Near-field based channel state feedback for multi-panel codebook

Abstract

Methods, systems, and devices are described for wireless communication. A user equipment (UE) can transmit channel state information to a network entity, where the channel state information indicates a first precoding matrix index for a first antenna panel of a set of antenna panels of the network entity and a second precoding matrix index for a second antenna panel of the set of antenna panels, and where the second precoding matrix index is offset from the first precoding matrix index according to an angular parameter associated with an angular separation between the first antenna panel and the second antenna panel relative to the UE. The UE can receive a message from the network entity according to the channel state information.

Description

[0001] Cross-references

[0002] This patent application claims priority to U.S. Patent Application No. 18 / 402,603, filed January 2, 2024, entitled “NEARFIELD-BASED HANNEL STATE FEEDBACK FOR MULTI-PANEL CODEBOOKS”, which is assigned to the assignee of this application and is expressly incorporated herein by reference. Technical Field

[0003] The following relates to wireless communication, including near-field-based channel state feedback for multi-panel codebooks. Background Technology

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, and broadcasting. These systems can 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, LTE-A Advanced (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 technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations, each supporting wireless communication for communication devices, which may be referred to as User Equipment (UE). Summary of the Invention

[0005] The described technology relates to improved methods, systems, devices, and apparatuses supporting near-field-based channel state feedback for multi-panel codebooks. For example, aspects of the described technology support multi-antenna panel codebook designs for pre-decoding transmissions from multiple antenna panels. For instance, a user equipment (UE) may send channel state information (CSI) to a network entity. The CSI may indicate daily antenna panel pre-decoding matrix index (PMI) information associated with antenna panels of the network entity. For example, the CSI may carry or otherwise indicate a first PMI for a first antenna panel in a set of antenna panels for the network entity. The CSI may also carry or otherwise indicate a second PMI for a second antenna panel for the network entity. In this example, the second PMI may include, indicate, or otherwise be associated with an offset from the first PMI. The offset may be based on an angular parameter corresponding to the angular difference or angular separation between the first and second antenna panels relative to the UE. The network entity can use the CSI reported from the UE to perform pre-decoding operations. For example, the UE may receive messages from the network entity based on the CSI. Therefore, the CSI reported from the UE can be used to direct transmissions from individual or subset antenna panels of a network entity toward the UE, where each antenna panel may have a different angle or beamforming direction.

[0006] A method for wireless communication by a UE is described. The method may include: sending a CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE; and receiving a message from the network entity according to the CSI.

[0007] A UE for wireless communication is described. The UE may include: one or more memories storing processor-executable code; and one or more processors coupled to the memories. The processors may operate individually or jointly to execute code causing the UE to: send a CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angular parameter associated with the angular separation between the first and second antenna panels relative to the UE; and receive a message from the network entity according to the CSI.

[0008] Another UE for wireless communication is described. The UE may include: components for transmitting a CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE; and components for receiving messages from the network entity according to the CSI.

[0009] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by one or more processors to: send a CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angular parameter associated with the angular separation between the first and second antenna panels relative to the UE; and receive a message from the network entity according to the CSI.

[0010] In some examples of the methods, user equipment (UE), and non-transitory computer-readable media described herein, the CSI indicates the angle parameter as a second PMI.

[0011] Some examples of the methods, user equipment (UE), and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving indications of a set of available angle parameters, wherein the angle parameters may be selected from the set of available angle parameters.

[0012] In some examples of the methods, user equipment (UE), and non-transitory computer-readable media described herein, the angle parameter may also be associated with the separation distance between the first antenna panel and the second antenna panel.

[0013] A method for wireless communication by a network entity is described. The method may include: receiving a Communication Interface Sign (CSI) from a UE, wherein the CSI indicates a first Point of Interest (PMI) of a first antenna panel in a set of antenna panels for the network entity and a second PMI of a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with an angular separation between the first and second antenna panels relative to the UE; and transmitting a message to the UE via the first and second antenna panels according to the CSI.

[0014] A network entity for wireless communication is described. The network entity may include: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories. The one or more processors may operate individually or jointly to execute code to cause the network entity to: receive a CSI from a UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angular parameter associated with the angular separation between the first and second antenna panels relative to the UE; and transmit a message to the UE via the first and second antenna panels according to the CSI.

[0015] Another network entity for wireless communication is described. This network entity may include: components for receiving a CSI from a UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE; and components for transmitting a message to the UE via the first and second antenna panels according to the CSI.

[0016] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by one or more processors to: receive a CSI from a UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for a network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angular parameter associated with the angular separation between the first and second antenna panels relative to the UE; and transmit a message to the UE via the first and second antenna panels according to the CSI.

[0017] Some examples of the methods, network entities, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following: selecting a first PMI based on one or more antenna characteristics of an array of antenna panels; and selecting a second PMI based on one or more antenna characteristics of the array of antenna panels, the first PMI, and angle parameters.

[0018] Some examples of the methods, network entities, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for selecting angle parameters from a set of available angle parameters, wherein the set of available angle parameters may be defined according to one or more multi-panel configurations associated with a set of antenna panels.

[0019] Some examples of the methods, network entities, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving indications of a set of available angular parameters, wherein the selection may be made according to the indications.

[0020] In some examples of the methods, network entities, and non-transitory computer-readable media described herein, CSI indicates the angle parameter as a second PMI.

[0021] In some examples of the methods, network entities, and non-transitory computer-readable media described herein, the angle parameter may also be associated with the separation distance between the first antenna panel and the second antenna panel.

[0022] In some examples of the methods, network entities, and nontransitory computer-readable media described herein, the collection of antenna panels includes four antenna panels configured in a uniform linear panel configuration.

[0023] Some examples of the methods, network entities, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following: selecting a first PMI based on a first horizontal angle characteristic of an assembly of antenna panels; selecting a second PMI based on a second horizontal angle parameter of the assembly of antenna panels and the first PMI; selecting a third PMI for a third antenna panel based on a third horizontal angle parameter of the assembly of antenna panels, the first PMI, and a first scaling of the angle parameter; and selecting a fourth PMI for a fourth antenna panel based on one or more antenna characteristics of the assembly of antenna panels, the first PMI, and a second scaling of the angle parameter.

[0024] Some examples of the methods, network entities, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following: selecting a first PMI based on a first horizontal angular characteristic and a first vertical angular characteristic of an assembly of antenna panels; selecting a second PMI based on a second horizontal angular characteristic, a first vertical angular characteristic, and the first PMI; selecting a third PMI for a third antenna panel based on a first horizontal angular characteristic, a second vertical angular characteristic, and the first PMI; and selecting a fourth PMI for a fourth antenna panel based on a second horizontal angular characteristic, a second vertical angular characteristic, and the first PMI.

[0025] In some examples of the methods, network entities, and non-transitory computer-readable media described herein, the collection of antenna panels comprises four antenna panels configured in a uniform rectangular panel configuration.

[0026] In some examples of the methods, network entities, and nontransitory computer-readable media described herein, the collection of antenna panels comprises eight antenna panels on two sub-panels, wherein each sub-panel is configured in a uniform rectangular panel configuration.

[0027] Some examples of the methods, network entities, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following: selecting a first PMI for a first antenna panel in a first sub-panel based on a first horizontal angular characteristic and a first vertical angular characteristic of the antenna panel set; selecting a second PMI for a second antenna panel in the first sub-panel based on a second horizontal angular characteristic, a first vertical angular characteristic, and the first PMI; selecting a third PMI for a third antenna panel in the first sub-panel based on a third horizontal angular characteristic, a first vertical angular characteristic, and the first PMI; and selecting a third PMI based on a fourth horizontal angular characteristic, a first vertical angular characteristic, and the first PMI. The PMI is used to select a fourth PMI for the fourth antenna panel in the first sub-panel; a fifth PMI is selected for the fifth antenna panel in the second sub-panel based on the first horizontal angle characteristic and the second vertical angle characteristic of the antenna panel set; a sixth PMI is selected for the sixth antenna panel in the second sub-panel based on the second horizontal angle characteristic, the second vertical angle characteristic and the fifth PMI; a seventh PMI is selected for the seventh antenna panel in the second sub-panel based on the third horizontal angle characteristic, the second vertical angle characteristic and the fifth PMI; and an eighth PMI is selected for the eighth antenna panel in the second sub-panel based on the fourth horizontal angle characteristic, the second vertical angle characteristic and the fifth PMI. Attached Figure Description

[0028] Figure 1 Examples of near-field-based channel state feedback wireless communication systems for multi-panel codebooks are shown, according to one or more aspects of this disclosure.

[0029] Figure 2 Examples of near-field-based channel state feedback wireless communication systems for multi-panel codebooks are shown, according to one or more aspects of this disclosure.

[0030] Figure 3 An example of an antenna panel configuration supporting near-field channel state feedback for a multi-panel codebook is shown, according to one or more aspects of this disclosure.

[0031] Figure 4An example of an antenna panel configuration supporting near-field channel state feedback for a multi-panel codebook is shown, according to one or more aspects of this disclosure.

[0032] Figure 5 An example of an antenna panel configuration supporting near-field channel state feedback for a multi-panel codebook is shown, according to one or more aspects of this disclosure.

[0033] Figure 6 and Figure 7 A block diagram of a device supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure, is shown.

[0034] Figure 8 A block diagram is shown that supports a near-field-based channel state feedback communication manager for multi-panel codebooks according to one or more aspects of this disclosure.

[0035] Figure 9 A diagram is shown of a system including a device supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure.

[0036] Figure 10 and Figure 11 A block diagram of a device supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure, is shown.

[0037] Figure 12 A block diagram is shown that supports a near-field-based channel state feedback communication manager for multi-panel codebooks according to one or more aspects of this disclosure.

[0038] Figure 13 A diagram is shown of a system including a device supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure.

[0039] Figures 14 to 18 A flowchart illustrating a method for near-field-based channel state feedback for multi-panel codebooks, according to one or more aspects of this disclosure, is shown. Detailed Implementation

[0040] Wireless devices perform wireless transmissions from an antenna array with multiple antenna panels. These transmissions are typically directed to a receiver located at a relatively large distance from the transmitting device (e.g., in the far field). In this scenario, some characteristics of the antenna panels may be disregarded when setting the transmission parameters (e.g., they may be negligible during pre-decoding). However, some receiving devices may be located within a limited distance from the transmitting device (e.g., in the near field), causing those antenna panel characteristics to affect the transmissions of the receiving devices.

[0041] Therefore, aspects of the described technology support multi-antenna panel codebook designs for pre-decoding transmissions from multiple antenna panels. For example, a User Equipment (UE) may send Channel State Information (CSI) to a network entity. The CSI may indicate daily antenna panel pre-decoding matrix index (PMI) information associated with the network entity's antenna panels. For example, the CSI may carry or otherwise indicate a first PMI for a first antenna panel in a set of antenna panels for the network entity. The CSI may also carry or otherwise indicate a second PMI for a second antenna panel for the network entity. In this example, the second PMI may include, indicate, or otherwise be associated with an offset from the first PMI. This offset may be based on an angle parameter corresponding to the angle difference or angle separation between the first and second antenna panels relative to the UE. The network entity can use the CSI reported from the UE to perform pre-decoding operations. For example, the UE may receive messages from the network entity based on the CSI. Therefore, the CSI reported from the UE can be used to guide transmissions from individual or subsets of antenna panels from the network entity toward the UE, where each antenna panel may have a different angle or beamforming direction.

[0042] The aspects of this disclosure are first described in the context of a wireless communication system. These aspects are further illustrated by apparatus diagrams, system diagrams, and flowcharts relating to near-field-based channel state feedback for multi-panel codebooks, and are described with reference to these diagrams.

[0043] Figure 1 An example of a near-field-based channel state feedback wireless communication system 100 supporting one or more aspects of this disclosure for multi-panel codebooks is shown. The wireless communication system 100 may include one or more network entities 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 under other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0044] Network entity 105 may be distributed across a geographical area to form wireless communication system 100, and may include devices employing different forms or having different capabilities. In various examples, network entity 105 may be referred to as a network element, mobility element, radio access network (RAN) node, or network equipment, etc. In some examples, network entity 105 and UE 115 may wirelessly communicate via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, network entity 105 may support coverage area 110 (e.g., a geographical coverage area) within which UE 115 and network entity 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographical area within which network entity 105 and UE 115 may support the transmission of signals according to one or more radio access technologies (RATs).

[0045] UE 115 can be distributed throughout the coverage area 110 of wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. UE 115 can be devices in different forms or with different capabilities. Figure 1 Some example UE 115s are illustrated herein. The UE 115 described herein can be able to support various types of devices (such as, e.g., ...). Figure 1 It communicates with other UEs (115 or network entity 105) as shown.

[0046] As described herein, a node in the wireless communication system 100 (which may be referred to as a network node or wireless node) may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, apparatus, device, computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be UE 115. As another example, a node may be network entity 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 UE 115, the second node may be network entity 105, and the third node may be UE 115. In another aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be network entity 105. In other aspects of this example, the first node, the second node, and the third node may be different from these examples. Similarly, references to UE 115, network entity 105, device, equipment, computing system, etc., may include disclosures of UE 115, network entity 105, device, equipment, computing system, etc., as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that a first node is configured to receive information from a second node.

[0047] In some examples, network entity 105 may communicate with core network 130, communicate with each other, or both. For example, network entity 105 may communicate with 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, network entities 105 may communicate with each other directly (e.g., directly between network entities 105) or indirectly (e.g., via core network 130) via backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols). In some examples, network entities 105 may communicate with each other via midhaul communication link 162 (e.g., according to midhaul interface protocol) or fronthaul communication link 168 (e.g., according to fronthaul interface protocol) or any combination thereof. The backhaul communication link 120, midhaul communication link 162, or fronthaul communication link 168 may be one or more wired links (e.g., electrical links, fiber optic links), one or more wireless links (e.g., radio links, wireless optical links), etc., or various combinations thereof, or may include one or more wired links (e.g., electrical links, fiber optic links), one or more wireless links (e.g., radio links, wireless optical links), etc., or various combinations thereof. UE 115 may communicate with the core network 130 via communication link 155.

[0048] One or more network entities in network entity 105 described herein may include or be referred to as base station 140 (e.g., transceiver base station, radio base station, NR base station, access point, radio transceiver, node B, eNodeB (eNB), next-generation node B or gigabit node B (any of which may be referred to as gNB), 5G NB, next-generation eNB (ng-eNB), home node B, home evolution node B, or other suitable terms). In some examples, network entity 105 (e.g., base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture that may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as base station 140).

[0049] In some examples, network entity 105 may be implemented in a decomposed architecture (e.g., a decomposed base station architecture, a decomposed RAN architecture) that can be configured to utilize protocol stacks physically or logically distributed across two or more network entities 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, network entity 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, a non-real-time RIC), a service management and orchestration (SMO) 180 system, or any combination thereof. 170 may also be referred to as a radio headend, intelligent radio headend, remote radio headend (RRH), remote radio unit (RRU), or transmit / receive point (TRP). One or more components of network entity 105 in a decomposed RAN architecture may be co-located, or one or more components of network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 in a decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0050] The functional splitting among CU 160, DU 165, and RU 170 is flexible and can 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 protocol stack functional splitting can be used between CU 160 and DU 165, allowing CU 160 to support one or more layers of the protocol stack, and DU 165 to support one or more different layers of the protocol stack. In some examples, CU 160 can host higher protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functionalities and signaling (e.g., Radio Resource Control (RRC), Serving Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP)). CU 160 can connect to one or more DU 165 or RU 170, and one or more DU 165 or RU 170 can 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 each can be at least partially controlled by CU 160. Additionally or alternatively, a protocol stack functional split can be employed between DU 165 and RU 170, such that DU 165 can support one or more layers of the protocol stack, and RU 170 can support one or more different layers of the protocol stack. DU 165 can support one or more different cells (e.g., via one or more RU 170). In some cases, functional decomposition between CU 160 and DU 165, or between DU 165 and RU 170, can be performed 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 can be performed by different of CU 160, DU 165, or RU 170). CU 160 can be further functionally decomposed into CU control plane (CU-CP) functions and CU user plane (CU-UP) functions. CU 160 can be connected to one or more DU 165 via midhaul communication link 162 (e.g., F1, F1-c, F1-u), and DU 165 can be connected to one or more RU 170 via fronthaul communication link 168 (e.g., open fronthaul (FH) interface). In some examples, the midhaul communication link 162 or the fronthaul communication link 168 may be implemented based on the interfaces (e.g., channels) between the layers of the protocol stack, which are supported by the corresponding network entities 105 communicating via such communication links.

[0051] In a wireless communication system (e.g., wireless communication system 100), the infrastructure and spectrum resources for radio access can 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 entities 105 (e.g., IAB node 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DU 165s or one or more RU 170s may be partially controlled by one or more CU 160s associated with donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate with one or more additional network entities 105 (e.g., IAB node 104) via supported access and backhaul links (e.g., backhaul communication link 120). IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a DU 165 of a coupled IAB donor. The IAB-MT may include a separate set of antennas for relaying communication with UE 115, or may share the same antennas (e.g., those of RU 170) for access to IAB node 104 via DU 165 of IAB node 104. (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, 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 IAB node 104) may be configured to operate according to the techniques described herein.

[0052] For example, the access network (AN) or RAN may include communication between an access node (e.g., an IAB donor), 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, an 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), wherein the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link). The IAB donor and IAB node 104 may communicate via an F1 interface according to a protocol defining the signaling messages (e.g., the F1 AP protocol). Additionally or alternatively, the CU 160 may communicate with the core network via an interface (which may be part of a backhaul link) and may communicate with other CU 160s (e.g., CU 160 associated with an alternative IAB donor) via an Xn-C interface (which may be part of a backhaul link).

[0053] IAB node 104 may refer to a RAN node that provides IAB functionality (e.g., access for UE 115, radio self-backhaul capability, etc.). DU 165 may act as a distributed scheduling node toward child nodes associated with IAB node 104, and IAB-MT may act as a scheduled node toward a parent node associated with IAB node 104. That is, an IAB donor may be referred to as a parent node communicating with one or more child nodes (e.g., an IAB donor may relay for UE transmissions via one or more other IAB nodes 104). Additionally or alternatively, depending on the AN's relay chain or configuration, IAB node 104 may also be referred to as a parent or child node of other IAB nodes 104. Therefore, the IAB-MT entity of IAB node 104 can provide a Uu interface for child IAB node 104 to receive signaling from parent IAB node 104, and the DU interface (e.g., DU 165) can provide a Uu interface for parent IAB node 104 to send signaling notifications to child IAB node 104 or UE 115.

[0054] For example, IAB node 104 may be referred to as a parent node supporting communication to child IAB nodes, or as a child IAB node associated with an IAB donor, or both. An IAB donor may include a CU 160 having a wired or wireless connection to core network 130 (e.g., backhaul communication link 120) and may act as a parent node of IAB node 104. For example, the IAB donor's DU 165 may relay transmissions to UE 115 via IAB node 104, or may signal transmissions directly to UE 115, or both. The IAB donor's CU 160 may signal the establishment of a communication link to IAB node 104 via an F1 interface, and IAB node 104 may schedule transmissions via DU 165 (e.g., transmissions relayed from the IAB donor to UE 115). That is, data may be relayed to and from IAB node 104 via signaling through the NR Uu interface of the MT to IAB node 104. Communication with IAB node 104 can be scheduled by DU 165 of the IAB donor, and communication with IAB node 104 can be scheduled by DU 165 of IAB node 104.

[0055] In the context of applying the techniques described herein to a decomposed RAN architecture, one or more components of the decomposed RAN architecture can be configured to support near-field-based channel state feedback for multi-panel codebooks as described herein. For example, some operations described as being performed by UE 115 or network entity 105 (e.g., base station 140) may additionally or alternatively be performed by one or more components of the decomposed RAN architecture (e.g., IAB node 104, DU 165, CU 160, RU 170, RIC 175, SMO 180).

[0056] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a cell, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0057] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, network entities 105, and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 As shown.

[0058] UE 115 and network entity 105 can 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" can refer to a set of RF spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the RF spectrum band (e.g., a bandwidth portion (BWP)) operating 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 coordinating carrier operation, user data, or other signaling. Wireless communication system 100 can support communication with UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, UE 115 can be configured using multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used in conjunction with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers. Communication between network entity 105 and other devices can refer to communication between these devices and any part of network entity 105 (e.g., entity, sub-entity). For example, the terms “send,” “receive,” or “communicate” when referring to network entity 105 can refer to any part of the RAN’s network entity 105 (e.g., base station 140, CU160, DU 165, RU 170) communicating with another device (e.g., directly or via one or more other network entities 105).

[0059] In some examples, such as in carrier aggregation configurations, a carrier may also have acquisition signaling or control signaling to coordinate 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 according to a channel grating used for discovery by UE 115. A carrier may operate in standalone mode, in which case initial acquisition and connection can be performed by UE 115 via that carrier, or the carrier may operate in non-standalone mode, in which case different carriers (e.g., the same or different radio access technologies) are used to anchor the connection.

[0060] The communication link 125 shown in the wireless communication system 100 may include downlink transmission (e.g., forward link transmission) from network entity 105 to UE 115, uplink transmission (e.g., return link transmission) from UE 115 to network entity 105, or both, as well as other transmission configurations. A carrier may carry downlink communication or uplink communication (e.g., in FDD mode), or may be configured to carry both downlink and uplink communication (e.g., in TDD mode).

[0061] A carrier may be associated with a specific bandwidth of the RF spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one bandwidth in a set of bandwidths for a particular radio access technology (e.g., 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz). Devices of the wireless communication system 100 (e.g., network entity 105, UE 115, or both) may have hardware configurations that support communication using a specific carrier bandwidth, or may be configured to support communication using one carrier bandwidth in a set of carrier bandwidths. In some examples, the wireless communication system 100 may include network entity 105 or UE 115 that supports concurrent communication using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate using a portion (e.g., subband, BWP) or all of the carrier bandwidth.

[0062] The signal waveform transmitted via a carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, 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 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 decoding rate of the modulation scheme, or both), such that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high modulation scheme order correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, temporal 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.

[0063] It can support one or more sets of parameters for a carrier, and the set of parameters may include subcarrier spacing ( (and cyclic prefix). A carrier can be divided into one or more BWPs with the same or different sets of parameters. In some examples, multiple BWPs can be used to configure UE 115. In some examples, a single BWP of a carrier can be active at a given time, and the communication of UE 115 can be constrained to one or more active BWPs.

[0064] The time interval for network entity 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period. seconds, of which It can represent the supported subcarrier spacing, and This can represent the supported Discrete Fourier Transform (DFT) size. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0065] 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, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into a 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 number of symbol periods (e.g., depending on the length of the cyclic prefix appended to each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple 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., The duration of a symbol period is associated with a (number) sampling period. The duration of a symbol period can depend on the subcarrier spacing or the operating frequency band.

[0066] A subframe, time slot, micro-time slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0067] Depending on the technology, carriers can be used to multiplex physical channels for communication. One or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used, for example, to multiplex physical control channels and physical data channels for signaling via a downlink carrier. The control region (e.g., control resource set (CORESET)) of the physical control channel can be defined by a set of symbol periods and can extend across the system bandwidth of the carrier or a subset of that bandwidth. One or more control regions (e.g., CORESET) can be configured for a set of UEs 115. For example, one or more UEs in UE 115 can monitor or search for control regions to obtain control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a concatenated manner. The aggregation level of control channel candidates can 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 set may include: a common search space set configured to transmit control information to multiple UEs 115, and a UE-specific search space set used to transmit control information to a specific UE 115.

[0068] Network entity 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used (e.g., using a carrier) to communicate with network entity 105 and may be associated with an identifier used to distinguish adjacent cells (e.g., Physical Cell Identifier (PCID), Virtual Cell Identifier (VCID), or other identifier). In some examples, a cell may also refer to a coverage area 110 or a portion of coverage area 110 (e.g., a sector) in which a logical communication entity operates. Depending on various factors such as the capabilities of network entity 105, the range of such cells may be from smaller areas (e.g., structures, subsets of structures) to larger areas. For example, a cell may be a building, a subset of buildings, or external space between or overlapping coverage areas 110, or may include buildings, subsets of buildings, or external space between or overlapping coverage areas.

[0069] Macro cells typically cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access to UE 115 that has a service subscription with a network provider supporting the macro cell. In contrast, small cells may be associated with a lower-power network entity 105 (e.g., a lower-power base station 140) and may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to UE 115 that has a service subscription with a network provider, or restricted access to UE 115 associated with a small cell (e.g., UE 115 in a Closed Subscriber Group (CSG), or UE 115 associated with a user in a home or office). Network entity 105 may support one or more cells and may also use one or more component carriers to support communication via one or more cells.

[0070] In some examples, a carrier can support multiple cells and can be configured with different cells based on different protocol types that can provide access for different types of devices (e.g., MTC, Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB)).

[0071] In some examples, network entity 105 (e.g., base station 140, RU 170) may be mobile, and thus provide communication coverage to 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 entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 use the same or different radio access technologies to provide coverage for various coverage areas 110.

[0072] The wireless communication system 100 can support synchronous or asynchronous operation. For synchronous operation, network entities 105 (e.g., base station 140) can have similar frame timings, and transmissions from different network entities 105 can be approximately time-aligned. For asynchronous operation, network entities 105 can have different frame timings, and in some examples, transmissions from different network entities 105 may not be time-aligned. The techniques described herein can be used for both synchronous and asynchronous operation.

[0073] Some UE 115 devices (such as MTC or IoT devices) can be low-cost or low-complexity devices and can provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with each other or with network entity 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 acquire information and relay such information to a central server or application that uses the information or presents it to people interacting with the application. Some UE 115 devices may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial toll collection.

[0074] Some UE 115s can be configured to operate in reduced-power modes, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but does not involve concurrent transmission and reception). In some examples, half-duplex communication can be performed at reduced peak rates. Other power-saving techniques for UE 115s include entering a power-saving deep sleep mode when not engaged in active communication, operating with limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UE 115s can be configured to operate using a narrowband protocol type associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a carrier's guard band, or outside a carrier.

[0075] Wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). UE 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communication may include private 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 prioritizing services, and such services may be used for public safety or general business applications. The terms “ultra-reliable,” “low-latency,” and “ultra-reliable low-latency” are used interchangeably herein.

[0076] In some examples, UE 115 may be configured to support direct communication with other UE 115s via device-to-device (D2D) communication link 135 (e.g., according to peer-to-peer (P2P), D2D, or sidelink protocols). In some examples, one or more UE 115s performing D2D communication in a group may be within the coverage area 110 of network entity 105 (e.g., base station 140, RU 170), which may support aspects of such D2D communication configured (e.g., scheduled by network entity 105). In some examples, one or more UE 115s in this group may be outside the coverage area 110 of network entity 105, or may otherwise be unable or not configured to receive transmissions from network entity 105. In some examples, the group of UE 115s communicating via D2D communication may support a one-to-many (1:M) system, where each UE 115 transmits to each of the other UE 115s in the group. In some examples, network entity 105 may facilitate the scheduling of resources used for D2D communication. In other examples, D2D communication may be performed between UEs 115 without involving network entity 105.

[0077] In some systems, the D2D communication link 135 may be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles may communicate using vehicle-to-vehicle (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these. Vehicles may signal information related to traffic conditions, signaling, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure (such as roadside units), or communicate with the network via one or more network nodes (e.g., network entity 105, base station 140, RU 170) using vehicle-to-network (V2N) communication, or both.

[0078] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can 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), 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), packet data network (PDN) gateway (P-GW), or user plane function (UPF)) for routing packets or interconnecting to external networks. The control plane entity manages non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by network entity 105 (e.g., base station 140) associated with core network 130. User IP packets can be transferred through user plane entities, which provide IP address allocation and other functions. User plane entities can connect to one or more network operator IP services 150. IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0079] Wireless communication system 100 can operate using one or more frequency bands in the range of 300 MHz to 300 GHz. Generally, the area from 300 MHz to 3 GHz is referred to as the Ultra High Frequency (UHF) band or decimeter band because the wavelength range is approximately 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 are sufficient to penetrate structures so that macrocells can provide service to UE 115 located indoors. Compared to communication using smaller frequencies and longer wavelengths in the lower frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz, communication using UHF waves can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0080] The wireless communication system 100 can also operate using the ultra-high frequency (SHF) region (also known as the centimeter band) in the range of 3 GHz to 30 GHz or the extremely high frequency (EHF) region (e.g., 30 GHz to 300 GHz) (also known as the millimeter band). In some examples, the wireless communication system 100 can support millimeter-wave (mmW) communication between the UE 115 and network entity 105 (e.g., base station 140, RU 170), and the EHF antennas of the corresponding devices can be smaller and more closely spaced than UHF antennas. In some examples, such techniques facilitate the use of antenna arrays within the device. However, compared to SHF or UHF transmissions, EHF transmissions may experience even greater attenuation and shorter range. The techniques disclosed herein can be adopted across transmissions using one or more different frequency regions, and the frequency band usage specified across these frequency regions may vary by country or regulatory authority.

[0081] Wireless communication system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, wireless communication system 100 may use unlicensed bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band) to employ Licensed Assisted Access (LAA), LTE Unlicensed (LTE-U) radio access technology, or NR technology. When operating with unlicensed RF spectrum, devices such as network entity 105 and UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation using unlicensed bands may be combined with component carriers operating with licensed bands based on carrier aggregation configurations (e.g., LAA). Operation using unlicensed spectrum may include downlink transmission, uplink transmission, P2P transmission, or D2D transmission, etc.

[0082] Network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of network entity 105 or UE 115 may be located within one or more antenna arrays or antenna panels, which can support MIMO operation 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, the antennas or antenna arrays associated with network entity 105 may be located at different geographical locations. Network entity 105 may include an antenna array having a collection of multiple rows and columns of antenna ports that network entity 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may include one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals transmitted via the antenna ports.

[0083] Network entity 105 or UE 115 may use MIMO communication to leverage multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. This technique may be referred to as spatial multiplexing. The multiple signals may be transmitted, 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 used for channel measurement and reporting. MIMO techniques include: single-user MIMO (SU-MIMO), for which multiple spatial layers are transmitted to the same receiving device; and multi-user MIMO (MU-MIMO), for which multiple spatial layers are transmitted to multiple devices.

[0084] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., network entity 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array such that some signals propagating along a specific orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include applying amplitude shifts, phase shifts, or both to the signals carried via the antenna elements associated with the device. The adjustments associated with each of these antenna elements may be defined by a beamforming weight set associated with a specific orientation (e.g., relative to the antenna array of the transmitting or receiving device or relative to some other orientation).

[0085] Network entity 105 or UE 115 may use beam scanning technology as part of beamforming operations. For example, network entity 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 UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by network entity 105 in different directions. For example, network entity 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. Transmission along different beam directions may be used to identify (e.g., by a transmitting device (such as network entity 105) or by a receiving device (such as UE 115)) the beam direction for later transmission or reception by network entity 105.

[0086] Some signals (such as data signals associated with a specific receiving device) may be transmitted by a transmitting device (e.g., transmitting network entity 105, transmitting UE 115) along a single beam direction (e.g., the direction associated with a receiving device (such as receiving network entity 105 or receiving UE 115). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on the signals transmitted along one or more beam directions. For example, UE 115 may receive one or more signals transmitted by network entity 105 in different directions and may report to network entity 105 an indication of signals received by UE 115 with the highest signal quality or other acceptable signal quality.

[0087] In some examples, transmissions performed by a device (e.g., network entity 105 or UE 115) may be performed using multiple beam directions, and the device may use a combination of digital pre-decoding or beamforming to generate combined beams for transmission (e.g., from network entity 105 to UE 115). UE 115 may report feedback indicating pre-decoding weights for one or more beam directions, and this feedback may correspond to a set of beams configured across the system bandwidth or one or more sub-bands. Network entity 105 may transmit reference signals (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)) that may or may not be pre-decoded. UE 115 may provide feedback for beam selection, which may be a pre-decoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel codebook, linear combination codebook, port selection codebook). Although these techniques are described with reference to signals transmitted by network entity 105 (e.g., base station 140, RU 170) in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify the beam direction used by UE 115 for subsequent transmission or reception), or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0088] A receiving device (e.g., UE 115) may perform reception operations according to multiple reception configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from a transmitting device (e.g., network entity 105). For example, the receiving device may perform reception according to multiple reception directions by: receiving via different antenna subarrays; processing the received signal according to different antenna subarrays; receiving according to different sets of reception beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets); or processing the received signal according to different sets of reception beamforming weights applied to signals received at multiple antenna elements of the antenna array. Any of these operations may be referred to as “listening” according to different reception configurations or reception directions. In some examples, the receiving device may use a single reception configuration to receive along a single beam direction (e.g., when a data signal is received). A single receiver configuration can be aligned along a beam direction determined based on listening according to different receiver 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).

[0089] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or PDCP layer can be IP-based. The RLC layer performs packet segmentation and reassembly for transmission via logical channels. The MAC layer performs priority processing and multiplexing of logical channels to transport channels. The MAC layer can also use error detection, error correction, or both to support retransmission to improve link efficiency. In the control plane, the RRC layer provides the establishment, configuration, and maintenance of RRC connections between the UE 115 and network entity 105 or core network 130 that support user plane data radio bearers. The PHY layer maps transport channels to physical channels.

[0090] UE 115 and network entity 105 can support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique used to increase the likelihood of correctly receiving data via communication links (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 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 can provide HARQ feedback in a specific time slot for data received via a previous symbol in that time slot. In some other examples, the device may provide HARQ feedback in subsequent time slots or according to a different time interval.

[0091] UE 115 may send a CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to UE 115. UE 115 may receive a message from the network entity based on the CSI.

[0092] Network entity 105 may receive a CSI from UE 115, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to UE 115. Network entity 105 may send a message to UE 115 via the first and second antenna panels according to the CSI.

[0093] Figure 2An example of a near-field-based channel state feedback wireless communication system 200 supporting a multi-panel codebook is shown, according to one or more aspects of this disclosure. The wireless communication system 200 may implement aspects of the wireless communication system 100. The wireless communication system 200 may include a UE 205 and a network entity 210, which may be examples of the corresponding devices described herein. In some aspects, the network entity 210 may include an array of antenna panels (such as a first antenna panel 215 and a second antenna panel 220), operatively coupled to or otherwise associated with the array of antenna panels.

[0094] Wireless communication is typically based on the propagation of electromagnetic fields across a medium by wireless signals. These electromagnetic fields can include various components, which may exist based on distance from the antenna. For example, a UE located in the near-field region of the antenna (e.g., within a threshold distance) can receive the inductive and capacitive components of the electromagnetic field in the far-field region of the antenna. For instance, capacitive and inductive fields may decrease in power with distance more rapidly than far-field radiation effects. This can lead to a different channel model for the near-field region compared to the channel model for the far-field region. For example, a far-field channel model may be represented by a sparse angular domain channel with a discrete Fourier transform (DFT) matrix. A near-field channel model may be represented by a weighted sum of finite near-field steering vectors, which depends not only on the channel angle but also on the channel distance.

[0095] For example, the electric field at a distance z from a point source (e.g., an antenna) can be based on both the near-field and far-field components of the electromagnetic field. Given that the near-field component of the electromagnetic field weakens with distance (z) from the antenna, some wireless networks consider the far-field region of the electromagnetic field and eliminate the near-field component used for wireless communication.

[0096] Furthermore, in some examples, the wireless device performing the wireless transmission may have more than one antenna panel, such as network entity 210. For each antenna panel, the transmitting device typically applies the same or similar structure to a type 1 single-panel pre-decoder. The transmitting device may apply co-phase to achieve inter-panel combination at the receiver. Having such a large antenna array may also result in the wireless network needing to cover a wide area of ​​the near-field channel.

[0097] With the development of wireless networks, network entities (such as network entity 210) can be equipped with a larger number of antenna elements to achieve better beamforming gain and higher-order MU-MIMO. However, as discussed above, the pre-decoding codebook specified in some wireless networks is designed based on far-field assumptions. That is, in some networks, the pre-decoding codebook may be based on the far-field effects of the electromagnetic field and may not consider the near-field effects caused by the rapid decrease in electromagnetic field with distance from the antenna. Such networks may not provide mechanisms for addressing far-field effects in wireless transmission, such as when the transmitting device is equipped with a large number of antenna panels.

[0098] Therefore, the aspects of the techniques described herein provide various examples of multi-panel pre-decoding codebook designs that take into account or otherwise illustrate near-field effects on receivers located in the near field. The aspects of the described techniques also provide channel state feedback (CSF) schemes that can be used to implement aspects of pre-decoding codebook designs supporting multi-antenna panel deployments.

[0099] For example, a receiving device (e.g., UE 205 in this example) may send or otherwise provide an output CSI to a transmitting device (e.g., network entity 210 in this example). The CSI may carry or otherwise convey indications of a first PMI for the first antenna panel 215 and a second PMI for the second antenna panel 220. In some aspects, the second PMI may be, or may be, based on an offset from the first PMI. This offset may typically correspond to an angle parameter associated with the angular separation between the first antenna panel 215 and the second antenna panel 220 relative to the UE. In some examples, the second PMI may be an angle parameter, or may be a PMI value derived from or otherwise associated with the angle parameter. UE 205 may receive or otherwise obtain a message from network entity 210 based on the CSI. For example, network entity 210 may apply the first and second PMIs when sending a message to UE 205.

[0100] For example, the pre-decoding matrix structure can be given by the following formula:

[0101] Where X is the pre-decoding matrix, which depends on the horizontal and vertical beam direction parameters used for the p-th panel. And if the first level PMI (e.g., the first level DFT index) used for the first antenna panel 215 is Then the second level PMI (e.g., the second level DFT index) used for the second day line panel 220 can be:

[0102] Where α is the angle parameter, and This represents a modulo operation. In some examples, the maximum α value (e.g., or a candidate α value) may be specified in relevant criteria or configured by network entity 210. For example, network entity 210 may send or otherwise provide an output (and UE 205 may receive or otherwise obtain) indicating a set of available angle parameters. UE 205 may select or otherwise identify the angle parameters used for CSI based on this indication. As discussed, angle parameters may be based on a multi-panel configuration associated with a set of antenna panels of network entity 210, or otherwise defined according to that multi-panel configuration. For example, the maximum α value (or candidate α value) may depend on multi-panel configuration parameters. and .parameter This can correspond to the number of antenna panels in the set of antenna panels, and It is an oversampling factor used to determine the number of pre-decoding matrices in a multi-panel codebook.

[0103] In some examples, among other PMI values ​​(e.g., In addition to the angle parameter (e.g., α), the angle parameter can be determined and reported by the UE 205. For example, for a maximum α=7 (candidate values ​​are α=0, …,7), three bits can be used to indicate the angle parameter in the CSI reported by the UE 205.

[0104] Network entity 210 may receive CSI from UE 205 and apply a first PMI and a second PMI when configuring the antenna panels for transmission to UE 205. For example, network entity 210 may apply the PMI information provided by UE 205 for pre-decoding operations. Pre-decoding operations may include network entity 210 guiding radio transmissions from each antenna panel to be directed toward UE 205. That is, pre-decoding operations typically include network entity 210 selecting values ​​or other configurations to be applied to each antenna panel to guide electromagnetic fields (e.g., radio transmissions) in a direction selected based on the position of UE 205 relative to the antenna array having the antenna panels.

[0105] In some respects, the angle parameters reported by UE 205 can be used to describe the near-field aspects of radio transmissions to UE 205. That is, UE 205 may be located within the near-field range of the antenna panel of network entity 210. Reporting PMIs individually on a daily antenna panel basis allows network entity 210 to pre-decode (e.g., guide) transmissions from each antenna panel toward UE 205. As discussed above, some wireless networks eliminate near-field effects of radio transmissions, which can disrupt transmissions to near-field UEs. Therefore, a pre-decoding operation can be implemented based on the offset between the first and second PMIs according to the angle parameter (α), which causes each beam transmitted from the antenna panel toward UE 205 to be guided taking into account the angle of UE 205 relative to the position of the antenna panel from which the beam is transmitted. Figure 2 As illustrated, this could include each beam being transmitted in a different direction (e.g., offset), where the beam direction is based on an angular parameter between the associated antenna panel and the UE 205.

[0106] Figure 3 An example of an antenna panel configuration 300 supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure, is shown. The antenna panel configuration 300 may implement aspects of wireless communication system 100 or wireless communication system 200. The aspects of the antenna panel configuration 300 may be implemented at or by a UE 305 or a network entity, which may be an example of the corresponding device described herein.

[0107] Antenna panel configuration 300 illustrates a non-limiting example of a dual-panel configuration, wherein the set of antenna panels on a network entity comprises two antenna panels configured in a horizontal panel (e.g., next to each other rather than on top of each other). As discussed above, the techniques described herein provide that UE 305 sends or otherwise reports CSI to a network entity, and includes or otherwise indicates a first PMI for a first antenna panel 310 and a second PMI for a second antenna panel 315. The first antenna panel 310 and the second antenna panel 315 may form a set of antenna panels of a network entity, although in some examples, the set of antenna panels may include more than two antenna panels.

[0108] The second PMI indicated in the CSI reported by UE 305 may be, or can be, based on an offset from the first PMI. This offset may be based on, or otherwise determined by, an associated angle parameter separated from the angle between the first antenna panel 310 and the second antenna panel 315 relative to UE 305 (e.g., relative to the position of UE 305). Network entities may use the CSI reported by UE 305 to send messages to the UE. For example, pre-decoding operations applied by the network entity may be based on the first and second PMIs. In some examples, the angle parameter (α) may be configured by the network entity, reported separately by UE 305, or embedded in the pre-decoding codebook design.

[0109] The size of the antenna array of the network entity, including the antenna panel. According to To be used or based on panel size ( ), where P is the number of antenna panels in the set (two in this example). The position of UE 305 relative to the antenna array (e.g., from the center point of the antenna array) can be defined as R, and the angle of UE 305 relative to the antenna array can be defined as θ. The angle between each antenna panel (e.g., the center point of each antenna panel, determined by...) is... (Definition) can be defined as Φ (e.g., For use in the first antenna panel 310 and Used for the second antenna panel 315). The angle difference or angle separation between different antenna panels and UE 305 can be defined as:

[0110] For use in the first antenna panel 310, and can be defined as:

[0111] For use with the second antenna panel 315. The angle parameter α, indicated in or as the second PMI reported in the CSI, may be based on the angle difference or angle separation between the antenna panel and the UE 305.

[0112] Furthermore, in some examples, the angle parameter may be considered, included, or otherwise based on the separation distance (δ) between the first antenna panel 310 and the second antenna panel 315. An additional inter-panel distance is added. ,in ,in And L is a numerical value (e.g., 4, 8). When separation distance is included, the angular difference between different panels (e.g., when P-=2) can be selected, identified, or otherwise determined using the following methods:

[0113] For use in the first antenna panel 310, and to be selected, identified, or otherwise determined using the following:

[0114] For use in the second antenna panel 315.

[0115] Regarding the relationship between the angle difference and the DFT-based codebook, the steering vector is: .for , For type 1 DFT vectors .for , Therefore, the relationship between the steering angle and the DFT index can be based on... .exist and In this case, the steering vector can be based on: (or ),

[0116] as well as (or ), .

[0117] Therefore, the CSIs reported from UE 305 indicating the first PMI for the first antenna panel 310 and the second PMI for the second antenna panel 315 can be used for DFT indexing to develop steering vectors to be applied to each antenna panel. For example, a network entity can select the first PMI based on the antenna characteristics of the set of antenna panels, and then select the second PMI based on the first PMI, angle parameters, and antenna characteristics. Steering vectors can be used to shape beamforming transmission from each antenna panel to UE 305 in a manner that supports the near-field region. In some examples, steering vectors can be based on the separation distance between antenna panels. In other examples, the separation distance can be omitted from the steering vector calculation.

[0118] Figure 4 An example of an antenna panel configuration 400 supporting near-field channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure, is shown. The antenna panel configuration 400 may implement aspects of wireless communication system 100 or wireless communication system 200, or aspects of antenna panel configuration 300. The aspects of antenna panel configuration 400 may be implemented at or by a UE 405 or a network entity, which may be an example of the corresponding device described herein.

[0119] Antenna panel configuration 400 illustrates a non-limiting example of a four-panel configuration, wherein the set of antenna panels of the network entity comprises four antenna panels configured in a uniformly linear panel (ULP) configuration. As discussed above, the techniques described herein provide that UE 405 sends or otherwise reports CSI to the network entity, and includes or otherwise indicates a first PMI for the first antenna panel 410 and a second PMI for the second antenna panel 415. In some examples, the CSI may also indicate a third PMI for the third antenna panel 420 and a fourth PMI for the fourth antenna panel 425.

[0120] The first antenna panel 410, the second antenna panel 415, the third antenna panel 420, and the fourth antenna panel 425 may form a set of antenna panels for a network entity, although in some examples the set of antenna panels may include more than four antenna panels.

[0121] The PMI indicated in the CSI reported by UE 405 may be, or can be based on, for example, an offset from the first PMI. This offset may be based on, or otherwise, an associated angle parameter separated from the angles of the first antenna panel 410, the second antenna panel 415, the third antenna panel 420, and the fourth antenna panel 425 relative to UE 405 (e.g., relative to the position of UE 405). Network entities may use the CSI reported by UE 405 to send messages to the UE. For example, pre-decoding operations applied by the network entity may be based on the PMI index provided by UE 405. In some examples, the angle parameter (α) may be configured by the network entity, reported separately by UE 405, or embedded in the pre-decoding codebook design.

[0122] Depending on the panel structure (e.g., 4×1 vs. 2×2), different pre-decoding structures can be used by the network entity. Horizontal shift value (α) and vertical shift ( b (When the antenna array is in a 2x2 configuration) This can be different in some configurations.

[0123] In some respects, array size ( ) can be based on The position of UE 405 relative to the antenna array (e.g., from the center point of the antenna array) can be defined as R, and the angle of UE 405 relative to the center point of the antenna array can be defined as θ. The angle between each antenna panel (e.g., the center point of each antenna panel, determined by...) is... (Definition) can be defined as Φ (e.g., For use in the first antenna panel 410, Used for the second antenna panel 415. For use in the third antenna panel 420, and (For use with the fourth antenna panel 425). The angle difference or angle separation between different antenna panels and UE 405 can be defined as:

[0124] They are respectively used in the first antenna panel 410, the second antenna panel 415, the third antenna panel 420 and the fourth antenna panel 425.

[0125] Therefore, the pre-decoding matrix structure for a four-antenna ULP configuration (e.g., a 4x1 antenna panel) can be given by the following equation:

[0126] Wherein, if the DFT index used for the first antenna panel 410 is The pre-decoding indices used for the second antenna panel 415, the third antenna panel 420, and the fourth antenna panel 425 can be respectively: ,as well as .

[0127] Therefore, the UE can determine the first level PMI (e.g., based on the set of antenna panels of the network entity) The UE can calculate, select, or otherwise identify the first pre-decoding matrix for the first antenna panel 410 based on the first horizontal PMI and angle parameters (e.g., a The second level of PMI calculated (e.g., The UE can calculate, select, or otherwise identify the second pre-decoding matrix for the second antenna panel 415 based on the first horizontal PMI of the antenna panel set and the first scaling factor of the angle parameter (e.g., 2). The UE can calculate, select, or otherwise identify the third horizontal PMI for the third antenna panel 420 based on the first horizontal PMI of the antenna panel set and the second scaling of the angle parameter (e.g., 3). ( ) to calculate, select or otherwise identify the fourth level PMI for the fourth antenna panel 425.

[0128] Figure 5An example of an antenna panel configuration 500 supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure, is shown. The antenna panel configuration 500 may implement aspects of wireless communication system 100 or wireless communication system 200, or aspects of antenna panel configuration 300 or antenna panel configuration 400. The aspects of the antenna panel configuration 500 may be implemented at or by a UE 505 or a network entity, which may be an example of the corresponding device described herein.

[0129] Antenna panel configuration 500 illustrates a non-limiting example of a four-panel configuration, wherein the set of antenna panels of the network entity comprises four antenna panels configured in a uniform rectangular panel (URP) configuration. As discussed above, the techniques described herein provide that UE 505 sends or otherwise reports CSI to the network entity, and includes or otherwise indicates a first PMI for a first antenna panel 510 and a second PMI for a second antenna panel 515. In some examples, the CSI may also indicate a third PMI for a third antenna panel 520 and a fourth PMI for a fourth antenna panel 525.

[0130] The first antenna panel 510, the second antenna panel 515, the third antenna panel 520, and the fourth antenna panel 525 may form a set of antenna panels for a network entity, although in some examples the set of antenna panels may include more than four antenna panels.

[0131] The PMI indicated in the CSI reported by UE 505 may be, or can be based on, for example, an offset from a first PMI. This offset may be based on, or otherwise separated from, an associated angle parameter relative to the angles of the first antenna panel 510, the second antenna panel 515, the third antenna panel 520, and the fourth antenna panel 525 relative to UE 505 (e.g., relative to the position of UE 505). Network entities may use the CSI reported by UE 505 to send messages to the UE. For example, pre-decoding operations applied by the network entity may be based on the PMI index provided by UE 505. In some examples, the angle parameter (α) may be configured by the network entity, reported separately by UE 505, or embedded in the pre-decoding codebook design.

[0132] Depending on the panel structure (e.g., 4×1 vs. 2×2), different pre-decoding structures can be used by the network entity. Horizontal shift value (a) and vertical shift ( b (When the antenna array is in a 2x2 configuration) This can differ in some configurations. In some examples, the 2x2 URP design can be a reference. Figure 2 and Figure 3 The two-dimensional extension of the double-panel case discussed.

[0133] The pre-decoding structure for the 2x2 URP case can be given by the following formula:

[0134] If the DFT index used for the first antenna panel 510 is ,but and It can be given by the following formula: , in and It represents the number of antenna elements used in the horizontal (H) and vertical (V) dimensions, respectively.

[0135] Therefore, the UE can determine the first level PMI (e.g., based on the set of antenna panels of the network entity) ) and the first vertical PMI (e.g., The UE can calculate, select, or otherwise identify the first pre-decoding matrix for the first antenna panel 510 based on a first level PMI (e.g., ), First vertical PMI (e.g., ) and the first angle parameter (e.g., a The UE can calculate, select, or otherwise identify the second pre-decoding matrix used for the second antenna panel 515. The UE can then use the first level PMI (e.g., ), First vertical PMI (e.g., ) and second angle parameter (e.g., b The UE can calculate, select, or otherwise identify the third pre-decoding matrix used for the third antenna panel 520. The UE can then use the first level PMI (e.g., ), First vertical PMI (e.g., ), the first pre-decoding matrix, and the first angle parameter (e.g., a ) and second angle parameter (e.g., b ( ) to calculate, select or otherwise identify the fourth pre-decoding matrix used for the fourth antenna panel 525.

[0136] Network entities can apply PMI indexes during pre-decoding operations at each antenna panel to form directional transmissions from each antenna panel toward UE 505.

[0137] The maximum angle parameter values ​​(or candidate values) used for horizontal and vertical angle aspects can be configured by the network entity. Among other PMI values ​​or parameters, the angle parameters used for horizontal and vertical angle characteristics can be determined and reported separately by the UE 505.

[0138] Although the techniques discussed in this article are generally described in the context of dual-panel or quad-panel antenna arrays, it should be understood that these techniques can be extended to antenna arrays with more than four antenna panels.

[0139] For example, the antenna array of a network entity may include eight antenna panels, which can be implemented in a rectangular 4×2 (or 2×4) structure (e.g., URP). That is, the set of antenna panels of the network entity can be divided into two sub-panels, where each sub-panel of the antenna is considered as a 4×2 URP case. The 4×2 URP case can be considered as a two-dimensional combination of four URPs and two URP cases. For example, the pre-decoding structure for 4×2 URP can be given by the following formula:

[0140] Wherein, if the DFT index used for the first antenna panel is Then the pre-decoded index , , and It can be given by the following formula: , , Therefore, the UE can determine the first level PMI (e.g., based on the set of antenna panels of the network entity) ) and the first vertical PMI (e.g., The UE may calculate, select, or otherwise identify the first pre-decoding matrix for the first antenna panel in the first sub-panel. The UE may also use a second level PMI (e.g., ) and the first vertical PMI (e.g., The UE can calculate, select, or otherwise identify the second pre-decoding matrix for the second antenna panel in the first sub-panel. The UE can also use a third-level PMI (e.g., ) and the first vertical PMI (e.g., The UE can calculate, select, or otherwise identify the third pre-decoding matrix for the third antenna panel in the first sub-panel. The UE can also use a fourth level PMI (e.g., ) and the first vertical PMI (e.g., ( ) to calculate, select or otherwise identify the fourth pre-decoding matrix for the fourth antenna panel in the first sub-panel.

[0141] For the second sub-panel, the UE can determine the first level PMI (e.g., based on the set of antenna panels of the network entity) according to the network entity. ) and the second vertical PMI (e.g., The UE can calculate, select, or otherwise identify the fifth pre-decoding matrix for the fifth antenna panel in the second sub-panel. The UE can then use the second level PMI (e.g., ) and the second vertical PMI (e.g., The UE can calculate, select, or otherwise identify the sixth pre-decoding matrix for the sixth antenna panel in the second sub-panel. The UE can then use the third level PMI (e.g., ) and the second vertical PMI (e.g., The UE can calculate, select, or otherwise identify the seventh pre-decoding matrix for the seventh antenna panel in the second sub-panel. The UE can then use the fourth level PMI (e.g., ) and the second vertical PMI (e.g., ( ) to calculate, select, or otherwise identify the eighth pre-decoded matrix for the eighth antenna panel in the second sub-panel.

[0142] Network entities can apply PMI indexes during pre-decoding operations at each antenna panel to form directional transmissions from each antenna panel toward UE 505.

[0143] Figure 6 A block diagram 600 illustrates a device 605 supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure. Device 605 may be an example of various aspects of a UE 115 as described herein. Device 605 may include a receiver 610, a transmitter 615, and a communication manager 620. Device 605, or one or more components of device 605 (e.g., receiver 610, transmitter 615, and communication manager 620), may include at least one processor that may be coupled to at least one memory to individually or jointly support or implement the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0144] Receiver 610 may provide components for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels associated with near-field-based channel state feedback for multi-panel codebooks). The information may be passed to other components of device 605. Receiver 610 may utilize a single antenna or a collection of antennas.

[0145] Transmitter 615 may provide components for transmitting signals generated by other components of device 605. For example, transmitter 615 may transmit information associated with various information channels, such as control channels, data channels, and information channels related to near-field-based channel state feedback for multi-panel codebooks, including packets, user data, control information, or any combination thereof. In some examples, transmitter 615 may be co-located with receiver 610 in a transceiver module. Transmitter 615 may utilize a single antenna or a collection of multiple antennas.

[0146] The communication manager 620, receiver 610, transmitter 615, or various combinations thereof, or various components thereof, may be examples of components used to perform various aspects of near-field-based channel state feedback for multi-panel codebooks as described herein. For example, the communication manager 620, receiver 610, transmitter 615, or various combinations thereof, or components thereof, may be able to perform one or more of the functions described herein.

[0147] In some examples, the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include at least one of the following: a processor, digital signal processor (DSP), central processing unit (CPU), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, microcontroller, discrete gate or transistor logic component, discrete hardware component, or any combination thereof, configured as or otherwise individually or collectively to support components for performing the functions described herein. In some examples, at least one processor and at least one memory coupled to said at least one processor may be configured to perform one or more of the functions described herein (e.g., instructions stored in at least one memory are executed individually or collectively by one or more processors).

[0148] Additionally or alternatively, the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communication management software or firmware). If implemented in code executed by at least one processor, the functionality of the communication manager 620, receiver 610, transmitter 615, or various combinations or components thereof may be performed by any combination of a general-purpose processor, DSP, CPU, ASIC, FPGA, microcontroller, or these or other programmable logic devices (e.g., configured as or otherwise individually or collectively to support components for performing the functions described in this disclosure).

[0149] In some examples, the communication manager 620 may be configured to use a receiver 610, a transmitter 615, or both, or otherwise cooperate with the receiver, the transmitter, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, the communication manager 620 may receive information from the receiver 610, transmit information to the transmitter 615, or be integrated in combination with the receiver 610, the transmitter 615, or both to acquire information, output information, or perform various other operations as described herein.

[0150] Communication manager 620 can support wireless communication according to examples disclosed herein. For example, communication manager 620 is capable of, configured to, or operable to support components for transmitting a CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. Communication manager 620 is capable of, configured to, or operable to support components for receiving messages from a network entity according to the CSI.

[0151] By including or configuring a communication manager 620 according to an example as described herein, device 605 (e.g., controlling receiver 610, transmitter 615, communication manager 620 or a combination thereof, or at least one processor otherwise coupled to the receiver, transmitter, communication manager or a combination thereof) can support techniques for more efficient use of communication resources and more effective pre-decoding, which can help improve user experience, increase throughput and improve spectrum efficiency.

[0152] Figure 7 A block diagram 700 illustrates a device 705 supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure. Device 705 may be an example of aspects of device 605 or UE 115 as described herein. Device 705 may include a receiver 710, a transmitter 715, and a communication manager 720. Device 705, or one or more components of device 705 (e.g., receiver 710, transmitter 715, and communication manager 720), may include at least one processor that may be coupled to at least one memory to support the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0153] Receiver 710 may provide components for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels associated with near-field-based channel state feedback for multi-panel codebooks). The information may be passed to other components of device 705. Receiver 710 may utilize a single antenna or a collection of multiple antennas.

[0154] Transmitter 715 may provide components for transmitting signals generated by other components of device 705. For example, transmitter 715 may transmit information associated with various information channels, such as control channels, data channels, and information channels related to near-field-based channel state feedback for multi-panel codebooks, including packets, user data, control information, or any combination thereof. In some examples, transmitter 715 may be co-located with receiver 710 in a transceiver module. Transmitter 715 may utilize a single antenna or a collection of multiple antennas.

[0155] Device 705 or its various components may be examples of parts for performing various aspects of near-field-based channel state feedback as described herein for multi-panel codebooks. For example, communication manager 720 may include CSI report manager 725, multi-panel transmitter manager 730, or any combination thereof. Communication manager 720 may be examples of aspects of communication manager 620 as described herein. In some examples, communication manager 720 or its various components may be configured to use receiver 710, transmitter 715, or both, or otherwise cooperate with the receiver, transmitter, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, communication manager 720 may receive information from receiver 710, transmit information to transmitter 715, or be integrated in combination with receiver 710, transmitter 715, or both to acquire information, output information, or perform various other operations as described herein.

[0156] Communication manager 720 can support wireless communication according to examples disclosed herein. CSI report manager 725 is capable of, configured to, or operable to support components for transmitting CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. Multi-panel transmission manager 730 is capable of, configured to, or operable to support components for receiving messages from a network entity according to CSI.

[0157] Figure 8A block diagram 800 is shown of a communication manager 820 supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure. The communication manager 820 may be an example of a communication manager 620, a communication manager 720, or aspects thereof as described herein. The communication manager 820 or its various components may be examples of parts for performing various aspects of near-field-based channel state feedback for a multi-panel codebook as described herein. For example, the communication manager 820 may include a CSI report manager 825, a multi-panel transmission manager 830, a configuration manager 835, or any combination thereof. Each of these components, or its components or sub-components (e.g., one or more processors, one or more memories), may communicate directly or indirectly with each other (e.g., via one or more buses).

[0158] Communication manager 820 can support wireless communication according to examples disclosed herein. CSI report manager 825 is capable of, configured to, or operable to support components for transmitting CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. Multi-panel transmission manager 830 is capable of, configured to, or operable to support components for receiving messages from a network entity according to CSI.

[0159] In some examples, CSI indicates the angle parameter as a second PMI.

[0160] In some examples, the configuration manager 835 is capable of, configured to, or able to operate to support a component for receiving an indication of a set of available angle parameters, wherein the angle parameters are selected from the set of available angle parameters.

[0161] In some examples, the angle parameter is also associated with the separation distance between the first antenna panel and the second antenna panel.

[0162] Figure 9A diagram of a system 900 including a device 905 supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure, is shown. Device 905 may be an example of device 605, device 705, or UE 115 as described herein, or may include components thereof. Device 905 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof (e.g., wirelessly). Device 905 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 920, an input / output (I / O) controller 910, a transceiver 915, an antenna 925, at least one memory 930, a code 935, and at least one processor 940. These components may communicate electronically or be coupled in other ways (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 945).

[0163] I / O controller 910 manages the input and output signals of device 905. I / O controller 910 can also manage peripheral devices not integrated into device 905. In some cases, I / O controller 910 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 910 may utilize an operating system such as iOS. ® ANDROID ® MS-DOS ® MS-WINDOWS ® OS / 2 ® UNIX ® LINUX ® Alternatively, it may be another known operating system. Additionally or alternatively, the I / O controller 910 may represent, or interact with, a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 910 may be implemented as part of one or more processors, such as at least one processor 940. In some cases, a user may interact with the device 905 via the I / O controller 910 or via hardware components controlled by the I / O controller 910.

[0164] In some cases, device 905 may include a single antenna 925. However, in other cases, device 905 may have more than one antenna 925, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. Transceiver 915 may communicate bidirectionally via one or more antennas 925, a wired link, or a wireless link as described herein. For example, transceiver 915 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 915 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 925 for transmission; and demodulating packets received from one or more antennas 925. Transceiver 915, or transceiver 915 and one or more antennas 925, may be an example of transmitter 615, transmitter 715, receiver 610, receiver 710, or any combination thereof or components thereof as described herein.

[0165] At least one memory 930 may include random access memory (RAM) and read-only memory (ROM). At least one memory 930 may store computer-readable, computer-executable code 935, including instructions that, when executed by at least one processor 940, cause device 905 to perform the various functions described herein. Code 935 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 935 may not be directly executable by at least one processor 940, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, at least one memory 930 may contain a basic I / O system (BIOS), etc., which controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0166] At least one processor 940 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, at least one processor 940 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into at least one processor 940. At least one processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., at least one memory 930) to cause device 905 to perform various functions (e.g., functions or tasks supporting near-field-based channel state feedback for multi-panel codebooks). For example, device 905 or components of device 905 may include at least one processor 940 and at least one memory 930 coupled to or coupled to at least one processor 940, wherein at least one processor 940 and at least one memory 930 are configured to perform the various functions described herein. In some examples, at least one processor 940 may include multiple processors, and at least one memory 930 may include multiple memories. One or more of a plurality of processors may be coupled to one or more of a plurality of memories, which may be configured individually or collectively to perform the various functions described herein. In some examples, at least one processor 940 may be a component of a processing system, which may refer to a system of machines (such as a series of machines), circuitry (including, for example, one or both of processor circuitry (which may include at least one processor 940) and memory circuitry (which may include at least one memory 930)) or components that receive or receive input and process the input to produce, generate or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, at least one processor 940 or a processing system including at least one processor 940 may be configured, capable of being configured, or operable to cause device 905 to perform one or more of the functions described herein. Furthermore, as described herein, “configured to,” “capable of being configured,” and “operable to” are used interchangeably and may be associated with the ability to perform one or more of the functions described herein when executing code stored in at least one memory 930 or otherwise.

[0167] The communication manager 920 can support wireless communication according to examples disclosed herein. For example, the communication manager 920 can be, configured, or operated to support components for transmitting a CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. The communication manager 920 can be, configured, or operated to support components for receiving messages from a network entity according to the CSI.

[0168] By including or configuring a communication manager 920 according to an example as described herein, device 905 can support techniques for more efficient use of communication resources and more effective pre-decoding, which can help improve user experience, increase throughput, and improve spectrum efficiency.

[0169] In some examples, the communication manager 920 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using a transceiver 915, one or more antennas 925, or any combination thereof, or otherwise cooperating with the transceiver, the one or more antennas, or any combination thereof. Although the communication manager 920 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 920 may be supported or executed by at least one processor 940, at least one memory 930, code 935, or any combination thereof. For example, code 935 may include instructions that can be executed by at least one processor 940 to cause device 905 to perform various aspects of near-field-based channel state feedback for multi-panel codebooks as described herein, or at least one processor 940 and at least one memory 930 may be otherwise configured to perform or support such operations individually or jointly.

[0170] Figure 10 A block diagram 1000 is shown of a device 1005 supporting near-field-based channel state feedback for multi-panel codebooks according to one or more aspects of this disclosure. Device 1005 may be an example of various aspects of network entity 105 as described herein. Device 1005 may include a receiver 1010, a transmitter 1015, and a communication manager 1020. Device 1005, or one or more components of device 1005 (e.g., receiver 1010, transmitter 1015, and communication manager 1020), may include at least one processor that may be coupled to at least one memory to individually or jointly support or implement the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0171] Receiver 1010 may provide components for acquiring (e.g., receiving, determining, identifying) information (such as user data, control information, or any combination thereof (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). The information may be passed to other components of device 1005. In some examples, receiver 1010 may support acquiring information by receiving signals via one or more antennas. Additionally or alternatively, receiver 1010 may support acquiring information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.

[0172] Transmitter 1015 may provide components for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of device 1005. For example, transmitter 1015 may output information 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 (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, transmitter 1015 may support outputting information by transmitting signals via one or more antennas. Additionally or alternatively, transmitter 1015 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, transmitter 1015 and receiver 1010 may be co-located in a transceiver, which may include or be coupled to a modem.

[0173] The communication manager 1020, receiver 1010, transmitter 1015, or various combinations thereof, or various components thereof, may be examples of components used to perform various aspects of near-field-based channel state feedback for multi-panel codebooks as described herein. For example, the communication manager 1020, receiver 1010, transmitter 1015, or various combinations thereof, or components thereof, may be able to perform one or more of the functions described herein.

[0174] In some examples, the communication manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include at least one of a processor, DSP, CPU, ASIC, FPGA, or other programmable logic device, microcontroller, discrete gate or transistor logic unit, discrete hardware component, or any combination thereof, configured as or otherwise individually or collectively to support components for performing the functions described herein. In some examples, at least one processor and at least one memory coupled to said at least one processor may be configured to perform one or more of the functions described herein (e.g., instructions stored in at least one memory are executed individually or collectively by one or more processors).

[0175] Additionally or alternatively, the communication manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communication management software or firmware). If implemented in code executed by at least one processor, the functionality of the communication manager 1020, receiver 1010, transmitter 1015, or various combinations or components thereof may be performed by any combination of a general-purpose processor, DSP, CPU, ASIC, FPGA, microcontroller, or these or other programmable logic devices (e.g., configured as or otherwise individually or collectively to support components for performing the functions described in this disclosure).

[0176] In some examples, the communication manager 1020 may be configured to use a receiver 1010, a transmitter 1015, or both, or otherwise cooperate with the receiver, the transmitter, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, the communication 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 acquire information, output information, or perform various other operations as described herein.

[0177] The communication manager 1020 can support wireless communication according to examples disclosed herein. For example, the communication manager 1020 is capable of, configured to, or operable to support components for receiving a CSI from a UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for a network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. The communication manager 1020 is capable of, configured to, or operable to support components for transmitting messages to the UE via the first and second antenna panels according to the CSI.

[0178] By including or configuring a communication manager 1020 according to an example as described herein, device 1005 (e.g., at least one processor that controls receiver 1010, transmitter 1015, communication manager 1020 or a combination thereof, or otherwise coupled to the receiver, transmitter, communication manager or a combination thereof) can support techniques for more efficient use of communication resources and more effective pre-decoding, which can help improve user experience, increase throughput and improve spectrum efficiency.

[0179] Figure 11 A block diagram 1100 of a device 1105 supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure, is shown. Device 1105 may be an example of aspects of device 1005 or network entity 105 as described herein. Device 1105 may include a receiver 1110, a transmitter 1115, and a communication manager 1120. Device 1105, or one or more components of device 1105 (e.g., receiver 1110, transmitter 1115, and communication manager 1120), may include at least one processor that may be coupled to at least one memory to support the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0180] Receiver 1110 may provide components for acquiring (e.g., receiving, determining, identifying) information (such as user data, control information, or any combination thereof (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). The information may be passed to other components of device 1105. In some examples, receiver 1110 may support acquiring information by receiving signals via one or more antennas. Additionally or alternatively, receiver 1110 may support acquiring information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.

[0181] Transmitter 1115 may provide components for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of device 1105. For example, transmitter 1115 may output information 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 (e.g., I / Q samples, symbols, packets, protocol data units, service data units). In some examples, transmitter 1115 may support outputting information by transmitting signals via one or more antennas. Additionally or alternatively, transmitter 1115 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, transmitter 1115 and receiver 1110 may be co-located in a transceiver, which may include or be coupled to a modem.

[0182] Device 1105 or its various components may be examples of parts for performing various aspects of near-field-based channel state feedback for multi-panel codebooks as described herein. For example, communication manager 1120 may include CSI report manager 1125, multi-panel transmitter manager 1130, or any combination thereof. Communication manager 1120 may be examples of aspects of communication manager 1020 as described herein. In some examples, communication manager 1120 or its various components may be configured to use receiver 1110, transmitter 1115, or both, or otherwise cooperate with the receiver, transmitter, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, communication manager 1120 may receive information from receiver 1110, transmit information to transmitter 1115, or be integrated in combination with receiver 1110, transmitter 1115, or both to acquire information, output information, or perform various other operations as described herein.

[0183] Communication manager 1120 can support wireless communication according to examples disclosed herein. CSI report manager 1125 is capable of, configured to, or operable to support components for receiving CSI from the UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for a network entity and a second PMI for a second antenna panel in a set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. Multi-panel transmission manager 1130 is capable of, configured to, or operable to support components for transmitting messages to the UE via the first and second antenna panels according to the CSI.

[0184] Figure 12A block diagram 1200 is shown of a communication manager 1220 supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure. The communication manager 1220 may be an example of a communication manager 1020, a communication manager 1120, or aspects thereof as described herein. The communication manager 1220 or its various components may be examples of parts for performing various aspects of near-field-based channel state feedback for a multi-panel codebook as described herein. For example, the communication manager 1220 may include a CSI report manager 1225, a multi-panel transmission manager 1230, a PMI manager 1235, a configuration manager 1240, a ULP manager 1245, a URP manager 1250, or any combination thereof. These components, or each of their components or sub-components (e.g., one or more processors, one or more memories), may communicate directly or indirectly with each other (e.g., via one or more buses), and such communication may include communication within the protocol layers of the protocol stack, communication associated with logical channels of the protocol stack (e.g., between protocol layers of the protocol stack, within devices, components, or virtualization components associated with network entity 105, between devices, components, or virtualization components associated with network entity 105), or any combination thereof.

[0185] Communication manager 1220 can support wireless communication according to examples disclosed herein. CSI report manager 1225 is capable of, configured to, or operable to support components for receiving CSI from the UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for a network entity and a second PMI for a second antenna panel in a set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. Multi-panel transmission manager 1230 is capable of, configured to, or operable to support components for transmitting messages to the UE via the first and second antenna panels according to the CSI.

[0186] In some examples, the PMI manager 1235 is capable of, configured to, or operable to support components for selecting a first PMI based on one or more antenna characteristics of the set of antenna panels. In some examples, the PMI manager 1235 is capable of, configured to, or operable to support components for selecting a second PMI based on one or more antenna characteristics of the set of antenna panels, the first PMI, and angle parameters.

[0187] In some examples, the configuration manager 1240 is capable of, configured to, or operable to support components for selecting angle parameters from a set of available angle parameters, wherein the set of available angle parameters is defined according to one or more multi-panel configurations associated with a set of antenna panels.

[0188] In some examples, the configuration manager 1240 is capable of, configured to, or able to operate to support a component for receiving an indication of a set of available angle parameters, wherein the selection is made according to the indication.

[0189] In some examples, CSI indicates the angle parameter as a second PMI.

[0190] In some examples, the angle parameter is also associated with the separation distance between the first antenna panel and the second antenna panel.

[0191] In some examples, the set of antenna panels includes four antenna panels configured in a uniform linear panel configuration.

[0192] In some examples, the ULP manager 1245 is capable of, configured to, or operable to support components for selecting a first PMI based on a first horizontal angle characteristic of the antenna panel set. In some examples, the ULP manager 1245 is capable of, configured to, or operable to support components for selecting a second PMI based on a second horizontal angle parameter of the antenna panel set and the first PMI. In some examples, the ULP manager 1245 is capable of, configured to, or operable to support components for selecting a third PMI for a third antenna panel based on a third horizontal angle parameter of the antenna panel set, the first PMI, and a first scaling of the angle parameter. In some examples, the ULP manager 1245 is capable of, configured to, or operable to support components for selecting a fourth PMI for a fourth antenna panel based on one or more antenna characteristics of the antenna panel set, the first PMI, and a second scaling of the angle parameter.

[0193] In some examples, the ULP manager 1245 is capable of, configured to, or operable to support components for selecting a first PMI based on a first horizontal angular characteristic and a first vertical angular characteristic of the antenna panel set. In some examples, the ULP manager 1245 is capable of, configured to, or operable to support components for selecting a second PMI based on a second horizontal angular characteristic, a first vertical angular characteristic, and the first PMI. In some examples, the ULP manager 1245 is capable of, configured to, or operable to support components for selecting a third PMI for a third antenna panel based on a first horizontal angular characteristic, a second vertical angular characteristic, and the first PMI. In some examples, the ULP manager 1245 is capable of, configured to, or operable to support components for selecting a fourth PMI for a fourth antenna panel based on a second horizontal angular characteristic, a second vertical angular characteristic, and the first PMI.

[0194] In some examples, the set of antenna panels includes four antenna panels configured in a uniform rectangular panel configuration.

[0195] In some examples, the set of antenna panels includes eight antenna panels on two sub-panels, with each sub-panel configured in a uniform rectangular panel configuration.

[0196] In some examples, the URP manager 1250 is capable of, configured to, or operable to support components for selecting a first PMI for a first antenna panel in a first sub-panel based on a first horizontal angle characteristic and a first vertical angle characteristic of the antenna panel set. In some examples, the URP manager 1250 is capable of, configured to, or operable to support components for selecting a second PMI for a second antenna panel in a first sub-panel based on a second horizontal angle characteristic, a first vertical angle characteristic, and the first PMI. In some examples, the URP manager 1250 is capable of, configured to, or operable to support components for selecting a third PMI for a third antenna panel in a first sub-panel based on a third horizontal angle characteristic, a first vertical angle characteristic, and the first PMI. In some examples, the URP manager 1250 is capable of, configured to, or operable to support components for selecting a fourth PMI for a fourth antenna panel in a first sub-panel based on a fourth horizontal angle characteristic, a first vertical angle characteristic, and the first PMI. In some examples, the URP manager 1250 is capable of, configured to, or operable to support components for selecting a fifth PMI for a fifth antenna panel in a second sub-panel based on a first horizontal angle characteristic and a second vertical angle characteristic of the antenna panel set. In some examples, the URP manager 1250 is capable of, configured to, or operable to support components for selecting a sixth PMI for a sixth antenna panel in a second sub-panel based on a second horizontal angle characteristic, a second vertical angle characteristic, and a fifth PMI. In some examples, the URP manager 1250 is capable of, configured to, or operable to support components for selecting a seventh PMI for a seventh antenna panel in a second sub-panel based on a third horizontal angle characteristic, a second vertical angle characteristic, and a fifth PMI. In some examples, the URP manager 1250 is capable of, configured to, or operable to support components for selecting an eighth PMI for an eighth antenna panel in a second sub-panel based on a fourth horizontal angle characteristic, a second vertical angle characteristic, and a fifth PMI.

[0197] Figure 13A diagram of a system 1300 including a device 1305 supporting near-field-based channel state feedback for a multi-panel codebook, according to one or more aspects of this disclosure, is shown. Device 1305 may be an example of device 1005, device 1105, or network entity 105 as described herein, or may include components thereof. Device 1305 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, and this communication may include communication via one or more wired interfaces, one or more wireless interfaces, or any combination thereof. Device 1305 may include components supporting output and acquisition of communication, such as a communication manager 1320, a transceiver 1310, an antenna 1315, at least one memory 1325, code 1330, and at least one processor 1335. These components may communicate electronically or otherwise (e.g., operative ground, communicative ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1340).

[0198] Transceiver 1310 may support bidirectional communication via a wired link, a wireless link, or both, as described herein. In some examples, transceiver 1310 may include a wired transceiver and be able to communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, transceiver 1310 may include a wireless transceiver and be able to communicate bidirectionally with another wireless transceiver. In some examples, device 1305 may include one or more antennas 1315 that may be able to transmit or receive wireless transmissions (e.g., concurrently). Transceiver 1310 may also include a modem for: modulating a signal; providing the modulated signal for transmission (e.g., by one or more antennas 1315, by a wired transmitter); receiving the modulated signal (e.g., from one or more antennas 1315, from a wired receiver); and demodulating the signal. In some embodiments, transceiver 1310 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1315 configured to support various receive or acquire operations, or one or more interfaces coupled to one or more antennas 1315 configured to support various transmit or output operations, or combinations thereof. In some embodiments, transceiver 1310 may include one or more processors or one or more memory components, or be configured to couple to such processors or memory components, which are operable to perform or support operations based on received or acquired information or signals, or generate information or other signals for transmission or other output, or any combination thereof. In some embodiments, transceiver 1310, or transceiver 1310 and one or more antennas 1315, or transceiver 1310 and one or more antennas 1315 and one or more processors or one or more memory components (e.g., at least one processor 1335, at least one memory 1325, or both), may be included in a chip or chip assembly mounted in device 1305. In some examples, transceiver 1310 may be operable to support communication via one or more communication links (e.g., communication link 125, backhaul communication link 120, midhaul communication link 162, and fronthaul communication link 168).

[0199] At least one memory 1325 may include RAM, ROM, or any combination thereof. At least one memory 1325 may store computer-readable, computer-executable code 1330 including instructions that, when executed by one or more processors of at least one processor 1335, cause device 1305 to perform the various functions described herein. Code 1330 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 1330 may not be directly executable by one of the processors of at least one processor 1335, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, at least one memory 1325 may contain a BIOS, etc., that controls basic hardware or software operation, such as interaction with peripheral components or devices. In some examples, at least one processor 1335 may include multiple processors, and at least one memory 1325 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, which may be configured individually or collectively to perform the various functions described herein (e.g., as part of a processing system).

[0200] At least one processor 1335 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, ASICs, CPUs, FPGAs, microcontrollers, programmable logic devices, discrete gate or transistor logic units, discrete hardware components, or any combination thereof). In some cases, at least one processor 1335 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into one or more processors in at least one processor 1335. At least one processor 1335 may be configured to execute computer-readable instructions stored in memory (e.g., one or more memories in at least one memory 1325) to cause device 1305 to perform various functions (e.g., functions or tasks supporting near-field-based channel state feedback for multi-panel codebooks). For example, device 1305 or components of device 1305 may include at least one processor 1335 and at least one memory 1325 coupled to one or more processors in at least one processor 1335, wherein at least one processor 1335 and at least one memory 1325 are configured to perform the various functions described herein. At least one processor 1335 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, virtual machine, or container instance) that can host functions (e.g., by executing code 1330) to perform the functions of device 1305. At least one processor 1335 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in device 1305 (such as within one or more memories in at least one memory 1325). In some examples, at least one processor 1335 may include multiple processors, and at least one memory 1325 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, which may be configured individually or collectively to perform the various functions described herein. In some examples, at least one processor 1335 may be a component of a processing system, which may refer to a system of machines (such as a series of machines), circuits (including, for example, one or both of processor circuitry (which may include at least one processor 1335) and memory circuitry (which may include at least one memory 1325)) or components that receive or acquire input and process the input to produce, generate, or acquire a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, at least one processor 1335 or a processing system including at least one processor 1335 may be configured, configured to, or operable to cause the device 1305 to perform one or more of the functions described herein.Furthermore, as described herein, “configured to,” “capable of being configured to,” and “capable of operating to” are used interchangeably and may be associated with the ability to perform one or more of the functions described herein when executing code stored in at least one memory 1325 or otherwise.

[0201] In some examples, bus 1340 may support communication at the protocol layer of the protocol stack (e.g., within a protocol layer). In some examples, bus 1340 may support communication associated with logical channels of the protocol stack (e.g., between protocol layers of the protocol stack), which may include communication performed within components of device 1305, or communication performed between different components of device 1305 that are co-addressable or may be located in different locations (e.g., where device 1305 may refer to a system in which one or more of communication manager 1320, transceiver 1310, at least one memory 1325, code 1330 and at least one processor 1335 may be located in one component of different components or partitioned between different components).

[0202] In some examples, the communication manager 1320 can manage (e.g., via one or more wired or wireless backhaul links) various aspects of communication with the core network 130. For example, the communication manager 1320 can manage the transfer of data communication between client devices such as one or more UEs 115. In some examples, the communication manager 1320 can manage communication with other network entities 105 and may include a controller or scheduler for coordinating other network entities 105 to control communication with UE 115. In some examples, the communication manager 1320 may support the X2 interface in LTE / LTE-A wireless communication network technology to provide communication between network entities 105.

[0203] Communication manager 1320 may support wireless communication according to examples disclosed herein. For example, communication manager 1320 may be capable of, configured to, or operable to support components for receiving a CSI from a UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for a network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. Communication manager 1320 may be capable of, configured to, or operable to support components for transmitting messages to the UE via the first and second antenna panels according to the CSI.

[0204] By including or configuring a communication manager 1320 according to an example as described herein, device 1305 can support techniques for more efficient use of communication resources and more effective pre-decoding, which can help improve user experience, increase throughput, and improve spectrum efficiency.

[0205] In some examples, the communication manager 1320 may be configured to use a transceiver 1310, one or more antennas 1315 (e.g., where applicable), or any combination thereof, or otherwise cooperate with the transceiver, the one or more antennas, or any combination thereof to perform various operations (e.g., receive, acquire, monitor, output, transmit). Although the communication manager 1320 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1320 may be supported or performed by the transceiver 1310, one or more processors in at least one processor 1335, one or more memories in at least one memory 1325, code 1330, or any combination thereof (e.g., by a processing system including at least a portion of at least one processor 1335, at least one memory 1325, code 1330, or any combination thereof). For example, code 1330 may include instructions that can be executed by one or more processors of at least one processor 1335 to cause device 1305 to perform various aspects of near-field-based channel state feedback for a multi-panel codebook as described herein, or at least one processor 1335 and at least one memory 1325 may otherwise be configured to perform or support such operations individually or jointly.

[0206] Figure 14 A flowchart illustrating a method 1400 for near-field-based channel state feedback for a multi-panel codebook, according to various aspects of this disclosure, is shown. Operation of method 1400 can be implemented by a UE or its components as described herein. For example, operation of method 1400 can be achieved by, as referenced... Figures 1 to 9 The UE 115 described herein performs the following: In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0207] At 1405, the method may include: sending a CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. The operation of block 1405 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1405 may be provided by reference to [reference needed]. Figure 8 The CSI Report Manager 825 described is executed.

[0208] At 1410, the method may include: receiving a message from a network entity according to the CSI. The operation of box 1410 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1410 may be derived from references... Figure 8 The multi-panel send manager 830 described is executed.

[0209] Figure 15 A flowchart illustrating a method 1500 for near-field-based channel state feedback for a multi-panel codebook, according to various aspects of this disclosure, is shown. Operation of method 1500 can be implemented by a UE or its components as described herein. For example, operation of method 1500 can be achieved by, as referenced... Figures 1 to 9 The UE 115 described herein performs the following: In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the described functions.

[0210] At 1505, the method may include: receiving an indication of a set of available angle parameters, wherein the angle parameters are selected from the set of available angle parameters. The operation of block 1505 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1505 may be provided by reference to [reference needed]. Figure 8 The configuration manager 835 described is executed.

[0211] At 1510, the method may include: sending a CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. The operation of block 1510 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1510 may be provided by reference to [reference needed]. Figure 8 The CSI Report Manager 825 described is executed.

[0212] At 1515, the method may include: receiving a message from a network entity according to the CSI. The operation of box 1515 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1515 may be derived from, as referenced... Figure 8 The multi-panel send manager 830 described is executed.

[0213] Figure 16 A flowchart illustrating a method 1600 for near-field-based channel state feedback for a multi-panel codebook, according to various aspects of this disclosure, is shown. Operation of method 1600 may be implemented by a network entity or its components as described herein. For example, operation of method 1600 may be implemented by, as referenced... Figures 1 to 5 as well as Figures 10 to 13 The described network entity performs the functions. In some examples, the network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform aspects of the described functions.

[0214] At 1605, the method may include: receiving a CSI from the UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for a network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. The operation of block 1605 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1605 may be provided by reference to [reference needed]. Figure 12 The described CSI report manager 1225 is executed.

[0215] At 1610, the method may include: sending a message to the UE via a first antenna panel and a second antenna panel according to the CSI. The operation of block 1610 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1610 may be derived from references... Figure 12 The multi-panel send manager 1230 described is executed.

[0216] Figure 17 A flowchart illustrating a method 1700 for near-field-based channel state feedback for a multi-panel codebook, according to various aspects of this disclosure, is shown. Operation of method 1700 may be implemented by a network entity or its components as described herein. For example, operation of method 1700 may be implemented by, as referenced... Figures 1 to 5 as well as Figures 10 to 13 The described network entity performs the functions. In some examples, the network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform aspects of the described functions.

[0217] At 1705, the method may include: receiving a CSI from the UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for a network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. The operation of block 1705 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1705 may be provided by reference to [reference needed]. Figure 12 The described CSI report manager 1225 is executed.

[0218] At 1710, the method may include: selecting a first PMI based on one or more antenna characteristics of the set of antenna panels. The operation of block 1710 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1710 may be derived from references... Figure 12 The described PMI manager 1235 is executed.

[0219] At 1715, the method may include: selecting a second PMI based on one or more antenna characteristics of the antenna panel set, a first PMI, and an angle parameter. The operation of block 1715 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1715 may be derived from references... Figure 12 The described PMI manager 1235 is executed.

[0220] At 1720, the method may include: sending a message to the UE via a first antenna panel and a second antenna panel according to the CSI. The operation of block 1720 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1720 may be provided by reference to [reference needed]. Figure 12 The multi-panel send manager 1230 described is executed.

[0221] Figure 18 A flowchart illustrating a method 1800 for near-field-based channel state feedback for a multi-panel codebook, according to various aspects of this disclosure, is shown. Operation of method 1800 may be implemented by a network entity or its components as described herein. For example, operation of method 1800 may be implemented by, as referenced... Figures 1 to 5 as well as Figures 10 to 13 The described network entity performs the functions. In some examples, the network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform aspects of the described functions.

[0222] At 1805, the method may include: receiving a CSI from the UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for a network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with the angular separation between the first and second antenna panels relative to the UE. The operation of block 1805 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1805 may be provided by reference to [reference needed]. Figure 12 The described CSI report manager 1225 is executed.

[0223] At 1810, the method may include: selecting an angle parameter from a set of available angle parameters, wherein the set of available angle parameters is defined according to one or more multi-panel configurations associated with a set of antenna panels. The operation of block 1810 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1810 may be provided by reference to [reference needed]. Figure 12 The configuration manager 1240 described is executed.

[0224] At 1815, the method may include: sending a message to the UE via a first antenna panel and a second antenna panel according to the CSI. The operation of block 1815 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1815 may be derived from references... Figure 12 The multi-panel send manager 1230 described is executed.

[0225] The following provides an overview of the various aspects of this disclosure: Aspect 1: A method for wireless communication at a UE, the method comprising: sending a CSI to a network entity, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels of the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with an angular separation between the first antenna panel and the second antenna panel relative to the UE; and receiving a message from the network entity according to the CSI.

[0226] Aspect 2: According to the method of aspect 1, wherein the CSI indicates the angle parameter as the second PMI.

[0227] Aspect 3: The method according to any one of aspects 1 to 2, the method further comprising: receiving an indication of a set of available angle parameters, wherein the angle parameters are selected from the set of available angle parameters.

[0228] Aspect 4: The method according to any one of Aspects 1 to 3, wherein the angle parameter is further associated with the separation distance between the first antenna panel and the second antenna panel.

[0229] Aspect 5: A method for wireless communication at a network entity, the method comprising: receiving a CSI from a UE, wherein the CSI indicates a first PMI for a first antenna panel in a set of antenna panels for the network entity and a second PMI for a second antenna panel in the set of antenna panels, and wherein the second PMI is offset from the first PMI according to an angle parameter associated with an angular separation between the first antenna panel and the second antenna panel relative to the UE; and transmitting a message to the UE via the first antenna panel and the second antenna panel according to the CSI.

[0230] Aspect 6: The method according to aspect 5, the method further comprising: selecting the first PMI based on one or more antenna characteristics of the set of antenna panels; and selecting the second PMI based on the one or more antenna characteristics of the set of antenna panels, the first PMI and the angle parameter.

[0231] Aspect 7: The method according to any one of Aspects 5 to 6, the method further comprising: selecting the angle parameter from a set of available angle parameters, wherein the set of available angle parameters is defined according to one or more multi-panel configurations associated with the set of antenna panels.

[0232] Aspect 8: The method according to aspect 7, the method further comprising: receiving an indication of the set of available angle parameters, wherein the selection is made according to the indication.

[0233] Aspect 9: The method according to any one of Aspects 5 to 8, wherein the CSI indicates the angle parameter as the second PMI.

[0234] Aspect 10: The method according to any one of Aspects 5 to 9, wherein the angle parameter is further associated with the separation distance between the first antenna panel and the second antenna panel.

[0235] Aspect 11: The method according to any one of Aspects 5 to 10, wherein the set of antenna panels comprises four antenna panels configured in a uniform linear panel configuration.

[0236] Aspect 12: The method according to aspect 11, the method further comprising: selecting a first PMI based on a first horizontal angle characteristic of the set of antenna panels; selecting a second PMI based on a second horizontal angle parameter of the set of antenna panels and the first PMI; selecting a third PMI for a third antenna panel based on a third horizontal angle parameter of the set of antenna panels, the first PMI and a first scaling of the angle parameter; and selecting a fourth PMI for a fourth antenna panel based on one or more antenna characteristics of the set of antenna panels, the first PMI and a second scaling of the angle parameter.

[0237] Aspect 13: The method according to any one of Aspects 11 to 12, the method further comprising: selecting the first PMI based on a first horizontal angle characteristic and a first vertical angle characteristic of the set of antenna panels; selecting the second PMI based on a second horizontal angle characteristic, the first vertical angle characteristic and the first PMI; selecting a third PMI for a third antenna panel based on the first horizontal angle characteristic, the second vertical angle characteristic and the first PMI; and selecting a fourth PMI for a fourth antenna panel based on the second horizontal angle characteristic, the second vertical angle characteristic and the first PMI.

[0238] Aspect 14: The method according to any one of Aspects 5 to 13, wherein the set of antenna panels comprises four antenna panels configured in a uniform rectangular panel configuration.

[0239] Aspect 15: The method according to any one of Aspects 5 to 14, wherein the set of antenna panels comprises eight antenna panels on two sub-panels, wherein each sub-panel is configured in a uniform rectangular panel configuration.

[0240] Aspect 16: The method according to aspect 15, the method further comprising: selecting a first PMI for a first antenna panel in a first sub-panel based on a first horizontal angle characteristic and a first vertical angle characteristic of the antenna panel set; selecting a second PMI for a second antenna panel in the first sub-panel based on a second horizontal angle characteristic, the first vertical angle characteristic, and the first PMI; selecting a third PMI for a third antenna panel in the first sub-panel based on a third horizontal angle characteristic, the first vertical angle characteristic, and the first PMI; and selecting a fourth PMI for a fourth antenna panel in the first sub-panel based on a fourth horizontal angle characteristic, the first vertical angle characteristic, and the first PMI. The antenna panel selects a fourth PMI; the fifth PMI is selected for the fifth antenna panel in the second sub-panel based on the first horizontal angle characteristic and the second vertical angle characteristic of the antenna panel set; the sixth PMI is selected for the sixth antenna panel in the second sub-panel based on the second horizontal angle characteristic, the second vertical angle characteristic and the fifth PMI; the seventh PMI is selected for the seventh antenna panel in the second sub-panel based on the third horizontal angle characteristic, the second vertical angle characteristic and the fifth PMI; and the eighth PMI is selected for the eighth antenna panel in the second sub-panel based on the fourth horizontal angle characteristic, the second vertical angle characteristic and the fifth PMI.

[0241] Aspect 17: A UE for wireless communication, the UE comprising: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories and capable of operating individually or jointly to execute the code to cause the UE to perform a method according to any one of Aspects 1 to 4.

[0242] Aspect 18: A UE for wireless communication, the UE comprising at least one component for performing a method according to any one of aspects 1 to 4.

[0243] Aspect 19: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by one or more processors to perform the method according to any one of Aspects 1 to 4.

[0244] Aspect 20: A network entity for wireless communication, the network entity comprising: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories and capable of operating individually or jointly to execute the code to cause the network entity to perform a method according to any one of Aspects 5 to 16.

[0245] Aspect 21: A network entity for wireless communication, the network entity comprising at least one component for performing the method according to any one of aspects 5 to 16.

[0246] Aspect 22: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by one or more processors to perform the method according to any one of aspects 5 to 16.

[0247] It should be noted that the methods described herein describe possible specific implementations, and the operations and steps can be rearranged or otherwise modified, and other specific implementations are also possible. Furthermore, aspects from two or more of these methods can be combined.

[0248] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein are also applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described are applicable to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0249] The information and signals described herein can be represented using any of a variety of different techniques and skills. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof.

[0250] The various exemplary blocks and components described herein can be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic unit, discrete hardware component, or any combination thereof, designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in alternative embodiments, a processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration). Any function or operation described herein that can be performed by a processor may be performed by multiple processors capable of performing the described functions or operations individually or jointly.

[0251] The functions described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. When implemented using software executed by a processor, the functions can be stored as one or more instructions or code on a computer-readable medium or transmitted using one or more instructions or code on 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 can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features implementing the functions can also be physically located in various locations, including various portions distributed such that the functions are implemented in different physical locations.

[0252] Computer-readable media includes both non-transitory computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transitory storage media can be any available medium accessible by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compressed optical disc (CD) ROM or other optical disc storage devices, magnetic disk storage devices or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code components in the form of instructions or data structures, and accessible by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Furthermore, any connection is appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital multifunction discs (DVDs), floppy disks, and Blu-ray discs. Disks can magnetically reproduce data, and optical discs can optically reproduce data using lasers. Combinations of the above are also included within the scope of computer-readable media. Any function or operation described herein that can be performed by memory can be performed by multiple memories capable of performing the described function or operation individually or jointly.

[0253] As used herein, the word "or" in a list of items (e.g., a list of items accompanied by phrases such as "at least one of" or "one or more of") in the claims indicates an inclusive list, such that a list of at least one of, for example, 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). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0254] As used herein, including in claims, the article “a” preceding a noun is open-ended and is understood to refer to “at least one” or “one or more” of those nouns. Therefore, the terms “a,” “at least one,” “one or more,” and “at least one of one or more” are interchangeable. For example, where a claim enumerates “components” performing one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “component” having a characteristic or performing a function may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent references to a component introduced with the article “a” using the terms “the” or “the” can refer to any or all of the one or more components. For example, a component introduced with the article “a” can be understood to mean “one or more components,” and subsequent reference to “the component” in a claim can be understood as equivalent to referring to “at least one of the one or more components.” Similarly, subsequent references to a component introduced with the terms “the” or “the” as “one or more components” can refer to any or all of those one or more components. For example, reference to "the one or more components" in the subsequent claims can be understood as equivalent to reference to "at least one of the one or more components".

[0255] The term "determine" encompasses a variety of actions, and therefore, "determine" can include calculation, computation, processing, derivation, investigation, searching (such as by searching in a table, database, or other data structure), ascertainment, and similar actions. Furthermore, "determine" can include receiving (e.g., receiving information), accessing (e.g., accessing data stored in memory), and so on. Moreover, "determine" can include parsing, obtaining, selecting, choosing, creating, and other similar actions.

[0256] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by adding a dash after the reference numeral and a second reference numeral to differentiate between similar components. If only the first reference numeral is used in the description, the description can be applied to any of the similar components having the same first reference numeral, regardless of the second reference numeral or other subsequent reference numerals.

[0257] The description herein, illustrated with reference to the accompanying drawings, describes an example configuration and does not represent all achievable examples or those within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," not "preferred" or "advantageous over other examples." The detailed description includes specific details used to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concept of the described examples.

[0258] The description herein is provided to enable those skilled in the art to implement or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of this disclosure. Therefore, this 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. A user equipment (UE), the user equipment (UE) comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, coupled to one or more memories and capable of operating individually or jointly to execute the code to enable the UE: Send channel state information to a network entity, wherein the channel state information indicates a first pre-decoding matrix index of a first antenna panel in a set of antenna panels for the network entity and a second pre-decoding matrix index of a second antenna panel in the set of antenna panels, and wherein the second pre-decoding matrix index is offset from the first pre-decoding matrix index according to an angle parameter associated with the angular separation between the first antenna panel and the second antenna panel relative to the UE. as well as Messages are received from the network entity based on the channel state information.

2. The UE according to claim 1, wherein the channel state information indicates the angle parameter as the index of the second pre-decoding matrix.

3. The UE of claim 1, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the UE to: Receive an indication of a set of available angle parameters, wherein the angle parameters are selected from the set of available angle parameters.

4. The UE of claim 1, wherein the angle parameter is further associated with the separation distance between the first antenna panel and the second antenna panel.

5. A network entity, the network entity comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, coupled to one or more memories and capable of operating individually or jointly to execute the code to enable the network entity: Channel state information is received from a user equipment (UE), wherein the channel state information indicates a first pre-decoding matrix index of a first antenna panel in a set of antenna panels for the network entity and a second pre-decoding matrix index of a second antenna panel in the set of antenna panels, and wherein the second pre-decoding matrix index is offset from the first pre-decoding matrix index according to an angle parameter associated with the angular separation between the first antenna panel and the second antenna panel relative to the UE. as well as Messages are sent to the UE via the first antenna panel and the second antenna panel based on the channel state information.

6. The network entity of claim 5, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the network entity to: The first pre-decoding matrix index is selected based on one or more antenna characteristics of the antenna panel set; and The second pre-decoding matrix index is selected based on one or more antenna characteristics of the antenna panel set, the first pre-decoding matrix index, and the angle parameter.

7. The network entity of claim 5, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the network entity to: The angle parameter is selected from a set of available angle parameters, wherein the set of available angle parameters is defined according to one or more multi-panel configurations associated with the set of antenna panels.

8. The network entity of claim 7, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the network entity to: Receive an indication of the set of available angle parameters, wherein the selection is made according to the indication.

9. The network entity of claim 5, wherein the channel state information indicates the angle parameter as the index of the second pre-decoding matrix.

10. The network entity of claim 5, wherein the angle parameter is further associated with the separation distance between the first antenna panel and the second antenna panel.

11. The network entity of claim 5, wherein the set of antenna panels comprises four antenna panels configured in a uniform linear panel configuration.

12. The network entity of claim 11, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the network entity to: The first pre-decoding matrix index is selected based on the first horizontal angle characteristic of the antenna panel set; The second pre-decoding matrix index is selected based on the second horizontal angle parameter of the antenna panel set and the first pre-decoding matrix index; A third pre-decoding matrix index for the third antenna panel is selected based on a third horizontal angle parameter of the antenna panel set, a first pre-decoding matrix index, and a first scaling of the angle parameter; and The fourth pre-decoding matrix index for the fourth antenna panel is selected based on one or more antenna characteristics of the set of antenna panels, the first pre-decoding matrix index, and the second scaling of the angle parameter.

13. The network entity of claim 11, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the network entity to: The first pre-decoding matrix index is selected based on the first horizontal angle characteristic and the first vertical angle characteristic of the antenna panel set. The second pre-decoding matrix index is selected based on the second horizontal angle characteristic, the first vertical angle characteristic, and the first pre-decoding matrix index. The third pre-decoding matrix index for the third antenna panel is selected based on the first horizontal angle characteristic, the second vertical angle characteristic, and the first pre-decoding matrix index; and The fourth pre-decoding matrix index for the fourth antenna panel is selected based on the second horizontal angle characteristic, the second vertical angle characteristic, and the first pre-decoding matrix index.

14. The network entity of claim 5, wherein the set of antenna panels comprises four antenna panels configured in a uniform rectangular panel configuration.

15. The network entity of claim 5, wherein the set of antenna panels comprises eight antenna panels on two sub-panels, wherein each sub-panel is configured in a uniform rectangular panel configuration.

16. The network entity of claim 15, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the network entity to: The first pre-decoding matrix index is selected for the first antenna panel in the first sub-panel based on the first horizontal angle characteristic and the first vertical angle characteristic of the antenna panel set. The second pre-decoding matrix index is selected for the second antenna panel in the first sub-panel based on the second horizontal angle characteristic, the first vertical angle characteristic, and the first pre-decoding matrix index. The third pre-decoding matrix index is selected for the third antenna panel in the first sub-panel based on the third horizontal angle characteristic, the first vertical angle characteristic, and the first pre-decoding matrix index. The fourth pre-decoding matrix index is selected for the fourth antenna panel in the first sub-panel based on the fourth horizontal angle characteristic, the first vertical angle characteristic, and the first pre-decoding matrix index. The fifth pre-decoding matrix index is selected for the fifth antenna panel in the second sub-panel based on the first horizontal angle characteristic and the second vertical angle characteristic of the antenna panel set. The sixth pre-decoding matrix index is selected for the sixth antenna panel in the second sub-panel based on the second horizontal angle characteristic, the second vertical angle characteristic, and the fifth pre-decoding matrix index. The seventh pre-decoding matrix index is selected for the seventh antenna panel in the second sub-panel based on the third horizontal angle characteristic, the second vertical angle characteristic, and the fifth pre-decoding matrix index; and The eighth pre-decoding matrix index is selected for the eighth antenna panel in the second sub-panel based on the fourth horizontal angle characteristic, the second vertical angle characteristic, and the fifth pre-decoding matrix index.

17. A method for conducting wireless communication at a user equipment (UE), the method comprising: Send channel state information to a network entity, wherein the channel state information indicates a first pre-decoding matrix index of a first antenna panel in a set of antenna panels for the network entity and a second pre-decoding matrix index of a second antenna panel in the set of antenna panels, and wherein the second pre-decoding matrix index is offset from the first pre-decoding matrix index according to an angle parameter associated with the angular separation between the first antenna panel and the second antenna panel relative to the UE. as well as Messages are received from the network entity based on the channel state information.

18. The method of claim 17, wherein the channel state information indicates the angle parameter as the index of the second pre-decoding matrix.

19. The method of claim 17, further comprising: Receive an indication of a set of available angle parameters, wherein the angle parameters are selected from the set of available angle parameters.

20. The method of claim 17, wherein the angle parameter is further associated with the separation distance between the first antenna panel and the second antenna panel.

21. A method for conducting wireless communication at a network entity, the method comprising: Channel state information is received from a user equipment (UE), wherein the channel state information indicates a first pre-decoding matrix index of a first antenna panel in a set of antenna panels for the network entity and a second pre-decoding matrix index of a second antenna panel in the set of antenna panels, and wherein the second pre-decoding matrix index is offset from the first pre-decoding matrix index according to an angle parameter associated with the angular separation between the first antenna panel and the second antenna panel relative to the UE. as well as Messages are sent to the UE via the first antenna panel and the second antenna panel based on the channel state information.

22. The method according to claim 21, further comprising: The first pre-decoding matrix index is selected based on one or more antenna characteristics of the antenna panel set; as well as The second pre-decoding matrix index is selected based on one or more antenna characteristics of the antenna panel set, the first pre-decoding matrix index, and the angle parameter.

23. The method according to claim 21, further comprising: The angle parameter is selected from a set of available angle parameters, wherein the set of available angle parameters is defined according to one or more multi-panel configurations associated with the set of antenna panels.

24. The method according to claim 23, further comprising: Receive an indication of the set of available angle parameters, wherein the selection is made according to the indication.

25. The method of claim 21, wherein the channel state information indicates the angle parameter as the index of the second pre-decoding matrix.

26. The method of claim 21, wherein the angle parameter is further associated with the separation distance between the first antenna panel and the second antenna panel.

27. The method of claim 21, wherein the set of antenna panels comprises four antenna panels configured in a uniform linear panel configuration.

28. The method of claim 27, further comprising: The first pre-decoding matrix index is selected based on the first horizontal angle characteristic of the antenna panel set; The second pre-decoding matrix index is selected based on the second horizontal angle parameter of the antenna panel set and the first pre-decoding matrix index; The third pre-decoding matrix index for the third antenna panel is selected based on the third horizontal angle parameter of the set of antenna panels, the first pre-decoding matrix index, and the first scaling of the angle parameter. as well as The fourth pre-decoding matrix index for the fourth antenna panel is selected based on one or more antenna characteristics of the set of antenna panels, the first pre-decoding matrix index, and the second scaling of the angle parameter.

29. The method of claim 27, further comprising: The first pre-decoding matrix index is selected based on the first horizontal angle characteristic and the first vertical angle characteristic of the antenna panel set. The second pre-decoding matrix index is selected based on the second horizontal angle characteristic, the first vertical angle characteristic, and the first pre-decoding matrix index. The third pre-decoding matrix index for the third antenna panel is selected based on the first horizontal angle characteristic, the second vertical angle characteristic, and the first pre-decoding matrix index. as well as The fourth pre-decoding matrix index for the fourth antenna panel is selected based on the second horizontal angle characteristic, the second vertical angle characteristic, and the first pre-decoding matrix index.

30. The method of claim 21, wherein the set of antenna panels comprises four antenna panels configured in a uniform rectangular panel configuration.

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