Technologies for beam management

Abstract

In summary, various aspects of this disclosure relate to wireless communication. In some aspects, a user equipment (UE) can use a set of candidate beams to measure signals transmitted by a base station. The UE can communicate with the base station using a first beam from the set of candidate beams, at least in part based on the measurement of the signal. The UE can determine to switch the first beam based on a condition that a first value of a beam parameter associated with a second beam from the set of candidate beams satisfies. The UE can measure the second beam, at least in part based on the determination to switch the first beam, to obtain a second value of the beam parameter. The UE can switch the first beam to the second beam if the second value satisfies a condition. Numerous other aspects are provided.

Description

[0001] Cross-reference of related applications

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 118,786, entitled "TECHNIQUES FOR BEAM MANAGEMENT," filed November 27, 2020, and U.S. Non-Provisional Patent Application No. 17 / 453,552, entitled "TECHNIQUES FOR BEAM MANAGEMENT," filed November 4, 2021, which are hereby expressly incorporated herein by reference. Technical Field

[0003] In summary, various aspects of this disclosure relate to wireless communication, as well as technologies and apparatus for beam management. Background Technology

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that enable communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / Improved LTE is an enhancement set of the Universal Mobile Telecommunications System (UMTS) mobile standard issued by the 3rd Generation Partnership Project (3GPP).

[0005] A wireless network may include multiple base stations (BSs) capable of supporting communication for multiple user equipments (UEs). UEs can communicate with the BS via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, while an uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, gNB, Access Point (AP), Radio Headend, Transmit / Receive Point (TRP), New Radio (NR) BS, 5G Node B, etc.

[0006] The aforementioned multiple access technologies have been adopted in various telecommunications standards to provide a common protocol enabling different user equipment to communicate at the city, country, regional, and even global levels. NR (which can also be referred to as 5G) is an enhancement set of the LTE mobile standard issued by 3GPP. NR is designed to better support mobile broadband internet access by improving spectrum efficiency, reducing costs, improving service, utilizing new spectrum, and better integrating with other open standards by using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation. Further improvements to LTE, NR, and other wireless access technologies remain useful as the demand for mobile broadband access continues to grow. Summary of the Invention

[0007] In some aspects, a method of wireless communication performed by a user equipment (UE) includes: measuring a signal transmitted by a base station using a set of candidate beams; communicating with the base station using a first beam from the set of candidate beams, at least in part based on the measurement of the signal; determining to switch the first beam, at least in part based on a condition that a first value of a beam parameter associated with a second beam from the set of candidate beams satisfies; measuring the second beam, at least in part based on the determination to switch the first beam, to obtain a second value of the beam parameter; and switching the first beam to the second beam if the second value of the beam parameter satisfies the condition.

[0008] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory. The one or more processors may be configured to: measure a signal transmitted by a base station using a set of candidate beams; communicate with the base station using a first beam from the set of candidate beams, at least in part based on the measurement of the signal; determine to switch the first beam, at least in part based on a condition that a first value of a beam parameter associated with a second beam from the set of candidate beams satisfies; measure the second beam, at least in part based on the determination to switch the first beam, to obtain a second value of the beam parameter; and switch the first beam to the second beam if the second value of the beam parameter satisfies the condition.

[0009] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: measure a signal transmitted by a base station using a set of candidate beams; communicate with the base station using a first beam from the set of candidate beams, at least in part based on the measurement of the signal; determine to switch the first beam, at least in part based on a condition that a first value of a beam parameter associated with a second beam from the set of candidate beams satisfies; measure the second beam, at least in part based on the determination to switch the first beam, to obtain a second value of the beam parameter; and switch the first beam to the second beam if the second value of the beam parameter satisfies the condition.

[0010] In some aspects, an apparatus for wireless communication includes: units for measuring a signal transmitted by a base station using a set of candidate beams; units for communicating with the base station using a first beam from the set of candidate beams, at least in part based on the measurement of the signal; units for determining to switch the first beam, at least in part based on a condition that a first value of a beam parameter associated with a second beam from the set of candidate beams satisfies; units for measuring the second beam to obtain a second value of the beam parameter, at least in part based on the determination to switch the first beam; and a set of units for switching the first beam to the second beam if the second value of the beam parameter satisfies the condition.

[0011] The aspects generally include, substantially as described herein with reference to the accompanying drawings and description, and as illustrated by the drawings and description, methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication equipment and / or processing systems.

[0012] The foregoing has broadly summarized the features and technical advantages of examples according to this disclosure in order to provide a better understanding of the following detailed description. Further features and advantages will be described below. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for achieving the same purpose as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein (in both their organization and manner of operation) and their associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each drawing is provided for illustration and description purposes and not for defining limitations on the claims. Attached Figure Description

[0013] To gain a more detailed understanding of the features described above, reference can be made to various aspects of the brief overview, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of the disclosure and should therefore not be considered as limiting the scope of the disclosure, as this description may allow for other equivalent aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0014] Figure 1 This is a diagram illustrating an example of a wireless network according to this disclosure.

[0015] Figure 2 This is a diagram illustrating an example of communication between a base station and a user equipment (UE) in a wireless network according to this disclosure.

[0016] Figure 3 This is a diagram illustrating an exemplary beamforming architecture that supports beamforming for millimeter-wave (mmW) communications in accordance with this disclosure.

[0017] Figure 4 This is a diagram illustrating an example of a synchronization signal (SS) hierarchy according to this disclosure.

[0018] Figure 5 and Figure 6 This is a diagram illustrating an example of a beam management process according to this disclosure.

[0019] Figure 7 This is a diagram illustrating an example of beam management in accordance with this disclosure.

[0020] Figure 8 This is a diagram illustrating an exemplary process associated with beam management according to this disclosure.

[0021] Figure 9 and Figure 10 This is a block diagram of an exemplary apparatus for wireless communication according to the present disclosure. Detailed Implementation

[0022] The various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be embodied in many different forms and should not be construed as limited to any particular structure or function given throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and fully convey the scope of this disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art should recognize that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently or in combination with any other aspect of this disclosure. For example, any number of the aspects set forth herein may be used to implement an apparatus or practice a method. Furthermore, the scope of this disclosure is intended to cover an apparatus or method practiced using a structure, function, or structure and function other than or different from the aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure herein may be embodied by one or more elements of the claims.

[0023] Several aspects of a telecommunications system will now be presented with reference to various devices and technologies. These devices and technologies will be described in the following specific embodiments by various frames, modules, components, circuits, steps, processes, algorithms, etc. (collectively, “elements”), and illustrated in the accompanying drawings. These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0024] It should be noted that while this document may use terms commonly associated with 5G or NR Radio Access Technologies (RATs) to describe aspects, aspects of this disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and / or post-5G (e.g., 6G) RATs.

[0025] Figure 1This is a diagram illustrating an example of a wireless network 100 according to this disclosure. Wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network, etc. Wireless network 100 may include multiple base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with user equipment (UE) and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, Transmit / Receive Point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, depending on the context in which the term "cell" is used, it may refer to the coverage area of ​​a BS and / or BS subsystem (where the BS and / or BS subsystem serves that coverage area).

[0026] A BS can provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. A macrocell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access for UEs with service subscriptions. A picocell can cover a relatively small geographic area and can allow unrestricted access for UEs with service subscriptions. A femtocell can cover a relatively small geographic area (e.g., a home) and can allow restricted access for UEs associated with the femtocell (e.g., UEs in a Closed User Group (CSG)). A BS used for macrocells can be referred to as a macro BS. A BS used for picocells can be referred to as a pico BS. A BS used for femtocells can be referred to as a femtocell BS or a home BS. Figure 1 In the example shown, BS 110a can be a macro BS for macro cell 102a, BS 110b can be a pico BS for pico cell 102b, and BS 110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “Node B,” “5G NB,” and “cell” are used interchangeably herein.

[0027] In some respects, the cell may not be fixed, and the geographical area of ​​the cell may move depending on the location of the mobile BS. In some respects, BSs may interconnect with each other and / or interconnect to one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (e.g., direct physical connections or virtual networks) using any suitable transport network.

[0028] The wireless network 100 may also include relay stations. A relay station is an entity capable of receiving data transmissions from an upstream station (e.g., a BS or a UE) and transmitting those data transmissions to a downstream station (e.g., a UE or a BS). A relay station can also be a UE capable of relaying transmissions for other UEs. Figure 1 In the example shown, relay BS 110d can communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS can also be referred to as a relay station, relay base station, relay, etc.

[0029] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs), such as macro BSs, pico BSs, femto BSs, repeater BSs, etc. These different types of BSs can have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs can have high transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and repeater BSs can have lower transmit power levels (e.g., 0.1 to 2 watts).

[0030] Network controller 130 can be coupled to a group of base stations (BSs) and can provide coordination and control for these BSs. Network controller 130 can communicate with the BSs via backhaul. The BSs can also communicate with each other directly or indirectly, for example, via wireless or wired backhaul.

[0031] UEs 120 (e.g., 120a, 120b, 120c) may be distributed throughout the wireless network 100, and each UE may be fixed or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, user unit, site, etc. A UE may be a cellular phone (e.g., a smartphone), 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 or equipment, a biosensor / device, a wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio device), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0032] Some UEs can be considered Machine-Type Communication (MTC) or Evolved or Enhanced Machine-Type Communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote control devices, sensors, instruments, monitors, and / or location tags, which can communicate with a base station, another device (e.g., a remote control device), or some other entity. Wireless nodes can provide connectivity to or from a network (e.g., a wide area network such as the Internet or cellular networks) via wired or wireless communication links. Some UEs can be considered Internet of Things (IoT) devices and / or can be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs can be considered Client Equipment (CPE). UE 120 can be included within a housing that houses the components of UE 120, such as processor components and / or memory components. In some aspects, the processor components and memory components can be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) can be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0033] Typically, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific RAT and can operate on one or more frequencies. A RAT can also be referred to as a wireless technology, air interface, etc. A frequency can also be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0034] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, UEs 120 can communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicular (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols or vehicle-to-infrastructure (V2I) protocols) and / or mesh networks. In this case, UEs 120 can perform scheduling operations, resource selection operations, and / or other operations as described elsewhere herein as performed by base station 110.

[0035] Devices in the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, devices in the wireless network 100 can communicate using an operating frequency band with a first frequency range (FR1) (spanning from 410 MHz to 7.125 GHz) and / or can communicate using an operating frequency band with a second frequency range (FR2) (spanning from 24.25 GHz to 52.6 GHz). The frequencies between FR1 and FR2 are sometimes referred to as intermediate frequency bands. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as the “sub-6 GHz” band. Similarly, FR2 is often referred to as the “millimeter wave” band, although this is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) designated as the “millimeter wave” band by the International Telecommunication Union (ITU). Therefore, unless otherwise specifically stated, it should be understood that the term "sub-6 GHz" or similar terms, as used herein, can broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or intermediate frequency band frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise specifically stated, it should be understood that the term "millimeter wave" or similar terms, as used herein, can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequency band frequencies (e.g., less than 24.25 GHz). Modifications to the frequencies included in FR1 and FR2 are contemplated, and the techniques described herein are applicable to these modified frequency ranges.

[0036] As indicated above, Figure 1 This is provided as an example. Other examples may differ from the one provided. Figure 1 The example described.

[0037] Figure 2 This is a diagram illustrating an example 200 of communication between a base station 110 and a UE 120 in a wireless network 100 according to this disclosure. The base station 110 may be equipped with... T One antenna 234a to 234t, and the UE 120 can be equipped with R Antennas 252a to 252r, of which typically T ≥ 1 and R ≥ 1.

[0038] At base station 110, transmit processor 220 can receive data for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQI) received from the UE, process (e.g., code and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. Transmit processor 220 can also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, authorizations, and / or upper-layer signaling), and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). Transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols (if applicable), and can transmit to... T Modulators (MODs) 232a to 232t provide T Each modulator 232 can process the corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The signals from modulators 232a to 232t... T Each downlink signal can be transmitted via T Two antennas, 234a and 234t, are used to transmit.

[0039] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations, and can provide the received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can condition the received signal (e.g., filter, amplify, down-convert, and digitize) to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM) to obtain the received symbols. MIMO detector 256 can receive downlink signals from all base stations. RDemodulators 254a to 254r acquire received symbols, perform MIMO detection on the received symbols (if applicable), and provide the detected symbols. Receive processor 258 can process (e.g., demodulate and decode) the detected symbols, provide decoded data of UE 120 to data sink 260, and provide decoded control and system information to controller / processor 280. The term "controller / processor" can refer to one or more controllers, one or more processors, or a combination thereof. The channel processor can determine Reference Signal Received Power (RSRP) parameters, Received Signal Strength Indicator (RSSI) parameters, Reference Signal Received Quality (RSRQ) parameters, and / or CQI parameters, etc. In some aspects, one or more components of UE 120 may be included in housing 284.

[0040] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. For example, network controller 130 may include one or more devices in the core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0041] Antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included in one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. Antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements coupled to one or more transmitting and / or receiving components (e.g., Figure 2 One or more antenna elements (one or more components).

[0042] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reporting including RSRP, RSSI, RSRQ, and / or CQI). Transmit processor 264 can also generate reference symbols for one or more reference signals. Symbols from transmit processor 264 can be pre-encoded (if applicable) by TX MIMO processor 266, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some aspects, modulators and demodulators (e.g., MOD / DEMOD 254) of UE 120 can be included in the modem of UE 120. In some aspects, UE 120 includes a transceiver. The transceiver may include any combination of antenna 252, modulator and / or demodulator 254, MIMO detector 256, receiver processor 258, transmitter processor 264 and / or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein.

[0043] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 (if applicable), and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule UE 120 for downlink and / or uplink communication. In some aspects, modulators and demodulators (e.g., MOD / DEMOD 232) of base station 110 may be included in the modem of base station 110. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antenna 234, modulator and / or demodulator 232, MIMO detector 236, receiver processor 238, transmitter processor 220 and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein.

[0044] Figure 2The controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or any other components may perform one or more techniques associated with beam management, as described in more detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component can perform or direct, for example Figure 8 The operation of process 800 and / or other processes as described herein. Memory 242 and 282 may store data and program code for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, one or more instructions, when executed by one or more processors of base station 110 and / or UE 120 (e.g., directly executed, or executed after compilation, transformation, and / or interpretation), may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 8 The operation of process 800 and / or other processes as described herein. In some aspects, execution instructions may include run instructions, translation instructions, compilation instructions, and / or interpretation instructions.

[0045] In some aspects, UE 120 includes: units for measuring signals transmitted by a base station using a set of candidate beams; units for communicating with the base station using a first beam from the set of candidate beams, at least in part based on the measurement of the signals; units for determining to switch the first beam, at least in part based on a condition that a first value of a beam parameter associated with a second beam from the set of candidate beams satisfies; units for measuring the second beam, at least in part based on the determination to switch the first beam, to obtain a second value of the beam parameter; and / or units for switching the first beam to the second beam if the second value of the beam parameter satisfies the condition. Units for UE 120 to perform the operations described herein may include one or more of, for example, antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller / processor 280, or memory 282.

[0046] In some aspects, UE 120 includes a unit for measuring the first beam according to periodic scheduling.

[0047] In some aspects, UE 120 includes: a unit for determining, at least in part, the value of the beam parameter of each candidate wave included in the candidate beam set based on measurements of the signal using the candidate beam set; or a unit for selecting a first beam from the candidate beam set based at least in part on the value of the beam parameter of each candidate wave included in the candidate beam set.

[0048] In some aspects, UE 120 includes: a unit for determining that conditions for switching a first beam to a second beam are met (e.g., based at least in part on a first value and values ​​of beam parameters associated with the first beam, wherein the first value and the value are obtained at least in part based on measurements of the signal).

[0049] In some aspects, UE 120 includes: a unit for determining, at least in part, that a condition is still satisfied based on a measurement of the second beam; or a unit for switching the first beam to the second beam, at least in part, based on the determination that the condition is still satisfied.

[0050] In some aspects, UE 120 includes: a unit for determining, at least in part, that a condition is no longer satisfied based on measurements of the second beam; or a unit for avoiding switching the first beam to the second beam based at least in part on the determination that the condition is no longer satisfied.

[0051] In some aspects, UE 120 includes: a unit for identifying stored values ​​of beam parameters of a second beam; or a unit for determining whether a condition is satisfied based at least in part on a comparison of stored values ​​of beam parameters of the second beam with values ​​of beam parameters of the first beam.

[0052] In some aspects, UE 120 includes: a unit for transmitting a measurement report, the measurement report being based at least in part on the values ​​of beam parameters of one or more serving beams associated with the UE, wherein a first beam is included in the one or more serving beams.

[0053] In some aspects, UE 120 includes: a unit for sorting the one or more serving beams at least in part based on the values ​​of beam parameters of the one or more serving beams; or a unit for selecting a set of serving beams to be included in a measurement report at least in part based on the sorting of the one or more serving beams; and a unit for transmitting a measurement report indicating the values ​​of the beam parameters of the set of serving beams.

[0054] In some aspects, UE 120 includes: units for sorting one or more serving beams at least in part based on the values ​​of beam parameters of one or more serving beams; units for selecting a set of serving beams associated with a cell at least in part based on the sorting of the one or more serving beams; or units for determining an average value of the beam parameters of a cell at least in part based on the values ​​of the beam parameters of the set of serving beams associated with a cell; and units for transmitting a measurement report indicating the average value of the beam parameters of the cell.

[0055] In some aspects, UE 120 includes: a unit for receiving from a base station, at least in part, a unit for switching a serving transmit beam associated with the base station to a different transmit beam based on a transmitted measurement report; or a unit for switching a serving transmit beam associated with the base station to the different transmit beam for the base station.

[0056] In some aspects, UE 120 includes: a unit for receiving, at least in part, a handover command from a base station instructing the UE to hand over from its serving cell to a different cell based on the transmission of a measurement report; or a unit for performing a handover from the serving cell to the different cell based at least in part on the receipt of the handover command.

[0057] As indicated above, Figure 2 This is provided as an example. Other examples may differ from the one provided. Figure 2 The example described.

[0058] Figure 3 This is a diagram illustrating an exemplary beamforming architecture 300 supporting beamforming for millimeter-wave (mmW) communications according to the present disclosure. In some aspects, architecture 300 may implement various aspects of wireless network 100. In some aspects, architecture 300 may be implemented in a transmitting device (e.g., a first wireless communication device, UE, or base station) and / or a receiving device (e.g., a second wireless communication device, UE, or base station), as described herein.

[0059] Broadly speaking, Figure 3 This is a diagram illustrating exemplary hardware components of a wireless communication device according to certain aspects of this disclosure. The illustrated components may include those that can be used for antenna element selection and / or for beamforming to transmit wireless signals. Numerous architectures exist for antenna element selection and phase shifting; only one example is shown here. Architecture 300 includes a modem (modulator / demodulator) 302, a digital-to-analog converter (DAC) 304, a first mixer 306, a second mixer 308, and a splitter 310. Architecture 300 also includes a plurality of first amplifiers 312, a plurality of phase shifters 314, a plurality of second amplifiers 316, and an antenna array 318 including a plurality of antenna elements 320.

[0060] Transmission lines or other waveguides, wires, traces, etc., are shown connecting the various components to illustrate how the signal to be transmitted can travel between the components. Reference numerals 322, 324, 326, and 328 indicate areas in architecture 300 where different types of signals travel or are processed. Specifically, reference numeral 322 indicates the area where digital baseband signals travel or are processed, reference numeral 324 indicates the area where analog baseband signals travel or are processed, reference numeral 326 indicates the area where analog intermediate frequency (IF) signals travel or are processed, and reference numeral 328 indicates the area where analog radio frequency (RF) signals travel or are processed. The architecture also includes a local oscillator A 330, a local oscillator B 332, and a controller / processor 334. In some aspects, the controller / processor 334 corresponds to the combination described above. Figure 2 The described base station controller / processor 240 and / or the combination thereof Figure 2 The controller / processor 280 of the described UE.

[0061] Each antenna element 320 may include one or more sub-elements for radiating or receiving RF signals. For example, a single antenna element 320 may include a first sub-element cross-polarized with a second sub-element, which can be used to independently transmit cross-polarized signals. Antenna elements 320 may include patch antennas, dipole antennas, or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern. The spacing between antenna elements 320 may allow signals transmitted individually by antenna elements 320 at desired wavelengths 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 the wavelength of the spacing between adjacent antenna elements 320 to allow interaction or interference of signals transmitted by individual antenna elements 320 within that desired range.

[0062] Modem 302 processes and generates digital baseband signals and can also control the operation of DAC 304, first and second mixers 306, 308, splitter 310, first amplifier 312, phase shifter 314, and / or second amplifier 316 to transmit signals via one or more of antenna elements 320. Modem 302 can process signals and control operations according to communication standards, such as the wireless standards discussed herein. DAC 304 can convert the digital baseband signal received from (and to be transmitted) by modem 302 into an analog baseband signal. First mixer 306 uses local oscillator A 330 to upconvert the analog baseband signal to an analog IF signal within the IF. For example, first mixer 306 can mix the signal with an oscillation signal generated by local oscillator A 330 to “move” the baseband analog signal to the IF. In some cases, some processing or filtering (not shown) may occur at the IF. Second mixer 308 uses local oscillator B 332 to upconvert the analog IF signal to an analog RF signal. Similar to the first mixer, the second mixer 308 can mix the signal with an oscillation signal generated by the local oscillator B 332 to "shift" the IF analog signal to the frequency of the RF or transmitted / received signal. The modem 302 and / or controller / processor 334 can adjust the frequencies of the local oscillator A 330 and / or local oscillator B 332 to generate the desired IF and / or RF frequencies and facilitate signal processing and transmission within the desired bandwidth.

[0063] In the illustrated architecture 300, the signal up-converted by the second mixer 308 is split or replicated into multiple signals by the splitter 310. The splitter 310 in architecture 300 separates the RF signal into multiple identical or nearly identical RF signals. In other examples, the splitting can occur for any type of signal, including baseband signals, baseband analog, or IF analog signals. Each of these signals may correspond to an antenna element 320, and the signal travels through and is processed by amplifiers 312, 316, phase shifters 314, and / or other elements corresponding to and processed by the respective antenna element 320 to provide power to the corresponding antenna element 320 of the antenna array 318 for transmission by these antenna elements 320. In one example, the splitter 310 may be an active splitter connected to a power supply and providing some gain such that the RF signal leaving the splitter 310 is at a power level equal to or greater than that of the signal entering the splitter 310. In another example, splitter 310 is a passive splitter not connected to a power source, and the RF signal entering splitter 310 may be at a lower power level than the RF signal entering splitter 310.

[0064] After being separated by splitter 310, the resulting RF signal can enter an amplifier, such as first amplifier 312, or phase shifter 314 corresponding to antenna element 320. The first and second amplifiers 312 and 316 are shown with dashed lines because one or both of these amplifiers may not be necessary in some respects. In some respects, both first amplifier 312 and second amplifier 316 are present. In some respects, neither first amplifier 312 nor second amplifier 316 is present. In some respects, one of amplifiers 312 or 316 is present while the other is absent. For example, if splitter 310 is an active splitter, first amplifier 312 may not be used. As a further example, if phase shifter 314 is an active phase shifter capable of providing gain, second amplifier 316 may not be used.

[0065] Amplifiers 312 and 316 can provide desired levels 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 320. Negative gain (negative dB) can be used to reduce and / or suppress the signal radiation of a particular antenna element. Each of amplifiers 312 and 316 can be independently controlled (e.g., by modem 302 or controller / processor 334) to provide independent control over the gain of each antenna element 320. For example, modem 302 and / or controller / processor 334 can have at least one control line connected to each of splitter 310, first amplifier 312, phase shifter 314, and / or second amplifier 316, which can be used to configure the gain to provide a desired amount of gain for each element and therefore for each antenna element 320.

[0066] Phase shifter 314 can provide a configurable phase shift or phase offset to the corresponding RF signal to be transmitted. Phase shifter 314 can be a passive phase shifter that is not directly connected to a power supply. Passive phase shifters may introduce some insertion loss. Second amplifier 316 can boost the signal to compensate for the insertion loss. Phase shifter 314 can also be an active phase shifter connected to a power supply, such that the active phase shifter provides a certain amount of gain or blocks insertion loss. The settings of each phase shifter 314 are independent, meaning that each phase shifter can be independently configured to provide the desired amount of phase shift, the same amount of phase shift, or some other configuration. Modem 302 and / or controller / processor 334 may have at least one control line connected to each phase shifter 314, and this at least one control line can be used to configure the phase shifter 314 to provide the desired amount of phase shift or phase offset between antenna elements 320.

[0067] In the illustrated architecture 300, the RF signal received by antenna element 320 is provided to one or more first amplifiers 356 to boost the signal strength. The first amplifiers 356 may be connected to the same antenna array 318 (e.g., for time division duplex (TDD) operation). The first amplifiers 356 may be connected to different antenna arrays 318. The boosted RF signal is input to one or more phase shifters 354 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 shifters 354 may be active or passive phase shifters. The phase shifters 354 are configured independently, meaning that each phase shifter can be independently configured to provide the desired amount of phase shift, the same amount of phase shift, or some other configuration. The modem 302 and / or controller / processor 334 may have at least one control line connected to each phase shifter 354 and the at least one control line may be used to configure the phase shifter 354 to provide a desired amount of phase shift or phase offset between the antenna elements 320 to achieve reception via one or more Rx beams.

[0068] The output of phase shifter 354 can be input to one or more second amplifiers 352 for signal amplification of the phase-shifted received RF signal. Second amplifiers 352 can be individually configured to provide a configured gain amount. Second amplifiers 352 can be individually configured to provide a gain amount to ensure that signals input to combiner 350 have the same amplitude. Amplifiers 352 and / or 356 are shown in dashed lines because they may not be necessary in some aspects. In some aspects, both amplifiers 352 and 356 are present. In another aspect, neither amplifier 352 nor amplifier 356 is present. In other aspects, one of amplifiers 352 and 356 is present while the other is absent.

[0069] In the illustrated architecture 300, the signals output from phase shifter 354 (via amplifier 352 when present) are combined in combiner 350. Combiner 350 in architecture 300 combines RF signals into a single signal. Combiner 350 can be a passive combiner (e.g., not connected to a power supply), which may introduce some insertion loss. Combiner 350 can also be an active combiner (e.g., connected to a power supply), which may introduce some signal gain. When combiner 350 is an active combiner, it can provide different (e.g., configurable) gain amounts for each input signal so that the input signals have the same amplitude when combined. When combiner 350 is an active combiner, it may not require a second amplifier 352 because the active combiner can provide signal amplification.

[0070] The output of combiner 350 is input to mixers 348 and 346. Mixers 348 and 346 typically use local oscillators 372 and 370, respectively, to down-convert the received RF signals to generate intermediate or baseband signals carrying encoded and modulated information. The outputs of mixers 348 and 346 are input to analog-to-digital converter (ADC) 344 for conversion to digital signals. The digital signal output from ADC 344 is input to modem 302 for baseband processing, such as decoding, deinterleaving, etc.

[0071] Architecture 300 is given by way of example only to illustrate an architecture for transmitting and / or receiving signals. In some cases, architecture 300 and / or each part of architecture 300 may be repeated multiple times within the architecture to accommodate or provide any number of RF chains, antenna elements, and / or antenna panels. Furthermore, numerous alternative architectures are possible and contemplated. For example, although only a single antenna array 318 is shown, two, three, or more antenna arrays may be included, each having its own corresponding amplifier, phase shifter, splitter, mixer, DAC, ADC, and / or modem, one or more of these. For example, a single UE may include two, four, or more antenna arrays at different physical locations on the UE or in different directions for transmitting or receiving signals.

[0072] Furthermore, mixers, splitters, amplifiers, phase shifters, and other components can be located in different signal type regions in different implementation architectures (e.g., indicated by different reference numerals in figures 322, 324, 326, 328). For example, in different examples, splitting the signal to be transmitted into multiple signals can occur at analog RF, analog IF, analog baseband, or digital baseband frequencies. Similarly, amplification and / or phase shifting can also occur at different frequencies. For example, in some aspects, one or more of splitter 310, amplifiers 312, 316, or phase shifter 314 can be located between DAC 304 and the first mixer 306 or between the first mixer 306 and the second mixer 308. In one example, the functionality of one or more components can be combined into one component. For example, phase shifter 314 can perform amplification to include or replace the first and / or second amplifiers 312, 316. As another example, the phase shifter can be implemented by the second mixer 308 to eliminate the need for a separate phase shifter 314. This technique is sometimes referred to as local oscillator (LO) phase shifting. In some aspects of this configuration, there may be multiple IF-RF mixers within the second mixer 308 (e.g., for each antenna element chain), and the local oscillator B 332 may provide a different local oscillator signal (with different phase shifts) to each IF-RF mixer.

[0073] Modem 302 and / or controller / processor 334 can control one or more of other components 304 to 372 to select one or more antenna elements 320 and / or form a beam for transmitting one or more signals. For example, antenna element 320 can be individually selected or deselected for transmitting a signal (or multiple signals) by controlling the amplitude of one or more corresponding amplifiers (e.g., first amplifier 312 and / or second amplifier 316). Beamforming involves generating a beam using multiple signals on different antenna elements, wherein one or more of the multiple signals are phase-shifted relative to each other. The formed beam can carry physical layer or higher layer reference signals or information. Since each of the multiple signals is radiated from a corresponding antenna element 320, the radiated signals interact, interfere (constructive and destructive interference), and amplify with each other to form the resulting beam. Shape (e.g., amplitude, width, and / or the presence of sidelobes) and orientation (e.g., the angle of the beam relative to the surface of antenna array 318) can be dynamically controlled by modifying the phase shift or phase offset applied by phase shifter 314 and the amplitudes applied by amplifiers 312, 316 of multiple signals relative to each other. The controller / processor 334 may be partially or wholly located within one or more other components of architecture 300. For example, in some aspects, the controller / processor 334 may be located within modem 302.

[0074] As indicated above, Figure 3 This is provided as an example. Other examples may differ from the one provided. Figure 3 The example described.

[0075] Figure 4 This is a diagram illustrating an example 400 of a synchronization signal (SS) hierarchy according to this disclosure. Figure 4 As shown, the SS hierarchy may include an SS burst set 405, which may include multiple SS bursts 410, shown as SS burst 0 to SS burst 410. N –1, where N This is the maximum number of repetitions of the SS burst 410 that the base station can send. As further shown, each SS burst 410 may include one or more SS blocks (SSBs) 415, shown as SSB 0 to SSB 415. M -1, where M This is the maximum number of SSBs 415 that an SSB burst 410 can carry. In some respects, different SSBs 415 can be beamformed in different ways (e.g., transmitted using different beams) and can be used for cell search, cell acquisition, beam management, beam selection, etc. (e.g., as part of the initial network access process). The SS burst set 405 can be transmitted periodically by a radio node (e.g., base station 110), for example, every...X Milliseconds sent, such as Figure 4 As shown in the diagram. In some aspects, the SS burst set 405 can have a fixed or dynamic length. Figure 4 The middle is shown as Y Milliseconds. In some cases, SSB burst set 405 or SS burst 410 may be referred to as the Discovery Reference Signal (DRS) transmission window, SSB Measurement Time Configuration (SMTC) window, etc.

[0076] In some aspects, SSB 415 may include resources carrying PSS 420, SSS 425, Physical Broadcast Channel (PBCH) 430, etc. In some aspects, multiple SSBs 415 are included in SS burst 410 (e.g., transmissions on different beams), and each SSB 415 across SS burst 410 may be identical for PSS 420, SSS 425, and / or PBCH 430. In some aspects, a single SSB 415 may be included in SS burst 410. In some aspects, the length of SSB 415 may be at least four symbols (e.g., OFDM symbols), where each symbol carries one or more of PSS 420 (e.g., occupying one symbol), SSS 425 (e.g., occupying one symbol), and / or PBCH 430 (e.g., occupying two symbols). In some aspects, SSB 415 may be referred to as an SS / PBCH block.

[0077] In some respects, the notation for SSB 415 is consecutive, such as... Figure 4 As shown in the diagram. In some aspects, the symbols of SSB 415 are discontinuous. Similarly, in some aspects, one or more SSBs 415 of SS burst 410 can be transmitted in continuous radio resources (e.g., continuous symbol periods) during one or more time slots. Additionally or alternatively, one or more SSBs 415 of SS burst 410 can be transmitted in discontinuous radio resources.

[0078] In some aspects, SS burst 410 may have a burst period, and the SSB 415 of SS burst 410 may be transmitted by a radio node (e.g., base station 110) according to this burst period. In this case, SSB 415 may be repeated during each SS burst 410. In some aspects, SS burst set 405 may have a burst set period, whereby the radio node transmits SS burst 410 of SS burst set 405 according to a fixed burst set period. In other words, SS burst 410 may be repeated during each SS burst set 405.

[0079] In some aspects, SSB 415 may include an SSB index, which may correspond to the beam used to carry SSB 415. UE 120 may monitor and / or measure SSB 415 using different receive (Rx) beams during the initial network access procedure and / or cell search procedure, etc. Based at least in part on monitoring and / or measurement, UE 120 may indicate one or more SSBs 415 with optimal signal parameters (e.g., RSRP parameters, etc.) to base station 110. Base station 110 and UE 120 may use one or more indicated SSBs 415 to select one or more beams to be used for communication between base station 110 and UE 120 (e.g., for the Random Access Channel (RACH) procedure, etc.). Additionally or alternatively, UE 120 may use SSB 415 and / or the SSB index to determine the cell timing of the cell (e.g., the serving cell) through which it will receive SSB 415.

[0080] As indicated above, Figure 4 This is provided as an example. Other examples may differ from the one provided. Figure 4 The example described.

[0081] Figure 5 These are diagrams illustrating examples 500, 510, and 520 of a beam management process according to this disclosure. Figure 5 As shown, examples 500, 510, and 520 include a UE 120 communicating with a base station 110 in a wireless network (e.g., wireless network 100). However, Figure 5 The devices shown are provided as examples, and the wireless network can support communication and beam management between other devices (e.g., between UE 120 and base station 110 or TRP, between mobile terminal nodes and control nodes, between integrated access and backhaul (IAB) child nodes and IAB parent nodes, between scheduled nodes and scheduling nodes, etc.). In some aspects, UE 120 and base station 110 can be in a connected state (e.g., a Radio Resource Control (RRC) connected state, etc.).

[0082] like Figure 5 As shown, Example 500 may include base station 110 and UE 120 communicating to perform beam management using reference signals (e.g., SSB or Channel State Information Reference Signal (CSI-RS)). Example 500 depicts a first beam management procedure (e.g., P1 CSI-RS beam management). This first beam management procedure may be referred to as a beam selection procedure, an initial beam acquisition procedure, a beam scanning procedure, a cell search procedure, a beam search procedure, etc. Figure 5As shown in Example 500, a reference signal can be configured to be transmitted from base station 100 to UE 120. The reference signal can be configured to be periodic (e.g., using RRC signaling, etc.), semi-persistent (e.g., using Media Access Control (MAC) Control Element (MAC-CE) signaling, etc.) and / or non-periodic (e.g., using Downlink Control Information (DCI), etc.).

[0083] The first beam management process may include base station 110 performing beam scanning on multiple transmit (Tx) beams. The transmit beams may be beams or Transmission Configuration Indicator (TCI) states used by wireless communication devices (e.g., base station 110 or UE 120) to transmit signals. For example, base station 110 may use each transmit beam associated with base station 110 to transmit a reference signal for beam management. To enable UE 120 to perform receive (Rx) beam scanning (e.g., the receive beam may be beams, TCI states, and / or spatial relation information used by wireless communication devices (e.g., base station 110 or UE 120) to receive signals), base station 110 may use the transmit beams to transmit (e.g., using repetition) each reference signal multiple times within the same resource set, allowing UE 120 to scan the receive beam in multiple transmission instances. For example, if base station 110 has a set of... N Each transmit beam and UE 120 has a set of M If there is a receiving beam, the reference signal can be... N Transmit on each of the transmit beams M This allows UE 120 to receive the reference signal for each transmitted beam. M In other words, for each transmit beam of base station 110, UE 120 can perform a beam scan of UE 120's receive beam. Therefore, the first beam management procedure enables UE 120 to measure reference signals on different transmit beams using different receive beams, supporting the selection of base station 110 transmit beam / UE 120 receive beam pairs. UE 120 can report the measurements to base station 110 so that base station 110 can select one or more beam pairs for communication between base station 110 and UE 120.

[0084] like Figure 5 As shown, Example 510 may include base station 110 and UE 120 communicating to perform beam management using a reference signal. Example 510 depicts a second beam management process (e.g., P2 CSI-RS beam management). This second beam management process may be referred to as a beam refinement process, a base station beam refinement process, a TRP beam refinement process, a transmit beam refinement process, etc. Figure 5As shown in Example 510, a reference signal can be configured to be transmitted from base station 100 to UE 120. The reference signal can be configured to be aperiodic (e.g., using DCI, etc.). A second beam management process can include base station 110 performing beam scanning on one or more transmit beams. These one or more transmit beams can be a subset of all transmit beams associated with base station 110 (e.g., determined at least in part based on measurements reported by UE 120 in conjunction with the first beam management process). Base station 110 can use each of these one or more transmit beams to transmit the reference signal for beam management. UE 120 can use a single (e.g., identical) receive beam (e.g., determined at least in part based on measurements performed in conjunction with the first beam management process) to measure each reference signal. The second beam management process can enable base station 110 to select the optimal transmit beam at least in part based on measurements of the reference signal reported by UE 120 (e.g., measured by UE 120 using that single receive beam).

[0085] like Figure 5 As shown, Example 520 depicts a third beam management process (e.g., P3 CSI-RS beam management). This third beam management process can be referred to as a beam refinement process, a UE beam refinement process, a receive beam refinement process, etc. Figure 5 As shown in Example 520, one or more reference signals may be configured to be transmitted from base station 110 to UE 120. The reference signals may be configured to be aperiodic (e.g., using DCI, etc.). A third beam management procedure may include base station 110 transmitting the one or more reference signals using a single transmit beam (e.g., determined at least in part based on measurements reported by UE 120 in conjunction with the first and / or second beam management procedures). To enable UE 120 to perform beam scanning, the base station may transmit (e.g., using repetition) the reference signals multiple times within the same resource set using the transmit beam, so that UE 120 may scan 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 UE 120 (e.g., determined at least in part based on measurements performed in conjunction with the first and / or second beam management procedures). The third beam management process enables base station 110 and / or UE 120 to select the optimal receive beam based at least in part on reported measurements received from UE 120 (e.g., measurements of a reference signal of the transmit beam using one or more receive beams).

[0086] As indicated above, Figure 5 This is provided as an example of a beam management process. Other examples of beam management processes may differ from the one described above. Figure 5Examples described. For instance, UE 120 and base station 110 may perform a third beam management procedure before performing a second beam management procedure, UE 120 and base station 110 may perform a similar beam management procedure to select the UE transmit beam, and so on.

[0087] Figure 6 These are diagrams illustrating examples 600, 610, and 620 of a beam management process according to this disclosure. Figure 6 As shown, Examples 600, 610, and 620 include a UE communicating with a base station in a wireless network (e.g., wireless network 100). However, Figure 6 The devices shown are provided as examples, and the wireless network can support communication and beam management between other devices (e.g., between the UE and the base station or TRP, between the mobile terminal node and the control node, between the IAB child node and the IAB parent node, and / or between the scheduled node and the scheduling node, etc.). In some aspects, the UE and the base station can be in a connected state (e.g., RRC connected state, etc.).

[0088] like Figure 6 As shown, Example 600 may include a base station and a UE communicating to perform beam management using a reference signal (e.g., a sounding reference signal (SRS)). Example 600 depicts a first beam management process (e.g., U1 beam management). The first beam management process may be referred to as a beam selection process, an initial beam acquisition process, a beam scanning process, a beam search process, etc. Figure 6 As shown in Example 600, SRS can be configured to be transmitted from the UE to the base station. SRS can be configured to be periodic (e.g., using RRC signaling, etc.), semi-persistent (e.g., using MAC-CE signaling, etc.), and / or aperiodic (e.g., using DCI, etc.).

[0089] The first beam management process may include the UE performing beam scanning on multiple Tx beams. The UE can use each transmit beam to send SRS for beam management. To enable the base station to perform Rx beam scanning, the UE can use the transmit beam to send (e.g., using repetition) each SRS multiple times within the same reference signal (RS) resource set, allowing the base station to scan the receive beam in multiple transmission instances. For example, if the UE has a set of N Each transmit beam and the base station has a set of M If there are multiple receiving beams, then SRS can... N Transmit on each of the transmit beams M This allows the base station to receive SRS signals for each transmitted beam. MThis is an example. In other words, for each transmit beam of the UE, the base station can perform a beam scan of the base station's receive beam. Therefore, the first beam management procedure enables the base station to measure the SRS on different transmit beams using different receive beams to support the selection of UE transmit beam / base station receive beam pairs. The base station can select one or more beam pairs for communication between the base station and the UE. Although Example 600 is described in conjunction with SRS, the first beam management procedure can also use other types of reference signals to perform beam management in a similar manner as described above.

[0090] like Figure 6 As shown, Example 610 may include a base station and a UE communicating to perform beam management using SRS. Example 610 depicts a second beam management process (e.g., U2 beam management). This second beam management process may be referred to as a beam refinement process, a beam thinning process, a transmit beam refinement process, etc. Figure 6 As shown in Example 610, the SRS can be configured to be transmitted from the UE to the base station. The SRS can be configured to be aperiodic (e.g., using DCI, etc.). The second beam management procedure may include the UE performing a beam scan on one or more transmit beams. The one or more transmit beams may be a subset of all transmit beams associated with the UE (e.g., determined at least in part based on measurements reported by the base station in conjunction with the first beam management procedure). This subset of all transmit beams may be a relatively narrow beam compared to the transmit beams used in the first beam management procedure.

[0091] The UE can use each of the one or more transmit beams to transmit SRS for beam management. The base station can use a single (e.g., identical) receive beam (e.g., determined at least in part based on measurements performed in conjunction with the first beam management procedure) to measure each SRS. The second beam management procedure allows the UE to select the optimal transmit beam at least in part based on measurements of the SRS reported by the base station (e.g., measured by the base station using that single receive beam).

[0092] like Figure 6 As shown, Example 620 depicts a third beam management process (e.g., U3 beam management). This third beam management process can be referred to as a beam refinement process, a base station beam refinement process, a receive beam refinement process, etc. Figure 6As shown in Example 620, one or more SRSs can be configured to be transmitted from the UE to the base station. The SRSs can be configured to be aperiodic (e.g., using DCI, etc.). The third beam management procedure may include the UE transmitting the one or more SRSs using a single transmit beam (e.g., determined at least in part based on measurements reported by the UE in conjunction with the first and / or second beam management procedures). The single transmit beam may be a relatively narrow beam compared to the transmit beam used in the first beam management procedure.

[0093] To enable the base station to perform beam scanning, the UE can transmit (e.g., using repetition) SRS multiple times within the same RS resource set using the transmit beam, allowing the base station to scan one or more receive beams across multiple transmission instances. These one or more receive beams can be a subset of all receive beams associated with the base station (e.g., determined at least in part based on measurements performed in conjunction with a first beam management procedure and / or a second beam management procedure). A third beam management procedure can enable the base station to select the optimal receive beam at least in part based on measurements of the SRS of the transmit beam using the one or more receive beams.

[0094] As indicated above, Figure 6 This is provided as an example of a beam management process. Other examples of beam management processes may differ from the one described above. Figure 6 The described example is that the UE and the base station can perform a third beam management procedure before performing a second beam management procedure, and so on.

[0095] Some wireless networks (e.g., millimeter-wave wireless networks) can be beamforming systems because wireless communication devices within such networks can use beams to communicate. For example, base station 110 and UE 120 can communicate using uplink beams, downlink beams, and / or beam pairs (e.g., a transmitter's transmit beam and a receiver's receive beam). For example, for downlink communication, base station 110 and UE 120 can communicate using downlink beams or beam pairs including a base station transmit beam and a UE receive beam. Similarly, for uplink communication, base station 110 and UE 120 can communicate using uplink beams or beam pairs including a base station receive beam and a UE transmit beam. In some aspects, beam pairs can be used for both uplink and downlink communication (e.g., the base station transmit beam and receive beam in the above example can be the same beam).

[0096] As described above, UE 120 and base station 110 can perform beam management procedures (e.g., in conjunction with...). Figure 5 and / or Figure 6The described beam management process identifies the beam or beam pair for communication between UE 120 and base station 110. For example, UE 120 may use candidate receive beam sets at different times to measure the signal transmitted by base station 110 (e.g., using transmit beam sets) to identify the optimal beam or beam pair for communication (e.g., based on beam parameters such as RSRP, signal-to-noise ratio (SNR), cell selection criterion parameters (e.g., S-criterion parameters), and / or RSRQ, etc.). Similarly, for uplink communication, UE 120 may perform a beam management process (e.g., in conjunction with...) Figure 6 The described beam management process is used to identify beams or beam pairs used for uplink communication.

[0097] UE 120 can measure different transmit and receive beams, as described above, and can store values ​​of beam parameters for different beams (e.g., RSRP for downlink or the UE's maximum transmit power for uplink, e.g., ...). Pmax UE 120 can select a serving beam (e.g., the beam used by UE 120 to transmit and / or receive communications) based on measurements. Similarly, UE 120 can use the stored values ​​described above to send measurement reports (e.g., Layer 1 (L1) beam measurement reports and / or Layer 3 (L3) cell measurement reports) to base station 110. The measurement reports enable base station 110 to make beam management and / or cell management decisions.

[0098] UE 120 may maintain (e.g., store) the values ​​of beam parameters used for different beams (e.g., in UE 120's modem). This is important in high mobility or fading environments where UE 120 may need to switch beams due to an interruption on the selected serving beam or beam pair. For example, in some aspects, if UE 120 determines that a different beam has better beam parameter values ​​(e.g., a better RSRP value or a better Pmax value), UE 120 may update or switch the serving beam of UE 120. For example, a beam may become blocked, such as when an obstacle interrupts the beam's propagation path. Beam blocking can cause a sudden drop in the useful signal strength received for a beam and / or one or more adjacent beams in the beam set that includes that beam (e.g., below a threshold, such as noise floor). This reduction in signal strength may occur over a period of time across the entire system bandwidth on those beams (e.g., rather than being isolated to one or more frequencies). A decrease in signal strength can lead to communication errors, such as lost communication, failed reception, failed demodulation and / or failed decoding, etc.

[0099] In some examples, when UE 120 detects a decrease in the signal strength of the serving beam, if UE 120 determines that a different beam has better beam parameter values ​​(e.g., using the stored values ​​as described above), UE 120 can determine to update or switch its serving beam. In some examples, UE 120 can update or switch its serving beam autonomously (e.g., without notifying base station 110). For example, for downlink communication, if UE 120 determines that the signal strength of its serving beam has decreased, UE 120 can switch to a different serving beam (e.g., a different receive beam) at least in part based on the stored values ​​of the beam parameters of the different beam previously executed by UE 120 (e.g., as described above). UE 120 can use the new or updated serving beam of UE 120 (e.g., using a new or updated receive beam) to receive communication from base station 110 (e.g., communication transmitted using the same transmit beam of base station 110).

[0100] However, in some cases, the serving beam of base station 110 may become blocked. UE 120 may not be aware that the serving beam of base station 120 is blocked. Alternatively, UE 120 may rely on stored measurements to switch to a different serving beam of UE 120 (and continue to communicate using the blocked serving beam of base station 110), as described above. Continued use of the blocked serving beam of base station 110 may result in communication errors, such as lost communication, failed reception, failed demodulation and / or failed decoding, etc., due to the use of the blocked serving beam of base station 110. Additionally, when UE 120 switches to a different serving beam of UE 120, UE 120 may send a measurement report (e.g., a Layer 1 measurement report) indicating beam measurements based at least in part on stored measurements (e.g., measurements performed before the blocking of the serving beam of base station 110). Therefore, UE 120 may indicate incorrect or outdated measurements, rather than indicating poor measurements due to beam blocking. Therefore, base station 110 may not be aware that its serving beam is blocked and may not switch to a different serving beam (e.g., a different transmit beam of base station 110).

[0101] Furthermore, UE 120 may continue to report measurement values ​​for multiple beams (e.g., in a Layer 1 measurement report) using potentially stale or obsolete stored values ​​associated with the multiple beams (e.g., based on measurements performed before blocking or signal strength degradation, as described above). In some cases, multiple beams associated with base station 110 become blocked or otherwise experience signal strength degradation. Therefore, even if base station 110 becomes aware that the signal strength of the serving beam has decreased (e.g., due to blocking), base station 110 may switch its serving beam to another beam that is also blocked (e.g., because UE 120 sent a Layer 1 measurement report indicating stale or obsolete values, as described above).

[0102] Furthermore, UE 120 can use the stored values ​​of the beam to report potentially outdated or obsolete cell measurement reports (e.g., Layer 3 cell measurement reports, which may be based on measurements performed before obstruction or signal strength degradation, as described above). Therefore, if the serving cell becomes obstructed, UE 120 may continue to report outdated or obsolete values ​​stored by UE 120 for the cell. Consequently, the base station 110 associated with the serving cell may not be aware that the serving cell is obstructed and may not initiate a handover to a different cell. Therefore, UE 120 may experience communication errors, such as lost communication, failed reception, failed demodulation and / or failed decoding, etc.

[0103] Some of the techniques and apparatus described herein implement improved beam management performed by UE 120. UE 120 can use a set of candidate beams to measure signals (e.g., SSBs) transmitted by base station 110. For an SSB, UE 120 can identify the serving beam from the set of candidate beams based at least in part on the measurement. UE 120 can similarly identify the serving beam from the set of candidate beams for each beam associated with base station 110 (e.g., each SSB index). UE 120 can periodically monitor the serving beam to ensure that the measurements of the serving beam do not become outdated (e.g., UE 120 can measure the serving beam according to a periodic schedule).

[0104] If UE 120 determines that its serving beam should be switched (e.g., due to a decrease in the signal strength of the serving beam), UE 120 can identify one or more beams to replace the serving beam (e.g., UE 120 can identify one or more beams with better beam parameter values ​​than the current serving beam based on stored values). UE 120 can measure the one or more beams to confirm that at least one beam meets the beam switching conditions (e.g., confirming that the at least one beam has a better signal strength than the current serving beam with power hysteresis). If the measurement of the one or more beams confirms that the beam switching conditions are met for at least one beam, UE 120 can switch the serving beam to a second beam (e.g., at least one beam included in the one or more beams). If the measurement of the one or more candidate beams does not confirm that the beam switching conditions are met for at least one beam, UE 120 may not switch the serving beam.

[0105] Therefore, UE 120 ensures that the serving beam is selected based on the current or most recent measurements performed by UE 120. Furthermore, UE 120 ensures that the serving beam will not be switched to a different beam experiencing a similar signal drop if the serving beam experiences a signal drop. Thus, by using the beam parameter values ​​of the serving beam to compile a measurement report to be sent to base station 110, UE 120 ensures that base station 110 can make improved beam management or cell management decisions when UE 120 experiences a signal drop associated with its serving beam. Therefore, communication errors that UE 120 would otherwise experience, such as lost communication, failed reception, failed demodulation and / or failed decoding, etc., can be eliminated or reduced.

[0106] In some aspects, UE 120 may send a measurement report to base station 110 that is at least partially based on the beam parameter values ​​of the serving beam of UE 120. For example, UE 120 may sort beams at least partially based on the beam parameters of the serving beam and may send a Layer 1 beam measurement report indicating the optimal beam set. UE 120 may average the optimal beam set of the cell and may send a Layer 3 cell measurement report to base station 110.

[0107] Figure 7 This is a diagram illustrating an example 700 related to beam management according to this disclosure. (See diagram for example.) Figure 7 As shown, base station 110 and UE 120 can communicate with each other in a wireless network (e.g., wireless network 100). Base station 110 and UE 120 can communicate via a wireless access link (which may include an uplink and a downlink).

[0108] As shown by reference numeral 705, UE 120 can use a candidate beam set to measure signals transmitted by base station 110. For example, base station 110 can transmit an SSB to UE 120. UE 120 can use the candidate beam set (e.g., a candidate receive beam set) to measure the SSB to determine the values ​​of beam parameters (e.g., RSRP, SNR, or RSRQ, etc.) for each candidate beam included in the candidate beam set. UE 120 can perform similar measurements for each beam associated with base station 110 (e.g., each SSB index). For example, as described above... Figure 4 As described, the SSB may include an SSB index, which may correspond to a beam used to carry the SSB. The UE 120 may use different receive beams to monitor and / or measure the SSB. The UE 120 may determine and store beam parameter values ​​for different receive beams for each SSB index.

[0109] As indicated by reference numeral 710, UE 120 can identify a set of serving beams (e.g., one or more serving beams) for UE 120 based at least in part on the measurements described above. For example, for an SSB index, UE 120 can identify candidate beams with optimal beam parameter values ​​from a set of candidate beams. UE 120 can select a candidate beam with optimal beam parameter values ​​as the serving beam associated with the SSB index. In some aspects, UE 120 can identify the serving beam for each beam (e.g., each SSB index) associated with base station 110 in a similar manner. In some aspects, UE 120 can identify a subset of beams with optimal beam parameter values ​​from a set of candidate beams. UE 120 can select the subset of beams with optimal beam parameter values ​​as the serving beam associated with the beam corresponding to the SSB index. In some aspects, the set of serving beams can be referred to as a virtual set of serving beams. In some aspects, the set of serving beams can include one or more receive beams of UE 120 (e.g., in combination with those described above). Figure 5 (similar to the described manner) and / or one or more transmit beams of UE 120 (e.g., in combination with the above) Figure 6 (Similar to the described method).

[0110] UE 120 may send one or more measurement reports to base station 110 based at least in part on the measurements described above. For example, based at least in part on monitoring and / or measuring SSBs, UE 120 may indicate one or more SSBs with optimal beam parameters to base station 110. Base station 110 and UE 120 may use one or more indicated SSBs to select one or more beams to be used for communication between base station 110 and UE 120. Additionally or alternatively, UE 120 may use SSBs and / or SSB indexes to determine cell timing of the cell (e.g., serving cell) through which it receives SSBs.

[0111] As shown by reference numeral 715, UE 120 and base station 110 can communicate using service beams included in the service beam set. In some aspects, the service beam can be the beam used by UE 120 to transmit measurement reports (e.g., Layer 1 measurement reports and / or Layer 3 measurement reports). For example, base station 110 can select the beam or beam pair for communication between UE 120 and base station 110 based at least in part on measurements reported from UE 120. For example, base station 110 can indicate or activate a TCI state for communication between UE 120 and base station 110. The TCI state can have a quasi-co-location (QCL) relationship with an SSB transmitted by base station 110 (e.g., an SSB associated with a service beam included in the service beam set with optimal beam parameter values). In some aspects, UE 120 can receive one or more communications from base station 110 (e.g., in the downlink) using the service beam. In some aspects, UE 120 may use the serving beam to send one or more communications to base station 110 (e.g., in the uplink).

[0112] As shown by reference numeral 720, UE 120 can monitor a set of serving beams. For example, UE 120 can periodically measure each serving beam included in the set of serving beams. In some aspects, UE 120 can use the corresponding serving beam from the set of serving beams to periodically measure each beam associated with base station 110 (e.g., each SSB index). In some aspects, UE 120 can measure the serving beams every 60 milliseconds, every 80 milliseconds, or every 100 milliseconds, etc. In some aspects, the time period associated with measuring the set of serving beams can be shorter than the time period associated with measuring and / or monitoring other beams associated with UE 120. For example, UE 120 can measure the set of serving beams more frequently than other beams associated with UE 120. In this way, UE 120 can prioritize the serving beam set (e.g., candidate beams from the serving beam set with optimal beam parameter values ​​for each SSB index) to ensure that the measurements of the serving beam set stored by UE 120 are recent and accurate. This enables UE 120 to use recent and accurate measurements of the serving beam set to make beam management decisions and / or report measurements to base station 110.

[0113] As indicated by reference numeral 725, UE 120 may determine the serving beams included in the set of serving beams to be switched. For example, UE 120 may determine that the serving beam is experiencing a signal strength decrease. In some aspects, UE 120 may determine that the beam parameter values ​​of a second beam (e.g., stored by UE 120 and based at least in part on previously performed measurements, such as those described above in conjunction with reference numeral 705) satisfy beam switching conditions. For example, a beam switching condition may be that the beam parameter values ​​of the second beam exceed the beam parameter values ​​of the serving beam by a threshold amount. In some aspects, UE 120 may determine to switch serving beams at least in part based on the determination that the beam parameter values ​​of the serving beam do not satisfy a threshold.

[0114] As shown by reference numeral 730, UE 120 may measure one or more beams at least in part based on determining the serving beam. For example, UE 120 may use the one or more beams to measure the SSB (which includes the SSB index associated with the serving beam). UE 120 may determine beam parameter values ​​associated with the one or more beams at least in part based on measuring the SSB using the one or more beams. In some aspects, UE 120 may use a second beam to measure the SSB at least in part based on determining that the second beam satisfies beam switching conditions, as described above.

[0115] As indicated by reference numeral 735, if the measurement (described above in conjunction with reference numeral 730) confirms that the beam switching conditions are met, UE 120 may switch the serving beam to a different beam (e.g., a second beam or a beam included in one or more of the aforementioned beams). If the measurement (described above in conjunction with reference numeral 730) does not confirm that the beam switching conditions are met, UE 120 may not switch or update the serving beam. For example, as described above, UE 120 may initially determine that the second beam meets the beam switching conditions based at least in part on the stored beam parameter values ​​of the second beam. UE 120 may use the second beam to measure the SSB (or other reference signal) to determine new or updated values ​​of the beam parameters of the second beam. If the new or updated values ​​of the beam parameters of the second beam still meet the beam switching conditions, UE 120 may switch the serving beam to the second beam. If the new or updated values ​​of the beam parameters of the second beam no longer meet the beam switching conditions, UE 120 may not switch the serving beam to the second beam.

[0116] UE 120 can determine each serving beam included in the serving beam set in a similar manner as described above. In this way, UE 120 can ensure that beam handover decisions associated with a serving beam are based at least in part on the most recent and accurate measurements. Using the most recent and accurate measurements ensures that UE 120 will not switch the serving beam to a different beam that is experiencing a similar signal strength decline as the serving beam (e.g., due to beam blocking).

[0117] As shown by reference numeral 740, UE 120 may send one or more measurement reports to base station 110, which are at least partially based on measurements of the serving beam set (e.g., beam parameter values). For example, UE 120 may send a Layer 1 beam measurement report. UE 120 may sort the serving beam set at least partially based on the measurements of the serving beam set. UE 120 may select one or more optimal serving beams (e.g., using Layer 1 filtering) at least partially based on the sorting of the serving beam set. T The best service beam, among which T The value is defined by a wireless communication standard (e.g., 3GPP specifications) or otherwise fixed. UE 120 can send a Layer 1 beam measurement report indicating the measurement values ​​of one or more optimal serving beams. UE 120 can determine and / or compile Layer 1 beam measurement reports in accordance with wireless communication standards (such as 3GPP specifications).

[0118] As described above, UE 120 may not switch or update the serving beam unless subsequent measurements confirm that a switch and / or update of the serving beam is necessary. Therefore, the Layer 1 beam measurement report sent to base station 110 will indicate the current and accurate measurements of the serving beam set. For example, UE 120 will not use outdated or obsolete measurements of different beams to switch the serving beam to a different beam and subsequently send a Layer 1 beam measurement report indicating the outdated or obsolete measurements of that different beam. Therefore, base station 110 can quickly identify signal strength degradation and / or beam blocking and can make improved beam management decisions, as described in more detail below.

[0119] In some aspects, UE 120 can send Layer 3 cell measurement reports to base station 110. For example, UE 120 can identify one or more best serving beams in the cell (e.g., in the cell). P The best service beam, among which P The value is a measurement defined by wireless communication standards (such as 3GPP specifications) or otherwise fixed. It is at least partly based on the ordering of the serving beam set in a manner similar to that described above. P The value can be with T The values ​​(as described above) may be the same or different. UE 120 can determine the average value of the beam parameters of one or more best serving beams in the cell (e.g., using Layer 3 filtering). For example, UE 120 can average the beam parameter values ​​of one or more best serving beams in the cell. UE 120 can send a Layer 3 cell measurement report indicating the average value of one or more best serving beams in the cell. UE 120 can determine and / or compile the Layer 3 cell measurement report in accordance with wireless communication standards (such as 3GPP specifications).

[0120] As described above, UE 120 may not switch or update the serving beam unless subsequent measurements confirm that the serving beam should be switched and / or updated. Therefore, the Layer 3 cell measurement report sent to base station 110 will indicate the current and accurate measurements of the serving beam included in the cell. For example, UE 120 will not use outdated or obsolete measurements of a different beam to switch the serving beam to that different beam and subsequently send a Layer 3 cell measurement report indicating the outdated or obsolete measurements of that different beam. Therefore, base station 110 can quickly identify signal strength degradation and / or beam blocking and can make improved beam management decisions, as described in more detail below.

[0121] As shown by reference numeral 745, base station 110 can determine, at least in part, whether to switch the serving beam or active TCI state associated with communication between UE 120 and base station 110 and / or whether to initiate cell handover based on measurement reports sent by UE 120. For example, base station 110 can determine, at least in part, whether to switch the serving beam or active TCI state associated with communication between UE 120 and base station 110 based on Layer 1 beam measurement reports sent by UE 120. Since UE 120 may not switch the serving beam associated with UE 120 (unless subsequent measurements confirm that the serving beam should be switched), if the beam associated with the active TCI state becomes blocked, the Layer 1 beam measurement report will indicate a bad beam parameter value for that beam. Therefore, base station 110 can quickly identify a beam associated with the active TCI state that is associated with a bad beam parameter value and / or that the beam is blocked. Furthermore, since UE 120 can maintain and / or switch the serving beam of each beam (e.g., each SSB index) associated with base station 110 in a similar manner, if any other beam associated with base station 110 (e.g., associated with a different SSB index) becomes blocked (or otherwise experiences signal strength degradation), the Layer 1 beam measurement report will indicate the undesirable beam parameter values ​​of the other blocked beams. Therefore, base station 110 can quickly identify the optimal beam and make improved beam management decisions.

[0122] For example, base station 110 can quickly identify, at least in part, a beam (or active TCI state) used for communication between UE 120 and base station 110 (e.g., associated with an active TCI state) that has become blocked and / or is otherwise experiencing a decrease in signal strength, based on Layer 1 beam management reports. Base station 110 can also identify, at least in part, other beams that have also become blocked and / or are otherwise experiencing a similar decrease in signal strength (e.g., associated with other TCI states), based on Layer 1 beam measurement reports. Therefore, base station 110 can quickly identify that the active beam (or active TCI state) used for communication between UE 120 and base station 110 should be switched. Furthermore, base station 110 can quickly identify other beams (or other TCI states) experiencing similar blocking and / or similar decreases in signal strength. Therefore, base station 110 can quickly switch or update the active beam (or active TCI state) used for communication between UE 120 and base station 110.

[0123] Additionally, base station 110 can avoid switching or updating the active beam (or active TCI beam) to another beam (or other TCI state) experiencing similar obstruction and / or similar signal strength degradation as the active beam. For example, base station 110 can use a Layer 1 beam measurement report to identify a new beam (or new TCI state), as described above. Base station 110 can send an indication of the new beam (or new TCI state) (e.g., using MAC-CE signaling, etc.). Base station 110 and UE 120 can communicate using the new beam (or new TCI state). Therefore, communication errors that UE 120 might otherwise experience (e.g., lost communication, failed reception, failed demodulation and / or failed decoding, etc.) can be eliminated or reduced when the active beam (or active TCI state) is not switched and / or when the active beam (or active TCI state) is switched to a beam (or TCI state) experiencing similar obstruction and / or similar signal strength degradation as the active beam.

[0124] In some aspects, base station 110 can determine whether to initiate a cell handover based at least in part on a Layer 3 cell measurement report sent by UE 120. For example, if a cell associated with base station 110 (e.g., the serving cell of UE 120) becomes blocked or otherwise experiences a decrease in signal strength, the Layer 3 cell measurement report sent by UE 120 can indicate a poor average value of the beam parameters associated with that cell. Since UE 120 may not update the serving beam (unless subsequent measurements confirm that the serving beam should be switched), the Layer 3 cell measurement report sent by UE 120 can quickly indicate whether UE 120's serving cell has become blocked or otherwise experiences a decrease in signal strength. Therefore, base station 110 can quickly determine whether a handover to a different cell should be initiated based at least in part on the Layer 3 cell measurement report sent by UE 120.

[0125] Base station 110 can send handover commands to UE 120 (e.g., using RRC signaling, etc.). Base station 110 and / or UE 120 can perform a handover procedure to switch or update UE 120's serving cell to a new serving cell. Therefore, when UE 120's serving cell becomes blocked or otherwise experiences a decrease in signal strength, base station 110 can quickly identify that a handover to a new serving cell should be initiated. Thus, communication errors that UE 120 would otherwise experience without a handover or update of the serving cell can be eliminated or reduced, such as lost communication, failed reception, failed demodulation, and / or failed decoding, etc.

[0126] As indicated above, Figure 7 This is provided as an example. Other examples may differ from the one provided. Figure 7 The example described.

[0127] Figure 8 This is a diagram illustrating an exemplary process 800 performed, for example, by a UE, according to this disclosure. Exemplary process 800 is an example in which a UE (e.g., UE 120) performs operations associated with beam management.

[0128] like Figure 8 As shown, in some aspects, process 800 may include: using a candidate beam set to measure the signal transmitted by the base station (block 810). For example, the UE (e.g., using...) Figure 9 The measurement component 908 described herein can use a set of candidate beams to measure the signal transmitted by the base station, as described above. For example, in some aspects, the signal may be an SSB.

[0129] like Figure 8 As further shown, in some aspects, process 800 may include: communicating with a base station using a first beam from a candidate beam set, at least in part based on measurements of the signal (box 820). For example, the UE (e.g., using...) Figure 9 The receiving component 902 and / or transmitting component 904 described herein can communicate with the base station using a first beam from a set of candidate beams, at least in part based on measurements of the signal, as described above. For example, in some aspects, the first beam can be as combined as above. Figure 7 The described UE's service beam.

[0130] like Figure 8 As further shown, in some aspects, process 800 may include: determining to switch the first beam based at least in part on a condition that a first value of the beam parameter associated with the second beam from the candidate beam set satisfies (block 830). For example, the UE (e.g., using...) Figure 9 The determining component 910 described herein may determine the switching of the first beam based at least in part on the condition that a first value of the beam parameter associated with the second beam from the candidate beam set satisfies a condition, as described above.

[0131] like Figure 8 As further shown, in some aspects, process 800 may include: measuring the second beam at least in part based on determining the switching of the first beam to obtain a second value of the beam parameters (box 840). For example, the UE (e.g., using...) Figure 9 The measurement component 908 described herein can measure the second beam, at least in part, based on determining the switching of the first beam to obtain a second value of the beam parameters, as described above.

[0132] like Figure 8As further shown, in some aspects, process 800 may include: switching the first beam to the second beam if a second value of the beam parameter satisfies a condition (box 850). For example, the UE (e.g., using...) Figure 9 The beam switching component 912 described herein can switch the first beam to the second beam if the second value of the beam parameter satisfies the condition, as described above.

[0133] Process 800 may include additional aspects, such as any single aspect or any combination of aspects of one or more other processes described below and / or in conjunction with aspects described elsewhere in this document.

[0134] In the first aspect, process 800 may include: measuring the first beam according to a periodic schedule.

[0135] In a second aspect, either alone or in combination with the first aspect, process 800 includes: determining, at least in part, a beam parameter value for each candidate wave included in the candidate beam set based on measurements of the signal using the candidate beam set; and selecting a first beam from the candidate beam set based at least in part on the beam parameter values ​​for each candidate wave included in the candidate beam set.

[0136] In a third aspect, either alone or in combination with one or more of the first and second aspects, determining to switch the first beam comprises: determining, at least in part, based on a first value and values ​​of beam parameters associated with the first beam, that a condition for switching the first beam to the second beam is satisfied, wherein the first value and the value are obtained at least in part based on measurements of the signal.

[0137] In a fourth aspect, either alone or in combination with the third aspect, switching the first beam to the second beam when the second value of the beam parameter satisfies the condition comprises: determining, at least in part, based on measurements of the second beam, that the condition is still satisfied; and switching the first beam to the second beam, at least in part, based on the determination that the condition is still satisfied.

[0138] In the fifth aspect, either alone or in combination with the third aspect, process 800 includes: determining, at least in part, that a condition is not met based on a second value; and avoiding switching the first beam to the second beam based, at least in part, on the determination that the condition is not met.

[0139] In the sixth aspect, either alone or in combination with one or more of the third to fifth aspects, the first value is a stored value of the beam parameters of the second beam, and determining that the condition for switching the first beam to the second beam is satisfied includes: determining the condition satisfaction based at least in part on a comparison of the stored value of the beam parameters of the second beam with the value of the beam parameters of the first beam.

[0140] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, process 800 includes: sending a measurement report that is at least partially based on the values ​​of beam parameters of one or more serving beams associated with the UE, wherein the first beam is included in the one or more serving beams.

[0141] In the eighth aspect, alone or in combination with the seventh aspect, process 800 includes: sorting the one or more serving beams at least in part based on beam parameter values ​​of the one or more serving beams; and selecting a set of serving beams to be included in a measurement report at least in part based on the sorting of the one or more serving beams, wherein sending the measurement report includes: sending a measurement report indicating the values ​​of beam parameters of the set of serving beams.

[0142] In the ninth aspect, whether alone or in combination with the eighth aspect, the measurement report is the layer 1 beam measurement report.

[0143] In the tenth aspect, alone or in combination with the seventh aspect, process 800 includes: sorting the one or more serving beams at least in part based on the values ​​of the beam parameters of the one or more serving beams; selecting a set of serving beams associated with a cell at least in part based on the sorting of the one or more serving beams; and determining an average value of the beam parameters of the cell at least in part based on the values ​​of the beam parameters of the set of serving beams associated with the cell, wherein sending a measurement report includes: sending a measurement report indicating the average value of the beam parameters of the cell.

[0144] In the eleventh aspect, either alone or in combination with the tenth aspect, the measurement report is the layer 3 cell measurement report.

[0145] In the twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the process 800 includes: receiving from a base station, at least in part, an instruction to switch the serving transmit beam associated with the base station to a different transmit beam based on transmitting a measurement report; and switching the serving transmit beam associated with the base station to the different transmit beam for the base station.

[0146] In the thirteenth aspect, either alone or in combination with one or more of the first to twelfth aspects, the process 800 includes: receiving from a base station, at least in part, a handover command instructing the UE to hand over its serving cell to a different cell, based on transmitting a measurement report; and performing a handover from the serving cell to the different cell, at least in part, based on receiving the handover command.

[0147] In the fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, the beam parameter is the reference signal received power parameter.

[0148] In the fifteenth aspect, either alone or in combination with one or more of the first to fourteenth aspects, the beam parameter is the signal-to-noise ratio parameter.

[0149] In the sixteenth aspect, either alone or in combination with one or more of the first to fifteenth aspects, the beam parameter is the maximum transmit power parameter.

[0150] although Figure 8 Example boxes for process 800 are shown, but in some respects, process 800 may include additional boxes, fewer boxes, different boxes, or boxes similar to those shown. Figure 8 The boxes depicted are arranged differently. Alternatively, two or more boxes of process 800 may be executed in parallel.

[0151] Figure 9 This is a block diagram of an exemplary device 900 for wireless communication. Device 900 may be a UE, or a UE may include device 900. In some aspects, device 900 includes a receiving component 902 and a transmitting component 904, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 900 can use the receiving component 902 and the transmitting component 904 to communicate with another device 906 (e.g., a UE, a base station, or another wireless communication device). As further shown, device 900 may include one or more of a measurement component 908, a determination component 910, or a beam switching component 912, etc.

[0152] In some respects, device 900 can be configured to perform the functions described herein. Figure 7 The one or more operations described herein. Alternatively or concurrently, the apparatus 900 may be configured to perform one or more processes described herein, such as... Figure 8 Process 800, or a combination thereof. In some aspects, device 900 and / or Figure 9 One or more components shown may include the combination described above. Figure 2 One or more components of the described UE. Alternatively or alternatively, Figure 9 One or more components shown can be combined above. Figure 2 Implemented within one or more of the described components. Alternatively or additionally, one or more of the components in this group may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of that component.

[0153] Receiver 902 may receive communications from device 906, such as reference signals, control information, data communications, or combinations thereof. Receiver 902 may provide the received communications to one or more other components of device 900. In some aspects, receiver 902 may perform signal processing on the received communications (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signal to the one or more other components of device 906. In some aspects, receiver 902 may include the above-described combinations. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0154] The transmission component 904 can send communications to the device 906, such as reference signals, control information, data communications, or combinations thereof. In some aspects, one or more other components of the device 906 can generate communications and provide the generated communications to the transmission component 904 for transmission to the device 906. In some aspects, the transmission component 904 can perform signal processing (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and can send the processed signals to the device 906. In some aspects, the transmission component 904 can include the above-described combinations. Figure 2 The described UE includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 904 may be co-located with the receive component 902 in a transceiver.

[0155] Measurement component 908 can use a candidate beam set to measure signals transmitted by a base station. In some aspects, measurement component 908 may include the combination described above. Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0156] The receiving component 902 and / or the transmitting component 904 can communicate with the base station using a first beam from the candidate beam set, at least in part based on measurements of the signal. In some aspects, the determining component 910 may include the above-described combination. Figure 2The described UE's controller / processor and / or memory, or a combination thereof. The determining component 910 may determine to switch the first beam based at least in part on a condition that a first value of the beam parameter associated with a second beam from the candidate beam set satisfies a condition. The measuring component 908 may measure the second beam at least in part based on determining to switch the first beam to obtain a second value of the beam parameter. The beam switching component 912 may switch the condition that the second value of the beam parameter satisfies. In some aspects, the beam switching component 912 may include the above-described combination... Figure 2 The described UE includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0157] Measurement component 908 can measure the first beam according to periodic scheduling.

[0158] The determining component 910 can determine the beam parameter values ​​of each candidate beam included in the candidate beam set based at least in part on measurements of the signal using the candidate beam set.

[0159] The determining component 910 can select a first beam from the candidate beam set based at least in part on the beam parameter values ​​of each candidate beam included in the candidate beam set.

[0160] Component 910 determines that the conditions for switching the first beam to the second beam are met.

[0161] The determining component 910 can determine, at least in part, that the conditions are still met based on measurements of the second beam. The beam switching component 912 can switch the first beam to the second beam, at least in part, based on the determination that the conditions are still met.

[0162] The determining component 910 can determine, at least in part, that the condition is no longer met based on measurements of the second beam. The beam switching component 912 can avoid switching the first beam to the second beam, at least in part, based on the determination that the condition is no longer met.

[0163] The transmission component 904 can send a measurement report that is at least in part based on beam parameter values ​​of one or more serving beams associated with the UE, wherein the first beam is included in the one or more serving beams.

[0164] The determining component 910 can sort the one or more serving beams at least in part based on the beam parameter values ​​of the one or more serving beams. The determining component 910 can select the set of serving beams to be included in the measurement report at least in part based on the sorting of the one or more serving beams.

[0165] The determining component 910 can sort the one or more serving beams at least in part based on the beam parameter values ​​of the one or more serving beams. The determining component 910 can select the set of serving beams associated with the cell at least in part based on the sorting of the one or more serving beams. The determining component 910 can determine the average beam parameters of the cell at least in part based on the beam parameter values ​​of the set of serving beams associated with the cell.

[0166] The receiving component 902 can receive, at least in part, an instruction from the base station to switch the serving transmit beam associated with the base station to a different transmit beam based on a transmitted measurement report. The determining component 910 can switch the serving transmit beam associated with the base station to the different transmit beam for the base station.

[0167] The receiving component 902 can receive, at least in part, a handover command from the base station instructing the UE to switch its serving cell to a different cell based on the transmission of a measurement report.

[0168] The determining component 910 can perform a handover from the serving cell to the different cell based at least in part on the receipt of a handover command (or the determining component 910 can cause the receiving component 902 and / or the transmitting component 904 to perform the handover).

[0169] Figure 9 The number and arrangement of components shown are provided as examples. In practice, additional components, fewer components, different components, or components may exist. Figure 9 The components shown are arranged differently. Furthermore, Figure 9 The two or more components shown can be implemented within a single component, or Figure 9 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 9 The set (one or more) components shown can perform actions described by Figure 9 The other set of components shown performs one or more functions.

[0170] Figure 10 This is a block diagram of an exemplary device 1000 for wireless communication. Device 1000 may be a base station, or a base station may include device 1000. In some aspects, device 1000 includes a receiving component 1002 and a transmitting component 1004, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1000 can use the receiving component 1006 and the transmitting component 1004 to communicate with another device 1006 (e.g., a UE, a base station, or another wireless communication device). As further shown, device 1000 may include a determining component 1008, etc.

[0171] In some respects, device 1000 can be configured to perform the functions described herein. Figure 7 The described one or more operations. Additionally or alternatively, device 1000 may be configured to perform one or more processes or combinations thereof described herein. In some aspects, device 1000 and / or Figure 10 One or more components shown may include the combination described above. Figure 2 One or more components of the described base station. Alternatively or alternatively, Figure 10 One or more components shown can be combined above. Figure 2 Implemented within one or more of the described components. Alternatively or additionally, one or more of the components in this group may be implemented at least partially as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the function or operation of that component.

[0172] Receiver 1002 may receive communications from device 1006, such as reference signals, control information, data communications, or combinations thereof. Receiver 1002 may provide the received communications to one or more other components of device 1000. In some aspects, receiver 1002 may perform signal processing on the received communications (e.g., filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signal to the one or more other components of device 1006. In some aspects, receiver 1002 may include the above-described combinations... Figure 2 The described base station includes one or more antennas, demodulators, MIMO detectors, receiver processors, controllers / processors, memory, or combinations thereof.

[0173] The transmission component 1004 can send communications to the device 1006, such as reference signals, control information, data communications, or combinations thereof. In some aspects, one or more other components of the device 1006 can generate communications and provide the generated communications to the transmission component 1004 for transmission to the device 1006. In some aspects, the transmission component 1004 can perform signal processing (e.g., filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and can transmit the processed signals to the device 1006. In some aspects, the transmission component 1004 may include the above-described combinations... Figure 2 The described base station includes one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers / processors, memory, or combinations thereof. In some aspects, the transmit component 1004 may be co-located with the receive component 1002 in a transceiver.

[0174] The transmission component 1004 can transmit signals to the UE that will be measured by the UE. The receiving component 1002 can receive measurement reports from the UE. The determining component 1008 can determine the beam to be used for communication between the base station and the UE. In some aspects, the determining component 1008 may include the combination of the above. Figure 2 The described base station's controller / processor and / or memory, or a combination thereof. Determining component 1008 can determine, at least in part, based on a measurement report, that the beam used for communication between the base station and the UE should be switched. Determining component 1008 can determine, at least in part, based on a measurement report, that a new beam used for communication between the base station and the UE should be switched. Transmission component 1004 can send an instruction to the UE for switching to the new beam. Determining component 1008 can determine, at least in part, based on a measurement report, that a cell handover should be initiated. Determining component 1008 can determine, at least in part, that a new cell should be the serving cell for the UE based on a measurement report. Transmission component 1004 can send an instruction to the UE for performing a handover to the new cell.

[0175] Figure 10 The number and arrangement of components shown are provided as examples. In practice, additional components, fewer components, different components, or components may exist. Figure 10 The components shown are arranged differently. Furthermore, Figure 10 The two or more components shown can be implemented within a single component, or Figure 10 The single component shown can be implemented as multiple distributed components. Alternatively, Figure 10 The set (one or more) components shown can perform actions described by Figure 10 The other set of components shown performs one or more functions.

[0176] The following provides an overview of various aspects of this disclosure:

[0177] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: measuring a signal transmitted by a base station using a set of candidate beams; communicating with the base station using a first beam from the set of candidate beams, at least in part based on the measurement of the signal; determining to switch the first beam; measuring a second beam from the set of candidate beams, at least in part based on the determination to switch the first beam; and switching the first beam to the second beam if beam parameters associated with the measurement of the second beam satisfy a condition.

[0178] Aspect 2: The method according to aspect 1 further includes: measuring the first beam according to periodic scheduling.

[0179] Aspect 3: The method according to any one of Aspects 1 to 2 further includes: determining, at least in part, the value of the beam parameter of each candidate beam included in the candidate beam set based on measurements of the signal using the candidate beam set; and selecting a first beam from the candidate beam set based at least in part on the value of the beam parameter of each candidate beam included in the candidate beam set.

[0180] Aspect 4: The method according to any one of Aspects 1 to 3, wherein determining to switch the first beam includes: determining that the conditions for switching the first beam to the second beam are met.

[0181] Aspect 5: The method of claim 4, wherein switching the first beam to the second beam when beam parameters associated with the measurement of the second beam satisfy a condition comprises: determining, at least in part, based on the measurement of the second beam, that the condition is still satisfied; and switching the first beam to the second beam, at least in part, based on the determination that the condition is still satisfied.

[0182] Aspect 6: The method according to aspect 4 further includes: determining, at least in part, based on measurements of the second beam, that the condition is no longer satisfied; and avoiding switching the first beam to the second beam, at least in part based on the determination that the condition is no longer satisfied.

[0183] Aspect 7: The method according to any one of Aspects 4 to 6, wherein determining that the condition for switching the first beam to the second beam is satisfied includes: identifying the stored values ​​of the beam parameters of the second beam; and determining that the condition is satisfied based at least in part on a comparison of the stored values ​​of the beam parameters of the second beam with the values ​​of the beam parameters of the first beam.

[0184] Aspect 8: The method according to any one of Aspects 1 to 7 further includes: sending a measurement report, the measurement report being based at least in part on the values ​​of beam parameters of one or more serving beams associated with the UE, wherein the first beam is included in the one or more serving beams.

[0185] Aspect 9: The method according to aspect 8 further includes: sorting the one or more service beams at least in part based on the values ​​of the beam parameters of the one or more service beams; and selecting a set of service beams to be included in a measurement report at least in part based on the sorting of the one or more service beams, wherein sending the measurement report includes: sending a measurement report indicating the values ​​of the beam parameters of the set of service beams.

[0186] Aspect 10: The method described in aspect 9, wherein the measurement report is a layer 1 beam measurement report.

[0187] Aspect 11: The method according to aspect 8 further includes: sorting the one or more serving beams at least in part based on the values ​​of the beam parameters of the one or more serving beams; selecting a set of serving beams associated with a cell at least in part based on the sorting of the one or more serving beams; and determining an average value of the beam parameters of the cell at least in part based on the values ​​of the beam parameters of the set of serving beams associated with the cell, wherein sending a measurement report includes: sending a measurement report indicating the average value of the beam parameters of the cell.

[0188] Aspect 12: The method described in aspect 11, wherein the measurement report is a layer 3 cell measurement report.

[0189] Aspect 13: The method according to any one of aspects 1 to 12 further includes: receiving from a base station, at least in part, an instruction to switch the serving transmit beam associated with the base station to a different transmit beam based on transmitting a measurement report; and switching the serving transmit beam associated with the base station to the different transmit beam for the base station.

[0190] Aspect 14: The method according to any one of aspects 1 to 13 further includes: receiving from the base station at least in part based on sending a measurement report a handover command instructing the UE to hand over its serving cell to a different cell; and performing a handover from the serving cell to the different cell at least in part based on receiving the handover command.

[0191] Aspect 15: The method according to any one of Aspects 1 to 14, wherein the beam parameter is a reference signal received power parameter.

[0192] Aspect 16: The method described according to any one of Aspects 1 to 15, wherein the beam parameter is a signal-to-noise ratio parameter.

[0193] Aspect 17: The method according to any one of Aspects 1 to 16, wherein the beam parameter is the maximum transmit power parameter.

[0194] Aspect 18: A method of wireless communication performed by a user equipment (UE), comprising: measuring a signal transmitted by a base station using a set of candidate beams; communicating with the base station using a first beam from the set of candidate beams, at least in part based on the measurement of the signal; determining to switch the first beam, at least in part based on a condition that a first value of a beam parameter associated with a second beam from the set of candidate beams satisfies; measuring a second beam, at least in part based on the determination to switch the first beam, to obtain a second value of the beam parameter; and switching the first beam to the second beam if the second value of the beam parameter satisfies the condition.

[0195] Aspect 19: The method according to aspect 18 further includes: measuring the first beam according to periodic scheduling.

[0196] Aspect 20: The method according to any one of aspects 18-19 further comprises: determining, at least in part, a value of a beam parameter of each candidate beam included in the candidate beam set based on measurements of the signal using the candidate beam set; and selecting a first beam from the candidate beam set based at least in part on the value of the beam parameter of each candidate beam included in the candidate beam set.

[0197] Aspect 21: The method according to any one of aspects 18-20, wherein determining the switching of the first beam comprises: determining, at least in part, based on a first value and a value of a beam parameter associated with the first beam, that a condition for switching the first beam to the second beam is satisfied, wherein the first value and the value are obtained at least in part based on measurements of the signal.

[0198] Aspect 22: According to the method of aspect 21, switching the first beam to the second beam when the second value of the beam satisfies the condition comprises: determining, at least in part, based on a measurement of the second beam, that the condition is still satisfied; and switching the first beam to the second beam, at least in part based on the determination that the condition is still satisfied.

[0199] Aspect 23: The method according to aspect 21 further includes: determining, at least in part, that the condition is not satisfied based on a second value; and avoiding switching the first beam to the second beam based at least in part on determining that the condition is no longer satisfied.

[0200] Aspect 24: The method according to any one of aspects 21-23, wherein the first value is a stored value of the beam parameters of the second beam, and wherein determining that the condition for switching the first beam to the second beam is satisfied includes: determining the condition satisfaction based at least in part on a comparison of the stored value of the beam parameters of the second beam with the value of the beam parameters of the first beam.

[0201] Aspect 25: The method according to any one of aspects 18-24 further includes: sending a measurement report, the measurement report being based at least in part on the values ​​of beam parameters of one or more serving beams associated with the UE, wherein the first beam is included in the one or more serving beams.

[0202] Aspect 26: According to the method of aspect 25, wherein the first beam is used to transmit a measurement report.

[0203] Aspect 27: The method according to any one of aspects 25-26 further includes: sorting the one or more serving beams at least in part based on the values ​​of beam parameters of the one or more serving beams; and selecting a set of serving beams to be included in a measurement report at least in part based on the sorting of the one or more serving beams, wherein sending the measurement report includes: sending a measurement report indicating the values ​​of beam parameters of the set of serving beams.

[0204] Aspect 28: The method described in aspect 27, wherein the measurement report is a layer 1 beam measurement report.

[0205] Aspect 29: The method according to any one of aspects 25-28 further includes: sorting the one or more serving beams at least in part based on the values ​​of the beam parameters of the one or more serving beams; selecting a set of serving beams associated with a cell at least in part based on the sorting of the one or more serving beams; and determining an average value of the beam parameters of the cell at least in part based on the values ​​of the beam parameters of the set of serving beams associated with the cell, wherein sending a measurement report includes: sending a measurement report indicating the average value of the beam parameters of the cell.

[0206] Aspect 30: The method described in aspect 29, wherein the measurement report is a layer 3 cell measurement report.

[0207] Aspect 31: The method according to any one of aspects 18-30 further includes: receiving from a base station, at least in part, an instruction to switch the serving transmit beam associated with the base station to a different transmit beam based on transmitting a measurement report; and switching the serving transmit beam associated with the base station to the different transmit beam for the base station.

[0208] Aspect 32: The method according to any one of aspects 18-31 further includes: receiving from the base station at least in part based on sending a measurement report a handover command instructing the UE to hand over its serving cell to a different cell; and performing a handover from the serving cell to the different cell at least in part based on receiving the handover command.

[0209] Aspect 33: The method described according to any one of aspects 18-32, wherein the beam parameter is a reference signal received power parameter.

[0210] Aspect 34: The method described in any of aspects 18-32, wherein the beam parameter is a signal-to-noise ratio parameter.

[0211] Aspect 35: The method described in any of aspects 18-32, wherein the beam parameter is the maximum transmit power parameter.

[0212] Aspect 36: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the methods of one or more of aspects 1-17 and 18-35.

[0213] Aspect 37: An apparatus for wireless communication, comprising: a memory, and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform the methods of one or more aspects of aspects 1-17 and 18-35.

[0214] Aspect 38: An apparatus for wireless communication, comprising at least one unit for performing the methods of one or more of aspects 1-17 and 18-35.

[0215] Aspect 39: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform methods of one or more of aspects 1-17 and 18-35.

[0216] Aspect 40: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions which, when executed by one or more processors of a device, cause the device to perform the methods of one or more aspects of aspects 1-17 and 18-35.

[0217] The foregoing disclosure provides explanations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise form disclosed. Modifications and variations can be made based on the foregoing disclosure, or can be obtained through practice in various aspects.

[0218] As used herein, the term "component" is intended to be interpreted broadly as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented using hardware, firmware, and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented using various forms of hardware, firmware, and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limiting in any way. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to any specific software code—it should be understood that software and hardware can be designed to implement the systems and / or methods, at least in part, based on the descriptions herein.

[0219] As used in this article, depending on the context, satisfying the threshold can mean a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0220] While specific combinations of features are recited in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of aspects. In fact, many of these features can be combined in ways not specifically recited in the claims and / or disclosed in the specification. Although each appended dependent claim may be directly subordinate to only one claim, disclosure of aspects includes each dependent claim being combined with each other claim in the group of claims. As used herein, the phrase “at least one of” in the list of items refers to any combination of these items, including a single member. For example, “at least one of a, b, or c” is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination of multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0221] No element, action, or instruction used herein should be construed as essential or necessary unless explicitly stated otherwise. Additionally, as used herein, the articles “a” and “one” are intended to include one or more items and may be used interchangeably with “one or more.” Furthermore, as used herein, the article “the” is intended to include one or more items referenced by the combined article “the” and may be used interchangeably with “the one or more.” Furthermore, as used herein, the terms “group” and “cluster” are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.) and may be used interchangeably with “one or more.” The term “only one” or similar terms are used where only one item is intended. Additionally, as used herein, the terms “have,” “contain,” “include,” etc., are intended to be open-ended terms. Furthermore, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated. Additionally, as used herein, the term “or” when used in series is intended to be inclusive and may be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., if used in combination with “or” or “only one of them”).

Claims

1. A method for wireless communication performed by a user equipment (UE), comprising: The candidate beam set is used to measure the signal transmitted by the base station to obtain a first value of the beam parameter for each candidate beam included in the candidate beam set; The first beam from the candidate beam set is used to communicate with the base station based at least in part on measurements of the signal; The measurement of the first beam is based at least in part on communicating with the base station using the first beam to obtain a second value of the beam parameter associated with the first beam; The switching of the first beam is determined at least in part based on the second value of the beam parameter associated with the first beam not satisfying a threshold or the first value of the beam parameter associated with the second beam from the candidate beam set satisfying a condition. The measurement of the second beam is based at least in part on determining to switch the first beam to obtain a second value of the beam parameter associated with the second beam; as well as The first beam is switched to the second beam if the second value of the beam parameter associated with the second beam satisfies the condition.

2. The method according to claim 1, wherein, Measuring the first beam includes: The first beam is measured according to periodic scheduling.

3. The method according to claim 1, further comprising: The first beam is selected from the candidate beam set based at least in part on the first value of the beam parameter of each candidate beam included in the candidate beam set.

4. The method according to claim 1, wherein, Determining to switch the first beam includes: The condition for switching the first beam to the second beam is determined at least in part based on the first value of the beam parameter associated with the second beam and the second value of the beam parameter associated with the first beam.

5. The method according to claim 4, wherein, Switching the first beam to the second beam when the second value of the beam parameter associated with the second beam satisfies the condition includes: The condition is determined to still be satisfied, at least in part, based on measurements of the second beam; and The first beam is switched to the second beam, at least in part, based on the determination that the condition is still met.

6. The method according to claim 4, further comprising: The condition is determined not to be met based at least in part on the second value of the beam parameter associated with the second beam; as well as Switching from the first beam to the second beam is avoided at least in part based on the determination that the condition is no longer met.

7. The method according to claim 4, wherein, The first value of the beam parameter associated with the second beam is a stored value, and wherein the condition for determining to switch the first beam to the second beam is satisfied includes: The condition is determined to be satisfied based at least in part on a comparison between the stored values ​​of the beam parameters of the second beam and the second values ​​of the beam parameters of the first beam.

8. The method according to claim 1, further comprising: A measurement report is sent, the measurement report being at least in part based on the values ​​of beam parameters of one or more serving beams associated with the UE, wherein the first beam is included in the one or more serving beams.

9. The method according to claim 8, wherein, The first beam is used to transmit the measurement report.

10. The method of claim 8, further comprising: The one or more serving beams are sorted at least in part based on the values ​​of the beam parameters of the one or more serving beams; as well as The selection of the set of service beams to be included in the measurement report is based at least in part on the ordering of the one or more service beams. Sending the measurement report includes: Send the measurement report indicating the values ​​of the beam parameters of the service beam set.

11. The method of claim 8, further comprising: The one or more serving beams are sorted at least in part based on the values ​​of the beam parameters of the one or more serving beams; The set of serving beams associated with a cell is selected at least in part based on the ordering of the one or more serving beams; as well as The average beam parameters of the cell are determined at least in part based on the values ​​of the beam parameters of the serving beam set associated with the cell. Sending the measurement report includes: Send the measurement report indicating the average value of the beam parameters of the cell.

12. The method according to claim 1, further comprising: At least in part, the instruction to switch the serving transmit beam associated with the base station to a different transmit beam is received from the base station based on sending a measurement report; as well as For the base station, the service transmit beam associated with the base station is switched to the different transmit beam.

13. The method according to claim 1, further comprising: At least in part, the UE receives a handover command from the base station instructing the UE to switch its serving cell to a different cell based on sending a measurement report; as well as The handover from the serving cell to the different cell is performed at least in part based on receiving the handover command.

14. The method according to claim 1, wherein, The beam parameters are reference signal received power parameters, signal-to-noise ratio parameters, or maximum transmit power parameters.

15. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors coupled to the memory, the one or more processors being configured to cause the UE to: The candidate beam set is used to measure the signal transmitted by the base station to obtain a first value of the beam parameter for each candidate beam included in the candidate beam set; The first beam from the candidate beam set is used to communicate with the base station based at least in part on measurements of the signal; The measurement of the first beam is based at least in part on communicating with the base station using the first beam to obtain a second value of the beam parameter associated with the first beam; The switching of the first beam is determined at least in part based on the second value of the beam parameter associated with the first beam not satisfying a threshold or the first value of the beam parameter associated with the second beam from the candidate beam set satisfying a condition. The measurement of the second beam is based at least in part on determining to switch the first beam to obtain a second value of the beam parameter associated with the second beam; as well as The first beam is switched to the second beam if the second value of the beam parameter associated with the second beam satisfies the condition.

16. The UE according to claim 15, wherein, In order to measure the first beam, the one or more processors are configured to cause the UE to: The first beam is measured according to periodic scheduling.

17. The UE according to claim 15, wherein, The one or more processors are further configured to: The first beam is selected from the candidate beam set based at least in part on the first value of the beam parameter of each candidate beam included in the candidate beam set.

18. The UE according to claim 15, wherein, To determine the switching of the first beam, the one or more processors are configured to: The condition for switching the first beam to the second beam is determined at least in part based on the first value of the beam parameter associated with the second beam and the second value of the beam parameter associated with the first beam.

19. The UE according to claim 18, wherein, In order to switch the first beam to the second beam when the second value of the beam parameter associated with the second beam satisfies the condition, the one or more processors are configured to: The condition is determined to still be satisfied, at least in part, based on measurements of the second beam; as well as The first beam is switched to the second beam, at least in part, based on the determination that the condition is still met.

20. The UE according to claim 18, wherein, The one or more processors are further configured to: The condition is determined not to be met based at least in part on the second value of the beam parameter associated with the second beam; and Switching from the first beam to the second beam is avoided at least in part based on the determination that the condition is no longer met.

21. The UE according to claim 18, wherein, The first value of the beam parameter associated with the second beam is a stored value, and wherein, in order to determine that the condition for switching the first beam to the second beam is met, the one or more processors are configured to: The condition is determined to be satisfied based at least in part on a comparison between the stored values ​​of the beam parameters of the second beam and the second values ​​of the beam parameters of the first beam.

22. The UE according to claim 15, wherein, The one or more processors are further configured to cause the UE to: A measurement report is sent, the measurement report being at least in part based on the values ​​of beam parameters of one or more serving beams associated with the UE, wherein the first beam is included in the one or more serving beams.

23. The UE according to claim 22, wherein, The first beam is used to transmit the measurement report.

24. The UE according to claim 22, wherein, The one or more processors are further configured to: The one or more serving beams are ordered at least in part based on the values ​​of their beam parameters; and The selection of the set of service beams to be included in the measurement report is based at least in part on the ordering of the one or more service beams. In order to send the measurement report, the one or more processors are configured to cause the UE to: Send the measurement report indicating the values ​​of the beam parameters of the service beam set.

25. The UE according to claim 22, wherein, The one or more processors are further configured to: The one or more serving beams are sorted at least in part based on the values ​​of the beam parameters of the one or more serving beams; The set of serving beams associated with a cell is selected at least in part based on the ordering of the one or more serving beams; as well as The average beam parameters of the cell are determined at least in part based on the values ​​of the beam parameters of the serving beam set associated with the cell. In order to send the measurement report, the one or more processors are configured to cause the UE to: Send the measurement report indicating the average value of the beam parameters of the cell.

26. The UE according to claim 15, wherein, The one or more processors are further configured to cause the UE to: At least in part, the instruction to switch the serving transmit beam associated with the base station to a different transmit beam is received from the base station based on sending a measurement report; as well as For the base station, the service transmit beam associated with the base station is switched to the different transmit beam.

27. The UE according to claim 15, wherein, The one or more processors are further configured to cause the UE to: At least in part, the UE receives a handover command from the base station instructing the UE to switch its serving cell to a different cell based on sending a measurement report; as well as The handover from the serving cell to the different cell is performed at least in part based on receiving the handover command.

28. The UE according to claim 15, wherein, The beam parameters are reference signal received power parameters, signal-to-noise ratio parameters, or maximum transmit power parameters.

29. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to perform the following operations: The candidate beam set is used to measure the signal transmitted by the base station to obtain a first value of the beam parameter for each candidate beam included in the candidate beam set; The first beam from the candidate beam set is used to communicate with the base station based at least in part on measurements of the signal; The measurement of the first beam is based at least in part on communicating with the base station using the first beam to obtain a second value of the beam parameter associated with the first beam; The switching of the first beam is determined at least in part based on the second value of the beam parameter associated with the first beam not satisfying a threshold or the first value of the beam parameter associated with the second beam from the candidate beam set satisfying a condition. The measurement of the second beam is based at least in part on determining to switch the first beam to obtain a second value of the beam parameter associated with the second beam; as well as The first beam is switched to the second beam if the second value of the beam parameter associated with the second beam satisfies the condition.

30. An apparatus for wireless communication, comprising: A unit for measuring a signal transmitted by a base station using a set of candidate beams to obtain a first value of a beam parameter for each candidate beam included in the set of candidate beams; A unit for communicating with the base station using a first beam from the candidate beam set, based at least in part on measurements of the signal; A unit for measuring the first beam at least in part based on communicating with the base station using the first beam to obtain a second value of the beam parameter associated with the first beam; A unit for determining to switch the first beam based at least in part on the second value of the beam parameter associated with the first beam not satisfying a threshold or the first value of the beam parameter associated with the second beam from the candidate beam set satisfying a condition; A unit for measuring the second beam based at least in part on determining the switching of the first beam to obtain a second value of the beam parameter associated with the second beam; as well as A unit for switching the first beam to the second beam when the second value of the beam parameter associated with the second beam satisfies the condition.

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