Hybrid analog and digital channel state reporting
The hybrid analog and digital CSI feedback method addresses the challenge of high overhead in FDD systems by combining quantized and unquantized feedback, improving accuracy and reducing latency in wireless communications systems.
Patent Information
- Application Number
- PCT/CN2024/113541
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2026-02-26
AI Technical Summary
Wireless communications systems face challenges in achieving high-resolution channel state information (CSI) reporting with minimal signaling overhead, particularly in frequency-domain duplexing (FDD) systems, where explicit feedback increases overhead and accuracy is limited by quantized CSI feedback.
A hybrid analog and digital CSI feedback approach is implemented, combining quantized and unquantized CSI feedback on the same uplink shared channel, allowing for improved accuracy and reduced signaling overhead by multiplexing eigenvalues and eigenvectors without quantization.
This approach enhances CSI reporting accuracy, reduces signaling overhead, and minimizes latency by incorporating unquantized feedback, which does not require quantization or channel coding, thereby optimizing communication efficiency.
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Figure CN2024113541_26022026_PF_FP_ABST
Abstract
Description
HYBRID ANALOG AND DIGITAL CHANNEL STATE REPORTING
[0001] FIELD OF TECHNOLOGY
[0002] The following relates to wireless communications, including hybrid analog and digital channel state reporting.BACKGROUND
[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the 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-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 spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .SUMMARY
[0004] The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein.
[0005] A method for wireless communications by a user equipment (UE) is described. The method may include receiving one or more signals for measurement by the UE, generating, based on measurement, by the UE, of the one or more signals, channel state information (CSI) associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel, and transmitting an uplink shared channel including a CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules.
[0006] A UE for wireless communications is described. The UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the UE to receive one or more signals for measurement by the UE, generate, based on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel, and transmit an uplink shared channel including a CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules.
[0007] Another UE for wireless communications is described. The UE may include means for receiving one or more signals for measurement by the UE, means for generating, based on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel, and means for transmitting an uplink shared channel including a CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules.
[0008] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to receive one or more signals for measurement by the UE, generate, based on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel, and transmit an uplink shared channel including a CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules.
[0009] Some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from a network entity, an indication of a quantity of the second set of symbols allocated for the unquantized CSI feedback.
[0010] Some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining, based on a quantity of unquantized channel coefficients associated with the unquantized CSI feedback and a coding offset configured for the unquantized CSI feedback, a quantity of the second set of symbols allocated for the unquantized CSI feedback.
[0011] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the quantized CSI feedback and the unquantized CSI feedback may be time-domain multiplexed in the CSI report.
[0012] Some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from a network entity, an indication of a location, within the uplink shared channel, of the second set of symbols allocated for the unquantized CSI feedback.
[0013] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, between a subset of the first set of symbols that includes a first part of the quantized CSI feedback and a subset of the first set of symbols that includes a second part of the quantized CSI feedback, between a subset of the first set of symbols that includes a second part of the quantized CSI feedback and a set of symbols that includes scheduled uplink data, in a last set of symbols that follows a set of symbols that includes scheduled uplink data, and between a configurable gap that follows a subset of the first set of symbols that include a first part of the quantized CSI feedback and a subset of the first set of symbols that include at least a first portion of a second part of the quantized CSI feedback.
[0014] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the configurable gap includes a subset of the first set of symbols that include at least a second portion of the second part of the quantized CSI feedback.
[0015] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the first part of the quantized CSI feedback includes information indicating a quantity of unquantized channel coefficients associated with the unquantized CSI feedback and the second part of the quantized CSI feedback includes information indicating a delay tap location and a spatial domain / frequency domain (SD / FD) basis associated with the unquantized channel coefficients.
[0016] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the unquantized CSI feedback may be associated with a same priority level as the quantized CSI feedback and the priority level may be based on a type of the CSI report, a serving cell index, a CSI report configuration ID, or a combination thereof.
[0017] Some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for partitioning, based on a priority function, unquantized channel coefficients associated with the unquantized CSI feedback into two or more groups of unquantized CSI feedback.
[0018] Some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving an indication of a configured maximum quantity of symbols scheduled for the unquantized CSI feedback, determining, based on a quantity of the unquantized channel coefficients associated with the unquantized CSI feedback, a quantity of symbols to be allocated for the unquantized CSI feedback, and omitting, from the CSI report and based on priority levels associated with the two or more groups of unquantized CSI feedback, at least one group of the two or more groups of unquantized CSI feedback based on the quantity of symbols to be allocated for the unquantized CSI feedback being greater than the configured maximum quantity of symbols scheduled for the unquantized CSI feedback.
[0019] Some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for omitting additional groups of the two or more groups of unquantized CSI feedback until the quantity of symbols to be allocated for the unquantized CSI feedback may be less than or equal to the configured maximum quantity of symbols scheduled for the unquantized CSI feedback.
[0020] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, packing, prior to transmission of the uplink shared channel including the CSI report and based on a packing order, channel coefficients associated with the unquantized CSI feedback.
[0021] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the packing order may be based on a priority function of the channel coefficients or may be based on a natural order followed by a random interleaver.
[0022] In some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein, the one or more CSI reporting rules include one or more priority rules, omission rules, or both.
[0023] Some examples of the method, user equipment (UEs) , and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for generating the CSI report using one or more CSI processing units, where the CSI report includes the unquantized CSI feedback, and where a quantity of the one or more CSI processing units may be based on a quantity of CSI reference signal ports associated with the one or more signals.
[0024] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that the relative dimensions of the following figures may not be drawn to scale.BRIEF DESCRIPTION OF THE DRAWINGS
[0025] FIG. 1 shows an example of a wireless communications system that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure.
[0026] FIG. 2 shows an example of a portion of a wireless communications system that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure.
[0027] FIG. 3 shows examples of channel state information (CSI) report configurations that support hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure.
[0028] FIG. 4 shows an example of a priority function that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure.
[0029] FIG. 5 shows examples of packing order processes that support hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure.
[0030] FIG. 6 shows an example of a process flow that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure.
[0031] FIGs. 7 and 8 show block diagrams of devices that support hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure.
[0032] FIG. 9 shows a block diagram of a communications manager that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure.
[0033] FIG. 10 shows a diagram of a system including a device that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure.
[0034] FIGs. 11 through 13 show flowcharts illustrating methods that support hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0035] Some wireless communications systems may utilize time-domain duplexing (TDD) to manage the transmission and reception of data from a network entity, such as a base station, to a user equipment (UE) . The TDD method may enable the network entity and the UE to utilize the same frequency band, at different times, for both transmitting and receiving data between the devices. To ensure reliable and efficient communication between the UE and the network entity, one or more communications channels (e.g., an uplink channel and a downlink channel) used by the UE and network entity may be measured to determine channel conditions, a quality of transmitted or received signals, channel impairments, and the like. In communications systems that utilize TDD, because the uplink and downlink channels operate on the same frequency band, channel characteristics of the uplink and downlink channels may be the same. The reciprocal nature of the uplink and the downlink channels may, as a result, allow the network entity to estimate the downlink channel by measuring the uplink channel, with the assumption that the channel characteristics are likely the same in both directions. This channel reciprocity may allow for high resolution CSI at network entity and low signaling overhead.
[0036] However, some wireless communications systems utilize frequency-domain duplexing (FDD) to manage the transmission and reception of data from a network entity to a UE. The FDD method may enable the network entity and the UE to utilize different frequency bands, in some cases during overlapping times, for transmitting and receiving data between the devices. For these systems, channel reciprocity may not be utilized for channel measurement due to the use of different frequency bands for downlink and uplink transmissions. Instead, in some cases, systems that utilize FDD may perform channel measurements based on explicit feedback. With explicit feedback, the UE may directly report or feedback CSI to the network entity. In some cases, the UE may quantize the CSI and send the quantized feedback to the network entity as digital feedback data. Such quantized feedback may have a high degree of accuracy, but may be associated with increased signaling overhead relative to utilizing implicit feedback techniques, such as channel reciprocity.
[0037] In accordance with aspects described herein, in order to realize the benefits of explicit feedback while minimizing signaling overhead, the UE may send hybrid CSI feedback to the network entity. The hybrid CSI feedback may include both quantized (e.g., digital) and unquantized (e.g., analog) CSI feedback. For instance, the UE may multiplex quantized (e.g., digital) and unquantized (e.g., analog) CSI feedback on the same uplink shared channel and may report downlink channel estimates including eigenvalues and eigenvector using a quantized or unquantized feedback approach. In some cases, the accuracy of the unquantized feedback may outperform the quantized feedback for explicit channel feedback. Further, in some cases, the quantized scheme may be limited by a quantity of bits (e.g., quantization / resolution) . For instance, to achieve high resolution CSI at a high signal-noise ratio (SNR) with the quantized scheme, not only are more non-zero coefficients reported, but a quantization level may also be increased, e.g., 7 bits per coefficient to 12–14 bits per coefficient, which may result in an increase in feedback overhead (e.g., from several hundred bits to several thousand bits) . On the other hand, with the unquantized scheme, time / domain channel coefficients across transmission / reception antenna pair and delay taps (e.g., non-zero tap channel coefficient) may be treated as a modulated symbol and may be directly mapped to the uplink channel without quantization or channel coding. Further, with the unquantized scheme, the quantity of active delay taps for reporting may be adapted according to the SNR for reducing overhead. Accordingly, by utilizing a hybrid feedback approach for explicit CSI feedback, the inclusion of unquantized CSI in the combined CSI feedback may allow for an improved accuracy in CSI reporting, reduced signaling overhead relative to the quantized CSI feedback alone, and reduced latency due to the unquantized CSI feedback not requiring quantization and channel coding.
[0038] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to hybrid analog and digital channel state reporting.
[0039] FIG. 1 shows an example of a wireless communications system 100 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more devices, such as one or more network devices (e.g., network entities 105) , one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0040] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via communication link (s) 125 (e.g., a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish the communication link (s) 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
[0041] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices in the wireless communications system 100 (e.g., other wireless communication devices, including UEs 115 or network entities 105) , as shown in FIG. 1.
[0042] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a 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, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a 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 a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.
[0043] In some examples, network entities 105 may communicate with a core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via backhaul communication link (s) 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via backhaul communication link (s) 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via the core network 130) . In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication link (s) 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) or one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
[0044] One or more of the network entities 105 or network equipment described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within one network entity (e.g., a network entity 105 or a single RAN node, such as a base station 140) .
[0045] In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among multiple network entities (e.g., network entities 105) , such as an integrated access and 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, a network entity 105 may include one or more of a central unit (CU) , such as a CU 160, a distributed unit (DU) , such as a DU 165, a radio unit (RU) , such as an RU 170, a RAN Intelligent Controller (RIC) , such as an RIC 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, such as an SMO system 180, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations) . In some examples, one or more of the network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0046] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, or any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaptation protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 (e.g., one or more CUs) may be connected to a DU 165 (e.g., one or more DUs) or an RU 170 (e.g., one or more RUs) , or some combination thereof, and the DUs 165, RUs 170, or both may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or multiple different RUs, such as an RU 170) . In some cases, a functional split between a CU 160 and a DU 165 or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to a DU 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to an RU 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities (e.g., one or more of the network entities 105) that are in communication via such communication links.
[0047] In some wireless communications systems (e.g., the wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) . In some cases, in an IAB network, one or more of the network entities 105 (e.g., network entities 105 or IAB node (s) 104) may be partially controlled by each other. The IAB node (s) 104 may be referred to as a donor entity or an IAB donor. A DU 165 or an RU 170 may be partially controlled by a CU 160 associated with a network entity 105 or base station 140 (such as a donor network entity or a donor base station) . The one or more donor entities (e.g., IAB donors) may be in communication with one or more additional devices (e.g., IAB node (s) 104) via supported access and backhaul links (e.g., backhaul communication link (s) 120) . IAB node (s) 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by one or more DUs (e.g., DUs 165) of a coupled IAB donor. An IAB-MT may be equipped with an independent set of antennas for relay of communications with UEs 115 or may share the same antennas (e.g., of an RU 170) of IAB node (s) 104 used for access via the DU 165 of the IAB node (s) 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB node (s) 104 may include one or more DUs (e.g., DUs 165) that support communication links with additional entities (e.g., IAB node (s) 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., the IAB node (s) 104 or components of the IAB node (s) 104) may be configured to operate according to the techniques described herein.
[0048] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support test as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., components such as an IAB node, a DU 165, a CU 160, an RU 170, an RIC 175, an SMO system 180) .
[0049] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, vehicles, or meters, among other examples.
[0050] The UEs 115 described herein may be able to communicate with various types of devices, such as UEs 115 that may sometimes operate as relays, as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
[0051] The UEs 115 and the network entities 105 may wirelessly communicate with one another via the communication link (s) 125 (e.g., one or more access links) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined PHY layer structure for supporting the communication link (s) 125. For example, a carrier used for the communication link (s) 125 may include a portion of an RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more PHY layer channels for a given RAT (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each PHY layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network entity 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities, such as one or more of the network entities 105) .
[0052] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) . In a system employing MCM techniques, a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) , such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
[0053] The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of Ts=1 / (Δfmax·Nf) seconds, for which Δfmax may represent a supported subcarrier spacing, and Nf may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
[0054] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems, such as the wireless communications system 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0055] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
[0056] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to UEs 115 (e.g., one or more UEs) or may include UE-specific search space sets for sending control information to a UE 115 (e.g., a specific UE) .
[0057] In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area, such as the coverage area 110. In some examples, coverage areas 110 (e.g., different coverage areas) associated with different technologies may overlap, but the coverage areas 110 (e.g., different coverage areas) may be supported by the same network entity (e.g., a network entity 105) . In some other examples, overlapping coverage areas, such as a coverage area 110, associated with different technologies may be supported by different network entities (e.g., the network entities 105) . The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 support communications for coverage areas 110 (e.g., different coverage areas) using the same or different RATs.
[0058] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
[0059] In some examples, a UE 115 may be configured to support communicating directly with other UEs (e.g., one or more of the UEs 115) via a device-to-device (D2D) communication link, such as a D2D communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to one or more of the UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
[0060] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
[0061] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from 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 the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than one hundred kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
[0062] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) RAT, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0063] A network entity 105 (e.g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
[0064] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0065] The UEs 115 and the network entities 105 may support retransmissions of data to increase the likelihood that data is received successfully. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly via a communication link (e.g., the communication link (s) 125, a D2D communication link 135) . HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC) ) , forward error correction (FEC) , and retransmission (e.g., automatic repeat request (ARQ) ) . HARQ may improve throughput at the MAC layer in relatively poor radio conditions (e.g., low signal-to-noise conditions) . In some examples, a device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific slot for data received via a previous symbol in the slot. In some other examples, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
[0066] In some examples of wireless communications system 100, hybrid CSI feedback may be supported. In such systems, a UE 115 may multiplex unquantized and quantized CSI feedback on the same uplink shared channel transmission for reporting to a network entity 105. For instance, the network entity 105 may transmit to the UE 115 a downlink transmission of one or more signals for measurement by the UE 115. The UE 115 may receive and measure the one or more signals and, based on the measurements, may generate CSI for the downlink channel over which the one or more signals were received. The CSI may include both quantized and unquantized CSI feedback. In some cases, the UE 115 may receive an indication of, or may determine, a quantity of symbols allocated for the unquantized CSI feedback in the uplink shared channel transmission, a location within the uplink shared channel transmission of the allocated quantity of symbols, or both. In some cases, the inclusion of the unquantized CSI feedback in a CSI report may be in accordance with one or more CSI reporting rules (e.g., priority, omission, packing order, and CSI processing rules) signaled by the network entity 105 or determined by the UE 115. Accordingly, the UE 115 may configure the CSI report in accordance with the determined quantity of symbols to be allocated for the unquantized CSI feedback, the determined location of the quantity of symbols allocated for the unquantized CSI feedback, the one or more CSI reporting rules, or a combination thereof. The UE 115 may transmit an uplink shared channel transmission that includes the CSI report in which the quantized and unquantized CSI feedback may be multiplexed.
[0067] FIG. 2 shows an example of a portion of a wireless communications system 200 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. In some cases, the wireless communications system 200 may support or be supported by aspects of the wireless communications system 100 described with reference to FIG. 1. For instance, the wireless communications system 200 may include a network entity 105-a and a UE 115-a, which may be examples of network entities 105 and UEs 115, respectively, described with reference to FIG. 1. The network entity 105-a and UE 115-a may communicate using communication links 225 (e.g., a Uu link) , which may be examples of the communication link (s) 125 described with reference to FIG. 1. For instance, the network entity 105-a may transmit downlink communications, such as a reference signal 220, to the UE 115-a, via a downlink channel 225-a, and the UE 115-a may transmit uplink communications, such as an uplink shared channel transmission including a CSI report 230, to the network entity 105-a, via an uplink channel 225-b.
[0068] In accordance with aspects described herein, the wireless communications system 200 may support TDM of unquantized and quantized CSI feedback on different OFDM symbols. For instance, the network entity 105-a may transmit, to the UE 115-a, via the downlink channel 225-a, a downlink transmission of one or more signals, such as the reference signal 220, for measurement by the UE 115-a. The UE 115-a may receive and measure the reference signal 220 and may generate CSI for the downlink channel 225-a. In some cases, the CSI may include both quantized and unquantized CSI. For instance, the quantized CSI may be digital CSI and the unquantized CSI may be analog CSI. The UE 115-a may transmit, to the network entity 105-a, an uplink shared channel transmission that includes the CSI report 230 in which the quantized and unquantized CSI may be multiplexed. In some cases, the UE 115-a may additionally receive an indication of, or may determine, a quantity of symbols that should be allocated for the unquantized CSI feedback in the uplink shared channel transmission, a location within the uplink shared channel transmission of the allocated quantity of symbols, or both. In some cases, the inclusion of the unquantized CSI feedback may be in accordance with one or more CSI reporting rules (e.g., priority, omission, packing order, and CSI processing rules) determined by the UE 115-a or signaled to the UE 115-a by the network entity 105-a.
[0069] FIG. 3 shows examples of CSI report configurations 300 (e.g., 300-a, 300-b, 300-c, and 300-d) that support hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. In some cases, the CSI report configurations 300 may support or be supported by aspects of the wireless communications systems 100 and 200, described with reference to FIGs. 1 and 2. For instance, the CSI report configurations 300 may be various configurations of CSI feedback transmitted, by the UE 115-a, in the CSI report 230 in an uplink shared channel transmission sent to the network entity 105-a.
[0070] In some implementations, the UE 115-a may be configured with, or may receive an indication of, a quantity of symbols (e.g., a quantity of OFDM symbols) that should be allocated in the uplink shared channel transmission for the unquantized CSI feedback. For instance, the network entity 105-a may signal to the UE 115-a, such as via an RRC configuration message or DCI, an indication of a quantity of symbols in the uplink shared channel transmission that should be dedicated to unquantized CSI feedback. The network entity 105-a may determine the quantity of symbols as a factor of a total quantity of symbols scheduled for the uplink shared channel transmission. For instance, the network entity 105-a may determine the quantity of symbols as Nsymb, analog= α·Nsymb, all, where Nsymb, all is the total quantity of symbols scheduled for the uplink shared channel transmission, α is a scaling factor, and Nsymb, analog is the quantity of symbols dedicated to the unquantized CSI feedback. The network entity 105-a may signal one or more of the parameters Nsymb, all, α, and Nsymb, analog to the UE 115-a.
[0071] In some implementations, the UE 115-a may determine the quantity of symbols that should be allocated in the uplink shared channel transmission for the unquantized CSI feedback. For instance, the UE 115-a may determine the quantity of symbols based on a quantity of unquantized channel coefficients associated with the unquantized CSI feedback, a coding offset configured for the unquantized CSI feedback, a quantity of subcarriers of the uplink shared channel transmission, or a combination thereof. For instance, the UE 115-a may determine the quantity of symbols as where Ncoef is the quantity of unquantized channel coefficients, is the quantity of subcarriers of the uplink shared channel transmission, and β is the coding offset for the unquantized CSI feedback.
[0072] In some implementations, in addition to determining a quantity of symbols to be dedicated to unquantized CSI feedback in the uplink shared channel transmission, the network entity 105-a or the UE 115-a may determine a location within the uplink shared channel transmission of the quantity of symbols dedicated to the unquantized CSI feedback. When the network entity 105-a makes a determination regarding the location, the network entity 105-a may signal the location to the UE 115-a, such as via an RRC configuration message or DCI.
[0073] For example, the CSI report 230 included in the uplink shared channel transmission may be configured to include the quantity symbols dedicated to the unquantized CSI feedback in a determined location in accordance with one of the CSI report configurations 300 (e.g., 300-a, 300-b, 300-c, and 300-d) . For instance, the CSI report configurations 300 may include a quantity of symbols dedicated to each of a DMRS 310 (e.g., 310-a, 310-b, 310-c, and 310-d) , HARQ-ACK feedback 320 (e.g., 320-a, 320-b, 320-c, and 320-d) , CSI Part 1 feedback 330 (e.g., 330-a, 330-b, 330-c, and 330-d) , CSI Part 2 feedback 340 (e.g., 340-a, 340-b, 340-c, and 340-d) , CSI Part 3 feedback 350 (e.g., 350-a, 350-b, 350-c, and 350-d) , and uplink scheduled (UL-SCH) data 360 (e.g., 360-a, 360-b, 360-c, and 360-d) . The CSI Part 1 feedback 330 and the CSI Part 2 feedback 340 data may include quantized (e.g., digital) CSI feedback, and the CSI Part 3 feedback 350 may include unquantized (e.g., analog) CSI feedback. In some cases, the CSI part 1 feedback 330 may carry information of the quantity of unquantized channel coefficients associated with the unquantized CSI feedback and the CSI part 2 feedback 340 may indicate a delay tap location and spatial domain / frequency domain (SD / FD) basis associated with the unquantized channel feedback.
[0074] Referring to CSI report configuration 300-a, in some cases, the location of the quantity of symbols dedicated to the unquantized CSI feedback, e.g., the CSI Part 3 feedback 350-a, may be determined to be between a quantity of symbols that carry CSI Part 1 feedback 330-a and a quantity of symbols that carry CSI Part 2 feedback 340-a. Having the CSI Part 3 feedback 350-a in close proximity to the DMRS 310-a may provide additional channel estimation gain for decoding the CSI Part 3 feedback 350-a by the network entity 105-a.
[0075] Referring to CSI report configuration 300-b, in some cases, the location of the quantity of symbols dedicated to the unquantized CSI feedback, e.g., the CSI Part 3 feedback 350-b, may be determined to be between a quantity of symbols that carry CSI Part 2 feedback 340-b and a quantity of symbols that carry UL-SCH data 360-b.
[0076] Referring to CSI report configuration 300-c, in some cases, the location of the quantity of symbols dedicated to the unquantized CSI feedback, e.g., the CSI Part 3 feedback 350-c, may be determined to be in a last quantity of symbols that follows a quantity of symbols that carry UL-SCH data 360-c.
[0077] Referring to CSI report configuration 300-d, in some cases, the location of the quantity of symbols dedicated to the unquantized CSI feedback, e.g., the CSI Part 3 feedback 350-d, may be determined to be between a configurable gap 370 that follows a quantity of symbols that carry CSI Part 1 feedback 330-d and a quantity of symbols that carry at least a portion of CSI Part 2 feedback 340-d. In some cases, the configurable gap 370 may include a quantity of symbols that carry another portion of CSI Part 2 feedback 340-d.
[0078] FIG. 4 shows an example of a priority function 400 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. In some cases, the priority function 400 may support or be supported by aspects of the wireless communications systems 100 and 200, described with reference to FIGs. 1 and 2, or the CSI report configurations 300. For instance, the priority function 400 may refer to a process by which a priority level is determined for unquantized CSI feedback (e.g., the CSI Part 3 feedback 350) included in the CSI report 230 in an uplink shared channel transmission from the UE 115-a to the network entity 105-a.
[0079] The unquantized CSI feedback included in the CSI report 230 may be associated with the same priority level as the quantized CSI feedback included in the same CSI report 230, and the priority level may be determined based on the type of the CSI report 230 (e.g., an aperiodic CSI report or a periodic CSI report) , a serving cell index, a CSI report configuration ID index, or a combination thereof. When the CSI report 230 includes the unquantized CSI feedback, the unquantized channel coefficients for the unquantized CSI feedback may be partitioned into multiple groups (e.g., 2 groups) based on a priority function (e.g., which may be extended from a priority function for the quantized CSI feedback, such as R16 eType II CSI) , which may be determined based on Prio (l, n, m) =M·N·Perm (l) +M·n+m, where m is a transmission antenna index or SD basis index, n is a receive antenna index, l is a delay tap or FD basis index, and Perm (l) is a permutation function. For instance, as shown in FIG. 4, a receive antenna 0 and a first tap of the M channel coefficient associated with M transmission antenna may have the highest priority compared to other channel coefficients.
[0080] In some implementations, some or all of the unquantized CSI feedback may be omitted from a CSI report 230 based on one or more CSI omission rules. For instance, the unquantized CSI feedback, or a portion thereof, may be omitted in the case that the determined quantity of symbols (such as determined as described with reference to FIG. 3) for the unquantized CSI feedback exceeds a configured or determined maximum quantity of symbols scheduled for the unquantized CSI feedback in the uplink shared channel transmission. That is, when an amount of unquantized CSI feedback is larger than an amount of symbols scheduled for the unquantized CSI feedback in the uplink shared channel transmission, some or all of the unquantized CSI feedback may be dropped or omitted from inclusion in the CSI report 230 in the uplink shared channel transmission.
[0081] For instance, omission of the unquantized CSI feedback (e.g., omission of one or more CSI reports 230) , or a portion of the unquantized CSI feedback (e.g., omission of a portion of unquantized CSI feedback within a single CSI report 230) , may occur when is larger than α·Nsymb, all, where ∑iNcoef, i denotes a sum of the quantity of unquantized channel coefficients across all CSI reports 230, and α·Nsymb, all is the configured or determined maximum quantity of symbols to be dedicated to unquantized CSI feedback (such as described with reference to FIG. 3) in the uplink shared channel transmission.
[0082] In some cases, omission of unquantized CSI feedback may be performed on a priority level basis, beginning with the lowest priority CSI report 230 until the highest priority level is reached, which may cause to be less than or equal to α·Nsymb, all. That is, one or more of the CSI reports 230 including the unquantized CSI feedback may be omitted, priority level by priority level, until an amount of unquantized CSI feedback to be transmitted in remaining CSI reports 230 is less than the configured maximum quantity of symbols scheduled for the unquantized CSI feedback in the uplink shared channel transmission.
[0083] Further, within a single CSI report 230, partial amounts of unquantized CSI feedback may be omitted. For instance, as described with reference to FIG. 4, the unquantized CSI feedback within a CSI report 230 may be partitioned into multiple priority groups based on a priority function. In this case, a low priority group of unquantized CSI feedback corresponding to a large delay tap index or weak channel coefficients may be omitted from the CSI report 230 first. If omission of the lower priority group is not sufficient, additional groups of unquantized CSI feedback may be omitted (e.g., a high priority group of unquantized CSI feedback with a small delay tap index or strong channel coefficients) from the CSI report 230 until a remaining amount of unquantized CSI feedback to be transmitted is less than the configured maximum quantity of symbols scheduled for unquantized CSI feedback in the uplink shared channel transmission.
[0084] FIG. 5 shows examples of packing order processes 500 (e.g., 500-a and 500-b) that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. In some cases, the packing order processes 500 may support or be supported by aspects of the wireless communications systems 100 and 200, described with reference to FIGs. 1 and 2, the CSI report configurations 300, or the priority function 400. For instance, the packing order processes 500 may refer to processes in which unquantized channel coefficients 510 (e.g., 510-a and 510-b) associated with unquantized CSI feedback may be packed (e.g., within the determined quantity of symbols of the CSI Part 3 feedback 350) prior to transmission of the CSI report 230 included in the uplink shared channel transmission to the network entity 105-a. In some implementations, a packing order of the unquantized channel coefficients 510 may be based on one or more CSI reporting rules.
[0085] Referring to packing order process 500-a, the rules to determine a packing order of the unquantized channel coefficients 510-a may be based on a priority associated with the unquantized channel coefficients 510-a or the associated unquantized CSI feedback. That is, the unquantized channel coefficients 510-a may be ordered based on a priority rule ordering 520-a, such as based on a priority function (e.g., described with reference to FIG. 4) of the unquantized channel coefficients 510-a, in which coefficients with the highest priority may be mapped prior to those with lower priorities. In such cases, a large DFT spreading 530-a may be used with a DFT size greater than or equal to a total quantity of resource elements (REs) assigned to the unquantized CSI feedback. De-multiplexing 540-a after the DFT spreading 530-a may distribute the spread unquantized channel coefficients 510-a into various branches and, thereafter, scrambling 550-a, RE mapping 560-a, and OFDM modulation 570-a may be performed on each branch to output the unquantized CSI to be transmitted in OFDM symbols, such as CSI Part 3 symbols 580-a, for transmission in the CSI report 230. That is, the DFT spreading 530-a of all of the unquantized channel coefficients 510-a may generate a Gaussian-like white signal to transmit in each symbol for the quantized CSI feedback.
[0086] Referring to packing order process 500-b, in other cases, the rules used to determine a packing order may be based on a natural ordering. That is, the unquantized channel coefficients 510-b may be ordered based on a sequential ordering 520-b. In this case, the natural order of the unquantized channel coefficients 510-b may be fixed (e.g., first a delay tap index, followed by a receive antenna index, and a transmit antenna index) . A random (or triangular) interleaver 525-b and a de-multiplexer 540-b may be utilized to uniformly distribute strong and weak coefficients of the unquantized channel coefficients 510-b into each of the OFDM symbols, such as each of the CSI Part 3 symbols 580-b, to be transmitted to in the CSI report 230. In some cases, the random interleaver 525-b may reuse a triangular interleaver in a UCI polar coding channel, which may provide performance similar to a random interleaver, albeit with lower implementation complexity. In some cases, the DFT spreading 530-b may be optional and, if used, a size may be small relative to priority rule-based packing, and may be equal to quantity of subcarriers in OFDM symbol In some cases, scrambling 550-b, RE mapping 560-b, and OFDM modulation 570-b may additionally be performed on the spread unquantized channel coefficients 510-b.
[0087] In some cases, the unquantized CSI feedback in the CSI report 230 may additionally be based on one or more CSI processing rules. That is, an occupied quantity of CSI processing units utilized for processing or generating the CSI report 230 including unquantized CSI feedback may be reduced (e.g., relaxed) relative to quantized CSI feedback and may be based on a quantity of CSI-RS ports associated with the reference signal 220 transmitted to the UE 115-a for channel measurement. For instance, the occupied quantity of CSI processing units may be Ocpu=0 for the CSI report 230 for a single CSI-RS resource with a maximum of 8 CSI-RS ports. Otherwise Ocpu=1.
[0088] Alternatively, or additionally, a CSI computation time (e.g., Z and Z′, where Z is a time from a last symbol from a downlink control channel transmission triggering one or more CSI reports 230, and Z′ is the time from a last symbol of an aperiodic CSI-RS) may be further reduced (e.g., relaxed) , such as comparable to quantized CSI with wideband frequency granularity. For instance, if Ocpu=0, then the Z1 and Z′1 values for CSI computation delay requirement 1 defined in one or more lookup tables for quantized CSI feedback (e.g., Table 5.4–1 of the 3rd Generation Partnership Project (3GPP) Technical Specification (TS) 38.214) may be used (e.g., Z=10 and Z′=8 symbols for 15 kHz subcarrier spacing (SCS) ) . Otherwise, if Ocpu=1, then the Z1 and Z′1 values for CSI computation delay requirement 2 defined in one or more tables for quantized CSI feedback (e.g., Table 5.4–2 of 3GPP TS 38.214) may be used (e.g., Z=22 and Z′=16 symbols for 15 kHz SCS) . The Z2 and Z′2 or Z3 and Z′3 values for CSI computation delay requirement 2 defined in the one or more tables for quantized CSI feedback (e.g., Table 5.4–2 of 3GPP TS 38.214) may not be applied to the unquantized CSI feedback.
[0089] FIG. 6 shows an example of a process flow 600 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. In some examples, process flow 600 may implement aspects of the wireless communications systems 100 and 200, the CSI report configurations 300, the priority function 400, or the packing order process 500, described with reference to FIGs. 1 to 5. Process flow 600 may be implemented by a UE 115-b and network entity 105-b. UE 115-b may be an example of UE 115 and UE 115-a described with reference to FIGs. 1 and 2, respectively. Network entity 105-b may be an example of network entity 105 and network entity 105-a described with reference to FIGs. 1 and 2, respectively. In the following description of the process flow 600, the communications between the UE 115-b and the network entity 105-b may be transmitted in a different order than the example order shown, or the operations performed by the UE 115-b and the network entity 105-b may be performed in different orders or at different times. Some operations may also be omitted from the process flow 600, and other operations may be added to the process flow 600. In some examples, the operations illustrated in process flow 600 may be performed by hardware (e.g., including circuitry, processing blocks, logic components, and other components) , code (e.g., software or firmware) executed by a processor, or any combination thereof.
[0090] At 605, the network entity 105-b may determine one or more CSI report parameters associated with hybrid CSI feedback to be received from the UE 115-b. For instance, the network entity 105-b may determine a quantity of symbols that should be dedicated to unquantized CSI feedback in a CSI report, a location of the quantity of symbols within an uplink shared channel transmission from the UE 115-b, or a combination thereof. The network entity 105-b may determine the quantity of symbols as a factor of a total quantity of symbols scheduled for the uplink shared channel transmission. For instance, the network entity 105-a may determine the quantity of symbols as Nsymb, analog= α·Nsymb, all, where Nmymb, all is the total quantity of symbols scheduled for the uplink shared channel transmission, α is a scaling factor, and Nsymb, analog is the quantity of symbols dedicated to the unquantized CSI feedback. The network entity 105-b may further determine the location within the uplink shared channel transmission of the quantity of symbols to be dedicated to the unquantized CSI feedback. The determined location may be relative to one or more of a DMRS, HARQ-ACK feedback, CSI Part 1 feedback, CSI Part 2 feedback, or a scheduled uplink data included in the uplink shared channel transmission.
[0091] At 610, the network entity 105-b may transmit, and the UE 115-b may receive, an indication of the determined one or more CSI report parameters. For instance, the network entity 105-b may transmit, to the UE 115-b, a quantity of symbols to be dedicated to the unquantized CSI feedback (e.g., one or more of the parameters Nsymb, all, α, and Nsymb, analog t) , the location of the quantity of symbols within an uplink shared channel transmission, or a combination thereof. The network entity 105-b may transmit the one or more CSI report parameters via an RRC configuration message or DCI.
[0092] At 615, the network entity 105-b may transmit, and the UE 115-b may receive, one or more signals, such as one or more reference signals, for measurement by the UE 115-b.
[0093] At 620, the UE 115-b may measure the received one or more signals, such as the one or more reference signals, and may generate CSI based on measurement of the one or more signals. In some cases, the generated CSI may be hybrid CSI, including both quantized and unquantized CSI.
[0094] At 625, in some cases, instead of the network entity 105-b determining and signaling, to the UE 115-b, the one or more CSI report parameters (e.g., a quantity of symbols to be dedicated to the unquantized CSI feedback or a location of the quantity of symbols in an uplink shared channel transmission) , the UE 115-b may determine one or more of the CSI report parameters itself. That is, in some cases, the UE 115-b may determine the quantity of symbols to be dedicated to the unquantized CSI feedback or the location of the quantity of symbols in an uplink shared channel transmission, or both. The UE 115-b may determine the quantity of symbols dedicated to the unquantized CSI feedback based on a quantity of unquantized channel coefficients associated with the unquantized CSI feedback, a coding offset configured for the unquantized CSI feedback, a quantity of subcarriers of the uplink shared channel transmission, or a combination thereof. For instance, the UE 115-a may determine the quantity of symbols dedicated to the unquantized CSI feedback as where NSoef is the quantity of unquantized channel coefficients, is the quantity of subcarriers of the uplink shared channel transmission, and β is the coding offset for the unquantized CSI feedback.
[0095] At 630, the UE 115-b may generate a CSI report including hybrid CSI feedback. For instance, the CSI report may multiplex the quantized and unquantized CSI feedback. Additionally, the CSI report may be configured in accordance with the determined quantity of symbols to be dedicated to the unquantized CSI feedback, the determined location of the quantity of symbols to be dedicated to the unquantized CSI feedback, or a combination thereof. In some cases, the UE 115-b may further generate the CSI report based on one or more CSI reporting rules, such as based on one or more priority rules, omission rules, packing or rules, CSI processing rules, or a combination thereof.
[0096] At 635, the UE 115-b may transmit, and the network entity 105-b may receive, the CSI report including the hybrid CSI feedback in an uplink shared channel transmission.
[0097] FIG. 7 shows a block diagram 700 of a device 705 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. The device 705 may be an example of aspects of a UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. The device 705, or one or more components of the device 705 (e.g., the receiver 710, the transmitter 715, the communications manager 720) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0098] The receiver 710 may provide a means 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 related to hybrid analog and digital channel state reporting) . Information may be passed on to other components of the device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.
[0099] The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit 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 related to hybrid analog and digital channel state reporting) . In some examples, the transmitter 715 may be co-located with a receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.
[0100] The communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be examples of means for performing various aspects of hybrid analog and digital channel state reporting as described herein. For example, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0101] In some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0102] Additionally, or alternatively, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor (e.g., referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0103] In some examples, the communications manager 720 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 710, the transmitter 715, or both. For example, the communications manager 720 may receive information from the receiver 710, send information to the transmitter 715, or be integrated in combination with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.
[0104] The communications manager 720 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 720 is capable of, configured to, or operable to support a means for receiving one or more signals for measurement by the UE. The communications manager 720 is capable of, configured to, or operable to support a means for generating, based on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel. The communications manager 720 is capable of, configured to, or operable to support a means for transmitting an uplink shared channel including a CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules.
[0105] By including or configuring the communications manager 720 in accordance with examples as described herein, the device 705 (e.g., at least one processor controlling or otherwise coupled with the receiver 710, the transmitter 715, the communications manager 720, or a combination thereof) may support techniques for reduced processing and more efficient utilization of communication resources.
[0106] FIG. 8 shows a block diagram 800 of a device 805 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. The device 805 may be an example of aspects of a device 705 or a UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communications manager 820. The device 805, or one or more components of the device 805 (e.g., the receiver 810, the transmitter 815, the communications manager 820) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0107] The receiver 810 may provide a means 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 related to hybrid analog and digital channel state reporting) . Information may be passed on to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.
[0108] The transmitter 815 may provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit 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 related to hybrid analog and digital channel state reporting) . In some examples, the transmitter 815 may be co-located with a receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.
[0109] The device 805, or various components thereof, may be an example of means for performing various aspects of hybrid analog and digital channel state reporting as described herein. For example, the communications manager 820 may include a reference signal receiver 825, a CSI generation manager 830, a CSI report transmitter 835, or any combination thereof. The communications manager 820 may be an example of aspects of a communications manager 720 as described herein. In some examples, the communications manager 820, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 may receive information from the receiver 810, send information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.
[0110] The communications manager 820 may support wireless communications in accordance with examples as disclosed herein. The reference signal receiver 825 is capable of, configured to, or operable to support a means for receiving one or more signals for measurement by the UE. The CSI generation manager 830 is capable of, configured to, or operable to support a means for generating, based on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel. The CSI report transmitter 835 is capable of, configured to, or operable to support a means for transmitting an uplink shared channel including a CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules.
[0111] FIG. 9 shows a block diagram 900 of a communications manager 920 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. The communications manager 920 may be an example of aspects of a communications manager 720, a communications manager 820, or both, as described herein. The communications manager 920, or various components thereof, may be an example of means for performing various aspects of hybrid analog and digital channel state reporting as described herein. For example, the communications manager 920 may include a reference signal receiver 925, a CSI generation manager 930, a CSI report transmitter 935, a CSI symbol receiver 940, a symbol determination component 945, a CSI partition manager 950, a CSI packing component 955, a CSI report manager 960, a CSI omission manager 965, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0112] The communications manager 920 may support wireless communications in accordance with examples as disclosed herein. The reference signal receiver 925 is capable of, configured to, or operable to support a means for receiving one or more signals for measurement by the UE. The CSI generation manager 930 is capable of, configured to, or operable to support a means for generating, based on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel. The CSI report transmitter 935 is capable of, configured to, or operable to support a means for transmitting an uplink shared channel including a CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules.
[0113] In some examples, the CSI symbol receiver 940 is capable of, configured to, or operable to support a means for receiving, from a network entity, an indication of a quantity of the second set of symbols allocated for the unquantized CSI feedback.
[0114] In some examples, the symbol determination component 945 is capable of, configured to, or operable to support a means for determining, based on a quantity of unquantized channel coefficients associated with the unquantized CSI feedback and a coding offset configured for the unquantized CSI feedback, a quantity of the second set of symbols allocated for the unquantized CSI feedback.
[0115] In some examples, the quantized CSI feedback and the unquantized CSI feedback are time-domain multiplexed in the CSI report.
[0116] In some examples, the CSI symbol receiver 940 is capable of, configured to, or operable to support a means for receiving, from a network entity, an indication of a location, within the uplink shared channel, of the second set of symbols allocated for the unquantized CSI feedback.
[0117] In some examples, the indication of the location of the second set of symbols allocated for unquantized CSI feedback indicates that the second set of symbols are to be located between a subset of the first set of symbols that includes a first part of the quantized CSI feedback and a subset of the first set of symbols that includes a second part of the quantized CSI feedback. In some examples, between a subset of the first set of symbols that includes a second part of the quantized CSI feedback and a set of symbols that includes scheduled uplink data. In some examples, in a last set of symbols that follows a set of symbols that includes scheduled uplink data; or. In some examples, between a configurable gap that follows a subset of the first set of symbols that include a first part of the quantized CSI feedback and a subset of the first set of symbols that include at least a first portion of a second part of the quantized CSI feedback.
[0118] In some examples, the configurable gap includes a subset of the first set of symbols that include at least a second portion of the second part of the quantized CSI feedback.
[0119] In some examples, the first part of the quantized CSI feedback includes information indicating a quantity of unquantized channel coefficients associated with the unquantized CSI feedback. In some examples, the second part of the quantized CSI feedback includes information indicating a delay tap location and an SD / FD basis associated with the unquantized channel coefficients.
[0120] In some examples, the unquantized CSI feedback is associated with a same priority level as the quantized CSI feedback. In some examples, the priority level is based on a type of the CSI report, a serving cell index, a CSI report configuration ID, or a combination thereof.
[0121] In some examples, the CSI partition manager 950 is capable of, configured to, or operable to support a means for partitioning, based on a priority function, unquantized channel coefficients associated with the unquantized CSI feedback into two or more groups of unquantized CSI feedback.
[0122] In some examples, the CSI symbol receiver 940 is capable of, configured to, or operable to support a means for receiving an indication of a configured maximum quantity of symbols scheduled for the unquantized CSI feedback. In some examples, the symbol determination component 945 is capable of, configured to, or operable to support a means for determining, based on a quantity of the unquantized channel coefficients associated with the unquantized CSI feedback, a quantity of symbols to be allocated for the unquantized CSI feedback. In some examples, the CSI omission manager 965 is capable of, configured to, or operable to support a means for omitting, from the CSI report and based on priority levels associated with the two or more groups of unquantized CSI feedback, at least one group of the two or more groups of unquantized CSI feedback based on the quantity of symbols to be allocated for the unquantized CSI feedback being greater than the configured maximum quantity of symbols scheduled for the unquantized CSI feedback.
[0123] In some examples, the CSI omission manager 965 is capable of, configured to, or operable to support a means for omitting additional groups of the two or more groups of unquantized CSI feedback until the quantity of symbols to be allocated for the unquantized CSI feedback is less than or equal to the configured maximum quantity of symbols scheduled for the unquantized CSI feedback.
[0124] In some examples, the CSI packing component 955 is capable of, configured to, or operable to support a means for packing, prior to transmission of the uplink shared channel including the CSI report and based on a packing order, channel coefficients associated with the unquantized CSI feedback.
[0125] In some examples, the packing order is based on a priority function of the channel coefficients or is based on a natural order followed by a random interleaver.
[0126] In some examples, the one or more CSI reporting rules include one or more priority rules, omission rules, or both.
[0127] In some examples, the CSI report manager 960 is capable of, configured to, or operable to support a means for generating the CSI report using one or more CSI processing units, where the CSI report includes the unquantized CSI feedback, and where a quantity of the one or more CSI processing units is based on a quantity of CSI reference signal ports associated with the one or more signals.
[0128] FIG. 10 shows a diagram of a system 1000 including a device 1005 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. The device 1005 may be an example of or include components of a device 705, a device 805, or a UE 115 as described herein. The device 1005 may communicate (e.g., wirelessly) with one or more other devices (e.g., network entities 105, UEs 115, or a combination thereof) . The device 1005 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1020, an input / output (I / O) controller, such as an I / O controller 1010, a transceiver 1015, one or more antennas 1025, at least one memory 1030, code 1035, and at least one processor 1040. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1045) .
[0129] The I / O controller 1010 may manage input and output signals for the device 1005. The I / O controller 1010 may also manage peripherals not integrated into the device 1005. In some cases, the I / O controller 1010 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 1010 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 1010 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 1010 may be implemented as part of one or more processors, such as the at least one processor 1040. In some cases, a user may interact with the device 1005 via the I / O controller 1010 or via hardware components controlled by the I / O controller 1010.
[0130] In some cases, the device 1005 may include a single antenna. However, in some other cases, the device 1005 may have more than one antenna, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1015 may communicate bi-directionally via the one or more antennas 1025 using wired or wireless links as described herein. For example, the transceiver 1015 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1015 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 1025 for transmission, and to demodulate packets received from the one or more antennas 1025. The transceiver 1015, or the transceiver 1015 and one or more antennas 1025, may be an example of a transmitter 715, a transmitter 815, a receiver 710, a receiver 810, or any combination thereof or component thereof, as described herein.
[0131] The at least one memory 1030 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 1030 may store computer-readable, computer-executable, or processor-executable code, such as the code 1035. The code 1035 may include instructions that, when executed by the at least one processor 1040, cause the device 1005 to perform various functions described herein. The code 1035 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1035 may not be directly executable by the at least one processor 1040 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1030 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0132] The at least one processor 1040 may include one or more intelligent hardware devices (e.g., one or more general-purpose processors, one or more DSPs, one or more CPUs, one or more graphics processing units (GPUs) , one or more neural processing units (NPUs) (also referred to as neural network processors or deep learning processors (DLPs) ) , one or more microcontrollers, one or more ASICs, one or more FPGAs, one or more programmable logic devices, discrete gate or transistor logic, one or more discrete hardware components, or any combination thereof) . In some cases, the at least one processor 1040 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 1040. The at least one processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 1030) to cause the device 1005 to perform various functions (e.g., functions or tasks supporting hybrid analog and digital channel state reporting) . For example, the device 1005 or a component of the device 1005 may include at least one processor 1040 and at least one memory 1030 coupled with or to the at least one processor 1040, the at least one processor 1040 and the at least one memory 1030 configured to perform various functions described herein.
[0133] In some examples, the at least one processor 1040 may include multiple processors and the at least one memory 1030 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions described herein. In some examples, the at least one processor 1040 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1040) and memory circuitry (which may include the at least one memory 1030) ) , or components, that receives or obtains inputs and processes the inputs 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, the at least one processor 1040 or a processing system including the at least one processor 1040 may be configured to, configurable to, or operable to cause the device 1005 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to”may be used interchangeably and may be associated with a capability, when executing code 1035 (e.g., processor-executable code) stored in the at least one memory 1030 or otherwise, to perform one or more of the functions described herein.
[0134] The communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1020 is capable of, configured to, or operable to support a means for receiving one or more signals for measurement by the UE. The communications manager 1020 is capable of, configured to, or operable to support a means for generating, based on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel. The communications manager 1020 is capable of, configured to, or operable to support a means for transmitting an uplink shared channel including a CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules.
[0135] By including or configuring the communications manager 1020 in accordance with examples as described herein, the device 1005 may support techniques for improved communication reliability, reduced latency, more efficient utilization of communication resources, and improved utilization of processing capability.
[0136] In some examples, the communications manager 1020 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1015, the one or more antennas 1025, or any combination thereof. Although the communications manager 1020 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1020 may be supported by or performed by the at least one processor 1040, the at least one memory 1030, the code 1035, or any combination thereof. For example, the code 1035 may include instructions executable by the at least one processor 1040 to cause the device 1005 to perform various aspects of hybrid analog and digital channel state reporting as described herein, or the at least one processor 1040 and the at least one memory 1030 may be otherwise configured to, individually or collectively, perform or support such operations.
[0137] FIG. 11 shows a flowchart illustrating a method 1100 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. The operations of the method 1100 may be implemented by a UE or its components as described herein. For example, the operations of the method 1100 may be performed by a UE 115 as described with reference to FIGs. 1 through 10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0138] At 1105, the method may include receiving one or more signals for measurement by the UE. The operations of 1105 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1105 may be performed by a reference signal receiver 925 as described with reference to FIG. 9.
[0139] At 1110, the method may include generating, based on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel. The operations of 1110 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1110 may be performed by a CSI generation manager 930 as described with reference to FIG. 9.
[0140] At 1115, the method may include transmitting an uplink shared channel including a CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules. The operations of 1115 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1115 may be performed by a CSI report transmitter 935 as described with reference to FIG. 9.
[0141] FIG. 12 shows a flowchart illustrating a method 1200 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. The operations of the method 1200 may be implemented by a UE or its components as described herein. For example, the operations of the method 1200 may be performed by a UE 115 as described with reference to FIGs. 1 through 10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0142] At 1205, the method may include receiving one or more signals for measurement by the UE. The operations of 1205 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed by a reference signal receiver 925 as described with reference to FIG. 9.
[0143] At 1210, the method may include generating, based on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel. The operations of 1210 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed by a CSI generation manager 930 as described with reference to FIG. 9.
[0144] At 1215, the method may include determining, based on a quantity of unquantized channel coefficients associated with the unquantized CSI feedback and a coding offset configured for the unquantized CSI feedback, a quantity of a second set of symbols allocated for the unquantized CSI feedback. The operations of 1215 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed by a symbol determination component 945 as described with reference to FIG. 9.
[0145] At 1220, the method may include transmitting an uplink shared channel including a CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, the second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules. The operations of 1220 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1220 may be performed by a CSI report transmitter 935 as described with reference to FIG. 9.
[0146] FIG. 13 shows a flowchart illustrating a method 1300 that supports hybrid analog and digital channel state reporting in accordance with one or more aspects of the present disclosure. The operations of the method 1300 may be implemented by a UE or its components as described herein. For example, the operations of the method 1300 may be performed by a UE 115 as described with reference to FIGs. 1 through 10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0147] At 1305, the method may include receiving one or more signals for measurement by the UE. The operations of 1305 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed by a reference signal receiver 925 as described with reference to FIG. 9.
[0148] At 1310, the method may include generating, based on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, where the CSI includes quantized CSI feedback for the channel and unquantized CSI feedback for the channel. The operations of 1310 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed by a CSI generation manager 930 as described with reference to FIG. 9.
[0149] At 1315, the method may include receiving, from a network entity, an indication of a location, within the uplink shared channel, of a second set of symbols allocated for the unquantized CSI feedback. The operations of 1315 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed by a CSI symbol receiver 940 as described with reference to FIG. 9.
[0150] At 1320, the method may include transmitting an uplink shared channel including the CSI report associated with the channel, where the CSI report includes a first set of symbols allocated for the quantized CSI feedback, the second set of symbols allocated for the unquantized CSI feedback, or both, and where the first set of symbols, the second set of symbols, or both are based on one or more CSI reporting rules. The operations of 1320 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1320 may be performed by a CSI report transmitter 935 as described with reference to FIG. 9.
[0151] The following provides an overview of aspects of the present disclosure:
[0152] Aspect 1: A method for wireless communications by a UE, comprising: receiving one or more signals for measurement by the UE; generating, based at least in part on measurement, by the UE, of the one or more signals, CSI associated with a channel for the UE, wherein the CSI comprises quantized CSI feedback for the channel and unquantized CSI feedback for the channel; and transmitting an uplink shared channel comprising a CSI report associated with the channel, wherein the CSI report comprises a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and wherein the first set of symbols, the second set of symbols, or both are based at least in part on one or more CSI reporting rules.
[0153] Aspect 2: The method of aspect 1, further comprising: receiving, from a network entity, an indication of a quantity of the second set of symbols allocated for the unquantized CSI feedback.
[0154] Aspect 3: The method of any of aspects 1 through 2, further comprising: determining, based at least in part on a quantity of unquantized channel coefficients associated with the unquantized CSI feedback and a coding offset configured for the unquantized CSI feedback, a quantity of the second set of symbols allocated for the unquantized CSI feedback.
[0155] Aspect 4: The method of any of aspects 1 through 3, wherein the quantized CSI feedback and the unquantized CSI feedback are time-domain multiplexed in the CSI report.
[0156] Aspect 5: The method of any of aspects 1 through 4, further comprising: receiving, from a network entity, an indication of a location, within the uplink shared channel, of the second set of symbols allocated for the unquantized CSI feedback.
[0157] Aspect 6: The method of aspect 5, wherein the indication of the location of the second set of symbols allocated for the unquantized CSI feedback indicates that the second set of symbols are to be located between a subset of the first set of symbols that comprises a first part of the quantized CSI feedback and a subset of the first set of symbols that comprises a second part of the quantized CSI feedback; between a subset of the first set of symbols that comprises a second part of the quantized CSI feedback and a set of symbols that comprises scheduled uplink data; in a last set of symbols that follows a set of symbols that comprises scheduled uplink data; or between a configurable gap that follows a subset of the first set of symbols that comprise a first part of the quantized CSI feedback and a subset of the first set of symbols that comprise at least a first portion of a second part of the quantized CSI feedback.
[0158] Aspect 7: The method of aspect 6, wherein the configurable gap comprises a subset of the first set of symbols that comprise at least a second portion of the second part of the quantized CSI feedback.
[0159] Aspect 8: The method of any of aspects 6 through 7, wherein the first part of the quantized CSI feedback includes information indicating a quantity of unquantized channel coefficients associated with the unquantized CSI feedback, and the second part of the quantized CSI feedback includes information indicating a delay tap location and a spatial domain / frequency domain (SD / FD) basis associated with the unquantized channel coefficients.
[0160] Aspect 9: The method of any of aspects 1 through 8, wherein the unquantized CSI feedback is associated with a same priority level as the quantized CSI feedback, and the priority level is based at least in part on a type of the CSI report, a serving cell index, a CSI report configuration ID, or a combination thereof.
[0161] Aspect 10: The method of any of aspects 1 through 9, further comprising: partitioning, based at least in part on a priority function, unquantized channel coefficients associated with the unquantized CSI feedback into two or more groups of unquantized CSI feedback.
[0162] Aspect 11: The method of aspect 10, further comprising: receiving an indication of a configured maximum quantity of symbols scheduled for the unquantized CSI feedback; determining, based at least in part on a quantity of the unquantized channel coefficients associated with the unquantized CSI feedback, a quantity of symbols to be allocated for the unquantized CSI feedback; and omitting, from the CSI report and based at least in part on priority levels associated with the two or more groups of unquantized CSI feedback, at least one group of the two or more groups of unquantized CSI feedback based at least in part on the quantity of symbols to be allocated for the unquantized CSI feedback being greater than the configured maximum quantity of symbols scheduled for the unquantized CSI feedback.
[0163] Aspect 12: The method of aspect 11, further comprising: omitting additional groups of the two or more groups of unquantized CSI feedback until the quantity of symbols to be allocated for the unquantized CSI feedback is less than or equal to the configured maximum quantity of symbols scheduled for the unquantized CSI feedback.
[0164] Aspect 13: The method of any of aspects 1 through 12, further comprising: packing, prior to transmission of the uplink shared channel comprising the CSI report and based at least in part on a packing order, channel coefficients associated with the unquantized CSI feedback.
[0165] Aspect 14: The method of aspect 13, wherein the packing order is based at least in part on a priority function of the channel coefficients or is based at least in part on a natural order followed by a random interleaver.
[0166] Aspect 15: The method of any of aspects 1 through 14, wherein the one or more CSI reporting rules comprise one or more priority rules, omission rules, or both.
[0167] Aspect 16: The method of any of aspects 1 through 15, further comprising: generating the CSI report using one or more CSI processing units, wherein the CSI report comprises the unquantized CSI feedback, and wherein a quantity of the one or more CSI processing units is based at least in part on a quantity of CSI reference signal ports associated with the one or more signals.
[0168] Aspect 17: A UE for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 1 through 16.
[0169] Aspect 18: A UE for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 16.
[0170] Aspect 19: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 1 through 16.
[0171] It should be noted that the methods described herein describe possible implementations. The operations and the steps may be rearranged or otherwise modified and other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0172] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
[0173] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0174] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, a GPU, an NPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the 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 in conjunction with a DSP core, or any other such configuration) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
[0175] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0176] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed 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, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0177] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”
[0178] As used herein, including in the claims, the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. For example, if a claim recites “a component” that performs 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 “a component” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
[0179] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database, or another data structure) , ascertaining, and the like. Also, “determining” can include receiving (e.g., receiving information) , accessing (e.g., accessing data stored in memory) , and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.
[0180] In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label or other subsequent reference label.
[0181] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some figures, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0182] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment (UE) , comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:receive one or more signals for measurement by the UE;generate, based at least in part on measurement, by the UE, of the one or more signals, channel state information (CSI) associated with a channel for the UE, wherein the CSI comprises quantized CSI feedback for the channel and unquantized CSI feedback for the channel; andtransmit an uplink shared channel comprising a CSI report associated with the channel, wherein the CSI report comprises a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and wherein the first set of symbols, the second set of symbols, or both are based at least in part on one or more CSI reporting rules.2.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive, from a network entity, an indication of a quantity of the second set of symbols allocated for the unquantized CSI feedback.3.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:determine, based at least in part on a quantity of unquantized channel coefficients associated with the unquantized CSI feedback and a coding offset configured for the unquantized CSI feedback, a quantity of the second set of symbols allocated for the unquantized CSI feedback.4.The UE of claim 1, wherein the quantized CSI feedback and the unquantized CSI feedback are time-domain multiplexed in the CSI report.5.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive, from a network entity, an indication of a location, within the uplink shared channel, of the second set of symbols allocated for the unquantized CSI feedback.6.The UE of claim 5, wherein the indication of the location of the second set of symbols allocated for the unquantized CSI feedback indicates that the second set of symbols are to be located:between a subset of the first set of symbols that comprises a first part of the quantized CSI feedback and a subset of the first set of symbols that comprises a second part of the quantized CSI feedback;between a subset of the first set of symbols that comprises a second part of the quantized CSI feedback and a set of symbols that comprises scheduled uplink data;in a last set of symbols that follows a set of symbols that comprises scheduled uplink data; orbetween a configurable gap that follows a subset of the first set of symbols that comprise a first part of the quantized CSI feedback and a subset of the first set of symbols that comprise at least a first portion of a second part of the quantized CSI feedback.7.The UE of claim 6, wherein the configurable gap comprises a subset of the first set of symbols that comprise at least a second portion of the second part of the quantized CSI feedback.8.The UE of claim 6, wherein:the first part of the quantized CSI feedback includes information indicating a quantity of unquantized channel coefficients associated with the unquantized CSI feedback, andthe second part of the quantized CSI feedback includes information indicating a delay tap location and a spatial domain / frequency domain (SD / FD) basis associated with the unquantized channel coefficients.9.The UE of claim 1, wherein:the unquantized CSI feedback is associated with a same priority level as the quantized CSI feedback, andthe priority level is based at least in part on a type of the CSI report, a serving cell index, a CSI report configuration ID, or a combination thereof.10.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:partition, based at least in part on a priority function, unquantized channel coefficients associated with the unquantized CSI feedback into two or more groups of unquantized CSI feedback.11.The UE of claim 10, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive an indication of a configured maximum quantity of symbols scheduled for the unquantized CSI feedback;determine, based at least in part on a quantity of the unquantized channel coefficients associated with the unquantized CSI feedback, a quantity of symbols to be allocated for the unquantized CSI feedback; andomit, from the CSI report and based at least in part on priority levels associated with the two or more groups of unquantized CSI feedback, at least one group of the two or more groups of unquantized CSI feedback based at least in part on the quantity of symbols to be allocated for the unquantized CSI feedback being greater than the configured maximum quantity of symbols scheduled for the unquantized CSI feedback.12.The UE of claim 11, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:omit additional groups of the two or more groups of unquantized CSI feedback until the quantity of symbols to be allocated for the unquantized CSI feedback is less than or equal to the configured maximum quantity of symbols scheduled for the unquantized CSI feedback.13.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:packing, prior to transmission of the uplink shared channel comprising the CSI report and based at least in part on a packing order, channel coefficients associated with the unquantized CSI feedback.14.The UE of claim 13, wherein the packing order is based at least in part on a priority function of the channel coefficients or is based at least in part on a natural order followed by a random interleaver.15.The UE of claim 1, wherein the one or more CSI reporting rules comprise one or more priority rules, omission rules, or both.16.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:generate the CSI report using one or more CSI processing units, wherein the CSI report comprises the unquantized CSI feedback, and wherein a quantity of the one or more CSI processing units is based at least in part on a quantity of CSI reference signal ports associated with the one or more signals.17.A method for wireless communications by a user equipment (UE) , comprising:receiving one or more signals for measurement by the UE;generating, based at least in part on measurement, by the UE, of the one or more signals, channel state information (CSI) associated with a channel for the UE, wherein the CSI comprises quantized CSI feedback for the channel and unquantized CSI feedback for the channel; andtransmitting an uplink shared channel comprising a CSI report associated with the channel, wherein the CSI report comprises a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and wherein the first set of symbols, the second set of symbols, or both are based at least in part on one or more CSI reporting rules.18.The method of claim 17, further comprising:receiving, from a network entity, an indication of a quantity of the second set of symbols allocated for the unquantized CSI feedback.19.The method of claim 17, further comprising:receiving, from a network entity, an indication of a location, within the uplink shared channel, of the second set of symbols allocated for the unquantized CSI feedback.20.A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors of a user equipment (UE) to:receive one or more signals for measurement by the UE;generate, based at least in part on measurement, by the UE, of the one or more signals, channel state information (CSI) associated with a channel for the UE, wherein the CSI comprises quantized CSI feedback for the channel and unquantized CSI feedback for the channel; andtransmit an uplink shared channel comprising a CSI report associated with the channel, wherein the CSI report comprises a first set of symbols allocated for the quantized CSI feedback, a second set of symbols allocated for the unquantized CSI feedback, or both, and wherein the first set of symbols, the second set of symbols, or both are based at least in part on one or more CSI reporting rules.
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