA for DSDA user equipment according to one or more aspects of the present disclosure.

[0031] Figure 6 An example of a state diagram of a fallback mode that supports techniques for configuring an LNA for DSDA user equipment according to one or more aspects of the present disclosure.

[0032] Figure 7 and Figure 8 A block diagram of a device that illustrates techniques for configuring an LNA for DSDA user equipment according to one or more aspects of the present disclosure.

[0033] Figure 9 A block diagram of a communication manager that illustrates techniques for configuring an LNA for DSDA user equipment according to one or more aspects of the present disclosure.

[0034] Figure 10 An illustration of a system including a device that supports techniques for configuring an LNA for DSDA user equipment according to one or more aspects of the present disclosure.

[0035] Figures 11 to 17 A flowchart that illustrates a method that shows techniques for configuring an LNA for DSDA user equipment according to one or more aspects of the present disclosure. Detailed Description

[0036] In some wireless communication systems, a user equipment (UE) may include two or more subscriber identity modules (SIMs), where each SIM is associated with a different connection through which the UE can communicate. For example, a first SIM may support communication with a first mobile network operator (MNO), and a second SIM may support communication with a second MNO. In other examples, in a co-banded dual SIM dual active (DSDA) configuration, different SIMs may be associated with the same operator (e.g., a first MNO). Thus, in some cases, the UE may support operation according to DSDA such that each of two or more SIMs is concurrently active, where a first subscriber and a second subscriber in a connected mode (e.g., a first SIM and a second SIM, which may also be referred to as a first sub-SIM and a second sub-SIM) may share RF resources such as RF components and baseband resources. The RF components may include RF front-end devices such as a transmit chain, a transmit power amplifier (PA), a receive chain, an antenna switch, an antenna, a band selection switch, a receive low noise amplifier (LNA), etc. The baseband resources may include processing resources (e.g., computing resources) and memory resources that provide computing for maintaining one or more communication links of the UE, enhancing the quality of one or more communication links, or any combination thereof. Although the various examples discussed herein relate to cellular wireless communication, the described techniques may be used in any type of system in which the RF receiving components of the UE are shared to communicate with two or more separate networks (such as, for example, a wireless local area network (WLAN) accessed by the UE via an associated access point).

[0037] In some cases, to reduce cost, hardware component space, and processing power, multiple SIMs may share the same set of RF components (e.g., antennas, LNAs, etc.). In some examples, the receive component may include one or more LNAs associated with one or more antenna ports, where the same set of automatic gain control (AGC) settings is used for each SIM. Such component sharing and LNA configuration provide effective communication when each SIM has a received signal associated therewith having a similar power level. However, in some cases, one SIM may be closer to its serving cell than another SIM, which may result in a relatively large power imbalance between the signals of each SIM. In some existing systems, the stronger signal may be used to set the LNA gain, which may result in reduced reliability in decoding the weaker signal. Additionally, in some cases, the weaker signal may carry higher priority information, and setting the LNA gain based on the stronger signal may affect the reliability of such higher priority information. Additionally, if the SIM with the weaker signal is used to set the LNA gain, it may cause saturation of the LNA for the stronger signal.

[0038] Enhancements to DSDA operation using shared RF components are provided in accordance with various aspects discussed herein. In some aspects, a UE operating in a DSDA configuration may determine a difference in received signal strength between SIMs (e.g., based on received signal strength indicator (RSSI)), and select an LNA configuration based on that difference. In some cases, two or more power imbalance regions may be defined (e.g., hard-coded at the UE wireless modem or configurable by the UE manufacturer), and different LNA configurations may be selected based on the amount of power imbalance. For example, in a first power imbalance region where the difference in signal strength is less than a threshold (e.g., RSSI difference between SIMs ≤ 10 dB), a first LNA configuration (e.g., default configuration) may be used, in which each SIM uses signals from each antenna port, and the LNA gain is set based on the stronger SIM. In a second power imbalance region where the difference in signal strength is greater than the threshold (e.g., RSSI difference between SIMs > 10 dB), a fallback mode may be entered, in which the lower strength SIM is used to control the LNA gain for one or more antenna ports. The fallback mode may use different gain control options, such as having the stronger SIM control the gain for a first subset of antenna ports and the weaker SIM control the gain for a second subset of antenna ports. Additionally, depending on the level of the imbalance, the stronger SIM may be detuned on the second subset of antenna ports to avoid saturating the signal of the weaker SIM.

[0039] Various aspects of the subject matter described in this disclosure may be implemented to achieve one or more of the following potential advantages. For example, based on implementing the techniques of this disclosure, a UE may use an RF component configuration for two or more SIMs in which the LNA configuration is selected based on the difference in signal strength of the SIMs to provide efficient communication at the UE. For example, providing control over the gain control settings of the LNA based on conditions at the UE may allow the UE to obtain control over different SIMs based on the current conditions at each SIM. Such techniques may thus enhance UE efficiency, increase data rates, enhance reliability at each SIM, and provide an enhanced user experience.

[0040] Aspects of the present disclosure are first described in the context of a wireless communication system. Aspects of the present disclosure are further illustrated by a receive chain configuration, state diagram, apparatus diagram, system diagram, and flow chart that relate to techniques for configuring an LNA for a DSDA user equipment, and aspects of the present disclosure are described with reference to these figures.

[0041] Figure 1An example of a wireless communication system 100 that illustrates techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure is provided. 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 LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies including future systems and radio technologies not explicitly mentioned herein.

[0042] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication system 100 and may include devices in different forms or having different capabilities. In various examples, the network entities 105 may be referred to as network elements, mobility elements, radio access network (RAN) nodes, or network equipment, among other names. In some examples, the network entities 105 and the UEs 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, the network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) within which the UEs 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area within which the network entity 105 and the UEs 115 may support signal communication in accordance with one or more radio access technologies (RATs).

[0043] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile, or stationary and mobile at different times. The UEs 115 may be devices in different forms or having different capabilities. Figure 1 Some example UEs 115 are illustrated. The UEs 115 described herein may be capable of supporting communication with various types of devices (such as Figure 1 other UEs 115 or network entities 105 as shown).

[0044] As described herein, a node of the wireless communication system 100 (which may be referred to as a network node or a wireless node) may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, a device, an equipment, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, the node may be a UE 115. As another example, the node may be a network entity 105. As yet another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a 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 the disclosure of UE 115, network entity 105, device, equipment, computing system, etc. as nodes. For example, the disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.

[0045] In some examples, the network entity 105 may communicate with the core network 130, or with each other, or both. For example, the network entity 105 may communicate with the 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, the network entity 105 may communicate with each other directly (e.g., directly between network entities 105) or indirectly (e.g., via the core network 130) via the backhaul communication link 120 (e.g., according to X2, Xn, or other interface protocols). In some examples, the network entity 105 may communicate with each other via a midhaul communication link 162 (e.g., according to a midhaul interface protocol) or a fronthaul communication link 168 (e.g., according to a fronthaul interface protocol) or any combination thereof. The backhaul communication link 120, the midhaul communication link 162, or the fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, optical fiber links), one or more wireless links (e.g., radio links, wireless optical links), etc. or various combinations thereof. The UE 115 may communicate with the core network 130 via a communication link 155.

[0046] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., transceiver base station, radio base station, NR base station, access point, radio transceiver, NodeB, eNodeB (eNB), next-generation NodeB or gigabit NodeB (either of which may be referred to as a gNB), 5G NB, next-generation eNB (ng-eNB), home NodeB, home eNodeB, or other suitable terms). In some examples, the network entity 105 (e.g., base station 140) may be implemented in an integrated (e.g., monolithic, stand-alone) 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).

[0047] In some examples, the network entity 105 may be implemented in a disaggregated architecture (e.g., disaggregated base station architecture, disaggregated RAN architecture) that may be configured to utilize a protocol stack physically or logically distributed between 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, the 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 (near-RT RIC), a non-real-time RIC (non-RT RIC)), a service management and orchestration (SMO) 180 system, or any combination thereof. The RU 170 may also be referred to as a radio head, an intelligent radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmit receive point (TRP). One or more components of the network entity 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 of the disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU), a virtual DU (VDU), a virtual RU (VRU)).

[0048] The functional split between the CU 160, DU 165, and RU 170 is flexible and can support different functions, depending on which functions are performed at the CU 160, DU 165, or RU 170 (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof). For example, a functional split of the protocol stack can be adopted between the CU 160 and the DU 165 such that the CU 160 can support one or more layers of the protocol stack and the DU 165 can support one or more different layers of the protocol stack. In some examples, the CU 160 can host higher protocol layer (e.g., layer 3 (L3), layer 2 (L2)) functions and signaling (e.g., radio resource control (RRC), service data adaptation protocol (SDAP), packet data convergence protocol (PDCP)). The CU 160 can be connected to one or more DU 165s or RU 170s, and one or more DU 165s or RU 170s can host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, media access control (MAC) layer) functions and signaling, and can each be at least partially controlled by the CU 160. Additionally or alternatively, a functional split of the protocol stack can be adopted between the DU 165 and the RU 170 such that the DU 165 can support one or more layers of the protocol stack and the RU 170 can support one or more different layers of the protocol stack. The DU 165 can support one or more different cells (e.g., via one or more RU 170s). In some cases, the functional split between the CU 160 and the DU 165 or between the DU 165 and the RU 170 can be within a protocol layer (e.g., some functions of a protocol layer can be performed by one of the CU 160, DU 165, or RU 170, while other functions of that protocol layer are performed by a different one of the CU 160, DU 165, or RU 170). The CU 160 can be further functionally split into a CU control plane (CU-CP) and a CU user plane (CU-UP) function. The CU 160 can be connected to one or more DU 165s via an intermediate transport communication link 162 (e.g., F1, F1-c, F1-u), and the DU 165 can be connected to one or more RU 170s via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface). In some examples, the intermediate transport communication link 162 or the fronthaul communication link 168 can be implemented according to the interfaces (e.g., channels) between the layers of the protocol stack, which are supported by the respective network entities 105 communicating via these communication links.

[0049] In some wireless communication systems (e.g., wireless communication system 100), the infrastructure and spectrum resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections and thus provide 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 DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with a 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 nodes 104) via the supported access and backhaul links (e.g., backhaul communication link 120). An 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 a UE 115 or may share the same antennas (e.g., of an RU 170 of the IAB node 104) used for access via the DU 165 of the IAB node 104 (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, the IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB nodes 104, UEs 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the split RAN architecture (e.g., one or more IAB nodes 104 or components of an IAB node 104) may be configured to operate according to the techniques described herein.

[0050] In the context of the techniques described herein being applied to a split RAN architecture, one or more components of the split RAN architecture may be configured to support techniques for configuring an LNA for a DSDA user equipment as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., base station 140) may additionally or alternatively be performed by one or more components of the split RAN architecture (e.g., IAB nodes 104, DUs 165, CUs 160, RUs 170, RIC 175, SMO 180).

[0051] The UE 115 may include or may be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or some other suitable term, where "device" may also be referred to as a unit, station, terminal, or client, etc. The UE 115 may also include or may 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, the UE 115 may include or may 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, vehicles, meters, etc.

[0052] The UE 115 described herein may be capable of communicating with various types of devices such as other UE 115s that may sometimes act as relays, as well as network entity 105 and network equipment including macro eNB or gNB, small cell eNB or gNB, or relay base stations, etc., as Figure 1 shown.

[0053] The UE 115 and the network entity 105 may communicate wirelessly 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" may refer to a set of RF spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion (e.g., bandwidth part (BWP)) of an RF spectrum band that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating carrier operation, user data, or other signaling. The wireless communication system 100 may support communication with the UE 115 using carrier aggregation or multi-carrier operation. According to the carrier aggregation configuration, the UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for both frequency division duplex (FDD) and time division duplex (TDD) component carriers. Communication between the network entity 105 and other devices may refer to communication between these devices and any part (e.g., entity, sub-entity) of the network entity 105. For example, the terms "transmit", "receive", or "communicate" when referring to the network entity 105 may refer to any part of the network entity 105 of the RAN (e.g., base station 140, CU 160, DU 165, RU 170) communicating with another device (e.g., directly or via one or more other network entities 105).

[0054] In some examples, such as in a carrier aggregation configuration, a carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunications system terrestrial radio access (E-UTRA) absolute RF channel number (EARFCN)), and may be identified according to a channel raster used for discovery by UE 115. A carrier may operate in an independent mode, in which case initial acquisition and connection may be performed by UE 115 via the carrier, or a carrier may operate in a non-independent mode, in which case a different carrier (e.g., of the same or different radio access technology) is used to anchor the connection.

[0055] The communication link 125 shown in the wireless communication system 100 may include a downlink transmission (e.g., a forward link transmission) from the network entity 105 to UE 115, an uplink transmission (e.g., a return link transmission) from UE 115 to the network entity 105, or both, as well as other transmission configurations. A carrier may carry downlink communication or uplink communication (e.g., in FDD mode), or may be configured to carry both downlink communication and uplink communication (e.g., in TDD mode).

[0056] A carrier may be associated with a specific bandwidth of the RF spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or the wireless communication system 100. For example, the carrier bandwidth may be one of a set of bandwidths of carriers of a particular radio access technology (e.g., 1.4 megahertz (MHz), 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz). Devices of the wireless communication system 100 (e.g., the network entity 105, UE 115, or both) may have a hardware configuration that supports communication using a specific carrier bandwidth, or may be configured to support communication using one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a network entity 105 or UE 115 that supports concurrent communication using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate using a portion (e.g., a subband, a BWP) or all of the carrier bandwidth.

[0057] 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 spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may refer to the resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier. In this case, the symbol period and the 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., during the transmission duration) and a relatively high-order modulation scheme may correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and space resources (e.g., spatial layers or beams), and the use of multiple space resources may increase the data rate or data integrity for communication with UE 115.

[0058] The time interval for the network entity 105 or UE 115 can be expressed as a multiple of a basic time unit, which may refer to, for example, the sampling period T s = 1 / (Δf max ·N f ) seconds, where Δf max can represent the supported subcarrier spacing, and N f can represent the supported discrete Fourier transform (DFT) size. The time interval of the communication resources can be organized according to radio frames each having 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).

[0059] Each frame may include a plurality of consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a certain 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 certain 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, a time slot may be further divided into a plurality of mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., N f ones) sampling periods. The duration of the symbol period may depend on the subcarrier spacing or the operating frequency band.

[0060] A subframe, a time slot, a mini-slot, or a symbol can be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 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)).

[0061] Physical channels can be multiplexed according to various techniques for communication using a carrier. For example, one or more of time-division multiplexing (TDM) techniques, frequency-division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels for signaling via a downlink carrier. The control region of a 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 a carrier or a subset of the system bandwidth. One or more control regions (e.g., CORESETs) can be configured for a set of UEs 115. For example, one or more of the UEs 115 can monitor or search a control region for control information according to one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level of a control channel candidate can refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with the encoded information for a control information format having a given payload size. The search space set can include: a common search space set configured to transmit control information to a plurality of UEs 115, and a UE-specific search space set for transmitting control information to a specific UE 115.

[0062] The network entity 105 can provide communication coverage via one or more cells (e.g., macro cells, small cells, hotspots, or other types of cells or any combination thereof). The term "cell" can refer to a logical communication entity for communicating with the network entity 105 (e.g., using a carrier) and can be associated with an identifier for distinguishing adjacent cells (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other identifier). In some examples, a cell can also refer to a coverage area 110 or a portion of the coverage area 110 (e.g., a sector) within which the logical communication entity operates. Depending on various factors (such as the capabilities of the network entity 105), the range of such cells can be from a smaller area (e.g., a structure, a subset of a structure) to a larger area. For example, a cell can be or can include a building, a subset of a building, or an external space between or overlapping the coverage areas 110, etc.

[0063] Macro cells typically cover a relatively large geographical area (e.g., with a radius of several kilometers) and may allow unrestricted access to UEs 115 having a service subscription with the network provider that supports the macro cell. Compared to macro cells, small cells may be associated with lower power network entities 105 (e.g., lower power base stations 140), and small cells may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to UEs 115 having a service subscription with the network provider, or may provide restricted access to UEs 115 associated with the small cell (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with users in a home or office). Network entity 105 may support one or more cells and may also support communication via one or more cells using one or more component carriers.

[0064] In some examples, a carrier may support multiple cells and may be configured with different cells according to different protocol types that may provide access for different types of devices (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)).

[0065] In some examples, network entity 105 (e.g., base station 140, RU 170) may be movable and thus provide communication coverage for a moving coverage area 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but 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.

[0066] The wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the 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 communication 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 commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.

[0067] In some examples, UE 115 may be configured to support communicating directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 performing D2D communication in a group may be within the coverage area 110 of a network entity 105 (e.g., base station 140, RU 170), and the network entity may support aspects of such D2D communication configured (e.g., scheduled) by the network entity 105. In some examples, one or more UEs 115 in such a group may be outside the coverage area 110 of the network entity 105, or may otherwise be unable or not configured to receive transmissions from the network entity 105. In some examples, a group of UEs 115 communicating via D2D communication may support a one-to-many (1:M) system, where each UE 115 sends to each of the other UEs 115 in the group. In some examples, the network entity 105 may facilitate the scheduling of resources for D2D communication. In some other examples, D2D communication may be performed between UEs 115 without involving the network entity 105.

[0068] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity for managing access and mobility (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) and at least one user plane entity for routing packets or interconnecting to an external network (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)). The control plane entity may manage non-access stratum (NAS) functions, such as the mobility, authentication, and bearer management of UEs 115 served by a network entity 105 (e.g., base station 140) associated with the core network 130. User IP packets may be passed through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the IP services 150 of one or more network operators. The IP services 150 may include access to the Internet, an intranet, an IP multimedia subsystem (IMS), or packet-switched streaming services.

[0069] The wireless communication system 100 may operate using one or more frequency bands that may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or the decimeter band because, in terms of length, the wavelength ranges from approximately one decimeter to one meter. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clutter, but these waves may be sufficient to penetrate structures so that a macro cell can serve a UE 115 located indoors. Compared to communications using smaller frequencies and longer wavelengths in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz, communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers).

[0070] The wireless communication system 100 may utilize licensed and unlicensed RF spectrum bands. For example, the wireless communication system 100 may use an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band to employ licensed-assisted access (LAA), long term evolution-unlicensed (LTE-U) radio access technology, or NR technology. When operating using an unlicensed RF spectrum band, devices such as the network entity 105 and the UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using an unlicensed band may be combined with component carriers operating using a licensed band based on a carrier aggregation configuration (e.g., LAA). Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, peer-to-peer (P2P) transmissions, device-to-device (D2D) transmissions, and the like.

[0071] The network entity 105 (e.g., the base station 140, the RU 170) or the UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the network entity 105 or the UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations 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 the network entity 105 may be located at different geographical locations. The network entity 105 may include an antenna array having a set of antenna ports arranged in multiple rows and columns that the network entity 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, an antenna panel may support RF beamforming for signals transmitted via an antenna port.

[0072] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting device or a receiving device (e.g., network entity 105, UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming can be achieved by combining signals communicated via the antenna elements of an antenna array such that some signals propagating in a particular direction relative to the antenna array experience constructive interference while other signals experience destructive interference. The adjustment of the signals communicated via the antenna elements can include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to the signals carried via the antenna elements associated with the device. The adjustment associated with each of these antenna elements can be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting device or the receiving device or relative to some other direction).

[0073] The wireless communication system 100 can be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication at the bearer or PDCP layer can be IP-based. The RLC layer can perform packet segmentation and reassembly for communication via logical channels. The MAC layer can perform priority handling and multiplexing of logical channels into transport channels. The MAC layer can also implement error detection techniques, error correction techniques, or both to support retransmission to improve link efficiency. In the control plane, the RRC layer can provide the establishment, configuration, and maintenance of an RRC connection that supports the radio bearers for user plane data between the UE 115 and the network entity 105 or the core network 130. The PHY layer can map the transport channels to physical channels.

[0074] In accordance with various aspects, one or more UEs 115 may include two or more SIMs and may select an LNA configuration for communication associated with the multiple SIMs using a DSDA configuration in accordance with the techniques discussed herein. In some cases, a UE 115 operating in a DSDA configuration may determine a difference in received signal strength between SIMs (e.g., based on RSSI) and select an LNA configuration from two or more different LNA configurations based on the difference. In some cases, different LNA configurations may be selected based on an amount of power imbalance between different SIMs. For example, in a first power imbalance region, a first LNA configuration may dictate that each SIM use signals from each antenna port and set the LNA gain based on the stronger SIM. In a second power imbalance region, a fallback mode may be entered in which the lower strength SIM is used to control the LNA gain of one or more antenna ports. The fallback mode may use different gain control options, such as having the stronger SIM control the gain for a first subset of antenna ports and the weaker SIM control the gain for a second subset of antenna ports. Additionally, depending on the level of the imbalance, the stronger SIM may be detuned on the second subset of antenna ports to avoid saturating the signal of the weaker SIM.

[0075] Figure 2 An example of a wireless communication system 200 is illustrated that supports techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. In Figure 2 the example, the wireless communication system 200 may include a first network entity 105-a, a second network entity 105-b, and a UE 115-a, which may be relative to Figure 1Examples of corresponding devices described. The first network entity 105-a may provide communication for a first network or a first cell associated with the first SIM 230 at the UE 115-a, and the second network entity 105-b may provide communication for a second network or a second cell associated with the second SIM 235 at the UE 115-a. The first network entity 105-a may send downlink communication 205 to the UE 115-a (e.g., via one or more component carriers), and the UE 115-a may send uplink communication 210 to the first network entity 105-a (e.g., via one or more component carriers), where the downlink communication 205 and the uplink communication 210 are associated with the first SIM 230. Similarly, the second network entity 105-b may send downlink communication 215 to the UE 115-a (e.g., via one or more component carriers), and the UE 115-a may send uplink communication 220 to the second network entity 105-b (e.g., via one or more component carriers), where the downlink communication 215 and the uplink communication 220 are associated with the second SIM 235. The first SIM 230 and the second SIM 235 may be managed by the SIM manager 225 of the UE 115-a.

[0076] To support communication between the first network entity 105-a, the second network entity 105-b, and the UE 115-a, each network entity 105 may send one or more reference signals 250 (e.g., channel state information (CSI) reference signals, synchronization signal blocks (SSBs), demodulation reference signals (DMRSs), tracking reference signals (TRSs), etc. in one or more downlink transmissions 255). The UE 115-a may measure one or more metrics of the received reference signals 250 and provide a measurement report to the network entity 105 (e.g., in an uplink transmission 260). In some cases, the SIM manager 225 may include an LNA manager 240, and the UE 115-a may determine an LNA configuration for concurrent DSDA communication based on one or more metrics measured from the reference signals 250, one or more characteristics of the communication associated with each SIM, and the set of available RF components at the UE 115-a that are available for each SIM.

[0077] For example, the first SIM 230 and the second SIM 235 may operate according to a DSDA configuration. Such a DSDA configuration may provide the UE with enhanced capabilities for performing multiple different communications with multiple different network entities 105 in a concurrent manner. To reduce cost and hardware component space, in some cases, two or more SIMs may share the same set of RF components (e.g., antenna ports, LNAs, switches, baseband processing resources, etc.). Techniques such as those discussed herein may provide an LNA configuration at the UE 115-a based on one or more metrics from measurements of the reference signal 250. In some cases, when operating in a DSDA configuration, the UE 115-a may determine the difference in received signal strength between the reference signal 250-a of the first network entity 105-a and the reference signal 250-b of the second network entity 105-b (e.g., based on RSSI), and the LNA manager 240 may select an LNA configuration based on this difference. In some cases, two or more power imbalance regions may be defined (e.g., hard-coded at the wireless modem of the UE 115-a or configurable by the manufacturer of the UE 115-a), and different LNA configurations may be selected based on the amount of power imbalance.

[0078] For example, in a first power imbalance region where the difference in signal strength is less than a threshold (e.g., RSSI difference ≤ 10 dB), a first LNA configuration (e.g., a default configuration) may be used in which both the first SIM 230 and the second SIM 235 each use signals from the same antenna port, and the LNA gain is set based on which of the first SIM 230 or the second SIM 235 has a higher measured signal strength. In a second power imbalance region where the difference in signal strength is greater than the threshold (e.g., RSSI difference > 10 dB), a fallback mode may be entered in which the lower-strength SIM is used to control the LNA gain of one or more antenna ports. The fallback mode may use different gain control options, such as having the stronger SIM control the gain for a first subset of antenna ports and the weaker SIM control the gain for a second subset of antenna ports. Additionally, depending on the level of the imbalance, the stronger SIM may be detuned on the second subset of antenna ports to avoid saturating the signal of the weaker SIM. Referring to FIGS. 3 through Figure 6 discusses various examples of LNA configurations and fallback modes.

[0079] Figure 3A 、 Figure 3B and Figure 3C illustrates an example of a receive chain configuration 300 that supports techniques for configuring an LNA for a DSDA user equipment according to one or more aspects of the present disclosure. In some examples, the receive chain configuration 300 may be implemented by, as referenced Figure 1 andFigure 2 Aspects of the wireless communication system 100 or 200 described may be implemented or made implementable with reference to Figure 1 and Figure 2 aspects of the wireless communication system 100 or 200 described. In some examples, Figures 3A to 3C the configurations illustrated in may be implemented by a transmitting device (e.g., a UE) supporting concurrent communication on multiple SIMs (e.g., with one or more cellular networks or WLANs), as described herein. The configuration may be implemented by a UE or its components as described herein, or may be performed by a modem, chipset, and / or communication manager as discussed herein. In some examples, the UE or associated components may execute an instruction set to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0080] Figure 3AShows a first example receive chain configuration 300-a, where multiple SIMs can share an LNA architecture. In this example, the RF components shared among multiple SIMs may include an antenna element 305-a, a radio frequency front end (RFFE) 310-a, and an external LNA (eLNA) 315-a. The eLNA 315-a can be external to a radio component 320-a (e.g., the radio portion of a wireless modem chip or chipset that can provide a software defined radio (SDR)). An external LNA such as the eLNA 315-a can provide additional gain control that, when used in conjunction with one or more internal LNAs (iLNAs) 325 (e.g., a first iLNA 325-a and a second iLNA 325-b) within the radio component 320-a, provides more versatile gain control and tolerance to cross-SIM imbalance. In this example, the output of the eLNA 315-a can be split and provided to separate RF chains associated with different SIMs (e.g., a first RF chain for SUB1 and a second RF chain for SUB2). In this example, the first RF chain includes a first iLNA 325-a, a first mixer 330-a (e.g., which mixes the received signal with a local oscillator to generate a baseband signal), a first baseband filter (BBF) 335-a, and a first analog-to-digital converter (ADC) 340-a, which can be provided within the radio component 320-a (e.g., in the SDR). The first RF chain may also include a wideband (WB) filter 345-a and a narrowband (NB) filter 350-a. The second RF chain associated with the second SIM may include a second iLNA 325-b, a second mixer 330-b, a second BBF 335-b, and a second ADC 340-b, which can be provided within the radio component 320-a (e.g., in the SDR). The second RF chain may also include a WB filter 345-b and a NB filter 350-b.

[0081] In other examples, there may be no external LNA, and the output of the internal LNA may be split for different receive chains associated with different SIMs. Figure 3BAn example of such a receive chain configuration 300-b is shown. In this example, the RF components that are shared again among multiple SIMs may include the antenna element 305-b and the RFFE 310-b, which may be external to the radio component 320-b (e.g., the radio part of a wireless modem chip or chipset that may provide SDR). In this example, the iLNA 325-c may receive a signal from the RFFE 310-b, and the output of the iLNA 325-c may be split and provided to separate RF chains associated with different SIMs (e.g., a first RF chain for SUB1 and a second RF chain for SUB2). In this example, the first RF chain includes a first mixer 330-c, a first BBF 335-c, and a first ADC 340-c, which may be provided in the radio component 320-b (e.g., in the SDR). The first RF chain may also include a WB filter 345-c and an NB filter 350-c. The second RF chain associated with the second SIM may include a second mixer 330-d, a second BBF 335-d, and a second ADC 340-d, which may be provided in the radio component 320-b (e.g., in the SDR). The second RF chain may also include a WB filter 345-d and an NB filter 350-d.

[0082] Figure 3C An example of the default receive chain configuration 300-c is shown. In this example, the signal from the LNA may not be split for different SIMs, and all RF components of the receive chain may be shared among multiple SIMs, or the UE may degrade to operate on only one SIM (e.g., in a severely unbalanced situation, one SIM may be disabled, such as the lower-priority SIM). Similar to Figure 3A and Figure 3B other examples, the RF components may include the antenna element 305-c, the RFFE 310-c, and the eLNA 315-b, which are external to the radio component 320-c (e.g., the radio part of a wireless modem chip or chipset that may provide SDR). In this example, the iLNA 325-d may receive a signal from the RFFE 310-b and provide the amplified signal to a mixer 330-e, a BBF 335-e, and an ADC 340-e, which may be provided in the radio component 320-c (e.g., in the SDR). The RF chain of this example may also include a WB filter 345-e and an NB filter 350-e.

[0083] In some cases, the UE may configure or reconfigure radio component 320 based on the amount of imbalance in received signal strength between different SIMs. As discussed herein, in cases where the imbalance is relatively high (e.g., exceeding a first threshold such as 10 dB), the radio component may be configured to provide splitting where signals from different LNAs (e.g., eLNA 315, iLNA 325, or any combination thereof) may be split for processing associated with a particular SIM. In some cases, the UE may not include an external LNA, and the received signal may be split at iLNA 325 (e.g., as illustrated in receive chain configuration 300-b). Thus, the LNA configuration may be selected and updated based on the imbalance in received signal strength, which may enhance throughput and reliability by allowing more reliable signal processing of the lower strength signals. Additionally, in some cases, the LNA configuration may be based on the service priority associated with the SIM. For example, a high service priority SIM card may be used for higher priority communications such as voice communications (e.g., VoNR) and have a weaker RSSI, while a lower service priority SIM card may be used for lower priority communications (e.g., relatively time-insensitive mobile broadband communications) and have a stronger RSSI. In cases where each SIM uses the same frequency band (e.g., in-band or co-band DSDA), techniques such as those discussed herein may provide configuration flexibility to enhance communications for multiple SIMs while sharing RF components for that SIM use. In some cases, there may be a hybrid scenario where some receive paths may have an associated eLNA 315 and the outputs may be split for different SIMs, while other receive paths may only have an iLNA 325 that may split the output of the iLNA for different SIMs. Referring to FIGS. 4 through Figure 6 Examples of different LNA configuration and control techniques are discussed.

[0084] Figure 4A and Figure 4B FIG. illustrates an example of an LNA control configuration 400 that supports techniques for configuring an LNA for a DSDA user equipment according to one or more aspects of the present disclosure. In some examples, the LNA control configuration 400 may be implemented by aspects of the wireless communication system 100 or 200 as described with reference to Figure 1 and Figure 2 or may implement aspects of the wireless communication system 100 or 200 as described with reference to Figure 1 and Figure 2 In some examples, Figure 4A and Figure 4B The configurations illustrated in may be used by a transmitting device (e.g., a UE) that supports concurrent communications on multiple SIMs (e.g., with one or more cellular networks or WLANs) such as Figures 3A to 3Cimplemented with the receive chain configurations illustrated herein, as described herein. The LNA control configuration can be implemented by a UE or its components as described herein, or can be performed by a modem, chipset, and / or communication manager as discussed herein. In some examples, the UE or an associated component can execute an instruction set to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE can use dedicated hardware to perform aspects of the described functions.

[0085] In Figure 4A an example, a first LNA control configuration 400-a can provide eLNA 420-a splitting, where the amplified signal from eLNA 420-a is split for a first RF chain 410-a associated with a first SIM and a second RF chain 415-a associated with a second SIM. In this example, the first RF chain can include an iLNA 425-a, a mixer 430-a, and a BBF 435-a, each associated with the first SIM. Similarly, the second RF chain can include an iLNA 425-b, a mixer 430-b, and a BBF 435-b, each associated with the second SIM. As discussed herein, the components of RF chains 410-a and 415-a can be implemented in a radio component 405-a (e.g., the radio portion of a wireless modem chip or chipset, which can provide SDR). In this example, the first SIM can have control over setting the automatic gain control (AGC) settings for eLNA 420-a, as well as control over setting AGC and parameters for other RF components of the first RF chain 410-a. The second SIM can have control over setting AGC for iLNA 425-b and setting parameters for other components of the second RF chain 415-a (e.g., BBF 435-b). In some cases, the SIM with the stronger RSSI measurement can be set as the first SIM such that the AGC settings for eLNA 420-a are not saturated for the first SIM. In other cases, the SIM with higher priority communication can be set as the first SIM.

[0086] In Figure 4BIn the example of [[ID=]], a separate iLNA may not be available for an antenna port associated with a received signal, and the second LNA control configuration 400-b may provide iLNA 455 splitting, where the amplified signal from iLNA 455 is split for a first RF chain 410-b associated with a first SIM and a second RF chain 415-b associated with a second SIM. In this example, there may be an eLNA 420-b, and the first RF chain 410-b may include an iLNA 455, a mixer 430-c, and a BBF 435-c, each associated with the first SIM. Similarly, the second RF chain may include a mixer 430-d and a BBF 435-d, each associated with the second SIM. As discussed herein, the components of RF chains 410-b and 415-b may be implemented in a radio component 405-b (e.g., the radio portion of a wireless modem chip or chipset that may provide SDR). In this example, the first SIM may have control over setting an automatic gain control (AGC) setting for the eLNA 420-b, as well as control over setting AGC for the iLNA 455 and parameters for other RF components of the first RF chain 410-b. The second SIM may have control over setting parameters for other components of the second RF chain 415-a (e.g., the BBF 435-d). In some cases, the SIM with a stronger RSSI measurement may be set as the first SIM such that the AGC setting of the eLNA 420-b is not saturated for the first SIM. In other cases, the SIM with a higher priority communication may be set as the first SIM.

[0087] In some cases, iLNA to eLNA splitting, such as illustrated in the first LNA control configuration 400-a, may provide enhanced performance due to different gain control and dynamic tuning ranges. For example, the eLNA 420 may provide a range of >20 dB, and the iLNAs 425 and 455 may provide a range of 6 dB. In some cases, if the signal strength increment between the SUBs is relatively large, the weaker SIM may require a higher gain tuning range that the iLNAs 425 and 455 may not be able to provide. In one example, a SIM with a 30 dB imbalance using the first LNA control configuration 400-a may use the splitting at the eLNA 420-a and have a better peak signal-to-noise ratio (SNR) of 6 dB, and in the case of a 10 dB imbalance, the peak SNR increment may decrease to approximately 3 dB. In the case of a relatively low imbalance (e.g., 0 dB), the iLNA splitting may provide approximately the same peak SNR as the eLNA (or even slightly better due to the noise figure loss in the eLNA splitting). Thus, in some examples, different LNA configuration fallback modes may be selected based on the difference or imbalance in signal strength of each SIM. Examples of such fallback modes are in Figure 5and Figure 6 is illustrated in

[0088] Figure 5 An example of fallback mode 500 is illustrated that supports techniques for configuring an LNA for a DSDA user equipment according to one or more aspects of the present disclosure. In some examples, fallback mode 500 may be implemented by aspects of wireless communication system 100 or 200 as described with reference to Figure 1 and Figure 2 or may be implemented by aspects of wireless communication system 100 or 200 as described with reference to Figure 1 and Figure 2 In some examples, Figure 5 the fallback mode illustrated in Figures 3A to 3C and Figure 4A and Figure 4B may be implemented by a transmitting device (e.g., UE) that supports concurrent communication on multiple SIMs (e.g., with one or more cellular networks or WLAN) using a receive chain configuration such as that illustrated in

[0089] In Figure 5 the example, default mode 505 may specify that each of the first SIM (SIM-1) and the second SIM (SIM-2) uses each available receive antenna port and the associated RF path (Rx0 to Rx3) of the shared RF component associated with each antenna port, where the SIM with the stronger signal strength controls the AGC setting (e.g., SIM-2 controls ACG in this example). Such a default mode 505 may be used when the imbalance in signal strength between the SIMs is relatively low (e.g., <10 dB). In this example, the first fallback mode 510 (fallback mode 1) may specify that the first SIM (SIM-1) controls the AGC setting associated with the first subset of antenna ports and the associated RF path (e.g., Rx1 and Rx3), and the second SIM (SIM-2) controls the AGC setting associated with the second subset of antenna ports and the associated RF path (e.g., Rx0 and Rx2). In the first fallback mode 510, each RF path may be active for each SIM.

[0090] Continue Figure 5For an example, the second fallback mode 515 (fallback mode 2) may specify the AGC for each SIM to control different subsets of antenna ports and the associated RF paths, and one or both SIMs may deactivate one or more RF paths. In a first example of the second fallback mode 515-a, the first SIM (SIM-1) controls the AGC settings associated with the first subset of antenna ports and the associated RF paths (e.g., Rx1 and Rx3), and the second SIM (SIM-2) controls the AGC settings associated with the second subset of antenna ports and the associated RF paths (e.g., Rx0 and Rx2). In the first example of the second fallback mode 515-a, each RF path may be active for the first SIM, and the non-controlled RF paths for the second SIM may be deactivated or blanked by the second SIM. In a second example of the second fallback mode 515-b, each SIM may deactivate or blank the non-controlled RF paths.

[0091] According to various aspects, the UE may use a mode such as Figure 5 one of the modes illustrated in to select the LNA configuration, where the LNA (e.g., iLNA and / or eLNA) may be split or shared between SIMs based on the available hardware configuration that supports split or shared LNA (eLNA and / or iLNA) and a fallback algorithm. In some cases, in the default shared LNA mode illustrated in a default mode 505, the SIM with the stronger received signal (e.g., Figure 5 SIM-2 in the example of, which has a higher RSSI value than SIM-1 for one or more measurement reference signals) drives the LNA. Such techniques may enhance the total throughput when the risk of LNA saturation is relatively low. In some cases, when the default mode 505 is selected, the SNR of each SIM may be thermally dominant, and reciprocal mixing may be used at a low offset of the RSSI at each SIM.

[0092] In other cases, a fallback mode may be selected in which the SIM with the weaker received signal (e.g., Figure 5In the example of SIM-1 in the example, which has a lower RSSI value than SIM-1 for one or more measurement reference signals, it can drive at least a subset of the LNAs. In this example, the first fallback mode 510 can specify that the AGC control on two RF paths (Rx1 and Rx3) is driven by the SIM with the weaker received signal (e.g., SIM-2), and both SIMs can continue to use all RF paths for receive processing. For one or more RF paths of the subset of LNAs controlled by the weaker SIM (e.g., SIM-2), such techniques can lead to saturation at one or more ADCs associated with the stronger SIM (e.g., SIM-1). In some cases, when the RSSI difference between the SIMs exceeds a first threshold (e.g., the RSSI difference is greater than 10 dB), the first fallback mode 510 can be used. Using such a fallback mode can provide, for example, approximately 10 dB of fallback SNR for the first SIM due to lower thermal levels, and can lead to saturation of the ADC associated with the second SIM when the received signal power is greater than -46 dBm. If the SNR of the second SIM is 35 dB or greater, then this technique may also pose a risk of saturation of the ADC associated with the second SIM.

[0093] In the second fallback mode 515, the SIM with the weaker signal can drive at least a subset of the LNAs (e.g., the LNAs associated with Rx1 and Rx3), and the SIM with the stronger signal can blank the baseband signals of each RF path (e.g., Rx1 and Rx3) associated with the subset of the LNAs. For example, in a first example of the second fallback mode 515-a, the stronger SIM can perform RF level detuning for the RF paths associated with the subset of the LNAs controlled by the weaker SIM. In some cases, when the fallback algorithm operates according to the second fallback mode 515 based on the RSSI increment between the SIMs, one or more RSSI measurements of the stronger SIM may be frozen. In other examples, such as a second example of the second fallback mode 515-b, both SIMs can blank the baseband signals of each RF path not controlled by that SIM. Such techniques can avoid saturation of the RF paths of the stronger SIM and reduce interference in the RF paths of the weaker SIM. In some cases, when the RSSI difference between the SIMs exceeds a second threshold (e.g., for the first or second example of the second fallback mode, the RSSI difference is greater than 30 dB or 35 dB), the second fallback mode 515 can be used. In some cases, based on the RSSI difference threshold, it can be used after transitioning to the first fallback mode 510 or can directly enter the second fallback mode 515 from the default mode 505. Thus, in some cases, the UE can transmit between different LNA configuration modes, and Figure 6 Examples of the LNA configuration mode states and transitions between different states are illustrated.

[0094] Figure 6 FIG. 600 is an example of a state diagram illustrating a fallback mode that supports techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. In some examples, state diagram 600 may be implemented by aspects of wireless communication system 100 or 200 as described with reference to Figure 1 and Figure 2 or may implement aspects of wireless communication system 100 or 200 as described with reference to Figure 1 and Figure 2 . In some examples, Figure 6 the state diagram 600 and fallback mode illustrated in may be used by a transmitting device (e.g., a UE) that supports concurrent communication on multiple SIMs (e.g., with one or more cellular networks or WLANs) using receive chain configurations such as Figures 3A to 3C and Figure 4A and Figure 4B illustrated in, as described herein. State diagram 600 may be implemented by a UE or its components as described herein, or may be performed by a modem, chipset, and / or communication manager as discussed herein. In some examples, the UE or associated components may execute an instruction set to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0095] In the example of Figure 6 , different states may be associated with a default mode 605, a first fallback mode 610, and a second fallback mode 615. Based on the difference in received signal strength (e.g., RSSI) at each SIM, the UE may transition between different states. For example, the UE may perform a transition 620 from the default mode 605 to the first fallback mode 610 at time T1 655 based on the RSSI increment 650 between SIMs exceeding a first threshold (e.g., 10 dB). In the case where the RSSI increment 650 drops below the first threshold or below an offset associated with the first threshold, the UE may perform a transition 625 to the default mode 605. When operating in the first fallback mode 610, the UE may perform a transition 630 from the first fallback mode 610 to the second fallback mode 615 at time T2 660 based on the RSSI increment 650 exceeding a second threshold (e.g., 30 dB). In the case where the RSSI increment 650 drops below the second threshold (or an offset associated with the second threshold) and remains above the first threshold, the UE may perform a transition 635 to the first fallback mode 610. Additionally, based on the RSSI increment 650, the UE may perform a transition 640 directly from the default mode 605 to the second fallback mode 615, or perform a transition 645 directly from the second fallback mode 615 to the default mode 605.

[0096] In some cases, one or more state transition rules can be defined for switching LNA configuration techniques. For example, the transition between the default mode 605 and the first fallback mode 610 can be defined in the RF software, and the transition between the default mode 605 and the second fallback mode 615 or between the first fallback mode 610 and the second fallback mode 615 can be defined in the RF software and in the interface between the radio component and one or more external components. When operating in one of the fallback modes, the UE can perform antenna allocation based on one or more rules. In some cases, when operating in the first fallback mode 610, antenna allocation and RF path AGC control for the antenna path with the highest RSSI increment can be provided to the lower service priority SIM. In addition, RF path AGC control for the remaining antenna paths can be provided to the higher service priority SIM. For the second fallback mode 615, for each antenna chain, the path corresponding to the lower RSSI increment SIM can be allocated to the higher priority service SIM. In addition, for each antenna path, the path associated with the higher RSSI increment SIM can be allocated to the lower service priority SIM. In some cases, when operating in the fallback mode, the UE may not change the receive RF path allocation until it exits the fallback mode and resumes the default mode 605 (e.g., even when the priority of each SIM changes).

[0097] As discussed herein, the LNA configuration can be selected based on the signal strength of different SIMs using DSDA operation. In some cases, due to the relatively small signal margin before the BBF, the SIM with the stronger signal may cause a risk of saturation in the RF path, and the associated AGC can prevent saturation at the associated ADC without visibility to the upstream BBF. In such cases, without RF saturation, the first fallback mode 610 can provide higher baseband throughput, however, operation in such a mode may reduce the flexibility of antenna switching diversity (AsDIV), and the UE may be more vulnerable to call drops, for example, due to hand blocking. In some cases, in the RF path, BBF gain adjustment can be used to split the iLNA configuration, and a wide adjustment range (e.g., greater than 6 dB) can incur insertion loss.

[0098] In some cases, different SIMs may coordinate the physical-to-logical antenna mapping. For example, the SIMs may coordinate to map the SIM with a higher service priority to the RF path and the associated antenna with a smaller imbalance between the SIMs. Additionally or alternatively, the SIMs may coordinate to map the SIM with a lower service priority to the RF path and the associated antenna with a larger imbalance. In some cases, the AsDIV switching may use the same mapping (e.g., AsDIV is evaluated every 640 ms (although the antenna receive diversity switching can be 20 ms), and AsDIV may update the mapped RF path and antenna). In some cases, the fallback mode may not interrupt, override, or affect the AsDIV operation. When the antenna and the associated RF path are turned off or blanked by the SIM, the transmission of one or more sounding reference signals (SRS) may be suspended. The service priority may be determined based on the information provided by the communication manager. In some cases, when a connection is established, the combined AGC leverage may be used for the entire process, where two SIMs are typically scouted together, and the total RSSI may be determined based on the RSSI of each SIM. In some cases, the communication timing of each SIM may be synchronized, and the timing may be driven by the SIM with a higher service priority.

[0099] In some cases, when using a hybrid LNA sharing configuration, in some frequency band combinations, the receive chain AGC may consider different AGC determination methods for separate subsets of the RF path. For example, a first subset of the RF path (e.g., Rx0, Rx1) may be driven by separate LNAs in different SIMs, and a second subset of the RF path (e.g., Rx2, Rx3) may be driven by the same shared LNA for different SIMs, and the AGC control may consider the specific LNA configuration. In some cases, sensitivity reduction and blanking schemes for timing drift protection may be exploited across SIMs in different fallback modes.

[0100] In some cases, different SIMs may enter and exit the sleep mode based on specific configurations associated with the SIMs. In some cases, if one SIM enters the sleep mode, another SIM may assume control of the LNA controlled by the SIM entering the sleep mode (during which time, the hysteresis buffer associated with the SIM in the sleep mode may be frozen). In some cases, when operating in the fallback mode, timing drift and TDD configuration mismatches (e.g., coexistence protection) may be considered. In some cases, the risk of hardware (e.g., LNA) damage may be reduced by receive / send blanking on the SIM (e.g., to prevent damage due to TDD configuration mismatch). In some cases, TDD configuration mismatch detection or override may not be implemented in DSDA operation, and the maximum transmit power limit (MTPL) fallback may be temporary. In some cases, the SIM may reduce the ADC set point based on the frequency offset relative to the stronger SIM (e.g., due to inability to detect saturation after the BBF), and the set point control may be set based on the ADC bias parameter set for the UE.

[0101] Thus, according to various aspects discussed herein, the UE may enter the fallback mode based on the received signal imbalance condition between the SIMs. In some cases, the imbalance condition may be based on the configured maximum RSSI increment which is the difference between the maximum RSSIs among the RF paths for each SIM. If the maximum RSSI increment is greater than a configurable low threshold or first threshold (e.g., 10 dB), then the condition 1 flag may be set. If the maximum RSSI increment is greater than a configurable high threshold or second threshold (e.g., 20 dB), then the condition 2 flag may be set. Based on the imbalance condition, the UE may enter the fallback process. In some cases, the fallback process may be entered based on a sliding window hysteresis conditioned on the flag input. A FIFO buffer may be defined which accumulates instances satisfying condition 1 and condition 2 over the window length, and if the entry condition 1 is satisfied l times during the duration of m time slots, the UE may enter the fallback mode 1. If the entry condition 2 is satisfied l times during the duration of m time slots, the UE may enter the fallback mode 2 (e.g., l = 8 and m = 16).

[0102] In some cases, to exit the fallback mode (e.g., return to the default mode), the UE may detect a balance condition. For example, the UE may use the measurement difference in the RF path (e.g., Rx0 / Rx1 RSSI measurements can be used to estimate the imbalance on Rx2 / Rx3, and vice versa). If the maximum RSSI increment is less than a configurable value (e.g., 6 dB), the UE may set an exit condition. In some cases, the fallback exit process may use a sliding window hysteresis on the exit condition. For example, a FIFO buffer may be defined and instances that meet the exit condition are accumulated over the window length. If the exit condition is met n times during a duration of m time slots, the UE may exit the fallback mode (e.g., switch back to the iLNA shared by all RF paths, such as by using n = 16 and m = 32).

[0103] Figure 7 FIG. 700 is a block diagram of an apparatus 705 illustrating techniques supporting the configuration of an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. Apparatus 705 may be an example of aspects of UE 115 as described herein. Apparatus 705 may include a receiver 710, a transmitter 715, and a communication manager 720. Apparatus 705 may also include a processor. Each of these components may communicate with one another (e.g., via one or more buses).

[0104] The 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 techniques for configuring an LNA for a DSDA user equipment). The information may be passed to other components of apparatus 705. The receiver 710 may utilize a single antenna or an array of multiple antennas.

[0105] The transmitter 715 may provide components for transmitting signals generated by other components of apparatus 705. For example, the transmitter 715 may transmit 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 techniques for configuring an LNA for a DSDA user equipment). In some examples, the transmitter 715 may be co-located with the receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or an array of multiple antennas.

[0106] The communication manager 720, the receiver 710, the transmitter 715, or various combinations thereof or their various components may be examples of components for performing various aspects of the techniques for configuring an LNA for a DSDA user equipment as described herein. For example, the communication manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may support methods for performing one or more of the functions described herein.

[0107] In some examples, the communication manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may include a processor, a digital signal processor (DSP), a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof that is configured to or otherwise supports components for performing the functions described in this disclosure. In some examples, the processor and the memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by the processor executing instructions stored in the memory).

[0108] Additionally or alternatively, in some examples, the communication manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in code executed by a processor (e.g., implemented as communication management software or firmware). If implemented in code executed by a processor, the functions of the communication manager 720, the receiver 710, the transmitter 715, 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 that is configured to or otherwise supports components for performing the functions described in this disclosure.

[0109] In some examples, the communication manager 720 may be configured to use or otherwise cooperate with the receiver 710, the transmitter 715, or both to perform various operations (e.g., receive, obtain, monitor, output, transmit). For example, the communication manager 720 may receive information from the receiver 710, convey information to the transmitter 715, or integrate in combination with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.

[0110] According to examples as disclosed herein, the communication manager 720 may support wireless communication at a UE. For example, the communication manager 720 may be configured as or otherwise support components for establishing a first communication link using a first SIM of the UE via two or more antenna ports in a DSDA mode. The communication manager 720 may be configured as or otherwise support components for establishing a second communication link using a second SIM of the UE via two or more antenna ports in a DSDA mode, the DSDA mode for receiving concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM. The communication manager 720 may be configured as or otherwise support components for identifying, based on activation of the DSDA mode, an LNA configuration for receiving each of the first communication and the second communication from two or more available LNA configurations, the identification based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication. The communication manager 720 may be configured as or otherwise support components for receiving the first communication and the second communication via two or more antenna ports based on the identified LNA configuration.

[0111] By including or configuring a communication manager 720 according to examples as described herein, a device 705 (e.g., a processor that controls or is otherwise coupled to a receiver 710, a transmitter 715, the communication manager 720, or a combination thereof) may support techniques for LNA configuration in DSDA operation, where different SIMs have different received signal strengths. Such techniques may provide efficient communication at the UE based on the signal strength differences of the SIMs, which may allow the UE to set gain control for different SIMs based on the current conditions at each SIM. Such techniques may thus enhance UE efficiency, increase data rates, enhance reliability at each SIM, and provide an enhanced user experience.

[0112] Figure 8 Block diagram 800 illustrates a device 805 that supports techniques for configuring an LNA for a DSDA user equipment according to one or more aspects of the present disclosure. The device 805 may be an example of aspects of a device 705 or a UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communication manager 820. The device 805 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0113] The receiver 810 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 techniques for configuring an LNA for DSDA user equipment). The information may be passed to other components of the device 805. The receiver 810 may utilize a single antenna or an array of multiple antennas.

[0114] The transmitter 815 may provide components for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit 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 techniques for configuring an LNA for DSDA user equipment). In some examples, the transmitter 815 may be co-located with the receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or an array of multiple antennas.

[0115] The device 805 or its various components may be examples of components for performing various aspects of the techniques for configuring an LNA for DSDA user equipment as described herein. For example, the communication manager 820 may include a DSDA manager 825, an LNA configuration manager 830, a DL communication manager 835, or any combination thereof. The communication manager 820 may be an example of aspects of the communication manager 720 as described herein. In some examples, the communication manager 820 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise in cooperation with the receiver 810, the transmitter 815, or both. For example, the communication manager 820 may receive information from the receiver 810, convey information to the transmitter 815, or integrate in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.

[0116] According to an example as disclosed herein, the communication manager 820 may support wireless communication at a UE. The DSDA manager 825 may be configured as or otherwise support components for establishing a first communication link using a first SIM of the UE via two or more antenna ports in a DSDA mode. The DSDA manager 825 may be configured as or otherwise support components for establishing a second communication link using a second SIM of the UE via two or more antenna ports in a DSDA mode, the DSDA mode for receiving concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM. The LNA configuration manager 830 may be configured as or otherwise support components for identifying, based on activation of the DSDA mode, an LNA configuration for receiving each of the first communication and the second communication from two or more available LNA configurations, the identification based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication. The DL communication manager 835 may be configured as or otherwise support components for receiving the first communication and the second communication via two or more antenna ports based on the identified LNA configuration.

[0117] Figure 9 Block diagram 900 illustrates a communication manager 920 that supports techniques for configuring an LNA for a DSDA user equipment, according to one or more aspects of the present disclosure. The communication manager 920 may be an example of aspects of the communication manager 720, the communication manager 820, or both as described herein. The communication manager 920 or its various components may be examples of components for performing various aspects of the techniques for configuring an LNA for a DSDA user equipment as described herein. For example, the communication manager 920 may include a DSDA manager 925, an LNA configuration manager 930, a DL communication manager 935, a signal measurement manager 940, a configuration selection manager 945, a receive chain manager 950, an AGC manager 955, a fallback state manager 960, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0118] According to examples disclosed herein, the communication manager 920 may support wireless communication at the UE. The DSDA manager 925 may be configured as or otherwise support components for establishing a first communication link using the first SIM of the UE via two or more antenna ports in the DSDA mode. In some examples, the DSDA manager 925 may be configured as or otherwise support components for establishing a second communication link using the second SIM of the UE via two or more antenna ports in the DSDA mode, which is used to receive concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, and the concurrent communications include a first communication using the first SIM and a second communication using the second SIM. The LNA configuration manager 930 may be configured as or otherwise support components for identifying an LNA configuration for receiving each of the first communication and the second communication from two or more available LNA configurations based on the activation of the DSDA mode, and the identification is based on the difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication. The DL communication manager 935 may be configured as or otherwise support components for receiving the first communication and the second communication via two or more antenna ports based on the identified LNA configuration.

[0119] In some examples, to support identifying the LNA configuration, the signal measurement manager 940 may be configured as or otherwise support components for measuring a first received signal strength associated with the first communication and a second received signal strength associated with the second communication to determine the difference between the first received signal strength and the second received signal strength. In some examples, to support identifying the LNA configuration, the configuration selection manager 945 may be configured as or otherwise support components for selecting a first LNA configuration in response to the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, and in the components of the first LNA configuration, each of the first SIM and the second SIM uses each LNA in a set of multiple LNAs associated with a set of antenna ports for receiving both the first communication and the second communication. In some examples, to support identifying the LNA configuration, the configuration selection manager 945 may be configured as or otherwise support components for selecting a second LNA configuration in response to the difference between the first received signal strength and the second received signal strength exceeding the first threshold, and in the second LNA configuration, the first SIM controls a first subset of LNAs associated with a first subset of the set of antenna ports, and the second SIM controls a second subset of LNAs associated with a second subset of the set of antenna ports.

[0120] In some examples, a first subset of LNAs and a second subset of LNAs are determined based on the magnitude of the difference between a first received signal strength and a second received signal strength. In some examples, a first SIM controls the gain of each LNA in a set of multiple LNAs in a first LNA configuration. In some examples, in a second LNA configuration, the first SIM controls the gain of each LNA in the first subset of LNAs, and the second SIM controls the gain of each LNA in the second subset of LNAs.

[0121] In some examples, when the second LNA configuration is selected, the first SIM receives a first communication using signals from each antenna port in a first subset of antenna ports and a second subset of antenna ports. In some examples, when the second LNA configuration is selected, the first SIM does not use any antenna port in the second subset of antenna ports to receive the first communication.

[0122] In some examples, when the second LNA configuration is selected, the first SIM does not use any antenna port in the second subset of antenna ports to receive the first communication, and when the second LNA configuration is selected, the second SIM does not use any antenna port in the first subset of antenna ports to receive a second communication. In some examples, the identified LNA configuration provides control of a set of multiple LNAs at the UE, the set of multiple LNAs including two or more internal LNAs inside the UE's wireless modem and two or more external LNAs outside the UE's wireless modem.

[0123] In some examples, the radio frequency signals from each of two or more external LNAs are split and provided to a respective first internal LNA associated with the first SIM and a respective second internal LNA associated with the second SIM. In some examples, the radio frequency signals from each of two or more external LNAs are provided to an associated internal LNA, and the output from each of two or more internal LNAs is split and provided to separate processing chains associated with the first SIM and the second SIM. In some examples, the first SIM controls the automatic gain control for at least a first subset of the set of multiple LNAs, and the second SIM controls the automatic gain control for at least a second subset of the set of multiple LNAs, and wherein the timing for updating the automatic gain control is based on which of the first SIM or the second SIM controls the associated LNA.

[0124] In some examples, to support identifying an LNA configuration, the signal measurement manager 940 may be configured as or otherwise support a component for determining that a difference between a first received signal strength associated with a first communication and a second received signal strength associated with a second communication exceeds a threshold. In some examples, to support identifying an LNA configuration, the AGC manager 955 may be configured as or otherwise support a component for selecting an LNA configuration in response to that determination, in which a first SIM controls at least one of two or more internal LNAs and at least one of two or more external LNAs, and in which a second SIM controls at least one of two or more internal LNAs. In some examples, the threshold is based on a gain control or dynamic tuning range of two or more internal LNAs.

[0125] In some examples, the DL communication manager 935 may be configured as or otherwise support a component for determining that a first SIM has a higher priority than a second SIM. In some examples, the receive chain manager 950 may be configured as or otherwise support a component for mapping a first subset of two or more antenna ports to the first SIM based on the higher priority of the first SIM, and wherein the LNA configuration is based on that mapping.

[0126] In some examples, to support reception, the DL communication manager 935 may be configured as or otherwise support a component for setting one or more analog-to-digital converter (ADC) parameters for a first communication based on a frequency offset between the first communication and a second communication when the first communication has a stronger signal strength than the second communication.

[0127] In some examples, the identification includes: identifying a first LNA configuration based on a difference between a first received signal strength and a second received signal strength being less than or equal to a first threshold. In some examples, the signal measurement manager 940 may be configured as or otherwise support a component for determining that a difference between the first received signal strength and the second received signal strength exceeds the first threshold after identifying the first LNA configuration. In some examples, the identification includes: identifying a first LNA configuration based on a difference between a first received signal strength and a second received signal strength being less than or equal to a first threshold, the first LNA configuration specifying that each SIM uses each antenna port. In some examples, the selection manager 945 may be configured as or otherwise support a component for selecting a second LNA configuration in response to that determination, wherein the second LNA configuration specifies that a first SIM controls a first subset of LNAs associated with a first subset of two or more antenna ports, and a second SIM controls a second subset of LNAs associated with a second subset of two or more antenna ports.

[0128] In some examples, the identification includes: identifying a first LNA configuration based on a difference between a first received signal strength and a second received signal strength being less than or equal to a first threshold, the first LNA configuration specifying that each SIM uses each antenna port. In some examples, the receive chain manager 950 may be configured as or otherwise support a component for receiving a first communication using a first subset of LNAs via a first subset of antenna ports. In some examples, the identification includes: identifying a first LNA configuration based on a difference between a first received signal strength and a second received signal strength being less than or equal to a first threshold, the first LNA configuration specifying that each SIM uses each antenna port. In some examples, the receive chain manager 950 may be configured as or otherwise support a component for receiving a second communication using a second subset of LNAs via a second subset of antenna ports.

[0129] In some examples, the difference between the first received signal strength and the second received signal strength is determined based on a filtered received signal strength indicator (RSSI) in a sliding window, the filtered RSSI being associated with the first communication and the second communication. In some examples, to support the determination, the signal measurement manager 940 may be configured as or otherwise support a component for determining that the difference between the first received signal strength and the second received signal strength exceeds the first threshold a predetermined number of times within a predetermined period.

[0130] In some examples, the signal measurement manager 940 may be configured as or otherwise support a component for determining that the difference between the first received signal strength and the second received signal strength is less than or equal to a second threshold after a second LNA configuration is selected. In some examples, the configuration selection manager 945 may be configured as or otherwise support a component for selecting the first LNA configuration in response to determining that the difference between the first received signal strength and the second received signal strength is less than or equal to the second threshold. In some examples, the DL communication manager 935 may be configured as or otherwise support a component for receiving the first communication and the second communication via two or more antenna ports based on the first LNA configuration. In some examples, the second threshold is less than the first threshold.

[0131] In some examples, during a period when the first SIM is not in a sleep mode, the first SIM controls a set of multiple LNAs in the first LNA configuration, and during a period when the first SIM is in a sleep mode, the second SIM controls the set of multiple LNAs in the first LNA configuration. In some examples, the first SIM pauses communication during one or more time slots based on a timing drift associated with the first communication or a TDD configuration mismatch between the first communication and the second communication.

[0132] In some examples, based on a difference between a first received signal strength and a second received signal strength being less than or equal to a first threshold, a first LNA configuration for receiving a first communication and a second communication among two or more available LNA configurations is identified, the first LNA configuration specifying that each SIM uses each antenna port and an associated LNA to receive the respective first communication and second communication. In some examples, when the first received signal strength exceeds the second received signal strength, a first SIM controls gain control for each of the associated LNAs among the associated LNAs.

[0133] In some examples, to support identification, the fallback state manager 960 may be configured as or otherwise support a component for identifying a first LNA configuration in response to the UE being in a first state, in which the difference between the first received signal strength and the second received signal strength is less than or equal to the first threshold, and each SIM uses each of two or more antenna ports for concurrent communication. In some examples, to support identification, the fallback state manager 960 may be configured as or otherwise support a component for identifying a second LNA configuration in response to the UE being in a second state, in which the difference between the first received signal strength and the second received signal strength exceeds the first threshold, the second LNA configuration specifying that the one of the first SIM or the second SIM having a lower service priority provides gain control for a first subset of two or more antenna ports having a relatively large received signal strength difference, and the other of the first SIM or the second SIM provides gain control for other antenna ports outside the first subset of two or more antenna ports. In some examples, to support identification, the fallback state manager 960 may be configured as or otherwise support a component for identifying a third LNA configuration in response to the UE being in a third state, in which the difference between the first received signal strength and the second received signal strength exceeds a second threshold greater than the first threshold, the third LNA configuration specifying that the one of the first SIM or the second SIM having a higher service priority uses only a first subset of two or more antenna ports having a relatively small received signal strength difference, and the other of the first SIM or the second SIM uses only one or more other antenna ports outside the first subset of two or more antenna ports.

[0134] Figure 10FIG. illustrates a system 1000 including an apparatus 1005 that supports techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. Apparatus 1005 may be an example of apparatus 705, apparatus 805, or UE 115 as described herein, or include components thereof. Apparatus 1005 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. Apparatus 1005 may include components for two-way voice and data communications, including components for sending and receiving communications, such as a communication manager 1020, an input / output (I / O) controller 1010, a transceiver 1015, an antenna 1025, a memory 1030, code 1035, and a processor 1040. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1045).

[0135] The I / O controller 1010 may manage input and output signals of the apparatus 1005. The I / O controller 1010 may also manage peripheral devices not integrated into the apparatus 1005. In some cases, the I / O controller 1010 may represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 1010 may utilize an operating system, such as or another known operating system. Additionally or alternatively, the I / O controller 1010 may represent, or interact with, a modem, a keyboard, a mouse, a touch screen, or similar device. In some cases, the I / O controller 1010 may be implemented as part of a processor (such as processor 1040). In some cases, a user may interact with the apparatus 1005 via the I / O controller 1010 or via hardware components controlled by the I / O controller 1010.

[0136] In some cases, device 1005 may include a single antenna 1025. However, in some other cases, device 1005 may have more than one antenna 1025, and the more than one antenna may be capable of concurrently transmitting or receiving multiple wireless transmissions. Transceiver 1015 may communicate bidirectionally via one or more antennas 1025, wired or wireless links, as described herein. For example, transceiver 1015 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 1015 may also include a modem that is configured to: modulate packets; provide the modulated packets to one or more antennas 1025 for transmission; and demodulate packets received from one or more antennas 1025. Transceiver 1015 or transceiver 1015 and one or more antennas 1025 may be examples of transmitter 715, transmitter 815, receiver 710, receiver 810, or any combination thereof or components thereof, as described herein.

[0137] Memory 1030 may include random access memory (RAM) and read-only memory (ROM). Memory 1030 may store computer-readable, computer-executable code 1035 that includes instructions that, when executed by processor 1040, cause device 1005 to perform the various functions described herein. Code 1035 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 1035 may not be directly executable by processor 1040 but may (e.g., when compiled and executed) cause a computer to perform the functions described herein. In some cases, among other things, memory 1030 may also contain a basic input / output system (BIOS) that may control basic hardware or software operations, such as interactions with peripheral components or devices.

[0138] Processor 1040 may include intelligent hardware devices (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1040 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into processor 1040. Processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1030) to cause device 1005 to perform various functions (e.g., functions or tasks that support techniques for configuring an LNA for a DSDA user equipment). For example, device 1005 or components of device 1005 may include processor 1040 and memory 1030 coupled or coupled to processor 1040, and processor 1040 and memory 1030 are configured to perform the various functions described herein.

[0139] According to examples disclosed herein, communication manager 1020 may support wireless communication at a UE. For example, communication manager 1020 may be configured as or otherwise support components for establishing a first communication link using a first SIM of the UE via two or more antenna ports in a DSDA mode. Communication manager 1020 may be configured as or otherwise support components for establishing a second communication link using a second SIM of the UE via two or more antenna ports in a DSDA mode, where the DSDA mode is for receiving concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM. Communication manager 1020 may be configured as or otherwise support components for identifying, based on activation of the DSDA mode, an LNA configuration for receiving each of the first communication and the second communication from two or more available LNA configurations, the identification being based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication. Communication manager 1020 may be configured as or otherwise support components for receiving the first communication and the second communication via two or more antenna ports based on the identified LNA configuration.

[0140] By including or configuring communication manager 1020 according to examples described herein, device 1005 may support techniques for LNA configuration in DSDA operation, where different SIMs have different received signal strengths. Such techniques may provide efficient communication at the UE based on the signal strength difference of the SIMs, which may allow the UE to set gain control for different SIMs based on the current conditions at each SIM. Such techniques may thus enhance UE efficiency, increase data rate, enhance reliability at each SIM, and provide an enhanced user experience.

[0141] In some examples, communication manager 1020 may be configured to use or otherwise cooperate with transceiver 1015, one or more antennas 1025, or any combination thereof to perform various operations (e.g., receive, monitor, transmit). Although communication manager 1020 is illustrated as a separate component, in some examples, one or more functions described with reference to communication manager 1020 may be supported or performed by processor 1040, memory 1030, code 1035, or any combination thereof. For example, code 1035 may include instructions executable by processor 1040 to cause device 1005 to perform various aspects of the techniques for configuring an LNA for DSDA user equipment as described herein, or processor 1040 and memory 1030 may be otherwise configured to perform or support such operations.

[0142] Figure 11 FIG. 1100 is a flow chart illustrating a method 1100 for exemplifying techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. Operations of method 1100 may be implemented by a UE or components thereof as described herein. For example, operations of method 1100 may be performed by UE 115 as described with reference to Figures 1 to 10 In some examples, the UE may execute an instruction set to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0143] At 1105, the method may include: in DSDA mode, establishing a first communication link using a first SIM of the UE via two or more antenna ports. The operation of 1105 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation of 1105 may be performed by a DSDA manager 925 as described with reference to Figure 9 FIG.

[0144] At 1110, the method may include: in DSDA mode, establishing a second communication link using a second SIM of the UE via two or more antenna ports, the DSDA mode being for receiving concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM. The operation of 1110 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation of 1110 may be performed by a DSDA manager 925 as described with reference to Figure 9 FIG.

[0145] At 1115, the method may include: based on activation of the DSDA mode, identifying, from two or more available LNA configurations, an LNA configuration for receiving each of the first communication and the second communication, the identification being based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication. The operation of 1115 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation of 1115 may be performed by an LNA configuration manager 930 as described with reference to Figure 9 FIG.

[0146] At 1120, the method may include: receiving the first communication and the second communication via two or more antenna ports based on the identified LNA configuration. The operation of 1120 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation of 1120 may be performed by a DL communication manager 935 as described with reference to Figure 9 FIG.

[0147] Figure 12 FIG. 1200 is a flow chart illustrating a method 1200 for exemplifying techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. Operations of method 1200 may be implemented by a UE or components thereof as described herein. For example, operations of method 1200 may be performed by UE 115 as described with reference to Figures 1 to 10 Additional or alternatively, the UE may use dedicated hardware to perform aspects of the described functionality.

[0148] At 1205, the method may include: in DSDA mode, establishing a first communication link using a first SIM of the UE via two or more antenna ports. The operation of 1205 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation of 1205 may be performed by a DSDA manager 925 as described with reference to Figure 9 described.

[0149] At 1210, the method may include: in DSDA mode, establishing a second communication link using a second SIM of the UE via two or more antenna ports, the DSDA mode being for receiving concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM. The operation of 1210 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation of 1210 may be performed by a DSDA manager 925 as described with reference to Figure 9 described.

[0150] At 1215, the method may include: measuring a first received signal strength associated with the first communication and a second received signal strength associated with the second communication to determine a difference between the first received signal strength and the second received signal strength. The operation of 1215 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation of 1215 may be performed by a signal measurement manager 940 as described with reference to Figure 9 described.

[0151] At 1220, the method may include: in response to the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, selecting a first LNA configuration in which each of the first SIM and the second SIM uses each of a plurality of LNAs associated with a set of antenna ports for receiving both the first communication and the second communication; the operation of 1220 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation of 1220 may be performed by a DSDA manager 925 as described with reference to Figure 9Execute using the described configuration selection manager 945.

[0152] At 1225, the method may include: in response to a difference between a first received signal strength and a second received signal strength exceeding a first threshold, selecting a second LNA configuration in which a first SIM controls a first subset of LNAs associated with a first subset of an antenna port set, and a second SIM controls a second subset of LNAs associated with a second subset of the antenna port set. The operation at 1225 may be performed according to the examples disclosed herein. In some examples, aspects of the operation at 1225 may be performed by the configuration selection manager 945 as described with reference to Figure 9 Execute using the described configuration selection manager 945.

[0153] At 1230, the method may include: receiving a first communication and a second communication via two or more antenna ports based on the selected LNA configuration. The operation at 1230 may be performed according to the examples disclosed herein. In some examples, aspects of the operation at 1230 may be performed by the DL communication manager 935 as described with reference to Figure 9 Execute using the described DL communication manager 935.

[0154] Figure 13 FIG. 1300 is a flow chart of a method illustrating techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. The operations of method 1300 may be implemented by a UE or its components as described herein. For example, the operations of method 1300 may be performed by the UE 115 as described with reference to Figures 1 to 10 Execute using the described UE 115. In some examples, the UE may execute an instruction set to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0155] Figure 9 At 1305, the method may include: in DSDA mode, establishing a first communication link using a first SIM of the UE via two or more antenna ports. The operation at 1305 may be performed according to the examples disclosed herein. In some examples, aspects of the operation at 1305 may be performed by the DSDA manager 925 as described with reference to Execute using the described DSDA manager 925.

[0156] At 1310, the method may include: in DSDA mode, establishing a second communication link using a second SIM of the UE via two or more antenna ports, where the DSDA mode is for receiving concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, and the concurrent communications include a first communication using the first SIM and a second communication using the second SIM. The operation at 1310 may be performed according to the examples disclosed herein. In some examples, aspects of the operation at 1310 may be performed by the DSDA manager 925 as described with reference toFigure 9 be performed by the described DSDA manager 925.

[0157] At 1315, the method may include: determining that a difference between a first received signal strength associated with a first communication and a second received signal strength associated with a second communication exceeds a threshold. The operation at 1315 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation at 1315 may be performed by a signal measurement manager 940 as described with reference to Figure 9 the described signal measurement manager 940.

[0158] At 1320, the method may include: in response to the determination, selecting an LNA configuration in which a first SIM controls at least one of two or more internal LNAs and at least one of two or more external LNAs, and in which a second SIM controls at least one of two or more internal LNAs. The operation at 1320 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation at 1320 may be performed by an AGC manager 955 as described with reference to Figure 9 the described AGC manager 955. In some cases, the LNA configuration provides control of a set of multiple LNAs at the UE, the set of the multiple LNAs including two or more internal LNAs inside the UE's wireless modem and two or more external LNAs outside the UE's wireless modem.

[0159] At 1325, the method may include: receiving the first communication and the second communication via two or more antenna ports based on the identified LNA configuration. The operation at 1325 may be performed in accordance with examples disclosed herein. In some examples, aspects of the operation at 1325 may be performed by a DL communication manager 935 as described with reference to Figure 9 the described DL communication manager 935.

[0160] Figure 14 illustrates a flowchart of a method 1400 that exemplifies techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. Operations of method 1400 may be implemented by a UE or its components as described herein. For example, operations of method 1400 may be performed by a UE 115 as described with reference to Figures 1 to 10 the described UE 115. In some examples, the UE may execute an instruction set to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0161] At 1405, the method may include: in DSDA mode, establishing a first communication link using a first SIM of the UE via two or more antenna ports. The operation of 1405 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1405 may be performed by a DSDA manager 925 as described with reference to Figure 9 as described.

[0162] At 1410, the method may include: in DSDA mode, establishing a second communication link using a second SIM of the UE via two or more antenna ports, where the DSDA mode is for receiving concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, and the concurrent communications include a first communication using the first SIM and a second communication using the second SIM. The operation of 1410 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1410 may be performed by a DSDA manager 925 as described with reference to Figure 9 as described.

[0163] At 1415, the method may include: based on the activation of the DSDA mode, identifying an LNA configuration for receiving each of the first communication and the second communication from two or more available LNA configurations, where the identification is based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication. The operation of 1415 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1415 may be performed by an LNA configuration manager 930 as described with reference to Figure 9 as described.

[0164] At 1420, the method may include: determining that the first SIM has a higher priority than the second SIM. The operation of 1420 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1420 may be performed by a DL communication manager 935 as described with reference to Figure 9 as described.

[0165] At 1425, the method may include: based on the higher priority of the first SIM, mapping a first subset of two or more antenna ports to the first SIM, and where the LNA configuration is based on the mapping. The operation of 1425 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1425 may be performed by a receive chain manager 950 as described with reference to Figure 9 as described.

[0166] At 1430, the method may include: receiving a first communication and a second communication via two or more antenna ports based on the identified LNA configuration. The operations of 1430 may be performed in accordance with the examples disclosed herein. In some examples, aspects of the operations of 1430 may be performed by the DL communication manager 935 as described with reference to Figure 9 as described.

[0167] Figure 15 FIG. illustrates a flowchart of a method 1500 that exemplifies techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. The operations of method 1500 may be implemented by a UE or its components as described herein. For example, the operations of method 1500 may be performed by the UE 115 as described with reference to Figures 1 to 10 as described. In some examples, the UE may execute an instruction set to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0168] At 1505, the method may include: establishing a first communication link via two or more antenna ports using a first SIM of the UE in the DSDA mode. The operations of 1505 may be performed in accordance with the examples disclosed herein. In some examples, aspects of the operations of 1505 may be performed by the DSDA manager 925 as described with reference to Figure 9 as described.

[0169] At 1510, the method may include: establishing a second communication link via two or more antenna ports using a second SIM of the UE in the DSDA mode, the DSDA mode being for receiving concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM. The operations of 1510 may be performed in accordance with the examples disclosed herein. In some examples, aspects of the operations of 1510 may be performed by the DSDA manager 925 as described with reference to Figure 9 as described.

[0170] At 1515, the method may include: identifying, based on the activation of the DSDA mode, an LNA configuration for receiving each of the first communication and the second communication from two or more available LNA configurations, the identification being based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication. The operations of 1515 may be performed in accordance with the examples disclosed herein. In some examples, aspects of the operations of 1515 may be performed by the LNA configuration manager 930 as described with reference to Figure 9 as described.

[0171] At 1520, the method may include: when the first communication has a stronger signal strength than the second communication, setting one or more analog-to-digital converter (ADC) parameters for the first communication based on the frequency offset between the first communication and the second communication. The operation of 1520 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1520 may be performed by the DL communication manager 935 as described with reference to Figure 9 as described.

[0172] At 1525, the method may include: receiving the first communication and the second communication via two or more antenna ports based on the identified LNA configuration. The operation of 1525 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1525 may be performed by the DL communication manager 935 as described with reference to Figure 9 as described.

[0173] Figure 16 FIG. 1600 is a flowchart of a method illustrating techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. The operations of method 1600 may be implemented by a UE or components thereof as described herein. For example, the operations of method 1600 may be performed by the UE 115 as described with reference to Figures 1 to 10 as described. In some examples, the UE may execute an instruction set to control functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0174] At 1605, the method may include: in DSDA mode, establishing a first communication link via two or more antenna ports using a first SIM of the UE. The operation of 1605 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1605 may be performed by the DSDA manager 925 as described with reference to Figure 9 as described.

[0175] At 1610, the method may include: in DSDA mode, establishing a second communication link via two or more antenna ports using a second SIM of the UE, the DSDA mode being for receiving concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM. The operation of 1610 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1610 may be performed by the DSDA manager 925 as described with reference to Figure 9 as described.

[0176] At 1615, the method may include: identifying, based on activation of the DSDA mode, a first LNA configuration for receiving each of a first communication and a second communication from two or more available LNA configurations, the identification being based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication. Operations at 1615 may be performed in accordance with the examples disclosed herein. In some examples, aspects of the operations at 1615 may be performed by an LNA configuration manager 930 as described with reference to Figure 9 as described.

[0177] At 1620, the method may include: after identifying the first LNA configuration, determining that a difference between the first received signal strength and the second received signal strength exceeds a first threshold. Operations at 1620 may be performed in accordance with the examples disclosed herein. In some examples, aspects of the operations at 1620 may be performed by a signal measurement manager 940 as described with reference to Figure 9 as described.

[0178] At 1625, the method may include: in response to the determination, selecting a second LNA configuration, wherein the second LNA configuration provides for a first subset of LNAs associated with a first subset of two or more antenna ports to be controlled by a first SIM, and a second subset of LNAs associated with a second subset of two or more antenna ports to be controlled by a second SIM. Operations at 1625 may be performed in accordance with the examples disclosed herein. In some examples, aspects of the operations at 1625 may be performed by a configuration selection manager 945 as described with reference to Figure 9 as described.

[0179] At 1630, the method may include: receiving the first communication via the first subset of antenna ports using the first subset of LNAs. Operations at 1630 may be performed in accordance with the examples disclosed herein. In some examples, aspects of the operations at 1630 may be performed by a receive chain manager 950 as described with reference to Figure 9 as described.

[0180] At 1635, the method may include: receiving the second communication via the second subset of antenna ports using the second subset of LNAs. Operations at 1635 may be performed in accordance with the examples disclosed herein. In some examples, aspects of the operations at 1635 may be performed by a receive chain manager 950 as described with reference to Figure 9 as described.

[0181] Figure 17 FIG. illustrates a flowchart of a method 1700 that exemplifies techniques for configuring an LNA for a DSDA user equipment in accordance with one or more aspects of the present disclosure. Operations of method 1700 may be implemented by a UE or components thereof as described herein. For example, operations of method 1700 may be performed by an entity as described with reference toFigures 1 to 10 performed by the described UE 115. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0182] At 1705, the method may include: in DSDA mode, establishing a first communication link using a first SIM of the UE via two or more antenna ports. The operation of 1705 may be performed according to examples disclosed herein. In some examples, aspects of the operation of 1705 may be performed by a DSDA manager 925 as described in reference Figure 9 to the described DSDA manager 925.

[0183] At 1710, the method may include: in DSDA mode, establishing a second communication link using a second SIM of the UE via two or more antenna ports, where the DSDA mode is for receiving concurrent communications for at least the first SIM and the second SIM via two or more antenna ports of the UE, and the concurrent communications include a first communication using the first SIM and a second communication using the second SIM. The operation of 1710 may be performed according to examples disclosed herein. In some examples, aspects of the operation of 1710 may be performed by a DSDA manager 925 as described in reference Figure 9 to the described DSDA manager 925.

[0184] At 1715, the method may include: in response to the UE being in a first state, identifying a first LNA configuration, where in the first state, the difference between a first received signal strength and a second received signal strength is less than or equal to a first threshold, and each SIM uses each of the two or more antenna ports for concurrent communication. The operation of 1715 may be performed according to examples disclosed herein. In some examples, aspects of the operation of 1715 may be performed by a fallback state manager 960 as described in reference Figure 9 to the described fallback state manager 960.

[0185] At 1720, the method may include: in response to the UE being in a second state, identifying a second LNA configuration, where in the second state, the difference between the first received signal strength and the second received signal strength exceeds the first threshold, and the second LNA configuration specifies that the one of the first SIM or the second SIM with a lower service priority provides AGC for a first subset of the two or more antenna ports having a relatively large difference in received signal strength, and the other of the first SIM or the second SIM provides AGC for the other antenna ports outside the first subset of the two or more antenna ports. The operation of 1720 may be performed according to examples disclosed herein. In some examples, aspects of the operation of 1720 may be performed by a fallback state manager 960 as described in reference Figure 9 to the described fallback state manager 960.

[0186] At 1725, the method may include: in response to the UE being in a third state, identifying a third LNA configuration, in which the difference between a first received signal strength and a second received signal strength exceeds a second threshold greater than a first threshold, and the third LNA configuration specifies that the one of the first SIM or the second SIM having a higher service priority uses only a first subset of two or more antenna ports having a relatively small difference in received signal strength, and the other of the first SIM or the second SIM uses one or more other antenna ports outside the first subset of two or more antenna ports. The operations at 1725 may be performed according to examples disclosed herein. In some examples, aspects of the operations at 1725 may be performed by a fallback state manager 960 as described with reference to Figure 9 the fallback state manager 960 described above.

[0187] At 1730, the method may include: receiving a first communication and a second communication via two or more antenna ports based on the identified LNA configuration. The operations at 1730 may be performed according to examples disclosed herein. In some examples, aspects of the operations at 1730 may be performed by a DL communication manager 935 as described with reference to Figure 9 the DL communication manager 935 described above.

[0188] An overview of aspects of the present disclosure is provided below:

[0189] Aspect 1: A method for wireless communication at a UE, the method including: in a dual-subscriber dual-active mode, establishing a first communication link using a first SIM of the UE via two or more antenna ports; in the dual-subscriber dual-active mode, establishing a second communication link using a second SIM of the UE via the two or more antenna ports, the dual-subscriber dual-active mode being for receiving concurrent communications for at least the first SIM and the second SIM via the two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM; identifying, at least in part based on activation of the dual-subscriber dual-active mode, a low-noise amplifier configuration for receiving each of the first communication and the second communication from two or more available low-noise amplifier configurations, the identifying being at least in part based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication; and receiving the first communication and the second communication via the two or more antenna ports at least in part based on the identified low-noise amplifier configuration.

[0190] Aspect 2: The method according to Aspect 1, wherein identifying the low-noise amplifier configuration includes: measuring the first received signal strength associated with the first communication and the second received signal strength associated with the second communication to determine a difference between the first received signal strength and the second received signal strength; in response to the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, selecting a first low-noise amplifier configuration, in which each of the first SIM and the second SIM uses each low-noise amplifier among a plurality of low-noise amplifiers associated with an antenna port set for receiving both the first communication and the second communication; and in response to the difference between the first received signal strength and the second received signal strength exceeding the first threshold, selecting a second low-noise amplifier configuration, in which the first SIM controls a first subset of low-noise amplifiers associated with a first subset of the antenna port set, and the second SIM controls a second subset of low-noise amplifiers associated with a second subset of the antenna port set.

[0191] Aspect 3: The method according to Aspect 2, wherein the first subset of low-noise amplifiers and the second subset of low-noise amplifiers are determined at least in part based on a magnitude of the difference between the first received signal strength and the second received signal strength.

[0192] Aspect 4: The method according to any one of Aspects 2 to 3, wherein the first SIM controls a gain of each low-noise amplifier among the plurality of low-noise amplifiers in the first low-noise amplifier configuration.

[0193] Aspect 5: The method according to any one of Aspects 2 to 4, wherein in the second low-noise amplifier configuration, the first SIM controls a gain of each low-noise amplifier in the first subset of low-noise amplifiers, and the second SIM controls a gain of each low-noise amplifier in the second subset of low-noise amplifiers.

[0194] Aspect 6: The method according to any one of Aspects 2 to 5, wherein when the second low-noise amplifier configuration is selected, the first SIM uses signals from each antenna port in the first subset of antenna ports and the second subset of antenna ports to receive the first communication.

[0195] Aspect 7: The method according to any one of Aspects 2 to 5, wherein when the second low-noise amplifier configuration is selected, the first SIM does not use any antenna port in the second subset of antenna ports to receive the first communication.

[0196] Aspect 8: The method according to any one of Aspects 2 to 4, wherein when the second low-noise amplifier configuration is selected, the first SIM does not use any of the antenna ports in the second subset of antenna ports to receive the first communication, and when the second low-noise amplifier configuration is selected, the second SIM does not use any of the antenna ports in the first subset of antenna ports to receive the second communication.

[0197] Aspect 9: The method according to any one of Aspects 1 to 8, wherein the identified low-noise amplifier configuration provides control of a plurality of low-noise amplifiers at the UE, the plurality of low-noise amplifiers including two or more internal low-noise amplifiers within the wireless modem of the UE and two or more external low-noise amplifiers external to the wireless modem of the UE, and wherein the first communication link and the second communication link each include one or more component carriers.

[0198] Aspect 10: The method according to Aspect 9, wherein the radio frequency signals from each of the two or more external low-noise amplifiers are split and provided to a respective first internal low-noise amplifier associated with the first SIM and a respective second internal low-noise amplifier associated with the second SIM.

[0199] Aspect 11: The method according to Aspect 9, wherein the radio frequency signals from each of the two or more external low-noise amplifiers are provided to an associated internal low-noise amplifier, and the output from each of the two or more internal low-noise amplifiers is split and provided to separate processing chains associated with the first SIM and the second SIM.

[0200] Aspect 12: The method according to any one of Aspects 9 to 11, wherein the first SIM controls the automatic gain control for at least a first subset of the plurality of low-noise amplifiers, and the second SIM controls the automatic gain control for at least a second subset of the plurality of low-noise amplifiers, and wherein the timing for updating the automatic gain control is at least partially based on which one of the first SIM or the second SIM controls the associated low-noise amplifier.

[0201] Aspect 13: The method according to any one of aspects 9 to 12, wherein identifying the low-noise amplifier configuration includes: determining that a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication exceeds a threshold, and in response to the determining, selecting a low-noise amplifier configuration in which the first SIM controls at least one of the two or more internal low-noise amplifiers and at least one of the two or more external low-noise amplifiers, and in which the second SIM controls at least one of the two or more internal low-noise amplifiers.

[0202] Aspect 14: The method according to aspect 13, wherein the threshold is at least partially based on a gain control or dynamic tuning range of the two or more internal low-noise amplifiers.

[0203] Aspect 15: The method according to any one of aspects 1 to 14, the method further includes: determining that the first SIM has a higher priority than the second SIM; and mapping a first subset of the two or more antenna ports to the first SIM at least partially based on the higher priority of the first SIM, and wherein the low-noise amplifier configuration is at least partially based on the mapping.

[0204] Aspect 16: The method according to any one of aspects 1 to 15, wherein the receiving further includes: when the first communication has a stronger signal strength than the second communication, setting one or more analog-to-digital converter (ADC) parameters for the first communication at least partially based on a frequency offset between the first communication and the second communication.

[0205] Aspect 17: The method according to any one of Aspects 1 to 16, wherein the identification includes: identifying a first low-noise amplifier configuration based at least in part on the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, the first low-noise amplifier configuration specifying that each SIM uses each antenna port and an associated low-noise amplifier to receive a respective first communication and a second communication, and wherein the method further includes: after identifying the first low-noise amplifier configuration, determining that the difference between the first received signal strength and the second received signal strength exceeds the first threshold; in response to the determination, selecting a second low-noise amplifier configuration, wherein the second low-noise amplifier configuration specifies that the first SIM controls a first subset of low-noise amplifiers associated with a first subset of the two or more antenna ports, and the second SIM controls a second subset of low-noise amplifiers associated with a second subset of the two or more antenna ports; receiving the first communication via the first subset of antenna ports using the first subset of low-noise amplifiers; and receiving the second communication via the second subset of antenna ports using the second subset of low-noise amplifiers.

[0206] Aspect 18: The method according to Aspect 17, wherein the difference between the first received signal strength and the second received signal strength is determined based at least in part on a filtered received signal strength indicator (RSSI) in a sliding window, the filtered RSSI being associated with the first communication and the second communication.

[0207] Aspect 19: The method according to any one of Aspects 17 to 18, wherein the determination includes: determining that the difference between the first received signal strength and the second received signal strength exceeds the first threshold a predetermined number of times within a predetermined time period.

[0208] Aspect 20: The method according to any one of Aspects 17 to 19, the method further includes: after selecting the second low-noise amplifier configuration, determining that the difference between the first received signal strength and the second received signal strength is less than or equal to a second threshold; in response to determining that the difference between the first received signal strength and the second received signal strength is less than or equal to the second threshold, selecting the first low-noise amplifier configuration; and receiving the first communication and the second communication via the two or more antenna ports based at least in part on the first low-noise amplifier configuration.

[0209] Aspect 21: The method according to Aspect 20, wherein the second threshold is less than the first threshold.

[0210] Aspect 22: The method according to any one of aspects 17 to 21, wherein during a period when the first SIM is not in a sleep mode, the first SIM controls a plurality of low-noise amplifiers in the first low-noise amplifier configuration, and during a period when the first SIM is in the sleep mode, the second SIM controls the plurality of low-noise amplifiers in the first low-noise amplifier configuration.

[0211] Aspect 23: The method according to any one of aspects 17 to 22, wherein the first SIM pauses communication during one or more time slots at least partially based on a timing drift associated with the first communication or a TDD configuration mismatch between the first communication and the second communication.

[0212] Aspect 24: The method according to aspect 1, wherein a first low-noise amplifier configuration for receiving the first communication and the second communication in the two or more available low-noise amplifier configurations is identified at least partially based on the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, the first low-noise amplifier configuration specifying that each SIM uses each antenna port and an associated low-noise amplifier to receive a respective first communication and second communication, and wherein when the first received signal strength exceeds the second received signal strength, the first SIM controls the gain control for each associated low-noise amplifier in the associated low-noise amplifiers.

[0213] Aspect 25: The method according to aspect 1, wherein the identification includes: in response to the UE being in a first state, identifying a first low-noise amplifier configuration, in the first state, the difference between the first received signal strength and the second received signal strength is less than or equal to a first threshold, and each SIM uses each of the two or more antenna ports for the concurrent communication; in response to the UE being in a second state, identifying a second low-noise amplifier configuration, in the second state, the difference between the first received signal strength and the second received signal strength exceeds the first threshold, the second low-noise amplifier configuration stipulates that the one with the lower service priority among the first SIM or the second SIM provides gain control for a first subset of the two or more antenna ports having a relatively large received signal strength difference, and the other of the first SIM or the second SIM provides gain control for the other antenna ports outside the first subset of the two or more antenna ports; and in response to the UE being in a third state, identifying a third low-noise amplifier configuration, in the third state, the difference between the first received signal strength and the second received signal strength exceeds a second threshold greater than the first threshold, the third low-noise amplifier configuration stipulates that the one with the higher service priority among the first SIM or the second SIM only uses a first subset of the two or more antenna ports having a relatively small received signal strength difference, and the other of the first SIM or the second SIM only uses one or more other antenna ports outside the first subset of the two or more antenna ports.

[0214] Aspect 26: An apparatus for wireless communication at a UE, the apparatus includes a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to any one of aspects 1 to 25.

[0215] Aspect 27: An apparatus for wireless communication at a UE, the apparatus includes at least one component for performing the method according to any one of aspects 1 to 25.

[0216] Aspect 28: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code includes instructions executable by a processor to perform the method according to any one of aspects 1 to 25.

[0217] 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. In addition, aspects from two or more methods can be combined.

[0218] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in much of the description, the techniques described herein may also apply to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may apply to a variety of other wireless communication systems such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0219] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0220] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0221] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may 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 may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these items. The features implementing the functions may also be physically located at different positions, including being distributed such that portions of the functions are implemented at different physical locations.

[0222] A computer-readable medium includes both a non-transitory computer storage medium and a communication medium, where the communication medium includes any medium that facilitates transfer of a computer program from one location to another. The non-transitory storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc read-only memory (CD-ROM) or other optical disc storage, magnetic 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 that can be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. 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 the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. As used herein, disk and disc include CD, laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc. A disk can magnetically reproduce data, and a disc can optically reproduce data using lasers. Combinations of the above are also included within the scope of computer-readable medium.

[0223] As used herein (including in the claims), the "or" used in a list of items (e.g., a list of items accompanied by phrases such as "at least one of" or "one or more of") indicates an inclusive listing such that, for example, a listing of at least one of 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). Additionally, 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" can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0224] The term "determine" encompasses a variety of actions, and thus, "determine" can include operations such as calculating, computing, processing, deriving, researching, looking up (such as looking up in a table, database, or other data structure), ascertaining, and similar actions. Additionally, "determine" can include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Further, "determine" can include parsing, obtaining, selecting, choosing, establishing, and other such similar actions.

[0225] In the accompanying drawings, like components or features may have the same reference label. Additionally, various components of the same type can be distinguished by adding a dash and a second label used to differentiate between like components after the reference label. If only the first reference label is used in the specification, the description can apply to any of the like components having the same first reference label, regardless of the second reference label or any other subsequent reference labels.

[0226] The description set forth herein in connection with the accompanying drawings describes example configurations and does not represent all examples that may be implemented or that are within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration" and not "preferred" or "advantageous over other examples". The detailed description includes specific details for providing an understanding of the described techniques. However, the techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0227] The present description is provided to enable a person of ordinary skill in the art to make or use the present disclosure. Various modifications to the present disclosure will be readily apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a User Equipment (UE), the method comprising: In a dual-subscriber dual-active mode, establishing a first communication link using a first Subscriber Identity Module (SIM) of the UE via two or more antenna ports; In the dual-subscriber dual-active mode, establishing a second communication link using a second SIM of the UE via the two or more antenna ports, the dual-subscriber dual-active mode being for receiving concurrent communications for at least the first SIM and the second SIM via the two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM; Identifying a Low Noise Amplifier (LNA) configuration for receiving each of the first communication and the second communication from two or more available LNA configurations, at least partially based on an activation of the dual-subscriber dual-active mode, the identification being at least partially based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication; And Receiving the first communication and the second communication via the two or more antenna ports, at least partially based on the identified LNA configuration.

2. The method according to claim 1, wherein identifying the LNA configuration comprises: Measuring the first received signal strength associated with the first communication and the second received signal strength associated with the second communication to determine a difference between the first received signal strength and the second received signal strength; Responsive to the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, selecting a first LNA configuration in which each of the first SIM and the second SIM uses each of a plurality of LNAs associated with a set of antenna ports for receiving both the first communication and the second communication; And Responsive to the difference between the first received signal strength and the second received signal strength exceeding the first threshold, selecting a second LNA configuration in which the first SIM controls a first subset of LNAs associated with a first subset of the set of antenna ports, and the second SIM controls a second subset of LNAs associated with a second subset of the set of antenna ports.

3. The method according to claim 2, wherein the first subset of LNAs and the second subset of LNAs are determined at least partially based on a magnitude of the difference between the first received signal strength and the second received signal strength.

4. The method according to claim 2, wherein the first SIM controls a gain of each of the plurality of LNAs in the first LNA configuration.

5. The method according to claim 2, wherein in the second low-noise amplifier configuration, the first SIM controls the gain of each low-noise amplifier in the first subset of the first SIM-controlled low-noise amplifiers, and the second SIM controls the gain of each low-noise amplifier in the second subset of the second SIM-controlled low-noise amplifiers.

6. The method according to claim 2, wherein when the second low-noise amplifier configuration is selected, the first SIM receives the first communication using signals from each of the antenna ports in the first subset of antenna ports and the second subset of antenna ports from the antenna port.

7. The method according to claim 2, wherein when the second low-noise amplifier configuration is selected, the first SIM does not use any of the antenna ports in the second subset of antenna ports to receive the first communication.

8. The method according to claim 2, wherein when the second low-noise amplifier configuration is selected, the first SIM does not use any of the antenna ports in the second subset of antenna ports to receive the first communication, and when the second low-noise amplifier configuration is selected, the second SIM does not use any of the antenna ports in the first subset of antenna ports to receive the second communication.

9. The method according to claim 1, wherein the identified low-noise amplifier configuration provides control of a plurality of low-noise amplifiers at the UE, the plurality of low-noise amplifiers including two or more internal low-noise amplifiers inside the UE's wireless modem and two or more external low-noise amplifiers outside the UE's wireless modem, and wherein the first communication link and the second communication link each include one or more component carriers.

10. The method according to claim 9, wherein the radio frequency signals from each of the two or more external low-noise amplifiers are split and provided to a corresponding first internal low-noise amplifier associated with the first SIM and a corresponding second internal low-noise amplifier associated with the second SIM.

11. The method according to claim 9, wherein the radio frequency signals from each of the two or more external low-noise amplifiers are provided to an associated internal low-noise amplifier, and the output from each of the two or more internal low-noise amplifiers is split and provided to separate processing chains associated with the first SIM and the second SIM.

12. The method according to claim 9, wherein the first SIM controls the automatic gain control for at least a first subset of the plurality of low-noise amplifiers, and the second SIM controls the automatic gain control for at least a second subset of the plurality of low-noise amplifiers, and wherein the timing for updating the automatic gain control is at least partially based on which of the first SIM or the second SIM controls the associated low-noise amplifier.

13. The method according to claim 9, wherein identifying the low-noise amplifier configuration comprises: determining that a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication exceeds a threshold, and in response to the determining, selecting a low-noise amplifier configuration in which the first SIM controls at least one of the two or more internal low-noise amplifiers and at least one of the two or more external low-noise amplifiers, and in which the second SIM controls at least one of the two or more internal low-noise amplifiers.

14. The method according to claim 13, wherein the threshold is at least partially based on a gain control or dynamic tuning range of the two or more internal low-noise amplifiers.

15. The method according to claim 1, the method further comprising: determining that the first SIM has a higher priority than the second SIM; and mapping a first subset of the two or more antenna ports to the first SIM at least partially based on the higher priority of the first SIM, and wherein the low-noise amplifier configuration is at least partially based on the mapping.

16. The method according to claim 1, wherein the receiving further comprises: when the first communication has a stronger signal strength than the second communication, setting one or more analog-to-digital converter (ADC) parameters for the first communication at least partially based on a frequency offset between the first communication and the second communication.

17. The method according to claim 1, wherein the identification includes: identifying a first low-noise amplifier configuration at least partially based on the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, the first low-noise amplifier configuration specifying that each SIM uses each antenna port and an associated low-noise amplifier to receive a respective first communication and second communication, and wherein the method further comprises: after identifying the first low-noise amplifier configuration, determining that the difference between the first received signal strength and the second received signal strength exceeds the first threshold; in response to the determining, selecting a second low-noise amplifier configuration, wherein the second low-noise amplifier configuration specifies that the first SIM controls a first subset of low-noise amplifiers associated with a first subset of the two or more antenna ports, and the second SIM controls a second subset of low-noise amplifiers associated with a second subset of the two or more antenna ports; receiving the first communication using the first subset of low-noise amplifiers via the first subset of antenna ports; and receiving the second communication using the second subset of low-noise amplifiers via the second subset of antenna ports.

18. The method according to claim 17, wherein the difference between the first received signal strength and the second received signal strength is determined at least in part based on a filtered received signal strength indicator (RSSI) in a sliding window, the filtered RSSI being associated with the first communication and the second communication.

19. The method according to claim 17, wherein the determining comprises: determining that the difference between the first received signal strength and the second received signal strength exceeds the first threshold a predetermined number of times within a predetermined period of time.

20. The method according to claim 17, the method further comprising: after selecting the second low-noise amplifier configuration, determining that the difference between the first received signal strength and the second received signal strength is less than or equal to a second threshold; in response to determining that the difference between the first received signal strength and the second received signal strength is less than or equal to the second threshold, selecting the first low-noise amplifier configuration; and receiving the first communication and the second communication via the two or more antenna ports at least in part based on the first low-noise amplifier configuration.

21. The method according to claim 20, wherein the second threshold is less than the first threshold.

22. The method according to claim 17, wherein during a period when the first SIM is not in a sleep mode, the first SIM controls a plurality of low-noise amplifiers in the first low-noise amplifier configuration, and during a period when the first SIM is in the sleep mode, the second SIM controls the plurality of low-noise amplifiers in the first low-noise amplifier configuration.

23. The method according to claim 17, wherein the first SIM pauses communication during one or more time slots at least in part based on a timing drift associated with the first communication or a time-division duplex (TDD) configuration mismatch between the first communication and the second communication.

24. The method according to claim 1, wherein: identifying a first low-noise amplifier configuration for receiving the first communication and the second communication among the two or more available low-noise amplifier configurations at least in part based on the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, the first low-noise amplifier configuration specifying that each SIM uses each antenna port and an associated low-noise amplifier to receive a corresponding first communication and second communication, and wherein when the first received signal strength exceeds the second received signal strength, the first SIM controls the gain control for each associated low-noise amplifier among the associated low-noise amplifiers.

25. The method according to claim 1, wherein the identifying comprises: In response to the UE being in a first state, identify a first low-noise amplifier configuration, in which state the difference between the first received signal strength and the second received signal strength is less than or equal to a first threshold, and each SIM uses each of the two or more antenna ports for the concurrent communication; In response to the UE being in a second state, identify a second low-noise amplifier configuration, in which state the difference between the first received signal strength and the second received signal strength exceeds the first threshold, and the second low-noise amplifier configuration specifies that the one of the first SIM or the second SIM with a lower service priority provides gain control for a first subset of the two or more antenna ports having a relatively large received signal strength difference, and the other of the first SIM or the second SIM provides gain control for the antenna ports other than the first subset of the two or more antenna ports; and In response to the UE being in a third state, identify a third low-noise amplifier configuration, in which state the difference between the first received signal strength and the second received signal strength exceeds a second threshold greater than the first threshold, and the third low-noise amplifier configuration specifies that the one of the first SIM or the second SIM with a higher service priority uses only a first subset of the two or more antenna ports having a relatively small received signal strength difference, and the other of the first SIM or the second SIM uses only one or more other antenna ports outside the first subset of the two or more antenna ports.

26. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: in a dual-subscriber dual-active mode, establish a first communication link using a first subscriber identity module (SIM) of the UE via two or more antenna ports; in the dual-subscriber dual-active mode, establish a second communication link using a second SIM of the UE via the two or more antenna ports, the dual-subscriber dual-active mode being for receiving concurrent communication for at least the first SIM and the second SIM via the two or more antenna ports of the UE, the concurrent communication including a first communication using the first SIM and a second communication using the second SIM; identify, at least in part based on the activation of the dual-subscriber dual-active mode, a low-noise amplifier configuration for receiving each of the first communication and the second communication from two or more available low-noise amplifier configurations, the identification being at least in part based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication; and Receive the first communication and the second communication via the two or more antenna ports, at least in part based on the identified low-noise amplifier configuration.

27. The apparatus according to claim 26, wherein the instructions for identifying the low-noise amplifier configuration are executable by the processor to cause the apparatus to: Measure a first received signal strength associated with the first communication and a second received signal strength associated with the second communication to determine a difference between the first received signal strength and the second received signal strength; In response to the difference between the first received signal strength and the second received signal strength being less than or equal to a first threshold, select a first low-noise amplifier configuration in which each of the first SIM and the second SIM uses each low-noise amplifier of a plurality of low-noise amplifiers associated with a set of antenna ports for receiving both the first communication and the second communication; And In response to the difference between the first received signal strength and the second received signal strength exceeding the first threshold, select a second low-noise amplifier configuration in which the first SIM controls a first subset of low-noise amplifiers associated with a first subset of the set of antenna ports, and the second SIM controls a second subset of low-noise amplifiers associated with a second subset of the set of antenna ports.

28. The apparatus according to claim 26, wherein the identified low-noise amplifier configuration provides control of a plurality of low-noise amplifiers at the UE, the plurality of low-noise amplifiers including two or more internal low-noise amplifiers within the UE's wireless modem and two or more external low-noise amplifiers external to the UE's wireless modem.

29. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Components for establishing a first communication link via two or more antenna ports using a first subscriber identity module (SIM) of the UE in a dual-subscriber dual-active mode; Components for establishing a second communication link via the two or more antenna ports using a second SIM of the UE in the dual-subscriber dual-active mode, the dual-subscriber dual-active mode for receiving concurrent communications for at least the first SIM and the second SIM via the two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM; Components for identifying a low-noise amplifier configuration for receiving each of the first communication and the second communication from two or more available low-noise amplifier configurations, at least in part based on activation of the dual-subscriber dual-active mode, the identification being at least in part based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication; And A component for receiving the first communication and the second communication via the two or more antenna ports, at least in part based on the identified low-noise amplifier configuration.

30. A non-transitory computer-readable medium storing code for wireless communication at a user equipment (UE), the code including instructions executable by a processor to perform the following operations: In a dual-subscriber dual-active mode, establish a first communication link via two or more antenna ports using a first subscriber identity module (SIM) of the UE; In the dual-subscriber dual-active mode, establish a second communication link via the two or more antenna ports using a second SIM of the UE, the dual-subscriber dual-active mode being for receiving concurrent communications for at least the first SIM and the second SIM via the two or more antenna ports of the UE, the concurrent communications including a first communication using the first SIM and a second communication using the second SIM; Identify, at least in part based on the activation of the dual-subscriber dual-active mode, a low-noise amplifier configuration for receiving each of the first communication and the second communication from two or more available low-noise amplifier configurations, the identification being at least in part based on a difference between a first received signal strength associated with the first communication and a second received signal strength associated with the second communication; And Receive the first communication and the second communication via the two or more antenna ports, at least in part based on the identified low-noise amplifier configuration.

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