Default beam operation on a bandwidth part as a function of a default bandwidth configured for a user equipment

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment can receive, from a base station, a frequency configuration indicating at least one default bandwidth associated with a configured bandwidth part (BWP); and communicate with the base station using at least one default beam associated with the at least one default bandwidth of the configured BWP. Numerous 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 / 042,178, filed June 22, 2020, entitled “Default Beam Operation on Bandwidth Part as Function of Default Bandwidth Configured for User Equipment,” and U.S. Non-Provisional Patent Application No. 17 / 302,736, filed May 11, 2021, entitled “Default Beam Operation on Bandwidth Part as Function of Default Bandwidth Configured for User Equipment,” which are hereby expressly incorporated by reference herein. TECHNICAL FIELD

[0003] Aspects of the present disclosure relate generally to wireless communication, and techniques and apparatus for default beam operation on a bandwidth part as a function of default bandwidth configured for a user equipment. BACKGROUND

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems can employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit 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 (3 GPP).

[0005] A wireless network can include a number of base stations (BSs) that can support communication for a number of user equipment (UEs). A UE can communicate with a BS via the downlink and uplink. “Downlink” (or “forward link”) refers to the communication from the BS to the UE, and “uplink” (or “reverse link”) refers to the communication from the UE to the BS. As will be described in more detail

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

[0007] In some aspects, a method of wireless communication performed by a user equipment (UE) includes receiving, from a base station, a frequency configuration indicating at least one default bandwidth associated with a configured bandwidth part (BWP); and communicating with the base station using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0008] In some aspects, a method of wireless communication performed by a base station includes transmitting, to a UE, a frequency configuration indicating at least one default bandwidth associated with a configured BWP; and communicating with the UE using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0009] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to: receive, from a base station, a frequency configuration indicating at least one default bandwidth associated with a configured BWP; and communicate with the base station using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0010] In some aspects, a base station for wireless communication includes a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to: transmit, to a UE, a frequency configuration indicating at least one default bandwidth associated with a configured BWP; and communicate with the UE using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0011] In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the one or more processors to: receive, from a base station, a frequency configuration that indicates at least one default bandwidth associated with a configured BWP; and communicate with the base station using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0012] In some aspects, a non-transitory computer-readable medium storing one or more instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a base station, cause the one or more processors to: transmit, to a UE, a frequency configuration that indicates at least one default bandwidth associated with a configured BWP; and communicate with the UE using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0013] In some aspects, an apparatus for wireless communication includes means for receiving, from a base station, a frequency configuration that indicates at least one default bandwidth associated with a configured BWP; and means for communicating with the base station using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0014] In some aspects, an apparatus for wireless communication includes means for transmitting, to a UE, a frequency configuration that indicates at least one default bandwidth associated with a configured BWP; and means for communicating with the UE using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0015] Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and / or processing system as substantially described herein with reference to and as illustrated by the drawings and specification.

[0016] The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows can be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be readily utilized as bases for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions are not to be regarded as a departure from the scope of the appended claims. The skilled artisan will understand that the features, organizations, and methods of operation of the concepts disclosed herein can be used in a variety of other contexts other than the specific examples described herein. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the features and technical advantages of the present disclosure and, together with the description, serve to explain the principles of the concepts disclosed herein. Each of the drawings can be, for purposes of illustration and description, a plan view of the relevant structure. Nothing in the drawings of the application should be interpreted as a limitation unless otherwise implied by the full written description and demanded by the claims.

[0017] While aspects are described in this disclosure by illustration of some examples, those skilled in the art will understand that these aspects can be practiced in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or packaging arrangements. For example, some aspects can be implemented via integrated chip embodiments, or other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial devices, retail / purchasing devices, medical devices, or artificial intelligence-enabled devices). 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 can include additional components and features for implementation and practice of the claimed and described aspects. For example, transmission and reception of wireless signals can include a number of components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders, or summers). It is intended that aspects described herein can be practiced in a wide variety of different devices, components, systems, distributed arrangements, or end-user devices of varying size, shape, and constitution. BRIEF DESCRIPTION OF DRAWINGS

[0018] For a more complete understanding of the foregoing features of the present disclosure, reference is made to the more particular description of some aspects in simple outline herein which is to be considered in connection with the accompanying drawings. It is to be understood that the drawings are designed solely for purposes of illustration and are not intended to limit the scope of the present disclosure, since the description can admit other equally effective aspects. The same reference numbers in different drawings can identify the same or similar elements.

[0019] Figure 1 is an example diagram of a wireless network, in accordance with the present disclosure.

[0020] Figure 2 is an example diagram of a base station in communication with a UE in a wireless network, in accordance with the present disclosure.

[0021] Figure 3 shows an example diagram associated with default beam operation on a bandwidth part functioning as a default bandwidth configured for a user equipment (UE), in accordance with the present disclosure.

[0022] Figure 4 and Figure 5 shows an example process diagram associated with default beam operation on a bandwidth part functioning as a default bandwidth configured for a UE, in accordance with the present disclosure. DETAILED DESCRIPTION

[0023] Various aspects of the disclosure will be described with reference to the drawings. The various aspects of the disclosure can, however, be implemented in many different forms and should not be construed as limited to the specific aspects presented through the disclosure. Rather, these aspects are provided as illustrative examples of implementing the disclosure. The disclosure is intended to be comprehensive and complete, and to fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein, one skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect disclosed herein, whether implemented independently of or in combination with any other aspect of the disclosure. For example, an apparatus can be implemented or a method can be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover such an apparatus or method which is practiced using other structure, functionality, or structure and functionality in addition to or other than the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein can be embodied by one or more elements of a claim.

[0024] Several aspects of telecommunication systems will now be presented with reference to various apparatus and methods. These apparatus and methods will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as “elements”). These elements can be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.

[0025] It should be noted that while aspects can be described herein using terminology commonly associated with a 5G or NR wireless access technology (RAT), aspects of the present disclosure can be applied to other RATs, such as a 3G RAT, a 4G RAT, and / or a post-5G RAT (e.g., 6G).

[0026] Figure 1 FIG. 1 is a diagram illustrating an example of a wireless network 100, in accordance with the present disclosure. Wireless network 100 can be or can include elements of a 5G (NR) network and / or an LTE network, among other examples. Wireless network 100 can include a number of base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 1 lOd) and other network entities. A base station (BS) is an entity that communicates with user equipment (UE) and can also be referred to as an NR BS, a Node B, a gNB, a 5G node B (NB), an access point, a transmit receive point (TRP), and / or the like. Each BS can provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to a coverage area of a BS and / or a subsystem of a BS that serves the coverage area, depending on the context in which the term is used.

[0027] A BS can provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell can cover a relatively large geographic area (e.g., several kilometers in radius) and can allow unrestricted access by UEs with service subscriptions appropriate for the Figure 1 In the example shown, BS 110a can be a macro BS for a macro cell 102a, BS 110b can be a pico BS for a pico cell 102b, and BS 110c can be a femto BS for a femto cell 102c. A BS can support one or multiple (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “node B,” “5G NB,” and “cell” can be used interchangeably herein.

[0028] In some aspects, a cell can not necessarily be stationary, and the geographic area of the cell can move according to the location of a mobile BS. In some aspects, BSs can be interconnected to one another and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces (e.g., a direct physical connection or a virtual network) using any suitable transport network.

[0029] Wireless network 100 can also include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS). A relay station can also be a UE that can relay transmissions for other UEs. In Figure 1 In the example shown, a relay station 1 lOd can communicate with macro BS 110a and a UE 120d in order to facilitate communications between BS 110a and UE 120d. A relay BS can also be referred to as a relay station, a relay base station, a relay, or the like.

[0030] Wireless network 100 can be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, or the like. These different types of BSs can have different transmit power levels, different coverage areas, and different impacts on interference. For example, macro BSs can have a high transmit power level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs can have relatively lower transmit power levels (e.g., 0.1 to 2 Watts).

[0031] A network controller 130 can couple to a set of BSs and can provide coordination and control for these BSs. Network controller 130 can communicate with the BSs via a backhaul. The BSs can also communicate with one another directly or indirectly via wireless or wireline backhaul.

[0032] UEs 120 (e.g., 120a, 120b, 120c) can be dispersed throughout wireless network 100, and each UE can be stationary or mobile. A UE can also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, etc. A 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 computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device such as a smart watch, smart clothing, smart glasses, a smart wrist band, smart jewelry (e.g., a smart ring, a smart bracelet), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicular component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.

[0033] Some UEs can be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEs include, e.g., robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that can communicate with a base station, another device (e.g., remote device), or some other entity. A wireless node can provide, for example, connectivity for or to a network (e.g., a wide area network such as Internet or a cellular network) via a wired or wireless communication link. Some UEs can be considered Intemet-of-Things (IoT) devices and / or can implement NB-IoT (Narrow Band-Internet of Things). Some UEs can be considered Customer Premises Equipment (CPE). UE 120 can be included inside a housing that houses components of UE 120, such as processor components, memory components, and / or the like. In some aspects, a processor component and a memory component can be coupled together in a housing. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) can be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0034] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a particular RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology, an air interface, and / or the like. Frequencies can also be referred to as carriers, frequency channels, and / or the like. Each frequency can support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0035] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with one another). For example, UE 120 can communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, vehicle-to-everything (V2X) protocols (which can include vehicle-to- vehicle (V2V) protocols or vehicle-to-infrastructure (V2I) protocols), and / or the like. In this case, UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0036] Devices of wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided, based on frequency or wavelength, into various classes, bands, channels, and / or the like. For example, devices of wireless network 100 can communicate using operating bands having a first frequency range (FR1) that can span from 410 MHz to 7.125 GHz and / or can communicate using operating bands having a second frequency range (FR2) that can span from 24.25 GHz to 52.6 GHz. The frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as a “sub-6 GHz” frequency band. Similarly, FR2 is often referred to as a “millimeter wave” frequency band despite being different from the extremely high frequency (EHF) frequency band (30 GHz - 300 GHz) which is also sometimes referred to as a “millimeter wave” frequency band by the International Telecommunications Union (ITU). Thus, unless specifically stated otherwise, the term “sub-6 GHz” or the like, if used herein, can broadly represent frequencies less than 6 GHz, frequencies within FR1, and / or mid-band frequencies (e.g., greater than 7.125 GHz). Similarly, unless specifically stated otherwise, the term “millimeter wave” or the like, if used herein, can broadly represent 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 techniques described herein are applicable to those modified frequencies ranges.

[0037] As indicated above, there is provided Figure 1By way of example only. Other examples can differ from what is described. Figure 1 What is described.

[0038] Figure 2 is a diagram illustrating an example 200 of a base station 110 in communication with a UE 120 in a wireless network 100, in accordance with the present disclosure. Base station 110 can be equipped with T antennas 234a through 234t, and UE 120 can be equipped with R antennas 252a through 252r, where in general T > 1 and R > 1.

[0039] At base station 110, a transmit processor 220 can 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 channel quality indicators (CQIs) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS(s) selected for the UE, and provide data symbols for all UEs. Transmit processor 220 can also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling) and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS)) and synchronization signals (e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 can then perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and / or the reference symbols, if applicable, and can provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 can process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t can be transmitted via T antennas 234a through 234t, respectively.

[0040] At the UE 120, the antennas 252a-252r can receive the downlink signals from the base station 110 and / or other base stations and can provide received signals to the demodulators (DEMODs) 254a-254r, respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples. Each demodulator 254 can further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 can obtain received symbols from all R demodulators 254a-254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data for the UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term “controller / processor” can refer to one or more controllers, one or more processors, or combinations thereof. A channel processor can determine reference signal received power (RSRP) parameters, received signal strength indicator (RSSI) parameters, reference signal received quality (RSRQ) parameters, and / or channel quality indicator (CQI) parameters, among other examples. In some aspects, one or more components of UE 120 can be included in a housing 284.

[0041] The network controller 130 can include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 can include, for example, one or more devices in a core network. The network controller 130 can communicate with the base station 110 via the communication unit 294.

[0042] Antennas (e.g., antennas 234a-234t and / or antennas 252a-252r) can include or be included in one or more antenna panels, antenna groups, antenna element groups, and / or antenna arrays, among other examples. Antenna panels, antenna groups, antenna element groups, and / or antenna arrays can include one or more antenna elements. Antenna panels, antenna groups, antenna element groups, and / or antenna arrays can include co-planar antenna element groups and / or non-coplanar antenna element groups. Antenna panels, antenna groups, antenna element groups, and / or antenna arrays can include antenna elements within a single housing and / or antenna elements within multiple housings. Antenna panels, antenna groups, antenna element groups, and / or antenna arrays can include one or more antenna elements coupled to one or more transmit and / or receive components (e.g., one or more components of a transceiver 288). Figure 2 Antenna panels, antenna groups, antenna element groups, and / or antenna arrays can include one or more antenna elements coupled to one or more transmit and / or receive components (e.g., one or more components of a transceiver 288).

[0043] On the uplink, at UE 120, the transmitting processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reporting including RSRP, RSSI, RSRQ, and / or CQI). The transmitting processor 264 can also generate reference symbols for one or more reference signals. Symbols from the transmitting processor 264 can be pre-encoded (if applicable) by TX MIMO processor 266, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM, CP-OFDM), and transmitted to base station 110. In some aspects, the modulator and demodulator of UE 120 (e.g., MOD / DEMOD 254) can be included in the modem of UE 120. In some aspects, 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 processor (e.g., controller / processor 280) and memory 282 may be used with the transceiver to perform aspects of any of the methods described herein (e.g., as referenced). Figures 3-5 (As described).

[0044] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 for scheduling UE 120 for downlink and / or uplink communication. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of base station 110 may be included in the modem of base station 110. In some aspects, base station 110 includes 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 processor (e.g., controller / processor 240) and memory 242 may be used with the transceiver to perform aspects of any of the methods described herein (e.g., as referenced). Figures 3-5 (As described).

[0045] The controller / processor 240 of base station 110, the controller / processor 280 of UE 120 and / or Figure 2Any other components of the base station 110 and UE 120 can perform one or more techniques associated with default beam operation on a bandwidth part that is a function of a default bandwidth configured for the UE, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or any other component of Figure 2 may perform or direct operations of, for example, Figure 4 the process 400 of FIG. 4, Figure 5 the process 500 of FIG. 5, and / or other processes as described herein. The memories 242 and 282 can store data and program codes for the base station 110 and UE 120, respectively. In some aspects, the memory 242 and / or the memory 282 can include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly, or after compiling, converting, and / or interpreting) by one or more processors of the base station 110 and / or the UE 120, can cause the one or more processors, the UE 120, and / or the base station 110 to perform or direct operations of, for example, Figure 4 the process 400 of FIG. 4, Figure 5 the process 500 of FIG. 5, and / or other processes as described herein. In some aspects, executing instructions can include running the instructions, converting the instructions, compiling the instructions, and / or interpreting the instructions, among other examples.

[0046] In some aspects, the UE 120 can include means for receiving, from a base station, an indication of a frequency configuration of at least one default bandwidth associated with a configured BWP, means for communicating with the base station using at least one default beam associated with the at least one default bandwidth of the configured BWP, and / or the like, and / or similar means. In some aspects, such means can include one or more components of the UE 120 described in connection with Figure 2 , such as the controller / processor 280, the transmit processor 264, the TX MIMO processor 266, the MOD 254, the antenna 252, the DEMOD 254, the MIMO detector 256, the receive processor 258, and / or the like.

[0047] Although Figure 2 the blocks in may be illustrated as distinct components, the functionality performed by the blocks can be implemented in single hardware, software or combined components, or in various combinations of components. For example, the functionality performed by the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 can be performed by the controller / processor 280 or under the control of the controller / processor 280.

[0048] As indicated above, the provision Figure 2 is provided merely as an example. Other examples can provide different configurations of the components described with respect to Figure 2The described content is different.

[0049] An increase in carrier frequencies can enable UEs to use larger antenna arrays and bandwidths. In addition, interest in millimeter wave frequency ranges is increasing because these bandwidths can accommodate larger channel bandwidths than non-millimeter wave bandwidths. A bandwidth part (BWP) is a subset of contiguous common physical resource blocks that can be used to configure an active frequency based on the needs and capabilities of a UE. Within a component carrier (CC), different BWPs can be supported on one frequency band. In typical cases, a UE is expected to only receive and transmit within the frequency range configured for an active BWP. However, in some cases, communications do not need to use the entire BWP (e.g., in the case of incremental downloads, etc.), while in other cases, communications can use a majority or all of a BWP.

[0050] In typical cases, a default beam for a physical downlink shared channel (PDSCH) can be based on the latest active transmission configuration indicator state of the lowest control resource set identifier. The default beam does not depend on the configured bandwidth. For large bandwidths (e.g., millimeter wave regulated bandwidths) and large arrays (e.g., multiple-input multiple-output (MIMO) arrays), a set of beam weights designed for a certain active frequency of a BWP can suffer from significant array gain degradation on that BWP. The same beam weights can also suffer from degradation on different BWPs within the same CC and / or frequency band.

[0051] According to various techniques and aspects described herein, a default beam operation on a BWP can be a function of a default bandwidth configured for a UE. The default bandwidth within a BWP can correspond to an active frequency range. In some aspects, any number of configured BWPs can have an associated default bandwidth. In this way, beam weights can be more closely related to the actual active frequency range, which can reduce degradation and improve signal quality and frequency resource usage efficiency. In some aspects, a UE can suggest a preferred default bandwidth based on use case conditions, UE capabilities, etc. In this way, the default bandwidth can be suitable for certain use cases, capabilities, etc. As a result, frequency resources can be more efficiently allocated, and beam weights can be more efficient, improving signal quality, communication reliability, etc.

[0052] Figure 3 An example 300 related to default beam configuration for MIMO system millimeter wave regulations is shown in accordance with the present disclosure. As shown, a base station 110 and a UE 120 can communicate with one another.

[0053] As shown by reference number 310, the UE 120 can transmit, and the base station 110 can receive, an indication of a suggested at least one default bandwidth. In some aspects, the suggested at least one default bandwidth can be based at least in part on use case conditions, UE capabilities, etc.

[0054] As shown by reference number 320, the base station 110 can transmit and the UE 120 can receive a frequency configuration. In some aspects, the frequency configuration can indicate at least one default bandwidth associated with the configured BWP. In some aspects, the at least one default bandwidth can be a suggested at least one default bandwidth. In some aspects, the UE 120 can refrain from performing beam refinement based at least in part on the at least one default bandwidth being the suggested at least one default bandwidth.

[0055] As shown by reference number 330, the UE 120 can communicate with the base station 110 using at least one default beam associated with the at least one default bandwidth of the configured BWP. In some aspects, the base station 110 can transmit and the UE 120 can receive an active frequency range allocation. The at least one default bandwidth can correspond to the active frequency range allocation.

[0056] In some aspects, the base station 110 can transmit and the UE 120 can receive a configuration of at least one reference signal (RS) to aid the UE 120 in beam refinement. In some aspects, the configuration of the at least one RS can be based at least in part on a bandwidth of the active frequency range allocation satisfying a threshold. In some aspects, the threshold can be a threshold bandwidth difference. For example, the bandwidth of the active frequency range allocation can satisfy the threshold when a difference between the bandwidth and a default bandwidth is greater than or equal to the threshold. In some aspects, the at least one RS can include at least one channel state information RS (CSI-RS) or at least one sounding RS (SRS).

[0057] In some aspects, the base station 110 can transmit and the UE 120 can receive a configuration of at least one quasi co-location (QCL) relationship. In some aspects, the at least one QCL relationship can be based at least in part on the at least one RS. In some aspects, the UE 120 can transmit and the base station 110 can receive an indication of the at least one QCL relationship. In this way, the base station 110 is able to reconfigure the at least one QCL relationship to create a new QCL relationship. In some aspects, the at least one QCL relationship can be based at least in part on the at least one RS.

[0058] According to some of the aspects described above, default beam operation on a BWP can be a function of a default bandwidth configured for the UE. The default bandwidth within the BWP can correspond to an active frequency range. In this way, beam weights can be more closely related to the actual active frequency range, which can reduce degradation and improve signal quality and frequency resource usage efficiency. In some aspects, the UE can suggest a preferred default bandwidth based on use case conditions, UE capabilities, and / or the like. In this way, the default bandwidth can be suitable for certain use cases, capabilities, and / or the like. As a result, frequency resources can be more efficiently allocated and beam weights can be more effective, thereby improving signal quality, communication reliability, and / or the like.

[0059] As indicated above, providing Figure 3 by way of example. Other examples can differ Figure 3 from the described examples.

[0060] Figure 4 FIGURE 19 shows a diagram illustrating an example process 400 performed, for example, by a UE, in accordance with the present disclosure. Example process 400 is an example of operations performed by a UE (e.g., UE 120 and / or the like) associated with default beam configuration for millimeter wave regulation of MIMO systems.

[0061] As Figure 4 indicated at 410, in some aspects, process 400 can include receiving, from a base station, a frequency configuration indicating at least one default bandwidth associated with a configured BWP. For example, as described above, the UE can receive (e.g., using receive processor 258, controller / processor 280, memory 282, and / or the like) from a base station a frequency configuration indicating at least one default bandwidth associated with a configured BWP.

[0062] As Figure 4 further indicated at 420, in some aspects, process 400 can include communicating with the base station using at least one default beam associated with the at least one default bandwidth of the configured BWP. For example, as described above, the UE can communicate (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282, and / or the like) with the base station using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0063] Process 400 can include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0064] In a first aspect, the at least one default bandwidth corresponds to at least one active frequency range allocated by the base station.

[0065] In a second aspect, alone or in combination with the first aspect, process 400 includes transmitting, to the base station, an indication indicating the suggested at least one default bandwidth.

[0066] In a third aspect, alone or in combination with the second aspect, the at least one default bandwidth is the suggested at least one default bandwidth.

[0067] In a fourth aspect, alone or in combination with the third aspect, the UE refrains from performing beam refinement based at least in part on the at least one default bandwidth being the suggested at least one default bandwidth.

[0068] In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, process 400 includes receiving an active frequency range allocation and receiving a configuration of at least one RS to assist the UE in beam refinement, wherein the configuration of the at least one RS is based at least in part on a bandwidth of the active frequency range allocation satisfying a threshold.

[0069] In a sixth aspect, alone or in combination with the fifth aspect, the at least one RS includes at least one CSI-RS or at least one SRS.

[0070] In a seventh aspect, alone or in combination with one or more of the fifth through sixth aspects, process 400 includes receiving a configuration of at least one QCL relationship, wherein the at least one QCL relationship is based at least in part on the at least one RS.

[0071] In an eighth aspect, alone or in combination with one or more of the fifth through seventh aspects, process 400 includes transmitting an indication of at least one QCL relationship, wherein the at least one QCL relationship is based at least in part on the at least one RS.

[0072] Although Figure 4 Although Figure 4 the process 400 is shown including a number of operations, process 400 can include more, fewer, or different operations in various aspects. Additionally or alternatively, two or more operations of process 400 can be performed in parallel.

[0073] Figure 5 FIG. 5 is a diagram illustrating an example process 500 performed by, for example, a base station, in accordance with the present disclosure. Example process 500 is an example of a base station (e.g., base station 110 and / or the like) performing operations associated with default beam configuration for millimeter wave regulation of MIMO systems.

[0074] As Figure 5 shown, in some aspects, process 500 can include transmitting, to a UE, a frequency configuration indicating at least one default bandwidth associated with a configured BWP (block 510). For example, the base station can transmit, to the UE, a frequency configuration indicating at least one default bandwidth associated with a configured BWP (e.g., using transmit processor 220, controller / processor 240, memory 242, and / or the like), as described above.

[0075] As Figure 5As further shown in Fig. 5, in some aspects, process 500 can include communicating with the UE using at least one default beam associated with at least one default bandwidth of the configured BWP (block 520). For example, as described above, the base station can communicate with the UE using at least one default beam associated with at least one default bandwidth of the configured BWP (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242, and / or the like).

[0076] Process 500 can include additional aspects, such as any single aspect or any combination of aspects described below, and / or in connection with one or more other processes described elsewhere herein.

[0077] In a first aspect, the at least one default bandwidth corresponds to at least one active frequency range allocated by the base station.

[0078] In a second aspect, alone or in combination with the first aspect, process 500 includes receiving, from the UE, an indication indicating the suggested at least one default bandwidth.

[0079] In a third aspect, alone or in combination with the second aspect, the at least one default bandwidth is the suggested at least one default bandwidth.

[0080] In a fourth aspect, alone or in combination with one or more of the first through third aspects, process 500 includes transmitting an active frequency range allocation and transmitting a configuration of at least one RS to facilitate beam refinement by the UE, wherein the configuration of the at least one RS is based at least in part on a bandwidth of the active frequency range allocation satisfying a threshold.

[0081] In a fifth aspect, alone or in combination with the fourth aspect, the at least one RS includes at least one CSI-RS or at least one SRS.

[0082] In a sixth aspect, alone or in combination with the fifth aspect, process 500 includes transmitting a configuration of at least one QCL relationship, wherein the at least one QCL relationship is based at least in part on the at least one RS.

[0083] In a seventh aspect, alone or in combination with one or more of the fifth through sixth aspects, process 500 includes receiving an indication of at least one QCL relationship, wherein the at least one QCL relationship is based at least in part on the at least one RS.

[0084] Although Figure 5 Although the example blocks of process 500 are illustrated in a particular order, in some aspects one or more of the blocks can be performed in a different order, or omitted. Figure 5 In some aspects, process 500 can include more blocks than the ones shown, fewer blocks, different blocks, or differently arranged blocks. Additionally or alternatively, two or more of the blocks of process 500 can be performed concurrently.

[0085] The following provides an overview of some aspects of the disclosure:

[0086] Aspect 1 : A method of wireless communication performed by a user equipment (UE), comprising: receiving, from a base station, a frequency configuration indicating at least one default bandwidth associated with a configured bandwidth part (BWP); and communicating with the base station using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0087] Aspect 2: The method of aspect 1, wherein the at least one default bandwidth corresponds to at least one active frequency range allocated by the base station.

[0088] Aspect 3: The method of any of aspects 1 or 2, further comprising transmitting, to the base station, an indication indicating a suggested at least one default bandwidth.

[0089] Aspect 4: The method of aspect 3, wherein the at least one default bandwidth is the suggested at least one default bandwidth.

[0090] Aspect 5: The method of aspect 4, wherein the UE refrains from performing beam refinement based at least in part on the at least one default bandwidth being the suggested at least one default bandwidth.

[0091] Aspect 6: The method of any of aspects 1-5, further comprising: receiving an active frequency range allocation; and receiving a configuration of at least one reference signal (RS) to aid the UE in beam refinement, wherein the configuration of the at least one RS is based at least in part on a bandwidth of the active frequency range allocation satisfying a threshold.

[0092] Aspect 7: The method of aspect 6, wherein the at least one RS comprises at least one channel state information RS or at least one sounding RS.

[0093] Aspect 8: The method of any of aspects 6 or 7, further comprising receiving a configuration of at least one quasi co-location (QCL) relationship, wherein the at least one QCL relationship is based at least in part on the at least one RS.

[0094] Aspect 9: The method of any of aspects 6-8, further comprising transmitting an indication of at least one quasi co-location (QCL) relationship, wherein the at least one QCL relationship is based at least in part on the at least one RS.

[0095] Aspect 10: A method of wireless communication performed by a base station, comprising: transmitting, to a user equipment (UE), a frequency configuration indicating at least one default bandwidth associated with a configured bandwidth part (BWP); and communicating with the UE using at least one default beam associated with the at least one default bandwidth of the configured BWP.

[0096] Aspect 11: The method of aspect 10, wherein the at least one default bandwidth corresponds to at least one active frequency range allocated by the base station.

[0097] Aspect 12: The method of any of aspects 10 or 11, further comprising receiving an indication from the UE, the indication indicating a suggested at least one default bandwidth.

[0098] Aspect 13: The method of aspect 12, wherein the at least one default bandwidth is the suggested at least one default bandwidth.

[0099] Aspect 14: The method of any of aspects 10-13, further comprising: transmitting an active frequency range allocation; and transmitting a configuration of at least one reference signal (RS) to aid the UE in beam refinement, wherein the configuration of the at least one RS is based at least in part on a bandwidth of the active frequency range allocation satisfying a threshold.

[0100] Aspect 15: The method of aspect 14, wherein the at least one RS comprises at least one channel state information RS or at least one sounding RS.

[0101] Aspect 16: The method of aspect 15, further comprising transmitting a configuration of at least one quasi co-location (QCL) relationship, wherein the at least one QCL relationship is based at least in part on the at least one RS.

[0102] Aspect 17: The method of any of aspects 15 or 16, further comprising receiving an indication of at least one quasi co-location (QCL) relationship, wherein the at least one QCL relationship is based at least in part on the at least one RS.

[0103] Aspect 18: An apparatus for wireless communication at a device, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more aspects of aspects 1-9.

[0104] Aspect 19: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method of one or more aspects of aspects 1-9.

[0105] Aspect 20: An apparatus for wireless communication, comprising at least one component for performing the methods of one or more aspects of aspects 1-9.

[0106] Aspect 21: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform the methods of one or more aspects of aspects 1-9.

[0107] Aspect 22: 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 device, cause the device to perform one or more aspects of aspects 1-9.

[0108] Aspect 23: A wireless communication device for a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the device to perform one or more aspects of aspects 10-17.

[0109] Aspect 24: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the methods of one or more aspects of aspects 10-17.

[0110] Aspect 25: An apparatus for wireless communication, comprising at least one component for performing the methods of one or more aspects of aspects 10-17.

[0111] Aspect 26: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by a processor to perform the methods of one or more aspects of Aspects 10-17.

[0112] Aspect 27: 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 device, cause the device to perform one or more aspects of aspects 10-17.

[0113] The foregoing disclosure provides illustrations and descriptions, but is not intended to exhaustively represent the aspects or limit them to the precise forms disclosed. Modifications and variations may be made in light of the foregoing disclosure, or may be derived from practice in each aspect.

[0114] As used herein, the term “component” is intended to be broadly interpreted to encompass hardware and / or a combination of hardware and software. “Software” shall be broadly construed to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and / or functions, among other examples, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. As used herein, a processor is implemented in hardware and / or a combination of hardware and software. It will be apparent that systems and / or methods described herein can be implemented in different forms of hardware and / or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and / or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and / or methods were described herein without reference to specific software code — it being understood that software and hardware can be designed to implement the systems and / or methods based, at least in part, on the description herein.

[0115] As used herein, meeting a threshold can refer to a value that is greater than the threshold, greater than or equal to the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, and the like, depending on the context.

[0116] Although specific combinations of features are listed in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. In fact, many of these features can be combined in ways not specifically stated in the claims and / or disclosed in the specification. Although every annexed claim can directly depend on only one claim, the disclosure of the various aspects includes combinations of each annexed claim with every other claim in the set of claims. As used herein, a phrase referring to “at least one of’ a list of items means any combination of those items, including single members. For example, “at least one of a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination of multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-b, b-b-c, c-c, and c-c-c-c, or any other ordering of a, b, and c).

[0117] No element, act or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used herein, the articles “a” and “an” are intended to include one or more items, and can be used interchangeably with “one or more.” Furthermore, as used herein, the article “the” is intended to include one or more items referenced, and can be used interchangeably with “the one or more.” Also, as used herein, the terms “set” and “group” are intended to include one or more items (for example, related items, unrelated items, or a combination of related and unrelated items), and can be used interchangeably with “one or more.” Where only one item is intended, the phrase “only one” or similar language is used. Also, as used herein, the terms “has,” “have,” “having,” or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise. Also, as used herein, the term “or” is intended to be inclusive when used in a series of items (for example, “a, b, or c” or “a, b, and c”) unless explicitly stated otherwise (for example, if used in the context of “only one of a, b, or c,” then “or” is used in the exclusive sense).

Claims

1. A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors coupled to the memory and configured to: receive, from a base station, a frequency configuration indicating at least one default bandwidth associated with a configured bandwidth part (BWP); receive a configuration of or an indication of at least one quasi co-location (QCL) relationship, the at least one QCL relationship based at least in part on at least one reference signal (RS) configured to assist the UE with beam refinement, the at least one RS configured based at least in part on the at least one default bandwidth, the at least one default bandwidth corresponding to at least one active frequency range allocated by the base station; and communicate with the base station using at least one default beam associated with the at least one default bandwidth. the one or more processors are further configured to transmit, to the base station, an indication indicating a suggested at least one default bandwidth.

2. The UE of claim 1, wherein, the at least one default bandwidth is the suggested at least one default bandwidth.

3. The UE of claim 2, wherein, the UE refrains from performing beam refinement based at least in part on the at least one default bandwidth being the suggested at least one default bandwidth.

4. The UE of claim 3, wherein, the one or more processors are further configured to:

5. The UE of claim 1, wherein, receive an active frequency range allocation; and receive a configuration of the at least one RS, wherein the configuration of the at least one RS is based at least in part on a bandwidth of the active frequency range allocation. the at least one RS comprises at least one channel state information RS or at least one sounding RS.

6. The UE of claim 1, wherein, 7. A base station for wireless communication, comprising: a memory; and one or more processors coupled to the memory and configured to: transmit, for a user equipment (UE), a frequency configuration indicating at least one default bandwidth associated with a configured bandwidth part (BWP); transmit a configuration of or receive an indication of at least one quasi co-location (QCL) relationship, the at least one QCL relationship based at least in part on at least one reference signal (RS) configured to assist the UE with beam refinement, the at least one RS configured based at least in part on the at least one default bandwidth, the at least one default bandwidth corresponding to at least one active frequency range allocated by the base station; and communicate with the UE using at least one default beam associated with the at least one default bandwidth. the one or more processors are further configured to receive, from the UE, an indication indicating a suggested at least one default bandwidth. the at least one default bandwidth is the suggested at least one default bandwidth.

8. The base station of claim 7, wherein, the one or more processors are further configured to:

9. The base station of claim 8, wherein, transmit an active frequency range allocation; and 10. The base station of claim 7, wherein, transmit a configuration of the at least one RS, wherein the configuration of the at least one RS is based at least in part on a bandwidth of the active frequency range allocation. the at least one RS comprises at least one channel state information RS or at least one sounding RS.

12. A method of wireless communication performed by a user equipment (UE), comprising:

11. The base station of claim 7, wherein, ​ ​ receiving a frequency configuration from a base station, the frequency configuration indicating at least one default bandwidth associated with a configured bandwidth part (BWP); receiving a configuration of or receiving an indication of at least one quasi co-location (QCL) relationship, the at least one QCL relationship based at least in part on at least one reference signal (RS) configured to assist the UE in beam refinement, the at least one RS configured based at least in part on the at least one default bandwidth, the at least one default bandwidth corresponding to at least one active frequency range allocated by the base station; and and communicating with the base station using at least one default beam associated with the at least one default bandwidth.

13. The method of claim 12, further comprising transmitting an indication to the base station, the indication indicating a suggested at least one default bandwidth.

14. The method of claim 13, wherein, the at least one default bandwidth is the suggested at least one default bandwidth.

15. The method of claim 14, wherein, the UE refraining from performing beam refinement based at least in part on the at least one default bandwidth being the suggested at least one default bandwidth.

16. The method of claim 12, further comprising: receiving an active frequency range allocation; and receiving a configuration of the at least one RS, wherein the configuration of the at least one RS is based at least in part on a bandwidth of the active frequency range allocation.

17. The method of claim 12, wherein, the at least one RS comprises at least one channel state information RS or at least one sounding RS.

18. A method of wireless communication performed by a base station, comprising: transmitting a frequency configuration for a user equipment (UE), the frequency configuration indicating at least one default bandwidth associated with a configured bandwidth part (BWP); transmitting a configuration of or receiving an indication of at least one quasi co-location (QCL) relationship, the at least one QCL relationship based at least in part on at least one reference signal (RS) configured to assist the UE in beam refinement, the at least one RS configured based at least in part on the at least one default bandwidth, the at least one default bandwidth corresponding to at least one active frequency range allocated by the base station; and and communicating with the UE using at least one default beam associated with the at least one default bandwidth.

19. The method of claim 18, further comprising receiving an indication from the UE indicating a suggested at least one default bandwidth.

20. The method of claim 19, wherein, the at least one default bandwidth is the suggested at least one default bandwidth.

21. The method of claim 18, further comprising: transmitting an active frequency range allocation; and transmitting a configuration of the at least one RS, wherein, the configuration of the at least one RS is based at least in part on a bandwidth of the active frequency range allocation.

22. The method of claim 18, wherein, the at least one RS comprises at least one channel state information RS or at least one sounding RS.

23. An apparatus for wireless communication, comprising means for performing a method of wireless communication of any of claims 12-22.

24. A computer readable medium having recorded thereon one or more computer instructions, which when executed by one or more processors, cause the one or more processors to perform the method of wireless communication according to any one of claims 12-22.

25. A computer program product comprising one or more computer instructions, which when executed by one or more processors, cause the one or more processors to perform the method of wireless communication according to any one of claims 12-22.

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