Patent Publication Number: US-2023155656-A1

Title: Communications using dynamic beam weights

Description:
FIELD OF THE DISCLOSURE 
     Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for communications using dynamic beam weights. 
     BACKGROUND 
     Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP). 
     A wireless network may include one or more base stations that support communication for a user equipment (UE) or multiple UEs. A UE may communicate with a base station via downlink communications and uplink communications. “Downlink” (or “DL”) refers to a communication link from the base station to the UE, and “uplink” (or “UL”) refers to a communication link from the UE to the base station. 
     The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate on a municipal, national, regional, and/or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. 
     SUMMARY 
     Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include determining, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beamforming beam weight calculation for selecting beam weights for communications between the UE and a base station. The method may include selecting the beam weights for the communications using the dynamic beam weight calculation. The method may include communicating, using the beam weights, with the base station. 
     Some aspects described herein relate to a method of wireless communication performed by a base station. The method may include transmitting, to a UE, configuration information indicating that the UE is to switch, based at least in part on at least one of a plurality of conditions being met, from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and the base station. The method may include receiving, from the UE, a request for one or more reference signals associated with the dynamic beam weight calculation. The method may include transmitting, to the UE, the one or more reference signals. 
     Some aspects described herein relate to a UE for wireless communication. The user equipment may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to determine, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and a base station. The one or more processors may be configured to select the beam weights for the communications using the dynamic beam weight calculation. The one or more processors may be configured to communicate, using the beam weights, with the base station. 
     Some aspects described herein relate to a base station for wireless communication. The base station may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to transmit, to a UE, configuration information indicating that the UE is to switch, based at least in part on at least one of a plurality of conditions being met, from a static codebook to a dynamic beam weight calculation for selecting beam weights for communications between the UE and the base station. The one or more processors may be configured to receive, from the UE, a request for one or more reference signals associated with the dynamic beam weight calculation. The one or more processors may be configured to transmit, to the UE, the one or more reference signals. 
     Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to determine, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and a base station. The set of instructions, when executed by one or more processors of the UE, may cause the UE to select the beam weights for the communications using the dynamic beam weight calculation. The set of instructions, when executed by one or more processors of the UE, may cause the UE to communicate, using the beam weights, with the base station. 
     Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a base station. The set of instructions, when executed by one or more processors of the base station, may cause the base station to transmit, to a UE, configuration information indicating that the UE is to switch, based at least in part on at least one of a plurality of conditions being met, from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and the base station. The set of instructions, when executed by one or more processors of the base station, may cause the base station to receive, from the UE, a request for one or more reference signals associated with the dynamic beam weight calculation. The set of instructions, when executed by one or more processors of the base station, may cause the base station to transmit, to the UE, the one or more reference signals. 
     Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for determining, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and a base station. The apparatus may include means for selecting the beam weights for the communications using the dynamic beam weight calculation. The apparatus may include means for communicating, using the beam weights, with the base station. 
     Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for transmitting, to a UE, configuration information indicating that the UE is to switch, based at least in part on at least one of a plurality of conditions being met, from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and the base station. The apparatus may include means for receiving, from the UE, a request for one or more reference signals associated with the dynamic beam weight calculation. The apparatus may include means for transmitting, to the UE, the one or more reference signals. 
     Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the drawings and specification. 
     The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The conception and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. Characteristics of the concepts disclosed herein, both their organization and method of operation, together with associated advantages, will be better understood from the following description when considered in connection with the accompanying figures. Each of the figures is provided for the purposes of illustration and description, and not as a definition of the limits of the claims. 
     While aspects are described in the present disclosure by illustration to some examples, those skilled in the art will understand that such aspects may be implemented in many different arrangements and scenarios. Techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements. For example, some aspects may be implemented via integrated chip embodiments or other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, and/or artificial intelligence devices). Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and/or system-level components. Devices incorporating described aspects and features may include additional components and features for implementation and practice of claimed and described aspects. For example, transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and/or summers). It is intended that aspects described herein may be practiced in a wide variety of devices, components, systems, distributed arrangements, and/or end-user devices of varying size, shape, and constitution. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       So that the above-recited features of the present disclosure can be understood in detail, a more particular description, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements. 
         FIG.  1    is a diagram illustrating an example of a wireless network, in accordance with the present disclosure. 
         FIG.  2    is a diagram illustrating an example of a base station in communication with a user equipment (UE) in a wireless network, in accordance with the present disclosure. 
         FIG.  3    is a diagram illustrating an example of physical channels and reference signals in a wireless network, in accordance with the present disclosure. 
         FIG.  4    is a diagram illustrating an example of beamforming architecture that supports beamforming for millimeter wave (mmW) communications, in accordance with the present disclosure. 
         FIG.  5    is a diagram illustrating an example of antenna ports, in accordance with the present disclosure. 
         FIG.  6    is a diagram illustrating an example of beam management procedures, in accordance with the present disclosure. 
         FIG.  7    is a diagram illustrating an example associated with communications using dynamic beam weights, in accordance with the present disclosure. 
         FIGS.  8  and  9    are diagrams illustrating example processes associated with communications using dynamic beam weights, in accordance with the present disclosure. 
         FIGS.  10  and  11    are diagrams of example apparatuses for wireless communication, in accordance with the present disclosure. 
     
    
    
     DETAILED DESCRIPTION 
     Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. One skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover such an apparatus or method which is practiced using other structure, functionality, or structure and functionality in addition to or other than the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of a claim. 
     Several aspects of telecommunication systems will now be presented with reference to various apparatuses and techniques. These apparatuses and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, or the like (collectively referred to as “elements”). These elements may be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. 
     While aspects may be described herein using terminology commonly associated with a 5G or New Radio (NR) radio access technology (RAT), aspects of the present disclosure can be applied to other RATs, such as a 3G RAT, a 4G RAT, and/or a RAT subsequent to 5G (e.g., 6G). 
       FIG.  1    is a diagram illustrating an example of a wireless network  100 , in accordance with the present disclosure. The wireless network  100  may be or may include elements of a 5G (e.g., NR) network and/or a 4G (e.g., Long Term Evolution (LTE)) network, among other examples. The wireless network  100  may include one or more base stations  110  (shown as a BS  110   a , a BS  110   b , a BS  110   c , and a BS  110   d ), a user equipment (UE)  120  or multiple UEs  120  (shown as a UE  120   a , a UE  120   b , a UE  120   c , a UE  120   d , and a UE  120   e ), and/or other network entities. A base station  110  is an entity that communicates with UEs  120 . A base station  110  (sometimes referred to as a BS) may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, and/or a transmission reception point (TRP). Each base station  110  may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term “cell” can refer to a coverage area of a base station  110  and/or a base station subsystem serving this coverage area, depending on the context in which the term is used. 
     A base station  110  may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs  120  with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs  120  with service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs  120  having association with the femto cell (e.g., UEs  120  in a closed subscriber group (CSG)). A base station  110  for a macro cell may be referred to as a macro base station. A base station  110  for a pico cell may be referred to as a pico base station. A base station  110  for a femto cell may be referred to as a femto base station or an in-home base station. In the example shown in  FIG.  1   , the BS  110   a  may be a macro base station for a macro cell  102   a , the BS  110   b  may be a pico base station for a pico cell  102   b , and the BS  110   c  may be a femto base station for a femto cell  102   c . A base station may support one or multiple (e.g., three) cells. 
     In some examples, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a base station  110  that is mobile (e.g., a mobile base station). In some examples, the base stations  110  may be interconnected to one another and/or to one or more other base stations  110  or network nodes (not shown) in the wireless network  100  through various types of backhaul interfaces, such as a direct physical connection or a virtual network, using any suitable transport network. 
     The wireless network  100  may include one or more relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a base station  110  or a UE  120 ) and send a transmission of the data to a downstream station (e.g., a UE  120  or a base station  110 ). A relay station may be a UE  120  that can relay transmissions for other UEs  120 . In the example shown in  FIG.  1   , the BS  110   d  (e.g., a relay base station) may communicate with the BS  110   a  (e.g., a macro base station) and the UE  120   d  in order to facilitate communication between the BS  110   a  and the UE  120   d . A base station  110  that relays communications may be referred to as a relay station, a relay base station, a relay, or the like. 
     The wireless network  100  may be a heterogeneous network that includes base stations  110  of different types, such as macro base stations, pico base stations, femto base stations, relay base stations, or the like. These different types of base stations  110  may have different transmit power levels, different coverage areas, and/or different impacts on interference in the wireless network  100 . For example, macro base stations may have a high transmit power level (e.g., 5 to 40 watts) whereas pico base stations, femto base stations, and relay base stations may have lower transmit power levels (e.g., 0.1 to 2 watts). 
     A network controller  130  may couple to or communicate with a set of base stations  110  and may provide coordination and control for these base stations  110 . The network controller  130  may communicate with the base stations  110  via a backhaul communication link. The base stations  110  may communicate with one another directly or indirectly via a wireless or wireline backhaul communication link. 
     The UEs  120  may be dispersed throughout the wireless network  100 , and each UE  120  may be stationary or mobile. A UE  120  may include, for example, an access terminal, a terminal, a mobile station, and/or a subscriber unit. A UE  120  may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and/or a satellite radio), a vehicular component or sensor, a smart meter/sensor, industrial manufacturing equipment, a global positioning system device, and/or any other suitable device that is configured to communicate via a wireless medium. 
     Some UEs  120  may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. An MTC UE and/or an eMTC UE may include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, and/or a location tag, that may communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs  120  may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs  120  may be considered a Customer Premises Equipment. A UE  120  may be included inside a housing that houses components of the UE  120 , such as processor components and/or memory components. In some examples, the processor components and the memory components may be coupled together. For example, the processor components (e.g., one or more processors) and the memory components (e.g., a memory) may be operatively coupled, communicatively coupled, electronically coupled, and/or electrically coupled. 
     In general, any number of wireless networks  100  may be deployed in a given geographic area. Each wireless network  100  may support a particular RAT and may operate on one or more frequencies. A RAT may be referred to as a radio technology, an air interface, or the like. A frequency may be referred to as a carrier, a frequency channel, or the like. Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed. 
     In some examples, two or more UEs  120  (e.g., shown as UE  120   a  and UE  120   e ) may communicate directly using one or more sidelink channels (e.g., without using a base station  110  as an intermediary to communicate with one another). For example, the UEs  120  may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol), and/or a mesh network. In such examples, a UE  120  may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the base station  110 . 
     Devices of the wireless network  100  may communicate using the electromagnetic spectrum, which may be subdivided by frequency or wavelength into various classes, bands, channels, or the like. For example, devices of the wireless network  100  may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “Sub-6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with regard to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz-300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band. 
     The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have identified an operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz-24.25 GHz). Frequency bands falling within FR3 may inherit FR1 characteristics and/or FR2 characteristics, and thus may effectively extend features of FR1 and/or FR2 into mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz-71 GHz), FR4 (52.6 GHz-114.25 GHz), and FR5 (114.25 GHz-300 GHz). Each of these higher frequency bands falls within the EHF band. 
     With the above examples in mind, unless specifically stated otherwise, it should be understood that the term “sub-6 GHz” or the like, if used herein, may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Further, unless specifically stated otherwise, it should be understood that the term “millimeter wave” or the like, if used herein, may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and/or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and/or FR5) may be modified, and techniques described herein are applicable to those modified frequency ranges. 
     In some aspects, the UE  120  may include a communication manager  140 . As described in more detail elsewhere herein, the communication manager  140  may determine, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beamforming beam weight calculation for selecting beam weights for communications between the UE and a base station; select the beam weights for the communications using the dynamic beam weight calculation; and communicate, using the beam weights, with the base station. Additionally, or alternatively, the communication manager  140  may perform one or more other operations described herein. 
     In some aspects, the base station  110  may include a communication manager  150 . As described in more detail elsewhere herein, the communication manager  150  may transmit, to a user equipment (UE), configuration information indicating that the UE is to switch, based at least in part on at least one of a plurality of conditions being met, from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and the base station; receive, from the UE, a request for one or more reference signals associated with the dynamic beam weight calculation; and transmit, to the UE, the one or more reference signals. Additionally, or alternatively, the communication manager  150  may perform one or more other operations described herein. 
     As indicated above,  FIG.  1    is provided as an example. Other examples may differ from what is described with regard to  FIG.  1   . 
       FIG.  2    is a diagram illustrating an example  200  of a base station  110  in communication with a UE  120  in a wireless network  100 , in accordance with the present disclosure. The base station  110  may be equipped with a set of antennas  234   a  through  234   t , such as T antennas (T≥1). The UE  120  may be equipped with a set of antennas  252   a  through  252   r , such as R antennas (R≥1). 
     At the base station  110 , a transmit processor  220  may receive data, from a data source  212 , intended for the UE  120  (or a set of UEs  120 ). The transmit processor  220  may select one or more modulation and coding schemes (MCSs) for the UE  120  based at least in part on one or more channel quality indicators (CQIs) received from that UE  120 . The base station  110  may process (e.g., encode and modulate) the data for the UE  120  based at least in part on the MCS(s) selected for the UE  120  and may provide data symbols for the UE  120 . The transmit processor  220  may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor  220  may generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS)) and synchronization signals (e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor  230  may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems  232  (e.g., T modems), shown as modems  232   a  through  232   t . For example, each output symbol stream may be provided to a modulator component (shown as MOD) of a modem  232 . Each modem  232  may use a respective modulator component to process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modem  232  may further use a respective modulator component to process (e.g., convert to analog, amplify, filter, and/or upconvert) the output sample stream to obtain a downlink signal. The modems  232   a  through  232   t  may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas  234  (e.g., T antennas), shown as antennas  234   a  through  234   t.    
     At the UE  120 , a set of antennas  252  (shown as antennas  252   a  through  252   r ) may receive the downlink signals from the base station  110  and/or other base stations  110  and may provide a set of received signals (e.g., R received signals) to a set of modems  254  (e.g., R modems), shown as modems  254   a  through  254   r . For example, each received signal may be provided to a demodulator component (shown as DEMOD) of a modem  254 . Each modem  254  may use a respective demodulator component to condition (e.g., filter, amplify, downconvert, and/or digitize) a received signal to obtain input samples. Each modem  254  may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector  256  may obtain received symbols from the modems  254 , may perform MIMO detection on the received symbols if applicable, and may provide detected symbols. A receive processor  258  may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE  120  to a data sink  260 , and may provide decoded control information and system information to a controller/processor  280 . The term “controller/processor” may refer to one or more controllers, one or more processors, or a combination thereof. A channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and/or a CQI parameter, among other examples. In some examples, one or more components of the UE  120  may be included in a housing  284 . 
     The network controller  130  may include a communication unit  294 , a controller/processor  290 , and a memory  292 . The network controller  130  may include, for example, one or more devices in a core network. The network controller  130  may communicate with the base station  110  via the communication unit  294 . 
     One or more antennas (e.g., antennas  234   a  through  234   t  and/or antennas  252   a  through  252   r ) may include, or may be included within, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and/or one or more antenna arrays, among other examples. An antenna panel, an antenna group, a set of antenna elements, and/or an antenna array may include one or more antenna elements (within a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, and/or one or more antenna elements coupled to one or more transmission and/or reception components, such as one or more components of  FIG.  2   . 
     On the uplink, at the UE  120 , a transmit processor  264  may receive and process data from a data source  262  and control information (e.g., for reports that include RSRP, RSSI, RSRQ, and/or CQI) from the controller/processor  280 . The transmit processor  264  may generate reference symbols for one or more reference signals. The symbols from the transmit processor  264  may be precoded by a TX MIMO processor  266  if applicable, further processed by the modems  254  (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station  110 . In some examples, the modem  254  of the UE  120  may include a modulator and a demodulator. In some examples, the UE  120  includes a transceiver. The transceiver may include any combination of the antenna(s)  252 , the modem(s)  254 , the MIMO detector  256 , the receive processor  258 , the transmit processor  264 , and/or the TX MIMO processor  266 . The transceiver may be used by a processor (e.g., the controller/processor  280 ) and the memory  282  to perform aspects of any of the methods described herein (e.g., with reference to  FIGS.  6 - 11   ). 
     At the base station  110 , the uplink signals from UE  120  and/or other UEs may be received by the antennas  234 , processed by the modem  232  (e.g., a demodulator component, shown as DEMOD, of the modem  232 ), detected by a MIMO detector  236  if applicable, and further processed by a receive processor  238  to obtain decoded data and control information sent by the UE  120 . The receive processor  238  may provide the decoded data to a data sink  239  and provide the decoded control information to the controller/processor  240 . The base station  110  may include a communication unit  244  and may communicate with the network controller  130  via the communication unit  244 . The base station  110  may include a scheduler  246  to schedule one or more UEs  120  for downlink and/or uplink communications. In some examples, the modem  232  of the base station  110  may include a modulator and a demodulator. In some examples, the base station  110  includes a transceiver. The transceiver may include any combination of the antenna(s)  234 , the modem(s)  232 , the MIMO detector  236 , the receive processor  238 , the transmit processor  220 , and/or the TX MIMO processor  230 . The transceiver may be used by a processor (e.g., the controller/processor  240 ) and the memory  242  to perform aspects of any of the methods described herein (e.g., with reference to  FIGS.  6 - 11   ). 
     The controller/processor  240  of the base station  110 , the controller/processor  280  of the UE  120 , and/or any other component(s) of  FIG.  2    may perform one or more techniques associated with communications using dynamic beam weights, as described in more detail elsewhere herein. For example, the controller/processor  240  of the base station  110 , the controller/processor  280  of the UE  120 , and/or any other component(s) of  FIG.  2    may perform or direct operations of, for example, process  800  of  FIG.  8   , process  900  of  FIG.  9   , and/or other processes as described herein. The memory  242  and the memory  282  may store data and program codes for the base station  110  and the UE  120 , respectively. In some examples, the memory  242  and/or the memory  282  may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly, or after compiling, converting, and/or interpreting) by one or more processors of the base station  110  and/or the UE  120 , may cause the one or more processors, the UE  120 , and/or the base station  110  to perform or direct operations of, for example, process  800  of  FIG.  8   , process  900  of  FIG.  9   , and/or other processes as described herein. In some examples, executing instructions may include running the instructions, converting the instructions, compiling the instructions, and/or interpreting the instructions, among other examples. 
     In some aspects, the UE includes means for determining, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beamforming beam weight calculation for selecting beam weights for communications between the UE and a base station; means for selecting the beam weights for the communications using the dynamic beam weight calculation; and/or means for communicating, using the beam weights, with the base station. The means for the UE to perform operations described herein may include, for example, one or more of communication manager  140 , antenna  252 , modem  254 , MIMO detector  256 , receive processor  258 , transmit processor  264 , TX MIMO processor  266 , controller/processor  280 , or memory  282 . 
     In some aspects, the base station includes means for transmitting, to a user equipment (UE), configuration information indicating that the UE is to switch, based at least in part on at least one of a plurality of conditions being met, from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and the base station; means for receiving, from the UE, a request for one or more reference signals associated with the dynamic beam weight calculation; and/or means for transmitting, to the UE, the one or more reference signals. The means for the base station to perform operations described herein may include, for example, one or more of communication manager  150 , transmit processor  220 , TX MIMO processor  230 , modem  232 , antenna  234 , MIMO detector  236 , receive processor  238 , controller/processor  240 , memory  242 , or scheduler  246 . 
     While blocks in  FIG.  2    are illustrated as distinct components, the functions described above with respect to the blocks may be implemented in a single hardware, software, or combination component or in various combinations of components. For example, the functions described with respect to the transmit processor  264 , the receive processor  258 , and/or the TX MIMO processor  266  may be performed by or under the control of the controller/processor  280 . 
     As indicated above,  FIG.  2    is provided as an example. Other examples may differ from what is described with regard to  FIG.  2   . 
       FIG.  3    is a diagram illustrating an example  300  of physical channels and reference signals (RSs) in a wireless network, in accordance with the present disclosure. As shown in  FIG.  3   , downlink channels and downlink reference signals may carry information from a base station  110  to a UE  120 , and uplink channels and uplink reference signals may carry information from a UE  120  to a base station  110 . 
     As shown, a downlink channel may include a physical downlink control channel (PDCCH) that carries downlink control information (DCI), a physical downlink shared channel (PDSCH) that carries downlink data, or a physical broadcast channel (PBCH) that carries system information, among other examples. In some aspects, PDSCH communications may be scheduled by PDCCH communications. As further shown, an uplink channel may include a physical uplink control channel (PUCCH) that carries uplink control information (UCI), a physical uplink shared channel (PUSCH) that carries uplink data, or a physical random access channel (PRACH) used for initial network access, among other examples. In some aspects, the UE  120  may transmit acknowledgement (ACK) or negative acknowledgement (NACK) feedback (e.g., ACK/NACK feedback or ACK/NACK information) in UCI on the PUCCH and/or the PUSCH. 
     As further shown, a downlink reference signal may include a synchronization signal block (SSB), a channel state information (CSI) reference signal (CSI-RS), a demodulation reference signal (DMRS), a positioning reference signal (PRS), or a phase tracking reference signal (PTRS), among other examples. As also shown, an uplink reference signal may include a sounding reference signal (SRS), a DMRS, or a PTRS, among other examples. 
     An SSB may carry information used for initial network acquisition and synchronization, such as a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH, and a PBCH DMRS. An SSB is sometimes referred to as a synchronization signal/PBCH (SS/PBCH) block. In some aspects, the base station  110  may transmit multiple SSBs on multiple corresponding beams, and the SSBs may be used for beam selection. 
     A CSI-RS may carry information used for downlink channel estimation (e.g., downlink CSI acquisition), which may be used for scheduling, link adaptation, or beam management, among other examples. The base station  110  may configure a set of CSI-RSs for the UE  120 , and the UE  120  may measure the configured set of CSI-RSs. Based at least in part on the measurements, the UE  120  may perform channel estimation and may report channel estimation parameters to the base station  110  (e.g., in a CSI report), such as a channel quality indicator (CQI), a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), a layer indicator (LI), a rank indicator (RI), or a reference signal received power (RSRP), among other examples. The base station  110  may use the CSI report to select transmission parameters for downlink communications to the UE  120 , such as a number of transmission layers (e.g., a rank), a precoding matrix (e.g., a precoder), a modulation and coding scheme (MCS), or a refined downlink beam (e.g., using a beam refinement procedure or a beam management procedure), among other examples. 
     A DMRS may carry information used to estimate a radio channel for demodulation of an associated physical channel (e.g., PDCCH, PDSCH, PBCH, PUCCH, or PUSCH). The design and mapping of a DMRS may be specific to a physical channel for which the DMRS is used for estimation. DMRSs are UE-specific, can be beamformed, can be confined in a scheduled resource (e.g., rather than transmitted on a wideband), and can be transmitted only when necessary. As shown, DMRSs are used for both downlink communications and uplink communications. 
     A PTRS may carry information used to compensate for oscillator phase noise. Typically, the phase noise increases as the oscillator carrier frequency increases. Thus, PTRS can be utilized at high carrier frequencies, such as millimeter wave frequencies, to mitigate phase noise. The PTRS may be used to track the phase of the local oscillator and to enable suppression of phase noise and common phase error (CPE). As shown, PTRSs are used for both downlink communications (e.g., on the PDSCH) and uplink communications (e.g., on the PUSCH). 
     A PRS may carry information used to enable timing or ranging measurements of the UE  120  based on signals transmitted by the base station  110  to improve observed time difference of arrival (OTDOA) positioning performance. For example, a PRS may be a pseudo-random Quadrature Phase Shift Keying (QPSK) sequence mapped in diagonal patterns with shifts in frequency and time to avoid collision with cell-specific reference signals and control channels (e.g., a PDCCH). In general, a PRS may be designed to improve detectability by the UE  120 , which may need to detect downlink signals from multiple neighboring base stations in order to perform OTDOA-based positioning. Accordingly, the UE  120  may receive a PRS from multiple cells (e.g., a reference cell and one or more neighbor cells), and may report a reference signal time difference (RSTD) based on OTDOA measurements associated with the PRSs received from the multiple cells. In some aspects, the base station  110  may then calculate a position of the UE  120  based on the RSTD measurements reported by the UE  120 . 
     An SRS may carry information used for uplink channel estimation, which may be used for scheduling, link adaptation, precoder selection, or beam management, among other examples. The base station  110  may configure one or more SRS resource sets for the UE  120 , and the UE  120  may transmit SRSs on the configured SRS resource sets. An SRS resource set may have a configured usage, such as uplink CSI acquisition, downlink CSI acquisition for reciprocity-based operations, uplink beam management, among other examples. In some aspects, the configuration for an SRS resource set may indicate a use case (e.g., in an SRS-SetUse information element) for the SRS resource set. For example, an SRS resource set may have a use case of antenna switching, codebook, non-codebook, or beam management. The base station  110  may measure the SRSs, may perform channel estimation based at least in part on the measurements, and may use the SRS measurements to configure communications with the UE  120 . 
     In some aspects, a codebook SRS resource set may be used to indicate uplink CSI when a base station  110  indicates an uplink precoder to the UE  120 . For example, when the base station  110  is configured to indicate an uplink precoder to the UE  120  (e.g., using a precoder codebook), the base station  110  may use a codebook SRS (e.g., an SRS transmitted using a resource of a codebook SRS resource set) to acquire uplink CSI (e.g., to determine an uplink precoder to be indicated to the UE  120  and used by the UE  120  to communicate with the base station  110 ). In some aspects, virtual ports (e.g., a combination of two or more antenna ports) with a maximum transmit power may be supported at least for a codebook SRS. 
     In some aspects, a non-codebook SRS resource set may be used to indicate uplink CSI when the UE  120  selects an uplink precoder (e.g., instead of the base station  110  indicated an uplink precoder to be used by the UE  120 . For example, when the UE  120  is configured to select an uplink precoder, the base station  110  may use a non-codebook SRS (e.g., an SRS transmitted using a resource of a non-codebook SRS resource set) to acquire uplink CSI. In this case, the non-codebook SRS may be precoded using a precoder selected by the UE  120  (e.g., which may be indicated to the base station  110 ). 
     A beam management SRS resource set may be used for indicating CSI for millimeter wave communications. 
     An SRS resource can be configured as periodic, semi-persistent (sometimes referred to as semi-persistent scheduling (SPS)), or aperiodic. A periodic SRS resource may be configured via a configuration message that indicates a periodicity of the SRS resource (e.g., a slot-level periodicity, where the SRS resources occurs every Y slots) and a slot offset. In some cases, a periodic SRS resource may always be activated, and may not be dynamically activated or deactivated. A semi-persistent SRS resource may also be configured via a configuration message that indicates a periodicity and a slot offset for the semi-persistent SRS resource, and may be dynamically activated and deactivated (e.g., using DCI or a medium access control (MAC) control element (CE) (MAC-CE)). An aperiodic SRS resource may be triggered dynamically, such as via DCI (e.g., UE-specific DCI or group common DCI) or a MAC-CE. 
     As indicated above,  FIG.  3    is provided as an example. Other examples may differ from what is described with regard to  FIG.  3   . 
       FIG.  4    is a diagram illustrating an example beamforming architecture  400  that supports beamforming for millimeter wave (mmW) communications, in accordance with the present disclosure. In some aspects, architecture  400  may implement aspects of wireless network  100 . In some aspects, architecture  400  may be implemented in a transmitting device (e.g., a first wireless communication device, UE, or base station) and/or a receiving device (e.g., a second wireless communication device, UE, or base station), as described herein. 
     Broadly,  FIG.  4    is a diagram illustrating example hardware components of a wireless communication device in accordance with certain aspects of the disclosure. The illustrated components may include those that may be used for antenna element selection and/or for beamforming for transmission of wireless signals. There are numerous architectures for antenna element selection and implementing phase shifting, only one example of which is illustrated here. The architecture  400  includes a modem (modulator/demodulator)  402 , a digital to analog converter (DAC)  404 , a first mixer  406 , a second mixer  408 , and a splitter  410 . The architecture  400  also includes multiple first amplifiers  412 , multiple phase shifters  414 , multiple second amplifiers  416 , and an antenna array  418  that includes multiple antenna elements  420 . In some examples, the modem  402  may be one or more of the modems  232  or modems  254  described in connection with  FIG.  2   . 
     Transmission lines or other waveguides, wires, and/or traces are shown connecting the various components to illustrate how signals to be transmitted may travel between components. Reference numbers  422 ,  424 ,  426 , and  428  indicate regions in the architecture  400  in which different types of signals travel or are processed. Specifically, reference number  422  indicates a region in which digital baseband signals travel or are processed, reference number  424  indicates a region in which analog baseband signals travel or are processed, reference number  426  indicates a region in which analog intermediate frequency (IF) signals travel or are processed, and reference number  428  indicates a region in which analog radio frequency (RF) signals travel or are processed. The architecture also includes a local oscillator A  430 , a local oscillator B  432 , and a controller/processor  434 . In some aspects, controller/processor  434  corresponds to controller/processor  240  of the base station described above in connection with  FIG.  2    and/or controller/processor  280  of the UE described above in connection with  FIG.  2   . 
     Each of the antenna elements  420  may include one or more sub-elements for radiating or receiving RF signals. For example, a single antenna element  420  may include a first sub-element cross-polarized with a second sub-element that can be used to independently transmit cross-polarized signals. The antenna elements  420  may include patch antennas, dipole antennas, or other types of antennas arranged in a linear pattern, a two dimensional pattern, or another pattern. A spacing between antenna elements  420  may be such that signals with a desired wavelength transmitted separately by the antenna elements  420  may interact or interfere (e.g., to form a desired beam). For example, given an expected range of wavelengths or frequencies, the spacing may provide a quarter wavelength, half wavelength, or other fraction of a wavelength of spacing between neighboring antenna elements  420  to allow for interaction or interference of signals transmitted by the separate antenna elements  420  within that expected range. 
     The modem  402  processes and generates digital baseband signals and may also control operation of the DAC  404 , first and second mixers  406 ,  408 , splitter  410 , first amplifiers  412 , phase shifters  414 , and/or the second amplifiers  416  to transmit signals via one or more or all of the antenna elements  420 . The modem  402  may process signals and control operation in accordance with a communication standard such as a wireless standard discussed herein. The DAC  404  may convert digital baseband signals received from the modem  402  (and that are to be transmitted) into analog baseband signals. The first mixer  406  upconverts analog baseband signals to analog IF signals within an IF using a local oscillator A  430 . For example, the first mixer  406  may mix the signals with an oscillating signal generated by the local oscillator A  430  to “move” the baseband analog signals to the IF. In some cases, some processing or filtering (not shown) may take place at the IF. The second mixer  408  upconverts the analog IF signals to analog RF signals using the local oscillator B  432 . Similar to the first mixer, the second mixer  408  may mix the signals with an oscillating signal generated by the local oscillator B  432  to “move” the IF analog signals to the RF or the frequency at which signals will be transmitted or received. The modem  402  and/or the controller/processor  434  may adjust the frequency of local oscillator A  430  and/or the local oscillator B  432  so that a desired IF and/or RF frequency is produced and used to facilitate processing and transmission of a signal within a desired bandwidth. 
     In the illustrated architecture  400 , signals upconverted by the second mixer  408  are split or duplicated into multiple signals by the splitter  410 . The splitter  410  in architecture  400  splits the RF signal into multiple identical or nearly identical RF signals. In other examples, the split may take place with any type of signal, including with baseband digital, baseband analog, or IF analog signals. Each of these signals may correspond to an antenna element  420 , and the signal travels through and is processed by amplifiers  412 ,  416 , phase shifters  414 , and/or other elements corresponding to the respective antenna element  420  to be provided to and transmitted by the corresponding antenna element  420  of the antenna array  418 . In one example, the splitter  410  may be an active splitter that is connected to a power supply and provides some gain so that RF signals exiting the splitter  410  are at a power level equal to or greater than the signal entering the splitter  410 . In another example, the splitter  410  is a passive splitter that is not connected to power supply and the RF signals exiting the splitter  410  may be at a power level lower than the RF signal entering the splitter  410 . 
     After being split by the splitter  410 , the resulting RF signals may enter an amplifier, such as a first amplifier  412 , or a phase shifter  414  corresponding to an antenna element  420 . The first and second amplifiers  412 ,  416  are illustrated with dashed lines because one or both of them might not be necessary in some aspects. In some aspects, both the first amplifier  412  and second amplifier  416  are present. In some aspects, neither the first amplifier  412  nor the second amplifier  416  is present. In some aspects, one of the two amplifiers  412 ,  416  is present but not the other. By way of example, if the splitter  410  is an active splitter, the first amplifier  412  may not be used. By way of further example, if the phase shifter  414  is an active phase shifter that can provide a gain, the second amplifier  416  might not be used. 
     The amplifiers  412 ,  416  may provide a desired level of positive or negative gain. A positive gain (positive dB) may be used to increase an amplitude of a signal for radiation by a specific antenna element  420 . A negative gain (negative dB) may be used to decrease an amplitude and/or suppress radiation of the signal by a specific antenna element. Each of the amplifiers  412 ,  416  may be controlled independently (e.g., by the modem  402  or the controller/processor  434 ) to provide independent control of the gain for each antenna element  420 . For example, the modem  402  and/or the controller/processor  434  may have at least one control line connected to each of the splitter  410 , first amplifiers  412 , phase shifters  414 , and/or second amplifiers  416  that may be used to configure a gain to provide a desired amount of gain for each component and thus each antenna element  420 . 
     The phase shifter  414  may provide a configurable phase shift or phase offset to a corresponding RF signal to be transmitted. The phase shifter  414  may be a passive phase shifter not directly connected to a power supply. Passive phase shifters might introduce some insertion loss. The second amplifier  416  may boost the signal to compensate for the insertion loss. The phase shifter  414  may be an active phase shifter connected to a power supply such that the active phase shifter provides some amount of gain or prevents insertion loss. The settings of each of the phase shifters  414  are independent, meaning that each can be independently set to provide a desired amount of phase shift or the same amount of phase shift or some other configuration. The modem  402  and/or the controller/processor  434  may have at least one control line connected to each of the phase shifters  414  and which may be used to configure the phase shifters  414  to provide a desired amount of phase shift or phase offset between antenna elements  420 . 
     In the illustrated architecture  400 , RF signals received by the antenna elements  420  are provided to one or more first amplifiers  456  to boost the signal strength. The first amplifiers  456  may be connected to the same antenna arrays  418  (e.g., for time division duplex (TDD) operations). The first amplifiers  456  may be connected to different antenna arrays  418 . The boosted RF signal is input into one or more phase shifters  454  to provide a configurable phase shift or phase offset for the corresponding received RF signal to enable reception via one or more Rx beams. The phase shifter  454  may be an active phase shifter or a passive phase shifter. The settings of the phase shifters  454  are independent, meaning that each can be independently set to provide a desired amount of phase shift or the same amount of phase shift or some other configuration. The modem  402  and/or the controller/processor  434  may have at least one control line connected to each of the phase shifters  454  and which may be used to configure the phase shifters  454  to provide a desired amount of phase shift or phase offset between antenna elements  420  to enable reception via one or more Rx beams. 
     The outputs of the phase shifters  454  may be input to one or more second amplifiers  452  for signal amplification of the phase shifted received RF signals. The second amplifiers  452  may be individually configured to provide a configured amount of gain. The second amplifiers  452  may be individually configured to provide an amount of gain to ensure that the signals input to combiner  450  have the same magnitude. The amplifiers  452  and/or  456  are illustrated in dashed lines because they might not be necessary in some aspects. In some aspects, both the amplifier  452  and the amplifier  456  are present. In another aspect, neither the amplifier  452  nor the amplifier  456  are present. In other aspects, one of the amplifiers  452 ,  456  is present but not the other. 
     In the illustrated architecture  400 , signals output by the phase shifters  454  (via the amplifiers  452  when present) are combined in combiner  450 . The combiner  450  in architecture  400  combines the RF signal into a signal. The combiner  450  may be a passive combiner (e.g., not connected to a power source), which may result in some insertion loss. The combiner  450  may be an active combiner (e.g., connected to a power source), which may result in some signal gain. When combiner  450  is an active combiner, it may provide a different (e.g., configurable) amount of gain for each input signal so that the input signals have the same magnitude when they are combined. When combiner  450  is an active combiner, the combiner  450  may not need the second amplifier  452  because the active combiner may provide the signal amplification. 
     The output of the combiner  450  is input into mixers  448  and  446 . Mixers  448  and  446  generally down convert the received RF signal using inputs from local oscillators  472  and  470 , respectively, to create intermediate or baseband signals that carry the encoded and modulated information. The output of the mixers  448  and  446  are input into an analog-to-digital converter (ADC)  444  for conversion to analog signals. The analog signals output from ADC  444  is input to modem  402  for baseband processing, such as decoding, de-interleaving, or similar operations. 
     The architecture  400  is given by way of example only to illustrate an architecture for transmitting and/or receiving signals. In some cases, the architecture  400  and/or each portion of the architecture  400  may be repeated multiple times within an architecture to accommodate or provide an arbitrary number of RF chains, antenna elements, and/or antenna panels. Furthermore, numerous alternate architectures are possible and contemplated. For example, although only a single antenna array  418  is shown, two, three, or more antenna arrays may be included, each with one or more of their own corresponding amplifiers, phase shifters, splitters, mixers, DACs, ADCs, and/or modems. For example, a single UE may include two, four, or more antenna arrays for transmitting or receiving signals at different physical locations on the UE or in different directions. 
     Furthermore, mixers, splitters, amplifiers, phase shifters and other components may be located in different signal type areas (e.g., represented by different ones of the reference numbers  422 ,  424 ,  426 ,  428 ) in different implemented architectures. For example, a split of the signal to be transmitted into multiple signals may take place at the analog RF, analog IF, analog baseband, or digital baseband frequencies in different examples. Similarly, amplification and/or phase shifts may also take place at different frequencies. For example, in some aspects, one or more of the splitter  410 , amplifiers  412 ,  416 , or phase shifters  414  may be located between the DAC  404  and the first mixer  406  or between the first mixer  406  and the second mixer  408 . In one example, the functions of one or more of the components may be combined into one component. For example, the phase shifters  414  may perform amplification to include or replace the first and/or or second amplifiers  412 ,  416 . By way of another example, a phase shift may be implemented by the second mixer  408  to obviate the need for a separate phase shifter  414 . This technique is sometimes called local oscillator (LO) phase shifting. In some aspects of this configuration, there may be multiple IF to RF mixers (e.g., for each antenna element chain) within the second mixer  408 , and the local oscillator B  432  may supply different local oscillator signals (with different phase offsets) to each IF to RF mixer. 
     The modem  402  and/or the controller/processor  434  may control one or more of the other components  404  through  472  to select one or more antenna elements  420  and/or to form beams for transmission of one or more signals. For example, the antenna elements  420  may be individually selected or deselected for transmission of a signal (or signals) by controlling an amplitude of one or more corresponding amplifiers, such as the first amplifiers  412  and/or the second amplifiers  416 . Beamforming includes generation of a beam using multiple signals on different antenna elements, where one or more or all of the multiple signals are shifted in phase relative to each other. The formed beam may carry physical or higher layer reference signals or information. As each signal of the multiple signals is radiated from a respective antenna element  420 , the radiated signals interact, interfere (constructive and destructive interference), and amplify each other to form a resulting beam. The shape (such as the amplitude, width, and/or presence of side lobes) and the direction (such as an angle of the beam relative to a surface of the antenna array  418 ) can be dynamically controlled by modifying the phase shifts or phase offsets imparted by the phase shifters  414  and amplitudes imparted by the amplifiers  412 ,  416  of the multiple signals relative to each other. The controller/processor  434  may be located partially or fully within one or more other components of the architecture  400 . For example, the controller/processor  434  may be located within the modem  402  in some aspects. 
     As indicated above,  FIG.  4    is provided as an example. Other examples may differ from what is described with regard to  FIG.  4   . 
       FIG.  5    is a diagram illustrating an example  500  of antenna ports, in accordance with the present disclosure. 
     As shown in  FIG.  5   , a first physical antenna  505 - 1  may transmit information via a first channel h1, a second physical antenna  505 - 2  may transmit information via a second channel h2, a third physical antenna  505 - 3  may transmit information via a third channel h3, and a fourth physical antenna  505 - 4  may transmit information via a fourth channel h4. Such information may be conveyed via a logical antenna port, which may represent some combination of the physical antennas and/or channels. In some cases, a UE  120  may not have knowledge of the channels associated with the physical antennas, and may only operate based on knowledge of the channels associated with antenna ports, as defined below. 
     An antenna port may be defined such that a channel, over which a symbol on the antenna port is conveyed, can be inferred from a channel over which another symbol on the same antenna port is conveyed. In example  500 , a channel associated with antenna port 1 (AP1) is represented as h1−h2+h3+j*h4, where channel coefficients (e.g., 1, −1, 1, and j, in this case) represent weighting factors (e.g., indicating phase and/or gain) applied to each channel. Such weighting factors may be applied to the channels to improve signal power and/or signal quality at one or more receivers. Applying such weighting factors to channel transmissions may be referred to as precoding, and a precoder may refer to a specific set of weighting factors applied to a set of channels. 
     Similarly, a channel associated with antenna port 2 (AP2) is represented as h1+j*h3, and a channel associated with antenna port 3 (AP3) is represented as 2*h1−h2+(1+j)*h3+j*h4. In this case, antenna port 3 can be represented as the sum of antenna port 1 and antenna port 2 (e.g., AP3=AP1+AP2) because the sum of the expression representing antenna port 1 (h1−h2+h3+j*h4) and the expression representing antenna port 2 (h1+j*h3) equals the expression representing antenna port 3 (2*h1−h2+(1+j)*h3+j*h4). It can also be said that antenna port 3 is related to antenna ports 1 and 2 [AP1,AP2] via the precoder [1,1] because 1 times the expression representing antenna port 1 plus 1 times the expression representing antenna port 2 equals the expression representing antenna port 3. 
     As indicated above,  FIG.  5    is provided merely as an example. Other examples may differ from what is described with regard to  FIG.  5   . 
       FIG.  6    is a diagram illustrating examples  600 ,  610 , and  620  of CSI-RS beam management procedures, in accordance with the present disclosure. As shown in  FIG.  6   , examples  600 ,  610 , and  620  include a UE  120  in communication with a base station  110  in a wireless network (e.g., wireless network  100 ). However, the devices shown in  FIG.  6    are provided as examples, and the wireless network may support communication and beam management between other devices (e.g., between a UE  120  and a base station  110  or transmission reception point (TRP), between a mobile termination node and a control node, between an integrated access and backhaul (IAB) child node and an IAB parent node, and/or between a scheduled node and a scheduling node). In some aspects, the UE  120  and the base station  110  may be in a connected state (e.g., a radio resource control (RRC) connected state). 
     As shown in  FIG.  6   , example  600  may include a base station  110  and a UE  120  communicating to perform beam management using CSI-RSs. Example  600  depicts a first beam management procedure (e.g., P1 CSI-RS beam management). The first beam management procedure may be referred to as a beam selection procedure, an initial beam acquisition procedure, a beam sweeping procedure, a cell search procedure, and/or a beam search procedure. As shown in  FIG.  6    and example  600 , CSI-RSs may be configured to be transmitted from the base station  110  to the UE  120 . The CSI-RSs may be configured to be periodic (e.g., using RRC signaling), semi-persistent (e.g., using media access control (MAC) control element (MAC-CE) signaling), and/or aperiodic (e.g., using DCI). 
     The first beam management procedure may include the base station  110  performing beam sweeping over multiple transmit (Tx) beams. The base station  110  may transmit a CSI-RS using each transmit beam for beam management. To enable the UE  120  to perform receive (Rx) beam sweeping, the base station may use a transmit beam to transmit (e.g., with repetitions) each CSI-RS at multiple times within the same RS resource set so that the UE  120  can sweep through receive beams in multiple transmission instances. For example, if the base station  110  has a set of N transmit beams and the UE  120  has a set of M receive beams, the CSI-RS may be transmitted on each of the N transmit beams M times so that the UE  120  may receive M instances of the CSI-RS per transmit beam. In other words, for each transmit beam of the base station  110 , the UE  120  may perform beam sweeping through the receive beams of the UE  120 . As a result, the first beam management procedure may enable the UE  120  to measure a CSI-RS on different transmit beams using different receive beams to support selection of base station  110  transmit beams/UE  120  receive beam(s) beam pair(s). The UE  120  may report the measurements to the base station  110  to enable the base station  110  to select one or more beam pair(s) for communication between the base station  110  and the UE  120 . While example  600  has been described in connection with CSI-RSs, the first beam management process may also use SSBs for beam management in a similar manner as described above. 
     As shown in  FIG.  6   , example  610  may include a base station  110  and a UE  120  communicating to perform beam management using CSI-RSs. Example  610  depicts a second beam management procedure (e.g., P2 CSI-RS beam management). The second beam management procedure may be referred to as a beam refinement procedure, a base station beam refinement procedure, a TRP beam refinement procedure, and/or a transmit beam refinement procedure. As shown in  FIG.  6    and example  610 , CSI-RSs may be configured to be transmitted from the base station  110  to the UE  120 . The CSI-RSs may be configured to be aperiodic (e.g., using DCI). The second beam management procedure may include the base station  110  performing beam sweeping over one or more transmit beams. The one or more transmit beams may be a subset of all transmit beams associated with the base station  110  (e.g., determined based at least in part on measurements reported by the UE  120  in connection with the first beam management procedure). The base station  110  may transmit a CSI-RS using each transmit beam of the one or more transmit beams for beam management. The UE  120  may measure each CSI-RS using a single (e.g., a same) receive beam (e.g., determined based at least in part on measurements performed in connection with the first beam management procedure). The second beam management procedure may enable the base station  110  to select a best transmit beam based at least in part on measurements of the CSI-RSs (e.g., measured by the UE  120  using the single receive beam) reported by the UE  120 . 
     As shown in  FIG.  6   , example  620  depicts a third beam management procedure (e.g., P3 CSI-RS beam management). The third beam management procedure may be referred to as a beam refinement procedure, a UE beam refinement procedure, and/or a receive beam refinement procedure. As shown in  FIG.  6    and example  620 , one or more CSI-RSs may be configured to be transmitted from the base station  110  to the UE  120 . The CSI-RSs may be configured to be aperiodic (e.g., using DCI). The third beam management process may include the base station  110  transmitting the one or more CSI-RSs using a single transmit beam (e.g., determined based at least in part on measurements reported by the UE  120  in connection with the first beam management procedure and/or the second beam management procedure). To enable the UE  120  to perform receive beam sweeping, the base station may use a transmit beam to transmit (e.g., with repetitions) CSI-RS at multiple times within the same RS resource set so that UE  120  can sweep through one or more receive beams in multiple transmission instances. The one or more receive beams may be a subset of all receive beams associated with the UE  120  (e.g., determined based at least in part on measurements performed in connection with the first beam management procedure and/or the second beam management procedure). The third beam management procedure may enable the base station  110  and/or the UE  120  to select a best receive beam based at least in part on reported measurements received from the UE  120  (e.g., of the CSI-RS of the transmit beam using the one or more receive beams). 
     As indicated above,  FIG.  6    is provided as an example of beam management procedures. Other examples of beam management procedures may differ from what is described with respect to  FIG.  6   . For example, the UE  120  and the base station  110  may perform the third beam management procedure before performing the second beam management procedure, and/or the UE  120  and the base station  110  may perform a similar beam management procedure to select a UE transmit beam. 
     As described herein, a UE and base station may use reference signals to enable channel estimation, which may facilitate selection of beam weights (e.g., via a transmitted precoding matrix indicator (TPMI)) for communications between the UE and the base station. A static codebook approach may enable the base station to provide the UE with an indication of beam weights to be used for uplink and/or downlink communications. The static codebook is limited to a particular size, based on both the amount of storage used to store the static codebook and based on the number of bits required for the base station to identify a particular codebook configuration. Therefore, the static codebook approach covers a limited range of potential beam weights, which might not be an optimal set of beam weights for uplink and/or downlink communications. In addition, the UE does not determine the beam weights using the static codebook approach, but is instructed by the base station which beam weights to use. 
     Some techniques and apparatuses described herein provide a UE with the ability to communicate using dynamically selected beam weights. For example, the UE may switch between a static codebook approach and a dynamic beam weight selection approach in situations where the UE may take advantage of beam weights that might be better suited for communications than pre-configured static codebook beam weights. In addition, the UE may be able to switch between different dynamic beam weight selection techniques based on various circumstances specific to the UE. As a result, the UE may be able to transmit communications with beam weights determined dynamically, which may improve the quality of the communications (e.g., with respect to noise, bandwidth, and/or the like), and reduce the likelihood of poor quality communications with the base station. Improving the quality of network communications may conserve processing and networking resources, of both UEs and base stations, which might otherwise be used to re-transmit communications that are of lower quality. 
       FIG.  7    is a diagram illustrating an example  700  of communications using dynamic beam weights, in accordance with the present disclosure. As shown in  FIG.  7   , a UE (e.g., UE  120 ) may communicate (e.g., transmit an uplink transmission and/or receive a downlink transmission) with a base station (e.g., base station  110 ). In some aspects, the UE may communicate with another UE via one or more sidelink communications (e.g., in addition to, or in place of, communicating with the base station). The UE and the base station may be part of a wireless network (e.g., wireless network  100 ). 
     As shown by reference number  705 , the base station may transmit, and the UE may receive, configuration information. In some aspects, the UE may receive configuration information from another device (e.g., from another base station or another UE). In some aspects, the UE may receive the configuration information via RRC signaling and/or medium access control (MAC) signaling (e.g., MAC control elements (MAC CEs)). In some aspects, the configuration information may include an indication of one or more configuration parameters (e.g., already known to the UE) for selection by the UE and/or explicit configuration information for the UE to use to configure the UE. 
     In some aspects, the configuration information may indicate that the UE is to selectively switch between a static codebook technique to a dynamic beam weight calculation technique for communications with the base station. For example, the UE may be configured to switch between a static codebook to a dynamic beam weight calculation based on one or more conditions being met. The dynamic beam weights may be calculated based at least in part on a channel estimation technique, and the UE may determine the channel estimation technique based on various factors. In some aspects, the configuration information may indicate that the base station may provide, upon request, reference signals for the UE to use in determining the beam weights. 
     As shown by reference number  710 , the UE may configure the UE for communicating with the base station. In some aspects, the UE may configure the UE based at least in part on the configuration information. In some aspects, the UE may be configured to perform one or more operations described herein. 
     As shown by reference number  715 , the UE may transmit, and the base station may receive, an indication of a configuration of the UE to communicate (e.g., one or more of uplink transmissions or downlink transmissions) using dynamic beam weights. For example, the UE may indicate a capability of the UE to switch between a static codebook approach for uplink and/or downlink transmissions to a dynamic beam weight calculation technique. In some aspects, the UE may transmit the indication via RRC signaling, one or more MAC CEs, and/or a physical uplink control channel (PUCCH) message, among other examples. 
     As shown by reference number  720 , the UE may determine, based at least in part on at least one of multiple conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and the base station. For example, the UE may be in communication with the base station for transmission of data and/or control information using a static codebook to determine beam weights for transmitting uplink communications and receiving downlink communications (e.g., the static codebook may have been used to determine beam weights for transmission of the indication associated with reference number  715 ). When a condition, or set of conditions, is satisfied, the UE may switch from using the static codebook to a dynamic beam weight calculation for the communications with the base station. 
     In some aspects, the condition, or conditions, may include at least one of the following: a UE signal blockage condition (e.g., a body part or other physical object physically blocking at least a portion of signal transmitted via one or more of the antennas of the UE), a performance requirement condition associated with the UE (e.g., in a situation where using the static codebook does not meet a threshold performance metric, such as data rate, signal to interference and noise ratio (SINR), received signal strength indicator (RSSI) reported by the base station, and/or the like), a channel environment condition (e.g., availability of multiple clusters corresponding to distinct propagation paths associated with the channel between the transmitter and receiver, a threshold angular spread associated with the clusters, and/or the like), or some combination thereof. For example, the UE may determine whether a condition or multiple conditions have been met based on various measurements and/or feedback from the base station and/or other nodes of the network, including signal quality measurements (e.g., RSSI, SINR, and/or the like) associated with one or more antennas of the UE. 
     As shown by reference number  725 , the UE may determine the channel estimation technique based at least in part on one or more factors relevant to channel estimation. For example, there may be multiple channel estimation techniques that may be used to determine and select beam weights for an uplink or downlink communication. For a channel estimation technique, H ij (k) may denote an N×M channel matrix between the jth polarization at the base station side, and the ith polarization at the UE side, over the kth subcarrier (where i,j=0,1 for dual-polarized systems). N may denote the number of antennas at the UE side, while M may denote the number of antennas at the base station side. Due to polarization mixing over reference signals (e.g., SSBs, CSI-RSs, and/or the like), for the ith polarization at the UE side, and the kth subcarrier, the following equation represents the estimation of (k): 
         h   i ( k )= H   i0 ( k ) f   0   +H   i1 ( k ) f   1    
     where f 0  and f 1  denote the base station side beams used over the 0th and 1st polarization. 
     In some aspects, the channel estimation technique may include an instantaneous channel estimation technique. The instantaneous channel estimation technique may assume that h i (k) is dominated over some subcarrier k*, estimate h i (k), and use h i (k) over all subcarriers. The chosen subcarrier may be selected using any method, including a random selection method. Using the instantaneous channel estimation technique to estimate the channel using one subcarrier, the number of reference signals needed to perform the estimation may scale linearly with the number of UE antennas, N. In some aspects, the estimation of h i (k*) may take 3N−2 reference signals (e.g., SSBs or CSI-RSs). 
     In some aspects, the channel estimation technique may include a statistics-based channel estimation technique. The statistics-based channel estimation technique may include an estimation of a covariance matrix of h i (k) and use the covariance matrix for all subcarriers. In this situation, beamforming may be based on the dominant eigenvector of the covariance matrix, and estimation of the beamforming vector may take N 2  reference signals (e.g., SSBs or CSI-RSs). Other variations may be used, though the statistics-based channel estimation technique generally scales quadratically with the number of antennas, N. 
     Given the different channel estimation techniques, the UE may determine which technique to use based at least in part on a variety of factors. For example, the factors may include: an amount of available computational power of the UE, dimensions of an antenna array used by the UE, a type of reference signal used for channel estimation (e.g., SSB or CSI-RS), a number of reference signals used for channel estimation, a speed associated with the UE (e.g., a velocity), a latency requirement of an application associated with the UE, a signal quality requirement associated with the UE, or some combination thereof. For example, the statistics-based channel estimation technique may typically lead to better 2-layer signal to noise ratio (SNR) gain than the instantaneous channel estimation technique, though the statistics-based channel estimation technique may use more network resources (e.g., more reference signals required and quadratic scaling) and/or processing resources (e.g., more computational overhead associated with Eigenvector computation and quadratic scaling). 
     As described herein, the channel estimation technique may use one or more reference signals to generate one or more channel matrices (e.g., including one or more channel covariance matrices). In some aspects, the number of reference signals scales linearly with the number of antennas of the UE. For example, in a situation where the UE uses a 4×1 dual-polarized antenna array and requires 3N−2 reference signals for the instantaneous channel estimation technique, the UE may request 10 reference signals (e.g., 10=3(4)−2). In some aspects, the number of reference signals scales quadratically with the number of antennas of the UE. For example, in a situation where the UE uses the 4×1 dual-polarized antenna array and requires N 2  reference signals for the statistics-based channel estimation technique, the UE may request 16 reference signals (e.g., 16=4 2 ). In some aspects, the beam weights may be associated with phase shifter quantization, amplitude control quantization, or some combination thereof. For example, a combination of phase shifter quantization and amplitude control quantization may result in higher gain relative to phase shifter only quantization. 
     As shown by reference number  730 , the UE may transmit, and the base station may receive, a request for a number of reference signals. As described herein, the UE may request a number of reference signals that is based at least in part on the channel estimation technique. The reference signals may include SSBs, CSI-RSs, and/or the like. In some aspects, the request may be associated with a short burst of multiple reference signals (e.g., associated with the instantaneous channel estimation technique). In some aspects, the request may be associated with a long burst of multiple reference signals (e.g., associated with the statistics-based channel estimation technique). 
     As shown by reference number  735 , the base station may transmit, and the UE may receive, the reference signals associated with the request. For example, as described herein, the base station may transmit a short burst of reference signals or a long burst of reference signals, based at least in part on the request. In some aspects, the base station may transmit multiple reference signals (e.g., each of the requested reference signals) via the same antenna port of the base station. 
     As shown by reference number  740 , the UE may select the beam weights for the communications using the dynamic beam weight calculation. As described herein, the selection of the beam weights may include generating one or more channel matrices using a channel estimation technique (e.g., the instantaneous channel estimation technique or generating one or more channel covariance matrices using the statistics-based channel estimation technique) and selecting the beam weights from one of the matrices. For example, the UE may use the channel estimation technique to generate a channel matrix for each of the reference signals requested/received by the UE. 
     As shown by reference number  745 , the UE may transmit, and the base station may receive, the uplink communication. The uplink communication may be transmitted using the beam weights selected using the dynamic beam weight calculation. 
     While the example  700  describes switching from a static analog beamforming codebook weight approach to selecting beam weights to a dynamic analog beam weight calculation, in some aspects, the UE may switch from one dynamic analog beam weight calculation technique to another. For example, the UE may switch from the instantaneous channel estimation technique to the statistics-based channel estimation technique, or from the statistics-based channel estimation technique to the instantaneous channel estimation technique. In this situation, the UE may determine which channel estimation technique to use in a manner similar to that described herein (e.g., with reference to reference number  725 ). For example, the UE and/or base station may repeat the actions associated with reference numbers  725 ,  730 ,  735 , and  740  to switch between channel estimation techniques. 
     As indicated above,  FIG.  7    is provided as an example. Other examples may differ from what is described with regard to  FIG.  7   . 
       FIG.  8    is a diagram illustrating an example process  800  performed, for example, by a UE, in accordance with the present disclosure. Example process  800  is an example where the UE (e.g., UE 120 ) performs operations associated with communications using dynamic beam weights. 
     As shown in  FIG.  8   , in some aspects, process  800  may include determining, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beamforming beam weight calculation for selecting beam weights for communications between the UE and a base station (block  810 ). For example, the UE (e.g., using communication manager  140  and/or determination component  1008 , depicted in  FIG.  10   ) may determine, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beamforming beam weight calculation for selecting beam weights for communications between the UE and a base station, as described above. 
     As further shown in  FIG.  8   , in some aspects, process  800  may include selecting the beam weights for the communications using the dynamic beam weight calculation (block  820 ). For example, the UE (e.g., using communication manager  140  and/or selection component  1010 , depicted in  FIG.  10   ) may select the beam weights for the communications using the dynamic beam weight calculation, as described above. 
     As further shown in  FIG.  8   , in some aspects, process  800  may include communicating, using the beam weights, with the base station (block  830 ). For example, the UE (e.g., using communication manager  140 , transmission component  1004 , and/or reception component  1002 , depicted in  FIG.  10   ) may communicate, using the beam weights, with the base station, as described above. 
     Process  800  may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein. 
     In a first aspect, the plurality of conditions comprises a UE signal blockage condition, a performance requirement condition associated with the UE, a channel environment condition, or some combination thereof. 
     In a second aspect, alone or in combination with the first aspect, the beam weights are associated with at least phase shifter quantization, amplitude control quantization, or some combination thereof. 
     In a third aspect, alone or in combination with one or more of the first and second aspects, selecting the beam weights comprises generating one or more channel matrices or one or more channel covariance matrices using a channel estimation technique, and selecting the beam weights using a channel matrix of the one or more channel matrices or the one or more channel covariance matrices. 
     In a fourth aspect, alone or in combination with one or more of the first through third aspects, process  800  includes determining the channel estimation technique from a plurality of channel estimation techniques based at least in part on at least an amount of available computational power of the UE, dimensions of an antenna array used by the UE, a type of reference signal used for channel estimation, a number of reference signals used for channel estimation, a speed associated with the UE, a latency requirement of an application associated with the UE, a signal quality requirement associated with the UE, or some combination thereof. 
     In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, generating the one or more channel matrices using the channel estimation technique comprises requesting a number of reference signals from the base station, and for each of the reference signals, using the channel estimation technique to generate one of the one or more channel matrices. 
     In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the channel estimation technique comprises one of an instantaneous channel estimation technique, or a statistics-based channel estimation technique. 
     In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the instantaneous channel estimation technique uses a number of reference signals that scales linearly with a number of antennas of the UE. 
     In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the statistics-based channel estimation technique uses a number of reference signals that scales quadratically with a number of antennas of the UE. 
     Although  FIG.  8    shows example blocks of process  800 , in some aspects, process  800  may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in  FIG.  8   . Additionally, or alternatively, two or more of the blocks of process  800  may be performed in parallel. 
       FIG.  9    is a diagram illustrating an example process  900  performed, for example, by a base station, in accordance with the present disclosure. Example process  900  is an example where the base station (e.g., base station  110 ) performs operations associated with communications using dynamic beam weights. 
     As shown in  FIG.  9   , in some aspects, process  900  may include transmitting, to a user equipment (UE), configuration information indicating that the UE is to switch, based at least in part on at least one of a plurality of conditions being met, from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and the base station (block  910 ). For example, the base station (e.g., using communication manager  150  and/or transmission component  1104 , depicted in  FIG.  11   ) may transmit, to a user equipment (UE), configuration information indicating that the UE is to switch, based at least in part on at least one of a plurality of conditions being met, from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and the base station, as described above. 
     As further shown in  FIG.  9   , in some aspects, process  900  may include receiving, from the UE, a request for one or more reference signals associated with the dynamic beam weight calculation (block  920 ). For example, the base station (e.g., using communication manager  150  and/or reception component  1102 , depicted in  FIG.  11   ) may receive, from the UE, a request for one or more reference signals associated with the dynamic beam weight calculation, as described above. 
     As further shown in  FIG.  9   , in some aspects, process  900  may include transmitting, to the UE, the one or more reference signals (block  930 ). For example, the base station (e.g., using communication manager  150  and/or transmission component  1104 , depicted in  FIG.  11   ) may transmit, to the UE, the one or more reference signals, as described above. 
     Process  900  may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein. 
     In a first aspect, the plurality of conditions comprises a UE signal blockage condition, a performance requirement condition associated with the UE, a channel environment condition, or some combination thereof. 
     In a second aspect, alone or in combination with the first aspect, the request is associated with a short burst of multiple reference signals. 
     In a third aspect, alone or in combination with one or more of the first and second aspects, the request is associated with a long burst of multiple reference signals. 
     In a fourth aspect, alone or in combination with one or more of the first through third aspects, the one or more reference signals include a plurality of reference signals transmitted via a same antenna port of the base station. 
     In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, process  900  includes receiving, by the base station and based at least in part on the one or more reference signals, an uplink communication from the UE. 
     Although  FIG.  9    shows example blocks of process  900 , in some aspects, process  900  may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in  FIG.  9   . Additionally, or alternatively, two or more of the blocks of process  900  may be performed in parallel. 
       FIG.  10    is a diagram of an example apparatus  1000  for wireless communication. The apparatus  1000  may be a UE, or a UE may include the apparatus  1000 . In some aspects, the apparatus  1000  includes a reception component  1002  and a transmission component  1004 , which may be in communication with one another (for example, via one or more buses and/or one or more other components). As shown, the apparatus  1000  may communicate with another apparatus  1006  (such as a UE, a base station, or another wireless communication device) using the reception component  1002  and the transmission component  1004 . As further shown, the apparatus  1000  may include the communication manager  140 . The communication manager  140  may include one or more of a determination component  1008 , or a selection component  1010 , among other examples. 
     In some aspects, the apparatus  1000  may be configured to perform one or more operations described herein in connection with  FIGS.  6 - 7   . Additionally, or alternatively, the apparatus  1000  may be configured to perform one or more processes described herein, such as process  800  of  FIG.  8   . In some aspects, the apparatus  1000  and/or one or more components shown in  FIG.  10    may include one or more components of the UE described in connection with  FIG.  2   . Additionally, or alternatively, one or more components shown in  FIG.  10    may be implemented within one or more components described in connection with  FIG.  2   . Additionally, or alternatively, one or more components of the set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component. 
     The reception component  1002  may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus  1006 . The reception component  1002  may provide received communications to one or more other components of the apparatus  1000 . In some aspects, the reception component  1002  may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples), and may provide the processed signals to the one or more other components of the apparatus  1000 . In some aspects, the reception component  1002  may include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller/processor, a memory, or a combination thereof, of the UE described in connection with  FIG.  2   . 
     The transmission component  1004  may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus  1006 . In some aspects, one or more other components of the apparatus  1000  may generate communications and may provide the generated communications to the transmission component  1004  for transmission to the apparatus  1006 . In some aspects, the transmission component  1004  may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and may transmit the processed signals to the apparatus  1006 . In some aspects, the transmission component  1004  may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the UE described in connection with  FIG.  2   . In some aspects, the transmission component  1004  may be co-located with the reception component  1002  in a transceiver. 
     The determination component  1008  may determine, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beamforming beam weight calculation for selecting beam weights for communications between the UE and a base station. The selection component  1010  may select the beam weights for the communications using the dynamic beam weight calculation. The reception component  1002  and/or the transmission component  1004  may communicate, using the beam weights, with the base station. 
     The determination component  1008  may determine the channel estimation technique from a plurality of channel estimation techniques based at least in part on at least an amount of available computational power of the UE, dimensions of an antenna array used by the UE, a type of reference signal used for channel estimation, a number of reference signals used for channel estimation, a speed associated with the UE, a latency requirement of an application associated with the UE, a signal quality requirement associated with the UE, or some combination thereof. 
     The number and arrangement of components shown in  FIG.  10    are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in  FIG.  10   . Furthermore, two or more components shown in  FIG.  10    may be implemented within a single component, or a single component shown in  FIG.  10    may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in  FIG.  10    may perform one or more functions described as being performed by another set of components shown in  FIG.  10   . 
       FIG.  11    is a diagram of an example apparatus  1100  for wireless communication. The apparatus  1100  may be a base station, or a base station may include the apparatus  1100 . In some aspects, the apparatus  1100  includes a reception component  1102  and a transmission component  1104 , which may be in communication with one another (for example, via one or more buses and/or one or more other components). As shown, the apparatus  1100  may communicate with another apparatus  1106  (such as a UE, a base station, or another wireless communication device) using the reception component  1102  and the transmission component  1104 . As further shown, the apparatus  1100  may include the communication manager  150 . 
     In some aspects, the apparatus  1100  may be configured to perform one or more operations described herein in connection with  FIGS.  6 - 7   . Additionally, or alternatively, the apparatus  1100  may be configured to perform one or more processes described herein, such as process  900  of  FIG.  9   . In some aspects, the apparatus  1100  and/or one or more components shown in  FIG.  11    may include one or more components of the base station described in connection with  FIG.  2   . Additionally, or alternatively, one or more components shown in  FIG.  11    may be implemented within one or more components described in connection with  FIG.  2   . Additionally, or alternatively, one or more components of the set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component. 
     The reception component  1102  may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus  1106 . The reception component  1102  may provide received communications to one or more other components of the apparatus  1100 . In some aspects, the reception component  1102  may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples), and may provide the processed signals to the one or more other components of the apparatus  1100 . In some aspects, the reception component  1102  may include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller/processor, a memory, or a combination thereof, of the base station described in connection with  FIG.  2   . 
     The transmission component  1104  may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus  1106 . In some aspects, one or more other components of the apparatus  1100  may generate communications and may provide the generated communications to the transmission component  1104  for transmission to the apparatus  1106 . In some aspects, the transmission component  1104  may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and may transmit the processed signals to the apparatus  1106 . In some aspects, the transmission component  1104  may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the base station described in connection with  FIG.  2   . In some aspects, the transmission component  1104  may be co-located with the reception component  1102  in a transceiver. 
     The transmission component  1104  may transmit, to a user equipment (UE), configuration information indicating that the UE is to switch, based at least in part on at least one of a plurality of conditions being met, from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and the base station. The reception component  1102  may receive, from the UE, a request for one or more reference signals associated with the dynamic beam weight calculation. The transmission component  1104  may transmit, to the UE, the one or more reference signals. 
     The reception component  1102  may receive, based at least in part on the one or more reference signals, an uplink communication from the UE. 
     The number and arrangement of components shown in  FIG.  11    are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in  FIG.  11   . Furthermore, two or more components shown in  FIG.  11    may be implemented within a single component, or a single component shown in  FIG.  11    may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in  FIG.  11    may perform one or more functions described as being performed by another set of components shown in  FIG.  11   . 
     The following provides an overview of some Aspects of the present disclosure: 
     Aspect 1: A method of wireless communication performed by a UE, comprising: determining, based at least in part on at least one of a plurality of conditions being met, to switch from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and a base station; and selecting the beam weights for the communications using the dynamic beam weight calculation; and communicating, using the beam weights, with the base station. 
     Aspect 2: The method of Aspect 1, wherein the plurality of conditions comprises: a UE signal blockage condition, a performance requirement condition associated with the UE, a channel environment condition, or some combination thereof. 
     Aspect 3: The method of any of Aspects 1-2, wherein the beam weights are associated with at least: phase shifter quantization, amplitude control quantization, or some combination thereof. 
     Aspect 4: The method of any of Aspects 1-3, wherein selecting the beam weights comprises: generating one or more channel matrices or one or more channel covariance matrices using a channel estimation technique; and selecting the beam weights using a channel matrix of the one or more channel matrices or the one or more channel covariance matrices. 
     Aspect 5: The method of Aspect 4, further comprising: determining the channel estimation technique from a plurality of channel estimation techniques based at least in part on at least: an amount of available computational power of the UE, dimensions of an antenna array used by the UE, a type of reference signal used for channel estimation, a number of reference signals used for channel estimation, a speed associated with the UE, a latency requirement of an application associated with the UE, a signal quality requirement associated with the UE, or some combination thereof. 
     Aspect 6: The method of any of Aspects 4-5, wherein generating the one or more channel matrices using the channel estimation technique comprises: requesting a number of reference signals from the base station; and for each of the reference signals, using the channel estimation technique to generate one of the one or more channel matrices. 
     Aspect 7: The method of any of Aspects 4-6, wherein the channel estimation technique comprises one of: an instantaneous channel estimation technique, or a statistics-based channel estimation technique. 
     Aspect 8: The method of Aspect 7, wherein the instantaneous channel estimation technique uses a number of reference signals that scales linearly with a number of antennas of the UE. 
     Aspect 9: The method of Aspect 7, wherein the statistics-based channel estimation technique uses a number of reference signals that scales quadratically with a number of antennas of the UE. 
     Aspect 10: A method of wireless communication performed by a base station, comprising: transmitting, to a UE, configuration information indicating that the UE is to switch, based at least in part on at least one of a plurality of conditions being met, from a static analog beamforming codebook to a dynamic analog beam weight calculation for selecting beam weights for communications between the UE and the base station; receiving, from the UE, a request for one or more reference signals associated with the dynamic beam weight calculation; and transmitting, to the UE, the one or more reference signals. 
     Aspect 11: The method of Aspect 10, wherein the plurality of conditions comprises: a UE signal blockage condition, a performance requirement condition associated with the UE, a channel environment condition, or some combination thereof. 
     Aspect 12: The method of any of Aspects 10-11, wherein the request is associated with a short burst of multiple reference signals. 
     Aspect 13: The method of any of Aspects 10-11, wherein the request is associated with a long burst of multiple reference signals. 
     Aspect 14: The method of any of Aspects 10-13, wherein the one or more reference signals include a plurality of reference signals transmitted via a same antenna port of the base station. 
     Aspect 15: The method of any of Aspects 10-14, further comprising: receiving, by the base station and based at least in part on the one or more reference signals, an uplink communication from the UE. 
     Aspect 16: An apparatus for wireless communication at a device, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more of Aspects 1-9. 
     Aspect 16: An apparatus for wireless communication at a device, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more of Aspects 10-15. 
     Aspect 17: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of Aspects 1-9. 
     Aspect 17: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of Aspects 10-15. 
     Aspect 18: An apparatus for wireless communication, comprising at least one means for performing the method of one or more of Aspects 1-9. 
     Aspect 18: An apparatus for wireless communication, comprising at least one means for performing the method of one or more of Aspects 10-15. 
     Aspect 19: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of Aspects 1-9. 
     Aspect 19: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of Aspects 10-15. 
     Aspect 20: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of Aspects 1-9. 
     Aspect 20: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of Aspects 10-15. 
     The foregoing disclosure provides illustration and description but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the aspects. 
     As used herein, the term “component” is intended to be broadly construed as hardware and/or a combination of hardware and software. “Software” shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and/or functions, among other examples, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. As used herein, a “processor” is implemented in hardware and/or a combination of hardware and software. It will be apparent that systems and/or methods described herein may be implemented in different forms of hardware and/or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and/or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and/or methods are described herein without reference to specific software code, since those skilled in the art will understand that software and hardware can be designed to implement the systems and/or methods based, at least in part, on the description herein. 
     As used herein, “satisfying a threshold” may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, or the like. 
     Even though particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. The disclosure of various aspects includes each dependent claim in combination with every other claim in the claim set. As used herein, a phrase referring to “at least one of” a list of items refers to any combination of those items, including single members. As an example, “at least one of: a, b, or c” is intended to cover a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination with multiples of the same element (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other ordering of a, b, and c). 
     No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used herein, the articles “a” and “an” are intended to include one or more items and may be used interchangeably with “one or more.” Further, as used herein, the article “the” is intended to include one or more items referenced in connection with the article “the” and may be used interchangeably with “the one or more.” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items and may be used interchangeably with “one or more.” Where only one item is intended, the phrase “only one” or similar language is used. Also, as used herein, the terms “has,” “have,” “having,” or the like are intended to be open-ended terms that do not limit an element that they modify (e.g., an element “having” A may also have B). Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise. Also, as used herein, the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and/or,” unless explicitly stated otherwise (e.g., if used in combination with “either” or “only one of”).