Method and apparatus for wide bandwidth operation of reporting beamforming

Abstract

Various aspects of the present disclosure relate generally to wireless communications. In some aspects, a user equipment (UE) can transmit to a base station an indication of a frequency range outside an operating bandwidth of the UE based at least in part on the frequency range outside an operating bandwidth of the UE being compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth. The UE can communicate with the base station based at least in part on transmitting the indication of the frequency range outside the operating bandwidth of the UE. Many other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 028,469, filed on May 21, 2020, entitled “REPORTING WIDE BANDWIDTH OPERATION FOR BEAMFORMING,” and U.S. Non-Provisional Patent Application No. 17 / 308,314, filed on May 5, 2021, entitled “REPORTING WIDEBANDWIDTH OPERATION FOR BEAMFORMING,” which are hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and techniques and apparatus for wide bandwidth operation of report beamforming. Background Art

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

[0005] A wireless network may include several base stations (BSs) that may support communications for several user equipments (UEs). A UE may communicate with a BS via a downlink and an uplink. A "downlink" (or "forward link") refers to the communication link from a BS to a UE, while an "uplink" (or "reverse link") refers to the communication link from a UE to a BS. As will be described in detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmission reception point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The above-mentioned access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at the city, country, region and even global level. NR, also known as 5G, is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR aims to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) (CP-OFDM) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple-input multiple-output (MIMO) antenna technology and carrier aggregation, and better integrating with other open standards. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR and other radio access technologies remain useful. Summary of the invention

[0007] In some aspects, a wireless communication method performed by a user equipment (UE) may include: transmitting an indication of the frequency range outside the working bandwidth of the UE to a base station based at least in part on the frequency range outside the working bandwidth of the UE being compatible with one or more sets of analog beamforming beam weights associated with the working bandwidth; and communicating with the base station based at least in part on sending the indication of the frequency range outside the working bandwidth of the UE.

[0008] In some aspects, a wireless communication method performed by a base station may include: receiving an indication of a frequency range outside the UE's operating bandwidth from a UE, the frequency range being compatible with one or more beam weights associated with the UE's operating bandwidth; and communicating with the UE based at least in part on receiving the indication of the frequency range outside the UE's operating bandwidth.

[0009] In some aspects, a UE for wireless communication may include: a memory; and one or more processors coupled to the memory. The one or more processors are configured to: send an indication of the frequency range outside the operating bandwidth of the UE to a base station based at least in part on the frequency range outside the operating bandwidth of the UE being compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth; and communicate with the base station based at least in part on sending the indication of the frequency range outside the operating bandwidth of the UE.

[0010] In some aspects, a base station for wireless communication may include: a memory, and one or more processors coupled to the memory. The one or more processors may be configured to receive from a UE an indication of a frequency range outside an operating bandwidth of the UE, the frequency range being compatible with one or more beam weights associated with the operating bandwidth of the UE; and communicate with the UE based at least in part on receiving the indication of the frequency range outside the operating bandwidth of the UE.

[0011] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When the one or more instructions are executed by one or more processors of a UE, the one or more processors may be caused to: send an indication of the frequency range outside the operating bandwidth of the UE to a base station based at least in part on the frequency range outside the operating bandwidth of the UE being compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth; and communicate with the base station based at least in part on sending the indication of the frequency range outside the operating bandwidth of the UE.

[0012] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When the one or more instructions are executed by one or more processors of a base station, the one or more processors may be caused to: receive from a UE an indication of a frequency range outside an operating bandwidth of the UE, the frequency range being compatible with one or more beam weights associated with the operating bandwidth of the UE; and communicate with the UE based at least in part on receiving the indication of the frequency range outside the operating bandwidth of the UE.

[0013] In some aspects, an apparatus for wireless communication may include: a component for sending an indication of a frequency range outside an operating bandwidth of the UE to a base station based at least in part on the frequency range outside an operating bandwidth of the UE being compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth; and a component for communicating with the base station based at least in part on sending the indication of the frequency range outside the operating bandwidth of the UE.

[0014] In some aspects, an apparatus for wireless communication may include: a component for receiving an indication of a frequency range outside the UE's operating bandwidth from a UE, the frequency range being compatible with one or more beam weights associated with the UE's operating bandwidth; and a component for communicating with the UE based at least in part on receiving the indication of the frequency range outside the UE's operating bandwidth.

[0015] In some aspects, a wireless communication method performed by a UE may include: determining a frequency range outside of an operating bandwidth for the UE to perform beamforming based at least in part on determining that the frequency range is compatible with one or more sets of beamforming parameters associated with the operating bandwidth, wherein the beamforming includes hybrid beamforming; and sending an indication of the frequency range outside of the operating bandwidth for the UE to perform beamforming to a base station.

[0016] In some aspects, a wireless communication method performed by a base station may include: receiving an indication of a frequency range outside of an operating bandwidth of the UE for beamforming from a UE, wherein the beamforming includes hybrid beamforming; and determining, based at least in part on the indication of the frequency range outside of the operating bandwidth of the UE, that the frequency range is compatible with one or more beamforming parameters associated with the operating bandwidth of the UE.

[0017] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as substantially described herein with reference to the accompanying drawings and as illustrated in the drawings and the description.

[0018] The features and technical advantages of examples according to the present disclosure have been outlined quite broadly above so that the subsequent detailed description will be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples can be easily used as a basis for modifying or designing other structures to achieve the same purposes as the present disclosure. Such equivalent structures do not depart from the scope of the appended claims. The features of the concepts disclosed herein, including their organization and methods of operation, and related advantages, will be better understood from the following description when considered in conjunction with the accompanying drawings. Each figure is provided for the purpose of illustration and description and is not intended to be a definition of limitations of the claims.

[0019] Although the various aspects of the present disclosure are described by illustrating some examples, it will be understood by those skilled in the art that these aspects can be implemented in many different arrangements and scenarios. The techniques described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or packaging arrangements. For example, some aspects can be implemented by integrated chip embodiments or other devices based on non-module components (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchasing devices, medical devices, or artificial intelligence-enabled devices). Some aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, or system-level components. Devices incorporating the described aspects and features may include additional components and features to implement and practice the required and described aspects. For example, the transmission and reception of wireless signals may include some components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, or accumulators). The aspects described herein are intended to be implemented in a wide variety of devices, components, systems, distributed arrangements or end-user devices of varying sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to be able to understand the above features of the present disclosure in detail, a more specific description briefly summarized above can be obtained by reference to some aspects, some of which are shown in the accompanying drawings. However, it should be noted that the accompanying drawings only show some typical aspects of the present disclosure and should not be considered as limiting the scope, and the description may include other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0021] Figure 1 is a diagram of an example of a wireless network shown in accordance with the present disclosure.

[0022] Figure 2 is a diagram showing an example of a base station communicating with a UE in a wireless network according to the present disclosure.

[0023] Figure 3 is a diagram of an example beamforming architecture that supports determining sub-dominant clusters in a millimeter wave (mmW) channel according to the present disclosure.

[0024] Figure 4A and 4B is a diagram of one or more examples of wide bandwidth operation of report beamforming shown in accordance with the present disclosure.

[0025] Figure 5is a diagram showing an example process performed, for example, by a UE according to the present disclosure.

[0026] Figure 6 is a diagram showing an example process performed, for example, by a base station according to the present disclosure. DETAILED DESCRIPTION

[0027] Various aspects of the present disclosure are more fully described below with reference to the accompanying drawings. However, the present disclosure can be presented in many different forms and should not be interpreted as limiting any specific structure or function presented in the entire present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings of this article, those skilled in the art should understand that the scope of the present disclosure is intended to cover any aspect disclosed by the present disclosure, whether implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect of the present disclosure. For example, any number of aspects described herein can be used to implement devices or practice methods. In addition, the scope of the present disclosure is intended to cover devices and methods that are practiced using other structures, functions, or structures and functions other than the various aspects described in the present disclosure. It should be understood that any aspect disclosed herein can be implemented by one or more elements of the claims.

[0028] Several aspects of telecommunication systems will now be described with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms and / or the like (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination of both. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0029] It should be noted that while various aspects may be described herein using terminology generally associated with 5G or NR radio access technologies (RATs), aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and / or successor RATs to 5G (e.g., 6G).

[0030] Figure 1is a diagram showing an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network in other examples. The wireless network 100 may include multiple base stations 110 (such as BS110a, BS110b, BS110c, and BS 110d as shown) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, transmission reception point (TRP), etc. Each BS can provide communication coverage for a specific geographic area. In 3GPP, the term "cell" can refer to the coverage area of ​​a BS and / or the coverage area of ​​a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0031] A BS may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). The BS of a macro cell may be referred to as a macro BS. The BS of a pico cell may be referred to as a pico BS. The BS of a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the illustrated example, BS 110a may be a macro BS of macro cell 102a, BS 110b may be a pico BS of pico cell 102b, and BS 110c may be a femto BS of femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5G NB", and "cell" are used interchangeably herein.

[0032] In some aspects, the cell may not necessarily be fixed, and the geographic area of ​​the cell may move depending on the location of the mobile BS. In some aspects, the BS may be interconnected with one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (e.g., direct physical connections or virtual networks) using any suitable transport network.

[0033] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that relays transmissions for another UE. Figure 1 In the example shown, the relay BS 110d may communicate with the macro BS 110a and the UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay BS may also be referred to as a relay station, a relay base station, a relay, or the like.

[0034] The wireless network 100 may be a heterogeneous network including different types of BSs, such as a macro BS, a pico BS, a femto BS, a relay BS, etc. These different types of BSs may have different transmission power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmission power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmission power level (e.g., 0.1 to 2 watts).

[0035] The network controller 130 may be coupled to a group of BSs and may provide coordination and control for the BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly via a wireless or wired backhaul.

[0036] UE 120 (e.g., 120a, 120b, 120c) can be dispersed throughout the wireless network 100, and each UE can be fixed or mobile. UE can also be referred to as an access terminal, terminal, mobile station, subscriber unit, site, etc. UE can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop, 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 or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0037] Some UEs may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote control devices, sensors, meters, monitors and / or location tags, which may communicate with a base station, another device (e.g., a remote device), or some other entity. For example, a wireless node may provide or connect to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as user premises equipment (CPE). UE 120 may be included in a housing that houses components of UE 120, such as a processor component and / or a memory component. In some aspects, the processor component and the memory component may be coupled to each other. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operationally coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0038] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, frequency channel, etc. Each frequency can support a single RAT in a specific geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0039] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, UE 120 may communicate using point-to-point (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols or vehicle-to-infrastructure (V2I) protocols), and / or mesh networks. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations performed by base station 110 as described elsewhere herein.

[0040] The devices of the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various levels, frequency bands, channels, etc. based on frequency or wavelength. For example, the devices of the wireless network 100 can communicate using an operating frequency band having a first frequency range (FR1), which can be from 410 MHz to 7.125 GHz, and / or can communicate using an operating frequency band having a second frequency range (FR2), which can be from 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is above 6 GHz, FR1 is often referred to as a "sub-6 GHz" frequency band. Similarly, although different from the extremely high frequency (EHF) frequency band (30 GHz-300 GHz) identified as a "millimeter wave" frequency band by the International Telecommunication Union (ITU), FR2 is often referred to as a "millimeter wave" frequency band. Therefore, unless otherwise specified, it should be understood that the term "sub-6 GHz" or similar terms, if used herein, can broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise specified, it should be understood that the term "millimeter wave" or similar terms, if used herein, can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or mid-band frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 can be modified, and the techniques described herein are applicable to these modified frequency ranges.

[0041] As mentioned above, providing Figure 1 As an example. Other examples may be related to Figure 1 Different than described.

[0042] Figure 2 is a diagram illustrating an example 200 of base station 110 communicating with UE 120 in wireless network 100 according to the present disclosure. Base station 110 may be equipped with T antennas 234a through 234t and UE 120 may be equipped with R antennas 252a through 252r, where in general T≥1 and R≥1.

[0043] In the base station 110, the transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., 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 also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). If applicable, transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, and can provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 can process a corresponding output symbol stream (e.g., OFDM) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t can be transmitted through T antennas 234a to 234t, respectively.

[0044] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations, and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, down-convert, and digitize) the received signal to obtain input samples. Each demodulator 254 may also process the input samples (e.g., OFDM) to obtain received symbols. If applicable, a MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data to a data sink 260 for UE 120, and 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 of the two. The channel processor can 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 channel quality indicator (CQI) parameter, among other examples. In some aspects, one or more components of UE 120 can be included in housing 284.

[0045] 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 through the communication unit 294.

[0046] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include, or may be included in, one or more antenna panels, antenna groups, antenna element groups, and / or other example antenna arrays. An antenna panel, antenna group, antenna element group, and / or antenna array may include one or more antenna elements. An antenna panel, antenna group, antenna element group, and / or an antenna array may include a group of coplanar antenna elements and / or a group of non-coplanar antenna elements. An antenna panel, antenna group, antenna element group, and / or an antenna array may include antenna elements within a single housing and / or antenna elements within multiple housings. An antenna panel, antenna group, antenna element group, and / or an antenna array may include one or more antenna elements coupled to one or more transmit and / or receive components, such as Figure 2 One or more components of a

[0047] In the uplink, in the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from a controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. If applicable, the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, further processed by modulators 254a through 254r (e.g., DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in a modem of the UE 120. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antenna 252, modulator and / or demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., as described with reference to Figure 4A , 4B , 5 and 6).

[0048] In the base station 110, uplink signals from the UE 120 and another UE may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236, if applicable, and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to the data receiver 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 to schedule downlink and / or uplink communications of the UE 120. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of the base station 110 may be included in a modem of the base station 110. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of antenna 234, modulator and / or demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., as described with reference to Figure 4A , 4B , 5 and 6).

[0049] As described in greater detail elsewhere herein, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the may perform one or more techniques related to reporting wide bandwidth operation of analog beamforming. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the can execute or guide e.g. Figure 5 Processing 500, Figure 6 600, and / or operations of other processes described herein. Memory 242 and memory 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or 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, when the one or more instructions are executed by one or more processors of base station 110 and / or UE 120 (e.g., directly, or after compilation, conversion and / or interpretation), the one or more instructions may cause the one or more processors, UE 120 and / or base station 110 to perform or direct, for example, Figure 5 Processing 500, Figure 6 In some aspects, executing instructions may include operating instructions, converting instructions, compiling instructions, and / or interpreting instructions in other examples.

[0050] In some aspects, UE 120 may include means for transmitting to a base station an indication of a frequency range outside of an operating bandwidth of the UE based at least in part on the frequency range being compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth; and / or means for communicating with a base station based at least in part on transmitting the indication of a frequency range outside of an operating bandwidth of the UE, among other examples. In some aspects, such means may include in conjunction with Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 252, MIMO detector 256, receive processor 258, and / or the like.

[0051] In some aspects, base station 110 may include means for receiving from a UE an indication of a frequency range outside of an operating bandwidth of the UE, the frequency range being compatible with one or more beam weights associated with an operating bandwidth of the UE; and / or means for communicating with the UE based at least in part on receiving an indication of a frequency range outside of an operating bandwidth of the UE, among other examples. In some aspects, such means may include in conjunction with Figure 2One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and / or the like.

[0052] Although Figure 2 The blocks in the 2000 and 2000 are shown as distinct components, but the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality 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.

[0053] As mentioned above, providing Figure 2 as an example. Other examples may be related to Figure 2 The depictions vary.

[0054] Figure 3 3 is a diagram illustrating an example beamforming architecture 300 that supports determining a sub-dominant cluster in a millimeter wave (mmW) channel according to the present disclosure. In some aspects, the architecture 300 can implement aspects of the wireless network 100. In some aspects, the architecture 300 can 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.

[0055] basically, Figure 3 300 is a diagram of example hardware components of a wireless communication device according to certain aspects of the present disclosure. The components shown may include those that can be used for antenna element selection and / or beamforming for wireless signal transmission. There are many architectures for antenna element selection and implementing phase shifting, only one example of which is shown here. Architecture 300 includes a modem (modulator / demodulator) 302, a digital-to-analog converter (DAC) 304, a first mixer 306, a second mixer 308, and a splitter 310. Architecture 300 also includes a plurality of first amplifiers 312, a plurality of phase shifters 314, a plurality of second amplifiers 316, and an antenna array 318 including a plurality of antenna elements 320.

[0056] Transmission lines or other waveguides, wires, traces, and / or the like are shown connecting the various components to illustrate how signals to be transmitted move between the components. Reference numerals 322, 324, 326, and 328 indicate areas of different types of signal transmission or processing in the structure 300. Specifically, reference numeral 322 indicates an area of ​​digital baseband signal transmission or processing, reference numeral 324 indicates an area of ​​analog baseband signal transmission or processing, reference numeral 326 indicates an area of ​​analog intermediate frequency (IF) signal transmission or processing, and reference numeral 328 indicates an area of ​​analog radio frequency (RF) signal transmission or processing. The architecture also includes a local oscillator A 330, a local oscillator B 332, and a beamforming manager 334 (e.g., a controller, processor, and / or the like).

[0057] Each antenna element 320 may include one or more sub-elements for radiating or receiving RF signals. For example, a single antenna element 320 may include a first sub-element that is cross-polarized with a second sub-element, which may be used to independently transmit cross-polarized signals. The antenna element 320 may include a patch antenna, a dipole antenna, or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or other patterns. The spacing between the antenna elements 320 may be such that the signals with expected wavelengths transmitted separately by the antenna elements 320 can interact or interfere (e.g., form an expected beam). For example, given an expected wavelength or frequency range, the spacing may provide a quarter wavelength, half wavelength, or other fractional wavelength spacing between adjacent antenna elements 320 to allow interaction or interference of signals transmitted by individual antenna elements 320 within the expected range.

[0058] The modem 302 processes and generates digital baseband signals, and can also control the operation of the DAC 304, the first mixer 306 and the second mixer 308, the splitter 310, the first amplifier 312, the phase shifter 314, and / or the second amplifier 316 to transmit signals through one or more or all of the antenna elements 320. The modem 302 can process signals and control operations according to a communication standard (such as the wireless standard discussed herein). The DAC 304 can convert the digital baseband signal (and the signal to be transmitted) received from the modem 302 into an analog baseband signal. The first mixer 306 uses the local oscillator A 330 to convert the analog baseband signal to an analog IF signal in the IF. For example, the first mixer 306 can mix the signal with the oscillation signal generated by the local oscillator A 330 to "move" the baseband analog signal to the IF. In some cases, some processing or filtering (not shown) can occur in the IF. The second mixer 308 uses the local oscillator B 332 to convert the analog IF signal to an analog RF signal. Similar to the first mixer, the second mixer 308 can mix the signal with the oscillating signal generated by the local oscillator B 332 to "move" the IF analog signal to the RF or frequency at which the signal will be transmitted or received. The modem 302 and / or the beamforming manager 334 can adjust the frequency of the local oscillator A 330 and / or the local oscillator B 332 to produce the desired IF and / or RF frequency and to facilitate the processing and transmission of the signal within the desired bandwidth.

[0059] In the illustrated architecture 300, the signal converted by the second mixer 308 is split or replicated into multiple signals by the splitter 310. The splitter 310 in the architecture 300 splits the RF signal into multiple identical or nearly identical RF signals. In other examples, the splitting can occur in any type of signal, including baseband digital, baseband analog, or IF analog signals. Each of these signals can correspond to an antenna element 320, and the signal passes through and is processed by amplifiers 312, 316, phase shifters 314, and / or other elements corresponding to the respective antenna elements 320 to be provided to and transmitted by the corresponding antenna element 320 of the antenna array 318. In one example, the splitter 310 can be an active splitter that is connected to a power source and provides some gain so that the power level of the RF signal flowing out of the splitter 310 is equal to or greater than the signal entering the splitter 310. In another example, where the splitter 310 is a passive splitter that is not connected to a power source, the power level of the RF signal exiting the splitter 310 may be lower than the RF signal entering the splitter 310 .

[0060] After being split by the splitter 310, the generated RF signal can enter an amplifier, such as a first amplifier 312, or a phase shifter 314 corresponding to the antenna element 320. The first amplifier 312 and the second amplifier 316 are shown in dotted lines because one or both of them may not be needed in some aspects. In some aspects, both the first amplifier 312 and the second amplifier 316 exist. In some aspects, neither the first amplifier 312 nor the second amplifier 316 exists. In some aspects, one of the two amplifiers 312, 316 exists, but the other does not exist. For example, if the splitter 310 is an active splitter, the first amplifier 312 may not be used. As a further example, if the phase shifter 314 is an active phase shifter that can provide gain, the second amplifier 316 may not be used.

[0061] The amplifiers 312, 316 can provide a desired positive or negative gain level. Positive gain (positive dB) can be used to increase the amplitude of the signal radiated by a particular antenna element 320. Negative gain (negative dB) can be used to reduce the amplitude of the signal and / or suppress the signal radiation of a particular antenna element. Each amplifier 312, 316 can be independently controlled (e.g., by the modem 302 or the beamforming manager 334) to provide independent control of the gain for each antenna element 320. For example, the modem 302 and / or the beamforming manager 334 can have at least one control line connected to each of the splitter 310, the first amplifier 312, the phase shifter 314, and / or the second amplifier 316, which can be used to configure the gain to provide the desired amount of gain for each component, and thereby provide the desired amount of gain for each antenna element 320.

[0062] The phase shifter 314 can provide a configurable phase shift or phase offset for the corresponding RF signal to be transmitted. The phase shifter 314 can be a passive phase shifter that is not directly connected to the power supply. The passive phase shifter may introduce some insertion loss. The second amplifier 316 can enhance the signal to compensate for the insertion loss. The phase shifter 314 can be an active phase shifter connected to the power supply so that the active phase shifter provides a certain amount of gain or prevents insertion loss. The setting of each phase shifter 314 is independent, meaning that each phase shifter can be set to provide a desired phase shift amount or the same phase shift amount or some other configuration. The modem 302 and / or the beamforming manager 334 can have at least one control line connected to each phase shifter 314, and the control line can be used to configure the phase shifter 314 to provide a desired phase shift amount or a desired phase offset between the antenna elements 320.

[0063] In the illustrated architecture 300, the RF signals received by the antenna elements 320 are provided to one or more first amplifiers 356 to enhance the signal strength. The first amplifiers 356 can be connected to the same antenna array 318 (e.g., for time division duplex (TDD) operation). The first amplifiers 356 can be connected to different antenna arrays 318. The enhanced RF signals are input to one or more of the phase shifters 354 to provide a configurable phase shift or phase offset for the corresponding received RF signals. The phase shifters 354 can be active phase shifters or passive phase shifters. The settings of the phase shifters 354 are independent, meaning that each phase shifter can be set to provide a desired phase shift amount or the same phase shift amount or some other configuration. The modem 302 and / or the beamforming manager 334 can have at least one control line connected to each phase shifter 354, and the control line can be used to configure the phase shifters 354 to provide a desired phase shift amount or phase deviation amount between the antenna elements 320.

[0064] The output of the phase shifter 354 can be input to one or more second amplifiers 352 for signal amplification of the RF signal received after the phase shift. The second amplifier 352 can be configured individually to provide a configured gain amount. The second amplifier 352 can be configured individually to provide a certain amount of gain to ensure that the signals input to the combiner 350 have the same strength. Amplifiers 352 and / or 356 are shown with dotted lines because they may not be necessary in some aspects. In some aspects, amplifiers 352 and amplifiers 356 both exist. In another aspect, amplifiers 352 and amplifiers 356 do not exist. In other aspects, one of amplifiers 352 and 356 exists, but the other does not exist.

[0065] In the illustrated architecture 300, the signals output by the phase shifter 354 (and, when present, by the amplifier 352) are combined in the combiner 350. The combiner 350 in the architecture 300 combines the RF signals into a signal. The combiner 350 may be a passive combiner (e.g., not connected to a power source), which may result in some insertion loss. The combiner 350 may be an active combiner (e.g., connected to a power source), which may result in some signal gain. When the combiner 350 is an active combiner, it may provide a different (e.g., configurable) amount of gain to each input signal so that the input signals have the same strength when combined. When the combiner 350 is an active combiner, the combiner 350 may not require a second amplifier 352, as the active combiner may provide signal amplification.

[0066] The output of combiner 350 is input to mixers 348 and 346. Mixers 348 and 346 typically down-convert the received RF signals using inputs from local oscillators 372 and 370, respectively, to generate intermediate or baseband signals that carry coding information and modulation information. The outputs of mixers 348 and 346 are input to analog-to-digital converter (ADC) 344 for conversion to analog signals. The analog signals output from ADC 344 are input to modem 302 for baseband processing, such as decoding, deinterleaving, and / or the like.

[0067] The architecture 300 is given by way of example only to illustrate an architecture for transmitting and / or receiving signals. In some cases, the architecture 300 and / or each part of the architecture 300 can be repeated multiple times within the architecture to accommodate or provide any number of RF chains, antenna elements, and / or antenna boards. In addition, many alternative architectures are possible and expected. For example, although only a single antenna array 318 is shown, two, three or more antenna arrays may be included, each with one or more of its 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 or different directions of the UE.

[0068] In addition, mixers, splitters, amplifiers, phase shifters, and other components may be located in different signal type areas (e.g., represented by different reference numerals 322, 324, 326, 328) in different implementation structures. For example, in different examples, the signal to be transmitted may be split into multiple signals at the frequency of analog RF, analog IF, analog baseband, or digital baseband. Similarly, amplification and / or phase shifting may also be performed at different frequencies. For example, in some aspects, one or more of the splitter 310, amplifiers 312, 316, or phase shifter 314 may be located between the DAC 304 and the first mixer 306 or between the first mixer 306 and the second mixer 308. In one example, the functions of one or more components may be combined into one component. For example, the phase shifter 314 may perform amplification to include or replace the first and / or second amplifiers 312, 316. By another example, the phase shift may be implemented by the second mixer 308 to eliminate the need for a separate phase shifter 314. This technique is sometimes referred to as local oscillator (LO) phase shifting. In some aspects of this configuration, there may be multiple IF to RF mixers within the second mixer 308 (e.g., for each antenna element chain), and local oscillator B 332 may supply a different local oscillator signal (with a different phase offset) to each IF to RF mixer.

[0069] The modem 302 and / or the beamforming manager 334 can control one or more other components 304 to 372 to select one or more antenna elements 320 and / or form beams for transmitting one or more signals. For example, by controlling the amplitude of one or more corresponding amplifiers, such as the first amplifier 312 and / or the second amplifier 316, the antenna elements 320 can be individually selected or deselected for transmitting a signal (or multiple signals). Beamforming includes generating beams using multiple signals on different antenna elements, where one or more or all of the multiple signals are shifted in phase with each other. The formed beams can carry physical or higher layer reference signals or information. When each of the multiple signals is radiated from a respective antenna element 320, the radiated signals interact, interfere with each other (constructively and destructively), and amplify each other to form a resulting beam. The shape (e.g., amplitude, width, and / or presence of side lobes) and direction (e.g., angle of the beam relative to the surface of the antenna array 318) can be dynamically controlled by modifying the phase shift or phase offset applied by the phase shifter 314 and the amplitude of the multiple signals applied by the amplifiers 312, 316 relative to each other. The beamforming manager 334 can be partially or completely located within one or more other components of the architecture 300. For example, in some aspects, the beamforming manager 334 can be located within the modem 302.

[0070] As mentioned above, providing Figure 3 as an example. Other examples may be related to Figure 3 The differences described are related.

[0071] In some wireless networks, user equipment (e.g., UE 120) can operate in upper mmW frequency bands, such as in (expected) frequency range 4 (FR4) (e.g., from 52.6 GHz to 114.25 GHz). In these frequency bands, UE 120 can accommodate wide bandwidths (e.g., bandwidths above 2 GHz) and large antenna arrays (e.g., 4x4 antenna arrays and / or other large-size antenna arrays).

[0072] A UE 120 operating in an upper mmW frequency band may perform analog / RF beamforming on a large antenna array. Analog beamforming may use an analog beamforming codebook that includes one or more sets of analog beamforming beam weights applicable to a frequency range (e.g., an operating bandwidth). However, the size of the analog beamforming codebook (e.g., the number of analog beamforming beam weight groups, and therefore the frequency range (e.g., operating bandwidth) to which the analog beamforming codebook applies) may be limited. For example, the analog beamforming codebook may be stored in a memory of one or more control circuits (e.g., a radio frequency integrated circuit) that controls one or more antenna elements of an antenna array of the UE 120. The memory of the one or more control circuits may have limited analog beamforming codebook storage memory. In addition, actions of the UE 120, such as initializing cell acquisition, and / or steady-state beam scanning, and other examples, may further impose power, thermal, and / or delay constraints, which may require a smaller analog beamforming codebook. Therefore, when UE 120 operates using a wide bandwidth, the analog beamforming codebook that UE 120 is able to store (e.g., in a memory of one or more control circuits) may not be applicable to the bandwidth of UE 120. This may increase latency and reduce reliability of communications because UE 120 may need to determine and populate a different analog beamforming codebook in the memory of one or more control circuits for communications using frequencies outside the operating bandwidth of the analog beamforming codebook populated (e.g., loaded and / or the like) in the memory of one or more control circuits. For example, this may increase latency because the memory of an RF integrated circuit (RFIC) may be small and the analog beamforming codebook needs to be stored in a slower memory / random access memory (RAM).

[0073] Some techniques and apparatus described herein enable a UE 120 to report a beam coherence bandwidth (e.g., a frequency range outside of an operating bandwidth associated with an analog beamforming codebook currently populated in a memory of one or more control circuits compatible with the analog beamforming codebook) to a base station. In standardization efforts (e.g., 3GPP standards), "beam coherence bandwidth" may also be referred to by other phrases. For example, there may be a frequency range outside of the operating bandwidth that is compatible with the analog beamforming codebook (e.g., one or more sets of analog beam weights included in the analog beamforming codebook may be applied to signals within the frequency range outside of the operating bandwidth without significant array gain degradation). As described herein, "compatibility" may be defined as reusing the same analog beamforming codebook over a larger bandwidth without the need to reload / refill different analog beamforming codebooks when the carrier frequency changes to improve performance. The UE 120 may perform analog beamforming over a beam coherence bandwidth (e.g., the operating bandwidth of the analog beamforming codebook and a frequency range outside of the operating bandwidth) using the analog beamforming codebook currently populated in a memory of one or more control circuits. This may reduce latency and improve reliability of communications because UE 120 may perform analog beamforming over a wider bandwidth without the need to determine and populate different analog beamforming codebooks in memory of one or more control circuits.

[0074] Figure 4A and 4B 4 is a diagram of one or more examples 400 of wide bandwidth operation of report beamforming according to the present disclosure. Figure 4A and 4B As shown, base station 110 and UE 120 can communicate with each other in a wireless network (e.g., wireless network 100). As explained above, UE 120 can operate using a wide bandwidth (e.g., 2 GHz and above) and use a large antenna array (e.g., a 4x4 antenna array, an antenna array including 16 antenna elements, and / or another large-sized antenna array).

[0075] UE 120 may use an analog beamforming codebook including one or more sets of analog beamforming beam weights to perform analog beamforming on an antenna array of UE 120. The one or more sets of analog beamforming beam weights may include phase shifter parameters (e.g., indicating a phase shift or phase offset for a corresponding RF signal), and / or in other examples, amplitude control parameters (e.g., indicating a level of positive or negative gain).

[0076] The analog beamforming codebook may be associated with a frequency range. The frequency range associated with the analog beamforming codebook may be an operating bandwidth of the UE 120. The operating bandwidth may be based at least in part on a memory constraint of the UE 120 (e.g., a memory constraint of one or more control circuits of the UE 120), a geographic location of the UE, a deployment associated with a base station or a transmission reception point (TRP), channel conditions, a communication rate parameter (e.g., indicating a transmit rate and / or a receive rate of one or more communications), a communication reliability parameter (e.g., indicating a required reliability and / or error rate of one or more communications), a power constraint (e.g., indicating a maximum or available power level of the UE 120), a thermal constraint (e.g., indicating a maximum temperature measured by the UE 120), and / or a UE capability constraint reported to a base station or TRP, among other examples.

[0077] In some aspects, UE 120 may perform digital beamforming, and / or hybrid beamforming, among other examples. Hybrid beamforming may include analog beamforming and digital beamforming, and may support multi-beam operation. That is, when performing hybrid beamforming, UE 120 may simultaneously perform analog beamforming and digital beamforming on a received signal. For example, the beamforming architecture (e.g., hardware) of UE 120 may include analog beamforming elements and / or digital beamforming elements. Therefore, the aspects described herein regarding analog beamforming may be applicable to UE 120 that performs analog beamforming, digital beamforming, and / or hybrid beamforming.

[0078] In some aspects, the actual bandwidth of UE 120 (e.g., in wide bandwidth operation) can be different from the operating bandwidth (e.g., the actual bandwidth can be greater than the operating bandwidth). Thus, in some aspects, UE 120 can use multiple analog beamforming codebooks when performing beamforming over the actual bandwidth of UE 120. In some aspects, there can be frequency ranges outside of the operating bandwidth that are compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth.

[0079] As indicated by reference numeral 405, UE 120 may measure parameters of signals received by UE 120 outside of the operating bandwidth. For example, UE 120 may receive signals using frequencies outside of the operating bandwidth. UE 120 may perform analog beamforming or hybrid beamforming on the signals using an analog beamforming codebook associated with the operating bandwidth. UE 120 may measure parameters of the signals after performing analog beamforming or hybrid beamforming using the analog beamforming codebook associated with the operating bandwidth. The measured parameters may include array gain of the signals, and / or a signal-to-noise ratio (SNR) of the signals, among other examples.

[0080] As indicated by reference numeral 410, UE 120 may determine a beam coherence bandwidth (e.g., an operating bandwidth and a frequency range outside of the operating bandwidth that is compatible with one or more beamforming parameters (e.g., multiple sets of analog beam weights included in an analog beamforming codebook associated with the operating bandwidth)). UE 120 may determine the frequency range outside of the operating bandwidth that is compatible with one or more sets of analog beamforming beam weights based at least in part on measuring parameters of signals received by UE 120 outside of the operating bandwidth. In some aspects, UE 120 may determine the beam coherence bandwidth based at least in part on a configuration of UE 120. In some aspects, UE 120 may determine the beam coherence bandwidth based at least in part on an indication received from base station 110 and / or another UE in wireless network 100.

[0081] For example, when UE 120 performs analog beamforming or hybrid beamforming on a signal using an analog beamforming codebook associated with an operating bandwidth, UE 120 may determine the frequency range outside the operating bandwidth based at least in part on a parameter of the signal measured within the frequency range outside the operating bandwidth that does not experience degradation. In some aspects, UE 120 may determine the frequency range outside the operating bandwidth based at least in part on a signal received within the frequency range outside the operating bandwidth that does not experience array gain degradation (e.g., based at least in part on a variance of a measured array gain of the signal when compared to a signal received in the operating bandwidth that satisfies a threshold variance).

[0082] In some aspects, a frequency range outside the operating bandwidth that is compatible with one or more sets of analog beam weights included in an analog beamforming codebook associated with the operating bandwidth may include a frequency range below the operating bandwidth and / or a frequency range above the operating bandwidth. For example, if the operating bandwidth is 1 GHz wide (e.g., from 60 GHz to 61 GHz), the UE 120 may determine that the frequency range outside the operating bandwidth includes frequencies that are 0.5 GHz below the operating bandwidth and frequencies that are 0.25 GHz above the operating bandwidth. In that case, the UE 120 may determine that the beam coherence bandwidth is 1.75 GHz wide (e.g., from 59.5 GHz to 61.25 GHz). In some aspects, the UE 120 may determine that the frequency range outside the operating bandwidth includes frequencies that are 1 GHz above the operating bandwidth. In that case, the UE 120 may determine that the beam coherence bandwidth is 2.0 GHz wide (e.g., from 60 GHz to 62 GHz).

[0083] As indicated by reference numeral 415, UE 120 may transmit an indication of a beam coherence bandwidth to base station 110. The indication of the beam coherence bandwidth may include an indication of an analog beamforming codebook associated with the beam coherence bandwidth. In some aspects, as described above, the indication may be an indication of a frequency range outside of an operating bandwidth determined by UE 120.

[0084] As indicated by reference numeral 420, UE 120 may transmit to base station 110 a request to perform beam training over a beam coherence bandwidth (e.g., over an operating bandwidth and a frequency range outside of the operating bandwidth). In some aspects, the request to perform beam training over the beam coherence bandwidth may be included in the same transmission as the indication of the beam coherence bandwidth. In some aspects, the request to perform beam training over the beam coherence bandwidth may be transmitted after the indication of the beam coherence bandwidth. In some aspects, the request to perform beam training over the beam coherence bandwidth may include a request to perform beam training over a plurality of reference signals.

[0085] As indicated by reference numeral 425, the base station 110 may determine one or more reference signals to be used for beam training over the beam coherence bandwidth. In some aspects, the base station 110 may determine one or more reference signals to be used for beam training over the actual bandwidth of the UE 120 and may determine one or more reference signals to be used over the beam coherence bandwidth. In some aspects, the base station 110 may determine the one or more reference signals to be used for beam training based at least in part on the beam coherence bandwidth, the UE 120 configuration, and / or the antenna array (or subarray) of the UE 120, as well as other examples. In some aspects, the base station 110 may determine a reference signal density (e.g., a number of resource elements per resource block, a frequency domain density, and / or a time domain density) and / or a number of reference signals (e.g., a number of reference signals, a quantitative measure of the reference signals, and / or the like) to be used for beam training over the beam coherence bandwidth, as well as other examples. In some aspects, the one or more reference signals may include one or more sounding reference signals (SRS) for uplink beam training and / or one or more channel state information reference signals (CSI-RS) for downlink beam training.

[0086] As indicated by reference numeral 430, the base station 110 may determine one or more quasi co-location relationships for one or more reference signals. In some aspects, the base station 110 may determine a quasi co-location relationship mapping of a set of reference blocks indicating quasi co-location (QCL) with each reference signal of the one or more reference signals. For example, the base station 110 may determine that the beam coherence bandwidth includes a first set of resource blocks and a second set of resource blocks. The base station 110 may determine that a first reference signal of one or more reference signals to be used for beam training is quasi co-located with the first set of resource blocks. The base station 110 may determine that a second reference signal of one or more reference signals to be used for beam training is quasi co-located with the second set of resource blocks. The UE 120 may use each reference signal to evaluate or determine parameters (e.g., channel quality information and / or similar information) of a physical downlink shared channel (PDSCH) communication received in an associated reference block, based at least in part on determining that the reference signal is quasi co-located with the associated reference block. For example, if the UE 120 receives PDSCH communication in the first set of reference blocks, the UE 120 may determine that the first reference signal may be used to evaluate or determine parameters of the PDSCH communication.

[0087] As indicated by reference numeral 435, the base station 110 may transmit an indication of one or more reference signals to be used for beam training over the beam coherence bandwidth to the UE 120. In some aspects, the indication of the one or more reference signals to be used for beam training may include an indication of one or more QCL relationships of the one or more reference signals, and / or a QCL mapping, among other examples. The indication of the one or more reference signals to be used for beam training may include an indication of one or more SRSs to be used for uplink beam training and / or an indication of one or more CSI-RSs to be used for downlink beam training. In some aspects, the indication of the one or more reference signals to be used for beam training may include an indication of a reference signal density and / or an indication of a number of reference signals.

[0088] As indicated by reference numeral 440, UE 120 may perform beam training using one or more reference signals indicated by base station 110. For example, UE 120 may perform beam training to determine one or more suitable beams for a beam coherence bandwidth. UE 120 may receive one or more CSI-RS (e.g., indicated by base station 110) to determine one or more suitable downlink beams for the beam coherence bandwidth. UE 120 may report beam-specific and / or antenna array or antenna element-specific channel quality information to base station 110 based at least in part on the one or more CSI-RS. UE 120 may transmit one or more SRS (e.g., indicated by base station 110) to base station 110 to determine one or more suitable uplink beams for a selected antenna subarray. Base station 110 may evaluate beam-specific and / or antenna array or antenna element-specific channel quality information based at least in part on the one or more SRS.

[0089] As shown at reference numeral 445, the UE 120 and the base station 110 may communicate using the beam coherence bandwidth and one or more beams determined based at least in part on the beam training performed. In some aspects, the UE 120 and the base station 110 may communicate using an operating frequency in the mmW band. In some aspects, the UE 120 and the base station 110 may communicate using an operating frequency corresponding to an upper mmW band (e.g., from 52.6 GHz to 114.25 GHz) that may be in FR4.

[0090] like Figure 4B As shown at 450, base station 110 may transmit signals to UE 120 using frequencies outside the beam coherence bandwidth. In some aspects, prior to transmitting a signal to UE 120, base station 110 may determine that the signal will be transmitted to UE 120 using frequencies outside the beam coherence bandwidth.

[0091] As indicated by reference numeral 455, the UE 120 may determine that the signal was received using a frequency outside the beam coherence bandwidth. As indicated by reference numeral 460, the UE 120 may determine a new set of analog beamforming beam weights for the signal. For example, the UE 120 may determine that the signal is associated with a different one or more sets of analog beamforming beam weights based at least in part on determining that the signal was received using a frequency outside the beam coherence bandwidth (e.g., using a frequency within a frequency range that is not included within or outside the operating bandwidth). In some aspects, the UE 120 may determine that the signal is associated with a different analog beamforming codebook based at least in part on determining that the signal was received using a frequency outside the beam coherence bandwidth.

[0092] In some aspects, UE 120 may determine a different analog beamforming codebook and / or a different one or more sets of analog beamforming beam weights based at least in part on the frequency used by the signal. In some aspects, the different analog beamforming codebook and / or the different one or more sets of analog beamforming weights may be indicated by base station 110. For example, base station 110 may determine a different analog beamforming codebook and / or a different one or more sets of analog beamforming beam weights based at least in part on determining to transmit the signal to UE 120 using a frequency outside of the beam coherence bandwidth.

[0093] As indicated by reference numeral 465, UE 120 may perform beamforming for the signal using a new set of analog beamforming beam weights. For example, UE 120 may populate a memory of one or more control circuits of UE 120 with different analog beamforming codebooks associated with the frequencies of the signal. UE 120 may perform beamforming for the signal using different analog beamforming codebooks as described above. In this manner, UE 120 may improve communication reliability by ensuring that signal quality is not degraded using analog beamforming beam weights for the signal that would result in degradation of one or more parameters associated with the signal (e.g., array gain and / or another parameter as described above).

[0094] As mentioned above, providing Figure 4A and 4B As one or more examples, other examples may be different from the description related to FIG. 4 .

[0095] Figure 5 is a diagram illustrating an example process 500 performed, for example, by a UE in accordance with the present disclosure. Example process 500 is an example of operations performed by a UE (eg, UE 120) associated with reporting wide bandwidth operations of simulated beamforming.

[0096] like Figure 5 As further shown, in some aspects, process 500 may include: transmitting to a base station an indication of a frequency range outside of an operating bandwidth of the UE based at least in part on the frequency range being compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth (block 510). For example, as described above, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, and / or memory 282) may transmit to a base station an indication of a frequency range outside of an operating bandwidth of the UE based at least in part on the frequency range being compatible with one or more sets of analog beamforming weights associated with the operating bandwidth.

[0097] like Figure 5As further shown, in some aspects, process 500 may include communicating with a base station based at least in part on transmitting an indication of a frequency range outside of an operating bandwidth of the UE (block 520). For example, as described above, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, and / or memory 282) may communicate with a base station based at least in part on transmitting an indication of a frequency range outside of an operating bandwidth of the UE.

[0098] Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below, and / or aspects related to one or more other processes described elsewhere herein.

[0099] In a first aspect, the frequency range outside the working bandwidth of the UE includes at least one of: a frequency range lower than the working bandwidth, a frequency range higher than the working bandwidth, or a combination of the two.

[0100] In a second aspect, either alone or in combination with the first aspect, the operating bandwidth is based at least in part on at least one of: the UE's geographic location, a deployment associated with a base station or a transmission reception point (TRP), channel conditions, communication rate parameters, communication reliability parameters, power constraints, thermal constraints, UE capability constraints reported to the base station or TRP, or a combination of the above.

[0101] In a third aspect, alone or in combination with one or more of the first and second aspects, processing 500 includes measuring the array gain of one or more signals within a frequency range outside the working bandwidth of the UE using one or more sets of analog beamforming weights associated with the working bandwidth; and determining that the frequency range outside the working bandwidth of the UE is compatible with the one or more sets of analog beamforming beam weights associated with the working bandwidth based at least in part on measuring the array gain of one or more signals within the frequency range outside the working bandwidth of the UE.

[0102] In a fourth aspect, alone or in combination with one or more of the first to third aspects, one or more sets of analog beamforming beam weights include at least one of: phase shifter parameters, amplitude control parameters, or a combination of both.

[0103] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, processing 500 includes: transmitting a request for beam training to a base station over a working bandwidth and a frequency range outside the working bandwidth; and receiving an indication of multiple reference signals to be used for beam training from the base station over the working bandwidth and a frequency range outside the working bandwidth.

[0104] In the sixth aspect, alone or in combination with one or more of the first to fifth aspects, the indication of multiple reference signals used for beam training includes an indication that a first reference signal is quasi-co-located with a first group of resource blocks and an indication that a second reference signal is quasi-co-located with a second group of resource blocks, and the resource blocks in the first group of resource blocks and the second group of resource blocks are within a frequency range within or outside the working bandwidth.

[0105] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, processing 500 includes: determining that a signal is received by the UE using a frequency in a frequency range that is not included in the working bandwidth or outside the working bandwidth; and determining, based at least in part on determining that the signal is received using a frequency in a frequency range that is not included in the working bandwidth or outside the working bandwidth, that the signal is associated with a different set or sets of analog beamforming beam weights.

[0106] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, one or more sets of analog beamforming beam weights are included in an analog beamforming codebook.

[0107] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the analog beamforming codebook is populated in a memory of one or more radio frequency integrated circuits of the UE.

[0108] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, communicating with the base station includes communicating with the base station using an operating frequency in a millimeter wave frequency band.

[0109] although Figure 5 Example blocks of process 500 are shown, but in some aspects, process 500 may include additional blocks, fewer blocks, different blocks, or different blocks. Figure 5 5. In addition, or alternatively, two or more blocks of process 500 may be performed in parallel.

[0110] Figure 6 is a diagram illustrating an example process 600 performed, for example, by a base station in accordance with the present disclosure. Example process 600 is an example of a base station (eg, base station 110) performing operations associated with reporting wide bandwidth operations of analog beamforming.

[0111] like Figure 6As shown, in some aspects, process 600 may include receiving, from a UE, an indication of a frequency range outside of an operating bandwidth of the UE that is compatible with one or more beam weights associated with the operating bandwidth of the UE (block 610). For example, as described above, a base station (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242, and / or the like) may receive, from a UE, an indication of a frequency range outside of an operating bandwidth of the UE that is compatible with one or more beam weights associated with the operating bandwidth of the UE.

[0112] like Figure 6 As further shown, in some aspects, process 600 may include communicating with the UE based at least in part on receiving an indication of a frequency range outside of an operating bandwidth of the UE (block 620). For example, as described above, the base station (e.g., using transmit processor 220, receive processor 238, controller / processor 240, and / or memory 242) may communicate with the UE based at least in part on receiving an indication of a frequency range outside of an operating bandwidth of the UE.

[0113] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below, and / or aspects related to one or more other processes described elsewhere herein.

[0114] In a first aspect, the frequency range outside the working bandwidth of the UE includes at least one of: a frequency range lower than the working bandwidth, a frequency range higher than the working bandwidth, or a combination of the two.

[0115] In a second aspect, either alone or in combination with the first aspect, the operating bandwidth of the UE is based at least in part on at least one of: the UE's geographic location, a deployment associated with a base station or TRP, channel conditions, communication rate parameters, communication reliability parameters, power constraints, thermal constraints, UE capability constraints reported to the base station or TRP, or a combination of the above.

[0116] In a third aspect, alone or in combination with one or more of the first and second aspects, the one or more beam weights include at least one of: a phase shifter parameter, an amplitude control parameter, or a combination of both.

[0117] In a fourth aspect, alone or in combination with one or more of the first to third aspects, processing 600 includes: receiving a request for beam training from a UE over a working bandwidth and a frequency range outside the working bandwidth; and transmitting to the UE an indication of multiple reference signals to be used for beam training over the working bandwidth and a frequency range outside the working bandwidth.

[0118] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, processing 600 includes: determining that a first reference signal among multiple reference signals to be used for beam training is quasi-co-located with a first group of resource blocks within a frequency range outside the working bandwidth and the working bandwidth; and determining that a second reference signal among multiple reference signals to be used for beam training is quasi-co-located with a second group of resource blocks within a frequency range outside the working bandwidth and the working bandwidth, wherein resource blocks of the first group of resource blocks and the second group of resource blocks are within a frequency range outside the working bandwidth or the working bandwidth, and wherein the indication of the multiple reference signals to be used for beam training includes an indication that the first reference signal is quasi-co-located with the first group of resource blocks and an indication that the second reference signal is quasi-co-located with the second group of resource blocks.

[0119] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, processing 600 includes: determining that a signal will be sent to the UE using a frequency in a frequency range that is not included in or outside the working bandwidth; and determining, based at least in part on determining that the signal will be sent using a frequency in a frequency range that is not included in or outside the working bandwidth, that the signal is associated with a different set or sets of analog beamforming beam weights.

[0120] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, one or more analog beamforming beam weights are included in an analog beamforming codebook.

[0121] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, communicating with the UE includes communicating with the UE using an operating frequency in a millimeter wave frequency band.

[0122] although Figure 6 Example blocks of process 600 are shown, but in some aspects, process 600 may include additional blocks, fewer blocks, different blocks, or different blocks. Figure 6 6. Additionally, or alternatively, two or more blocks of process 600 may be performed in parallel.

[0123] The following provides an overview of some aspects of the disclosure:

[0124] Aspect 1: A method for wireless communication performed by a user equipment (UE), comprising: sending an indication of a frequency range outside the working bandwidth of the UE to a base station based at least in part on the compatibility of the frequency range outside the working bandwidth of the UE with one or more sets of analog beamforming beam weights associated with the working bandwidth; and communicating with the base station based at least in part on sending the indication of the frequency range outside the working bandwidth of the UE.

[0125] Aspect 2: A method as described in Aspect 1, wherein the frequency range outside the working bandwidth of the UE includes at least one of the following: a frequency range lower than the working bandwidth, a frequency range higher than the working bandwidth, or a combination of the two.

[0126] Aspect 3: Any method described in Aspects 1-2, wherein the operating bandwidth is based at least in part on at least one of: the geographic location of the UE, the deployment associated with the base station or the transmission reception point (TRP), channel conditions, communication rate parameters, communication reliability parameters, power constraints, thermal constraints, UE capability constraints reported to the base station or the TRP, or a combination of the above.

[0127] Aspect 4: Any of the methods described in Aspects 1-3 further includes: using one or more sets of analog beamforming beam weights associated with the working bandwidth to measure the array gain of one or more signals within the frequency range outside the working bandwidth of the UE; and determining that the frequency range outside the working bandwidth of the UE is compatible with the one or more sets of analog beamforming beam weights associated with the working bandwidth based at least in part on measuring the array gain of one or more signals within the frequency range outside the working bandwidth of the UE.

[0128] Aspect 5: The method of any one of Aspects 1-4, wherein the one or more sets of analog beamforming beam weights include at least one of: phase shifter parameters, amplitude control parameters, or a combination of the two.

[0129] Aspect 6: The method of any one of Aspects 1-5 further includes: transmitting a request for beam training to the base station over the working bandwidth and a frequency range outside the working bandwidth; and receiving an indication of multiple reference signals to be used for beam training from the base station over the working bandwidth and a frequency range outside the working bandwidth.

[0130] Aspect 7: A method as described in Aspect 6, wherein the indication of the multiple reference signals used for beam training includes an indication that a first reference signal is quasi-co-located with a first group of resource blocks and an indication that a second reference signal is quasi-co-located with a second group of resource blocks, wherein the resource blocks of the first group of resource blocks and the second group of resource blocks are within a frequency range within the operating bandwidth or outside the operating bandwidth.

[0131] Aspect 8: Any method as described in Aspects 1-7 further includes: determining that the UE will receive a signal using a frequency within a frequency range not included in the working bandwidth or outside the working bandwidth; and determining that the signal is associated with a different set or sets of analog beamforming beam weights based at least in part on determining that the signal is received using a frequency within a frequency range not included in the working bandwidth or outside the working bandwidth.

[0132] Aspect 9: The method as described in any one of aspects 1-8, wherein the one or more sets of analog beamforming beam weights are included in an analog beamforming codebook.

[0133] Aspect 10: The method according to aspect 9, wherein the analog beamforming codebook is populated into a memory of one or more radio frequency integrated circuits of the UE.

[0134] Aspect 11: Any method as described in Aspects 1-10, wherein the communication with the base station comprises: communicating with the base station using an operating frequency in a millimeter wave frequency band.

[0135] Aspect 12: A method of wireless communication performed by a base station, comprising: receiving an indication of a frequency range outside the working bandwidth of a user equipment (UE) from the UE, the frequency range being compatible with one or more beam weights associated with the working bandwidth of the UE; and communicating with the UE based at least in part on the received indication of the frequency range outside the working bandwidth of the UE.

[0136] Aspect 13: A method as described in Aspect 12, wherein the frequency range outside the working bandwidth of the UE includes at least one of the following: a frequency range lower than the working bandwidth, a frequency range higher than the working bandwidth, or a combination of the two.

[0137] Aspect 14: Any method as described in Aspects 12-13, wherein the operating bandwidth of the UE is based at least in part on at least one of: the geographic location of the UE, the deployment associated with the base station or the transmission reception point (TRP), channel conditions, communication rate parameters, communication reliability parameters, power constraints, thermal constraints, UE capability constraints reported to the base station or the TRP, or a combination of the above.

[0138] Aspect 15: A method as described in any of Aspects 12-14, wherein the one or more beam weights include at least one of the following: a phase shifter parameter, an amplitude control parameter, or a combination of the two.

[0139] Aspect 16: Any method as described in Aspects 12-15, further comprising: receiving a request for beam training from the UE over the working bandwidth and a frequency range outside the working bandwidth; and transmitting to the UE an indication of multiple reference signals to be used for the beam training over the working bandwidth and a frequency range outside the working bandwidth.

[0140] Aspect 17: The method as described in Aspect 16 also includes: determining that a first reference signal among the multiple reference signals to be used for beam training is quasi-co-located with a first group of resource blocks in a frequency range outside the working bandwidth and the working bandwidth; and determining that a second reference signal among the multiple reference signals to be used for beam training is quasi-co-located with a second group of resource blocks in a frequency range outside the working bandwidth and the working bandwidth, wherein the resource blocks of the first group of resource blocks and the second group of resource blocks are within the working bandwidth or the frequency range outside the working bandwidth, and wherein the indication of the multiple reference signals to be used for beam training includes an indication that the first reference signal is quasi-co-located with the first group of resource blocks, and an indication that the second reference signal is quasi-co-located with the second group of resource blocks.

[0141] Aspect 18: Any method as described in Aspects 12-17, further comprising: determining that the signal will be sent to the UE using a frequency within a frequency range not included in the working bandwidth or outside the working bandwidth; and determining that the signal is associated with a different set or sets of analog beamforming beam weights based at least in part on determining that the signal will be sent using a frequency within a frequency range not included in the working bandwidth or outside the working bandwidth.

[0142] Aspect 19: The method as described in any one of aspects 12-18, wherein the one or more sets of analog beamforming beam weights are included in an analog beamforming codebook.

[0143] Aspect 20: The method according to any one of Aspects 12-19, wherein the communication with the UE comprises: communicating with the UE using an operating frequency in a millimeter wave frequency band.

[0144] Aspect 21: An apparatus for wireless communication, comprising a processor; a memory coupled to the processor; and instructions, the instructions being stored in the memory and executable by the processor, causing the apparatus to perform one or more methods described in aspects 1-11.

[0145] Aspect 22: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, wherein the memory and the one or more processors are configured to perform one or more methods described in aspects 1-11.

[0146] Aspect 23: An apparatus for wireless communication, comprising at least one component for performing one or more methods described in aspects 1-11.

[0147] Aspect 24: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform one or more methods described in aspects 1-11.

[0148] Aspect 25: A non-transitory computer-readable medium storing an instruction set for wireless communication, wherein the instruction set comprises one or more instructions, which, when executed by one or more processors of a device, causes the device to perform one or more methods described in aspects 1-11.

[0149] Aspect 26: An apparatus for performing wireless communications on a device, comprising a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor, causing the apparatus to perform one or more methods described in aspects 12-20.

[0150] Aspect 27: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, wherein the memory and the one or more processors are configured to perform one or more methods described in aspects 12-20.

[0151] Aspect 28: An apparatus for wireless communication, comprising at least one component for performing one or more methods described in aspects 12-20.

[0152] Aspect 29: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform one or more methods described in aspects 12-20.

[0153] Aspect 30: A non-transitory computer-readable medium storing an instruction set for wireless communication, wherein the instruction set includes one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more methods described in aspects 12-20.

[0154] The above 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 these aspects.

[0155] As used herein, the term "component" is intended to be broadly interpreted as hardware and / or a combination of hardware and software. "Software" should be broadly interpreted as instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, execution threads, programs, and / or functions, as well as other examples, whether referred to as software, firmware, middleware, microcode, hardware description language or other. As used herein, the processor is implemented in a combination of hardware and / or hardware and software. Obviously, the systems and / or methods described herein can be implemented with different forms of hardware and / or a combination of hardware and software. The actual dedicated control hardware or software code that implements these systems and / or methods is not a limitation on various aspects. Therefore, the operation and behavior of the systems and / or methods are described herein without mentioning specific software codes. It should be understood that, based at least in part on the description herein, software and hardware can be designed to implement these systems and / or methods.

[0156] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0157] Even if the specific combination of features is disclosed in the claims and / or the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner that is not specifically recorded in the claims and / or not specifically described in the specification. Although each dependent claim listed above may only directly depend on one claim, the disclosure of various aspects includes the combination of each dependent claim with each other claim in the claim set. As used herein, the phrase referring to "at least one" list of items refers to any combination of these items, including single members. As an example, "at least one: a, b or c" is intended to cover a, b, c, ab, ac, bc and abc, and any combination with multiples of the same element (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc or any other order of a, b and c).

[0158] Unless clearly described, any element, behavior or instruction used here should not be understood as being critical or necessary. In addition, as used herein, the articles "one" and "an" include one or more items and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items related to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "group" and "group" are intended to include one or more items (e.g., a combination of related items, unrelated items, related and unrelated items), and can be used interchangeably with "one or more". If only one item is intended to be used, the phrase "only one" or similar language is used. In addition, as used herein, the terms "have", "have", "have" or similar terms are intended to represent open-ended terms. In addition, unless otherwise clearly stated, the phrase "based on" means "at least partially based on". In addition, as used herein, the term "or" is intended to be included when used in a sequence, and can be used interchangeably with "and / or", unless otherwise clearly stated (e.g., if used in combination with "either" or "only one").

Claims

1. A method of wireless communication performed by a user equipment UE, comprising: Based at least in part on the frequency range outside of an operating bandwidth of the UE being compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth, sending an indication of the frequency range outside of the operating bandwidth of the UE to a base station; Sending a beam training request to the base station over the operating bandwidth and the frequency range outside the operating bandwidth; receiving, from the base station, an indication of a plurality of reference signals to be used for beam training over the operating bandwidth and the frequency range outside the operating bandwidth; as well as Communicating with the base station based at least in part on sending the indication of the frequency range outside the operating bandwidth of the UE.

2. The method of claim 1, wherein the frequency range outside the operating bandwidth of the UE comprises at least one of the following: A frequency range below the stated operating bandwidth, or The frequency range above the stated operating bandwidth.

3. The method of claim 1 , wherein the operating bandwidth is based at least in part on at least one of: the geographical location of the UE, a deployment associated with said base station or transmission reception point TRP, Channel conditions, Communication rate parameters, Communication reliability parameters, Power constraints, Thermal constraints, or UE capability constraints reported to the base station or the TRP.

4. The method of claim 1, further comprising: measuring an array gain of one or more signals within the frequency range outside the operating bandwidth of the UE using the one or more sets of analog beamforming beam weights associated with the operating bandwidth; as well as Based at least in part on measuring the array gain of one or more signals within the frequency range outside the operating bandwidth of the UE, determining that the frequency range outside the operating bandwidth of the UE is compatible with the one or more sets of analog beamforming beam weights associated with the operating bandwidth.

5. The method of claim 1 , wherein the one or more sets of analog beamforming beam weights include at least one of: Phase shifter parameters, or Amplitude control parameter.

6. The method of claim 1, wherein: The indication of multiple reference signals to be used for beam training includes: an indication that a first reference signal is quasi-co-located with a first group of resource blocks and an indication that a second reference signal is quasi-co-located with a second group of resource blocks, wherein resource blocks in the first group of resource blocks and the second group of resource blocks are within the operating bandwidth or within the frequency range outside the operating bandwidth.

7. The method of claim 1, further comprising: determining to receive a signal by the UE using a frequency within the frequency range that is not included in the operating bandwidth or is not included in the frequency range outside the operating bandwidth, wherein the frequency range outside the operating bandwidth is a frequency range compatible with one or more beamforming parameters; and Based at least in part on determining that the signal was received using the frequency within the range of frequencies that is not included within or outside the operating bandwidth, determining that the signal is associated with a different one or more sets of analog beamforming beam weights.

8. The method of claim 1, wherein: The one or more sets of analog beamforming beam weights are included in an analog beamforming codebook.

9. The method of claim 8, wherein: The analog beamforming codebook is populated into a memory of one or more radio frequency integrated circuits of the UE.

10. The method of claim 1, wherein: Communicating with the base station includes: Communicate with the base station using an operating frequency in the millimeter wave frequency band.

11. A user equipment UE for wireless communication, comprising: Memory; as well as One or more processors coupled to the memory, configured to: Based at least in part on the frequency range outside of an operating bandwidth of the UE being compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth, sending an indication of the frequency range outside of the operating bandwidth of the UE to a base station; Sending a beam training request to the base station over the operating bandwidth and the frequency range outside the operating bandwidth; receiving, from the base station, an indication of a plurality of reference signals to be used for beam training over the operating bandwidth and the frequency range outside the operating bandwidth; and Communicating with the base station based at least in part on sending the indication of the frequency range outside the operating bandwidth of the UE.

12. The UE of claim 11, wherein the frequency range outside the operating bandwidth of the UE includes at least one of the following: A frequency range below the stated operating bandwidth, or The frequency range above the stated operating bandwidth.

13. The UE of claim 11, wherein the operating bandwidth is based at least in part on at least one of: the geographical location of the UE, a deployment associated with said base station or transmission reception point TRP, Channel conditions, Communication rate parameters, Communication reliability parameters, Power constraints, Thermal constraints, or UE capability constraints reported to the base station or the TRP.

14. The UE of claim 11, wherein the one or more processors are further configured to: measuring array gain of one or more signals within the frequency range outside the operating bandwidth of the UE using one or more sets of analog beamforming beam weights associated with the operating bandwidth; and Based at least in part on measuring the array gain of one or more signals within the frequency range outside the operating bandwidth of the UE, determining that the frequency range outside the operating bandwidth of the UE is compatible with the one or more sets of analog beamforming beam weights associated with the operating bandwidth.

15. The UE of claim 14, wherein the one or more sets of analog beamforming beam weights include at least one of: Phase shifter parameters, or Amplitude control parameter.

16. The UE according to claim 11, wherein: The indication of multiple reference signals to be used for beam training includes: an indication that a first reference signal is quasi-co-located with a first group of resource blocks and an indication that a second reference signal is quasi-co-located with a second group of resource blocks, wherein resource blocks in the first group of resource blocks and the second group of resource blocks are within the operating bandwidth or within the frequency range outside the operating bandwidth.

17. The UE of claim 11, wherein the one or more processors are further configured to: determining that a signal is received by the UE using a frequency within a frequency range that is not included in the operating bandwidth or is not included in a frequency range outside the operating bandwidth, wherein the frequency range outside the operating bandwidth is a frequency range that is compatible with one or more beamforming parameters; and Based at least in part on determining that the signal was received using the frequency within a range of frequencies not included within or outside the operating bandwidth, determining that the signal is associated with a different one or more sets of analog beamforming beam weights.

18. The UE according to claim 14, wherein: The one or more sets of analog beamforming beam weights are included in an analog beamforming codebook.

19. The UE according to claim 18, wherein: The analog beamforming codebook is populated into a memory of one or more radio frequency integrated circuits of the UE.

20. The UE according to claim 11, wherein: To communicate with the base station, the one or more processors are configured to: Communicate with the base station using an operating frequency in the millimeter wave frequency band.

21. A non-transitory computer readable medium storing a set of instructions for wireless communication, the set of instructions comprising: One or more instructions which, when executed by one or more processors of a user equipment (UE), cause the UE to: Based at least in part on the frequency range outside of an operating bandwidth of the UE being compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth, sending an indication of the frequency range outside of the operating bandwidth of the UE to a base station; Sending a beam training request to the base station over the operating bandwidth and the frequency range outside the operating bandwidth; receiving, from the base station, an indication of a plurality of reference signals to be used for beam training over the operating bandwidth and the frequency range outside the operating bandwidth; as well as Communicating with the base station based at least in part on sending the indication of the frequency range outside the operating bandwidth of the UE.

22. The non-transitory computer readable medium of claim 21, wherein: The one or more instructions further cause the UE to: measuring an array gain of one or more signals within the frequency range outside the operating bandwidth of the UE using the one or more sets of analog beamforming beam weights associated with the operating bandwidth; and Based at least in part on measuring the array gain of one or more signals within the frequency range outside the operating bandwidth of the UE, determining that the frequency range outside the operating bandwidth of the UE is compatible with the one or more sets of analog beamforming beam weights associated with the operating bandwidth.

23. The non-transitory computer readable medium of claim 21, wherein: The one or more instructions further cause the UE to: determining to receive a signal by the UE using a frequency within the frequency range that is not included in the operating bandwidth or is not included in the frequency range outside the operating bandwidth, wherein the frequency range outside the operating bandwidth is a frequency range compatible with one or more beamforming parameters; and Based at least in part on determining that the signal was received using the frequency within the range of frequencies that is not included within or outside the operating bandwidth, determining that the signal is associated with a different one or more sets of analog beamforming beam weights.

24. An apparatus for wireless communication, comprising: means for transmitting to a base station an indication of a frequency range outside an operating bandwidth of the UE based at least in part on the frequency range outside an operating bandwidth of the UE being compatible with one or more sets of analog beamforming beam weights associated with the operating bandwidth; means for sending a request for beam training to said base station over said operating bandwidth and said frequency range outside said operating bandwidth; means for receiving from the base station an indication of a plurality of reference signals to be used for beam training over the operating bandwidth and the frequency range outside the operating bandwidth; as well as Means for communicating with the base station based at least in part on transmitting the indication of the frequency range outside the operating bandwidth of the UE.

25. The apparatus of claim 24, further comprising: means for measuring array gain of one or more signals within the frequency range outside the operating bandwidth of the apparatus using the one or more sets of analog beamforming beam weights associated with the operating bandwidth; as well as Means for determining that the frequency range outside the operating bandwidth of the apparatus is compatible with the one or more sets of analog beamforming beam weights associated with the operating bandwidth based at least in part on measuring the array gain of one or more signals within the frequency range outside the operating bandwidth of the apparatus.

26. The apparatus of claim 24, wherein communicating with the base station is further based on operations performed by: means for determining that a signal is received by the device using a frequency within the frequency range that is not included in the operating bandwidth or that is not included in the operating bandwidth, wherein the frequency range outside the operating bandwidth is a frequency range that is compatible with one or more beamforming parameters; and Means for determining that the signal is associated with a different one or more sets of analog beamforming beam weights based at least in part on determining that the signal was received using the frequency within the range of frequencies that is not included within or outside the operating bandwidth.

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