Beam reporting with frequency resource element granularity

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a plurality of reference signals (RSs) over a frequency bandwidth, each RS of the plurality of RSs being associated with a respective candidate beam of a plurality of candidate beams. The UE may transmit a multi-part beam report including: a first part indicating one or more of a number of beams indicated in the multi-part report or a number of frequency resource units (FRUs) indicated in the multi-part beam report; and a second portion indicating an association of the first beam with a first one of the FRUs and an association of the second beam with a second one of the FRUs based on the measurements of the plurality of RSs. Numerous other aspects are provided.

Description

Technical Field

[0001] Aspects of the present disclosure relate generally to wireless communications, and particularly to techniques and apparatus for beam reporting with frequency resource unit (FRU) granularity. Background Art

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth or transmit power). 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).

[0003] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region or global level. New Radio (NR) (which may be referred to as 5G) is an enhancement set to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink, using CP-OFDM or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) on the uplink, and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate 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.

[0004] In some networks, beamforming can be used to guide communications along a beam path toward a receiving wireless communication device. The transmitting wireless communication device can apply pre-coding to the signal before providing the signal to the antenna element for transmission. Pre-coding provides timing, rotation or weighting to the signal, and when transmitted via the corresponding antenna element, the timing, rotation or weighting manipulates the signal in the form of a directional beam. In some devices, the spacing of the antenna elements is also configured to assist in manipulating the signal. However, the spacing of the antenna elements can manipulate the signal to different angles based on the different frequencies (e.g., carrier frequencies) of the signal. In some networks, the transmitting wireless communication device can use a wide frequency bandwidth to send communications with a signal, wherein the changes in manipulation at the low end of the frequency bandwidth and manipulation at the high end of the frequency bandwidth result in a decrease in the signal strength received at the receiving wireless communication device, which may result in communication errors that consume power, processing, communication and network resources to detect and correct. Additionally or alternatively, communication errors can cause the wireless communication device to limit the size of the frequency bandwidth to reduce the changes at the end of the frequency bandwidth. Summary of the invention

[0005] Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include receiving an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure. The method may include receiving multiple reference signals (RS) over a frequency bandwidth, each RS in the multiple RS being associated with a corresponding candidate beam in multiple candidate beams. The method may include sending a multi-part beam report based on one or more parameters. The multi-part beam report may include a first part that indicates one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of frequency resource units (FRUs) within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs. The multi-part beam report may include a second part that indicates an association of a first beam in multiple candidate beams with a first FRU in the FRUs and an association of a second beam in multiple candidate beams with a second FRU in the FRUs based on measurements of the multiple RSs.

[0006] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include sending an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure. The method may include sending multiple RSs over a frequency bandwidth, each of the multiple RSs being associated with a corresponding candidate beam in multiple candidate beams. The method may include receiving a multi-part beam report based on one or more parameters. The multi-part beam report may include a first part that indicates one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs. The multi-part beam report may include a second part that indicates an association of a first beam in the multiple candidate beams with a first FRU in the FRUs and an association of a second beam in the multiple candidate beams with a second FRU in the FRUs based on measurements of the multiple RSs.

[0007] Some aspects described herein relate to a UE for wireless communication. The user equipment may include at least one processor and at least one memory storing processor-readable code, the at least one memory being communicatively coupled to the at least one processor. The processor-readable code, when executed by the at least one processor, may be configured to cause the user equipment to receive an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure. The processor-readable code, when executed by the at least one processor, may be configured to cause the user equipment to receive multiple RSs on a frequency bandwidth, each RS in the multiple RSs being associated with a corresponding candidate beam in multiple candidate beams. The processor-readable code, when executed by the at least one processor, may be configured to cause the user equipment to send a multi-part beam report based on one or more parameters. The multi-part beam report may include a first part that indicates one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs. The multi-part beam report may include a second part that indicates an association of a first beam of the plurality of candidate beams with a first FRU of the FRUs and an association of a second beam of the plurality of candidate beams with a second FRU of the FRUs based on measurements of the plurality of RSs.

[0008] Some aspects described herein relate to a network node for wireless communication. The network node may include at least one processor and at least one memory communicatively coupled to the at least one processor, the at least one memory storing processor-readable code. The processor-readable code, when executed by the at least one processor, may be configured to cause the network node to send an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure. The processor-readable code, when executed by the at least one processor, may be configured to cause the network node to send multiple RSs over a frequency bandwidth, each RS in the multiple RSs being associated with a corresponding candidate beam in a plurality of candidate beams. The processor-readable code, when executed by the at least one processor, may be configured to cause the network node to receive a multi-part beam report based on one or more parameters. The multi-part beam report may include a first part that indicates one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs. The multi-part beam report may include a second part that indicates an association of a first beam of the plurality of candidate beams with a first FRU of the FRUs and an association of a second beam of the plurality of candidate beams with a second FRU of the FRUs based on measurements of the plurality of RSs.

[0009] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication performed by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to receive an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure. The instruction set, when executed by one or more processors of the UE, may cause the UE to receive multiple RSs over a frequency bandwidth, each of the multiple RSs being associated with a corresponding candidate beam in a plurality of candidate beams. The instruction set, when executed by one or more processors of the UE, may cause the UE to send a multi-part beam report based on one or more parameters. The multi-part beam report may include a first part that indicates one or more of the number of beams of the plurality of candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the plurality of RSs. The multi-part beam report may include a second part that indicates an association of a first beam of the plurality of candidate beams with a first FRU of the FRUs and an association of a second beam of the plurality of candidate beams with a second FRU of the FRUs based on measurements of the plurality of RSs.

[0010] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a network node. The instruction set, when executed by one or more processors of the network node, may cause the network node to send an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure. The instruction set, when executed by one or more processors of the network node, may cause the network node to send multiple RSs over a frequency bandwidth, each RS in the multiple RSs being associated with a corresponding candidate beam in multiple candidate beams. The instruction set, when executed by one or more processors of the network node, may cause the network node to receive a multi-part beam report based on one or more parameters. The multi-part beam report may include a first part that indicates one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs. The multi-part beam report may include a second part that indicates an association of a first beam of the plurality of candidate beams with a first FRU of the FRUs and an association of a second beam of the plurality of candidate beams with a second FRU of the FRUs based on measurements of the plurality of RSs.

[0011] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include a component for receiving an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure. The apparatus may include a component for receiving multiple RSs over a frequency bandwidth, each of the multiple RSs being associated with a corresponding candidate beam in a plurality of candidate beams. The apparatus may include a component for sending a multi-part beam report based on one or more parameters. The multi-part beam report may include a first part that indicates one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs. The multi-part beam report may include a second part that indicates an association of a first beam in a plurality of candidate beams with a first FRU in a FRU and an association of a second beam in a plurality of candidate beams with a second FRU in a FRU based on measurements of the multiple RSs.

[0012] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include a component for sending an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure. The apparatus may include a component for sending multiple RSs over a frequency bandwidth, each RS in the multiple RSs being associated with a corresponding candidate beam in multiple candidate beams. The apparatus may include a component for receiving a multi-part beam report based on one or more parameters. The multi-part beam report may include a first part that indicates one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs. The multi-part beam report may include a second part that indicates an association of a first beam in the multiple candidate beams with a first FRU in the FRUs and an association of a second beam in the multiple candidate beams with a second FRU in the FRUs based on measurements of the multiple RSs.

[0013] Aspects collectively include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network nodes, network entities, wireless communication devices, or processing systems as fully described with reference to the accompanying drawings and the specification and as illustrated in the accompanying drawings and the specification.

[0014] The foregoing has broadly outlined the features and technical advantages of examples according to the present disclosure in an effort to make the following specific embodiments 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 for the same purpose of achieving the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein (both their organization and method of operation) and the associated advantages will be better understood according to the following description. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description, and not as a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to fully understand the above features of the present disclosure, a more specific description of the invention briefly summarized above can be obtained by referring to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings only illustrate some typical aspects of the present disclosure and should not be considered to limit its scope, as the description may allow for other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0016] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0017] Figure 2is a diagram illustrating an example network node communicating with a user equipment (UE) in a wireless network according to the present disclosure.

[0018] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0019] Figure 4 is a diagram illustrating an example of a beam management procedure according to the present disclosure.

[0020] Figure 5 is a diagram illustrating an example beamforming architecture supporting beamforming for millimeter wave (mmW) communications according to the present disclosure.

[0021] Figure 6 is a diagram illustrating an example of a set of beam directions formed using the same precoding vector or weight for signals transmitted on different frequencies according to the present disclosure.

[0022] Figure 7 is a diagram of an example associated with beam reporting with frequency resource unit (FRU) granularity according to the present disclosure.

[0023] Figure 8 is a flow chart illustrating an example process of supporting beam reporting with FRU granularity, for example, performed by a UE according to the present disclosure.

[0024] Fig. 9 is a flow chart illustrating an example process, for example, performed by a network node, to support beam reporting with FRU granularity in accordance with the present disclosure.

[0025] Fig.10 is a diagram of an example apparatus for wireless communications supporting beam reporting with FRU granularity according to the present disclosure.

[0026] Fig.11 is a diagram of an example apparatus for wireless communications supporting beam reporting with FRU granularity according to the present disclosure. DETAILED DESCRIPTION

[0027] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. On the contrary, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. It will be appreciated by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is independently or in combination with any other aspect of the present disclosure. For example, the aspect of any amount set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method that is practiced using other structures, functions, or structures and functions in addition to or different from the various aspects of the disclosure set forth herein. Any aspect of the present disclosure disclosed herein may be embodied by one or more elements of a claim.

[0028] Several aspects of telecommunication systems will now be presented 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, or algorithms (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination of hardware and software. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0029] Various aspects generally relate to generating and sending a beam report indicating corresponding beams of different frequency resource units (FRUs) of a frequency bandwidth for communication between a user equipment (UE) and a network node. Some aspects more specifically relate to indicating corresponding preferred beams for each of a plurality of FRUs for a frequency bandwidth. In some examples, the beam report may be a multi-part beam report. The multi-part beam report may include a first part indicating the number of beams or the number of FRUs indicated in a second part of the report. The first part may have a fixed payload size. The second part may indicate a beam and a FRU pair. For example, the second part may indicate a FRU in a FRU and an association of the FRU with a beam in a beam (e.g., a recommended beam recommended for use with a first FRU). Additionally or alternatively, the second part may indicate a beam and an association of the beam with a FRU.

[0030] Certain aspects of the subject matter described in this disclosure may be implemented to achieve one or more of the following potential advantages. In some examples, the described techniques may be used to reduce communication errors associated with changes in the steering angle of a signal at the end of a frequency bandwidth used for communication. Additionally or alternatively, the described techniques may notify a network node of the best beam on a frequency resource scheduled or allocated for each UE or on each FRU. For example, depending on the extent to which the UE suffers from frequency-dependent changes in the beam steering angle, the network node may use one or more beams for each UE. In addition, when compared to using multiple component carriers for the same frequency bandwidth (e.g., with independent beam selection), the network node and the UE may communicate using the described techniques to improve beam selection with reduced overhead. In some examples, in order to reduce overhead, multi-part beam reports may be used to transmit beam selection, as described herein.

[0031] Figure 1 1 is a diagram illustrating an example of a wireless network according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), one user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), or other network entities. The network node 110 is an entity that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). For another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0032] In some examples, the network node 110 is or includes a network node (such as an RU) that communicates with the UE 120 via a radio access link. In some examples, the network node 110 is or includes a network node (such as a DU) that communicates with other network nodes 110 via a fronthaul link or a midhaul link. In some examples, the network node 110 is or includes a network node (such as a CU) that communicates with other network nodes 110 via a midhaul link or communicates with the core network via a backhaul link. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, or one or more DUs. For example, the network node 110 may include an NR network node, an LTE network node, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul interfaces, midhaul interfaces, or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0033] Each network node 110 may provide communication coverage for a particular geographic area. In the 3rd Generation Partnership Project (3GPP), the term "cell" may refer to a coverage area of ​​a network node 110 or a network node subsystem serving the coverage area, depending on the context in which the term is used.

[0034] The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several thousand meters) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. A network node 110 for a femto cell may be referred to as a femto network node or a home network node.

[0035] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, or relay network nodes. These different types of network nodes 110 may have different transmit power levels, different coverage areas, or different effects on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts). Figure 1 In the example shown in , network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, a cell may not necessarily be stationary, and the geographic area of ​​a cell may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0036] In some aspects, the term "base station" or "network node" may refer to a converged base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with the network node 110). In some aspects, the term "base station" or "network node" may refer to a plurality of devices configured to perform one or more functions. For example, in some distributed systems, each of a number of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeat the execution of at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions but not another base station function. In this way, a single device may include more than one base station.

[0037] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless backhaul communication link or a wired backhaul communication link. In some aspects, the network controller 130 may be a CU or a core network device, or the network controller 130 may include a CU or a core network device.

[0038] In some examples, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile network nodes 110 (e.g., mobile network nodes). In some examples, the network nodes 110 may be interconnected with each other or to one or more other network nodes 110 or network nodes (not shown) in the wireless network 100 using any suitable transport network through various types of backhaul interfaces (such as direct physical connections or virtual networks).

[0039] The wireless network 100 may include one or more relay stations. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a network node 110 or a UE 120) and transmit the data transmissions to a downstream station (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that is capable of relaying transmissions for other UEs 120. Figure 1 In the example shown, network node 110d (e.g., a relay network node) may communicate with network node 110a (e.g., a macro network node) and UE 120d to facilitate communications between network node 110a and UE 120d. A network node 110 that relays communications may be referred to as a relay station, relay network node, or relay.

[0040] UE 120 can be distributed throughout the wireless network 100, and each UE 120 can be stationary or mobile. UE 120 can include, for example, an access terminal, a terminal, a mobile station, or a subscriber unit. UE 120 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 device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node, or any other suitable device configured to communicate via a wireless medium.

[0041] Some UEs 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, or location tags, which may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices, or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, or electrically coupled.

[0042] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may also be referred to as a radio technology or air interface. Frequency may also be referred to as a carrier or frequency channel. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0043] In some examples, 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 network node 110 as an intermediary to communicate with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, or other operations described elsewhere herein as being performed by network node 110.

[0044] The devices of the wireless network 100 may communicate using an electromagnetic spectrum, which may be subdivided into various categories, bands, or channels by frequency or wavelength. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency ranges designated FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). Although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the "below 6 GHz" band in various documents and articles. Similar naming issues sometimes arise in conjunction with FR2, which is often (interchangeably) referred to as the "millimeter wave" band in various documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0045] The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz-24.25GHz). The bands falling within FR3 can inherit FR1 characteristics or FR2 characteristics, and thus the features of FR1 or FR2 can be effectively extended to mid-band frequencies. In addition, currently exploring higher frequency bands to extend 5G NR operation to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designation FR4a or FR4-1 (52.6GHz-71GHz), FR4 (52.6GHz-114.25GHz) and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0046] Considering the above examples, unless otherwise specifically stated, if the term "below 6 GHz" is used herein, it may broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specifically stated, if the term "millimeter wave" is used herein, it may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1 or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0047] In some aspects, the UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may: receive an indication of one or more parameters for transmission of a multi-part beam report associated with a beam management procedure; receive a plurality of reference signals (RSs) over a frequency bandwidth, each RS in the plurality of RSs being associated with a corresponding candidate beam in a plurality of candidate beams; and transmit the multi-part beam report based on the one or more parameters, the multi-part beam report comprising: a first portion indicating one or more of the number of beams of the plurality of candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the plurality of RSs; and a second portion indicating an association of a first beam in the plurality of candidate beams with a first FRU in the FRUs and an association of a second beam in the plurality of candidate beams with a second FRU in the FRUs based on measurements of the plurality of RSs. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0048] In some aspects, the network node may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may: send an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure; send multiple RSs over a frequency bandwidth, each RS in the multiple RSs being associated with a corresponding candidate beam in multiple candidate beams; and receive a multi-part beam report based on the one or more parameters, the multi-part beam report including: a first portion indicating one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs; and a second portion indicating an association of a first beam in the multiple candidate beams with a first FRU in the FRUs and an association of a second beam in the multiple candidate beams with a second FRU in the FRUs based on measurements of the multiple RSs. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0049] Figure 2 is a diagram 200 illustrating an example network node communicating with a UE in a wireless network according to the present disclosure. The network node may correspond to Figure 1 Similarly, the UE may correspond to a network node 110. Figure 1 UE 120. Network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T ≥ 1). UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R ≥ 1). Figure 2The network node 110 depicted in FIG. 1 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include radio frequency components that facilitate direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0050] At the network node 110, the transmit processor 220 may receive data intended for the UE 120 (or a set of UEs 120) from the data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based on one or more channel quality indicators (CQI) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based on the MCS selected for the UE 120 and may provide data symbols to the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may 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)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., pre-coding) on ​​data symbols, control symbols, overhead symbols, or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, or up-convert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a to 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a to 234t).

[0051] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 or other network nodes 110, and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in a housing.

[0052] 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 network node 110 via the communication unit 294.

[0053] One or more antennas (e.g., antennas 234a to 234t or antennas 252a to 252r) may include or may be included in one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays, etc. An antenna panel, antenna group, set of antenna elements, or antenna array may include one or more antenna elements (in a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, or coupled to one or more transmit or receive components (such as Figure 2 One or more antenna elements of one or more components).

[0054] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and sent to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform aspects of any of the methods described herein.

[0055] At the network node 110, uplink signals from the UE 120 or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component of the modem 232, shown as DEMOD), detected by the MIMO detector 236 where applicable, and further processed by the receive processor 238 to obtain decoded data and control information transmitted via the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and provide the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink or uplink communication. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, 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.

[0056] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, or Figure 2Any other component of the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, or the like may perform one or more techniques associated with beam reporting with FRU granularity, as described in more detail elsewhere herein. For example, the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, or the like Figure 2 Any other component of the Figure 8 The process of 800 Fig. 9 900 or other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of network node 110 or UE 120 (e.g., directly executed, or executed after compilation, conversion and / or interpretation), may cause the one or more processors, UE 120, or network node 110 to perform or direct, for example, Figure 8 The process of 800 Fig. 9 The process 900 of , or other processes as described herein, may include operations. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, or interpreting instructions, among others.

[0057] In some aspects, the UE includes: a component for receiving an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure; a component for receiving multiple RSs on a frequency bandwidth, each RS in the multiple RSs being associated with a corresponding candidate beam in multiple candidate beams; or a component for sending a multi-part beam report based on one or more parameters, the multi-part beam report including: a first part, which indicates one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs; and a second part, which indicates an association of a first beam in the multiple candidate beams with a first FRU in the FRUs and an association of a second beam in the multiple candidate beams with a second FRU in the FRUs based on measurements of the multiple RSs. Means for the UE to perform operations described herein may include, for example, one or more of the following: communications manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0058] In some aspects, a network node includes: a component for sending an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure; a component for sending multiple RSs over a frequency bandwidth, each RS in the multiple RSs being associated with a corresponding candidate beam in multiple candidate beams; or a component for receiving a multi-part beam report based on one or more parameters, the multi-part beam report including: a first part, which indicates one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs; and a second part, which indicates an association of a first beam in the multiple candidate beams with a first FRU in the FRUs and an association of a second beam in the multiple candidate beams with a second FRU in the FRUs based on measurements of the multiple RSs. In some aspects, components for the network node to perform operations described herein may include, for example, one or more of the communication manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246.

[0059] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or components in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated or decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) that perform base station functionality can be implemented as an aggregated base station (also called an independent base station or a monolithic base station) or a decomposed base station. A "network entity" or a "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0060] An aggregated base station (e.g., an aggregated network node) may be configured to utilize a radio protocol stack physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) may be configured to utilize a protocol stack physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other network nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), and the like.

[0061] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a decomposed base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A decomposed base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Individual units of a decomposed base station may be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0062] Figure 3 3 is a diagram illustrating an example decomposed base station architecture 300 according to the present disclosure. The decomposed base station architecture 300 may include a CU 310, which may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more decomposed control units (such as a near-RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both). The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via an F1 interface. Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0063] Each of the units (including CU 310, DU 330, RU 340) and the near-RT RIC 325, non-RT RIC 315, and SMO framework 305 may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit may be configured to communicate with one or more of the other units via a transmission medium. In some examples, each of the units may include a wired interface and a wireless interface, the wired interface being configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium, and the wireless interface being configured to receive signals or transmit signals to one or more of the other units via a wireless transmission medium, or both.

[0064] In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, etc. Each control function may be implemented using an interface that is configured to transmit signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some specific implementations, the CU 310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0065] Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers, at least in part, according to a functional split (such as a functional split defined by 3GPP). In some aspects, the one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc. In some aspects, the DU 330 may also host one or more low PHY layers, such as one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming or physical random access channel (PRACH) extraction and filtering, etc. Each layer (which may also be referred to as a module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0066] Each RU 340 may implement lower layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions, or low PHY layer functions (such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc.) based on functional splitting (e.g., functional splitting defined by 3GPP). In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some specific implementations, real-time and non-real-time aspects of communicating with the control plane and user plane of the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture such as a vRAN architecture.

[0067] The SMO framework 305 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RT RIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0068] The non-RT RIC 315 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or in communication with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0069] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0070] Figure 4 4 is a diagram illustrating various examples 400, 410, and 420 of a beam management procedure (eg, a channel state information reference signal (CSI-RS) beam management procedure) according to the present disclosure. Figure 4 As shown, examples 400, 410, and 420 include UE 120 communicating with network node 110 in a wireless network (e.g., wireless network 100). Figure 4 The devices shown are provided as examples, and the wireless network may support communication and beam management between other devices (e.g., between UE 120 and network node 110 or TRP, between mobile terminal node and control node, between IAB child node and IAB parent node, or between scheduled node and scheduling node). In some aspects, UE 120 and network node 110 may be in a connected state (e.g., RRC connected state).

[0071] like Figure 4 As shown in , example 400 may include a network node 110 (e.g., one or more network node devices such as RU, DU, or CU, etc.) and a UE 120 communicating to perform beam management using CSI-RS. Example 400 depicts a first beam management procedure (e.g., P1 CSI-RS beam management). The first beam management procedure may be referred to as a beam selection procedure, an initial beam acquisition procedure, a beam sweeping procedure, a cell search procedure, or a beam search procedure. Figure 4 As shown in example 400, the CSI-RS may be configured to be sent from the network node 110 to the UE 120. The CSI-RS may be configured to be periodic (e.g., using RRC signaling), semi-persistent (e.g., using MAC control element (MAC-CE) signaling), or aperiodic (e.g., using downlink control information (DCI)).

[0072] The first beam management procedure may include the network node 110 performing beam scanning on multiple transmit (Tx) beams. The network node 110 may use each transmit beam used for beam management to transmit a CSI-RS. In order to enable the UE 120 to perform receive (Rx) beam scanning, the network node may use the transmit beam to transmit each CSI-RS multiple times (e.g., with repetitions) within the same RS resource set, so that the UE 120 can sweep the receive beam in multiple transmit instances. For example, if the network node 110 has a set of N transmit beams and the UE 120 has a set of M receive beams, the CSI-RS may be transmitted M times on each of the N transmit beams, so that the UE 120 can receive M instances of the CSI-RS per transmit beam. In other words, for each transmit beam of the network node 110, the UE 120 may perform beam scanning on the receive beam of the UE 120. Thus, the first beam management procedure may enable UE 120 to measure CSI-RS on different transmit beams using different receive beams to support selection of a network node 110 transmit beam / UE 120 receive beam pair. UE 120 may report the measurements to network node 110 to enable network node 110 to select one or more beam pairs for communication between network node 110 and UE 120. Although example 400 has been described in conjunction with CSI-RS, the first beam management procedure may also use synchronization signal blocks (SSBs) to perform beam management in a similar manner as described above.

[0073] like Figure 4 As shown, example 410 may include network node 110 and UE 120 communicating to perform beam management using CSI-RS. Example 410 depicts a second beam management procedure (e.g., P2 CSI-RS beam management). The second beam management procedure may be referred to as a beam refinement procedure, a network node beam refinement procedure, a TRP beam refinement procedure, or a transmit beam refinement procedure. Figure 4As shown in example 410, the CSI-RS may be configured to be sent from the network node 110 to the UE 120. The CSI-RS may be configured to be non-periodic (e.g., using DCI). The second beam management procedure may include the network node 110 performing beam scanning on one or more transmit beams. The one or more transmit beams may be a subset of all transmit beams associated with the network node 110 (e.g., determined based on measurements reported by the UE 120 in conjunction with the first beam management procedure). The network node 110 may use each of the one or more transmit beams for beam management to transmit the CSI-RS. The UE 120 may measure each CSI-RS using a single (e.g., the same) receive beam (e.g., a receive beam determined based on measurements performed in conjunction with the first beam management procedure). The second beam management procedure may enable the network node 110 to select the best transmit beam based on measurements of the CSI-RS reported by the UE 120 (e.g., measured by the UE 120 using a single receive beam).

[0074] like Figure 4 As shown, example 420 depicts a third beam management procedure (e.g., P3 CSI-RS beam management). The third beam management procedure may be referred to as a beam refinement procedure, a UE beam refinement procedure, or a receive beam refinement procedure. Figure 4 As shown in example 420, one or more CSI-RS may be configured to be sent from the network node 110 to the UE 120. The CSI-RS may be configured to be non-periodic (e.g., using DCI). The third beam management process may include the network node 110 sending one or more CSI-RS using a single transmit beam (e.g., a transmit beam determined based on measurements reported by the UE 120 in conjunction with the first beam management procedure or the second beam management procedure). In order to enable the UE 120 to perform receive beam scanning, the network node may use the transmit beam to send the CSI-RS multiple times (e.g., with repetitions) within the same RS resource set, so that the UE 120 can sweep across one or more receive beams in multiple transmission instances. The one or more receive beams may be a subset of all receive beams associated with the UE 120 (e.g., determined based on measurements performed in conjunction with the first beam management procedure or the second beam management procedure). The third beam management procedure may enable the network node 110 or the UE 120 to select the best receive beam based on reported measurements received from the UE 120 (eg, reported measurements of the CSI-RS of the transmit beam using the one or more receive beams).

[0075] In some networks, combined with Figure 4The described beam management procedure may be performed for the entire frequency bandwidth used for communication between the UE 120 and the network node 110. In some networks, the beam management procedure may be performed per component carrier. However, per component carrier beam management may consume power, computational, network, and communication resources.

[0076] Other examples of beam management procedures may be related to Figure 4 The described examples are different. For example, UE 120 and network node 110 may perform the third beam management procedure before performing the second beam management procedure, or UE 120 and network node 110 may perform a similar beam management procedure to select a UE transmit beam.

[0077] Figure 5 is a diagram illustrating an example beamforming architecture 500 that supports beamforming for millimeter wave (mmW) communications according to the present disclosure. In some aspects, the architecture 500 can implement aspects of the wireless network 100. In some aspects, the architecture 500 can be implemented in a transmitting device (e.g., a first wireless communication device, UE, or network node) or a receiving device (e.g., a second wireless communication device, UE, or network node) as described herein.

[0078] In summary, Figure 5 5 is a diagram illustrating example hardware components of a wireless communication device according to certain aspects of the present disclosure. The components illustrated may include those components that may be used for antenna element selection or for beamforming for transmission of wireless signals. There are numerous architectures for antenna element selection and implementing phase shifting, only one example of which is illustrated here. Architecture 500 includes a modem (modulator / demodulator) 502, a digital-to-analog converter (DAC) 504, a first mixer 506, a second mixer 508, and a separator 510. Architecture 500 also includes a plurality of first amplifiers 512, a plurality of phase shifters 514, a plurality of second amplifiers 516, and an antenna array 518 including a plurality of antenna elements 520. In some examples, modem 502 may be combined with Figure 2 One or more of the modem 232 or the modem 254.

[0079] Transmission lines or other waveguides, wires, or traces are shown connecting the various components to illustrate how signals to be transmitted travel between the components. Reference numerals 522, 524, 526, and 528 indicate areas in the architecture 500 where different types of signals travel or are processed. Specifically, reference numeral 522 indicates an area where digital baseband signals travel or are processed, reference numeral 524 indicates an area where analog baseband signals travel or are processed, reference numeral 526 indicates an area where analog intermediate frequency (IF) signals travel or are processed, and reference numeral 528 indicates an area where analog RF signals travel or are processed. The architecture also includes local oscillator A 530, local oscillator B 532, and a controller / processor 534. In some aspects, the controller / processor 534 corresponds to the above in conjunction with Figure 2 The controller / processor 240 of the network node 110 described above or in combination with Figure 2 A controller / controller 280 of the UE 120 is depicted.

[0080] Each antenna element 520 may include one or more sub-elements for radiating or receiving RF signals. For example, a single antenna element 520 may include a first sub-element that is cross-polarized with a second sub-element, which can be used to independently send a cross-polarized signal. The antenna element 520 may include a patch antenna, a dipole antenna, or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern. The spacing between the antenna elements 520 may allow signals with desired wavelengths that are separately sent by the antenna elements 520 to interact or interfere (e.g., to form a desired beam). For example, given a desired wavelength or frequency range, the spacing may provide a quarter wavelength, half wavelength, or other fraction of a wavelength of the spacing between adjacent antenna elements 520 to allow interaction or interference of signals sent by individual antenna elements 520 within the desired range.

[0081] The modem 502 processes and generates a digital baseband signal, and may also control the operation of the DAC 504, the first and second mixers 506, 508, the separator 510, the first amplifier 512, the phase shifter 514, or the second amplifier 516 to transmit the signal via one or more of the antenna elements 520 or all of the antenna elements. The modem 502 may process the signal and control the operation according to a communication standard (such as the wireless standard discussed herein). The DAC 504 may convert the digital baseband signal received from the modem 502 (and to be transmitted) into an analog baseband signal. The first mixer 506 uses the local oscillator A 530 to up-convert the analog baseband signal into an analog IF signal within the IF. For example, the first mixer 506 may mix the signal with an oscillating signal generated by the local oscillator A 530 to "move" the baseband analog signal to the IF. In some cases, some processing or filtering (not shown) may occur at the IF. The second mixer 508 uses local oscillator B 532 to up-convert the analog IF signal to an analog RF signal. Similar to the first mixer, the second mixer 508 can mix the signal with an oscillating signal generated by local oscillator B 532 to "move" the IF analog signal to the RF or frequency at which the signal will be transmitted or received. The modem 502 or controller / processor 534 can adjust the frequency of local oscillator A 530 or local oscillator B 532 so that the desired IF or RF frequency is generated and used to facilitate processing and transmission of signals within the desired bandwidth.

[0082] In the illustrated architecture 500, the signal up-converted by the second mixer 508 is separated or copied into multiple signals by the separator 510. The separator 510 in the architecture 500 separates the RF signal into multiple identical or nearly identical RF signals. In other examples, separation can occur for any type of signal, including baseband signals, baseband analog or IF analog signals. Each of these signals can correspond to an antenna element 520, and the signal propagates through an amplifier 512, 516, a phase shifter 514 or other element corresponding to the corresponding antenna element 520 and is processed by it to provide to the corresponding antenna element 520 of the antenna array 518 and be sent by it. In one example, the separator 510 can be an active separator connected to a power supply and provide some gain so that the RF signal leaving the separator 510 is at a power level equal to or greater than the signal entering the separator 510. In another example, the separator 510 is a passive separator not connected to a power supply, and the RF signal leaving the separator 510 can be at a power level lower than the RF signal entering the separator 510.

[0083] After being separated by separator 510, the resulting RF signal may enter an amplifier, such as first amplifier 512, or a phase shifter 514 corresponding to antenna element 520. The first amplifier 512 and the second amplifier 516 are illustrated with dashed lines because in some aspects, one or both of them may not be necessary. In some aspects, both the first amplifier 512 and the second amplifier 516 exist. In some aspects, both the first amplifier 512 and the second amplifier 516 do not exist. In some aspects, one of the two amplifiers 512, 516 exists, but the other does not exist. By way of example, if separator 510 is an active separator, the first amplifier 512 may not be used. By way of another example, if phase shifter 514 is an active phase shifter that can provide gain, the second amplifier 516 may not be used.

[0084] The amplifiers 512, 516 can provide a desired level of positive or negative gain. Positive gain (positive dB) can be used to increase the amplitude of the signal radiated by a particular antenna element 520. Negative gain (negative dB) can be used to reduce the amplitude of the signal or inhibit the radiation of the signal by a particular antenna element. Each of the amplifiers 512, 516 can be independently controlled (e.g., by the modem 502 or the controller / processor 534) to provide independent control of the gain for each antenna element 520. For example, the modem 502 or the controller / processor 534 can have at least one control line connected to each of the separator 510, the first amplifier 512, the phase shifter 514, or the second amplifier 516, and the at least one control line can be used to configure the gain to provide the desired amount of gain for each component and therefore each antenna element 520.

[0085] The phase shifter 514 can provide a configurable phase shift or phase offset to the corresponding RF signal to be sent. The phase shifter 514 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 516 can enhance the signal to compensate for the insertion loss. The phase shifter 514 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 in the phase shifter 514 is independent, meaning that each phase shifter can be independently set to provide a desired phase shift amount or the same phase shift amount or some other configuration. The modem 502 or the controller / processor 534 can have at least one control line connected to each phase shifter 514, and at least one control line can be used to configure the phase shifter 514 to provide a desired amount of phase shift or phase offset between the antenna elements 520.

[0086] In the illustrated architecture 500, the RF signal received by the antenna element 520 is provided to one or more first amplifiers 556 to enhance the signal strength. The first amplifier 556 can be connected to the same antenna array 518 (for example, for time division duplex (TDD) operation). The first amplifier 556 can be connected to different antenna arrays 518. The enhanced RF signal is input to one or more phase shifters 554 to provide a configurable phase shift or phase offset for the corresponding received RF signal to achieve reception via one or more Rx beams. The phase shifter 554 can be an active phase shifter or a passive phase shifter. The setting of the phase shifter 554 is independent, meaning that each phase shifter can be independently set to provide a desired phase shift amount or the same phase shift amount or some other configuration. The modem 502 or the controller / processor 534 can have at least one control line connected to each phase shifter 554, and at least one control line can be used to configure the phase shifter 554 to provide a desired number of phase shifts or phase offsets between the antenna elements 520, thereby achieving reception via one or more Rx beams.

[0087] The output of phase shifter 554 can be input to one or more second amplifiers 552 for signal amplification of the received RF signal of phase shift. Second amplifier 552 can be configured individually to provide a configured gain amount. Second amplifier 552 can be configured individually to provide a certain gain amount to ensure that the signals input to combiner 550 have the same amplitude. Amplifier 552 or 556 is shown with dotted lines because they may not be necessary in some aspects. In some aspects, both amplifier 552 and amplifier 556 exist. On the other hand, both amplifier 552 and amplifier 556 do not exist. In other aspects, one of amplifiers 552 and 556 exists, but the other does not exist.

[0088] In the illustrated architecture 500, the signals output by the phase shifter 554 (via the amplifier 552 (when present)) are combined in the combiner 550. The combiner 550 in the architecture 500 combines the RF signals into one signal. The combiner 550 can be a passive combiner (e.g., not connected to a power source), which may result in some insertion loss. The combiner 550 can be an active combiner (e.g., connected to a power source), which may result in some signal gain. When the combiner 550 is an active combiner, it can provide a different (e.g., configurable) amount of gain for each input signal so that the input signals have the same amplitude when they are combined. When the combiner 550 is an active combiner, the combiner 550 may not need a second amplifier 552 because the active combiner can provide signal amplification.

[0089] The output of combiner 550 is input to mixers 548 and 546. Mixers 548 and 546 typically down-convert the received RF signal using inputs from local oscillators 572 and 570, respectively, to produce intermediate or baseband signals carrying the encoded and modulated information. The output of mixers 548 and 546 is input to analog-to-digital converter (ADC) 544 for conversion to digital signals. The digital signal output from ADC 544 is input to modem 502 for baseband processing, such as decoding, deinterleaving, or similar operations.

[0090] The architecture 500 is given by way of example only to illustrate an architecture for sending or receiving signals. In some cases, the architecture 500 or each part of the architecture 500 can be repeated multiple times within the architecture to accommodate or provide any number of RF chains, antenna elements, or antenna panels. In addition, numerous replacement architectures are possible and are contemplated. For example, although only a single antenna array 518 is shown, two, three or more antenna arrays may be included, each with its own corresponding amplifier, phase shifter, separator, mixer, DAC, ADC or modem. One or more. For example, a single UE may include two, four or more antenna arrays for sending or receiving signals at different physical locations on the UE or in different directions.

[0091] In addition, mixers, separators, amplifiers, phase shifters, and other components can be located in different signal type areas in different implementation architectures (e.g., represented by different reference numerals in reference numerals 522, 524, 526, 528). For example, in different examples, the separation of the signal to be transmitted into multiple signals can occur at analog RF, analog IF, analog baseband, or digital baseband frequencies. Similarly, amplification or phase shifting can also occur at different frequencies. For example, in some aspects, one or more of separator 510, amplifier 512, 516, or phase shifter 514 can be located between DAC 504 and first mixer 506 or between first mixer 506 and second mixer 508. In one example, the functions of one or more components can be combined into one component. For example, phase shifter 514 can perform amplification to include or replace first amplifier 512 or second amplifier 516. By another example, phase shifting can be implemented by second mixer 508 to eliminate the need for separate phase shifter 514. 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 508 (e.g., for each antenna element chain), and local oscillator B 532 may provide a different local oscillator signal (with a different phase offset) to each IF-to-RF mixer.

[0092] The modem 502 or the controller / processor 534 can control one or more of the other components 504 to 572 to select one or more antenna elements 520 or form a beam for sending one or more signals. For example, the antenna element 520 can be individually selected or deselected for transmission of a signal (or multiple signals) by controlling the amplitude of one or more corresponding amplifiers (e.g., the first amplifier 512 or the second amplifier 516). Beamforming includes generating a beam using multiple signals on different antenna elements, wherein one or more or all of the multiple signals are shifted in phase with each other. The formed beam can carry a physical or higher layer reference signal or information. Since each of the multiple signals is radiated from a corresponding antenna element 520, the radiated signals interact, interfere (constructive and destructive interference) and amplify with each other to form the resulting beam. The shape (such as the amplitude, width, and / or presence of side lobes) and direction (such as the angle of the beam relative to the surface of the antenna array 518) can be dynamically controlled by modifying the phase shift or phase offset imparted by the phase shifter 514 and the amplitude imparted by the amplifiers 512, 516 of the multiple signals relative to each other. The controller / processor 534 can be partially or fully located within one or more other components of the architecture 500. For example, in some aspects, the controller / processor 534 can be located within the modem 502.

[0093] In some wireless communication devices, the configuration of the components of the architecture 500 may affect the steering angle of a signal transmitted via the antenna element 520. Additionally or alternatively, the frequency (e.g., carrier frequency) of the signal may affect the steering angle of the signal based on the configuration of the components of the architecture 500. For example, a signal with a first precoding applied may be steered at a first angle when transmitted using a first frequency, and may be steered at a second angle when transmitted using a second frequency. The difference between the first frequency and the second frequency or the ratio of the first frequency to the second frequency may affect the difference between the first angle and the second angle.

[0094] Figure 6 is a diagram illustrating an example of a set of beam directions 600 formed using the same precoding vector or weight for signals transmitted on different frequencies. Figure 6 As shown in , the beam direction set 600 includes a first subset 600A of beam directions from which the transmitting wireless communication device can select for sending signaling at a first frequency. The beam direction set 600 includes a second subset 600B of beam directions from which the transmitting wireless communication device can select for sending signaling at a second frequency. The beam direction set 600 includes a third subset 600C of beam directions from which the transmitting wireless communication device can select for sending signaling at a third frequency.

[0095] As shown in subset 600A, a first precoding vector may be applied to transmit a signal at a first frequency with a first direction (e.g., orthogonal to the plane of the antenna element used for transmission). A second precoding vector may be applied to transmit a signal at a first frequency with a second direction at a first angle 605A to the first direction. A third precoding vector may be applied to transmit a signal at a first frequency with a third direction at a second angle 605B to the first direction.

[0096] As shown in subset 600B, a second precoding vector may be applied to transmit a signal at a second frequency in a first direction (e.g., orthogonal to the plane of the antenna element used for transmission). A second precoding vector may be applied to transmit a signal at a second frequency in a second direction at a first angle 605B to the first direction. A third precoding vector may be applied to transmit a signal at a second frequency in a third direction at a second angle 605B to the first direction.

[0097] As shown in subset 600C, a third precoding vector may be applied to transmit a signal at a third frequency in a first direction (e.g., orthogonal to the plane of the antenna element used for transmission). A second precoding vector may be applied to transmit a signal at a third frequency in a second direction at a first angle 605C to the first direction. A third precoding vector may be applied to transmit a signal at a third frequency in a third direction at a second angle 605C to the first direction.

[0098] Based on the difference between the first frequency, the second frequency and the third frequency, angles 605A, 605B and 605C can be different from each other. Additionally or alternatively, angles 610A, 610B and 610C can be different from each other. The amount of the difference in angle can be based on the amount of the difference in frequency. For example, a relatively large difference between the first frequency and the third frequency can result in a relatively large difference between the first angle 605A and the first angle 605C. Similarly, a relatively large difference between the first frequency and the second frequency can result in a relatively small difference between the first angle 605A and the first angle 605B.

[0099] In some networks, the difference between angles 610A, 610B, and 610C may be greater than the difference between angles 605A, 605B, and 605C. This may be caused, for example, by steering variations at different frequencies based on the intended steering angle of the beam relative to a plane perpendicular to the antenna elements.

[0100] When a signal is transmitted over a frequency bandwidth spanning a first frequency, a second frequency, and a third frequency, the frequency-dependent beam direction may result in angular blurring of the signal across the frequency bandwidth, as shown in set 600. In this way, a portion of the signal transmitted over the first frequency may travel in a different direction than a portion of the signal transmitted over the second frequency.

[0101] As described herein, beamforming can be used to guide communications along a beam path toward a receiving wireless communication device. A transmitting wireless communication device can apply precoding to a signal before providing the signal to an antenna element for transmission. Precoding provides timing, rotation, or weighting to the signal, and when transmitted via a corresponding antenna element, the timing, rotation, or weighting steers the signal with a directional beam. In some devices, the spacing of the antenna elements is also configured to assist in steering the signal. However, the spacing of the antenna elements can steer the signal to different angles based on the frequency (e.g., carrier frequency) of the signal. In some networks, a transmitting wireless communication device can use a wide frequency bandwidth to send communications with a signal, wherein the changes in manipulation at the low end of the frequency bandwidth and manipulation at the high end of the frequency bandwidth result in a decrease in the signal strength received at the receiving wireless communication device, which may result in communication errors that consume power, processing, communication, and network resources to detect and correct. Additionally or alternatively, communication errors can cause the wireless communication device to limit the size of the frequency bandwidth to reduce the changes at the end of the frequency bandwidth.

[0102] Various aspects generally relate to beam reports indicating beams of different FRUs of a frequency bandwidth for communication between a UE and a network node. Some aspects more specifically relate to multiple FRUs indicating a frequency bandwidth and indicating a preferred beam for each FRU in the multiple FRUs. In some examples, the beam report may be a multi-part beam report. The multi-part beam report may include a first part indicating the number of beams or the number of FRUs indicated in the second part of the report. The first part may have a fixed payload size. The second part may indicate a beam and a FRU pair. For example, the second part may indicate a first FRU in the FRU and an association with the first beam in the beam (e.g., a first recommended beam recommended for use with the first FRU). Additionally or alternatively, the second part may indicate a second FRU of the FRU and an association with the second beam in the beam.

[0103] Certain aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, the described techniques can be used to reduce communication errors associated with changes in the steering angle of signals at the ends of the frequency bandwidth used for communication.

[0104] In some aspects described herein, the UE may be configured (e.g., via a communication protocol or via configuration information) to send beam reports indicating different beams for different FRUs. For example, the UE may be configured to send beam reports indicating different beams for different FRUs based on observing the effect of frequency-dependent beam directions in RSs sent by a network node (referred to as beam squint). The UE may also be configured to send beam reports using a single beam indicated for the entire frequency bandwidth used for communication with the network node (e.g., the entire frequency bandwidth of a component carrier).

[0105] The beam report may include multiple parts (e.g., a multi-level beam report). The first part may have a fixed payload and may indicate the number and granularity of the preferred beams (e.g., an indication of the number of FRUs or the size of the FRUs). The second part may include a variable payload indicating per-beam or per-FRU information.

[0106] In some aspects, the first portion may include an indication of the number of preferred beams (Nbeam). This indication may be used bits. The first part may include the number of FRUs (NFRU). This indication may be used bits. The values ​​of maxNrofBeam and maxNrofFRU may be configured by the network node or within the communication protocol. The network node may indicate maxNrofBeam to limit the number of preferred beams that may be reported by the UE, where the limit is based on the capabilities of the network node (e.g., hardware limitations, the number of transmit antenna panels, the number of receive antenna panels, or power constraints, etc.). The value of maxNrofFRU may be based on the bandwidth size or carrier frequency used for communication.

[0107] In some aspects, the second portion may include a beam indication. The beam indication may include a per-beam indication that maps each beam to a corresponding FRU. Additionally or alternatively, the indication may include a per-FRU indication that maps each FRU to a corresponding beam. In some aspects, whether the beam indication includes a per-beam indication or a per-FRU indication may be configured by the network node or in the communication protocol.

[0108] In some aspects, the second portion may include a signal strength indication. For example, the signal strength indication may indicate the RSRP of the RS received via the reported beam or FRU. The signal strength indication may include a per-beam indication indicating the signal strength of the corresponding beam. Additionally or alternatively, the indication may include a per-FRU indication indicating the signal strength of the corresponding FRU. In some aspects, whether the signal strength indication includes a per-beam indication or a per-FRU indication may be configured by the network node or in the communication protocol.

[0109] In some examples, the UE may receive RS over a frequency bandwidth including 48 physical resource blocks (PRBs). The PRBs may be divided into 12 subbands, each including 4 PRBs. The UE may measure the RS to sense three RSs (e.g., repetitions of 3 RSs) transmitted using three different beams (e.g., one RS in each of the three different beams). Within a configured component carrier including all 12 subbands, the UE may have a beam preference, such as a preference for a first beam (represented by beam A) for subbands 1-4, a preference for a second beam (represented by beam B) for subbands 5-12.

[0110] The network node may configure the UE as maxNrofBeam = 2, maxNrofFRU = 4. Additionally or alternatively, the network node may configure the UE as maxNrofBeam = 2, NrofFRU = 3, or the network node may configure the UE as NrofBeam = 2, maxNrofFRU = 4, and so on.

[0111] The beam report may include a first part indicating (e.g., using 3 bits) Nbeam=2 (1 bit) and NFRU=3 (2 bits). The beam report may include a second part including (e.g., as a per-beam indication) a beam indication [1,0,0] for a first beam (indicating beam A for FRU1) and a beam indication [0,1,1] for a second beam (indicating beam B for FRU2 and FRU3). The second part may indicate the layer 1 RSRP [RSRP-A, RSRP-B] for the first beam (beam A) and the second beam (beam B).

[0112] Based on reporting beams for different FRUs, the UE can reduce communication errors that might otherwise be caused by beam squint effects by allowing the UE to select preferred beams for different portions of the frequency bandwidth used for communication. Additionally or alternatively, the UE can save overhead that might otherwise be used to perform beam management for multiple component carriers that might otherwise be configured to span the frequency bandwidth.

[0113] Figure 7 is a diagram of an example 700 associated with beam reporting with FRU granularity according to the present disclosure. Figure 7 As shown, a network node (e.g., network node 110, CU, DU, or RU) may communicate with a UE (e.g., UE 120). In some aspects, the network node and the UE may be part of a wireless network (e.g., wireless network 100). The UE and the network node may be in Figure 7 The illustrated operations are preceded by establishing a wireless connection.In some aspects, the UE and the network node may communicate using a frequency bandwidth in the sub-terahertz (sub-THz) frequency range.

[0114] In a first operation 705, the network node may send configuration information and the UE may receive the configuration information. In some aspects, the UE may receive the configuration information via one or more of RRC signaling, one or more MAC-CEs or DCI, etc. In some aspects, the configuration information may include an indication of one or more configuration parameters for the UE to select (e.g., known to the UE or previously indicated by the network node or other network device) or explicit configuration information for the UE to configure the UE, etc.

[0115] In some aspects, the configuration information may indicate that the UE will send an indication of supporting FRU-based beam reporting. The UE may configure itself based on the configuration information. In some aspects, the UE may be configured to perform one or more operations described herein based on the configuration information.

[0116] In a second operation 710, the UE may send, and the network node may receive, an indication of supporting FRU-based beam reporting. For example, the UE may support FRU-based beam reporting based on available computing resources, available communication resources (e.g., antenna ports or antenna panels), or available power resources (e.g., available power to perform computing or receiving operations).

[0117] In a third operation 715, the UE may receive and the network node may send an indication of one or more parameters for sending beam reports. For example, the one or more parameters may indicate that the UE is to send FRU-based beam reports. In some aspects, the one or more parameters may indicate that the UE is to send beam reports with a per-FRU indication of the beam or a per-beam indication of the FRU. In some aspects, the one or more parameters may indicate that the UE is to send beam reports with a per-FRU indication of signal strength or a per-beam indication of signal strength.

[0118] In some aspects, one or more parameters may indicate a format for sending a beam report. For example, one or more parameters may indicate that the beam report is to be sent as a multi-part beam report (e.g., a multi-level report). In some aspects, the format may include an indication of the location or size of an information element within the multi-part report.

[0119] In some aspects, one or more parameters may indicate the number of beams to be indicated in a multi-partial beam report or the number of FRUs to be indicated in a multi-partial beam report. In some aspects, one or more parameters may indicate the maximum number of beams to be indicated in a multi-partial beam report or the maximum number of FRUs to be indicated in a multi-partial beam report.

[0120] In some aspects, the network node may select one or more parameters based on capabilities of the network node, power resources of the network node, size of the frequency bandwidth or carrier frequency of the frequency bandwidth, etc. In some aspects, the network node may select one or more parameters based on the ability of the UE to perform per-FRU beam reporting.

[0121] In a fourth operation 720, the UE may receive and the network node may send the RS. In some aspects, the RS may include a CSI-RS or an SSB.

[0122] The network node may send one RS for each transmit beam of the network node (e.g., including repetitions). In some aspects, the network node may send the RS as a beam scanning operation on the available beams. The UE may measure each RS using multiple beams (e.g., to determine signal strength) to determine a preferred beam (e.g., a network node transmit beam) for the network node to use to transmit to the UE using the frequency bandwidth. The UE may also determine a preferred UE receive beam to pair with the preferred beam.

[0123] In a fifth operation 725, the UE may determine the FRUs for reporting. For example, the UE may determine the number of FRUs to report. The number of FRUs to report may be based on one or more parameters indicated in conjunction with the third operation 715 or changes in the signal strength of the RS received at different parts of the frequency bandwidth. In some aspects, when using frequencies within the frequency bandwidth, the number of FRUs or the number of beams may be based on a frequency-dependent beam direction shift for the pre-coding vector.

[0124] For example, the UE may determine to report a relatively high number of FRUs based on a relatively large change in the signal strength of the RS as measured at the high end of the frequency bandwidth and the low end of the frequency bandwidth. Additionally or alternatively, the UE may determine to report the number of FRUs based on the number of beams with the highest signal strength at one or more ranges of the frequency bandwidth. For example, if a first beam has the highest signal strength at a first range of the frequency bandwidth and a second beam has the highest signal strength at a second range of the frequency bandwidth, the UE may determine to report two or more FRUs (e.g., based on where the change in the beam with the highest signal strength occurs).

[0125] In some aspects, each of the FRUs may have an equal bandwidth size. For example, each of the FRUs may include the same number of PRBs. In some aspects, if the number of PRBs prohibits an equal number of PRBs in each FRU, then the configuration or communication protocol may indicate which FRUs will include a higher or lower number of PRBs.

[0126] In a sixth operation 730, the UE may identify a preferred beam per FRU. For example, based on identifying the FRUs, the UE may identify a preferred beam for each of the identified FRUs based on measured signal strengths of RSs within the FRUs. In some aspects, the UE may be limited by a maximum number of beams that may be reported, and the UE may report a beam that does not have the highest signal strength for each FRU, but may instead report a beam that results in the highest combined signal strength over all FRUs for each of the FRUs.

[0127] In a seventh operation 735, the UE may send and the network node may receive a beam report indicating an association of the FRU with the corresponding beam. In some aspects, the beam report may indicate an association between the beam and the FRU based on measurements of the RS. For example, the beam report may indicate an association of a first beam with a first FRU in the FRUs and an association of a second beam with a second FRU in the FRUs based on measurements of multiple RSs.

[0128] In some examples, a beam report may include a multi-part beam report. The multi-part beam report may include a first part that indicates one or more of the number of beams indicated in the multi-part report or the number of FRUs indicated in the multi-part beam report based on measurements of multiple RSs. The first part may have a fixed payload size. The multi-part beam report may include a second part that indicates an association of a beam with a FRU based on measurements of multiple RSs. The second part may have a payload size based on the first part. For example, the first part may indicate the payload size of the second part based on an indication of the number of beams reported or the number of FRUs reported.

[0129] Based on reporting beams for different FRUs, the UE can reduce communication errors that might otherwise be caused by beam squint effects by allowing the UE to select preferred beams for different portions of the frequency bandwidth used for communication. Additionally or alternatively, the UE can save overhead that might otherwise be used to perform beam management for multiple component carriers that might otherwise be configured to span the frequency bandwidth.

[0130] Figure 8 is a flow chart illustrating an example process 800 performed, for example, by a UE, to support beam reporting with FRU granularity in accordance with the present disclosure. The example process 800 is an example of operations in which a UE (eg, UE 120) performs operations associated with beam reporting with FRU granularity.

[0131] like Figure 8 As shown, in some aspects, process 800 may include receiving an indication of one or more parameters for transmission of a multi-part beam report associated with a beam management procedure (block 810). For example, a UE (such as by using Fig.10 The communication manager 140 or receiving component 1002 depicted in FIG. 1 may receive an indication of one or more parameters for transmission of a multi-part beam report associated with a beam management procedure, as described above.

[0132] like Figure 8As further shown in FIG. 8 , in some aspects, process 800 may include receiving a plurality of RSs over a frequency bandwidth, each RS in the plurality of RSs being associated with a respective candidate beam in a plurality of candidate beams (block 820). For example, a UE (such as by using Fig.10 The communication manager 140 or receiving component 1002 depicted in can receive multiple RSs over a frequency bandwidth, each RS in the multiple RSs being associated with a corresponding candidate beam in a plurality of candidate beams, as described above.

[0133] like Figure 8 As further shown in FIG. 8 , in some aspects, process 800 may include sending a multi-part beam report based on one or more parameters (block 830). For example, a UE (such as by using Fig.10 The communication manager 140 or the sending component 1004 depicted in the figure can send a multi-part beam report based on one or more parameters. The multi-part beam report can include: a first part, which indicates one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on the measurement of the multiple RSs; and a second part, which indicates the association of the first beam of the multiple candidate beams with the first FRU of the FRUs and the association of the second beam of the multiple candidate beams with the second FRU of the FRUs based on the measurement of the multiple RSs, as described above.

[0134] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below or in combination with one or more other processes described elsewhere herein.

[0135] In a first additional aspect, the plurality of RSs include one or more of CSI-RS or SSBs.

[0136] In a second additional aspect alone or in combination with the first aspect, the first portion has a fixed payload size, and wherein the second portion has a payload size based on the first portion.

[0137] In a third additional aspect alone or in combination with one or more of the first and second aspects, the number of beams or the number of FRUs is based on a frequency dependent beam direction shift for the precoding vector when using frequencies within a frequency bandwidth.

[0138] In a fourth additional aspect, either alone or in combination with one or more of the first to third aspects, the one or more parameters include one or more of the number of beams to be indicated in a multi-part beam report, the number of FRUs to be indicated in a multi-part beam report, the maximum number of beams to be indicated in a multi-part beam report, or the maximum number of FRUs to be indicated in a multi-part beam report.

[0139] In a fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, one or more parameters are based on one or more of the capabilities of the network node associated with the beam management procedure, the power resources of the network node, the size of the frequency bandwidth, or the carrier frequency of the frequency bandwidth.

[0140] In a sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, process 800 includes: the second part includes multiple per-beam indications of one or more FRUs in a plurality of candidate beams associated with corresponding beams in a plurality of candidate beams, or the second part includes multiple per-FRU indications of one or more beams in a plurality of candidate beams associated with corresponding FRUs in a plurality of candidate beams.

[0141] In a seventh additional aspect, alone or in combination with one or more of the first to sixth aspects, the second part indicates each of an association of a first beam with a first FRU of a frequency bandwidth and an association of a second beam with a second FRU of a frequency bandwidth based on a corresponding per-beam indication of an associated signal strength or a corresponding per-FRU indication of an associated signal strength.

[0142] In an eighth additional aspect alone or in combination with one or more of the first to seventh aspects, the multi-part beam report indicates that the first beam is a preferred beam for the first FRU and the second beam is a preferred beam for the second FRU.

[0143] In a ninth additional aspect, alone or in combination with one or more of the first to eighth aspects, each of the FRUs has an equal bandwidth size.

[0144] Although Figure 8 An example block diagram of process 800 is shown, but in some aspects, the same Figure 8 Process 800 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in . Additionally or alternatively, two or more of the blocks in process 800 may be executed in parallel.

[0145] Fig. 9 is a flow chart illustrating an example process 900 performed, for example, by a network node, to support beam reporting with FRU granularity in accordance with the present disclosure. The example process 900 is an example of operations in which a network node (eg, network node 110) performs operations associated with beam reporting with frequency resource unit granularity.

[0146] like Fig. 9As shown, in some aspects, process 900 may include sending an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure (block 910). For example, a network node (such as by using Fig.11 The communication manager 150 or the sending component 1104 depicted in FIG. 1 may send an indication of one or more parameters for transmission of a multi-part beam report associated with a beam management procedure, as described above.

[0147] like Fig. 9 As further shown in FIG. 9 , in some aspects, process 900 may include transmitting a plurality of RSs over a frequency bandwidth, each RS in the plurality of RSs being associated with a respective candidate beam in a plurality of candidate beams (block 920). For example, a network node (such as by using Fig.11 The communication manager 150 or the transmitting component 1104 depicted in FIG. 1 may transmit a plurality of RSs over a frequency bandwidth, each RS of the plurality of RSs being associated with a corresponding candidate beam of the plurality of candidate beams, as described above.

[0148] like Fig. 9 As further shown in FIG. 9 , in some aspects, process 900 may include receiving a multi-part beam report based on one or more parameters (block 930). For example, a network node (such as by using Fig.11 The communication manager 150 or receiving component 1102 depicted in the embodiment may receive a multi-part beam report based on one or more parameters. The multi-part beam report may include: a first part indicating one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on the measurement of the multiple RSs; and a second part indicating an association of a first beam in the multiple candidate beams with a first FRU in the FRUs and an association of a second beam in the multiple candidate beams with a second FRU in the FRUs based on the measurement of the multiple RSs, as described above.

[0149] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below or in combination with one or more other processes described elsewhere herein.

[0150] In a first additional aspect, the plurality of RSs include one or more of CSI-RS or SSBs.

[0151] In a second additional aspect alone or in combination with the first aspect, the first portion has a fixed payload size, and wherein the second portion has a payload size based on the first portion.

[0152] In a third additional aspect alone or in combination with one or more of the first and second aspects, the number of beams or the number of FRUs is based on a frequency dependent beam direction shift for the precoding vector when using frequencies within a frequency bandwidth.

[0153] In a fourth additional aspect, either alone or in combination with one or more of the first to third aspects, the one or more parameters include one or more of the number of beams to be indicated in a multi-part beam report, the number of FRUs to be indicated in a multi-part beam report, the maximum number of beams to be indicated in a multi-part beam report, or the maximum number of FRUs to be indicated in a multi-part beam report.

[0154] In a fifth additional aspect, either alone or in combination with one or more of the first to fourth aspects, one or more parameters are based on one or more of the capabilities of the network node associated with the beam management procedure, the power resources of the network node, the size of the frequency bandwidth, or the carrier frequency of the frequency bandwidth.

[0155] In a sixth additional aspect, either alone or in combination with one or more of the first to fifth aspects, process 900 includes: the second part includes multiple per-beam indications of one or more FRUs in a plurality of candidate beams associated with corresponding beams in a plurality of candidate beams, or the second part includes multiple per-FRU indications of one or more beams in a plurality of candidate beams associated with corresponding FRUs in the FRU.

[0156] In a seventh additional aspect, alone or in combination with one or more of the first to sixth aspects, the second part indicates each of an association of a first beam with a first FRU of a frequency bandwidth and an association of a second beam with a second FRU of a frequency bandwidth based on a corresponding per-beam indication of an associated signal strength or a corresponding per-FRU indication of an associated signal strength.

[0157] In an eighth additional aspect alone or in combination with one or more of the first to seventh aspects, the multi-part beam report indicates that the first beam is a preferred beam for the first FRU and the second beam is a preferred beam for the second FRU.

[0158] In a ninth additional aspect, alone or in combination with one or more of the first to eighth aspects, each of the FRUs has an equal bandwidth size.

[0159] Although Fig. 9 An example block diagram of process 900 is shown, but in some aspects, the same Fig. 9 Process 900 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in . Additionally or alternatively, two or more of the blocks in process 900 may be executed in parallel.

[0160] Fig.10 1 is a diagram of an example apparatus 1000 for wireless communication supporting beam reporting with FRU granularity according to the present disclosure. Apparatus 1000 may be a UE, or a UE may include apparatus 1000. In some aspects, apparatus 1000 includes a receiving component 1002 and a transmitting component 1004 that may communicate with each other (e.g., via one or more buses or one or more other components). As shown, apparatus 1000 may communicate with another apparatus 1006 (such as a UE, a base station, or another wireless communication device) using receiving component 1002 and transmitting component 1004. As further shown, apparatus 1000 may include a communication manager 1008 (e.g., communication manager 140).

[0161] In some aspects, the apparatus 1000 may be configured to perform Figure 7 Additionally or alternatively, the apparatus 1000 may be configured to perform one or more processes described herein, such as Figure 8 In some aspects, the apparatus 1000 or Fig.10 One or more of the components shown may include a combination of Figure 2 Additionally or alternatively, Fig.10 One or more of the components shown may be implemented in combination with Figure 2 In one or more components described herein. Additionally or alternatively, one or more components in the component set may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0162] The receiving component 1002 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the apparatus 1006. The receiving component 1002 may provide the received communications to one or more other components of the apparatus 1000. In some aspects, the receiving component 1002 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the apparatus 1000. In some aspects, the receiving component 1002 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0163] The transmitting component 1004 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1006. In some aspects, one or more other components of the device 1000 may generate communications and may provide the generated communications to the transmitting component 1004 for transmission to the device 1006. In some aspects, the transmitting component 1004 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1006. In some aspects, the transmitting component 1004 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 1004 can be co-located with the receive component 1002 in a transceiver.

[0164] The receiving component 1002 may receive an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure. The receiving component 1002 may receive a plurality of RSs over a frequency bandwidth, each of the plurality of RSs being associated with a corresponding candidate beam of a plurality of candidate beams. The sending component 1004 may send a multi-part beam report based on the one or more parameters, the multi-part beam report comprising: a first part indicating one or more of the number of beams of the plurality of candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the plurality of RSs; and a second part indicating an association of a first beam of the plurality of candidate beams with a first FRU of the FRUs and an association of a second beam of the plurality of candidate beams with a second FRU of the FRUs based on measurements of the plurality of RSs.

[0165] Fig.10 The number and arrangement of components shown in FIG. are provided as examples. In practice, Fig.10 There may be additional components, fewer components, different components, or differently arranged components than those shown in FIG. Fig.10 Two or more components shown in may be implemented in a single component, or Fig.10 The single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Fig.10 The assembly of (one or more) components shown in the executable is described as being composed of Fig.10 One or more functions performed by another set of components shown in .

[0166] Fig.111 is a diagram of an example apparatus 1100 for wireless communication supporting beam reporting with FRU granularity according to the present disclosure. The apparatus 1100 may be a network node, or the network node may include the apparatus 1100. In some aspects, the apparatus 1100 includes a receiving component 1102 and a transmitting component 1104 that may communicate with each other (e.g., via one or more buses or one or more other components). As shown, the apparatus 1100 may communicate with another apparatus 1106 (such as a UE, a base station, or another wireless communication device) using the receiving component 1102 and the transmitting component 1104. As further shown, the apparatus 1100 may include a communication manager 1108 (e.g., the communication manager 150).

[0167] In some aspects, the apparatus 1100 may be configured to perform Figure 7 Additionally or alternatively, device 1100 may be configured to perform one or more processes described herein (such as process 900). In some aspects, device 1100 or Fig.11 One or more of the components shown may include a combination of Figure 2 Additionally or alternatively, Fig.11 One or more of the components shown may be implemented in combination with Figure 2 In one or more components described herein. Additionally or alternatively, one or more components in the component set may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or codes stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0168] The receiving component 1102 may receive communications from the device 1106, such as reference signals, control information, data communications, or combinations thereof. The receiving component 1102 may provide the received communications to one or more other components of the device 1100. In some aspects, the receiving component 1102 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the device 1100. In some aspects, the receiving component 1102 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof, of the described network nodes.

[0169] The transmitting component 1104 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1106. In some aspects, one or more other components of the device 1100 may generate communications and may provide the generated communications to the transmitting component 1104 for transmission to the device 1106. In some aspects, the transmitting component 1104 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1106. In some aspects, the transmitting component 1104 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described network nodes. In some aspects, the transmit component 1104 can be co-located with the receive component 1102 in a transceiver.

[0170] The sending component 1104 can send an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure. The sending component 1104 can send multiple RSs on a frequency bandwidth, each RS in the multiple RSs being associated with a corresponding candidate beam in multiple candidate beams. The receiving component 1102 can receive a multi-part beam report based on one or more parameters, the multi-part beam report including: a first part, the first part indicating one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of FRUs within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs; and a second part, the second part indicating an association of a first beam in the multiple candidate beams with a first FRU in the FRUs and an association of a second beam in the multiple candidate beams with a second FRU in the FRUs based on measurements of the multiple RSs.

[0171] Fig.11 The number and arrangement of components shown in FIG. are provided as examples. In practice, Fig.11 There may be additional components, fewer components, different components, or differently arranged components than those shown in FIG. Fig.11 Two or more components shown in may be implemented in a single component, or Fig.11 The single component shown in may be implemented as multiple distributed components. Additionally or alternatively, Fig.11 The assembly of (one or more) components shown in the executable is described as being composed of Fig.11 One or more functions performed by another set of components shown in .

[0172] The following provides an overview of some aspects of the disclosure:

[0173] Aspect 1: A method for wireless communication performed by a user equipment (UE), comprising: receiving an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure; receiving multiple reference signals (RS) on a frequency bandwidth, each RS of the multiple RSs being associated with a corresponding candidate beam of multiple candidate beams; and sending the multi-part beam report based on the one or more parameters, the multi-part beam report comprising: a first part, the first part indicating one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of frequency resource units (FRUs) within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs; and a second part, the second part indicating an association of a first beam of the multiple candidate beams with a first FRU of the FRUs and an association of a second beam of the multiple candidate beams with a second FRU of the FRUs based on the measurements of the multiple RSs.

[0174] Aspect 2: The method according to aspect 1, wherein the multiple RSs include one or more of a channel state information reference signal (CSI-RS) or a synchronization signal block (SSB).

[0175] Aspect 3: The method according to any one of aspects 1 to 2, wherein the first part has a fixed payload size, and wherein the second part has a payload size based on the first part.

[0176] Aspect 4: The method according to any one of Aspects 1 to 3, wherein when frequencies within the frequency bandwidth are used, the number of beams or the number of FRUs is shifted based on a frequency-dependent beam direction for a precoding vector.

[0177] Aspect 5: A method according to any one of Aspects 1 to 4, wherein the one or more parameters include one or more of the following: the number of beams to be indicated in the multi-part beam report, the number of FRUs to be indicated in the multi-part beam report, the maximum number of beams to be indicated in the multi-part beam report, or the maximum number of FRUs to be indicated in the multi-part beam report.

[0178] Aspect 6: A method according to any one of Aspects 1 to 5, wherein the one or more parameters are based on one or more of the following: capabilities of a network node associated with the beam management procedure, power resources of the network node, the size of the frequency bandwidth, or a carrier frequency of the frequency bandwidth.

[0179] Aspect 7: A method according to any one of Aspects 1 to 6, wherein: the second part includes multiple per-beam indications of one or more FRUs in the FRUs associated with corresponding beams in the multiple candidate beams, or the second part includes multiple per-FRU indications of one or more FRUs in the multiple candidate beams associated with corresponding FRUs in the FRUs.

[0180] Aspect 8: A method according to any one of Aspects 1 to 7, wherein the second part indicates each of the associations of the first beam with the first FRU of the frequency bandwidth and the association of the second beam with the second FRU of the frequency bandwidth based on: a corresponding per-beam indication of the associated signal strength, or a corresponding per-FRU indication of the associated signal strength.

[0181] Aspect 9: The method according to any one of aspects 1 to 8, wherein the multi-part beam report indicates that the first beam is the preferred beam for the first FRU and the second beam is the preferred beam for the second FRU.

[0182] Aspect 10: The method according to any one of aspects 1 to 9, wherein each of the FRUs has an equal bandwidth size.

[0183] Aspect 11: A method of wireless communication performed by a network node, comprising: sending an indication of one or more parameters for sending a multi-part beam report associated with a beam management procedure; sending multiple reference signals (RS) on a frequency bandwidth, each RS of the multiple RSs being associated with a corresponding candidate beam of multiple candidate beams; and receiving the multi-part beam report based on the one or more parameters, the multi-part beam report comprising: a first part, the first part indicating one or more of the number of beams of the multiple candidate beams indicated in the multi-part report or the number of frequency resource units (FRUs) within the frequency bandwidth indicated in the multi-part beam report based on measurements of the multiple RSs; and a second part, the second part indicating an association of a first beam of the multiple candidate beams with a first FRU of the FRUs and an association of a second beam of the multiple candidate beams with a second FRU of the FRUs based on the measurements of the multiple RSs.

[0184] Aspect 12: The method according to aspect 11, wherein the multiple RSs include one or more of a channel state information reference signal (CSI-RS) or a synchronization signal block (SSB).

[0185] Aspect 13: The method according to any one of aspects 11 to 12, wherein the first part has a fixed payload size, and wherein the second part has a payload size based on the first part.

[0186] Aspect 14: A method according to any one of Aspects 11 to 13, wherein when frequencies within the frequency bandwidth are used, the number of beams or the number of FRUs is shifted based on a frequency-dependent beam direction for a precoding vector.

[0187] Aspect 15: A method according to any one of Aspects 11 to 14, wherein the one or more parameters include one or more of the following: the number of beams to be indicated in the multi-part beam report, the number of FRUs to be indicated in the multi-part beam report, the maximum number of beams to be indicated in the multi-part beam report, or the maximum number of FRUs to be indicated in the multi-part beam report.

[0188] Aspect 16: A method according to any one of Aspects 11 to 15, wherein the one or more parameters are based on one or more of the following: the capability of the network node associated with the beam management procedure, the power resources of the network node, the size of the frequency bandwidth, or the carrier frequency of the frequency bandwidth.

[0189] Aspect 17: A method according to any one of Aspects 11 to 16, wherein: the second part includes multiple per-beam indications of one or more FRUs in the FRUs associated with corresponding beams in the multiple candidate beams, or the second part includes multiple per-FRU indications of one or more FRUs in the multiple candidate beams associated with corresponding FRUs in the FRUs.

[0190] Aspect 18: A method according to any one of Aspects 11 to 17, wherein the second part indicates each of the associations of the first beam with the first FRU of the frequency bandwidth and the association of the second beam with the second FRU of the frequency bandwidth based on: a corresponding per-beam indication of the associated signal strength, or a corresponding per-FRU indication of the associated signal strength.

[0191] Aspect 19: The method according to any one of aspects 11 to 18, wherein the multi-part beam report indicates that the first beam is the preferred beam for the first FRU and the second beam is the preferred beam for the second FRU.

[0192] Aspect 20: The method according to any one of aspects 11 to 19, wherein each of the FRUs has an equal bandwidth size.

[0193] Aspect 21: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 20.

[0194] Aspect 22: A device for wireless communication, the device comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1 to 20.

[0195] Aspect 23: An apparatus for wireless communication, the apparatus comprising at least one means for performing the method according to one or more of aspects 1 to 20.

[0196] Aspect 24: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 20.

[0197] Aspect 25: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 20.

[0198] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0199] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware or hardware and software. "Software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable programs, threads of execution, procedures or functions, etc., whether it is described in software, firmware, middleware, microcode, hardware description language or other terms. As used herein, "processor" is implemented with hardware or a combination of hardware and software. It will be obvious that the system or method described herein can be implemented in different forms of hardware or a combination of hardware and software. The actual dedicated control hardware or software code for implementing these systems or methods does not limit various aspects. Therefore, the operation and behavior of these systems or methods are described herein without reference to specific software codes, because those skilled in the art will understand that software and hardware can be designed to implement these systems or methods based at least in part on the description herein.

[0200] 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.

[0201] Although the specific combination of features is stated in the claims or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner not specifically described in the claims or not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (it includes a single member). As an example, "at least one of the following: a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, and any combination with multiple identical elements (for example, a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c and c+c+c, or any other ordering of a, b and c).

[0202] Any element, action or instruction used herein should not be interpreted as key or necessary unless clearly stated. In addition, as used herein, the article "one" is intended to 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 connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If only one item is intended to be referred to, the phrase "only one" or similar terms will be used. Moreover, as used herein, the terms "having", "containing", "comprising" and similar terms are intended to be open terms, which do not limit the elements they modify (for example, the element "comprising" A can also contain B). In addition, the phrase "based on" is intended to represent "based at least in part on", unless explicitly stated otherwise. Furthermore, as used herein, the term "or" when used consecutively is intended to be inclusive and used interchangeably with "and / or" unless explicitly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: at least one memory; and at least one processor, the at least one processor being communicatively coupled to the at least one memory, the at least one processor being configured to cause the UE to: receiving an indication of one or more parameters for transmission of a multi-part beam report associated with a beam management procedure; receiving a plurality of reference signals (RSs) over a frequency bandwidth, each RS of the plurality of RSs being associated with a corresponding candidate beam of a plurality of candidate beams; as well as The multi-part beam report is sent based on the one or more parameters, the multi-part beam report comprising: a first part indicating one or more of a number of beams of the plurality of candidate beams indicated in the multi-part report or a number of frequency resource units (FRUs) within the frequency bandwidth indicated in the multi-part beam report based on measurements of the plurality of RSs; and and a second part indicating an association of a first beam of the plurality of candidate beams with a first FRU of the FRUs and an association of a second beam of the plurality of candidate beams with a second FRU of the FRUs based on the measurements of the plurality of RSs.

2. The UE according to claim 1, wherein the plurality of RSs comprises one or more of the following: Channel State Information Reference Signal (CSI-RS); or Signal Block (SSB).

3. The UE of claim 1 , wherein the first part has a fixed payload size, and Wherein the second portion has a payload size based on the first portion.

4. The UE of claim 1, wherein when frequencies within the frequency bandwidth are used, the number of beams or the number of FRUs is shifted based on a frequency-dependent beam direction for a precoding vector.

5. The UE of claim 1 , wherein the one or more parameters include one or more of the following: the number of said beams to be indicated in said multi-part beam report, the number of said FRUs to be indicated in said multi-part beam report, the maximum number of beams to be indicated in the multi-part beam report, or The maximum number of FRUs to be indicated in the multi-part beam report.

6. The UE of claim 1 , wherein the one or more parameters are based on one or more of: the capabilities of the network nodes associated with the beam management procedure, the power resources of the network node, The size of the frequency bandwidth, or The carrier frequency of the frequency bandwidth.

7. The UE according to claim 1, wherein: The second portion includes a plurality of per-beam indications of one or more of the FRUs associated with corresponding beams of the plurality of candidate beams, or The second portion includes a plurality of per-FRU indications of one or more of the plurality of candidate beams associated with respective ones of the FRUs.

8. The UE of claim 1 , wherein the second portion indicates each of the association of the first beam with the first FRU of the frequency bandwidth and the association of the second beam with the second FRU of the frequency bandwidth based on: a corresponding per-beam indication of the associated signal strength, or A corresponding per-FRU indication of the associated signal strength.

9. The UE of claim 1, wherein the multi-part beam report indicates that the first beam is a preferred beam for the first FRU and the second beam is a preferred beam for the second FRU.

10. The UE of claim 1, wherein each of the FRUs has an equal bandwidth size.

11. A network node for wireless communication, the network node comprising: at least one memory; and at least one processor, the at least one processor being communicatively coupled to the at least one memory, the at least one processor being configured to cause the network node to: transmitting an indication of one or more parameters for transmission of a multi-part beam report associated with a beam management procedure; transmitting a plurality of reference signals (RSs) over a frequency bandwidth, each RS of the plurality of RSs being associated with a corresponding candidate beam of the plurality of candidate beams; as well as The multi-part beam report is received based on the one or more parameters, the multi-part beam report comprising: a first part indicating one or more of a number of beams of the plurality of candidate beams indicated in the multi-part report or a number of frequency resource units (FRUs) within the frequency bandwidth indicated in the multi-part beam report based on measurements of the plurality of RSs; and and a second part indicating an association of a first beam of the plurality of candidate beams with a first FRU of the FRUs and an association of a second beam of the plurality of candidate beams with a second FRU of the FRUs based on the measurements of the plurality of RSs.

12. The network node according to claim 11, wherein the plurality of RSs comprises one or more of the following: Channel State Information Reference Signal (CSI-RS); or Signal Block (SSB).

13. The network node of claim 11, wherein the first portion has a fixed payload size, and Wherein the second portion has a payload size based on the first portion.

14. The network node of claim 11, wherein when frequencies within the frequency bandwidth are used, the number of beams or the number of FRUs is shifted based on a frequency-dependent beam direction for a precoding vector.

15. The network node of claim 11, wherein the one or more parameters include one or more of the following: the number of said beams to be indicated in said multi-part beam report, the number of said FRUs to be indicated in said multi-part beam report, the maximum number of beams to be indicated in the multi-part beam report, or The maximum number of FRUs to be indicated in the multi-part beam report.

16. The network node of claim 11, wherein the one or more parameters are based on one or more of: capabilities of the network node associated with the beam management procedure, the power resources of the network node, The size of the frequency bandwidth, or The carrier frequency of the frequency bandwidth.

17. The network node according to claim 11, wherein: The second portion includes a plurality of per-beam indications of one or more of the FRUs associated with corresponding beams of the plurality of candidate beams, or The second portion includes a plurality of per-FRU indications of one or more of the plurality of candidate beams associated with respective ones of the FRUs.

18. The network node of claim 11, wherein the second portion indicates each of the association of the first beam with the first FRU of the frequency bandwidth and the association of the second beam with the second FRU of the frequency bandwidth based on: a corresponding per-beam indication of the associated signal strength, or A corresponding per-FRU indication of the associated signal strength.

19. The network node of claim 11, wherein the multi-part beam report indicates that the first beam is a preferred beam for the first FRU and the second beam is a preferred beam for the second FRU.

20. The network node of claim 11, wherein each of the FRUs has an equal bandwidth size.

21. A method of wireless communication performed by a user equipment (UE), the method comprising: receiving an indication of one or more parameters for transmission of a multi-part beam report associated with a beam management procedure; receiving a plurality of reference signals (RSs) over a frequency bandwidth, each RS of the plurality of RSs being associated with a corresponding candidate beam of a plurality of candidate beams; as well as The multi-part beam report is sent based on the one or more parameters, the multi-part beam report comprising: a first part indicating one or more of a number of beams of the plurality of candidate beams indicated in the multi-part report or a number of frequency resource units (FRUs) within the frequency bandwidth indicated in the multi-part beam report based on measurements of the plurality of RSs; and and a second part indicating an association of a first beam of the plurality of candidate beams with a first FRU of the FRUs and an association of a second beam of the plurality of candidate beams with a second FRU of the FRUs based on the measurements of the plurality of RSs.

22. The method of claim 21, wherein the first portion has a fixed payload size, and Wherein the second portion has a payload size based on the first portion.

23. The method of claim 21, wherein when frequencies within the frequency bandwidth are used, the number of beams or the number of FRUs is shifted based on a frequency-dependent beam direction for a precoding vector.

24. The method of claim 21, wherein the one or more parameters include one or more of the following: the number of said beams to be indicated in said multi-part beam report, the number of said FRUs to be indicated in said multi-part beam report, the maximum number of beams to be indicated in the multi-part beam report, or The maximum number of FRUs to be indicated in the multi-part beam report.

25. The method of claim 21, wherein: The second portion includes a plurality of per-beam indications of one or more of the FRUs associated with corresponding beams of the plurality of candidate beams, or The second portion includes a plurality of per-FRU indications of one or more of the plurality of candidate beams associated with respective ones of the FRUs.

26. A method of wireless communication performed by a network node, the method comprising: transmitting an indication of one or more parameters for transmission of a multi-part beam report associated with a beam management procedure; transmitting a plurality of reference signals (RSs) over a frequency bandwidth, each RS of the plurality of RSs being associated with a corresponding candidate beam of the plurality of candidate beams; as well as The multi-part beam report is received based on the one or more parameters, the multi-part beam report comprising: a first part indicating one or more of a number of beams of the plurality of candidate beams indicated in the multi-part report or a number of frequency resource units (FRUs) within the frequency bandwidth indicated in the multi-part beam report based on measurements of the plurality of RSs; and and a second part indicating an association of a first beam of the plurality of candidate beams with a first FRU of the FRUs and an association of a second beam of the plurality of candidate beams with a second FRU of the FRUs based on the measurements of the plurality of RSs.

27. The method of claim 26, wherein the first portion has a fixed payload size, and Wherein the second portion has a payload size based on the first portion.

28. The method of claim 26, wherein when frequencies within the frequency bandwidth are used, the number of beams or the number of FRUs is shifted based on a frequency-dependent beam direction for a precoding vector.

29. The method of claim 26, wherein the one or more parameters include one or more of the following: the number of said beams to be indicated in said multi-part beam report, the number of said FRUs to be indicated in said multi-part beam report, the maximum number of beams to be indicated in the multi-part beam report, or The maximum number of FRUs to be indicated in the multi-part beam report.

30. The method of claim 26, wherein: The second portion includes a plurality of per-beam indications of one or more of the FRUs associated with corresponding beams of the plurality of candidate beams, or The second portion includes a plurality of per-FRU indications of one or more of the plurality of candidate beams associated with respective ones of the FRUs.

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