Beam correlation across frequency bands

Abstract

Methods, systems, and devices for wireless communications that support beam correlation across frequency bands for beam selection in the event of a frequency switch are described. For example, a base station may determine a configuration that indicates a mapping between a set of angular coverage ranges and a set of beam identifiers (IDs) for a set of frequency ranges corresponding to the operating frequencies of user equipment (UE). In some examples, the UE may undergo a frequency switch and switch from a first operating frequency to a second operating frequency. Based on the mapping, the UE may select a beam ID and communicate with the base station over the second operating frequency using the beam associated with the selected beam ID.

Description

Technology Field

[0001] Cross-references

[0002] This application claims priority to U.S. Patent Application No. 17 / 367,214 by Raghavan et al., filed July 2, 2021, titled “BEAM CORRELATION ACROSS FREQUENCY BANDS”, and U.S. Provisional Patent Application No. 63 / 070,122 by Raghavan et al., filed August 25, 2020, titled “BEAM CORRELATION ACROSS FREQUENCY BANDS”, each of which is assigned to the assignee of this specification and is expressly incorporated herein by reference.

[0003] Field of invention

[0004] The following relates to wireless communications involving beam correlation across frequency bands. Background Technology

[0005] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, and broadcast. These systems may be able to support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include 4th generation (4G) systems, such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and 5th generation (5G) systems, which may be referred to as New Radio (NR) systems. These systems may employ technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple-access communication system may include one or more base stations or one or more network access nodes, each of which may otherwise be known as a user equipment (UE), and simultaneously supports communication for multiple communication devices.

[0006] Some wireless communication systems may employ beam management techniques. For example, a base station may transmit a sequence of beams associated with different directions to the UE. The UE may select the beam with the highest signal strength and report the beam identifier (ID) associated with the selected beam back to the base station. In some examples, the UE may be able to operate within the upper millimeter wave band (e.g., 52.6 GHz to 71 GHz) across an ultra-wide bandwidth range (e.g., 14 GHz to 57 GHz to 71 GHz) by utilizing a single radio frequency (RF) chain. A single RF chain may limit the UE to using a single set of beam weights controlled by a single set of amplitude or gain controls and phase shifters for communications with the base station, which may lead to inaccurate beam parameters or channel estimates across the ultra-wide bandwidth.

[0007] The described techniques relate to improved methods, systems, devices, or apparatus that support beam correlation across frequency bands. Generally, the described techniques provide a user equipment (UE) utilizing a physical mapping between beam IDs and beam angle coverage ranges to select a beam identifier (ID) at the event of a frequency switch. For example, the UE may transmit an indication of a set of operating frequencies to a base station. In response, the base station may determine a mapping indicating the association between beam IDs and angle coverage ranges for a set of frequency ranges that includes the indicated set of operating frequencies. The base station may transmit the mapping to the UE, and at the event of a frequency switch, the UE may select a beam ID for subsequent communication with the base station based on the mapping.

[0008] A method of wireless communication in a UE is described. The method may include receiving from a base station a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band; determining a frequency switch from a first operating frequency of the set of operating frequencies to a second operating frequency of the set of operating frequencies; and selecting a second beam ID of the set of beam IDs based on the frequency switch and the mapping, wherein the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on the mapping.

[0009] A device for wireless communication in a UE is described. The device may include a processor, a memory coupled to the processor, and instructions stored in the memory. Instructions are executable by the processor so as to cause the device to receive from a base station a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band, determine a frequency switch from a first operating frequency of the set of operating frequencies to a second operating frequency of the set of operating frequencies, and select a second beam ID of the set of beam IDs based on the frequency switch and mapping, wherein the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on the mapping.

[0010] Another device for wireless communication in a UE is described. The device receives from a base station a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band, determines a frequency switch from a first operating frequency of the set of operating frequencies to a second operating frequency of the set of operating frequencies, and selects a second beam ID of the set of beam IDs based on the frequency switch and mapping, wherein the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on the mapping.

[0011] A non-transient computer-readable medium for storing code for wireless communication in a UE is described. The code may include instructions executable by a processor to select a second beam ID, wherein the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on the frequency switch and mapping, wherein the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on the mapping, receiving from a base station a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band, and determining a frequency switch from a first operating frequency of the set of operating frequencies to a second operating frequency of the set of operating frequencies.

[0012] Some examples of the methods, apparatuses and non-transient computer-readable media described herein may further include operations, features, means, or instructions for identifying a set of beam weights for a second beam ID based on a configuration and a second operating frequency, said set of beam weights which may be indicated by the configuration, and for receiving a signal from a base station based on the second beam ID and the set of beam weights.

[0013] Some examples of the methods, apparatuses and non-transient computer-readable media described herein may further include operations, features, means, or instructions for performing a set of beam search measurements associated with a base station based on a second beam ID, and communicating with the base station using the second beam ID based on the set of beam search measurements.

[0014] Some examples of the methods, apparatuses and non-transient computer-readable media described herein may further include operations, features, means, or instructions for preemptively performing a beam failure procedure based on configuration and frequency switching, and a second beam ID may be selected based on the beam failure procedure.

[0015] Some examples of the methods, apparatuses, and non-transient computer-readable media described herein may further include operations, features, means, or instructions for determining that a set of operating frequencies may be supported by a UE, and for transmitting an indication of a set of operating frequencies to a base station.

[0016] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, receiving a configuration may further include operations, features, means, or instructions for receiving a representation of the configuration in a system information block (SIB), a master information block (MIB), a radio resource control message (RRC), a layer 1 signal, a layer 2 signal, a capability information message, or any combination thereof.

[0017] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, receiving a configuration may include operations, features, means, or instructions for receiving a configuration as part of a start or initial acquisition procedure for a UE.

[0018] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, each angular coverage range of the set of angular coverage ranges may be based at least partially on a global coordinate system, a local coordinate system, a configured coordinate system, or any combination thereof.

[0019] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, each angular coverage range of the set of angular coverage ranges may be relative to the boresight of the antenna array of a base station or the boresight of the antenna array of a UE.

[0020] Some examples of the methods, apparatuses, and non-transient computer-readable media described herein may include operations, features, means, or instructions for determining a set of logical mappings associated with a set of indices for a set of beam IDs and a set of physical mappings associated with a set of angular coverage ranges based on configuration, and a second beam ID may be selected based on the set of logical mappings and the set of physical mappings.

[0021] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, a set of logical mappings corresponds to a first subset of a set of operating frequencies, and a set of physical mappings corresponds to a second subset of a set of operating frequencies.

[0022] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, each of the sets of beam IDs corresponds to a synchronization signal block (SSB), a channel state information reference signal (CSI-RS), a sounding reference signal (SRS), or any combination thereof.

[0023] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, at least one frequency band corresponds to an adjacent or non-adjacent set of frequency bands in the millimeter wave frequency range.

[0024] A method of wireless communication at a base station is described. The method may include the step of transmitting to a UE a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band; the step of transmitting a first signal at a first operating frequency among the set of operating frequencies using a first beam ID among the set of beam IDs, wherein the first signal is transmitted within a first angle coverage range among the set of angle coverage ranges corresponding to the first operating frequency according to the configuration; and the step of transmitting a second signal at a second operating frequency among the set of operating frequencies using a second beam ID among the set of beam IDs, wherein the second signal is transmitted within a second angle coverage range among the set of angle coverage ranges corresponding to the second operating frequency according to the configuration.

[0025] A device for wireless communication at a base station is described. The device may include a processor, memory coupled to the processor, and instructions stored in the memory. Commands are executable by a processor to cause the device to transmit to the UE a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band, and to transmit a first signal at a first operating frequency of a set of operating frequencies using a first beam ID of the set of beam IDs, wherein the first signal is transmitted within a first angle coverage range of a set of angle coverage ranges corresponding to the first operating frequency according to the configuration, and to transmit a second signal at a second operating frequency of a set of operating frequencies using a second beam ID of the set of beam IDs, wherein the second signal is transmitted within a second angle coverage range of a set of angle coverage ranges corresponding to the second operating frequency according to the configuration.

[0026] Another device for wireless communication at a base station is described. The device may include means for transmitting a configuration to a UE that indicates a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band, and transmit a first signal at a first operating frequency of a set of operating frequencies using a first beam ID among the set of beam IDs, wherein the first signal is transmitted within a first angle coverage range of a set of angle coverage ranges corresponding to the first operating frequency according to the configuration, and transmit a second signal at a second operating frequency of a set of operating frequencies using a second beam ID among the set of beam IDs, wherein the second signal is transmitted within a second angle coverage range of a set of angle coverage ranges corresponding to the second operating frequency according to the configuration.

[0027] A non-transient computer-readable medium for storing codes for wireless communication at a base station is described. The code may include instructions executable by a processor to transmit a configuration that indicates a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band, and to transmit a first signal at a first operating frequency of a set of operating frequencies using a first beam ID among the set of beam IDs, wherein the first signal is transmitted within a first angle coverage range of a set of angle coverage ranges corresponding to the first operating frequency according to the configuration, and to transmit a second signal at a second operating frequency of a set of operating frequencies using a second beam ID among the set of beam IDs, wherein the second signal is transmitted within a second angle coverage range of a set of angle coverage ranges corresponding to the second operating frequency according to the configuration.

[0028] Some examples of the methods, apparatuses, and non-transient computer-readable media described herein may include operations, features, means, or instructions for determining a set of beam weights for each of a set of beam IDs and mapping the set of beam weights to a set of angular coverage ranges for a set of operating frequencies, and the configuration indicates the mapping of the set of beam weights to a set of angular coverage ranges for a set of operating frequencies.

[0029] Some examples of the methods, apparatuses, and non-transient computer-readable media described herein may further include operations, features, means, or commands for receiving an indication of a set of operating frequencies supported by a UE, and determining, based on the indication, a mapping between beam IDs and a set of angular coverage ranges for each beam ID of the set of beam IDs.

[0030] Some examples of the methods, apparatuses, and non-transient computer-readable media described herein may further include operations, features, means, or instructions for determining each angular coverage range of a set of angular coverage ranges based on a global coordinate system, a local coordinate system, a configured coordinate system, or any combination thereof.

[0031] Some examples of the methods, apparatuses, and non-transient computer-readable media described herein may further include operations, features, means, or instructions for determining each of the sets of angular coverage ranges relative to the boresight of the antenna array of a base station or relative to the boresight of the antenna array of a UE.

[0032] Some examples of the methods, apparatuses, and non-transient computer-readable media described herein may further include operations, features, means, or instructions for determining a set of angular coverage ranges for each beam ID of a set of beam IDs based on individual beam widths for each beam ID.

[0033] Some examples of the methods, apparatuses, and non-transient computer-readable media described herein may further include operations, features, means, or instructions for determining a set of logical mappings associated with a set of indices and a set of physical mappings associated with a set of angular coverage ranges, and configurations indicate a set of logical mappings and a set of physical mappings.

[0034] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, a set of logical mappings corresponds to a first subset of a set of operating frequencies, and a set of physical mappings corresponds to a second subset of a set of operating frequencies.

[0035] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, transmitting a configuration may further include operations, features, means, or commands for transmitting an indication of the configuration in a SIB, MIB, RRC message, layer 1 signal, layer 2 signal, capability information message, or any combination thereof.

[0036] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, transmitting a configuration may include operations, features, means, or instructions for transmitting a configuration as part of a start or initial acquisition procedure for a UE.

[0037] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, each of the sets of beam IDs corresponds to an SSB, CSI-RS, SRS, or any combination thereof.

[0038] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, at least one frequency band corresponds to an adjacent or non-adjacent set of frequency bands in the millimeter wave frequency range. Brief explanation of the drawing

[0039] FIGS. 1 to 3 illustrate examples of wireless communication systems that support beam correlation across frequency bands according to embodiments of the present disclosure. FIGS. 4a and 4b illustrate examples of antenna array gain graphs supporting beam correlation across frequency bands according to embodiments of the present disclosure. FIG. 5 illustrates an example of a process flow that supports beam correlation across frequency bands according to embodiments of the present disclosure. FIGS. 6 and 7 show block diagrams of devices supporting beam correlation across frequency bands according to embodiments of the present disclosure. FIG. 8 shows a block diagram of a communication manager that supports beam correlation across frequency bands according to embodiments of the present disclosure. FIG. 9 shows a diagram of a system including a device that supports beam correlation across frequency bands according to embodiments of the present disclosure. FIGS. 10 and FIGS. 11 show block diagrams of devices supporting beam correlation across frequency bands according to embodiments of the present disclosure. FIG. 12 shows a block diagram of a communication manager that supports beam correlation across frequency bands according to embodiments of the present disclosure. FIG. 13 shows a diagram of a system including a device that supports beam correlation across frequency bands according to embodiments of the present disclosure. FIGS. 14 through 19 show flowcharts illustrating methods for supporting beam correlation across frequency bands according to embodiments of the present disclosure. Specific details for implementing the invention

[0040] Some wireless communication systems may employ beam management techniques to support beamformed transmissions. In some examples, beam management techniques are performed by transmitting synchronization signal blocks (SSBs), channel state information reference signals (CSI-RS), or sounding reference signals (SRS) to user equipment (UE). For example, a base station may transmit a sequence of SSB beams from different directions to the UE, where each beam is associated with a beam identifier (ID). The UE may detect one or more of the SSB beams and select an SSB beam to use for communication with the base station based on the received signal strength associated with each of the SSB beams. Additionally, the UE may transmit a random access message to the base station using resources within a physical random access channel (PRACH) mapped to the selected SSB ID, and the base station may determine the SSB ID (e.g., the selected SSB beam) based on resources within the PRACH (e.g., time or frequency resources within the PRACH). The base station and UE may also utilize the selected beam to transmit or receive subsequent communications.

[0041] In some examples, the wireless communication system may support communication within the upper millimeter wave (mmW) band (e.g., frequency spans exceeding 52.6 gigahertz (GHz)) across an ultra-wide bandwidth range (e.g., 14 GHz coverage between 57 and 71 GHz). In some examples, the UE may utilize a single radio frequency (RF) chain across the ultra-wide bandwidth range. The single RF chain may include a single set of phase shifters that may constrain analog or RF beamforming with limited ability to tune beam weights for transmits / receives over the ultra-wide band. As such, the UE may select a beam ID and use the beam associated with that beam ID for all communications with the base station, even at the event of a frequency switch at the UE or the base station. However, operating in the ultra-wide bandwidth range (e.g., in the upper mmW band) may result in performance variations between different frequencies (e.g., array gain performance for the intended direction of the beam corresponding to the physical orientation of the channel clusters relative to the antenna array) (e.g., which may be referred to as beam squinting). For example, a beam used for SSB, CSI-RS, or SRS at one frequency may drift angularly or in beam space at another frequency. As a result, utilizing a single beam ID in the event of a frequency switch may not provide the strongest beam (e.g., the highest signal strength) for communications between the UE and the base station.

[0042] In some examples, wireless communication systems may support SSB mapping across different frequencies in ultra-wide bandwidth beamforming. For example, a base station may determine a mapping indicating SSB indices as a function of frequency and transmit that mapping to the UE. For example, the mapping may indicate that SSB5 at 71 GHz maps to SSB4 at 57 GHz. In the event of a frequency switch, the UE may utilize this mapping to select a new beam ID. For example, if the UE switches from operating on the 71 GHz frequency to the 57 GHz frequency, the UE may select SSB4 for subsequent communications with the base station. The UE may also transmit an indication of the selected SSB beam ID to the base station. However, when the number of SSB beams is high, the UE may receive mappings for each SSB ID for multiple SSB IDs at multiple frequencies, which may increase signaling overhead.

[0043] Some wireless communication systems may support methods for determining correlated beams across frequencies in ultra-wide bandwidth beamforming. For example, a base station may transmit a message to the UE indicating a mapping of beam IDs to angle range coverages for a set of frequency ranges that include the operating frequencies for the UE. For example, the mapping may include a first beam ID mapped to a first angle coverage range in 57–61 GHz and a second angle coverage range in 61–66 GHz, and a second beam ID mapped to a third angle coverage range in 57–61 GHz and a fourth angle coverage range in 61–66 GHz. In some examples, the UE may use this mapping to determine a new beam ID at the event of a frequency switch. For example, the UE may switch from utilizing a 57 GHz carrier frequency to utilizing a 64 GHz carrier frequency. The mapping may indicate that a second beam ID at 61–66 GHz may have similar angular range coverage (e.g., overlapping angular range coverage) to a first beam ID at 57–61 GHz, and thus the UE may select a second beam ID for use in subsequent communications. Similar angular coverage ranges may indicate similar antenna array gains. The base station may also determine a set of beam weights from the mapping. That is, the UE may utilize the mapping to select a beam ID at a frequency carrier switch event that may account for beam squinting without excessive overhead signaling.

[0044] In some examples, wireless communication systems may also support a mix of logical mapping (e.g., mapping of SSB indices) and physical mapping (e.g., beam ID versus angle mapping). For example, logical mapping may be used for a wider range of frequencies (e.g., 57 GHz - 71 GHz), and physical mapping may be used for a smaller or larger specific range of frequencies. That is, physical mapping may be used to refine logical mapping.

[0045] Aspects of the present disclosure are initially described in the context of wireless communication systems. Additional aspects are described in the context of antenna array gain graphs and process flows. Aspects of the present disclosure are further illustrated and described with reference to device diagrams, system diagrams, and flowcharts relating to beam correlation across frequency bands.

[0046] FIG. 1 illustrates an example of a wireless communication system (100) that supports beam correlation across frequency bands according to embodiments of the present disclosure. The wireless communication system (100) may include one or more base stations (105), one or more UEs (115), and a core network (130). In some examples, the wireless communication system (100) may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system (100) may support enhanced broadband communication, ultra-reliability (e.g., mission-critical) communication, low-latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0047] Base stations (105) may be scattered across a geographical area to form a wireless communication system (100) and may be devices having different forms or different capabilities. Base stations (105) and UEs (115) may communicate wirelessly through one or more communication links (125). Each base station (105) may provide a coverage area (110) in which UEs (115) and base station (105) may establish one or more communication links (125). The coverage area (110) may be an example of a geographical area in which base stations (105) and UEs (115) may support the communication of signals according to one or more wireless access technologies.

[0048] UEs (115) may be scattered throughout the coverage area (110) of the wireless communication system (100), and each UE (115) may be stationary, mobile, or both at different times. UEs (115) may be devices having different form factors or different capabilities. Some examples of UEs (115) are illustrated in FIG. 1. The UEs (115) described herein may be able to communicate with various types of devices, such as other UEs (115), base stations (105), or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment), as illustrated in FIG. 1.

[0049] Base stations (105) may communicate with the core network (130), with each other, or with both. For example, base stations (105) may interface with the core network (130) through one or more backhaul links (120) (e.g., through S1, N2, N3, or other interfaces). Base stations (105) may communicate with each other over the backhaul links (120) (e.g., through X2, Xn, or other interfaces) directly (e.g., directly between base stations (105)), indirectly (e.g., through the core network (130)), or both. In some cases, the backhaul links (120) may be one or more wireless links or may include them.

[0050] One or more of the base stations (105) described in this specification may include a base transceiver station, a wireless base station, an access point, a wireless transceiver, a node B, an e-node B (eNB), a next-generation node B or a gigabit node B (any of these may be referred to as a gNB), a home node B, a home e-node B, or other suitable terms, or may be referred to by those skilled in the art as such.

[0051] The UE (115) may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or some other suitable term, wherein “device” may also be referred to as a unit, station, terminal, or client, among other examples. The UE (115) may also include or be referred to as a personal electronic device such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, the UE (115) may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine type communication (MTC) device, among other embodiments, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.

[0052] The UEs (115) described in this specification may be able to communicate with various types of devices, such as network equipment and base stations (105) including macro eNBs or gNBs, small cell eNBs or GNBs, or relay base stations, as shown in FIG. 1, among other embodiments, as well as other UEs (115) that may sometimes operate as relays.

[0053] UEs (115) and base stations (105) may communicate wirelessly with each other over one or more communication links (125) on one or more carriers. The term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure to support the communication links (125). For example, a carrier used for a communication link (125) may include a portion of a radio frequency spectrum band (e.g., Bandwidth Part (BWP)) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry capture signaling (e.g., synchronization signals, system information), control signaling that coordinates the operation for the carrier, user data, or other signaling. The wireless communication system (100) may support communication with the UE (115) using carrier aggregation or multi-carrier operation. The UE (115) may be composed of multiple downlink component carriers and one or more uplink component carriers depending on the carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers.

[0054] In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers. The carrier may be associated with a frequency channel (e.g., an Advanced Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be positioned according to a channel raster for discovery by UEs (115). The carrier may operate in a standalone mode where initial acquisition and connection can be performed by the UE (115) through the carrier, or the carrier may operate in a non-standalone mode where the connection is anchored using a different carrier (e.g., the same or different radio access technology).

[0055] The communication links (125) shown in the wireless communication system (100) may include uplink transmissions from the UE (115) to the base station (105), or downlink transmissions from the base station (105) to the UE (115). Carriers may be configured to carry downlink or uplink communications (e.g., in FDD mode), or to carry downlink and uplink communications (e.g., in TDD mode).

[0056] A carrier may be associated with a specific bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or the wireless communication system (100). For example, the carrier bandwidth may be one of a number of predetermined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz)) for carriers of a specific wireless access technology. Devices of the wireless communication system (100) (e.g., base stations (105), UEs (115), or both) may have a hardware configuration that supports communications over a specific carrier bandwidth, or may be configurable to support communications over one of a set of carrier bandwidths. In some examples, the wireless communication system (100) may include base stations (105) or UEs (115) that support simultaneous communications over carriers associated with multiple carrier bandwidths. In some examples, each served UE (115) may be configured to operate through parts (e.g., subband, BWP) or all of the carrier bandwidth.

[0057] Signal waveforms transmitted over a carrier may consist of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM). In a system employing MCM techniques, a resource element may include one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, wherein the symbol period and subcarrier interval are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both). Thus, the more resource elements received by the UE (115) and the higher the order of the modulation scheme, the higher the data rate may be for the UE (115). Wireless communication resources may refer to a combination of wireless frequency spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may further increase the data rate or data integrity for communication with the UE (115).

[0058] One or more numerologies for the carrier may be supported, where the numerology is the subcarrier interval ( f It may include ) and cyclic prefixes. The carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, the UE (115) may be composed of multiple BWPs. In some examples, a single BWP for the carrier may be active at a given time, and communications to the UE (115) may be limited to one or more active BWPs.

[0059] Time intervals for base stations (105) or UEs (115) are, for example, It may also be expressed as multiples of a basic time unit that may refer to a sampling period of seconds, where, may also represent the maximum supported subcarrier spacing, and may also represent the maximum supported Discrete Fourier Transform (DFT) size. Time intervals of communication resources may be organized according to radio frames, each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0060] Each frame may contain multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into multiple slots. Alternatively, each frame may contain a variable number of slots, and the number of slots may depend on the subcarrier interval. Each slot may contain multiple symbol periods (e.g., depending on the length of the cyclic prefix pre-defended in each symbol period). In some wireless communication systems (100), a slot may be further divided into multiple mini-slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f It may include sampling periods. The duration of the symbol period may depend on the frequency band or subcarrier interval of the operation.

[0061] A subframe, slot, mini-slot, or symbol may be the minimum scheduling unit (e.g., in the time domain) of the wireless communication system (100) and may be referred to as a transmit time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol cycles in the TTI) may be variable. Additionally or alternatively, the minimum scheduling unit of the wireless communication system (100) may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs).

[0062] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier using, for example, one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control domain for a physical control channel (e.g., a control resource set (CORESET)) may be defined by a number of symbol periods and may extend across the system bandwidth or a subset of the carrier's system bandwidth. One or more control domains (e.g., CORESETs) may be configured for a set of UEs (115). For example, one or more of the UEs (115) may monitor or search for control domains for control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level for control channel candidates may refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with encoded information for a control information format having a given payload size. The search space sets may include common search space sets configured to transmit control information to multiple UEs (115) and UE-specific search space sets for transmitting control information to a specific UE (115).

[0063] In some examples, the base station (105) may be mobile and thus may provide communication coverage for a moving geographical coverage area (110). In some examples, different geographical coverage areas (110) associated with different technologies may overlap, but different geographical coverage areas (110) may be supported by the same base station (105). In other examples, overlapping geographical coverage areas (110) associated with different technologies may be supported by different base stations (105). The wireless communication system (100) may include a heterogeneous network in which base stations (105) of different types provide coverage for various geographical coverage areas (110) using the same or different wireless access technologies.

[0064] The wireless communication system (100) may be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, the wireless communication system (100) may be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UEs (115) may be designed to support ultra-reliable, low-latency, or critical functions (e.g., mission-critical functions). Ultra-reliable communication may include private communication or group communication, and may be supported by one or more mission-critical services such as mission-critical push-to-talk (MCPTT), mission-critical video (MCVideo), or mission-critical data (MCData). Support for mission-critical functions may include the prioritization of services, and mission-critical services may be used for public safety or general commercial applications. The terms 'ultra-reliability', 'low latency', 'mission critical', and 'ultra-reliability low latency' may be used interchangeably in this specification.

[0065] In some examples, the UE (115) may also be able to communicate directly with other UEs (115) over a D2D communication link (135) (e.g., using a peer-to-peer (P2P) or device-to-device (D2D) protocol). One or more UEs (115) utilizing D2D communication may be within the geographical coverage area (110) of the base station (105). Other UEs (115) in such a group may be outside the geographical coverage area (110) of the base station (105) or otherwise may not be able to receive transmissions from the base station (105). In some examples, groups of UEs (115) communicating via D2D communication may utilize a one-to-many (1:M) system, where each UE (115) transmits to all other UEs (115) in the group. In some examples, the base station (105) facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs (115) without the involvement of the base station (105).

[0066] The core network (130) may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network (130) may be an advanced packet core (EPC) or a 5G core (5GC), and may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME), an access and mobility management function unit (AMF)) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function unit (UPF)). The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UEs (115) served by base stations (105) associated with the core network (130). User IP packets may be transmitted through a user plane entity that may provide IP address allocation as well as other functions. The user plane entity may be connected to network operator IP services (150). Network operator IP services (150) may include access to the Internet, intranet(s), IP multimedia subsystem (IMS), or packet switching (PS) streaming services.

[0067] Some of the network devices, such as base stations (105), may include subcomponents, such as access network entities (140), which may be examples of access node controllers (ANCs). Each access network entity (140) may communicate with UEs (115) through one or more other access network transmitting entities (145), and those other access network transmitting entities may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs). Each access network transmitting entity (145) may include one or more antenna panels. In some configurations, various functions of each access network entity (140) or base station (105) may be distributed across various network devices (e.g., radio heads and ANCs) or integrated into a single network device (e.g., base station (105)).

[0068] A wireless communication system (100) may operate using one or more frequency bands in the range of, for example, 300 megahertz (MHz) to 300 gigahertz (GHz). Generally, the range from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range in length from approximately 1 decimeter to 1 meter. Although UHF waves may be blocked or redirected by buildings and environmental features, the waves may penetrate structures sufficiently to provide service to UEs (115) located indoors by macro cells. Transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using smaller frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0069] The wireless communication system (100) may also operate in the super-high frequency (SHF) region using frequency bands of 3 GHz to 30 GHz, also known as the centimeter band, or in the extreme high frequency (EHF) region of the spectrum (e.g., 30 GHz to 300 GHz), also known as the millimeter band. In some examples, the wireless communication system (100) may support millimeter wave (mmW) communications between UEs (115) and base stations (105), and the EHF antennas of individual devices may be smaller or more closely spaced than UHF antennas. In some examples, this may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be subject to much greater atmospheric attenuation and shorter range than that of SHF or UHF transmissions. The techniques disclosed herein may be employed across transmissions using one or more different frequency regions, and the designated use of bands across these frequency regions may vary by country or regulatory body.

[0070] A wireless communication system (100) may utilize both licensed and unlicensed radio frequency spectrum bands. For example, a wireless communication system (100) may employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band, such as the 5 GHz Industrial Scientific and Medical (ISM) band. When operating in unlicensed radio frequency spectrum bands, devices such as base stations (105) and UEs (115) may employ carrier sensing for collision detection and avoidance. In some examples, operations in unlicensed bands may be based on carrier aggregation configurations in cooperation with component carriers operating in a licensed band (e.g., LAA). Operations in the unlicensed spectrum may include, among other examples, downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions.

[0071] A base station (105) or UE (115) may be equipped with multiple antennas, and these multiple antennas may be used to employ techniques such as transmit diversity, receive diversity, multiple input multiple output (MIMO) communication, or beamforming. The antennas of the base station (105) or UE (115) may be located within one or more antenna arrays or antenna panels that may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be placed in an antenna assembly such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station (105) may be located at various geographical locations. The base station (105) may have an antenna array having multiple rows and columns of antenna ports that the base station (105) may use to support beamforming of communications with the UE (115). Likewise, the UE (115) may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted through the antenna ports.

[0072] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., base station (105), UE (115)) to shape or steer an antenna beam (e.g., transmit beam, receive beam) along a spatial path between a transmitting device and a receiving device. Beamforming may be achieved by combining signals communicated through antenna elements of an antenna array such that some signals propagating in specific orientations of the antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated through antenna elements may include the transmitting device or the receiving device applying amplitude offsets, phase offsets, or both to the signals being returned through the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a specific orientation (e.g., for the antenna array of the transmitting device or the receiving device, or for some other orientations).

[0073] A base station (105) or a UE (115) may use beam sweeping techniques as part of beamforming operations. For example, the base station (105) may perform beamforming operations for directional communication with the UE (115) using multiple antennas or antenna arrays (e.g., antenna panels). Some signals (e.g., synchronization signals, reference signals, beam select signals, or other control signals) may be transmitted multiple times in different directions by the base station (105). For example, the base station (105) may transmit signals according to different beamforming weight sets associated with different transmission directions. Transmissions in different beam directions may be used to identify the beam direction for subsequent transmission or reception by the base station (105) (e.g., by a transmitting device such as the base station (105), or by a receiving device such as the UE (115).

[0074] Some signals, such as data signals associated with a specific receiving device, may be transmitted by the base station (105) in a single beam direction (e.g., a direction associated with a receiving device such as the UE (115)). In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on signals transmitted in one or more beam directions. For example, the UE (115) may receive one or more of the signals transmitted by the base station (105) in different directions, and the UE (115) may report to the base station (105) an indication of the signal received with the best signal quality, or otherwise acceptable signal quality.

[0075] In some examples, transmissions by a device (e.g., by a base station (105) or a UE (115)) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from a base station (105) to a UE (115). The UE (115) may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a number of beams configured across the system bandwidth or one or more subbands. The base station (105) may transmit a reference signal (e.g., a cell-specific reference signal (CRS), CSI-RS), which may or may not be precoded. The UE (115) may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel type codebook, linear combination type codebook, port selection type codebook). These techniques are described with reference to signals transmitted in one or more directions by the base station (105), but the UE (115) may employ similar techniques to transmit signals multiple times in different directions (e.g., to identify the beam direction for subsequent transmission or reception by the UE (115)) or to transmit a signal in a single direction (e.g., to transmit data to a receiving device).

[0076] A receiving device (e.g., UE (115)) may attempt multiple receiving configurations (e.g., directional listening) when receiving various signals from a base station (105), such as synchronization signals, reference signals, beam select signals, or other control signals. For example, the receiving device may attempt multiple receiving directions by receiving through different antenna subarrays, by processing signals received along different antenna subarrays, by receiving according to different sets of receiving beamforming weights (e.g., different sets of directional listening weights) applied to signals received from multiple antenna elements of an antenna array, or by processing signals received according to different sets of receiving beamforming weights applied to signals received from multiple antenna elements of an antenna array, any of which may be referred to as "listening" according to different receiving configurations or receiving directions. In some examples, the receiving device may use a single receiving configuration to receive along a single beam direction (e.g., when receiving a data signal). A single receiving configuration may be aligned to a beam direction determined based on listening according to different receiving configuration directions (e.g., a beam direction determined based on listening according to multiple beam directions to have the highest signal strength, highest signal-to-noise ratio (SNR), or otherwise acceptable signal quality).

[0077] In some examples, the UE (115) may utilize a physical mapping between beam IDs and beam angle coverage ranges to select a beam ID at the event of a frequency switch. For example, the UE (115) may transmit a designation of a set of operating frequencies to the base station (105). In response, the base station (105) may determine a mapping indicating an association between beam IDs and angle coverage ranges for a set of frequency ranges that includes the designation of the set of operating frequencies. The base station (105) may transmit the mapping to the UE (115), and at the event of a frequency switch, the UE (115) may select a beam ID for subsequent communication with the base station (105) based on the mapping.

[0078] FIG. 2 illustrates an example of a wireless communication system (200) that supports beam correlation across frequency bands according to embodiments of the present disclosure. In some embodiments, the wireless communication system (200) may implement embodiments of the wireless communication system (100). For example, the wireless communication system (200) may include a base station (105-a) and a UE (115-a), which may be examples of a base station (105) and a UE (115), as described with reference to FIG. 1. In some embodiments, the UE (115-a) and the base station (105-a) may be located in a coverage area (110-a).

[0079] In some examples, the wireless communication system (200) may support beam management techniques. For example, the UE (115-a) may establish a connection with the base station (105-a). To communicate with the base station (105-a), the UE (115-a) may determine a directional beam and display the directional beam to the base station (105-a), so that the base station (105-a) may acquire knowledge of which directional beam transmits downlink transmissions to the UE (115-a). For example, the base station (105-a) may transmit a sequence of beams (205) (beam (205-a), beam (205-b), and beam (205-c)) in different directions to the UE (115-a) via an SSB. The UE (115-a) detects beams (205) and may select a beam (205) from a sequence of beams (205) for communication with the base station (105-a). In some examples, the UE (115-a) may select a beam (205) based on signal strength. That is, the UE (115-a) may select the beam (205) associated with the highest signal strength. The UE (115-a) may transmit an indication of the selected beam (205) to the base station (105-a) via physical channel resources (e.g., a physical random access channel (PRACH)). Each beam (205) may be associated with a beam ID, and the base station (105-a) may determine the selected beam (205) based on the location (e.g., frequency and time) of the physical channel resource mapped to the beam ID. The UE (115-a) and the base station (105-a) may also utilize the selected beam (205) for subsequent communications. The base station and the UE (115-a) may also utilize other types of reference signals to perform beam management techniques such as SRSs or CSI-RSs.

[0080] In some examples, the UE (115-a) and the base station (105-a) may operate within the upper mmW band (e.g., 52.6 gigahertz (GHz) or higher) and may utilize the ultra-wide bandwidth (e.g., 14 GHz from 57-71 GHz). Wavelengths in the upper mmW bands may be smaller than wavelengths in other frequencies (e.g., 28 GHz or 39 GHz), which may result in larger antenna arrays, as more antenna elements are packed into the same physical aperture in the upper mmW bands compared to other frequencies. Additionally, the ultra-wide bandwidth may be available across multiple geographys (e.g., 57-71) that may allow for increased performance and beamforming gains. In some examples, the UE (115-a) may utilize a single RF chain through the ultra-wide bandwidth in the upper mmW band. A single RF chain may employ a single set of phase shifters that may constrain analog or radio frequency beamforming. That is, the UE (115-a) may select and utilize a single beam ID for all communications with the base station (105-a), even in the event of a frequency switch. For example, the UE (115-a) may operate at a first frequency (e.g., 71 GHz) and utilize a first set of beam weights corresponding to beam (205) (e.g., SSB1) for communications with the base station (105-a). After some time, the UE (115-a) may switch to a second operating frequency (e.g., 57 GHz) and utilize the same first set of beam weights corresponding to beam (205) (e.g., SSB1) for communications with the base station (105-a). However, in some cases, the array gain of the analog / radio frequency codebook may vary depending on the frequency (e.g., beam squinting) in the direction of interest targeted by the beam (205).That is, a beam (205) used in any one of the SSB, CSI-RS, or SRS at one frequency may drift in angle or beam space at different frequencies. Using a set of beam weights associated with the same beam ID across different frequencies may cause the UE (115-a) and base station (105-a) to utilize the beam (205) with lower signal strength (or antenna array gain) at some carrier frequencies compared to different carrier frequencies, which may result in poor performance, and in some cases, failure in receiving or transmitting signals as coverage is considered over ultra-wideband.

[0081] In some examples, the wireless communication system (200) may support beam mapping across different frequencies. For example, the UE (115-a) may receive a mapping from the base station (105-a) that may include an association between operating frequencies and beam IDs (e.g., SSB ID, CSR-RS ID, or SRS ID). The mapping may, additionally or alternatively, indicate an offset between a first beam ID transmitted using a first operating frequency and a second beam ID transmitted using a second operating frequency. For example, the mapping may indicate that SSB0 at 71 GHz maps to SSB1 at 57 GHz. In some examples, the UE (115-a) may utilize this mapping in an event of a frequency switch. For example, when the operating frequency switches from 57 GHz to 71 GHz, the UE (115-a) may identify the beam associated with SSB1 as opposed to the beam associated with SSB0 for communication with the base station (105-a) to account for the effects of the frequency switching. The UE (115-a) may also report a mapping (e.g., selected beam ID) to the base station (105-a) (e.g., SSB1). However, these techniques may be inefficient in situations where there are a large number of beams (e.g., beam IDs) and a large number of frequencies of interest, because the UE (115-a) may map beam IDs as a function of frequency, and an increased number of beams and frequencies may increase signaling overhead. This is particularly true when antenna arrays become larger and the carrier frequency of interest becomes higher, leading to a large number of beams of interest to ensure coverage through the same physical area, where the narrower beamwidths of each beam lead to a large number of beams of interest. Additionally, in some situations, the UE (115-a) may map a beam ID at a first frequency to two or more different beam IDs at different frequencies.That is, in different situations, one mapped beam ID may be more advantageous compared to another mapped beam ID. For example, the UE (115-a) may decide that SSB5 at 71 GHz maps to SSB5 at 57 GHz as well as SSB4 at 57 GHz, because in different situations, SSB4 at 57 GHz may be more advantageous compared to SSB5 at 57 GHz, and vice versa. This is the case when there is an SSB beam with a wider physical angle coverage than a narrower beamwidth beam. Mapping and reporting multiple beam IDs for each beam ID may increase signaling overhead with respect to feedback.

[0082] In some examples, the wireless communication system (200) may support the determination of beams correlated across frequencies. For example, the UE (115-a) may determine a set of operating frequencies supported by the UE (115-a) and transmit a representation of the set of operating frequencies to the base station (105-a). In response, the base station (105-a) may determine a mapping (e.g., mapping (210)) between the set of beams (e.g., beam IDs) and the angular coverage ranges associated with each beam ID at the different operating frequencies represented by the UE (115-a). Furthermore, the base station (105-a) may also determine a set of beam weights associated with each beam ID. In some examples, the base station (105-a) may determine the angular coverage ranges using offline beam characterization. As part of the initiation or initial acquisition procedure, the UE (115-a) may receive a mapping (210) from the base station (105-a) via a System Information Block (SIB), a Master Information Block (MIB), Radio Resource Control (RRC) signaling, Layer 1 signaling, Layer 2 signaling, capability information messages, etc. As described above, the mapping (210) may include an association between beam IDs and angle coverage ranges for a set of operating frequencies. For example, the mapping (210) may indicate that a first beam ID may support a first angle coverage range at a first operating frequency and a second angle coverage range at a second operating frequency. Additionally, the mapping (210) may indicate that a second beam ID may support a third angle coverage range at a first operating frequency and a fourth angle coverage range at a second operating frequency.

[0083] The mapping (210) may additionally or alternatively represent a set of beam weights associated with each beam ID. In some examples, the UE (115-a) may initially operate at a first frequency and select a first beam ID for communication with the base station (105-a). At the event of a frequency switch, the UE (115-a) may utilize the mapping (210) to select a beam ID for subsequent communication with the base station (105-a). For example, the UE (115-a) may switch to a second frequency and select a second beam ID based on the mapping (210). The UE (115-a) may select a second beam ID, because the angular range coverage associated with the second beam ID (indicated in the mapping (210)) at the second frequency (e.g., the fourth angular coverage) may indicate that the beam associated with the second beam ID may have antenna array gain or orientation similar to the first beam at the first frequency. In some examples, the UE (115-a) may identify beam weights associated with the second beam ID based on the mapping (210). Additionally, the UE (115-a) may perform beam search or beam refinement measurements based on the second beam ID. That is, the UE (115-a) may maintain a similar directional beam at the event of a frequency switch without excessive signaling overhead.

[0084] In some examples, the UE (115-a) and the base station (105-a) may use a combination of physical mapping (e.g., the relationship between a beam ID and an angular coverage range) and logical mapping (e.g., mapping beam IDs as a function of frequency). For example, for nearby bore-sight angles (e.g., angles near the vertical plane or line of an antenna array), the UE (115-a) may utilize logical mapping, and for end-fire angles or when the UE (115-a) is located at the edge of coverage 110-a, the UE may utilize physical mapping. Additionally, the UE (115-a) may utilize physical mapping to select wide beams (e.g., selecting narrow beams associated with a wide beam) and utilize logical mapping to refine the selected wide beam.

[0085] FIG. 3 illustrates an example of a wireless communication system (300) that supports beam correlation across frequency bands according to embodiments of the present disclosure. In some embodiments, the wireless communication system (300) may implement embodiments of the wireless communication system (100) and the wireless communication system (200). For example, the wireless communication system (200) may include a base station (105-b) and a UE (115-b), which may be examples of a base station (105) and a UE (115), as described with reference to FIG. 1 and FIG. 2. In some embodiments, the UE (115-b) and the base station (105-b) may be located in a coverage area (110-b).

[0086] In some examples, the wireless communication system (300) may support an upper mmW band (e.g., 52.6 GHz to 71 GHz) and may utilize an ultra-wide bandwidth (e.g., 14 GHz). That is, the base station (105) and the UE (115) may be able to operate on multiple channels (305) through the ultra-wide bandwidth in the upper mmW band. In some examples, the UE (115-b) may hop between channels (305) across an ultra-wide bandwidth (e.g., 57 GHz to 71 GHz). For example, the UE (115-b) may operate according to frequencies within channels (305-a, 305-b, 305-c, 305-d, 305-e, and 305-g) where each channel (305) spans 2 GHz.

[0087] In some examples, the UE (115-b) may establish a connection with the base station (105-b) and operate according to a first frequency. For example, the UE (115-b) may operate according to a frequency associated with channel (305-a) (e.g., 57 GHz). In some examples, the UE (115-b) may determine a directional beam to be utilized for communication with the base station (105-b). In these examples, the base station (105-b) may transmit a sequence of beams (310) in different directions according to the first frequency to the UE (115-b), and the UE (115-b) may select a beam from a sequence of beams that maximizes signal strength (e.g., RSRP). For example, the base station (105-b) may transmit beams (310-a), (310-b), (310-c), and (310-d). The beams (310) may be examples of SSB beams, CSI-RS beams, or SRS beams, and each beam may have an associated beam ID. For example, beams (310-a), (310-b), (310-c), and (310-d) may be associated with SSB0, SSB1, SSB2, and SSB3, respectively. In some examples, the UE (115-b) may determine that beam (310-c) and the associated beam ID SSB2 allow the highest signal strength and transmit an indication of the beam ID to the base station (105-b).

[0088] In some examples, the UE (115-b) may undergo frequency switching. In these cases, the UE (115-b) may determine a beam ID at the event of frequency switching by utilizing a mapping determined by the base station (105-b) or otherwise configured in the UE (115-b). For example, the UE (115-b) may indicate to the base station (105-b) a set of operating frequencies within a frequency band in the upper mmW band (e.g., 57 GHz, 64 GHz, or 71 GHz). Additionally, the UE (115-b) may also indicate operating frequencies within one or more other frequency bands within the upper mmW band (e.g., adjacent or non-adjacent frequency bands). In response, the base station (105-b) may determine a mapping between a set of angle coverages and a set of beam IDs for a set of frequency ranges that includes the set of operating frequencies indicated by the UE (115-b). In some examples, the set of frequency ranges may be configured at the UE (115-b) or the base station (105-b). Additionally, the angular coverage ranges may be relative to the boresight of the antenna array at the base station (105-b) or the UE (115-b). Examples of mapping may be seen in Table 1 below.

[0089]

[0090] In Table 1, the base station (105-b) may determine the associated angular coverage range for each SSB beam ID corresponding to SSB0, SSB1, SSB2, and SSB3 and three frequency ranges (e.g., 57-61 GHz, 61-66 GHz, and 66-71 GHz), where the three frequency ranges include the operating frequencies indicated by the UE (115-b). In some examples, the base station (105-b) may indicate a mapping for the UE (115-b). The entire mapping (e.g., Table 1) may be indicated on the UE (115-b). Alternatively, a portion of the mapping (e.g., a portion of Table 1) may be indicated on the UE (115-b). In some examples, the mapping may be dynamically signaled via control signaling. That is, different parts of the mapping may be transmitted to the UE (115-b) at different times, or the mapping may be updated over time as conditions (e.g., channel conditions) change.

[0091] In some examples, the UE (115-b) may switch from a first operating frequency to a second operating frequency. For example, the UE (115-b) may switch from operating at 57 GHz to operating at 64 GHz. That is, the UE (115-b) may hop from channel (305-a) to channel (305-d). If the frequency switch occurs at the base station (105-b), the base station (105-b) may transmit an indication of the frequency switch to the UE (115-b). In some examples, the UE (115-b) may utilize a mapping (e.g., Table 1) received from the base station (105-b) to select a second beam for communication with the base station (105-b) at the second operating frequency (e.g., 64 GHz). As described above, the UE (115-b) may utilize a first beam ID (e.g., SSB2 or beam (310-c)) at a first operating frequency (e.g., 57 GHz). In some examples, the UE (115-b) may select a second beam ID from the mapping based on the angle range associated with the first beam ID at the first operating frequency. For example, the UE (115-b) may select a beam ID associated with an angle coverage range at a second operating frequency that at least partially overlaps with the angle coverage range associated with the first beam ID at the first operating frequency. For example, SSB2 at a frequency range of 57-61 GHz can cover a range of -20° to 0°, thereby allowing the UE (115-b) to select SSB2 at 64 GHz or SSB3 at 64 GHz.As described with reference to FIG. 2, depending on the situation (e.g., depending on the angle at which the dominant cluster in the channel is seen through SSB2 at 57 GHz), SSB2 at 64 GHz or SSB3 at 64 GHz may be more advantageous (e.g., providing array gain similar to SSB2 at 57 GHz). That is, the UE (115-b) may utilize beam (310-d) or beam (310-c) at 64 GHz for communication with the base station (105-b). The base station (105-b) may also determine the beam based on the mapping for transmitting the downlink signal to the UE (115-b).

[0092] FIGS. 4a and 4b illustrate examples of antenna array gain plots (401 and 402) supporting beam correlation across frequency bands according to embodiments of the present disclosure. In some embodiments, the antenna array gain plots (401 and 402) may implement embodiments of wireless communication systems (100, 200, or 300). As described with reference to FIGS. 2 and 3, a base station may determine a mapping indicating the relationship between area coverage ranges and beam IDs for a set of frequency ranges including operating frequencies supported by the UE, and transmit the mapping to the UE. The UE may use the mapping at the event of a frequency switch to select a directional beam for subsequent communications with the base station.

[0093] FIG. 4a shows the array gain of different SSB beams associated with different SSB IDs as a function of frequency. In some examples, the UE may select a first beam to communicate with a base station at a first frequency (e.g., 71 GHz). For example, the UE may select an SSB beam (405-b) that may have an associated beam ID SSB5. In some examples, the UE may undergo a frequency switch, so that the UE switches from an operating frequency of 71 GHz to 57 GHz. In such examples, the UE (115) may select an SSB beam (405) that covers the UE's current angular range or a similar angular range (e.g., an overlapping frequency range) when compared with the SSB beam (405-b) using mapping. For example, the UE may select an SSB beam (405-a) or an SSB beam (405-c) at 57 GHz. As shown in FIG. 4a, the SSB beam (405-a) may deviate slightly from the array gain when compared to the SSB beam (405-b), whereas the SSB beam (405-c) may deviate significantly from the array gain when compared to 405-b. In this way, the UE may select the SSB beam (405-a) for subsequent communication with the base station at 57 GHz.

[0094] FIG. 4b shows the array gain of different CSI-RS beams associated with different CSI-RS IDs as a function of frequency. In some examples, the UE may select a first beam to communicate with a base station at a first frequency (e.g., 71 GHz). For example, the UE may select a CSI-RS beam (410-b) that may have an associated beam ID CSI-RS5. In some examples, the UE may undergo a frequency switch, so that the UE switches from an operating frequency of 71 GHz to 57 GHz. In such examples, the UE may select a CSI-RS beam (410) that covers the UE's current angular range or a similar angular range (e.g., an overlapping frequency range) when compared with the CSI-RS beam (410-b) using mapping. For example, the UE may select a CSI-RS beam (410-a) or a CSI-RS beam (410-c) at 57 GHz. As shown in FIG. 4b, the CSI-RS beam (410-a) may deviate slightly from the array gain when compared to the CSI-RS beam (410-b), whereas the CSI-RS beam (410-c) may deviate significantly from the array gain when compared to the CSI-RS beam (410-b). In this way, the UE may select the CSI-RS beam (410-a) for subsequent communication with the base station at 57 GHz.

[0095] In some examples, the UE and the base station may utilize a combination of logical mapping (e.g., beam IDs as a function of frequency) and physical mapping (e.g., the relationship between beam IDs and angular range coverages) for beam selection. For example, the UE may utilize logical mapping for wide beams (e.g., SSB beams (405)) and utilize physical mapping to refine wide beams (e.g., CSI-RS beams (410) or SSB beams (405)). That is, the UE may use logical mapping to select an SSB beam (405) and use physical mapping to select a narrow beam (e.g., CSI-RS beam (410) or SSB beam (405)) from a subset of narrow beams (e.g., CSI-RS beam (410)) corresponding to the selected SSB beam (e.g., frequency range of the SSB).

[0096] FIG. 5 illustrates an example of a process flow (500) that supports beam correlation across frequency bands according to embodiments of the present disclosure. In some embodiments, the process flow (500) may implement embodiments of a wireless communication system (200), a wireless communication system (300), a wireless communication system (300), an antenna array gain (401), and an antenna array gain (402). For example, the process flow (500) may include a base station (105-c) and a UE (115-c), which may be examples of a base station (105) and a UE (115) as described with reference to FIG. 1 through 4. In some embodiments, the UE (115-c) may select a directional beam based on a mapping that indicates an association between a set of angular range coverages for multiple operating frequencies and a set of beam IDs at the event of a frequency switch. The UE (115-c) and the base station (105-c) may implement one or more of the techniques described herein. The following alternative examples may be implemented, wherein the steps are performed in a different order than described or are not performed at all. In some cases, additional features not mentioned below or further may be added.

[0097] In 505, the base station (105-c) may determine a mapping. The mapping may include an association between a set of angular coverage ranges and a set of beam IDs for two or more frequency ranges, including the operating frequencies of the UE (115-c). The frequency ranges may be configured by the UE (115-c) or the base station (105-c). In some examples, the angular coverage ranges may be based on a global, local, or configured coordinate system and relative to the boresight of the antenna array of the base station (105-c) or the UE (115-c). Additionally, the base station (105-c) may determine a set of beam weights for each beam ID.

[0098] In 510, the base station (105-c) may transmit a mapping indication to the UE (115-c). In some examples, the base station (105-c) may transmit a mapping indication dynamically via control signaling. In some examples, the UE (115-c) may receive the mapping as part of a start or initial acquisition procedure. The mapping may be received as a SIB, MIB, RRC control message, Layer 1 signal, Layer 2 signal, capability message, or any combination thereof.

[0099] In 515, the base station (105-c) may transmit a first beam corresponding to a first beam ID at a first frequency to the UE (115-c). In some examples, the first frequency may be located in the upper mmW band. For example, the first frequency may be 57 GHz.

[0100] In 520, the UE (115-c) or the base station (105-c) may trigger a frequency switch. That is, the UE (115-c) and the base station (105-c) may switch from operating on a first frequency to a second frequency. For example, the UE (115-c) and the base station (105-c) may switch from 57 GHz to 64 GHz. When the frequency switch is triggered at the base station (105-c), the base station (105-c) may transmit an indication of the frequency switch to the UE (115-c).

[0101] In 525, the UE (115-c) may select a second beam ID based on mapping. In some examples, the UE (115-c) may select a second beam ID associated with an angle coverage range that overlaps at least partially or completely with the angle coverage range of the first beam ID at the first frequency. In some examples, two or more beam IDs may have angle coverage ranges that overlap when compared with the first beam ID. In these examples, the UE (115-c) may select one of two or more beams that provide similar array gain for the first beam ID at the first frequency. In some examples, the first beam ID and the second beam ID may be the same. In some examples, the base station (105-c) may also utilize mapping to select a beam ID. Additionally, the UE (115-c) may identify a set of beam weights associated with the second beam ID based on mapping.

[0102] In 530, the base station (105-c) may transmit a second beam corresponding to a second beam ID at a second frequency, and the UE (115-c) may receive the second beam.

[0103] FIG. 6 shows a block diagram (600) of a device (605) that supports beam correlation across frequency bands according to embodiments of the present disclosure. The device (605) may be an example of embodiments of the UE (115) as described herein. The device (605) may include a receiver (610), a communication manager (615), and a transmitter (620). The device (605) may also include a processor. Each of these components may communicate with one another (e.g., via one or more buses).

[0104] The receiver (610) may receive information such as packets associated with various information channels, user data, or control information (e.g., information related to control channels, data channels, and beam correlations across frequency bands). The information may be transmitted to other components of the device (605). The receiver (610) may be an example of the embodiments of the transceiver (920) described with reference to FIG. 9. The receiver (610) may utilize a single antenna or a set of antennas.

[0105] A communication manager (615) receives from a base station a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band, determines a frequency switch from a first operating frequency of the set of operating frequencies to a second operating frequency of the set of operating frequencies, and selects a second beam ID of the set of beam IDs based on the frequency switch and mapping, wherein the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on the mapping. The communication manager (615) may be an example of an embodiment of the communication manager (910) described herein.

[0106] As described in this specification, actions performed by the communication manager (615) may be implemented to realize one or more potential benefits. For example, utilizing physical mapping (e.g., mapping between angle range coverages and beam IDs) may allow the device (605) to reduce overhead signaling in terms of feedback. Physical mapping is available in the device (605) (e.g., UE). This may allow the base station to determine the beam ID based on the mapping instead of receiving an indication of the selected beam ID from the device (605). Thus, overhead signaling may be reduced.

[0107] Additionally, physical mapping may reduce processing in the device (605). For example, utilizing physical mapping or a portion of physical mapping may result in less processing compared to logical mapping. That is, identifying a beam ID based on a mapping between beam IDs and angle coverage ranges in a set of frequency ranges in the device (605) (e.g., physical mapping) may involve less processing than identifying a beam ID based on a mapping between a beam ID and multiple other beam IDs in different frequencies (e.g., logical mapping). These techniques may reduce the number of processing cycles performed by the device (605), which may reduce power consumption and increase battery life.

[0108] The communication manager (615) or its sub-components may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. When implemented in code executed by a processor, the functions of the communication manager (615) or its sub-components may be performed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in this disclosure.

[0109] The communication manager (615) or its sub-components may be physically located in various positions, including distributed so that parts of the functions are implemented at different physical locations by one or more physical devices. In some examples, the communication manager (615) or its sub-components may be separate and distinct components according to various aspects of the present disclosure. In some examples, the communication manager (615) or its sub-components may be combined with one or more other hardware components, including but not limited to input / output (I / O) components, transceivers, network servers, other computing devices, one or more other components described in the present disclosure, or combinations thereof according to various aspects of the present disclosure.

[0110] The transmitter (620) may transmit signals generated by other components of the device (605). In some examples, the transmitter (620) may be juxtaposed with the receiver (610) in a transceiver module. For example, the transmitter (620) may be an example of the embodiments of the transceiver (920) described with reference to FIG. 9. The transmitter (620) may use a single antenna or a set of antennas.

[0111] FIG. 7 shows a block diagram (700) of a device (705) that supports beam correlation across frequency bands according to embodiments of the present disclosure. The device (705) may be an example of embodiments of the device (605) or the UE (115) as described herein. The device (705) may include a receiver (710), a communication manager (715), and a transmitter (735). The device (705) may also include a processor. Each of these components may communicate with one another (e.g., via one or more buses).

[0112] The receiver (710) may receive information such as packets associated with various information channels, user data, or control information (e.g., information related to control channels, data channels, and beam correlations across frequency bands). The information may be transmitted to other components of the device (705). The receiver (710) may be an example of the embodiments of the transceiver (920) described with reference to FIG. 9. The receiver (710) may utilize a single antenna or a set of antennas.

[0113] The communication manager (715) may be an example of embodiments of the communication manager (615) as described in this specification. The communication manager (715) may include a configuration receiver (720), a frequency switch manager (725), and a beam selection component (730). The communication manager (715) may be an example of embodiments of the communication manager (910) described in this specification.

[0114] The configuration receiver (720) may receive a configuration from the base station that indicates a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, and each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band.

[0115] The frequency switch manager (725) may determine a frequency switch from a first operating frequency among a set of operating frequencies to a second operating frequency among a set of operating frequencies.

[0116] The beam selection component (730) may select a second beam ID from a set of beam IDs based on frequency switching and mapping, and the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on mapping.

[0117] The transmitter (735) may transmit signals generated by other components of the device (705). In some examples, the transmitter (735) may be juxtaposed with the receiver (710) in the transceiver module. For example, the transmitter (735) may be an example of the embodiments of the transceiver (920) described with reference to FIG. 9. The transmitter (735) may use a single antenna or a set of antennas.

[0118] FIG. 8 shows a block diagram (800) of a communication manager (805) that supports beam correlation across frequency bands according to embodiments of the present disclosure. The communication manager (805) may be an example of embodiments of the communication manager (615), the communication manager (715), or the communication manager (910) described herein. The communication manager (805) may include a configuration receiver (810), a frequency switch manager (815), a beam selection component (820), a beam weighting manager (825), a signal receiver (830), a beam search component (835), a communication component (840), a beam failure manager (845), a frequency component (850), a display transmitter (855), and a mapping component (860). Each of these modules may communicate directly or indirectly with one another (e.g., via one or more buses).

[0119] The configuration receiver (810) may receive a configuration from the base station indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, and each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band.

[0120] In some examples, the configuration receiver (810) may receive an indication of configuration in a SIB, MIB, RRC message, layer 1 signal, layer 2 signal, capability information message, or any combination thereof.

[0121] In some examples, the configuration receiver (810) may receive the configuration as part of the start or initial acquisition procedure for the UE.

[0122] In some examples, each angular coverage range of a set of angular coverage ranges is based on a global coordinate system, a local coordinate system, a configured coordinate system, or any combination thereof. In some cases, each angular coverage range of a set of angular coverage ranges is relative to the boresight of the base station's antenna array or the boresight of the UE's antenna array. In some cases, each of a set of beam IDs corresponds to an SSB, CSI-RS, SRS, or any combination thereof.

[0123] In some cases, at least one frequency band corresponds to an adjacent or non-adjacent set of frequency bands in the mmW frequency range.

[0124] The frequency switch manager (815) may determine a frequency switch from a first operating frequency among a set of operating frequencies to a second operating frequency among a set of operating frequencies.

[0125] The beam selection component (820) may select a second beam ID from a set of beam IDs based on frequency switching and mapping, and the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on mapping.

[0126] The beam weight manager (825) may identify a set of beam weights for a second beam ID based on the configuration and the second operating frequency, where the set of beam weights is indicated by the configuration.

[0127] The signal receiver (830) may receive a signal from the base station based on a set of second beam IDs and beam weights.

[0128] The beam search component (835) may perform a set of beam search measurements associated with the base station based on the second beam ID.

[0129] The communication component (840) may also communicate with the base station using a second beam ID based on a set of beam search measurements.

[0130] The beam failure manager (845) may preemptively perform a beam failure procedure based on the configuration and frequency switch, where the second beam ID is selected based on the beam failure procedure.

[0131] The frequency component (850) may determine that a set of operating frequencies is supported by the UE.

[0132] The indicator transmitter (855) may also transmit an indication of a set of operating frequencies to the base station.

[0133] The mapping component (860) may determine a set of logical mappings associated with a set of indices for a set of beam IDs and a set of physical mappings associated with a set of angle coverage ranges based on the configuration, and a second beam ID is selected based on the set of logical mappings and the set of physical mappings.

[0134] In some cases, a set of logical mappings corresponds to a first subset of a set of operating frequencies. In some cases, a set of physical mappings corresponds to a second subset of a set of operating frequencies.

[0135] FIG. 9 illustrates a diagram of a system (900) comprising a device (905) that supports beam correlation across frequency bands according to embodiments of the present disclosure. The device (905) may be an example of or include components of the device (605), device (705), or UE (115) as described herein. The device (905) may include components for bidirectional voice and data communications, including components for transmitting and receiving communications, such as a communication manager (910), an I / O controller (915), a transceiver (920), an antenna (925), a memory (930), and a processor (940). These components may communicate electronically through one or more buses (e.g., bus (945)).

[0136] A communication manager (910) receives from a base station a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band, and

[0137] A frequency switch is determined from a first operating frequency among a set of operating frequencies to a second operating frequency among a set of operating frequencies, and a second beam ID is selected among a set of beam IDs based on the frequency switch and mapping, wherein the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on the mapping.

[0138] The I / O controller (915) may manage input and output signals for the device (905). The I / O controller (915) may also manage peripherals that are not integrated into the device (905). In some cases, the I / O controller (915) may represent a physical connection or port to an external peripheral. In some cases, the I / O controller (915) may utilize an operating system such as iOS®, ANDROID®, MS-DOS®, MS-WINDOWS®, OS / 2®, UNIX®, LINUX®, or other known operating systems. In other cases, the I / O controller (915) may represent a modem, keyboard, mouse, touchscreen, or similar device and interact with them. In some cases, the I / O controller (915) may be implemented as part of a processor. In some cases, the user may interact with the device (905) through the I / O controller (915) or through hardware components controlled by the I / O controller (915).

[0139] As described above, the transceiver (920) may communicate bidirectionally through one or more antennas, wired or wireless links. For example, the transceiver (920) may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver (920) may also include a modem configured to modulate packets, provide the modulated packets to antennas for transmission, and demodulate packets received from the antennas.

[0140] In some cases, the wireless device may include a single antenna (925). However, in some cases, the device may have more than one antenna (925) capable of simultaneously transmitting or receiving multiple wireless transmissions.

[0141] Memory (930) may include RAM and ROM. Memory (930) may store computer-readable, computer-executable code (935) containing instructions, which, when executed, cause the processor to perform the various functions described herein. In some cases, memory (930) may include a Basic Input / Output System (BIOS) which, among others, may control basic hardware or software operations, such as interactions with peripheral components or devices.

[0142] The processor (940) may include intelligent hardware devices (e.g., general-purpose processor, DSP, CPU, microcontroller, ASIC, FPGA, programmable logic device, discrete gate or transistor logic component, discrete hardware component, or any combination thereof). In some cases, the processor (940) may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor (940). The processor (940) may be configured to execute computer-readable instructions stored in memory (e.g., memory (930)) to enable the device (905) to perform various functions (e.g., functions or tasks that support beam correlation across frequency bands).

[0143] Code (935) may include instructions for implementing aspects of the present disclosure, including instructions for supporting wireless communication. Code (935) may be stored in a non-transient computer-readable medium, such as system memory or other types of memory. In some cases, Code (935) may not be directly executable by the processor (940) (e.g., when compiled and executed), but may enable the computer to perform the functions described herein.

[0144] FIG. 10 shows a block diagram (1000) of a device (1005) that supports beam correlation across frequency bands according to embodiments of the present disclosure. The device (1005) may be an example of embodiments of a base station (105) as described herein. The device (1005) may include a receiver (1010), a communication manager (1015), and a transmitter (1020). The device (1005) may also include a processor. Each of these components may communicate with one another (e.g., via one or more buses).

[0145] The receiver (1010) may receive information such as packets associated with various information channels, user data, or control information (e.g., information related to control channels, data channels, and beam correlations across frequency bands). The information may be transmitted to other components of the device (1005). The receiver (1010) may be an example of the embodiments of the transceiver (1320) described with reference to FIG. 13. The receiver (1010) may utilize a single antenna or a set of antennas.

[0146] A communication manager (1015) may transmit to a UE a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band, and transmit a first signal at a first operating frequency of a set of operating frequencies using a first beam ID among the set of beam IDs, wherein the first signal is transmitted within a first angle coverage range of a set of angle coverage ranges corresponding to a first operating frequency according to the configuration, and transmit a second signal at a second operating frequency of a set of operating frequencies using a second beam ID among the set of beam IDs, wherein the second signal is transmitted within a second angle coverage range of a set of angle coverage ranges corresponding to a second operating frequency according to the configuration. The communication manager (1015) may be an example of the embodiments of the communication manager (1310) described in this specification.

[0147] The communication manager (1015) or its sub-components may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. When implemented in code executed by a processor, the functions of the communication manager (1015) or its sub-components may be performed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC), an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in this disclosure.

[0148] The communication manager (1015) or its sub-components may be physically located in various positions, including distributed so that parts of the functions are implemented at different physical locations by one or more physical devices. In some examples, the communication manager (1015) or its sub-components may be separate and distinct components according to various aspects of the disclosure. In some examples, the communication manager (1015) or its sub-components may be combined with one or more other hardware components, including but not limited to input / output (I / O) components, transceivers, network servers, other computing devices, one or more other components described in the disclosure, or combinations thereof according to various aspects of the disclosure.

[0149] The transmitter (1020) may transmit signals generated by other components of the device (1005). In some examples, the transmitter (1020) may be juxtaposed with the receiver (1010) in a transceiver module. For example, the transmitter (1020) may be an example of the embodiments of the transceiver (1320) described with reference to FIG. 13. The transmitter (1020) may use a single antenna or a set of antennas.

[0150] FIG. 11 shows a block diagram (1100) of a device (1105) that supports beam correlation across frequency bands according to embodiments of the present disclosure. The device (1105) may be an example of embodiments of the device (1005) or base station (105) as described herein. The device (1105) may include a receiver (1110), a communication manager (1115), and a transmitter (1135). The device (1105) may also include a processor. Each of these components may communicate with one another (e.g., via one or more buses).

[0151] The receiver (1110) may receive information such as packets associated with various information channels, user data, or control information (e.g., information related to control channels, data channels, and beam correlations across frequency bands). The information may be transmitted to other components of the device (1105). The receiver (1110) may be an example of an embodiment of the transceiver (1320) described with reference to FIG. 13. The receiver (1110) may utilize a single antenna or a set of antennas.

[0152] The communication manager (1115) may be an example of embodiments of the communication manager (1015) as described in this specification. The communication manager (1115) may include a configuration transmitter (1120), a first frequency component (1125), and a second frequency component (1130). The communication manager (1115) may be an example of embodiments of the communication manager (1310) described in this specification.

[0153] The configuration transmitter (1120) may transmit to the UE a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band.

[0154] The first frequency component (1125) may transmit a first signal at a first operating frequency among the operating frequencies using a first beam ID of a set of beam IDs, and the first signal is transmitted within a first angle coverage range among the angle coverage ranges corresponding to the first operating frequency according to the configuration.

[0155] The second frequency component (1130) may transmit a second signal at a second operating frequency among the operating frequencies using a second beam ID of a set of beam IDs, and the second signal is transmitted within a second angle coverage range among a set of angle coverage ranges corresponding to the second operating frequency according to the configuration.

[0156] The transmitter (1135) may transmit signals generated by other components of the device (1105). In some examples, the transmitter (1135) may be juxtaposed with the receiver (1110) in a transceiver module. For example, the transmitter (1135) may be an example of an embodiment of the transceiver (1320) described with reference to FIG. 13. The transmitter (1135) may use a single antenna or a set of antennas.

[0157] FIG. 12 shows a block diagram (1200) of a communication manager (1205) that supports beam correlation across frequency bands according to embodiments of the present disclosure. The communication manager (1205) may be an example of embodiments of the communication manager (1015), the communication manager (1115), or the communication manager (1310) described herein. The communication manager (1205) may include a configuration transmitter (1210), a first frequency component (1215), a second frequency component (1220), a beam weighting mapper (1225), a display receiver (1230), and a mapping manager (1235). Each of these modules may communicate directly or indirectly with one another (e.g., via one or more buses).

[0158] The configuration transmitter (1210) may transmit to the UE a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band.

[0159] In some examples, the configuration transmitter (1210) may transmit an indication of the configuration in a SIB, MIB, RRC message, layer 1 signal, layer 2 signal, capability information message, or any combination thereof.

[0160] In some examples, the configuration transmitter (1210) may transmit the configuration as part of a start or initial acquisition procedure for the UE.

[0161] In some cases, each of the sets of beam IDs corresponds to an SSB, CSI-RS, SRS, or any combination thereof.

[0162] In some cases, at least one frequency band corresponds to an adjacent or non-adjacent set of frequency bands in the mmW frequency range.

[0163] The first frequency component (1215) may transmit a first signal at a first operating frequency among the operating frequencies using a first beam ID of a set of beam IDs, and the first signal is transmitted within a first angle coverage range among the angle coverage ranges corresponding to the first operating frequency according to the configuration.

[0164] The second frequency component (1220) may transmit a second signal at a second operating frequency among the operating frequencies using a second beam ID of a set of beam IDs, and the second signal is transmitted within a second angle coverage range among a set of angle coverage ranges corresponding to the second operating frequency according to the configuration.

[0165] The beam weight mapper (1225) may determine a set of beam weights for each of the sets of beam IDs.

[0166] In some examples, the beam weight mapper (1225) may map a set of beam weights to a set of angular coverage ranges for a set of operating frequencies, where the configuration indicates the mapping of a set of beam weights to a set of angular coverage ranges for a set of operating frequencies.

[0167] The display receiver (1230) may receive a display of a set of operating frequencies supported by the UE.

[0168] The mapping manager (1235) may determine a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID of the set of beam IDs based on a representation. In some examples, the mapping manager (1235) may determine each angle coverage range of the set of angle coverage ranges based on a global coordinate system, a local coordinate system, a configured coordinate system, or any combination thereof.

[0169] In some examples, the mapping manager (1235) may determine each of the sets of angle coverage ranges relative to the boresight of the base station’s antenna array or relative to the boresight of the UE’s antenna array.

[0170] In some examples, the mapping manager (1235) may determine a set of angular coverage ranges for each beam ID of a set of beam IDs based on individual beam widths for each beam ID.

[0171] In some examples, the mapping manager (1235) may determine a set of logical mappings associated with a set of indices and a set of physical mappings associated with multiple angle coverage ranges, and the configuration indicates a set of logical mappings and a set of physical mappings.

[0172] In some cases, a set of logical mappings corresponds to a first subset of a set of operating frequencies. In some cases, a set of physical mappings corresponds to a second subset of a set of operating frequencies.

[0173] FIG. 13 illustrates a diagram of a system (1300) comprising a device (1305) that supports beam correlation across frequency bands according to embodiments of the present disclosure. The device (1305) may be an example of or include components of a device (1005), a device (1105), or a base station (105) as described herein. The device (1305) may include components for bidirectional voice and data communication, including a communication manager (1310), a network communication manager (1315), a transceiver (1320), an antenna (1325), a memory (1330), a processor (1340), and an inter-station communication manager (1345), for transmitting and receiving communications. These components may communicate electronically through one or more buses (e.g., a bus (1350)).

[0174] A communication manager (1310) may transmit to a UE a configuration indicating a mapping between a set of beam IDs and a set of angle coverage ranges for each beam ID, wherein each angle coverage range of the set of angle coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band, and transmit a first signal at a first operating frequency of a set of operating frequencies using a first beam ID among the set of beam IDs, wherein the first signal is transmitted within a first angle coverage range of a set of angle coverage ranges corresponding to a first operating frequency according to the configuration, and transmit a second signal at a second operating frequency of a set of operating frequencies using a second beam ID among the set of beam IDs, wherein the second signal is transmitted within a second angle coverage range of a set of angle coverage ranges corresponding to a second operating frequency according to the configuration.

[0175] The network communication manager (1315) may manage communications with the core network (e.g., through one or more wired backhaul links). For example, the network communication manager (1315) may manage the delivery of data communications to client devices such as one or more UEs (115).

[0176] As described above, the transceiver (1320) may communicate bidirectionally through one or more antennas, wired or wireless links. For example, the transceiver (1320) may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver (1320) may also include a modem configured to modulate packets, provide the modulated packets to antennas for transmission, and demodulate packets received from the antennas.

[0177] In some cases, the wireless device may include a single antenna (1325). However, in some cases, the device may have more than one antenna (1325) capable of simultaneously transmitting or receiving multiple wireless transmissions.

[0178] Memory (1330) may include RAM, ROM, or a combination thereof. Memory (1330) may store computer-readable code (1335) containing instructions that, when executed by a processor (e.g., processor (1340)), cause the device to perform the various functions described herein. In some cases, memory (1330) may include, among others, a BIOS that may control basic hardware or software operations, such as interactions with peripheral components or devices.

[0179] The processor (1340) may include intelligent hardware devices (e.g., general-purpose processor, DSP, CPU, microcontroller, ASIC, FPGA, programmable logic device, discrete gate or transistor logic component, discrete hardware component, or any combination thereof). In some cases, the processor (1340) may be configured to operate a memory array using a memory controller. In some cases, the memory controller may be integrated within the processor (1340). The processor (1340) may be configured to execute computer-readable instructions stored in memory (e.g., memory (1330)) to enable the device (1305) to perform various functions (e.g., functions or tasks that support beam correlation across frequency bands).

[0180] The inter-station communication manager (1345) may manage communication with other base stations (105) and may include a controller or scheduler to control communication with UEs (115) in cooperation with other base stations (105). For example, the inter-station communication manager (1345) may coordinate scheduling for transmissions to UEs (115) for various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-station communication manager (1345) may provide an X2 interface within LTE / LTE-A wireless communication network technology to provide communication between base stations (105).

[0181] Code (1335) may include instructions for implementing aspects of the present disclosure, including instructions for supporting wireless communication. Code (1335) may be stored in a non-transient computer-readable medium, such as system memory or other types of memory. In some cases, Code (1335) may not be directly executable by the processor (1340) (e.g., when compiled and executed), but may enable the computer to perform the functions described herein.

[0182] FIG. 14 illustrates a flowchart illustrating a method (1400) for supporting beam correlation across frequency bands according to embodiments of the present disclosure. Operations of the method (1400) may be implemented by a UE (115) or its components as described herein. For example, operations of the method (1400) may be performed by a communication manager as described with reference to FIGS. 6 through 9. In some examples, the UE may perform the functions described below by executing a set of commands to control functional elements of the UE. Additionally or alternatively, the UE may perform embodiments of the functions described below using special-purpose hardware.

[0183] In 1405, the UE may receive from a base station a configuration indicating a mapping between a set of beam IDs and a set of angular coverage ranges for each beam ID of the set of beam IDs, wherein each angular coverage range of the set of angular coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band. The operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be performed by a configuration receiver as described with reference to FIGS. 6 through 9.

[0184] In 1410, the UE may determine a frequency switch from a first operating frequency among a set of operating frequencies to a second operating frequency among a set of operating frequencies. The operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be performed by a frequency switch manager as described with reference to FIGS. 6 through 9.

[0185] In 1415, the UE may select a second beam ID from a set of beam IDs based on frequency switching and mapping, and the selected second beam ID corresponds to a second angular coverage range and a second operating frequency based on mapping. The operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be performed by a beam selection component as described with reference to FIGS. 6 through 9.

[0186] FIG. 15 illustrates a flowchart illustrating a method (1500) for supporting beam correlation across frequency bands according to embodiments of the present disclosure. Operations of the method (1500) may be implemented by a UE (115) or its components as described herein. For example, operations of the method (1500) may be performed by a communication manager as described with reference to FIGS. 6 through 9. In some examples, the UE may perform the functions described below by executing a set of commands to control functional elements of the UE. Additionally or alternatively, the UE may perform embodiments of the functions described below using special-purpose hardware.

[0187] In 1505, the UE may receive from a base station a configuration indicating a mapping between a set of beam IDs and a set of angular coverage ranges for each beam ID of the set of beam IDs, wherein each angular coverage range of the set of angular coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band. The operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be performed by a configuration receiver as described with reference to FIGS. 6 through 9.

[0188] In 1510, the UE may determine a frequency switch from a first operating frequency among a set of operating frequencies to a second operating frequency among a set of operating frequencies. The operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be performed by a frequency switch manager as described with reference to FIGS. 6 through 9.

[0189] In 1515, a second beam ID may be selected from a set of beam IDs based on frequency switching and mapping, and the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on mapping. The operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be performed by a beam selection component as described with reference to FIGS. 6 through 9.

[0190] In 1520, the UE may identify a set of beam weights for a second beam ID based on a configuration and a second operating frequency, wherein the set of beam weights is indicated by the configuration. The operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be performed by a beam weight manager as described with reference to FIGS. 6 through 9.

[0191] In 1525, the UE may receive a signal from the base station based on a set of second beam IDs and beam weights. The operations of 1525 may be performed according to the methods described herein. In some examples, aspects of the operations of 1525 may be performed by a signal receiver as described with reference to FIGS. 6 through 9.

[0192] FIG. 16 illustrates a flowchart illustrating a method (1600) for supporting beam correlation across frequency bands according to embodiments of the present disclosure. Operations of the method (1600) may be implemented by a UE (115) or its components as described herein. For example, operations of the method (1600) may be performed by a communication manager as described with reference to FIGS. 6 through 9. In some examples, the UE may perform the functions described below by executing a set of commands to control the functional elements of the UE. Additionally or alternatively, the UE may perform embodiments of the functions described below using special-purpose hardware.

[0193] In 1605, the UE may receive from a base station a configuration indicating a mapping between a set of beam IDs and a set of angular coverage ranges for each beam ID of the set of beam IDs, wherein each angular coverage range of the set of angular coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band. The operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be performed by a configuration receiver as described with reference to FIGS. 6 through 9.

[0194] In 1610, the UE may determine a frequency switch from a first operating frequency among a set of operating frequencies to a second operating frequency among a set of operating frequencies. The operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed by a frequency switch manager as described with reference to FIGS. 6 through 9.

[0195] In 1615, a second beam ID may be selected from a set of beam IDs based on frequency switching and mapping, and the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on mapping. The operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be performed by a beam selection component as described with reference to FIGS. 6 through 9.

[0196] In 1620, the UE may perform a set of beam search measurements associated with the base station based on the second beam ID. The operations of 1620 may be performed according to the methods described herein. In some examples, aspects of the operations of 1620 may be performed by a beam search component as described with reference to FIGS. 6 through 9.

[0197] In 1625, the UE may communicate with the base station using a second beam ID based on a set of beam seek measurements. The operations of 1625 may be performed according to the methods described herein. In some examples, aspects of the operations of 1625 may be performed by a communication component as described with reference to FIGS. 6 through 9.

[0198] FIG. 17 illustrates a flowchart illustrating a method (1700) for supporting beam correlation across frequency bands according to embodiments of the present disclosure. Operations of the method (1700) may be implemented by a base station (105) or its components as described herein. For example, operations of the method (1700) may be performed by a communication manager as described with reference to FIGS. 10 through 13. In some examples, the base station may perform the functions described below by executing a set of commands to control the functional elements of the base station. Additionally or alternatively, the base station may perform embodiments of the functions described below using special-purpose hardware.

[0199] In 1705, the base station may transmit to the UE a configuration indicating a mapping between a set of beam IDs and a set of angular coverage ranges for each beam ID of the set of beam IDs, wherein each angular coverage range of the set of angular coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band. The operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be performed by a configuration transmitter as described with reference to FIGS. 10 through 13.

[0200] In 1710, the base station may transmit a first signal at a first operating frequency among a set of operating frequencies using a first beam ID among a set of beam IDs, and the first signal is transmitted within a first angle coverage range among a set of angle coverage ranges corresponding to the first operating frequency according to the configuration. The operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be performed by a first frequency component as described with reference to FIGS. 10 through 13.

[0201] In 1715, the base station may transmit a second signal at a second operating frequency among a set of operating frequencies using a second beam ID among a set of beam IDs, and the second signal is transmitted within a second angle coverage range among a set of angle coverage ranges corresponding to the second operating frequency according to the configuration. The operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be performed by a second frequency component as described with reference to FIGS. 10 through 13.

[0202] FIG. 18 illustrates a flowchart illustrating a method (1800) for supporting beam correlation across frequency bands according to embodiments of the present disclosure. Operations of the method (1800) may be implemented by a base station (105) or its components as described herein. For example, operations of the method (1800) may be performed by a communication manager as described with reference to FIGS. 10 through 13. In some examples, the base station may perform the functions described below by executing a set of commands to control the functional elements of the base station. Additionally or alternatively, the base station may perform embodiments of the functions described below using special-purpose hardware.

[0203] In 1805, the base station may receive an indication of a set of operating frequencies supported by the UE. The operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be performed by an indication receiver as described with reference to FIGS. 10 through 13.

[0204] In 1810, the base station may determine a mapping between a set of beam IDs and a set of angular coverage ranges for each beam ID of the set of beam IDs based on a display. The operations of 1810 may be performed according to the methods described herein. In some examples, aspects of the operations of 1810 may be performed by a mapping manager as described with reference to FIGS. 10 through 13.

[0205] In 1815, the base station may transmit to the UE a configuration indicating a mapping between a set of beam IDs and a set of angular coverage ranges for each beam ID of the set of beam IDs, wherein each angular coverage range of the set of angular coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band. The operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be performed by a configuration transmitter as described with reference to FIGS. 10 through 13.

[0206] In 1820, the base station may transmit a first signal at a first operating frequency among a set of operating frequencies using a first beam ID among a set of beam IDs, and the first signal is transmitted within a first angle coverage range among a set of angle coverage ranges corresponding to the first operating frequency according to the configuration. The operations of 1820 may be performed according to the methods described herein. In some examples, aspects of the operations of 1820 may be performed by a first frequency component as described with reference to FIGS. 10 through 13.

[0207] In 1825, the base station may transmit a second signal at a second operating frequency among a set of operating frequencies using a second beam ID among a set of beam IDs, and the second signal is transmitted within a second angle coverage range among a set of angle coverage ranges corresponding to the second operating frequency according to the configuration. The operations of 1825 may be performed according to the methods described herein. In some examples, aspects of the operations of 1825 may be performed by a second frequency component as described with reference to FIGS. 10 through 13.

[0208] FIG. 19 illustrates a flowchart illustrating a method (1900) for supporting beam correlation across frequency bands according to embodiments of the present disclosure. Operations of the method (1900) may be implemented by a base station (105) or its components as described herein. For example, operations of the method (1900) may be performed by a communication manager as described with reference to FIGS. 10 through 13. In some examples, the base station may perform the functions described below by executing a set of commands to control the functional elements of the base station. Additionally or alternatively, the base station may perform embodiments of the functions described below using special-purpose hardware.

[0209] In 1905, the base station may determine each angular coverage range of a set of angular coverage ranges relative to the boresight of the base station’s antenna array or relative to the boresight of the UE’s antenna array. The operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be performed by a mapping manager as described with reference to FIGS. 10 through 13.

[0210] In 1910, the base station may transmit to the UE a configuration indicating a mapping between a set of beam IDs and a set of angular coverage ranges for each beam ID of the set of beam IDs, wherein each angular coverage range of the set of angular coverage ranges corresponds to an operating frequency of a set of operating frequencies within at least one frequency band. The operations of 1910 may be performed according to the methods described herein. In some examples, aspects of the operations of 1910 may be performed by a configuration transmitter as described with reference to FIGS. 10 through 13.

[0211] In 1915, the base station may transmit a first signal at a first operating frequency among a set of operating frequencies using a first beam ID among a set of beam IDs, and the first signal is transmitted within a first angle coverage range among a set of angle coverage ranges corresponding to the first operating frequency according to the configuration. The operations of 1915 may be performed according to the methods described herein. In some examples, aspects of the operations of 1915 may be performed by a first frequency component as described with reference to FIGS. 10 through 13.

[0212] In 1920, the base station may transmit a second signal at a second operating frequency among a set of operating frequencies using a second beam ID among a set of beam IDs, and the second signal is transmitted within a second angle coverage range among a set of angle coverage ranges corresponding to the second operating frequency according to the configuration. The operations of 1920 may be performed according to the methods described herein. In some examples, aspects of the operations of 1920 may be performed by a second frequency component as described with reference to FIGS. 10 through 13.

[0213] The following provides an overview of the embodiments of the present disclosure:

[0214] Aspect 1: A method for wireless communication in a UE, comprising: receiving from a base station a configuration indicating a mapping between a plurality of beam IDs and a plurality of angle coverage ranges for each of the beam IDs, wherein each of the angle coverage ranges corresponds to an operating frequency among a plurality of operating frequencies within at least one frequency band; determining a frequency switch from a first operating frequency among the plurality of operating frequencies to a second operating frequency among the plurality of operating frequencies; and selecting a second beam ID among the plurality of beam IDs based at least partially on the frequency switch and the mapping, wherein the selected second beam ID corresponds to a second angle coverage range and a second operating frequency based on the mapping.

[0215] Embodiment 2: The method of Embodiment 1 further comprises the step of identifying a set of beam weights for a second beam ID based at least partially on a configuration and a second operating frequency, wherein the set of beam weights is indicated by the configuration; and the step of receiving a signal from a base station based at least partially on the second beam ID and the set of beam weights.

[0216] Aspect 3: The method of any one of Aspects 1 and 2 further comprises the step of performing a set of beam search measurements associated with a base station based at least partially on a second beam ID; and the step of communicating with a base station using the second beam ID based at least partially on the set of beam search measurements.

[0217] Embodiment 4: The method of any of embodiments 1 to 3 further comprises the step of preemptively performing a beam failure procedure based at least partially on a configuration and frequency switch, and a second beam ID is selected at least partially based on the beam failure procedure.

[0218] Embodiment 5: The method of any of embodiments 1 to 4 further comprises the step of determining that a plurality of operating frequencies are supported by the UE; and the step of transmitting an indication of the plurality of operating frequencies to a base station.

[0219] Aspect 6: In the method of any of Aspects 1 to 5, the step of receiving a configuration includes receiving an indication of the configuration in a SIB, MIB, RRC message, layer 1 signal, layer 2 signal, capability information message, or any combination thereof.

[0220] Aspect 7: In the method of any of Aspects 1 to 6, the step of receiving the configuration includes the step of receiving the configuration as part of an initiation or initial acquisition procedure for the UE.

[0221] Embodiment 8: In the method of any of Embodiments 1 to 7, each of the plurality of angle coverage ranges is based at least partially on a global coordinate system, a local coordinate system, a constructed coordinate system, or any combination thereof.

[0222] Embodiment 9: In the method of any of embodiments 1 to 8, each of the plurality of angle coverage ranges is relative to the boresight of the antenna array of the base station or the boresight of the antenna array of the UE.

[0223] Embodiment 10: The method of any of embodiments 1 to 9 further comprises the step of determining a set of logical mappings associated with a set of indices for a plurality of beam IDs and a set of physical mappings associated with a plurality of angular coverage ranges based at least partially on the configuration, and a second beam ID is selected based at least partially on the set of logical mappings and the set of physical mappings.

[0224] Modality 11: In the method of Modality 10, a set of logical mappings corresponds to a first subset of multiple operating frequencies; and a set of physical mappings corresponds to a second subset of a set of multiple operating frequencies.

[0225] Embodiment 12: In the method of any of Embodiments 1 to 11, each of the plurality of beam IDs corresponds to an SSB, CSI-RS, SRS, or any combination thereof.

[0226] Embodiment 13: In the method of any of Embodiments 1 to 12, at least one frequency band corresponds to an adjacent or non-adjacent set of frequency bands in the millimeter wave frequency range.

[0227] Aspect 14: A method for wireless communication at a base station, comprising: transmitting to a UE a configuration indicating a mapping between a plurality of beam IDs and a plurality of angle coverage ranges for each of the beam IDs, wherein each of the angle coverage ranges corresponds to an operating frequency among a plurality of operating frequencies within at least one frequency band; transmitting a first signal at a first operating frequency among a plurality of operating frequencies using a first beam ID among a plurality of beam IDs, wherein the first signal is transmitted within a first angle coverage range among a set of a plurality of angle coverage ranges corresponding to the first operating frequency according to the configuration; and transmitting a second signal at a second operating frequency among a plurality of operating frequencies using a second beam ID among a plurality of beam IDs, wherein the second signal is transmitted within a second angle coverage range among a plurality of angle coverage ranges corresponding to the second operating frequency according to the configuration.

[0228] Embodiment 15: The method of Embodiment 14 further comprises the steps of: determining a set of beam weights for each of a plurality of beam IDs; and mapping the set of beam weights to a set of a plurality of angular coverage ranges for a set of a plurality of operating frequencies, wherein the configuration indicates the mapping of the set of beam weights to a set of angular coverage ranges for a set of a plurality of operating frequencies.

[0229] Aspect 16: A method of any of Aspects 14 and 15 further comprises the steps of: receiving a representation of a plurality of operating frequencies supported by a UE; and determining a mapping between a plurality of beam IDs and a plurality of angular coverage ranges for each of the plurality of beam IDs based at least partially on the representation.

[0230] Aspect 17: The method of any of Aspects 14 to 16 further comprises the step of determining each of the angle coverage ranges of a plurality of angle coverage ranges based at least partially on a global coordinate system, a local coordinate system, a constructed coordinate system, or any combination thereof.

[0231] Embodiment 18: The method of any of embodiments 14 to 17 further comprises the step of determining each of a plurality of angular coverage ranges relative to the boresight of the antenna array of a base station or relative to the boresight of the antenna array of a UE.

[0232] Embodiment 19: The method of any of embodiments 14 to 18 further comprises the step of determining a plurality of angular coverage ranges for each of the plurality of beam IDs based at least partially on individual beam widths for each beam ID.

[0233] Mode 20: The method of any of modes 14 through 19 is,

[0234] The configuration further includes the step of determining a set of logical mappings associated with a set of indices and a set of physical mappings associated with multiple angle coverage ranges, and the configuration indicates the set of logical mappings and the set of physical mappings.

[0235] Modality 21: In the method of Modality 20, a set of logical mappings corresponds to a first subset of multiple operating frequencies; and a set of physical mappings corresponds to a second subset of a set of multiple operating frequencies.

[0236] Aspect 22: In the method of any of Aspects 14 to 21, the step of transmitting a configuration includes transmitting a representation of the configuration in a SIB, MIB, RRC message, Layer 1 signal, Layer 2 signal, capability information message, or any combination thereof.

[0237] Aspect 23: In the method of any of Aspects 14 to 22, the step of transmitting a configuration includes the step of transmitting a configuration as part of a start or initial acquisition procedure for the UE.

[0238] Embodiment 24: In any of the methods of Embodiments 14 to 23, each of the plurality of beam IDs corresponds to an SSB, CSI-RS, SRS, or any combination thereof.

[0239] Embodiment 25: In the method of any of embodiments 14 to 24, at least one frequency band corresponds to an adjacent or non-adjacent set of frequency bands in the millimeter wave frequency range.

[0240] Aspect 26: A device for wireless communication in a UE, comprising a processor, a memory coupled to the processor, and instructions stored in the memory and executable by the processor to enable the device to perform a method of any of embodiments 1 to 13.

[0241] Aspect 27: A device for wireless communication in a UE comprising at least one means for performing the method of any of Aspects 1 to 13.

[0242] Aspect 28: A non-transient computer-readable medium for storing code for wireless communication in a UE, wherein the code comprises instructions executable by a processor to perform the method of any of Aspects 1 to 13.

[0243] Aspect 29: A device for wireless communication at a base station comprising a processor, a memory coupled to the processor, and instructions stored in the memory and executable by the processor to enable the device to perform the method of any of Aspects 14 to 25.

[0244] Aspect 30: An apparatus for wireless communication at a base station comprising at least one means for performing the method of any of aspects 14 to 25.

[0245] Aspect 31: A non-transient computer-readable medium for storing code for wireless communication at a base station, wherein the code comprises instructions executable by a processor to perform the method of any of Aspects 14 to 25.

[0246] It should be noted that the methods described in this specification describe possible implementations, and that the operations and steps may be rearranged or otherwise modified, and that other implementations are possible. Additionally, aspects from two or more of the methods may be combined.

[0247] Although embodiments of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most descriptions, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communication systems such as UMB (Ultra Mobile Broadband), IEEE (Institute of Electrical and Electronics Engineers) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, and Flash-OFDM, as well as other systems and wireless technologies not explicitly mentioned in this specification.

[0248] The information and signals described herein may be represented using any of the various different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be mentioned throughout the description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0249] The various exemplary blocks and components described in connection with the disclosure of this specification may be implemented or performed as general-purpose processors, DSPs, ASICs, CPUs, FPGAs, or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but alternatively, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a digital signal processor (DSP) and a microprocessor, multiple microprocessors, one or more microprocessors with a DSP core, or any other such configuration).

[0250] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. Where implemented in software executed by a processor, the functions may be stored on or transmitted through a computer-readable medium as one or more instructions or codes. Other examples and implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of the software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination thereof. Features implementing the functions may also be physically located at various positions, including distributed so that parts of the functions are implemented at different physical locations.

[0251] Computer-readable media include both communication media and non-transient computer storage media, comprising any medium that facilitates the transfer of a computer program from one place to another. A non-transient storage medium may be any available medium that can be accessed by a general-purpose or special-purpose computer. By example, but not by limitation, non-transient computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, magnetic disc storage or other magnetic storage devices, or any other non-transient medium that may be used to transfer or store desired program code means in the form of instructions or data structures and may be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Additionally, any connection is appropriately referred to as a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology such as infrared, radio, and microwave, such coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology such as infrared, radio, and microwave is included within the definition of a computer-readable medium. As used herein, disks and discs include CDs, laser discs, optical discs, digital multifunction discs (DVDs), floppy discs, and Blu-ray discs, wherein disks typically reproduce data magnetically, while discs reproduce data optically using a laser. The above combinations are also included within the scope of computer-readable media.

[0252] As used herein, including in the claims, the word “or” as used in a list of items (e.g., a list of items beginning with a phrase such as “at least one of” or “one or more of”) indicates a comprehensive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A, B, and C). Additionally, as used herein, the phrase “based on” should not be interpreted as a reference to a closed set of conditions. For example, a step of an example described as “based on condition A” may be based on both condition A and condition B without departing from the scope of the disclosure. That is, as used herein, the phrase “based on” should be interpreted in the same way as the phrase “at least partially based on”.

[0253] In the attached drawings, similar components or features may have the same reference label. Additionally, various components of the same type may be distinguished by a dash and a second label following the reference label to distinguish similar components. Where only the first reference label is used in the specification, the description may apply to any one of the similar components having the same first reference label, regardless of the second reference label or other subsequent reference labels.

[0254] The descriptions provided herein in conjunction with the accompanying drawings describe configurations of examples and do not represent all examples that may be implemented or are within the scope of the claims. As used herein, the term “example” means “acting as an example, case, or example” and does not mean that it is “preferably” or “advantageous” over other examples. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some examples, known structures and devices are illustrated in block diagram form to avoid obscuring the concepts of the described examples.

[0255] The description in this specification is provided to enable a person skilled in the art to manufacture or use the present disclosure. Various modifications to the present disclosure will be obvious to a person skilled in the art, and general principles defined in this specification may be applied to other variations without departing from the scope of the present disclosure. Accordingly, the present disclosure is not limited to the examples and designs described in this specification, but conforms to the broadest scope consistent with the principles and novel features disclosed in this specification.

Claims

Claim 1 A method for wireless communication in a user device (UE), comprising: receiving from a base station a configuration indicating a mapping between a plurality of beam identifiers and a plurality of angle coverage ranges for each of the plurality of beam identifiers, wherein each of the angle coverage ranges corresponds to an operating frequency among a plurality of operating frequencies within at least one frequency band; determining a frequency switch from a first operating frequency among the plurality of operating frequencies to a second operating frequency among the plurality of operating frequencies; and selecting a second beam identifier among the plurality of beam identifiers based at least partially on the frequency switch and the mapping, wherein the selected second beam identifier corresponds to a second angle coverage range based on the mapping and the second operating frequency. Claim 2 A method for wireless communication in a user device (UE), further comprising: a step of identifying a set of beam weights for a second beam identifier based at least partially on the configuration and the second operating frequency, wherein the set of beam weights is indicated by the configuration; and a step of receiving a signal from the base station based at least partially on the second beam identifier and the set of beam weights. Claim 3 A method for wireless communication in a user device (UE), further comprising: performing a set of beam search measurements associated with the base station based at least partially on the second beam identifier in claim 1; and communicating with the base station using the second beam identifier based at least partially on the set of beam search measurements. Claim 4 A method for wireless communication in a user device (UE), wherein, in claim 1, the method further comprises the step of preemptively performing a beam failure procedure based at least partially on the configuration and the frequency switch, and the second beam identifier is selected at least partially based on the beam failure procedure. Claim 5 A method for wireless communication in a user device (UE), comprising, in claim 1, a step of determining that the plurality of operating frequencies are supported by the UE; and a step of transmitting an indication of the plurality of operating frequencies to the base station. Claim 6 A method for wireless communication in a user device (UE), wherein the step of receiving the configuration comprises receiving a representation of the configuration in a system information block, a master information block, a wireless resource control message, a layer 1 signal, a layer 2 signal, a capability information message, or any combination thereof. Claim 7 A method for wireless communication in a user device (UE), wherein the step of receiving the configuration comprises receiving the configuration as part of a start or initial acquisition procedure for the UE. Claim 8 A method for wireless communication in a user device (UE), wherein each of the plurality of angle coverage ranges is based at least partially on a global coordinate system, a local coordinate system, a configured coordinate system, or any combination thereof. Claim 9 A method for wireless communication in a user device (UE), wherein each of the plurality of angle coverage ranges is relative to the boresight of the antenna array of the base station or the boresight of the antenna array of the UE. Claim 10 A method for wireless communication in a user device (UE), wherein, in claim 1, the method further comprises the step of determining a set of logical mappings associated with a set of indices for the plurality of beam identifiers and a set of physical mappings associated with the plurality of angle coverage ranges based at least partially on the configuration, and wherein the second beam identifier is selected at least partially based on the set of logical mappings and the set of physical mappings. Claim 11 A method for wireless communication in a user device (UE), wherein, in claim 10, the set of logical mappings corresponds to a first subset of the plurality of operating frequencies; and the set of physical mappings corresponds to a second subset of the plurality of operating frequencies. Claim 12 A method for wireless communication in a user device (UE), wherein, in claim 1, each of the plurality of beam identifiers corresponds to a synchronization signal block, a channel state information reference signal, a sounding reference signal, or any combination thereof. Claim 13 A method for wireless communication in a user device (UE), wherein, in claim 1, at least one frequency band corresponds to an adjacent or non-adjacent set of frequency bands in a millimeter wave frequency range. Claim 14 A method for wireless communication at a base station, comprising: transmitting to a user equipment (UE) a configuration indicating a mapping between a plurality of beam identifiers and a plurality of angle coverage ranges for each of the plurality of beam identifiers, wherein each of the plurality of angle coverage ranges corresponds to an operating frequency among a plurality of operating frequencies within at least one frequency band; transmitting a first signal at a first operating frequency among the plurality of operating frequencies using a first beam identifier among the plurality of beam identifiers, wherein the first signal is transmitted within a first angle coverage range among the plurality of angle coverage ranges corresponding to the first operating frequency according to the configuration; A method for wireless communication at a base station, comprising the step of transmitting a second signal at a second operating frequency among a plurality of operating frequencies using a second beam identifier among the plurality of beam identifiers, wherein the second signal is transmitted within a second angle coverage range among the plurality of angle coverage ranges corresponding to the second operating frequency according to the configuration. Claim 15 A method for wireless communication at a base station, wherein, in claim 14, the method further comprises the steps of: determining a set of beam weights for each of the plurality of beam identifiers; and mapping the set of beam weights to the plurality of angle coverage ranges for the plurality of operating frequencies, wherein the configuration indicates the mapping of the set of beam weights to the plurality of angle coverage ranges for the plurality of operating frequencies. Claim 16 A method for wireless communication at a base station according to claim 14, further comprising: receiving a representation of the plurality of operating frequencies supported by the UE; and determining a mapping between the plurality of beam identifiers and the plurality of angular coverage ranges for each of the plurality of beam identifiers based at least partially on the representation. Claim 17 A method for wireless communication at a base station, further comprising the step of determining each of the plurality of angle coverage ranges based at least partially on a global coordinate system, a local coordinate system, a configured coordinate system, or any combination thereof, in claim 14. Claim 18 A method for wireless communication at a base station, further comprising the step of determining each of the plurality of angle coverage ranges relative to the boresight of the antenna array of the base station or relative to the boresight of the antenna array of the UE. Claim 19 A method for wireless communication at a base station, further comprising the step of determining the plurality of angular coverage ranges for each of the plurality of beam identifiers based at least partially on the individual beam widths for each beam identifier. Claim 20 A method for wireless communication at a base station, wherein, in claim 14, the method further comprises the step of determining a set of logical mappings associated with a set of indices and a set of physical mappings associated with the plurality of angle coverage ranges, wherein the configuration indicates the set of logical mappings and the set of physical mappings. Claim 21 A method for wireless communication at a base station, wherein, in claim 20, the set of logical mappings corresponds to a first subset of the plurality of operating frequencies; and the set of physical mappings corresponds to a second subset of the plurality of operating frequencies. Claim 22 A method for wireless communication at a base station, wherein the step of transmitting the configuration comprises transmitting a representation of the configuration in a system information block, a master information block, a wireless resource control message, a layer 1 signal, a layer 2 signal, a capability information message, or any combination thereof. Claim 23 A method for wireless communication at a base station, wherein the step of transmitting the configuration comprises the step of transmitting the configuration as part of a start or initial acquisition procedure for the UE. Claim 24 A method for wireless communication at a base station, wherein each of the plurality of beam identifiers corresponds to a synchronization signal block, a channel state information reference signal, a sounding reference signal, or any combination thereof. Claim 25 A method for wireless communication at a base station, wherein, in claim 14, the at least one frequency band corresponds to an adjacent or non-adjacent set of frequency bands in the millimeter wave frequency range. Claim 26 A device for wireless communication in a user device (UE), comprising: a processor; a memory coupled to the processor; and instructions stored in the memory, wherein the instructions enable the device to receive, from a base station, a configuration indicating a mapping between a plurality of beam identifiers and a plurality of angle coverage ranges for each of the plurality of beam identifiers, wherein each of the angle coverage ranges corresponds to an operating frequency among a plurality of operating frequencies within at least one frequency band; to determine a frequency switch from a first operating frequency among the plurality of operating frequencies to a second operating frequency among the plurality of operating frequencies; and to select a second beam identifier among the plurality of beam identifiers based at least partially on the frequency switch and the mapping, wherein the selected second beam identifier corresponds to a second angle coverage range and the second operating frequency based on the mapping, the device being executable by the processor. Claim 27 In claim 26, the commands are also executable by the processor to enable the device to: identify a set of beam weights for the second beam identifier based at least partially on the configuration and the second operating frequency, wherein the set of beam weights is indicated by the configuration; and to receive a signal from the base station based at least partially on the second beam identifier and the set of beam weights, the device for wireless communication in a user equipment (UE). Claim 28 In claim 26, the above commands are also executable by the processor to cause the device to: perform a set of beam seek measurements associated with the base station based at least partially on the second beam identifier; and communicate with the base station using the second beam identifier based at least partially on the set of beam seek measurements, for a device for wireless communication in a user device (UE). Claim 29 A device for wireless communication at a base station comprises: a processor; a memory coupled to the processor; and instructions stored in the memory, wherein the instructions cause the device to transmit to a user equipment (UE) a configuration indicating a mapping between a plurality of beam identifiers and a plurality of angle coverage ranges for each of the plurality of beam identifiers, wherein each of the angle coverage ranges corresponds to an operating frequency among a plurality of operating frequencies within at least one frequency band; wherein the device causes the device to transmit a first signal at a first operating frequency among the plurality of operating frequencies using a first beam identifier among the plurality of beam identifiers, wherein the first signal is transmitted within a first angle coverage range among the plurality of angle coverage ranges corresponding to the first operating frequency according to the configuration; A device for wireless communication at a base station, which is executable by the processor to transmit a second signal at a second operating frequency among the plurality of operating frequencies using a second beam identifier among the plurality of beam identifiers, wherein the second signal is transmitted within a second angle coverage range among the plurality of angle coverage ranges corresponding to the second operating frequency according to the configuration. Claim 30 A device for wireless communication at a base station, wherein, in claim 29, the commands are also executable by the processor to: cause the device to receive a representation of the plurality of operating frequencies supported by the UE; and to determine a mapping between the plurality of beam identifiers and the plurality of angular coverage ranges for each of the plurality of beam identifiers based at least partially on the representation.

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