Techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights

Abstract

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit a first control message indicating static or dynamic capabilities of the UE to support hybrid beamforming and analog beamforming based on adaptive beam weights. The UE may receive a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the adaptive beam weight based analog beamforming. The UE may transmit a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, and in response, transmit a second set of reference signals via the second set of reference signal resources. A third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight based analog beamforming is received.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims the benefit of U.S. patent application No. 17 / 945,879, filed by Raghavan et al. on September 15, 2022, entitled “TECHNIQUESFOR SWITCHING BETWEEN ADAPTIVE BEAM WEIGHTS-BASED ANALOG BEAMFORMING AND HYBRID BEAMFORMING,” which is assigned to the assignee of this application and is expressly incorporated herein by reference. Technical Field

[0003] The present disclosure relates to wireless communications, including techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. 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 fourth generation (4G) systems (such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (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, each of which supports wireless communications for communication devices, which may be referred to as user equipment (UE). Summary of the invention

[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights. For example, the described techniques allow a user equipment (UE) to be configured to switch between communications using hybrid beamforming and communications using analog beamforming (e.g., analog beamforming based on adaptive beam weights), or to be configured to switch between communications using hybrid beamforming and communications using analog beamforming. In some examples, a network node or a network node may configure a UE using two separate reference signal resources. The UE may send a first set of reference signals using a hybrid beamforming technique and a second set of reference signals using an analog beamforming technique. The network node may measure the set of reference signals and may instruct the UE to switch beamforming techniques based on the measurements. For example, the network node may indicate a rank indicator associated with a different beamforming technique (e.g., different from a currently used beamforming technique), configuring the UE to switch from analog beamforming to hybrid beamforming or from hybrid beamforming to analog beamforming. In some cases, the UE may determine to switch and report a rank indicator (RI) to indicate the switch. The UE may determine to switch beamforming techniques based on the granularity of the beamwidth used in beam refinement, channel conditions, or power / thermal overhead at the UE. For example, hybrid beamforming may be used when the UE is configured for P1 beam refinement, and analog beamforming may be used when the UE is configured for P3 beam refinement.

[0006] A method for wireless communication at a network entity is described. The method may include: receiving a first control message indicating a static or dynamic capability of a UE to support hybrid beamforming and analog beamforming based on adaptive beam weights; sending a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights; receiving a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming and the second set of reference signals corresponding to the analog beamforming based on adaptive beam weights; and sending a third control message indicating a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals.

[0007] A device for wireless communication at a network entity is described. The device may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the device to: receive a first control message indicating a static or dynamic capability of a UE to support hybrid beamforming and analog beamforming based on adaptive beam weights; send a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights; receive a first set of reference signals via the first set of reference signal resources and receive a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming, and the second set of reference signals corresponding to the analog beamforming based on adaptive beam weights; and send a third control message indicating a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals.

[0008] Another apparatus for wireless communication at a network entity is described. The apparatus may include: a first control message for receiving a static or dynamic capability of a UE to support hybrid beamforming and analog beamforming based on adaptive beam weights; a second control message for sending a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights; a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming and the second set of reference signals corresponding to the analog beamforming based on adaptive beam weights; and a third control message for sending a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals.

[0009] A non-transitory computer-readable medium storing code for wireless communication at a network entity is described. The code may include instructions that can be executed by a processor to perform the following operations: receiving a first control message indicating a static or dynamic capability of a UE to support hybrid beamforming and analog beamforming based on adaptive beam weights; sending a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights; receiving a first set of reference signals via the first set of reference signal resources and receiving a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming and the second set of reference signals corresponding to the analog beamforming based on adaptive beam weights; and sending a third control message indicating a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals.

[0010] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving, in response to the rank indicator, a message indicating a preference between the hybrid beamforming and the adaptive beam weight-based analog beamforming.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the third control message may include operations, features, components, or instructions for sending the third control message indicating the rank indicator associated with the hybrid beamforming based on the first set of received reference signals and the second set of reference signals.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the third control message may include operations, features, components, or instructions for: sending the third control message indicating one or more parameters for a power control loop or a rate control loop associated with the hybrid beamforming.

[0013] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: receiving an uplink data message according to the hybrid beamforming; and sending a downlink data message according to the hybrid beamforming.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the third control message may include operations, features, components, or instructions for sending the third control message indicating the rank indicator associated with the adaptive beam weight-based analog beamforming based on the first set of received reference signals and the second set of reference signals.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the third control message may include operations, features, components, or instructions for: sending the third control message indicating one or more parameters for a power control loop or a rate control loop associated with the adaptive beam weight-based analog beamforming.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: receiving an uplink data message according to the adaptive beam weight-based analog beamforming; and sending a downlink data message according to the adaptive beam weight-based analog beamforming.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the second control message may include operations, features, components, or instructions for sending the second control message indicating a first set of sounding reference signal (SRS) resources and a second set of SRS resources, wherein the first set of reference signals may be a first set of SRSs and the second set of reference signals may be a second set of SRSs.

[0018] A method for wireless communication at a UE is described. The method may include: sending a first control message indicating that the UE supports a static or dynamic capability of hybrid beamforming and analog beamforming based on adaptive beam weights; receiving a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights; sending a first set of reference signals via the first set of reference signal resources and sending a second set of reference signals via the second set of reference signal resources, the first set of reference signals being sent according to the hybrid beamforming and the second set of reference signals being sent according to the analog beamforming based on adaptive beam weights; and receiving a third control message indicating a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals.

[0019] A device for wireless communication at a UE is described. The device may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the device to: send a first control message indicating that the UE supports a static or dynamic capability of hybrid beamforming and analog beamforming based on adaptive beam weights; receive a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights; send a first set of reference signals via the first set of reference signal resources and send a second set of reference signals via the second set of reference signal resources, the first set of reference signals being sent according to the hybrid beamforming, and the second set of reference signals being sent according to the analog beamforming based on adaptive beam weights; and receive a third control message indicating a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals.

[0020] Another apparatus for wireless communication at a UE is described. The apparatus may include: a first control message for sending a static or dynamic capability of the UE to support hybrid beamforming and analog beamforming based on adaptive beam weights; a second control message for receiving a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights; a first set of reference signals sent via the first set of reference signal resources and a second set of reference signals sent via the second set of reference signal resources, the first set of reference signals being sent according to the hybrid beamforming and the second set of reference signals being sent according to the analog beamforming based on adaptive beam weights; and a third control message for receiving a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals.

[0021] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions that can be executed by a processor to perform the following operations: sending a first control message indicating that the UE supports a static or dynamic capability of hybrid beamforming and analog beamforming based on adaptive beam weights; receiving a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights; sending a first set of reference signals via the first set of reference signal resources and sending a second set of reference signals via the second set of reference signal resources, the first set of reference signals being sent according to the hybrid beamforming and the second set of reference signals being sent according to the analog beamforming based on adaptive beam weights; and receiving a third control message indicating a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals.

[0022] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending a message indicating a preference between the hybrid beamforming and the adaptive beam weight-based analog beamforming in response to the rank indicator.

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the third control message may include operations, features, components, or instructions for receiving the third control message indicating the rank indicator associated with the hybrid beamforming based on the first set of transmitted reference signals and the second set of reference signals.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the third control message may include operations, features, components, or instructions for: receiving the third control message indicating one or more parameters for a power control loop or a rate control loop associated with the hybrid beamforming.

[0025] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: sending an uplink data message according to the hybrid beamforming; and receiving a downlink data message according to the hybrid beamforming.

[0026] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the third control message may include operations, features, components, or instructions for receiving the third control message indicating the rank indicator associated with the adaptive beam weight-based analog beamforming based on the first set of transmitted reference signals and the second set of reference signals.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the third control message may include operations, features, components, or instructions for: receiving the third control message indicating one or more parameters for a power control loop or a rate control loop associated with the adaptive beam weight-based analog beamforming.

[0028] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: sending an uplink data message according to the adaptive beam weight-based analog beamforming; and receiving a downlink data message according to the adaptive beam weight-based analog beamforming.

[0029] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the second control message may include operations, features, components, or instructions for: receiving the second control message indicating a first set of sounding reference signal (SRS) resources and a second set of SRS resources, wherein the first set of reference signals may be a first set of SRSs and the second set of reference signals may be a second set of SRSs.

[0030] A method for wireless communication at a UE is described. The method may include: communicating according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights; sending a control message indicating a rank indicator associated with a second beamforming configuration based on switching to the second beamforming configuration; and communicating according to the second beamforming configuration based on sending the control message indicating the rank indicator associated with the second beamforming configuration.

[0031] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to: communicate according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights; send a control message indicating a rank indicator associated with a second beamforming configuration based on switching to the second beamforming configuration; and communicate according to the second beamforming configuration based on sending the control message indicating the rank indicator associated with the second beamforming configuration.

[0032] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for communicating according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights; means for sending a control message indicating a rank indicator associated with a second beamforming configuration based on switching to the second beamforming configuration; and means for communicating according to the second beamforming configuration based on sending the control message indicating the rank indicator associated with the second beamforming configuration.

[0033] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: communicate according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights; send a control message indicating a rank indicator associated with a second beamforming configuration based on switching to the second beamforming configuration; and communicate according to the second beamforming configuration based on sending the control message indicating the rank indicator associated with the second beamforming configuration.

[0034] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for switching to the second beamforming configuration based on a granularity of beam refinement for communicating according to the first beamforming configuration.

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control message indicates a rank indicator associated with the hybrid beamforming configuration based on using a low granularity beam refinement procedure, and switching to the second beamforming configuration includes switching from the adaptive beam weight-based analog beamforming configuration to the hybrid beamforming configuration.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the control message indicates a rank indicator associated with an adaptive beam weight-based analog beamforming configuration based on a fine granularity beam refinement procedure, and switching to the second beamforming configuration includes switching from the hybrid beamforming configuration to the adaptive beam weight-based analog beamforming configuration.

[0037] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for: switching to the second beamforming configuration based on channel conditions when communicating according to the first beamforming configuration.

[0038] Some examples of the methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for switching to the second beamforming configuration based on transmit power overhead or thermal overhead or both. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 An example of a wireless communication system supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is illustrated.

[0040] Figure 2 An example of a wireless communication system supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is illustrated.

[0041] Figure 3 An example of a process flow supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights in accordance with one or more aspects of the present disclosure is illustrated.

[0042] Figure 4 An example of a process flow supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights in accordance with one or more aspects of the present disclosure is illustrated.

[0043] Figure 5 and Figure 6 A block diagram of a device supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights in accordance with one or more aspects of the present disclosure is shown.

[0044] Figure 7 A block diagram of a communication manager supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights in accordance with one or more aspects of the present disclosure is shown.

[0045] Figure 8 A diagram of a system including a device supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights in accordance with one or more aspects of the present disclosure is shown.

[0046] Fig. 9 and Fig.10 A block diagram of a device supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights in accordance with one or more aspects of the present disclosure is shown.

[0047] Fig.11 A block diagram of a communication manager supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights in accordance with one or more aspects of the present disclosure is shown.

[0048] Fig.12 A diagram of a system including a device supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights in accordance with one or more aspects of the present disclosure is shown.

[0049] Figures 13 to 15 A flow chart illustrating a method supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights in accordance with one or more aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0050] A user equipment (UE) and a network node, or a network node, may communicate using beamforming signaling. In some examples, the UE may support multiple different types of beamforming signaling, such as analog beamforming and hybrid beamforming. For example, the UE may use two radio frequency (RF) chains at the UE to support analog beamforming based on adaptive beam weights, which enables the UE to use all possible phase shifter and amplitude control combinations for transmission / reception. Additionally, the UE may use more (e.g., four) RF chains to support hybrid beamforming for higher-rank multiple-input multiple-output (MIMO) communications. Based on different channel environments, use cases, or configurations, analog beamforming or hybrid beamforming may be more efficient.

[0051] The wireless communication system described herein supports techniques for configuring a UE to communicate using hybrid beamforming or analog beamforming. The UE may switch between communications using hybrid beamforming and communications using analog beamforming (e.g., analog beamforming based on adaptive beam weights) or be configured to switch between communications using hybrid beamforming and communications using analog beamforming. In some examples, a network node may configure the UE using two separate reference signal resources. The UE may send a first set of reference signals using a hybrid beamforming technique and send a second set of reference signals using an analog beamforming technique. The network node may measure a set of reference signals and may instruct the UE to switch beamforming techniques based on the measurements. For example, the network node may indicate a rank indicator associated with a different beamforming technique (e.g., different from the beamforming technique currently used), configure the UE to switch from analog beamforming to hybrid beamforming or from hybrid beamforming to analog beamforming. In some cases, the UE may determine the switch and report the rank indicator to indicate the switch. The UE may determine to switch beamforming techniques based on the granularity of the beamwidth used in beam refinement, channel conditions, or power / thermal overhead at the UE. For example, hybrid beamforming may be used when the UE is configured for P1 beam refinement, and analog beamforming may be used when the UE is configured for P3 beam refinement.

[0052] Various aspects of the present disclosure are first described in the context of a wireless communication system. Various aspects of the present disclosure are further illustrated by apparatus diagrams, system diagrams, and flow diagrams involving techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights, and are described with reference to these diagrams.

[0053] Figure 1 An example of a wireless communication system 100 that supports techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is illustrated. The wireless communication system 100 may include one or more network nodes 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 Advanced LTE (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating according to other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0054] The network nodes 105 may be dispersed throughout a geographic area to form a wireless communication system 100, and may include devices in different forms or with different capabilities. In various examples, the network nodes 105 may be referred to as network elements, mobility elements, radio access network (RAN) nodes, or network equipment, among other names. In some examples, the network nodes 105 and the UE 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, the network nodes 105 may support a coverage area 110 (e.g., a geographic coverage area), and the UE 115 and the network nodes 105 may establish one or more communication links 125 over the coverage area. The coverage area 110 may be an example of a geographic area over which the network nodes 105 and the UE 115 may support signal communications according to one or more radio access technologies (RATs).

[0055] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile, or stationary and mobile at different times. The UEs 115 may be devices in different forms or with different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communication with various types of devices, such as Figure 1 Communicate with other UE 115 or network node 105) as shown.

[0056] As described herein, a node of the wireless communication system 100 (which may be referred to as a network node or a wireless node) may be a network node 105 (e.g., any network node described herein), a UE 115 (e.g., any UE described herein), a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, the node may be a UE 115. As another example, the node may be a network node 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network node 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network node 105, and the third node may be a network node 105. In other aspects of this example, the first node, the second node, and the third node may be different relative to these examples. Similarly, references to UE 115, network node 105, apparatus, device, computing system, etc. may include disclosure of UE 115, network node 105, apparatus, device, computing system, etc. as nodes. For example, disclosure that UE 115 is configured to receive information from network node 105 also discloses that the first node is configured to receive information from a second node.

[0057] In some examples, the network nodes 105 may communicate with the core network 130, or communicate with each other, or both. For example, the network nodes 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3 or other interface protocols). In some examples, the network nodes 105 may communicate with each other via the backhaul communication links 120 (e.g., according to X2, Xn or other interface protocols) directly (e.g., directly between the network nodes 105) or indirectly (e.g., via the core network 130). In some examples, the network nodes 105 may communicate with each other via the midhaul communication links 162 (e.g., according to the midhaul interface protocol) or the fronthaul communication links 168 (e.g., according to the fronthaul interface protocol) or any combination thereof. The backhaul communication links 120, the midhaul communication links 162, or the fronthaul communication links 168 may be or include one or more wired links (e.g., electrical links, optical fiber links), one or more wireless links (e.g., radio links, wireless optical links), etc. or various combinations thereof. UE 115 may communicate with core network 130 via communication link 155 .

[0058] One or more of the network nodes 105 described herein may include or may be referred to as a base station 140 (e.g., a transceiver base station, a radio base station, an NR base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a 5G NB, a next generation eNB (ng-eNB), a Home Node B, a Home Evolved Node B, or other suitable terms). In some examples, the network node 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack physically or logically integrated within a single network node 105 (e.g., a single RAN node, such as a base station 140).

[0059] In some examples, the network node 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that may be configured to utilize a protocol stack that is physically or logically distributed between two or more network nodes 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN)). For example, the network node 105 may include one or more of the following: a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN intelligent controller (RIC) 175 (e.g., a near real-time RIC (near RT RIC), a non-real-time RIC (non-RT RIC)), a service management and orchestration (SMO) 180 system, or any combination thereof. The RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmit receive point (TRP). One or more components of a network node 105 in a disaggregated RAN architecture may be co-located, or one or more components of a network node 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network nodes 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0060] The functional split between CU 160, DU 165, and RU 170 is flexible and may support different functionalities, depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a functional split of a protocol stack may be employed between CU 160 and DU 165 such that CU 160 may support one or more layers of a protocol stack and DU 165 may support one or more different layers of a protocol stack. In some examples, CU 160 may host higher protocol layer (e.g., layer 3 (L3), layer 2 (L2)) functionality and signaling (e.g., radio resource control (RRC), service data adaptation protocol (SDAP), packet data convergence protocol (PDCP)). The CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally or alternatively, a functional split of the protocol stack may be employed between the DU 165 and the RU 170, such that the DU 165 may support one or more layers of the protocol stack, and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or more different cells (e.g., via one or more RUs 170). In some cases, the functional split between CU 160 and DU 165 or between DU 165 and RU 170 can be within the protocol layer (e.g., some functions of the protocol layer can be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by different ones of CU 160, DU 165, or RU 170). CU 160 can be further functionally split into CU control plane (CU-CP) and CU user plane (CU-UP) functions. CU 160 can be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and DU 165 can be connected to one or more RUs 170 via fronthaul communication links 168 (e.g., open fronthaul (FH) interface). In some examples, midhaul communication link 162 or fronthaul communication link 168 may be implemented based on an interface (e.g., a channel) between layers of a protocol stack supported by respective network nodes 105 communicating via such communication links.

[0061] In some wireless communication systems (e.g., wireless communication system 100), infrastructure and spectrum resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing an IAB network architecture (e.g., to core network 130). In some cases, in an IAB network, one or more network nodes 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as a donor entity or an IAB donor. One or more DUs 165 or one or more RUs 170 may be controlled in part by one or more CUs 160 associated with a donor network node 105 (e.g., a donor base station 140). One or more donor network nodes 105 (e.g., IAB donors) may communicate with one or more additional network nodes 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120). The IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a coupled IAB donor's DU 165. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115, or may share the same antennas of the IAB node 104 (e.g., of the RU 170) for access via the DU 165 of the IAB node 104 (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, the IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of the IAB node 104) may be configured to operate according to the techniques described herein.

[0062] For example, an access network (AN) or RAN may include an access node (e.g., an IAB donor), communications between an IAB node 104, and one or more UEs 115. The IAB donor may facilitate connectivity between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130). That is, the IAB donor may refer to a RAN node having a wired or wireless connection to the core network 130. The IAB donor may include a CU 160 and at least one DU 165 (e.g., and RU 170), in which case the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link). The IAB donor and the IAB node 104 may communicate via an F1 interface according to a protocol defining signaling messages (e.g., an F1AP protocol). Additionally or alternatively, CU 160 may communicate with the core network via an interface (which may be an example of a portion of a backhaul link) and may communicate with other CUs 160 (e.g., CUs 160 associated with alternative IAB donors) via an Xn-C interface (which may be an example of a portion of a backhaul link).

[0063] The IAB node 104 may refer to a RAN node that provides IAB functions (e.g., access for UE 115, wireless self-backhaul capabilities, etc.). The DU 165 may act as a distributed scheduling node toward a child node associated with the IAB node 104, and the IAB-MT may act as a scheduled node toward a parent node associated with the IAB node 104. That is, the IAB donor may be referred to as a parent node that communicates with one or more child nodes (e.g., the IAB donor may relay the UE's transmission through one or more other IAB nodes 104). Additionally or alternatively, the IAB node 104 may also be referred to as a parent node or child node of other IAB nodes 104, depending on the relay chain or configuration of the AN. Therefore, the IAB-MT entity of the IAB node 104 may provide a Uu interface for the child IAB node 104 to receive signaling from the parent IAB node 104, and the DU interface (e.g., DU 165) may provide a Uu interface for the parent IAB node 104 to signal to the child IAB node 104 or the UE 115.

[0064] For example, the IAB node 104 may be referred to as a parent node supporting communications for a child IAB node or as a child IAB node associated with an IAB donor, or both. The IAB donor may include a CU 160 having a wired or wireless connection (e.g., backhaul communication link 120) to the core network 130, and may act as a parent node of the IAB node 104. For example, the DU 165 of the IAB donor may relay the transmission to the UE 115 through the IAB node 104, or may directly signal the transmission to the UE 115, or both. The CU 160 of the IAB donor may signal the IAB node 104 via the F1 interface that the communication link is established, and the IAB node 104 may schedule the transmission (e.g., the transmission relayed from the IAB donor to the UE 115) through the DU 165. That is, data may be relayed to and from the IAB node 104 via the NR Uu interface of the MT to the IAB node 104 via signaling. Communications with the IAB node 104 may be scheduled by the DU 165 of the IAB donor, and communications with the IAB node 104 may be scheduled by the DU 165 of the IAB node 104 .

[0065] In the case where the techniques described herein are applied to the context of a decomposed RAN architecture, one or more components of the decomposed RAN architecture may be configured to support the techniques described herein for switching between analog beamforming based on adaptive beam weights and hybrid beamforming (e.g., where hybrid beamforming is not a subcase of adaptive analog beamforming). For example, some operations described as being performed by a UE 115 or a network node 105 (e.g., a base station 140) may additionally or alternatively be performed by one or more components of the decomposed RAN architecture (e.g., an IAB node 104, a DU 165, a CU 160, a RU 170, a RIC 175, a SMO 180).

[0066] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable term, where a "device" may also be referred to as a unit, a station, a terminal, or a client, etc. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or may be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0067] The UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which may sometimes act as relays, and network nodes 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, and other examples, such as Figure 1 shown.

[0068] The UE 115 and the network node 105 may wirelessly communicate with each other via one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term "carrier" may refer to a collection of RF spectrum resources having a physical layer structure defined for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of an RF spectrum band (e.g., a bandwidth portion (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 acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support communications with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for both frequency division duplex (FDD) and time division duplex (TDD) component carriers. Communication between the network node 105 and other devices may refer to communication between a device and any part (e.g., entity, sub-entity) of the network node 105. For example, the terms "send," "receive," or "communicate" when referring to the network node 105 may refer to any part of the network node 105 (e.g., base station 140, CU 160, DU 165, RU 170) of the RAN communicating with another device (e.g., directly or via one or more other network nodes 105).

[0069] In some examples, such as in a carrier aggregation configuration, a carrier may also have acquisition signaling or control signaling that coordinates the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute RF Channel Number (EARFCN)) and may be identified based on a channel raster for discovery by UE 115. A carrier may operate in a standalone mode, in which case initial acquisition and connection may be made by UE 115 via the carrier, or a carrier may operate in a non-standalone mode, in which case a different carrier (e.g., of the same or different radio access technology) is used to anchor the connection.

[0070] The communication link 125 shown in the wireless communication system 100 may include downlink transmissions (e.g., forward link transmissions) from the network node 105 to the UE 115, uplink transmissions (e.g., return link transmissions) from the UE 115 to the network node 105, or both, as well as other transmission configurations. A carrier may carry either downlink communications or uplink communications (e.g., in FDD mode), or may be configured to carry both downlink communications and uplink communications (e.g., in TDD mode).

[0071] A carrier may be associated with a particular bandwidth of the RF spectrum, and in some examples, the carrier bandwidth may be referred to as the "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a set of bandwidths of carriers of a particular radio access technology (e.g., 1.4 megahertz (MHz), 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz). A device of the wireless communication system 100 (e.g., a network node 105, a UE 115, or both) may have a hardware configuration that supports communications using a particular carrier bandwidth, or may be capable of being configured to support communications using one of the carrier bandwidths in the set of carrier bandwidths. In some examples, the wireless communication system 100 may include a network node 105 or a UE 115 that supports concurrent communications using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate using a portion (e.g., a subband, a BWP) or all of the carrier bandwidth.

[0072] The signal waveform transmitted via the carrier may include 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 using MCM techniques, a resource element may refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, in which case the symbol period and the subcarrier spacing may be 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), so that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high order modulation scheme may correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial resources may increase the data rate or data integrity used for communication with UE 115.

[0073] One or more parameter sets for a carrier may be supported, and the parameter sets may include subcarrier spacing (Δf) and cyclic prefixes. A carrier may be divided into one or more BWPs with the same or different parameter sets. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communications of a UE 115 may be constrained to one or more active BWPs.

[0074] The time interval for the network node 105 or the UE 115 may be expressed in multiples of a basic time unit, which may be, for example, a sampling period T s =1 / (Δf max ·N f ) seconds, where Δf max It can represent the supported subcarrier spacing, and N f The supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the 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).

[0075] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a certain number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a certain number of symbol periods (e.g., depending on the length of the cyclic prefix appended in front of each symbol period). In some wireless communication systems 100, the time slot may be further divided into a plurality of micro time slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0076] A subframe, a time slot, a mini-time slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0077] Physical channels may be multiplexed according to various techniques in order to communicate using a carrier. For example, physical control channels and physical data channels may be multiplexed using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique to signal via a downlink carrier. A control region (e.g., a control resource set (CORESET)) of a physical control channel may be defined by a set of symbol periods and may extend across a system bandwidth of a carrier or a subset of that system bandwidth. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more UEs in UE 115 may monitor or search a control region to obtain 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 of a control channel candidate may refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space sets may include a common search space set configured for transmitting control information to multiple UEs 115 , and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0078] The network node 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with the network node 105 (e.g., using a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other identifier) ​​used to distinguish adjacent cells. In some examples, a cell may also refer to a coverage area 110 or a portion of a coverage area 110 (e.g., a sector) on which a logical communication entity operates. Depending on various factors (such as the capabilities of the network node 105), such cells may range from a smaller area (e.g., a structure, a subset of a structure) to a larger area. For example, a cell may be or may include a building, a subset of a building, or an external space between or overlapping coverage areas 110, and the like.

[0079] A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access to UEs 115 that have service subscriptions with a network provider that supports the macro cell. A small cell may be associated with a lower power network node 105 (e.g., a lower power base station 140) (compared to a macro cell), and the small cell may operate using the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to a UE 115 that has a service subscription with a network provider, or may provide restricted access to a UE 115 associated with a small cell (e.g., a UE 115 in a closed subscriber group (CSG), a UE 115 associated with a user in a home or office). A network node 105 may support one or more cells, and may also use one or more component carriers to support communications via one or more cells.

[0080] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0081] In some examples, the network nodes 105 (e.g., base stations 140, RUs 170) may be mobile and thus provide communication coverage for mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network node 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network nodes 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network nodes 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0082] The wireless communication system 100 may support synchronous or asynchronous operation. For synchronous operation, the network nodes 105 (e.g., base stations 140) may have similar frame timing, and transmissions from different network nodes 105 may be approximately aligned in time. For asynchronous operation, the network nodes 105 may have different frame timing, and in some examples, transmissions from different network nodes 105 may not be aligned in time. The techniques described herein may be used for synchronous or asynchronous operation.

[0083] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may allow automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a network node 105 (e.g., base station 140) without human intervention. In some examples, M2M communication or MTC may include communication from devices with integrated sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents the information to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, health care monitoring, field survival monitoring, weather and geographic event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based commercial charging.

[0084] Some UEs 115 may be configured to employ an operating mode that reduces power consumption, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but does not transmit and receive concurrently). In some examples, half-duplex communication may be performed with a reduced peak rate. Other energy-saving techniques for UEs 115 include entering a power-saving deep sleep mode when not engaged in active communications, operating using limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a subcarrier or resource block (RB) set) within a carrier, within a guard band of a carrier, or outside a carrier.

[0085] 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). UE 115 may be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communication may include private communication or group communication, and may be supported by one or more services (such as push-to-talk, video, or data). Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.

[0086] In some examples, a UE 115 may be configured to support communication directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 in a group that are performing D2D communication may be within a coverage area 110 of a network node 105 (e.g., a base station 140, a RU 170), which may support aspects of such D2D communication configured (e.g., scheduled) by the network node 105. In some examples, one or more UEs 115 in such a group may be outside of the coverage area 110 of the network node 105, or may otherwise be unable or not configured to receive transmissions from the network node 105. In some examples, a group of UEs 115 communicating via D2D communication may support a one-to-many (1:M) system, in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, network node 105 may facilitate scheduling of resources for D2D communications. In some other examples, D2D communications may be performed between UEs 115 without involving network node 105.

[0087] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, the vehicles can communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these. The vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, vehicles in the V2X system can communicate with roadside infrastructure (such as roadside units) using vehicle-to-network (V2N) communications, or communicate with the network via one or more network nodes (e.g., network node 105, base station 140, RU 170), or both.

[0088] 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 evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnecting to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by a network node 105 (e.g., a base station 140) associated with the core network 130. User IP packets may be delivered through the user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the IP service 150 of one or more network operators. IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0089] The wireless communication system 100 may operate using one or more frequency bands that may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally speaking, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelength ranges from about one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features (which may be referred to as clusters), but these waves may be sufficient to penetrate structures so that macro cells provide services to UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) than communications using the lower frequencies and longer wavelengths of the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0090] The wireless communication system 100 may also operate using a super high frequency (SHF) region, which may be in the range of 3 GHz to 30 GHz (also known as a centimeter band), or an extremely high frequency (EHF) region of a spectrum (e.g., from 30 GHz to 300 GHz) (also known as a millimeter band). In some examples, the wireless communication system 100 may support millimeter wave (mmW) communications between a UE 115 and a network node 105 (e.g., a base station 140, a RU 170), and the EHF antenna of the corresponding device may be smaller and closer than the UHF antenna. In some examples, such technology may facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be affected by even greater attenuation and shorter range than SHF or UHF transmissions. The technology disclosed herein may be adopted across transmissions using one or more different frequency regions, and the use of frequency bands specified across these frequency regions may vary by country or regulatory agency.

[0091] The wireless communication system 100 may utilize licensed and unlicensed RF spectrum bands. For example, the wireless communication system 100 may use unlicensed bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band) to employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology. When operating using unlicensed RF spectrum bands, devices such as network nodes 105 and UEs 115 may employ carrier sensing for conflict detection and avoidance. In some examples, operations performed using unlicensed bands may be based on carrier aggregation configurations (e.g., LAA) in conjunction with component carriers operating using licensed bands. Operations performed using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, and the like.

[0092] A network node 105 (e.g., a base station 140, RU 170) or a UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the network node 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 co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with the network node 105 may be located at different geographic locations. The network node 105 may include an antenna array having a set of rows and columns of antenna ports that the network node 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals sent via the antenna ports.

[0093] The network node 105 or UE 115 may use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. Such a technology may be referred to as spatial multiplexing. The multiple signals may be sent, for example, by a transmitting device via different antennas or different combinations of antennas. Similarly, the multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO technologies include single-user MIMO (SU-MIMO), for which multiple spatial layers are sent to the same receiving device; and multi-user MIMO (MU-MIMO), for which multiple spatial layers are sent to multiple devices.

[0094] 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., a network node 105, a UE 115) to shape or direct an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining signals conveyed via antenna elements of an antenna array so that some signals propagating in a particular direction relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals conveyed via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of these antenna elements may be defined by a set of beamforming weights associated with a particular direction (e.g., relative to the antenna array of the transmitting device or the receiving device or relative to some other direction).

[0095] The network node 105 or UE 115 may use beam scanning techniques as part of a beamforming operation. For example, the network node 105 (e.g., base station 140, RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be sent multiple times by the network node 105 along different directions. For example, the network node 105 may send signals according to different sets of beamforming weights associated with different transmission directions. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device (such as the network node 105), or by a receiving device (such as the UE 115)) beam directions for later transmission or reception by the network node 105.

[0096] A transmitting device (e.g., transmitting network node 105, transmitting UE 115) may transmit some signals, such as data signals associated with a particular receiving device, along a single beam direction (e.g., a direction associated with a receiving device, such as receiving network node 105 or receiving UE 115). In some examples, a beam direction associated with transmission along a single beam direction may be determined based on signals transmitted along one or more beam directions. For example, UE 115 may receive one or more of the signals sent by network node 105 along different directions, and may report to network node 105 an indication of the signal received by UE 115 with the highest signal quality or other acceptable signal quality.

[0097] In some examples, transmission by a device (e.g., by a network node 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from the network node 105 to the UE 115). The UE 115 may report feedback indicating precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across a system bandwidth or one or more subbands. The network node 105 may send a reference signal (e.g., a cell-specific reference signal (CRS), a channel state information reference signal (CSI-RS)), which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel codebook, a linear combination codebook, a port selection codebook). Although these techniques are described with reference to signals sent along one or more directions by a network node 105 (e.g., base station 140, RU 170), UE 115 may use similar techniques to send signals multiple times along different directions (e.g., to identify a beam direction for subsequent transmission or reception by UE 115), or to send signals along a single direction (e.g., to send data to a receiving device).

[0098] A receiving device (e.g., UE 115) may perform receiving operations according to multiple receiving configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a receiving device (e.g., network node 105). For example, the receiving device may perform reception according to multiple receiving directions by: receiving via different antenna subarrays, processing the received signals according to different antenna subarrays, receiving according to different receiving beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or processing the received signals according to different receiving beamforming weight sets applied to signals received at 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 receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0099] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. The RLC layer may perform packet segmentation and reassembly to communicate via logical channels. The MAC layer may perform priority processing and multiplexing of logical channels into transport channels. The MAC layer may also implement error detection techniques, error correction techniques, or both to support retransmission to improve link efficiency. In the control plane, the RRC layer may provide the establishment, configuration, and maintenance of an RRC connection that supports a radio bearer for user plane data between a UE 115 and a network node 105 or a core network 130. The PHY layer may map a transport channel to a physical channel.

[0100] UE 115 and network node 105 may support retransmission of data to increase the possibility of data being successfully received. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the possibility of correctly receiving data via a communication link (e.g., communication link 125, D2D communication link 135). HARQ may include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC) and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve the throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, the device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific time slot for data received via a previous symbol in the time slot. In some other examples, the device may provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0101] The wireless communication system 100 may support beamforming signaling, such as signaling for use via mmW radio frequency spectrum bands. The UE 115 of the wireless communication system 100 may support analog beamforming on two polarizations. The analog beamforming may be based on a codebook, wherein the codebook is stored in a memory (e.g., a radio frequency integrated circuit memory) at the UE 115. Since the codebook is stored in the memory, the codebook used for analog beamforming may be relatively small, with few beamforming configurations. Codebook-based beamforming techniques may guide energy in a fixed direction or in a fixed direction of a beam space. Since the beam weights used for analog beamforming are stored in the memory, analog beamforming may be implemented with relatively low complexity, thereby improving latency and power density characterization. Some systems may support analog beamforming to use adaptive beam weights with more options for directional guidance, combining energy across multiple directions, the ability to compensate for impairments via a combination of phase shift and amplitude control, and the like. The technique of using adaptive beam weights for analog beamforming may still use two radio frequency chains (e.g., on two polarizations).

[0102] In some cases, the UE 115 may support the use of four radio frequency chains for higher rank MIMO usage. Some systems may frequently use four-layer MIMO signaling to improve beamforming performance. These techniques may also enable the use of hybrid beamforming in low-rank settings (e.g., two-layer MIMO signaling), which may provide enhanced performance and antenna diversity, but increase power and thermal overhead. Hybrid beamforming may support, for example, independent data streams using multiple radio frequency chains.

[0103] For two-layer downlink transmission from network node 105 to UE 115, network node 105 may have four antenna panels, but two active antenna panels are used. Half of the antenna power may be used for the first active antenna panel, and half of the antenna power may be used for the second active antenna panel. UE 115 may have two polarizations, such as horizontal polarization and vertical polarization. Channels may exist between the first panel of network node 105 to the first polarization (H1) of UE 115, from the first panel to the second polarization (G1), from the second panel to the first polarization (H2), and from the second panel to the second polarization (G2).

[0104] For four-layer transmission at UE 115, horizontal polarization and vertical polarization can each be segmented into two subarrays, where the first subarray and the second subarray correspond to horizontal polarization, and the third subarray and the fourth subarray correspond to vertical polarization. The network node 105 can use four panels, where the antenna panel power is evenly divided into quarters between the antenna panels. Similarly, there can be multiple channels between the antenna panels and the subarrays of the UE. For example, the first panel can have a channel to the first subarray (H1) and to the third subarray (G1), the second panel can have a channel to the second subarray (H1') and the fourth subarray (G1'), the third panel can have a channel to the first subarray (H2) and the third subarray (G2), and the fourth panel can have a channel to the second subarray (H2') and the fourth subarray (G2'). The signaling of the subarrays from the same antenna panel at UE 115 can be combined in the baseband. For example, the signaling of the first subarray and the second subarray can be combined at the baseband.

[0105] UE 115 may be configured to perform beam refinement according to a hierarchical beam refinement procedure. For example, UE 115 may perform a first beam refinement procedure to select a beam of a wider beam width, which may be referred to as a P1 beam refinement procedure. After selecting a wider beam width beam, UE 115 may perform a beam refinement procedure at a finer beam width granularity. For example, UE 115 may perform a P3 beam refinement procedure to select a narrow beam width beam. UE 115 may learn adaptive beam weights for emulating beamforming from the P1 beam refinement procedure or the P3 beam refinement procedure or both. Similarly, a UE 115 implementing hybrid beamforming may use P1-based hybrid beamforming or P3-based hybrid beamforming.

[0106] The wireless communication system 100 may support techniques for the UE 115 to switch between analog beamforming based on adaptive beam weights and hybrid beamforming. For example, the UE 115 may select a beamforming configuration based on channel conditions. In some cases, the UE 115 may use hybrid beamforming when configured for the P1 beam refinement procedure and use analog beamforming (e.g., analog beamforming based on adaptive beam weights) when configured for the P3 beam refinement procedure. For example, if the UE 115 determines beam weights for two or four layers of transmission based on wider beam width beams (e.g., based on beams from the P1 beam refinement procedure), using hybrid beamforming (e.g., combining energy from a signal on a four-layer transmission and then bringing the signal to baseband) may produce better beam weights. However, if the UE 115 determines beam weights based on a refined beam (e.g., based on a beam from a P3 beam refinement procedure), using analog beamforming may produce better beam weights. In some examples, UE 115 can select between hybrid beamforming and analog beamforming based on channel conditions. For example, adaptive beam weights may be better for channels with a signal-to-noise ratio (SNR) below a configured SNR threshold, and hybrid beamforming may be better for channels with an SNR above a configured SNR threshold. Thus, based on whether UE 115 uses a P1-based beam refinement scheme or a P3-based beam refinement scheme, UE 115 can select between using adaptive beam weights for two layers or hybrid beamforming for four layers.

[0107] In some examples, the network node 105 may configure the UE 115 with multiple reference signal resources associated with different beamforming techniques. For example, the network node 105 may configure the UE 115 with a first SRS resource associated with hybrid beamforming and a second SRS resource associated with analog beamforming. The UE 115 may send a first set of one or more SRSs on the first SRS resource using hybrid beamforming, and send a second set of one or more SRSs on the second SRS resource using analog beamforming. The network node 105 may measure the first set of SRSs and the second set of SRSs from the UE 115, and select hybrid beamforming or analog beamforming based on these measurements. The network node 105 may send control signaling to the UE 115 indicating a rank indicator associated with the selected beamforming technique. For example, if the network node 105 configures the UE 115 to switch from hybrid beamforming to analog beamforming, the network node 105 may indicate to the UE 115 the rank indicator associated with analog beamforming.

[0108] Figure 2 An example of a wireless communication system 200 that supports techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is illustrated. The wireless communication system 200 may include a UE 115-a and a network node 105-a, which may be as described in reference Figure 1 Corresponding examples of UE 115 and network node 105 are described.

[0109] The UE 115-a may support both hybrid beamforming and analog beamforming, such as analog beamforming based on adaptive beam weights. The UE 115-a may send a static or dynamic capability message 205 to the network node 105-a indicating support for both hybrid beamforming and analog beamforming.

[0110] The network node 105-a may send the SRS resource configuration 210 to the UE 115-a. The network node 105-a may configure two sets of SRS resources, wherein a first set of SRS resources are configured for hybrid beamforming and a second set of SRS resources are configured for analog beamforming.

[0111] UE 115-a may send hybrid beamforming SRS 215 on a first SRS resource configured for hybrid beamforming, and send analog beamforming SRS 220 on a second SRS resource configured for analog beamforming. For example, UE 115-a may send hybrid beamforming SRS 215 using hybrid beamforming technology, and UE 115-a may send analog beamforming SRS 220 using analog beamforming technology.

[0112] The network node 105-a may receive and measure the hybrid beamforming SRS 215 and the analog beamforming SRS 220. For example, the network node 105-a may measure the reference signal received power (RSRP) or the reference signal strength indicator (RSSI) of the SRS. In some cases, the network node 105-a may determine that the UE uses hybrid beamforming or analog beamforming based on these measurements. For example, the hybrid beamforming SRS 215 may have a stronger RSRP measurement than the analog beamforming SRS 220.

[0113] The network node 105-a may send a beamforming configuration 225 to the UE 115-a to indicate a beamforming scheme between hybrid beamforming and analog beamforming. For example, the network node 105-a may indicate a rank indicator associated with hybrid beamforming or a rank indicator associated with analog beamforming. In some cases, the UE 115-a may communicate according to hybrid beamforming, and the network node 105-a may send a control message including a rank indicator associated with analog beamforming. The UE 115-a may then switch to communicating according to analog beamforming based on receiving the control message.

[0114] In some cases, the UE 115-a may indicate a preference between hybrid beamforming and analog beamforming. For example, the UE 115-a may receive a beamforming configuration 225 indicating a rank indicator associated with the beamforming scheme. The UE 115-a may indicate a preferred selection between analog beamforming and hybrid beamforming to the network node 105-a. In some cases, the preference may be used in uplink signaling or downlink signaling or both.

[0115] In some cases, the network node 105-a may configure the UE 115-a with separate power control loops and rate control loops for hybrid beamforming and analog beamforming based on adaptive beam weights. For example, the network node 105-a may configure the UE 115-a with a first power control loop and a first rate control loop for hybrid beamforming and a second power control loop and a second rate control loop for analog beamforming.

[0116] In some examples, UE 115-a may determine a switch between hybrid beamforming and analog beamforming. For example, UE 115-a may determine whether to use adaptive beam weights with analog beamforming or hybrid beamforming. In some examples, UE 115-a may determine whether to use analog beamforming or hybrid beamforming based on an underlying beam refinement procedure according to which beam weights are constructed. For example, when beam refinement is based on a P1 (e.g., wider beamwidth) procedure, hybrid beamforming may correspond to a higher SNR for most channel conditions. When beam refinement is based on a P3 (e.g., narrower beamwidth) procedure, adaptive beam weights may be advantageous (e.g., having a higher SNR) for most channel conditions.

[0117] Additionally or alternatively, UE 115-a may select a beamforming scheme based on channel conditions. For example, adaptive beam weights may benefit from a large number of beams and measurements, such as for a P3-based procedure, because there may be more opportunities to estimate the phase across antenna elements. In some examples, when the channel has an SNR below a configured SNR threshold, UE 115-a may use adaptive beam weights to have more accurate beam weights. When the channel has an SNR exceeding a configured SNR threshold, UE 115-a may use hybrid beamforming to have more accurate beam weights.

[0118] In some cases, UE 115-a may select between hybrid beamforming and analog beamforming based on the power overhead and thermal overhead of UE 115-a. For example, hybrid beamforming may result in higher power overhead and thermal overhead because hybrid beamforming may use more layers than adaptive beam weights. Therefore, if UE 115-a has higher battery power or available power, or lower thermal overhead that does not require extensive thermal management solutions, UE 115-a may be more likely to use hybrid beamforming. If UE 115-a has battery power or available power overhead and / or thermal overhead below a threshold, UE 115-a may use analog beamforming.

[0119] For example, UE 115-a may determine a switch from hybrid beamforming to analog beamforming. In some cases, conditions at UE 115-a or in wireless communication system 200 may correspond to better results or quality using analog beamforming. For example, UE 115-a may be configured for a P3 beam refinement procedure. UE 115-a may send a control message indicating a rank indicator associated with a switch determination based on analog beamforming. UE 115-a and network node 105-a may communicate according to analog beamforming based on the control message indicating the rank indicator associated with analog beamforming.

[0120] Figure 3 An example of a process flow 300 for supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is illustrated. The process flow 300 may be implemented by a UE 115-b or a network node 105-b or both, which may be as described in reference to Figure 1 and Figure 2 The corresponding examples of UE 115 and network node 105 are described.

[0121] At 305, the UE 115-b may send a capability message to the network node 105-b. The capability message may be sent semi-persistently or dynamically. For example, the UE 115-b may send and the network node 105-b may receive a first control message indicating that the UE 115-b supports hybrid beamforming and analog beamforming based on adaptive beam weights.

[0122] At 310, the network node 105-b may send a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the adaptive beam weight-based analog beamforming. In some examples, the first set of reference signal resources may be a first set of SRS resources, and the second set of reference signal resources may be a second set of SRS resources.

[0123] At 315, the network node 105-b may receive a first set of reference signals from the UE 115-b via a first set of reference signal resources, the first set of reference signals corresponding to hybrid beamforming. At 320, the network node 105-b may receive a second set of reference signals from the UE 115-b via a second set of reference signal resources, the second set of reference signals corresponding to analog beamforming based on adaptive beam weights. For example, the UE 115-b may send the first set of reference signals in accordance with hybrid beamforming, and the UE 115-b may send the second set of reference signals in accordance with analog beamforming based on adaptive beam weights (e.g., analog beamforming).

[0124] At 325, the network node 105-b may send a third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming in response to the first set of reference signals and the second set of reference signals. For example, the network node 105-b may configure the UE 115-b to communicate using hybrid beamforming or the adaptive beam weight-based analog beamforming based on measuring the first set of reference signals and the second set of reference signals.

[0125] In some cases, the network node 105-b may send a third control message indicating a rank indicator associated with the hybrid beamforming based on receiving the first set of reference signals and the second set of reference signals. In some cases, the third control message may indicate one or more parameters for a power control loop or a rate control loop associated with the hybrid beamforming. The network node 105-b may receive an uplink data message in accordance with the hybrid beamforming or send a downlink data message in accordance with the hybrid beamforming based on the third control message.

[0126] In some cases, the network node 105-b may send a third control message indicating a rank indicator associated with analog beamforming based on adaptive beam weights based on receiving the first set of reference signals and the second set of reference signals. In some cases, the third control message may indicate one or more parameters for a power control loop or a rate control loop associated with analog beamforming based on adaptive beam weights. The network node 105-b may receive an uplink data message according to analog beamforming based on adaptive beam weights or send a downlink data message according to analog beamforming based on adaptive beam weights based on the third control message.

[0127] Figure 4 An example of a process flow 400 supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is illustrated. The process flow 400 may be implemented by a UE 115-c or a network node 105-c, or both, which may be respective examples of a UE 115 and a network node 105 as described herein.

[0128] At 405, the UE 115-c may communicate according to a first beamforming configuration (eg, with the network node 105-c). The first beamforming configuration may be a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights.

[0129] At 410, the UE 115-c may determine to switch from the first beamforming configuration to the second beamforming configuration. For example, the UE 115-c may detect a condition in which the second beamforming configuration corresponds to improved beamforming efficiency or quality.

[0130] At 415, the UE 115-c may send a control message indicating a rank indicator associated with the second beamforming configuration based on switching to the second beamforming configuration. For example, the UE 115-c may switch to the second beamforming configuration based on the granularity of beam refinement used to communicate according to the first beamforming configuration. For example, the UE 115-c may be configured for a P1 beam refinement procedure and communicate using analog beamforming based on adaptive beam weights. However, when configured for a low granularity (e.g., P1) beam refinement procedure, the UE 115-c may determine that hybrid beamforming may be more efficient. Therefore, the UE 115-c may indicate a switch from analog beamforming to hybrid beamforming by indicating a rank indicator associated with the hybrid beamforming.

[0131] In some examples, when communicating according to the first beamforming configuration, the UE 115-c may switch to the second beamforming configuration based on channel conditions. For example, the channel conditions when communicating according to the first beamforming configuration may have a high SNR. The UE 115-c may determine that hybrid beamforming is more efficient in the case of a high SNR, and the UE 115-c may indicate a switch from analog beamforming to hybrid beamforming. Additionally or alternatively, the UE 115-c may switch to the second beamforming configuration based on a transmit power overhead or thermal overhead, or both, of the UE 115-c. For example, the UE 115-c may determine that the UE 115-c has sufficient power headroom or thermal headroom, or both, to communicate according to hybrid beamforming.

[0132] At 420 , the UE 115 - c may communicate in accordance with the second beamforming configuration (eg, with the network node 105 - c ) based on sending a control message indicating a rank indicator associated with the second beamforming configuration.

[0133] Figure 5 A block diagram 500 of a device 505 supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is shown. The device 505 may be an example of aspects of the network node 105 as described herein. The device 505 may include a receiver 510, a transmitter 515, and a communication manager 520. The device 505 may also include one or more processors, a memory coupled to the one or more processors, and instructions stored in the memory that are executable by the one or more processors to enable the one or more processors to perform the switching between analog beamforming and hybrid beamforming based on adaptive beam weights discussed herein. Each of these components may communicate with each other (e.g., via one or more buses).

[0134] Receiver 510 may provide means for obtaining (e.g., receiving, determining, identifying) information (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) such as user data, control information, or any combination thereof. The information may be passed to other components of device 505. In some examples, receiver 510 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, receiver 510 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0135] The transmitter 515 may provide means for outputting (e.g., sending, providing, conveying, transmitting) information generated by other components of the device 505. For example, the transmitter 515 may output information (such as user data, control information, or any combination thereof) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, the transmitter 515 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 515 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 515 and the receiver 510 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0136] The communication manager 520, the receiver 510, the transmitter 515, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of the techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights as described herein. For example, the communication manager 520, the receiver 510, the transmitter 515, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0137] In some examples, the communication manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may include a processor, a DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic components, discrete hardware components, or any combination thereof that is configured as or otherwise supports components for performing the functions described in the present disclosure. In some examples, a processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0138] Additionally or alternatively, in some examples, the communication manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functionality described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0139] In some examples, communication manager 520 may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 510, transmitter 515, or both. For example, communication manager 520 may receive information from receiver 510, transmit information to transmitter 515, or be integrated in conjunction with receiver 510, transmitter 515, or both to obtain information, output information, or perform various other operations as described herein.

[0140] According to examples as disclosed herein, the communication manager 520 may support wireless communications at a network node. For example, the communication manager 520 may be configured to or otherwise support a component for receiving a first control message indicating that the UE supports a static or dynamic capability of hybrid beamforming and analog beamforming based on adaptive beam weights. The communication manager 520 may be configured to or otherwise support a component for sending a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights. The communication manager 520 may be configured to or otherwise support a component for receiving a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming, and the second set of reference signals corresponding to the analog beamforming based on adaptive beam weights. The communications manager 520 may be configured or otherwise support means for sending a third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming in response to the first set of reference signals and the second set of reference signals.

[0141] By including or configuring the communication manager 520 according to the examples as described herein, the device 505 (e.g., a processor controlling or otherwise coupling the receiver 510, the transmitter 515, the communication manager 520, or a combination thereof) can support techniques for reducing processing and power consumption by communicating according to a beamforming scheme. For example, these techniques can improve antenna diversity by switching from analog beamforming to hybrid beamforming, or reduce complexity by switching from hybrid beamforming to analog beamforming.

[0142] Figure 6 A block diagram 600 of a device 605 supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is shown. The device 605 may be an example of aspects of the device 505 or network node 105 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communication manager 620. The device 605 may also include one or more processors, a memory coupled to the one or more processors, and instructions stored in the memory that are executable by the one or more processors to enable the one or more processors to perform the switching between analog beamforming and hybrid beamforming based on adaptive beam weights discussed herein. Each of these components may communicate with each other (e.g., via one or more buses).

[0143] Receiver 610 may provide means for obtaining (e.g., receiving, determining, identifying) information (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) such as user data, control information, or any combination thereof. The information may be passed to other components of device 605. In some examples, receiver 610 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, receiver 610 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0144] The transmitter 615 may provide means for outputting (e.g., sending, providing, conveying, transmitting) information generated by other components of the device 605. For example, the transmitter 615 may output information (such as user data, control information, or any combination thereof) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, the transmitter 615 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 615 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 615 and the receiver 610 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0145] The device 605 or its various components may be examples of components for performing various aspects of the technology for switching between analog beamforming and hybrid beamforming based on adaptive beam weights as described herein. For example, the communication manager 620 may include a beamforming capability component 625, an SRS configuration component 630, an SRS reception component 635, a beamforming configuration component 640, or any combination thereof. The communication manager 620 may be an example of various aspects of the communication manager 520 as described herein. In some examples, the communication manager 620 or its various components may be configured to use or otherwise cooperate with the receiver 610, the transmitter 615, or both to perform various operations (e.g., receive, obtain, monitor, output, send). For example, the communication manager 620 may receive information from the receiver 610, transmit information to the transmitter 615, or be integrated with the receiver 610, the transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.

[0146] According to examples as disclosed herein, the communication manager 620 may support wireless communications at a network node. The beamforming capability component 625 may be configured to or otherwise support a component for receiving a first control message indicating a static or dynamic capability of the UE to support hybrid beamforming and analog beamforming based on adaptive beam weights. The SRS configuration component 630 may be configured to or otherwise support a component for sending a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights. The SRS reception component 635 may be configured to or otherwise support a component for receiving a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming, and the second set of reference signals corresponding to the analog beamforming based on adaptive beam weights. The beamforming configuration component 640 may be configured or otherwise support means for sending a third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming in response to the first set of reference signals and the second set of reference signals.

[0147] In some cases, the beamforming capability component 625, the SRS configuration component 630, the SRS reception component 635, and the beamforming configuration component 640 may each be a processor (e.g., a transceiver processor, or a radio processor, or a transmitter processor, or a receiver processor) or at least a portion thereof. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the features of the beamforming capability component 625, the SRS configuration component 630, the SRS reception component 635, and the beamforming configuration component 640 discussed herein. The transceiver processor may be co-located and / or communicate with (e.g., direct the operation of) a transceiver of a device. The radio processor may be co-located and / or communicate with (e.g., direct the operation of) a radio (e.g., an NR radio, an LTE radio, a Wi-Fi radio) of a device. The transmitter processor may be co-located and / or communicate with (e.g., direct the operation of) a transmitter of a device. The receiver processor may be co-located and / or communicate with (e.g., direct the operation of) a receiver of a device.

[0148] Figure 7A block diagram 700 of a communication manager 720 supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights is shown in accordance with one or more aspects of the present disclosure. The communication manager 720 may be an example of aspects of the communication manager 520, the communication manager 620, or both as described herein. The communication manager 720 or its various components may be examples of components for performing various aspects of the techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights as described herein. For example, the communication manager 720 may include a beamforming capability component 725, an SRS configuration component 730, an SRS reception component 735, a beamforming configuration component 740, a beamforming preference component 745, a beamforming communication component 750, or any combination thereof. Each of these components may communicate with each other directly or indirectly (e.g., via one or more buses), which may include communication within a protocol layer of a protocol stack, communication associated with a logical channel of the protocol stack (e.g., between protocol layers of the protocol stack, within a device, component, or virtualized component associated with the network node 105, between devices, components, or virtualized components associated with the network node 105), or any combination thereof.

[0149] According to examples as disclosed herein, the communication manager 720 may support wireless communications at a network node. The beamforming capability component 725 may be configured to or otherwise support a component for receiving a first control message indicating a static or dynamic capability of the UE to support hybrid beamforming and analog beamforming based on adaptive beam weights. The SRS configuration component 730 may be configured to or otherwise support a component for sending a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights. The SRS reception component 735 may be configured to or otherwise support a component for receiving a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming, and the second set of reference signals corresponding to the analog beamforming based on adaptive beam weights. The beamforming configuration component 740 may be configured to or otherwise support means for sending a third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming in response to the first set of reference signals and the second set of reference signals.

[0150] In some examples, the beamforming preference component 745 may be configured or otherwise support means for receiving a message indicating a preference between the hybrid beamforming and the adaptive beam weight-based analog beamforming in response to the rank indicator.

[0151] In some examples, to support sending a third control message, the beamforming configuration component 740 may be configured as or otherwise support components for sending the third control message indicating the rank indicator associated with the hybrid beamforming based on the first set of received reference signals and the second set of reference signals.

[0152] In some examples, to support sending a third control message, beamforming configuration component 740 may be configured as or otherwise support components for sending a third control message indicating one or more parameters for a power control loop or a rate control loop associated with hybrid beamforming.

[0153] In some examples, beamforming communication component 750 can be configured or otherwise support components for receiving uplink data messages in accordance with hybrid beamforming. In some examples, beamforming communication component 750 can be configured or otherwise support components for sending downlink data messages in accordance with hybrid beamforming.

[0154] In some examples, to support sending a third control message, the beamforming configuration component 740 may be configured as or otherwise support components for sending the third control message indicating the rank indicator associated with the adaptive beam weight-based analog beamforming based on the first set of received reference signals and the second set of reference signals.

[0155] In some examples, to support sending a third control message, beamforming configuration component 740 may be configured as or otherwise support components for sending a third control message indicating one or more parameters for a power control loop or a rate control loop associated with analog beamforming based on adaptive beam weights.

[0156] In some examples, beamforming communication component 750 can be configured or otherwise support components for receiving uplink data messages according to analog beamforming based on adaptive beam weights. In some examples, beamforming communication component 750 can be configured or otherwise support components for sending downlink data messages according to analog beamforming based on adaptive beam weights.

[0157] In some examples, to support sending a second control message, the SRS configuration component 730 may be configured as or otherwise support components for sending a second control message indicating a first set of SRS resources and a second set of SRS resources, wherein the first set of reference signals is a first set of SRSs and the second set of reference signals is a second set of SRSs.

[0158] In some cases, the beamforming capability component 725, the SRS configuration component 730, the SRS reception component 735, the beamforming configuration component 740, the beamforming preference component 745, and the beamforming communication component 750 may each be a processor (e.g., a transceiver processor, or a radio processor, or a transmitter processor, or a receiver processor) or at least a portion thereof. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate the features of the beamforming capability component 725, the SRS configuration component 730, the SRS reception component 735, the beamforming configuration component 740, the beamforming preference component 745, and the beamforming communication component 750 as discussed herein.

[0159] Figure 8 A diagram of a system 800 including a device 805 supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is shown. The device 805 may be an example of a device 505, a device 605, or a network node 105 as described herein or include components thereof. The device 805 may communicate with one or more network nodes 105, one or more UEs 115, or any combination thereof, which may include communication through one or more wired interfaces, through one or more wireless interfaces, or any combination thereof. The device 805 may include components that support output and acquisition of communications, such as a communication manager 820, a transceiver 810, an antenna 815, a memory 825, a code 830, and a processor 835. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 840).

[0160] The transceiver 810 may support bidirectional communication via a wired link, a wireless link, or both as described herein. In some examples, the transceiver 810 may include a wired transceiver and may communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 810 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 805 may include one or more antennas 815, which may be capable of sending or receiving wireless transmissions (e.g., concurrently). The transceiver 810 may also include a modem for: modulating a signal; providing the modulated signal for transmission (e.g., via one or more antennas 815, via a wired transmitter); receiving the modulated signal (e.g., from one or more antennas 815, from a wired receiver); and demodulating the signal. In some implementations, the transceiver 810 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 815 configured to support various receiving or obtaining operations, or one or more interfaces coupled to one or more antennas 815 configured to support various sending or outputting operations, or a combination thereof. In some implementations, the transceiver 810 may include or be configured to be coupled to one or more processors or memory components, which are operable to perform or support operations based on received or obtained information or signals, or to generate information or other signals for transmission or other output, or any combination thereof. In some implementations, the transceiver 810, or the transceiver 810 and one or more antennas 815, or the transceiver 810 and one or more antennas 815 and one or more processors or memory components (e.g., processor 835 or memory 825 or both) may be included in a chip or chip assembly installed in the device 805. In some examples, the transceiver may be operable to support communications via one or more communication links (eg, communication link 125, backhaul communication link 120, midhaul communication link 162, fronthaul communication link 168).

[0161] The memory 825 may include RAM and ROM. The memory 825 may store computer-readable, computer-executable code 830 including instructions that, when executed by the processor 835, cause the device 805 to perform various functions described herein. The code 830 may be stored in a non-transitory computer-readable medium such as a system memory or another type of memory. In some cases, the code 830 may not be directly executable by the processor 835, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 825 may also include a BIOS, which may control basic hardware or software operations, such as interaction with peripheral components or devices, among other things.

[0162] The processor 835 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA, a microcontroller, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 835 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 835. The processor 835 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 825) to enable the device 805 to perform various functions (e.g., functions or tasks that support techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights). For example, the device 805 or a component of the device 805 may include a processor 835 and a memory 825 coupled to the processor 835, the processor 835 and the memory 825 being configured to perform various functions described herein. The processor 835 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, a virtual machine, or a container instance), which may host functions for performing functions of the device 805 (e.g., by executing code 830). The processor 835 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 805 (such as in the memory 825). In some specific implementations, the processor 835 may be a component of a processing system. A processing system may generally refer to a system or a series of machines or components that receive inputs and process these inputs to produce an output set (which may be passed to, for example, other systems or components of the device 805). For example, the processing system of the device 805 may refer to a system including various other components or subcomponents of the device 805 (such as the processor 835, or the transceiver 810, or the communication manager 820, or other components or combinations of components of the device 805). The processing system of the device 805 may be docked with other components of the device 805, and may process information (such as input or signals) received from other components or output information to other components. For example, a chip or modem of the device 805 may include a processing system and one or more interfaces for outputting information or for obtaining information or both. One or more interfaces may be implemented as or otherwise include a first interface configured to output information and a second interface configured to obtain information or the same interface configured to output information and obtain information, as well as other specific implementations. In some specific implementations, one or more interfaces may refer to an interface between a processing system of a chip or modem and a transmitter, so that the device 805 can send information output from the chip or modem. Additionally or alternatively, in some specific implementations, one or more interfaces may refer to an interface between a processing system of a chip or modem and a receiver, so that the device 805 can obtain information or signal input, and the information can be passed to the processing system.One of ordinary skill in the art will readily recognize that the first interface may also obtain information or signal input, and the second interface may also output information or signal output.

[0163] In some examples, bus 840 may support communications of protocol layers (e.g., within protocol layers) of a protocol stack. In some examples, bus 840 may support communications associated with logical channels of a protocol stack (e.g., between protocol layers of a protocol stack), which may include communications performed within components of device 805, or communications performed between different components of device 805 that may be co-located or may be located in different locations (e.g., where device 805 may refer to a system in which one or more of communication manager 820, transceiver 810, memory 825, code 830, and processor 835 may be located in one of the different components or divided between the different components).

[0164] In some examples, the communication manager 820 may manage aspects of communications with the core network 130 (e.g., via one or more wired or wireless backhaul links). For example, the communication manager 820 may manage the delivery of data communications for client devices such as one or more UEs 115. In some examples, the communication manager 820 may manage communications with other network nodes 105 and may include a controller or scheduler for controlling communications with the UE 115 in coordination with the other network nodes 105. In some examples, the communication manager 820 may support an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between network nodes 105.

[0165] According to examples as disclosed herein, the communication manager 820 may support wireless communications at a network node. For example, the communication manager 820 may be configured to or otherwise support a component for receiving a first control message indicating that the UE supports a static or dynamic capability of hybrid beamforming and analog beamforming based on adaptive beam weights. The communication manager 820 may be configured to or otherwise support a component for sending a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights. The communication manager 820 may be configured to or otherwise support a component for receiving a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming, and the second set of reference signals corresponding to the analog beamforming based on adaptive beam weights. The communications manager 820 may be configured or otherwise support means for sending a third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming in response to the first set of reference signals and the second set of reference signals.

[0166] By including or configuring a communication manager 820 according to examples as described herein, the device 805 can support techniques for reducing processing and power consumption by communicating according to a beamforming scheme. For example, these techniques can improve antenna diversity by switching from analog beamforming to hybrid beamforming, or reduce complexity by switching from hybrid beamforming to analog beamforming.

[0167] In some examples, the communication manager 820 may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the transceiver 810, one or more antennas 815 (e.g., where applicable), or any combination thereof. Although the communication manager 820 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 820 may be supported or performed by the transceiver 810, the processor 835, the memory 825, the code 830, or any combination thereof. For example, the code 830 may include instructions executable by the processor 835 to cause the device 805 to perform various aspects of the techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights as described herein, or the processor 835 and the memory 825 may be otherwise configured to perform or support such operations.

[0168] Fig. 9A block diagram 900 of a device 905 supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is shown. The device 905 may be an example of aspects of a UE 115 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communication manager 920. The device 905 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0169] The receiver 910 may provide means for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels related to techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights, data channels, information channels). The information may be communicated to other components of the device 905. The receiver 910 may utilize a single antenna or a collection of multiple antennas.

[0170] The transmitter 915 may provide means for transmitting signals generated by other components of the device 905. For example, the transmitter 915 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels related to techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights, data channels, information channels). In some examples, the transmitter 915 may be co-located with the receiver 910 in a transceiver module. The transmitter 915 may utilize a single antenna or a collection of multiple antennas.

[0171] The communication manager 920, the receiver 910, the transmitter 915, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of the techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights as described herein. For example, the communication manager 920, the receiver 910, the transmitter 915, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0172] In some examples, the communication manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may include a processor, a digital signal processor (DSP), a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic components, discrete hardware components, or any combination thereof that is configured to or otherwise supports components for performing the functions described in the present disclosure. In some examples, the processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0173] Additionally or alternatively, in some examples, the communication manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functions described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0174] In some examples, the communication manager 920 may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the receiver 910, the transmitter 915, or both. For example, the communication manager 920 may receive information from the receiver 910, transmit information to the transmitter 915, or be integrated in conjunction with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.

[0175] According to the examples disclosed herein, the communication manager 920 may support wireless communication at the UE. For example, the communication manager 920 may be configured to or otherwise support a component for sending a first control message indicating that the UE supports a static or dynamic capability of hybrid beamforming and analog beamforming based on adaptive beam weights. The communication manager 920 may be configured to or otherwise support a component for receiving a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights. The communication manager 920 may be configured to or otherwise support a component for sending a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, the first set of reference signals being sent according to the hybrid beamforming, and the second set of reference signals being sent according to the analog beamforming based on adaptive beam weights. The communications manager 920 may be configured or otherwise support means for receiving a third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming in response to the first set of reference signals and the second set of reference signals.

[0176] Additionally or alternatively, according to examples as disclosed herein, the communication manager 920 may support wireless communications at the UE. For example, the communication manager 920 may be configured to or otherwise support components for communicating according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights. The communication manager 920 may be configured to or otherwise support components for sending a control message indicating a rank indicator associated with the second beamforming configuration based on switching to the second beamforming configuration. The communication manager 920 may be configured to or otherwise support components for communicating according to the second beamforming configuration based on sending the control message indicating the rank indicator associated with the second beamforming configuration.

[0177] By including or configuring the communication manager 920 according to the examples as described herein, the device 905 (e.g., a processor controlling or otherwise coupling the receiver 910, the transmitter 915, the communication manager 920, or a combination thereof) can support techniques for reducing processing and power consumption by communicating according to a beamforming scheme. For example, these techniques can improve antenna diversity by switching from analog beamforming to hybrid beamforming, or reduce complexity by switching from hybrid beamforming to analog beamforming.

[0178] Fig.10A block diagram 1000 of a device 1005 supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is shown. The device 1005 may be an example of aspects of the device 905 or UE 115 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communication manager 1020. The device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0179] The receiver 1010 may provide means for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels related to techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights, data channels, information channels). The information may be communicated to other components of the device 1005. The receiver 1010 may utilize a single antenna or a collection of multiple antennas.

[0180] The transmitter 1015 may provide means for transmitting signals generated by other components of the device 1005. For example, the transmitter 1015 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels related to techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights, data channels, information channels). In some examples, the transmitter 1015 may be co-located with the receiver 1010 in a transceiver module. The transmitter 1015 may utilize a single antenna or a collection of multiple antennas.

[0181] The device 1005 or its various components may be examples of components for performing various aspects of the techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights as described herein. For example, the communication manager 1020 may include a beamforming capability component 1025, an SRS configuration component 1030, an SRS transmission component 1035, a beamforming configuration component 1040, a beamforming communication component 1045, a beamforming switching component 1050, or any combination thereof. The communication manager 1020 may be an example of various aspects of the communication manager 920 as described herein. In some examples, the communication manager 1020 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the receiver 1010, the transmitter 1015, or both. For example, the communications manager 1020 may receive information from the receiver 1010, transmit information to the transmitter 1015, or integrate with the receiver 1010, the transmitter 1015, or both to obtain information, output information, or perform various other operations as described herein.

[0182] According to examples as disclosed herein, the communication manager 1020 may support wireless communications at a UE. The beamforming capability component 1025 may be configured to or otherwise support a component for sending a first control message indicating that the UE supports a static or dynamic capability of hybrid beamforming and analog beamforming based on adaptive beam weights. The SRS configuration component 1030 may be configured to or otherwise support a component for receiving a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights. The SRS transmission component 1035 may be configured to or otherwise support a component for transmitting a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, the first set of reference signals being transmitted according to the hybrid beamforming, and the second set of reference signals being transmitted according to the analog beamforming based on adaptive beam weights. The beamforming configuration component 1040 may be configured or otherwise support means for receiving a third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming in response to the first set of reference signals and the second set of reference signals.

[0183] Additionally or alternatively, according to examples as disclosed herein, the communication manager 1020 may support wireless communications at the UE. The beamforming communication component 1045 may be configured to or otherwise support components for communicating according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights. The beamforming switching component 1050 may be configured to or otherwise support components for sending a control message indicating a rank indicator associated with the second beamforming configuration based on switching to the second beamforming configuration. The beamforming communication component 1045 may be configured to or otherwise support components for communicating according to the second beamforming configuration based on sending the control message indicating the rank indicator associated with the second beamforming configuration.

[0184] In some cases, the beamforming capability component 1025, the SRS configuration component 1030, the SRS transmission component 1035, the beamforming configuration component 1040, the beamforming communication component 1045, and the beamforming switching component 1050 may each be a processor (e.g., a transceiver processor, or a radio processor, or a transmitter processor, or a receiver processor) or at least a portion thereof. The processor may be coupled to a memory and execute instructions stored in the memory, which enable the processor to perform or facilitate the features of the beamforming capability component 1025, the SRS configuration component 1030, the SRS transmission component 1035, the beamforming configuration component 1040, the beamforming communication component 1045, and the beamforming switching component 1050 as discussed herein. The transceiver processor may be co-located with and / or communicate with (e.g., direct the operation of) a transceiver of the device. The radio processor may be co-located with and / or communicate with (e.g., direct the operation of) a radio (e.g., an NR radio, an LTE radio, a Wi-Fi radio) of the device. A transmitter processor may be co-located with and / or in communication with (eg, directing the operation of) a transmitter of a device. A receiver processor may be co-located with and / or in communication with (eg, directing the operation of) a receiver of a device.

[0185] Fig.11 A block diagram 1100 of a communication manager 1120 supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is shown. The communication manager 1120 may be an example of aspects of the communication manager 920, the communication manager 1020, or both as described herein. The communication manager 1120 or its various components may be examples of components for performing various aspects of the techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights as described herein. For example, the communication manager 1120 may include a beamforming capability component 1125, an SRS configuration component 1130, an SRS transmission component 1135, a beamforming configuration component 1140, a beamforming communication component 1145, a beamforming switching component 1150, a beamforming preference component 1155, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0186] According to examples as disclosed herein, the communication manager 1120 may support wireless communications at a UE. The beamforming capability component 1125 may be configured to or otherwise support a component for sending a first control message indicating that the UE supports a static or dynamic capability of hybrid beamforming and analog beamforming based on adaptive beam weights. The SRS configuration component 1130 may be configured to or otherwise support a component for receiving a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights. The SRS transmission component 1135 may be configured to or otherwise support a component for transmitting a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, the first set of reference signals being transmitted according to the hybrid beamforming, and the second set of reference signals being transmitted according to the analog beamforming based on adaptive beam weights. The beamforming configuration component 1140 may be configured as or otherwise support means for receiving a third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming in response to the first set of reference signals and the second set of reference signals.

[0187] In some examples, the beamforming preference component 1155 may be configured or otherwise support means for sending a message indicating a preference between the hybrid beamforming and the adaptive beam weight-based analog beamforming in response to the rank indicator.

[0188] In some examples, to support receiving a third control message, the beamforming configuration component 1140 may be configured as or otherwise support components for receiving the third control message indicating the rank indicator associated with the hybrid beamforming based on the first set of transmitted reference signals and the second set of reference signals.

[0189] In some examples, to support receiving a third control message, beamforming configuration component 1140 may be configured or otherwise support means for receiving a third control message indicating one or more parameters for a power control loop or a rate control loop associated with hybrid beamforming.

[0190] In some examples, beamforming communication component 1145 can be configured or otherwise support components for sending uplink data messages in accordance with hybrid beamforming. In some examples, beamforming communication component 1145 can be configured or otherwise support components for receiving downlink data messages in accordance with hybrid beamforming.

[0191] In some examples, to support receiving a third control message, the beamforming configuration component 1140 may be configured as or otherwise support components for receiving the third control message indicating the rank indicator associated with the adaptive beam weight-based analog beamforming based on the first set of transmitted reference signals and the second set of reference signals.

[0192] In some examples, to support receiving a third control message, beamforming configuration component 1140 may be configured as or otherwise support components for receiving a third control message indicating one or more parameters for a power control loop or a rate control loop associated with analog beamforming based on adaptive beam weights.

[0193] In some examples, beamforming communication component 1145 can be configured or otherwise support components for sending uplink data messages according to analog beamforming based on adaptive beam weights. In some examples, beamforming communication component 1145 can be configured or otherwise support components for receiving downlink data messages according to analog beamforming based on adaptive beam weights.

[0194] In some examples, to support receiving a second control message, the SRS configuration component 1130 may be configured as or otherwise support components for receiving a second control message indicating a first set of SRS resources and a second set of SRS resources, wherein the first set of reference signals is a first set of SRSs and the second set of reference signals is a second set of SRSs.

[0195] Additionally or alternatively, according to examples as disclosed herein, the communication manager 1120 may support wireless communications at the UE. The beamforming communication component 1145 may be configured to or otherwise support components for communicating according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights. The beamforming switching component 1150 may be configured to or otherwise support components for sending a control message indicating a rank indicator associated with the second beamforming configuration based on switching to the second beamforming configuration. In some examples, the beamforming communication component 1145 may be configured to or otherwise support components for communicating according to the second beamforming configuration based on sending the control message indicating the rank indicator associated with the second beamforming configuration.

[0196] In some examples, beamforming switching component 1150 can be configured or otherwise support means for switching to a second beamforming configuration based on a granularity of beam refinement for communicating according to a first beamforming configuration.

[0197] In some examples, the control message indicates a rank indicator associated with the hybrid beamforming configuration based on using a low granularity beam refinement procedure (e.g., a P1 procedure, while a P3 procedure may be considered a relatively high granularity beam refinement procedure). In some examples, switching to the second beamforming configuration includes switching from an analog beamforming configuration based on adaptive beam weights to a hybrid beamforming configuration.

[0198] In some examples, the control message indicates a rank indicator associated with an analog beamforming configuration based on adaptive beam weights based on using a fine granularity beam refinement procedure. In some examples, switching to a second beamforming configuration includes switching from a hybrid beamforming configuration to an analog beamforming configuration based on adaptive beam weights.

[0199] In some examples, beamforming switching component 1150 may be configured or otherwise support components for switching to a second beamforming configuration based on channel conditions while communicating according to a first beamforming configuration.

[0200] In some examples, beamforming switching component 1150 can be configured or otherwise support components for switching to a second beamforming configuration based on transmit power overhead or thermal overhead, or both.

[0201] In some cases, the beamforming capability component 1125, the SRS configuration component 1130, the SRS transmission component 1135, the beamforming configuration component 1140, the beamforming communication component 1145, the beamforming switching component 1150, and the beamforming preference component 1155 may each be a processor (e.g., a transceiver processor, or a radio processor, or a transmitter processor, or a receiver processor) or at least a portion thereof. The processor may be coupled to a memory and execute instructions stored in the memory that enable the processor to perform or facilitate features of the beamforming capability component 1125, the SRS configuration component 1130, the SRS transmission component 1135, the beamforming configuration component 1140, the beamforming communication component 1145, the beamforming switching component 1150, and the beamforming preference component 1155 as discussed herein.

[0202] Fig.12A diagram of a system 1200 including a device 1205 supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is shown. The device 1205 may be an example of a device 905, a device 1005, or a UE 115 as described herein, or include components thereof. The device 1205 may communicate (e.g., wirelessly) with one or more network nodes 105, one or more UEs 115, or any combination thereof. The device 1205 may include components for two-way voice and data communications, including components for sending and receiving communications, such as a communication manager 1220, an input / output (I / O) controller 1210, a transceiver 1215, an antenna 1225, a memory 1230, a code 1235, and a processor 1240. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1245).

[0203] I / O controller 1210 can manage input signals and output signals of device 1205. I / O controller 1210 can also manage peripheral devices that are not integrated into device 1205. In some cases, I / O controller 1210 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1210 can utilize an operating system, such as or another known operating system. Additionally or alternatively, I / O controller 1210 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1210 may be implemented as part of a processor, such as processor 1240. In some cases, a user may interact with device 1205 via I / O controller 1210 or via hardware components controlled by I / O controller 1210.

[0204] In some cases, the device 1205 may include a single antenna 1225. However, in some other cases, the device 1205 may have more than one antenna 1225, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1215 may communicate bidirectionally via one or more antennas 1225, a wired or wireless link, as described herein. For example, the transceiver 1215 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1215 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 1225 for transmission; and demodulating packets received from one or more antennas 1225. The transceiver 1215 or the transceiver 1215 and one or more antennas 1225 may be examples of transmitters 915, transmitters 1015, receivers 910, receivers 1010, or any combination thereof or components thereof as described herein.

[0205] The memory 1230 may include random access memory (RAM) and read-only memory (ROM). The memory 1230 may store computer-readable, computer-executable code 1235 including instructions that, when executed by the processor 1240, cause the device 1205 to perform various functions described herein. The code 1235 may be stored in a non-transitory computer-readable medium such as a system memory or another type of memory. In some cases, the code 1235 may not be directly executable by the processor 1240, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 1230 may also contain, among other things, a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0206] The processor 1240 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 1240 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 1240. The processor 1240 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1230) to cause the device 1205 to perform various functions (e.g., functions or tasks that support techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights). For example, the device 1205 or a component of the device 1205 may include a processor 1240 and a memory 1230 coupled to or to the processor 1240, and the processor 1240 and the memory 1230 are configured to perform the various functions described herein.

[0207] According to the examples disclosed herein, the communication manager 1220 may support wireless communication at the UE. For example, the communication manager 1220 may be configured to or otherwise support a component for sending a first control message indicating that the UE supports a static or dynamic capability of hybrid beamforming and analog beamforming based on adaptive beam weights. The communication manager 1220 may be configured to or otherwise support a component for receiving a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights. The communication manager 1220 may be configured to or otherwise support a component for sending a first set of reference signals via the first set of reference signal resources and a second set of reference signals via the second set of reference signal resources, the first set of reference signals being sent according to the hybrid beamforming, and the second set of reference signals being sent according to the analog beamforming based on adaptive beam weights. The communications manager 1220 may be configured or otherwise support means for receiving a third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming in response to the first set of reference signals and the second set of reference signals.

[0208] Additionally or alternatively, according to examples as disclosed herein, the communication manager 1220 may support wireless communications at the UE. For example, the communication manager 1220 may be configured to or otherwise support components for communicating according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights. The communication manager 1220 may be configured to or otherwise support components for sending a control message indicating a rank indicator associated with the second beamforming configuration based on switching to the second beamforming configuration. The communication manager 1220 may be configured to or otherwise support components for communicating according to the second beamforming configuration based on sending the control message indicating the rank indicator associated with the second beamforming configuration.

[0209] By including or configuring the communication manager 1220 according to the examples described herein, the device 1205 can support techniques for reducing processing and power consumption by communicating according to a beamforming scheme. For example, these techniques can improve antenna diversity by switching from analog beamforming to hybrid beamforming, or reduce complexity by switching from hybrid beamforming to analog beamforming.

[0210] In some examples, the communication manager 1220 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 1215, one or more antennas 1225, or any combination thereof. Although the communication manager 1220 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1220 may be supported or performed by the processor 1240, the memory 1230, the code 1235, or any combination thereof. For example, the code 1235 may include instructions executable by the processor 1240 to cause the device 1205 to perform various aspects of the techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights as described herein, or the processor 1240 and the memory 1230 may be otherwise configured to perform or support such operations.

[0211] Fig.13 A flow chart illustrating a method 1300 for supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is shown. The operations of the method 1300 may be implemented by a network node or a component thereof as described herein. For example, the operations of the method 1300 may be implemented by a network node or a component thereof as described herein. Figures 1 to 8 The network node described herein performs. In some examples, the network node may execute an instruction set to control the functional elements of the network node to perform the described functions. Additionally or alternatively, the network node may use dedicated hardware to perform various aspects of the described functions.

[0212] At 1305, the method may include: receiving a first control message indicating a static or dynamic capability of the UE to support hybrid beamforming and analog beamforming based on adaptive beam weights. The operations of 1305 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed as described in reference Figure 7 The beamforming capability component 725 performs as described.

[0213] At 1310, the method may include sending a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights. The operations of 1310 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by Figure 7 The described SRS configuration component 730 is performed.

[0214] At 1315, the method may include: receiving a first set of reference signals via the first set of reference signal resources and receiving a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming, and the second set of reference signals corresponding to the analog beamforming based on adaptive beam weights. The operations of 1315 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by Figure 7 The SRS receiving component 735 is used to execute.

[0215] At 1320, the method may include: sending a third control message indicating a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals. The operations of 1320 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1320 may be performed by Figure 7 The beamforming configuration component 740 is performed.

[0216] Fig.14 A flow chart illustrating a method 1400 for supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1400 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 4 and Figures 9 to 12 The described UE 115 may be performed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0217] At 1405, the method may include sending a first control message indicating a static or dynamic capability of the UE to support hybrid beamforming and analog beamforming based on adaptive beam weights. The operations of 1405 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed as described in reference to Fig.11 The beamforming capability described herein is performed by component 1125 .

[0218] At 1410, the method may include receiving a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights. The operations of 1410 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed by Fig.11 The described SRS configuration component 1130 is performed.

[0219] At 1415, the method may include: transmitting a first set of reference signals via the first set of reference signal resources and transmitting a second set of reference signals via the second set of reference signal resources, the first set of reference signals being transmitted according to the hybrid beamforming, and the second set of reference signals being transmitted according to the analog beamforming based on the adaptive beam weights. The operations of 1415 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed by Fig.11 The SRS sending component 1135 is used to execute.

[0220] At 1420, the method may include: receiving a third control message indicating a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals. The operations of 1420 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1420 may be performed by Fig.11 The beamforming configuration component 1140 is used to perform the above.

[0221] Fig.15 A flow chart illustrating a method 1500 for supporting techniques for switching between analog beamforming and hybrid beamforming based on adaptive beam weights according to one or more aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 4 and Figures 9 to 12 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0222] At 1505, the method may include: communicating according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights. The operations of 1505 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed as described in reference to Fig.11 The beamforming communication component 1145 is used to perform the above.

[0223] At 1510, the method may include: based on switching to the second beamforming configuration, sending a control message indicating a rank indicator associated with the second beamforming configuration. The operations of 1510 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed as described in reference to Fig.11The beamforming switching component 1150 is used to perform the above operation.

[0224] At 1515, the method may include: communicating according to the second beamforming configuration based on sending a control message indicating a rank indicator associated with the second beamforming configuration. The operations of 1515 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed as described in reference to Fig.11 The beamforming communication component 1145 is used to perform the above.

[0225] The following provides an overview of various aspects of the disclosure:

[0226] Aspect 1: A method for wireless communication at a network entity, the method comprising: receiving a first control message indicating a static or dynamic capability of a UE to support hybrid beamforming and analog beamforming based on adaptive beam weights; sending a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights; receiving a first set of reference signals via the first set of reference signal resources and receiving a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming and the second set of reference signals corresponding to the analog beamforming based on adaptive beam weights; and sending a third control message indicating a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals.

[0227] Aspect 2: The method according to aspect 1, further comprising: receiving a message indicating a preference between the hybrid beamforming and the adaptive beam weight-based analog beamforming in response to the rank indicator.

[0228] Aspect 3: A method according to any one of Aspects 1 to 2, wherein sending the third control message includes: sending the third control message indicating the rank indicator associated with the hybrid beamforming based at least in part on receiving the first set of reference signals and the second set of reference signals.

[0229] Aspect 4: The method according to aspect 3, wherein sending the third control message includes: sending the third control message indicating one or more parameters for a power control loop or a rate control loop associated with the hybrid beamforming.

[0230] Aspect 5: According to the method according to any one of aspects 3 to 4, the method further includes: receiving an uplink data message according to the hybrid beamforming; or sending a downlink data message according to the hybrid beamforming.

[0231] Aspect 6: A method according to any one of Aspects 1 to 5, wherein sending the third control message includes: sending the third control message indicating the rank indicator associated with the adaptive beam weight-based analog beamforming based at least in part on receiving the first set of reference signals and the second set of reference signals.

[0232] Aspect 7: The method according to Aspect 6, wherein sending the third control message includes: sending the third control message indicating one or more parameters for a power control loop or a rate control loop associated with the adaptive beam weight-based analog beamforming.

[0233] Aspect 8: According to the method described in any one of Aspects 6 to 7, the method further includes: receiving an uplink data message according to the analog beamforming based on adaptive beam weights; or sending a downlink data message according to the analog beamforming based on adaptive beam weights.

[0234] Aspect 9: A method according to any one of Aspects 1 to 8, wherein sending the second control message includes: sending the second control message indicating a first set of detection reference signal resources and a second set of detection reference signal resources, wherein the first set of reference signals is a first set of detection reference signals, and the second set of reference signals is a second set of detection reference signals.

[0235] Aspect 10: A method for performing wireless communications at a UE, the method comprising: sending a first control message indicating that the UE supports static or dynamic capabilities of hybrid beamforming and analog beamforming based on adaptive beam weights; receiving a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the analog beamforming based on adaptive beam weights; sending a first set of reference signals via the first set of reference signal resources and sending a second set of reference signals via the second set of reference signal resources, the first set of reference signals being sent according to the hybrid beamforming and the second set of reference signals being sent according to the analog beamforming based on adaptive beam weights; and receiving a third control message indicating a rank indicator associated with the hybrid beamforming or the analog beamforming based on adaptive beam weights in response to the first set of reference signals and the second set of reference signals.

[0236] Aspect 11: The method according to aspect 10, further comprising: sending a message indicating a preference between the hybrid beamforming and the adaptive beam weight-based analog beamforming in response to the rank indicator.

[0237] Aspect 12: A method according to any one of Aspects 10 to 11, wherein receiving the third control message includes: receiving the third control message indicating the rank indicator associated with the hybrid beamforming based at least in part on sending the first set of reference signals and the second set of reference signals.

[0238] Aspect 13: The method according to aspect 12, wherein receiving the third control message includes: receiving the third control message indicating one or more parameters for a power control loop or a rate control loop associated with the hybrid beamforming.

[0239] Aspect 14: According to the method according to any one of Aspects 12 to 13, the method further includes: sending an uplink data message according to the hybrid beamforming; or receiving a downlink data message according to the hybrid beamforming.

[0240] Aspect 15: A method according to any one of Aspects 10 to 14, wherein receiving the third control message includes: receiving the third control message indicating the rank indicator associated with the adaptive beam weight-based analog beamforming based at least in part on the first set of transmitted reference signals and the second set of reference signals.

[0241] Aspect 16: The method according to aspect 15, wherein receiving the third control message includes: receiving the third control message indicating one or more parameters for a power control loop or a rate control loop associated with the adaptive beam weight-based analog beamforming.

[0242] Aspect 17: According to the method described in any one of Aspects 15 to 16, the method further includes: sending an uplink data message according to the analog beamforming based on adaptive beam weights; or receiving a downlink data message according to the analog beamforming based on adaptive beam weights.

[0243] Aspect 18: A method according to any one of Aspects 10 to 17, wherein receiving the second control message includes: receiving the second control message indicating a first set of detection reference signal resources and a second set of detection reference signal resources, wherein the first set of reference signals is a first set of detection reference signals, and the second set of reference signals is a second set of detection reference signals.

[0244] Aspect 19: A method for performing wireless communications at a UE, the method comprising: communicating according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights; sending a control message indicating a rank indicator associated with a second beamforming configuration based at least in part on switching to the second beamforming configuration; and communicating according to the second beamforming configuration based at least in part on sending the control message indicating the rank indicator associated with the second beamforming configuration.

[0245] Aspect 20: The method of aspect 19, further comprising: switching to the second beamforming configuration based at least in part on a granularity of beam refinement used to communicate according to the first beamforming configuration.

[0246] Aspect 21: A method according to Aspect 20, wherein the control message is at least partially based on using a low granularity beam refinement procedure to indicate a rank indicator associated with the hybrid beamforming configuration, and switching to the second beamforming configuration includes switching from the adaptive beam weight-based analog beamforming configuration to the hybrid beamforming configuration.

[0247] Aspect 22: A method according to any one of Aspects 20 to 21, wherein the control message is at least partially based on using a fine-grained beam refinement procedure to indicate a rank indicator associated with an analog beamforming configuration based on adaptive beam weights, and switching to the second beamforming configuration includes switching from the hybrid beamforming configuration to the analog beamforming configuration based on adaptive beam weights.

[0248] Aspect 23: The method according to any one of aspects 19 to 22, the method further comprising: when communicating according to the first beamforming configuration, switching to the second beamforming configuration based at least in part on channel conditions.

[0249] Aspect 24: The method according to any one of aspects 19 to 23, the method further comprising: switching to the second beamforming configuration based at least in part on transmit power overhead or thermal overhead or both.

[0250] Aspect 25: An apparatus for performing wireless communications at a network entity, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 1 to 9.

[0251] Aspect 26: An apparatus for wireless communication at a network entity, the apparatus comprising at least one component for performing the method according to any one of aspects 1 to 9.

[0252] Aspect 27: A non-transitory computer-readable medium storing code for wireless communication at a network entity, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 9.

[0253] Aspect 28: An apparatus for performing wireless communications at a UE, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 10 to 18.

[0254] Aspect 29: An apparatus for wireless communication at a UE, the apparatus comprising: at least one component for performing a method according to any one of aspects 10 to 18.

[0255] Aspect 30: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 10 to 18.

[0256] Aspect 31: An apparatus for performing wireless communications at a UE, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 19 to 24.

[0257] Aspect 32: An apparatus for wireless communication at a UE, the apparatus comprising: at least one component for performing a method according to any one of aspects 19 to 24.

[0258] Aspect 33: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 19 to 24.

[0259] It should be noted that the methods described herein describe possible implementations, and that the various operations and steps may be rearranged or otherwise modified and that other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0260] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may also be applicable to networks other than 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 Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0261] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0262] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed using a general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, 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 in an alternative, 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 DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0263] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as one or more instructions or codes of a computer-readable medium, or sent using one or more instructions or codes of a computer-readable medium. Other examples and specific implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these items. Features that implement the functions may also be physically located at different locations, including being distributed so that the various parts of the functions are implemented at different physical locations.

[0264] Computer-readable medium includes both non-transient computer storage medium and communication medium, and the communication medium includes any medium that promotes the transfer of computer programs from one location to another location.Non-transient storage medium can be any available medium that can be accessed by a general or special computer.By way of example and not limitation, non-transient computer-readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage device, disk storage device or other magnetic storage device, or can be used for carrying or storing desired program code components and any other non-transient medium that can be accessed by a general or special computer or a general or special processor in the form of an instruction or data structure.Moreover, any connection is appropriately referred to as computer-readable medium.For example, if software is sent from a website, a server or other remote source using coaxial cable, optical fiber cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave, then coaxial cable, optical fiber cable, twisted pair, DSL or wireless technologies such as infrared, radio and microwave are included in the definition of computer-readable medium. As used herein, disks and optical disks include CDs, laser disks, optical disks, digital versatile disks (DVDs), floppy disks, and Blu-ray disks. Disks can reproduce data magnetically, and optical disks can reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0265] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items followed by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so 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 and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0266] The term "determining" encompasses a variety of actions, and thus, "determining" may include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, database or other data structure), ascertaining, and the like. Furthermore, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Additionally, "determining" may include parsing, obtaining, selecting, choosing, establishing, and other such similar actions.

[0267] In the drawings, similar components or features may have the same reference label. In addition, various components of the same type may be distinguished by following the reference label with a dash and a second label to distinguish between the similar components. If only the first reference label is used in the specification, the description may apply to any of the similar components having the same first reference label, regardless of the second or other subsequent reference labels.

[0268] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples." The specific implementation includes specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0269] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An apparatus for wireless communication at a network node, the apparatus comprising: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: receiving a first control message indicating a static or dynamic capability of a user equipment (UE) to support hybrid beamforming and analog beamforming based on adaptive beam weights; sending a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the adaptive beam weight based analog beamforming; receiving a first set of reference signals via the first set of reference signal resources and receiving a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming and the second set of reference signals corresponding to the adaptive beam weight-based analog beamforming; as well as A third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming is sent in response to the first set of reference signals and the second set of reference signals.

2. The apparatus of claim 1 , wherein the instructions are further executable by the processor to cause the apparatus to: A message indicating a preference between the hybrid beamforming and the adaptive beam weight-based analog beamforming is received in response to the rank indicator.

3. The apparatus of claim 1 , wherein the instructions are further executable by the processor to send the third control message by being executable by the processor to: The third control message indicating the rank indicator associated with the hybrid beamforming is sent based at least in part on receiving the first set of reference signals and the second set of reference signals.

4. The apparatus of claim 3, wherein the instructions are further executable by the processor to send the third control message by being executable by the processor to: The third control message is sent indicating one or more parameters for a power control loop or a rate control loop associated with the hybrid beamforming.

5. The apparatus of claim 3, wherein the instructions are further executable by the processor to cause the apparatus to: receiving an uplink data message according to the hybrid beamforming; or A downlink data message is sent according to the hybrid beamforming.

6. The apparatus of claim 1, wherein the instructions are further executable by the processor to send the third control message by being executable by the processor to: The third control message indicating the rank indicator associated with the adaptive beam weight-based analog beamforming is sent based at least in part on receiving the first set of reference signals and the second set of reference signals.

7. The apparatus of claim 6, wherein the instructions are further executable by the processor to send the third control message by being executable by the processor to: The third control message is sent indicating one or more parameters for a power control loop or a rate control loop associated with the adaptive beam weight based analog beamforming.

8. The apparatus of claim 6, wherein the instructions are further executable by the processor to cause the apparatus to: Receiving an uplink data message according to the adaptive beam weight based analog beamforming; or A downlink data message is sent according to the adaptive beam weight based analog beamforming.

9. The apparatus of claim 1, wherein the instructions are further executable by the processor to send the second control message by being executable by the processor to: The second control message is sent indicating a first set of sounding reference signal resources and a second set of sounding reference signal resources, wherein the first set of reference signals is a first set of sounding reference signals and the second set of reference signals is a second set of sounding reference signals.

10. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: sending a first control message indicating static or dynamic capability of the UE to support hybrid beamforming and analog beamforming based on adaptive beam weights; receiving a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the adaptive beam weight based analog beamforming; transmitting a first set of reference signals via the first set of reference signal resources and transmitting a second set of reference signals via the second set of reference signal resources, the first set of reference signals being transmitted according to the hybrid beamforming and the second set of reference signals being transmitted according to the adaptive beam weight-based analog beamforming; as well as A third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming is received in response to the first set of reference signals and the second set of reference signals.

11. The apparatus of claim 10, wherein the instructions are further executable by the processor to cause the apparatus to: A message indicating a preference between the hybrid beamforming and the adaptive beam weight-based analog beamforming is sent in response to the rank indicator.

12. The apparatus of claim 10, wherein the instructions are further executable by the processor to receive the third control message by being executable by the processor to: The third control message indicating the rank indicator associated with the hybrid beamforming is received based at least in part on transmitting the first set of reference signals and the second set of reference signals.

13. The apparatus of claim 12, wherein the instructions are further executable by the processor to receive the third control message by being executable by the processor to: The third control message is received indicating one or more parameters for a power control loop or a rate control loop associated with the hybrid beamforming.

14. The apparatus of claim 12, wherein the instructions are further executable by the processor to cause the apparatus to: sending an uplink data message according to the hybrid beamforming; or A downlink data message is received according to the hybrid beamforming.

15. The apparatus of claim 10, wherein the instructions are further executable by the processor to receive the third control message by being executable by the processor to: The third control message indicating the rank indicator associated with the adaptive beam weight-based analog beamforming is received based at least in part on transmitting the first set of reference signals and the second set of reference signals.

16. The apparatus of claim 15, wherein the instructions are further executable by the processor to receive the third control message by being executable by the processor to: The third control message is received indicating one or more parameters for a power control loop or a rate control loop associated with the adaptive beam weight based analog beamforming.

17. The apparatus of claim 15, wherein the instructions are further executable by the processor to cause the apparatus to: Sending an uplink data message according to the adaptive beam weight-based analog beamforming; or A downlink data message is received according to the adaptive beam weight based analog beamforming.

18. The apparatus of claim 10, wherein the instructions are further executable by the processor to receive the second control message by being executable by the processor to: The second control message is received indicating a first set of sounding reference signal resources and a second set of sounding reference signal resources, wherein the first set of reference signals is a first set of sounding reference signals and the second set of reference signals is a second set of sounding reference signals.

19. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to: communicating according to a first beamforming configuration, wherein the first beamforming configuration is a hybrid beamforming configuration or an analog beamforming configuration based on adaptive beam weights; sending a control message indicating a rank indicator associated with a second beamforming configuration based at least in part on switching to the second beamforming configuration; as well as Communicating in accordance with the second beamforming configuration based at least in part on sending the control message indicating the rank indicator associated with the second beamforming configuration.

20. The apparatus of claim 19, wherein the instructions are further executable by the processor to cause the apparatus to: Switching to the second beamforming configuration is based at least in part on a granularity of beam refinement used to communicate according to the first beamforming configuration.

21. The apparatus of claim 20, wherein: The control message indicates a rank indicator associated with the hybrid beamforming configuration based at least in part on using a low granularity beam refinement procedure, and wherein switching to the second beamforming configuration comprises switching from the adaptive beam weight-based analog beamforming configuration to the hybrid beamforming configuration.

22. The apparatus of claim 20, wherein: The control message indicates a rank indicator associated with an adaptive beam weight-based analog beamforming configuration based at least in part on using a fine granularity beam refinement procedure, and wherein switching to the second beamforming configuration comprises switching from the hybrid beamforming configuration to the adaptive beam weight-based analog beamforming configuration.

23. The apparatus of claim 19, wherein the instructions are further executable by the processor to cause the apparatus to: While communicating according to the first beamforming configuration, switching to the second beamforming configuration is performed based at least in part on channel conditions.

24. The apparatus of claim 19, wherein the instructions are further executable by the processor to cause the apparatus to: Switching to the second beamforming configuration is based at least in part on transmit power overhead or thermal overhead or both.

25. A method for wireless communication at a network node, the method comprising: receiving a first control message indicating a static or dynamic capability of a user equipment (UE) to support hybrid beamforming and analog beamforming based on adaptive beam weights; sending a second control message indicating a first set of reference signal resources associated with the hybrid beamforming and a second set of reference signal resources associated with the adaptive beam weight based analog beamforming; receiving a first set of reference signals via the first set of reference signal resources and receiving a second set of reference signals via the second set of reference signal resources, the first set of reference signals corresponding to the hybrid beamforming and the second set of reference signals corresponding to the adaptive beam weight-based analog beamforming; as well as A third control message indicating a rank indicator associated with the hybrid beamforming or the adaptive beam weight-based analog beamforming is sent in response to the first set of reference signals and the second set of reference signals.

26. The method according to claim 25, further comprising: A message indicating a preference between the hybrid beamforming and the adaptive beam weight-based analog beamforming is received in response to the rank indicator.

27. The method of claim 25, wherein sending the third control message comprises: The third control message indicating the rank indicator associated with the hybrid beamforming is sent based at least in part on receiving the first set of reference signals and the second set of reference signals.

28. The method of claim 27, wherein sending the third control message comprises: The third control message is sent indicating one or more parameters for a power control loop or a rate control loop associated with the hybrid beamforming.

29. The method according to claim 27, further comprising: receiving an uplink data message according to the hybrid beamforming; or A downlink data message is sent according to the hybrid beamforming.

30. The method of claim 25, wherein sending the third control message comprises: The third control message indicating the rank indicator associated with the adaptive beam weight-based analog beamforming is sent based at least in part on receiving the first set of reference signals and the second set of reference signals.

Images