Techniques for pucch resource determination for type-i csi
By assuming RI values greater than one for CSI reports, the method addresses the inefficiencies in blind decoding by enabling precise payload size determination and resource allocation, thereby reducing network complexity and improving processing efficiency.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- QUALCOMM INC
- Filing Date
- 2024-11-08
- Publication Date
- 2026-05-15
AI Technical Summary
In wireless communications systems, the variation in CSI payload sizes due to different rank indicators (RIs) leads to increased network complexity and processing requirements, necessitating blind decoding of UCI messages, which is inefficient and resource-intensive.
The proposed solution involves assuming RI values greater than one for CSI reports, allowing the UE to determine an 'assumed' CSI payload size and select appropriate PUCCH resources, with the network optionally indicating the RI value or basing it on the maximum quantity of layers supported by the component carrier, thereby reducing the need for blind decoding.
This approach reduces network complexity by ensuring accurate payload size determination and resource allocation, minimizing the need for blind decoding and enhancing processing efficiency.
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Figure CN2024130783_15052026_PF_FP_ABST
Abstract
Description
TECHNIQUES FOR PUCCH RESOURCE DETERMINATION FOR TYPE-I CSI
[0001] FIELD OF TECHNOLOGY
[0002] The following relates to wireless communications, including techniques for physical uplink control channel (PUCCH) resource determination for Type-I channel state information (CSI) .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) .
[0004] In some wireless communications systems, wireless devices (e.g., UEs) may be configured with up to four physical uplink control channel (PUCCH) resource sets that are usable for transmitting uplink control information (UCI) , such as hybrid automatic repeat request (HARQ) feedback, scheduling requests, and channel state information (CSI) reports. Each of the configured PUCCH resource sets may be usable for transmitting UCI with different payload sizes.SUMMARY
[0005] 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.
[0006] A method by a user equipment (UE) is described. The method may include receiving, from a network entity, control signaling indicating a channel state information (CSI) reporting configuration for transmitting a CSI report, generating a CSI report in accordance with the CSI reporting configuration, and transmitting an uplink control information (UCI) message including the CSI report via an uplink channel resource, where the uplink channel resource is determined based on an assumed rank indicator (RI) value that is greater than one.
[0007] A UE 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, from a network entity, control signaling indicating a CSI reporting configuration for transmitting a CSI report, generate a CSI report in accordance with the CSI reporting configuration, and transmit a UCI message including the CSI report via an uplink channel resource, where the uplink channel resource is determined based on an assumed RI value that is greater than one.
[0008] Another UE is described. The UE may include means for receiving, from a network entity, control signaling indicating a CSI reporting configuration for transmitting a CSI report, means for generating a CSI report in accordance with the CSI reporting configuration, and means for transmitting a UCI message including the CSI report via an uplink channel resource, where the uplink channel resource is determined based on an assumed RI value that is greater than one.
[0009] A non-transitory computer-readable medium storing code is described. The code may include instructions executable by one or more processors to receive, from a network entity, control signaling indicating a CSI reporting configuration for transmitting a CSI report, generate a CSI report in accordance with the CSI reporting configuration, and transmit a UCI message including the CSI report via an uplink channel resource, where the uplink channel resource is determined based on an assumed RI value that is greater than one.
[0010] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, a quantity of physical resource blocks (PRBs) of the uplink channel resource may be determined based on the assumed RI value.
[0011] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the uplink channel resource and the quantity of PRBs of the uplink channel resource may be determined based on a payload size associated with the assumed RI value.
[0012] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, via the control signaling, an indication of the assumed RI value that may be greater than one.
[0013] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the assumed RI value may be determined based on a maximum quantity of layers supported by a component carrier within which measurements of the CSI report were performed.
[0014] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the assumed RI value includes a minimum value between four and the maximum quantity of layers supported by the component carrier.
[0015] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the assumed RI value may be equal to the maximum quantity of layers supported by the component carrier.
[0016] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the assumed RI value may be equal to the maximum quantity of layers supported by the component carrier based on the maximum quantity of layers supported by the component carrier being larger than four.
[0017] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the assumed RI value includes a RI value that may be greater than one and that results in a maximum payload size of the CSI report.
[0018] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the assumed RI value may be equal to four.
[0019] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, via the control signaling, an indication of a codebook scheme associated with the CSI reporting configuration, where the assumed RI value may be based on the codebook scheme.
[0020] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the assumed RI value includes a RI value that results in a maximum payload size of the CSI report based on the codebook scheme.
[0021] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the CSI report includes a wideband, two-part CSI report.
[0022] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, measurements of the CSI report may be performed within a component carrier and the CSI report includes a wideband, two-part CSI report based on a maximum quantity of layers supported by the component carrier being greater than four.
[0023] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving an indication of a set of multiple uplink channel resource sets and selecting an uplink channel resource set from the set of multiple uplink channel resource sets based on a payload size associated with the assumed RI value, where the uplink channel resource may be included within the selected uplink channel resource set.
[0024] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for multiplexing the CSI report with additional uplink data to generate the UCI message, where the uplink channel resource may be determined based on a payload size associated with the assumed RI value and an additional payload size of the additional uplink data, where the additional uplink data includes at least hybrid automatic repeat request (HARQ) feedback information.
[0025] A method by a network entity is described. The method may include outputting, to a UE, control signaling indicating a CSI reporting configuration for transmitting a CSI report, obtaining a UCI message including a CSI report via an uplink channel resource and in accordance with the CSI reporting configuration, where the uplink channel resource is determined based on an assumed RI value that is greater than one, and decoding the UCI message based on the assumed RI value.
[0026] A network entity is described. The network entity 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 network entity to output, to a UE, control signaling indicating a CSI reporting configuration for transmitting a CSI report, obtain a UCI message including a CSI report via an uplink channel resource and in accordance with the CSI reporting configuration, where the uplink channel resource is determined based on an assumed RI value that is greater than one, and decode the UCI message based on the assumed RI value.
[0027] Another network entity is described. The network entity may include means for outputting, to a UE, control signaling indicating a CSI reporting configuration for transmitting a CSI report, means for obtaining a UCI message including a CSI report via an uplink channel resource and in accordance with the CSI reporting configuration, where the uplink channel resource is determined based on an assumed RI value that is greater than one, and means for decoding the UCI message based on the assumed RI value.
[0028] A non-transitory computer-readable medium storing code is described. The code may include instructions executable by one or more processors to output, to a UE, control signaling indicating a CSI reporting configuration for transmitting a CSI report, obtain a UCI message including a CSI report via an uplink channel resource and in accordance with the CSI reporting configuration, where the uplink channel resource is determined based on an assumed RI value that is greater than one, and decode the UCI message based on the assumed RI value.
[0029] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, a quantity of PRBs of the uplink channel resource may be determined based on the assumed RI value.
[0030] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the uplink channel resource and the quantity of PRBs of the uplink channel resource may be determined based on a payload size associated with the assumed RI value.
[0031] Some examples of the method, network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for outputting, via the control signaling, an indication of the assumed RI value that may be greater than one.
[0032] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the assumed RI value may be determined based on a maximum quantity of layers supported by a component carrier within which measurements of the CSI report were performed.
[0033] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the assumed RI value includes a minimum value between four and the maximum quantity of layers supported by the component carrier.
[0034] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the assumed RI value may be equal to the maximum quantity of layers supported by the component carrier.
[0035] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the assumed RI value may be equal to the maximum quantity of layers supported by the component carrier based on the maximum quantity of layers supported by the component carrier being larger than four.
[0036] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the assumed RI value includes a RI value that may be greater than one and that results in a maximum payload size of the CSI report.
[0037] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the assumed RI value may be equal to four.
[0038] Some examples of the method, network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for outputting, via the control signaling, an indication of a codebook scheme associated with the CSI reporting configuration, where the assumed RI value may be based on the codebook scheme.
[0039] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the assumed RI value includes a RI value that results in a maximum payload size of the CSI report based on the codebook scheme.
[0040] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the CSI report includes a wideband, two-part CSI report.
[0041] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, measurements of the CSI report may be performed within a component carrier and the CSI report includes a wideband, two-part CSI report based on a maximum quantity of layers supported by the component carrier being greater than four.
[0042] Some examples of the method, network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for outputting an indication of a set of multiple uplink channel resource sets, where the uplink channel resource may be included within an uplink channel resource set that may be selected from the set of multiple uplink channel resource sets.
[0043] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the UCI message includes the CSI report that may be multiplexed with additional uplink data, the uplink channel resource may be based on a payload size associated with the assumed RI value and an additional payload size of the additional uplink data, and the additional uplink data includes at least HARQ feedback information.
[0044] 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
[0045] FIG. 1 shows an example of a wireless communications system that supports techniques for physical uplink control channel (PUCCH) resource determination for Type-I channel state information (CSI) in accordance with one or more aspects of the present disclosure.
[0046] FIG. 2 shows an example of a wireless communications system that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure.
[0047] FIG. 3 shows an example of a resource configuration that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure.
[0048] FIG. 4 shows an example of a process flow that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure.
[0049] FIGs. 5 and 6 show block diagrams of devices that support techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure.
[0050] FIG. 7 shows a block diagram of a communications manager that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure.
[0051] FIG. 8 shows a diagram of a system including a device that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure.
[0052] FIGs. 9 and 10 show block diagrams of devices that support techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure.
[0053] FIG. 11 shows a block diagram of a communications manager that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure.
[0054] FIG. 12 shows a diagram of a system including a device that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure.
[0055] FIGs. 13 and 14 show flowcharts illustrating methods that support techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0056] In some wireless communications systems, wireless devices (e.g., user equipments (UEs) ) may be configured with up to four PUCCH resource sets that are usable for transmitting uplink control information (UCI) , such as hybrid automatic repeat request (HARQ) feedback, scheduling requests, and channel state information (CSI) reports. Each of the configured PUCCH resource sets may be usable for transmitting UCI with different payload sizes. As such, the UE may select which PUCCH resource set to use based on the UCI payload size. The payload size of a CSI report (transmitted via UCI) may not be known by the UE and network before the CSI is measured and reported, as CSI reports with different rank indicators (RIs) may have different payload sizes. In such cases, variations in the CSI payload size (and therefore variations in the UCI payload size) may require the network to perform blind decoding to receive and decode UCI messages, which may increase network complexity and processing.
[0057] To prevent such blind decoding, some wireless communications systems may have assumed a rank-1 (e.g., RI=1) for CSI reports, which corresponds to the maximum possible CSI payload size. The assumption of rank-1 for CSI reports enables the UE and the network to assume a constant CSI payload size (in order to ensure all CSI data can be accommodated, regardless of the “actual” rank value) , thereby reducing the need for blind decoding at the network. However, the assumption of rank-1 does not always result in the maximum possible CSI payload size for new CSI reporting schemes (e.g., “Scheme A” and “Scheme B” ) , which may result in the network having to perform blind decoding for UCI messages that include CSI reports.
[0058] Accordingly, aspects of the present disclosure are directed to new rules and configurations for RI assumptions applied to CSI reports for the purposes of identifying PUCCH resources for UCI messages that include CSI reports. In particular, aspects of the present disclosure are directed to techniques for assuming RI values that are greater than one (e.g., assumed RI >1) for CSI reports, where the assumed RI values are used by the UE to determine an “assumed” CSI payload size, generate CSI reports, and select PUCCH resources that will be used to communicate UCI messages that include the CSI reports. In some cases, the network may explicitly indicate an assumed RI value that is to be used by the UE (e.g., RI=4) . In other cases, the assumed RI value may be based on (e.g., equal to) the maximum quantity of layers supported by a component carrier associated with the CSI report (e.g., the component carrier over which measurements for the CSI report were performed) . In some implementations, the network may configure or indicate a codebook scheme for CSI reporting (e.g., Scheme A, Scheme B) , where the UE may assume a RI value based on the codebook scheme (e.g., codebook-dependent RI assumptions) . For instance, the UE may assume a RI value that will result in a maximum “assumed” payload size of the CSI report for the configured codebook scheme.
[0059] Aspects of the disclosure are initially described in the context of wireless communications systems. Additional aspects of the disclosure are described in the context of an example resource configuration and an example process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to techniques for PUCCH resource determination for Type-I CSI.
[0060] FIG. 1 shows an example of a wireless communications system 100 that supports techniques for PUCCH resource determination for Type-I CSI 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.
[0061] 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) .
[0062] 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.
[0063] 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.
[0064] 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.
[0065] 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) .
[0066] 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) ) .
[0067] 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.
[0068] 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.
[0069] For instance, an access network (AN) or RAN may include communications between access nodes (e.g., an IAB donor) , IAB node (s) 104, and one or more UEs 115. The IAB donor may facilitate connection between the core network 130 and the AN (e.g., via a wired or wireless connection to the core network 130) . That is, an IAB donor may refer to a RAN node with a wired or wireless connection to the core network 130. The IAB donor may include one or more of a CU 160, a DU 165, and an RU 170, in which case the CU 160 may communicate with the core network 130 via an interface (e.g., a backhaul link) . The IAB donor and IAB node (s) 104 may communicate via an F1 interface according to a protocol that defines signaling messages (e.g., an F1 AP protocol) . Additionally, or alternatively, the CU 160 may communicate with the core network 130 via an interface, which may be an example of a portion of a backhaul link, and may communicate with other CUs (e.g., including a CU 160 associated with an alternative IAB donor) via an Xn-C interface, which may be an example of another portion of a backhaul link.
[0070] IAB node (s) 104 may refer to RAN nodes that provide IAB functionality (e.g., access for UEs 115, wireless self-backhauling capabilities) . A DU 165 may act as a distributed scheduling node towards child nodes associated with the IAB node (s) 104, and the IAB-MT may act as a scheduled node towards parent nodes associated with IAB node (s) 104. That is, an IAB donor may be referred to as a parent node in communication with one or more child nodes (e.g., an IAB donor may relay transmissions for UEs through other IAB node (s) 104) . Additionally, or alternatively, IAB node (s) 104 may also be referred to as parent nodes or child nodes to other IAB node (s) 104, depending on the relay chain or configuration of the AN. The IAB-MT entity of IAB node (s) 104 may provide a Uu interface for a child IAB node (e.g., the IAB node (s) 104) to receive signaling from a parent IAB node (e.g., the IAB node (s) 104) , and a DU interface (e.g., a DU 165) may provide a Uu interface for a parent IAB node to signal to a child IAB node or UE 115.
[0071] For example, IAB node (s) 104 may be referred to as parent nodes that support communications for child IAB nodes, or may be referred to as child IAB nodes associated with IAB donors, or both. An IAB donor may include a CU 160 with a wired or wireless connection (e.g., backhaul communication link (s) 120) to the core network 130 and may act as a parent node to IAB node (s) 104. For example, the DU 165 of an IAB donor may relay transmissions to UEs 115 through IAB node (s) 104, or may directly signal transmissions to a UE 115, or both. The CU 160 of the IAB donor may signal communication link establishment via an F1 interface to IAB node (s) 104, and the IAB node (s) 104 may schedule transmissions (e.g., transmissions to the UEs 115 relayed from the IAB donor) through one or more DUs (e.g., DUs 165) . That is, data may be relayed to and from IAB node (s) 104 via signaling via an NR Uu interface to MT of IAB node (s) 104 (e.g., other IAB node (s) ) . Communications with IAB node (s) 104 may be scheduled by a DU 165 of the IAB donor or of IAB node (s) 104.
[0072] 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 techniques for PUCCH resource determination for Type-I CSI 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) .
[0073] 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.
[0074] 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.
[0075] 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) .
[0076] In some examples, such as in a carrier aggregation configuration, a carrier may have acquisition signaling or control signaling that coordinates operations for other carriers. A carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute RF channel number (EARFCN) ) and may be identified according to a channel raster for discovery by the UEs 115. A carrier may be operated in a standalone mode, in which case initial acquisition and connection may be conducted by the UEs 115 via the carrier, or the carrier may be operated in a non-standalone mode, in which case a connection is anchored using a different carrier (e.g., of the same or a different RAT) .
[0077] The communication link (s) 125 of the wireless communications system 100 may include downlink transmissions (e.g., forward link transmissions) from a network entity 105 to a UE 115, uplink transmissions (e.g., return link transmissions) from a UE 115 to a network entity 105, or both, among other configurations of transmissions. Carriers may carry downlink or uplink communications (e.g., in an FDD mode) or may be configured to carry downlink and uplink communications (e.g., in a TDD mode) .
[0078] A carrier may be associated with a particular bandwidth of the RF spectrum and, in some examples, the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system 100. For example, the carrier bandwidth may be one of a set of bandwidths for carriers of a particular RAT (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz) ) . Devices of the wireless communications system 100 (e.g., the network entities 105, the UEs 115, or both) may have hardware configurations that support communications using a particular carrier bandwidth or may be configurable to support communications using one of a set of carrier bandwidths. In some examples, the wireless communications system 100 may include network entities 105 or UEs 115 that support concurrent communications using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured for operating using portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth.
[0079] 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.
[0080] One or more numerologies for a carrier may be supported, and a numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.
[0081] 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) .
[0082] 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.
[0083] 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) ) .
[0084] 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) .
[0085] 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.
[0086] Some UEs 115, such as MTC or IoT devices, may be relatively low cost or low complexity devices and may provide for automated communication between machines (e.g., via Machine-to-Machine (M2M) communication) . M2M communication or MTC may refer to data communication technologies that allow devices to communicate with one another or a network entity 105 (e.g., a base station 140) without human intervention. In some examples, M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that uses the information or presents the information to humans interacting with the application program. Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.
[0087] Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communications (e.g., a mode that supports one-way communication via transmission or reception, but not transmission and reception concurrently) . In some examples, half-duplex communications may be performed at a reduced peak rate. Other power conservation techniques for the UEs 115 may include entering a power saving deep sleep mode when not engaging in active communications, operating using a limited bandwidth (e.g., according to narrowband communications) , or a combination of these techniques. For example, some UEs 115 may be configured for operation using a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs) ) within a carrier, within a guard-band of a carrier, or outside of a carrier.
[0088] 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.
[0089] 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.
[0090] In some systems, a D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs 115) . In some examples, vehicles may communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these. A vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to a V2X system. In some examples, vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., network entities 105, base stations 140, RUs 170) using vehicle-to-network (V2N) communications, or with both.
[0091] 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.
[0092] 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.
[0093] 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.
[0094] 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.
[0095] The network entities 105 or the UEs 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing. The multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords) . Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO) , for which multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO) , for which multiple spatial layers are transmitted to multiple devices.
[0096] 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) .
[0097] A network entity 105 or a UE 115 may use beam sweeping techniques as part of beamforming operations. For example, a network entity 105 (e.g., a base station 140, an RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a network entity 105 multiple times along different directions. For example, the network entity 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device, such as a network entity 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the network entity 105.
[0098] Some signals, such as data signals associated with a particular receiving device, may be transmitted by a transmitting device (e.g., a network entity 105 or a UE 115) along a single beam direction (e.g., a direction associated with the receiving device, such as another network entity 105 or UE 115) . In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted along one or more beam directions. For example, a UE 115 may receive one or more of the signals transmitted by the network entity 105 along different directions and may report to the network entity 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
[0099] In some examples, transmissions by a device (e.g., by a network entity 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from a network entity 105 to a UE 115) . The UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across a system bandwidth or one or more sub-bands. The network entity 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a CSI reference signal (CSI-RS) ) , which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) . Although these techniques are described with reference to signals transmitted along one or more directions by a network entity 105 (e.g., a base station 140, an RU 170) , a UE 115 may employ similar techniques for transmitting signals multiple times along different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal along a single direction (e.g., for transmitting data to a receiving device) .
[0100] A receiving device (e.g., a UE 115) may perform reception operations in accordance with multiple receive configurations (e.g., directional listening) when receiving various signals from a transmitting device (e.g., a network entity 105) , such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may perform reception in accordance with multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions. In some examples, a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) . The single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
[0101] The wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. An RLC layer may perform packet segmentation and reassembly to communicate via logical channels. A MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer also may implement error detection techniques, error correction techniques, or both to support retransmissions to improve link efficiency. In the control plane, an RRC layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a network entity 105 or a core network 130 supporting radio bearers for user plane data. A PHY layer may map transport channels to physical channels.
[0102] 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.
[0103] The respective devices of the wireless communications system 100 may support new rules and configurations for RI assumptions applied to CSI reports for the purposes of identifying PUCCH resources for UCI messages that include CSI reports. In particular, the wireless communications system 100 may support techniques and configurations for assuming RI values that are greater than one (e.g., assumed RI >1) for CSI reports, where the assumed RI values are used by UEs 115 to determine an “assumed” CSI payload size, generate CSI reports, and select PUCCH resources that will be used to communicate UCI messages that include the CSI reports. In some cases, the network may explicitly indicate an assumed RI value that is to be used by a UE 115 (e.g., RI=4) . In other cases, the assumed RI value may be based on (e.g., equal to) the maximum quantity of layers supported by a component carrier associated with the CSI report (e.g., the component carrier over which measurements for the CSI report were performed) . In some implementations, the network may indicate a codebook scheme for CSI reporting (e.g., Scheme A, Scheme B) , where the UE 115 may assume a RI value based on the codebook scheme (e.g., codebook-dependent RI assumptions) . For instance, the UE 115 may assume a RI value that will result in a maximum “assumed” payload size of the CSI report for the configured codebook scheme.
[0104] Techniques described herein may enable UEs 115 and the network to assume the same RI values for CSI reports, thereby enabling the UEs 115 and network to be on the same page with respect to which PUCCH resource (s) will be used to communicate UCI messages that include CSI reports. As such, techniques described herein may enable the network to more efficiently and reliably identify PUCCH resources that are used to receive UCI messages / CSI reports, thereby reducing or eliminating the need for the network to perform blind decoding to receive such UCI messages / CSI reports. As such, techniques described herein may reduce complexity and power consumption at the network.
[0105] FIG. 2 shows an example of a wireless communications system 200 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. In some examples, aspects of the wireless communications system 200 may implement, or be implemented by, aspects of the wireless communications system 100. In particular, the wireless communications system 200 may support techniques for RI assumptions used to identify PUCCH resources for CSI reports, as described herein.
[0106] The wireless communications system 200 may include a network entity 105-a and a UE 115-a, which may be examples of wireless devices as described herein. In some aspects, the network entity 105-a and the UE 115-a may communicate with one another using a communication link 205, which may be an example of an NR or LTE link, sidelink (e.g., PC5 link) , and the like, between the respective devices. In some cases, the communication link 205 may include an example of an access link (e.g., Uu link) which may include a bi-directional link that enables both uplink and downlink communication. For example, the UE 115-a may transmit uplink signals, such as uplink control signals or uplink data signals, to one or more components of the network entity 105-a using the communication link 205, and one or more components of the network entity 105-a may transmit downlink signals, such as downlink control signals or downlink data signals, to the UE 115-a using the communication link 205.
[0107] As noted previously herein, in some wireless communications systems, wireless devices (e.g., UE 115-a) may be configured with up to four PUCCH resource sets that are usable for transmitting UCI messages 235, such as HARQ feedback, scheduling requests, and CSI reports. That is, for HARQ feedback (or additionally multiplexed with other UCI) , the UE 115-a can be configured with up to four separate PUCCH resource sets. In some aspects, each of the configured PUCCH resource sets may be usable for transmitting UCI messages 235 with different payload sizes. In other words, the PUCCH resource sets may be differentiated by UCI payload size, as shown in Table 1 below
[0108] Table 1: UCI Payload Sizes for PUCCH Resource Sets
[0109] where OUCI indicates the payload size of a respective UCI message 235, and where N2 and N3 indicate payload size thresholds. The payload size thresholds N2 and N3 indicating the maximum payload sizes for the respective PUCCH resource sets may be pre-defined, or configured by the network (e.g., RRC-configured) . For example, as shown in Table 1, the first PUCCH resource set may be used to communicate UCI messages 235 with less than two bits, where the second PUCCH resource set may be used to communicate UCI messages 235 with more than two bits, but less than N2 bits.
[0110] UCI messages 235 may include various types of uplink data to be communicated to the network, such as HARQ feedback information (e.g., ACK / NACK) . In other cases, UCI messages 235 may include HARQ feedback information that is multiplexed with other types of information, such as scheduling requests, CSI information (e.g., CSI reports) , or both. As such, the total payload size of a UCI message 235 (OUCI) may be determined according to Equation 1 below: OUCI=OA / N+OSR+OCSI (1)
[0111] where OA / N indicates a payload size of HARQ feedback information within the UCI message 235, OSR indicates a payload size of scheduling request information within the UCI message 235, and OCSI indicates a payload size of CSI information (e.g., CSI report (s) ) within the UCI message 235.
[0112] Type-I CSI may include one-or two-part CSI, where one-part and two-part CSI is used for reporting CSI in different scenarios (e.g., based on which type of uplink resources are used to report the CSI) . For example, if CSI is reported on PUSCH resources, the CSI may be reported as a two-part CSI message, where the Part 1 is used to indicate the RI, a CSI-RS resource indictor (CRI) , and channel quality indicator (CQI) information (of the first codeword) , and where Part 2 is used to indicate a precoding matrix indicator (PMI) , CQI information (of the second codeword, if RI>4) , and layer indication (LI) information.
[0113] Comparatively, if CSI is reported on PUCCH resources, the CSI may be reported as either a one-part CSI message or a two-part CSI message. For example, a one-part CSI message may be reported on PUCCH resources for wideband CSI reporting (allowed for PUCCH formats 2 / 3 / 4) , where zero-padding may be required. By way of another example, a two-part CSI message may be reported on PUCCH resources for sub-band CSI reporting (allowed for long PUCCH formats 3 / 4) . In such cases, the two-part CSI format may take the same structure as descried above, with Part 1 including RI, CRI, and CQI of the first codeword, and with Part 2 including PMI, CQI of the second codeword (if RI>4) , and LI.
[0114] In order to determine which PUCCH resource should be used to transmit a UCI message 235, the UE 115-a may first determine the total UCI payload size OUCI (according to Equation 1) , where the total UCI payload size may then be used to determine which PUCCH resource set to use (according to Table 1) . Subsequently, the UE 115-a may determine which specific PUCCH resource (s) within the PUCCH resource set based on one or more DCI indicators, such as a PUCCH resource indicator (PRI) (e.g., 3-bits within a DCI message for up to 8 PUCCHs within a set) .
[0115] However, the payload size of a CSI report (OCSI) may not be known by the UE 115-a and network entity 105-a before the CSI is measured and reported, as CSI reports with different rank indicators (RIs) may have different payload sizes. Stated differently, CSI payload size (OCSI) can not be pre-known by the network before the UE 115-a measures and reports the CSI, as CSI with different RI values may have different payload sizes. In such cases, variations in the CSI payload size (and therefore variations in the UCI payload size) may require the network entity 105-a to perform blind decoding to receive and decode UCI messages 235, which may increase network complexity and processing.
[0116] For example, If CSI is reported as one-part CSI, zero-padding may be used to align a same payload size for different RIs. That is, zero-padding may be used to ensure CSI messages include a fixed payload size. Comparatively, if CSI is reported as two-part CSI, CSI Part 1 may have a fixed payload size, and a payload size of CSI Part 2 may be known by the network entity 105-a after decoding CSI Part 1. As such, two-part CSI may still result in a variable total UCI payload size (e.g., variable OUCI) . In this regard, the variable total UCI payload size may result in the network not knowing which PUCCH resources (e.g., which PUCCH resource set) will be used to communicate UCI messages 235, thereby requiring the network entity 105-a to perform blind decoding.
[0117] Therefore, some wireless communications systems have implemented various “rules” to avoid such blind decoding by the network. For example, to prevent such blind decoding, some wireless communications systems may have assumed a rank-1 (e.g., RI=1) for CSI reports, which corresponds to the maximum possible CSI payload size (maximum possible OCSI) . The assumption of rank-1 for CSI reports enables the UE 115-a and the network entity 105-a to assume a constant CSI payload size (in order to ensure all CSI data can be accommodated, regardless of the “actual” rank value) , thereby reducing the need for blind decoding at the network.
[0118] In other words, given that the main CSI is Type-I (UE mandatory, while Type-II is UE optional) , and given that Type-I CSI is designed as rank-1 with the largest payload size in some wireless networks, the UE 115-a may assume rank-1 payload size to determine a PUCCH resource (and PUCCH resource set) for a UCI message 235. For instance, in some networks, if a UE 115 would multiplex CSI reports that include Part 2 CSI reports in a PUCCH resource, the UE 115 may determine the PUCCH resource and a number of physical resource blocks (PRBs) for the PUCCH resource or a number of Part 2 CSI reports assuming that each of the CSI reports indicates rank 1. In such networks, by assuming RI=1, and thereby assuming the largest CSI payload size (OCSI) , the determined PUCCH resource can also guarantee reliability for smaller payload sizes (e.g., assuming / using the largest OCSI payload size ensures sufficient size for smaller CSI payloads) .
[0119] However, the assumption of rank-1 does not always result in the maximum possible CSI payload size for new CSI reporting schemes. In particular, for Type-I semi-persistent (SP) codebook refinement for 48, 64, and 128 CSI-RS ports, some wireless communications system may define UCI parameters according to codebook Scheme A and / or Scheme-B. Examples of codebook Schemes A and B for RI 1–4 are shown and described in Table 2 and Table 3 below, respectively:
[0120] Table 2: Codebook Scheme A for UCI / CSI Reporting
[0121] Table 3: Codebook Scheme B for UCI / CSI Reporting
[0122] where v denotes the RI, and where the second columns indicate the location of the respective parameters when reported with two-part UCI. In some aspects, the network may indicate (e.g., to the UE 115-a) which codebook scheme is to be used. In other words, the network may indicate whether the UE 115-a is to use Table 2 for codebook Scheme A, or Table 3 for codebook Scheme B.
[0123] In some wireless communications systems (e.g., systems that implement Scheme A and / or Scheme B) , for Type-I CSI, rank-1 may not always be associated with the largest payload size. Stated differently, the assumption of RI=1 used in some previous systems does not hold true for UCI / CSI reporting schemes used by some wireless networks. For example, in the context of Scheme B, due to layer-specific co-phase (QPSK with 2-bit) , the quantity of bits needed for sub-band co-phase with rank-v is defined by 2*v*Nsb, where Nsb denotes the quantity of sub-bands. In this example, for Nsb=10 (where Nsb can be at most 19) , rank=4 (e.g., RI / v =4) can have 60 bits larger than rank-1 for co-phase reporting. Moreover, with carrier aggregation (CA) , the difference in the quantity of bits may increase quickly with multiple CSI reports on different component carriers. Further, for both Scheme A and Scheme B, SD basis selection may also have variable payload size for different RI values. In this regard, if the UE 115-a were to determine a PUCCH resource assuming rank-1 (e.g., assumed RI=1) using Schemes A / B, but the actual measured RI for the CSI report is larger than 1, it would degrade the reliability of UCI message 235 transmission (or result in UCI omission due to exceeding maxCodeRate) .
[0124] To summarize, the assumption of rank-1 may no longer result in the maximum possible CSI payload size for new CSI reporting schemes (e.g., Scheme A and Scheme B) , which may result in the network having to omit some part of UCI messages 235 that include CSI reports.
[0125] Accordingly, aspects of the present disclosure are directed to new rules and configurations for RI assumptions applied to CSI reports for the purposes of identifying PUCCH resources for UCI messages 235 that include CSI reports. In particular, aspects of the present disclosure are directed to techniques for assuming RI values (e.g., assumed RI values 215) that are greater than one (e.g., assumed RI value 215 >1) for CSI reports, where the assumed RI values 215 are used by the UE 115-a (and the network entity 105-a) to determine an “assumed” CSI payload size, generate CSI reports, and select PUCCH resources that will be used to communicate UCI messages 235 that include the CSI reports.
[0126] In accordance with aspects of the present disclosure, when the UE 115-a determines a PUCCH resource 230 (and / or a quantity of RBs / PRBs to use with the PUCCH resource) for HARQ feedback multiplexed with Type-I CSI (with or without other UCI information, such as scheduling request or other CSI types / reports) , and where Type-I CSI is reported as two-part (e.g., sub-band CSI) , the UE 115-a may be configured to assume the corresponding RI having a value larger than 1 (e.g., use an assumed RI value 215 that is greater than 1) .
[0127] In some aspects, the assumed RI value 215 may be fixed, pre-configured, or otherwise defined in applicable standards associated with the network. For instance, the assumed RI value 215 may be configured as rank-4 (e.g., max payload size for Scheme-B) , or rank-2 / 3 (e.g., a “middle ground” for Scheme-B between rank-1 and rank-4) . In additional or alternative implementations, the assumed RI value 215 may be RRC-configured.
[0128] In some aspects, the assumed RI value 215 may also be determined based on a maximum quantity of layers (e.g., maxMIMO-Layers) associated with or supported by a component carrier in which the CSI is measured. For example, if a CSI report is generated for a component carrier with maxMIMO-Layers equal to 2, the assumed RI value 215 may be equal to two (no need to worry about the payload size of rank-4, as the component carrier only supports two layers) . The parameter maxMIMO-Layers may be determined according to RRC configuration (by the network entity 105-b) , according to UE-reported capabilities, or both.
[0129] For instance, the parameter maxMIMO-Layers may be denoted as vmax. In such cases, the UE-assumed RI value 215 may include a minimum value between vmax. and 4 (e.g., assumed RI value 215 = min (4, vmax) ) . Such a determination for the assumed RI value 215 may be made to identify the assumed RI value 215 with the maximum possible payload size, as described herein. However, it is noted herein that, for Scheme B, rank-5 to rank-8 are associated with smaller payload sizes than rank-4. in particular, in the context of Scheme B with RI=5–8, and for Type-I SP codebook refinement for 48, 64, and 128 CSI-RS ports, and for Type-I layer pairing scheme and fixed mapping between SD basis vectors and layers, the kth SD basis vector may be associated with the kth layer-group. This may be the baseline based on joint SD basis selection / indication using the agreed combinatorial indication ( bits) , where LSD denotes the number of selected SD bases ( for Scheme B codebook rank-5 to rank-8) . For instance, LSD=3 for RIs=5–6, and LSD=4 for RIs=7–8. Besides, for Scheme B, the sub-band co-phase of RI 5-8 is smaller than RI 1-4. For example, for RI 5 and 7 (respectively with LSD=3 or 4 layer groups) , for a layer group with 2 layers: 1-bit indicator { (1, -1) , (j, -j) } , while for a layer group with 1 orphan layer: 2-bit indicator {1, -1, j, -j} ; For rank 6 and 8 (respectively with LSD=3 or 4 layer groups) , 1-bit indicator { (1, -1) , (j, -j) } for each layer group of LSD=3 or 4 layer groups. Note that the above does not taken into account the CQI payload of the second codeword (wideband 4 bits, and per-sub-band 2 bits) for RI 5-8. But even with wideband and sub-band CQI payload size of the second codework, for Scheme B, RI 5 to 8 does not exceed the payload size of RI 4.
[0130] In additional or alternative implementations, the assumed RI value 215 may also be codebook-scheme-dependent (since the RI associated with a max payload size is different between Schemes A and B) . Further, in some cases, the assumed RI value 215 may be determined as the rank with the maximum possible payload size (which may be dependent on the indicated / activated codebook scheme) . In this regard, the UE 115-a may be configured with some “assumed RI configuration” that indicates various rules or conditions for determining the assumed RI value 215.
[0131] For example, as shown in FIG. 2, the UE 115-a may receive control signaling 210 from the network entity 105-a, where the control signaling 210 indicates a CSI reporting configuration for generating CSI reports. The control signaling 210 may include one or more control messages, such as RRC messages, DCI messages, MAC-CE messages, system information messages, or any combination thereof. In some aspects, the control signaling 210 may indicate other information that is usable for performing CSI reporting. For example, the control signaling 210 may configure the UE 115-a with a set of PUCCH resource sets, as shown in Table 1 above.
[0132] In other implementations, the control signaling 210 may indicate an assumed RI value 215 and / or a codebook scheme that is to be used for generating UCI messages 235, CSI reporting, or both. For example, the network entity 105-a may explicitly indicate that the UE 115-a is to use codebook Scheme A (Table 2) or codebook Scheme B (Table 3) for generating UCI messages 235 / CSI reports. In such cases, the assumed RI value 215 may be based on the indicated / activated codebook scheme (e.g., assumed RI value is codebook-dependent) .
[0133] By way of another example, the network entity 105-a may explicitly indicate an assumed RI value 215 that is to be used for CSI reporting, where the indicated assumed RI value 215 is greater than 1 (e.g., assumed RI value=4) . In other cases, the network entity 105-a may indicate an assumed RI configuration that includes rules / conditions for determining assumed RI values 215. For example, an assumed RI configuration may include a rule / condition that the assumed RI value 215 to be used for CSI reporting is assumed to be the RI value that results in the maximum possible CSI payload size. By way of another example, the assumed RI configuration may indicate that the assumed RI value 215 is based on a maximum quantity of layers supported by a component carrier in which CSI measurements are performed.
[0134] The UE 115-a, the network entity 105-a, or both, may identify an assumed RI value 215 for a CSI report, where the assumed RI value 215 is greater than one (e.g., assumed RI value 215 >1) . For instance, the assumed RI value 215 may be equal to four in some cases (e.g., assumed RI value 215=4) . The UE 115-a and / or the network entity 105-a may identify the assumed RI value 215 based on the control signaling 210.
[0135] For instance, the devices may determine the assumed RI value 215 in accordance with the CSI reporting configuration and / or assumed RI configuration indicated via the control signaling 210. By way of another example, as noted previously herein, the network entity 105-a may explicitly indicate the assumed RI value 215 via the control signaling 210. By way of another example, the assumed RI value 215 may be determined based on a maximum quantity of layers supported by a component carrier within which measurements of the CSI report were performed. For instance, the assumed RI value 215 may include a minimum value between four and the maximum quantity of layers supported by the component carrier.
[0136] In some aspects, the UE 115-a, the network entity 105-a, or both, may determine an “assumed CSI payload size 220” (e.g., OCSI) for a CSI report. The assumed CSI payload size 220 may be determined based on the assumed RI value 215. The CSI payload size 220 may be said to be “assumed” in that it may not equal the actual size of the CSI data. In particular, as described previously herein, the assumed RI value 215 may be determined to achieve a maximum possible payload size for a CSI report. As such, the “assumed CSI payload size 220” may be greater than the actual payload size of CSI data.
[0137] The devices may determine a UCI payload size (e.g., OUCI) for a UCI message 235 that is to include the CSI report. In particular, the devices may determine the UCI payload size 225 (OUSI) based on the assumed CSI payload size 220 (OCSI) and the assumed RI value 215 (e.g., according to Equation 1) .
[0138] Subsequently, the UE 115-a, the network entity 105-a, or both, may determine a PUCCH resource (s) 230 for transmitting the UCI message 235 / CSI report. That is, the devices may identify a PUCCH resource set (e.g., from Table 1) , and may identify specific PUCCH resource (s) 230 within the identified PUCCH resource set that will be used to communicate the UCI message 235 / CSI report (e.g., based on DCI indications) . The devices may determine the PUCCH resource 230 based on the control signaling 210, the assumed RI value 215, the assumed CSI payload size 220, and the UCI payload size 225.
[0139] As noted previously herein, PUCCH resource sets may be payload-size dependent. As such, the PUCCH resource (s) 230 used to transmit the UCI message 235 / CSI report may be based on the “assumed” CSI payload size 220 (OCSI) (which is based on the assumed RI value 215) of a CSI report, and the total UCI payload size 225 (OUSI) . For example, a quantity of PRBs of a PUCCH resource 230 that is to be used to transmit the UCI message 235 / CSI report may be determined based on the assumed RI value 215.
[0140] The UE 115-a may generate a CSI report in accordance with the CSI reporting configuration, and in accordance with the assumed RI value 215 and CSI payload size 220. Further, the UE 115-a may generate a UCI message 235 that is to be transmitted to the network entity 105-a. In some aspects, the UE 115-a may generate the UCI message 235 by multiplexing the CSI report with additional uplink data, such as HARQ feedback information, scheduling request information, or both.
[0141] The UE 115-a may transmit the UCI message 235 to the network entity 105-a, where the UCI message 235 includes the generated CSI report. In particular, the UE 115-a may transmit the UCI message 235 within the determined PUCCH resource (s) 230. In this regard, the UE 115-a may transmit (and the network entity 105-a may receive) the UCI message 235 based on the control signaling 210, the assumed RI value 215, the assumed CSI payload size 220, the UCI payload size 225, and the PUCCH resource (s) 230. In this regard, because the UE 115-a and the network entity 105-a may identify / determine the same assumed RI value 215, the network entity 105-a may be configured to identify (e.g., “know” ) which PUCCH resource (s) 230 will be used to transmit the UCI message 235 / CSI report, thereby preventing the need to perform blind decoding at the network entity 105-a.
[0142] In some aspects, the CSI reporting techniques described herein may be used for both sub-band and wideband reporting. In particular, according to some aspects of the present disclosure, for wideband CSI Type-I, since the UCI payload size 225 with different ranks can differ significantly, such wideband CSI may be reported as two-part CSI . For instance, take 2N1N2=128-port for example, per-layer SD selection may need bits, and rank-4 can have 6*3=18 more bits as compared to rank-1. In this regard, according to some aspects of the present disclosure, techniques described herein for assumed RI values 215 used to determine PUCCH resources 230 may be applied for Type-I CSI Scheme B codebook reported per-wideband (as two-part CSI) . For Scheme B wideband CSI, rank-4 also may have the largest payload size among rank-1 to rank-8. Accordingly, in some aspects, the devices may use an assumed RI value 215 of four for wideband CSI reporting with two-part CSI.
[0143] Comparatively, for Type-I CSI Scheme A codebook reported per-wideband, if maxMIMO-Layers is greater than 4 (e.g., vmax>4) , the CSI may be reported as two-part. For Scheme A with vmax≤4, CSI may still be reported as one-part CSI, since the UCI payload size 225 between rank-1 and rank-4 may be similar, thus can be reported as one-part with zero-padding to align as the same UCI payload size 225. Further, for Type-I CSI Scheme A codebook reported per-wideband (as two-part CSI) , the UE-assumed RI value 215 may be determined as rank-vmax if vmax>4 (as for the case if vmax≤4, it is one-part CSI) .
[0144] FIG. 3 shows an example of a resource configuration 300 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. In some examples, aspects of the resource configuration 300 may implement, or be implemented by, aspects of the wireless communications system 100, the wireless communications system 200, or both. In particular, the resource configuration 300 may support techniques for RI assumptions used to identify PUCCH resources for CSI reports, as described herein.
[0145] In particular, the resource configuration 300 includes spatial selection matrices 305-a, 305-b, 305-c that illustrate selection of SD basis vectors (e.g., first SD basis vector 310, second SD basis vector 315, third SD basis vector 320) for codebook Scheme A. SD basis vectors may refer to unit vectors that point in a specified direction, and may be used to represent vectors in three-dimensional space. SD basis vectors may be usable for directional beamforming (e.g., identifying spatial direction for beamforming) , and may additionally or alternatively be referred to as “SD beamforming bases. ” The respective SD basis vectors 310, 315, 320 may be selected from candidate SD vectors 325, 330 within the spatial selection matrices for the respective SD bases.
[0146] As noted previously herein, some wireless communications systems may utilize an assumed RI value equal to one (e.g., assumed RI value 215=rank-1) , where some aspects of the present disclosure are directed to utilization of an assumed RI value 215 that is greater than one. For example, in some cases, the assumed RI value 215 may be equal to rank-1 if maxMIMO-Layers is less than or equal to four (e.g., if vmax≤4) , where the assumed RI value 215 may be equal to vmax if maxMIMO-Layers greater than four (e.g., if vmax>4) .
[0147] According to Scheme A for rank-5 through rank-8, rank-5 and rank-6 may have the same payload size, where rank-7 and rank-8 may have the same payload size (e.g., payload size that is larger than rank-5 / 6, due to one more SD basis selection) , where any of rank-5 through rank–8 has a larger payload size than rank-1 (by approximately 10 to 20 bits) .
[0148] Referring to the resource configuration 300, in the context of Scheme A for RI values of 5 through 8, and for Type-I SP codebook refinement for 48, 64, and 128 CSI-RS ports, the UCI parameters for the selection scheme for the other Lother SD basis vectors (e.g., the second SD basis vector 315-a, 315-b and third SD basis vector 320-a, 320-b, besides the first SD basis vector 310) is based on a 1-bit beam group indicator i3∈{0, 1} . For each of the Lother other selected SD basis vectors (e.g., the second SD basis vector 315 and third SD basis vector 320) , if i3=0 (as shown in spatial selection matrix 305-b) , the second SD basis vector 315 and third SD basis vector 320 are selected based on and (q2) indicators, where q1 = mod (i1, O1) of the first SD basis vector 310. Comparatively, i3=1 (as shown in spatial selection matrix 305-c) , the second SD basis vector 315 and third SD basis vector 320 are selected based on and (q1) indicators, where q2 = mod (i2, O2) of the first SD basis vector 310. In such cases, (q1, q2) may be analogous to (q1, q2) for Type-II CSI, and Lother=2 (v=5 through 6) or 3 (v=7 through8) . The above has not taken into account the CQI payload of the second codeword (wideband 4 bits, and per-sub-band 2 bits) for RIs 5 through 8. With CQI payload of the second codeword taken into account, the payload size of Scheme A RI 5-8 would even be larger, and thus same conclusion: larger than Scheme A for RIs 1-through 4.
[0149] FIG. 4 shows an example of a process flow 400 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. In some examples, aspects of the process flow 400 may implement, or be implemented by, aspects of the wireless communications system 100, the wireless communications system 200, the resource configuration 300, or any combination thereof. In particular, the process flow 400 may support signaling and configurations for RI assumptions used to identify PUCCH resources for CSI reports, as described herein.
[0150] The process flow 400 includes a network entity 105-b and a UE 115-b, which may be examples of wireless devices as described herein. For example, the network entity 105-b and the UE 115-b illustrated in FIG. 4 may include examples of the network entity 105-a and the UE 115-a, respectively, as illustrated in FIG. 2.
[0151] In some examples, the operations illustrated in process flow 400 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. Alternative examples of the following may be implemented, where some steps are performed in a different order than described or are not performed at all. In some cases, steps may include additional features not mentioned below, or further steps may be added.
[0152] At 405, the UE 115-b may receive control signaling that indicates a CSI reporting configuration for generating CSI reports. The control signaling may include one or more control messages, such as RRC messages, DCI messages, MAC-CE messages, system information messages, or any combination thereof. In some aspects, the control signaling may indicate other information that is usable for performing CSI reporting. For example, the control signaling may configure the UE 115-b with a set of PUCCH resource sets, as shown in Table 1 above.
[0153] In other implementations, the control signaling may indicate an assumed RI value and / or a codebook scheme that is to be used for generating UCI messages, CSI reporting, or both. For example, the network entity 105-b may explicitly indicate that the UE 115-b is to use codebook Scheme A (Table 2) or codebook Scheme B (Table 3) for generating UCI messages / CSI reports. In such cases, the assumed RI value may be based on the indicated / activated codebook scheme (e.g., assumed RI value is codebook-dependent) .
[0154] By way of another example, the network entity 105-b may explicitly indicate an assumed RI value that is to be used for CSI reporting, where the indicated assumed RI value is greater than 1 (e.g., assumed RI value=4) . In other cases, the network may indicate an assumed RI configuration that includes rules / conditions for determining assumed RI values. For example, an assumed RI configuration may include a rule / condition that the assumed RI value to be used for CSI reporting is assumed to be the RI value that results in the maximum possible CSI payload size. By way of another example, the assumed RI configuration may indicate that the assumed RI value is based on a maximum quantity of layers supported by a component carrier in which CSI measurements are performed.
[0155] At 410, the UE 115-b may identify uplink data that is to be transmitted to the network entity 105-b. The uplink data may include HARQ feedback information (e.g., ACK / NACK) , scheduling request information, CSI information, or any combination thereof. For example, the UE 115-b may perform CSI measurements on one or more component carriers, and identify that the UE 115-b is to transmit a CSI report including the CSI measurements.
[0156] At 415, the UE 115-b, the network entity 105-b, or both, may identify an assumed RI value for a CSI report, where the assumed RI value is greater than one (e.g., assumed RI value >1) . For instance, the assumed RI value may be equal to four in some cases (e.g., assumed RI value=4) . The UE 115-b and / or the network entity 105-b may identify the assumed RI value based on the control signaling at 405.
[0157] For instance, the devices may determine the assumed RI value in accordance with the CSI reporting configuration and / or assumed RI configuration indicated via the control signaling at 405. By way of another example, as noted previously herein, the network entity 105-b may explicitly indicate the assumed RI value at 405. By way of another example, the assumed RI value may be determined based on a maximum quantity of layers supported by a component carrier within which measurements of the CSI report were performed. For instance, the assumed RI value may include a minimum value between four and the maximum quantity of layers supported by the component carrier.
[0158] At 420, the UE 115-b, the network entity 105-b, or both, may determine an payload size for a UCI message that is to include the CSI report. In particular, the devices may determine an “assumed” CSI payload size (OCSI) of a CSI report based on the assumed RI value determined at 415, and may determine the UCI payload size (OUSI) based on the CSI payload size (OCSI) and the assumed RI value (e.g., according to Equation 1) . In this regard, the devices may determine the CSI / UCI payload sizes at 420 based on the control signaling at 405, identifying the uplink data at 410, identifying the assumed RI value at 415, or any combination thereof.
[0159] At 425, the UE 115-b, the network entity 105-b, or both, may determine a PUCCH resource (s) for transmitting the UCI message / CSI report. That is, the devices may identify a PUCCH resource set (e.g., from Table 1) , and may identify specific PUCCH resource (s) within the identified PUCCH resource set that will be used to communicate the UCI message / CSI report (e.g., based on DCI indications) . The devices may determine the PUCCH resource at 425 based on the control signaling at 405, identifying the uplink data at 410, identifying the assumed RI value at 415, or any combination thereof.
[0160] As noted previously herein, PUCCH resource sets may be payload-size dependent. As such, the PUCCH resource (s) used to transmit UCI / CSI may be based on the “assumed” CSI payload size (OCSI) (which is based on the assumed RI value) of a CSI report, and the total UCI payload size (OUSI) . For example, a quantity of PRBs of an uplink channel resource that is to be used to transmit a UCI message / CSI report may be determined based on the assumed RI value.
[0161] At 430, the UE 115-b may generate a CSI report in accordance with the CSI reporting configuration. The CSI report may be generated to include the CSI data identified at 410. Moreover, the UE 115-b may generate the CSI report in accordance with the CSI reporting configuration indicated at 405, and in accordance with the assumed RI value and CSI payload size determined at 415 and 420.
[0162] At 435, the UE 115-b may generate a UCI message that is to be transmitted to the network entity 105-b. In some aspects, the UE 115-b may generate the UCI message by multiplexing the CSI report generated at 430 with additional uplink data, such as HARQ feedback information, scheduling request information, or both.
[0163] At 440, the UE 115-b may transmit the UCI message to the network entity 105-b, where the UCI message includes the CSI report generated at 430. In particular, the UE 115-b may transmit the UCI message within the PUCCH resource (s) determined at 425. In this regard, the UE 115-b may transmit (and the network entity 105-b may receive) the UCI message at 440 based on the control signaling at 405, identifying the assumed RI value and CSI / UCI payload sizes at 415 and 420, and determining the PUCCH resource (s) at 425. In this regard, because the UE 115-b and the network entity 105-b may identify / determine the same assumed RI value at 415, the network entity 105-b may be configured to identify (e.g., “know” ) which PUCCH resource (s) will be used to transmit the UCI message / CSI report, thereby preventing the need to perform blind decoding at the network entity 105-b.
[0164] FIG. 5 shows a block diagram 500 of a device 505 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. The device 505 may be an example of aspects of a UE 115 as described herein. The device 505 may include a receiver 510, a transmitter 515, and a communications manager 520. The device 505, or one or more components of the device 505 (e.g., the receiver 510, the transmitter 515, the communications manager 520) , 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) .
[0165] The receiver 510 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 techniques for PUCCH resource determination for Type-I CSI) . Information may be passed on to other components of the device 505. The receiver 510 may utilize a single antenna or a set of multiple antennas.
[0166] The transmitter 515 may provide a means for transmitting signals generated by other components of the device 505. For example, the transmitter 515 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 techniques for PUCCH resource determination for Type-I CSI) . In some examples, the transmitter 515 may be co-located with a receiver 510 in a transceiver module. The transmitter 515 may utilize a single antenna or a set of multiple antennas.
[0167] The communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be examples of means for performing various aspects of techniques for PUCCH resource determination for Type-I CSI as described herein. For example, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0168] In some examples, the communications manager 520, the receiver 510, the transmitter 515, 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) .
[0169] Additionally, or alternatively, the communications manager 520, the receiver 510, the transmitter 515, 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 520, the receiver 510, the transmitter 515, 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) .
[0170] In some examples, the communications manager 520 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 510, the transmitter 515, or both. For example, the communications manager 520 may receive information from the receiver 510, send information to the transmitter 515, or be integrated in combination with the receiver 510, the transmitter 515, or both to obtain information, output information, or perform various other operations as described herein.
[0171] For example, the communications manager 520 is capable of, configured to, or operable to support a means for receiving, from a network entity, control signaling indicating a CSI reporting configuration for transmitting a CSI report. The communications manager 520 is capable of, configured to, or operable to support a means for generating a CSI report in accordance with the CSI reporting configuration . The communications manager 520 is capable of, configured to, or operable to support a means for transmitting a UCI message including the CSI report via an uplink channel resource, where the uplink channel resource is determined based on an assumed RI value that is greater than one.
[0172] By including or configuring the communications manager 520 in accordance with examples as described herein, the device 505 (e.g., at least one processor controlling or otherwise coupled with the receiver 510, the transmitter 515, the communications manager 520, or a combination thereof) may support techniques that enable UEs 115 and the network to assume the same RI values for CSI reports, thereby enabling the UEs 115 and network to be on the same page with respect to which PUCCH resource (s) will be used to communicate UCI messages that include CSI reports. As such, techniques described herein may enable the network to more efficiently and reliably identify PUCCH resources that are used to receive UCI messages / CSI reports, thereby reducing or eliminating the need for the network to perform blind decoding to receive such UCI messages / CSI reports. As such, techniques described herein may reduce complexity and power consumption at the network.
[0173] FIG. 6 shows a block diagram 600 of a device 605 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. The device 605 may be an example of aspects of a device 505 or a UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. The device 605, or one or more components of the device 605 (e.g., the receiver 610, the transmitter 615, the communications manager 620) , 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) .
[0174] The receiver 610 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 techniques for PUCCH resource determination for Type-I CSI) . Information may be passed on to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.
[0175] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 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 techniques for PUCCH resource determination for Type-I CSI) . In some examples, the transmitter 615 may be co-located with a receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.
[0176] The device 605, or various components thereof, may be an example of means for performing various aspects of techniques for PUCCH resource determination for Type-I CSI as described herein. For example, the communications manager 620 may include a control signaling receiving manager 625, a CSI report manager 630, a UCI transmitting manager 635, or any combination thereof. The communications manager 620 may be an example of aspects of a communications manager 520 as described herein. In some examples, the communications manager 620, 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 610, the transmitter 615, or both. For example, the communications manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated in combination with the receiver 610, the transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.
[0177] The control signaling receiving manager 625 is capable of, configured to, or operable to support a means for receiving, from a network entity, control signaling indicating a CSI reporting configuration for transmitting a CSI report. The CSI report manager 630 is capable of, configured to, or operable to support a means for generating a CSI report in accordance with the CSI reporting configuration . The UCI transmitting manager 635 is capable of, configured to, or operable to support a means for transmitting a UCI message including the CSI report via an uplink channel resource, where the uplink channel resource is determined based on an assumed RI value that is greater than one.
[0178] FIG. 7 shows a block diagram 700 of a communications manager 720 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. The communications manager 720 may be an example of aspects of a communications manager 520, a communications manager 620, or both, as described herein. The communications manager 720, or various components thereof, may be an example of means for performing various aspects of techniques for PUCCH resource determination for Type-I CSI as described herein. For example, the communications manager 720 may include a control signaling receiving manager 725, a CSI report manager 730, a UCI transmitting manager 735, a codebook scheme manager 740, a PUCCH resource set manager 745, 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) .
[0179] The control signaling receiving manager 725 is capable of, configured to, or operable to support a means for receiving, from a network entity, control signaling indicating a CSI reporting configuration for transmitting a CSI report. The CSI report manager 730 is capable of, configured to, or operable to support a means for generating a CSI report in accordance with the CSI reporting configuration . The UCI transmitting manager 735 is capable of, configured to, or operable to support a means for transmitting a UCI message including the CSI report via an uplink channel resource, where the uplink channel resource is determined based on an assumed RI value that is greater than one.
[0180] In some examples, a quantity of PRBs of the uplink channel resource is determined based on the assumed RI value.
[0181] In some examples, the uplink channel resource and the quantity of PRBs of the uplink channel resource are determined based on a payload size associated with the assumed RI value.
[0182] In some examples, the control signaling receiving manager 725 is capable of, configured to, or operable to support a means for receiving, via the control signaling, an indication of the assumed RI value that is greater than one.
[0183] In some examples, the assumed RI value is determined based on a maximum quantity of layers supported by a component carrier within which measurements of the CSI report were performed.
[0184] In some examples, the assumed RI value includes a minimum value between four and the maximum quantity of layers supported by the component carrier.
[0185] In some examples, the assumed RI value is equal to the maximum quantity of layers supported by the component carrier based on the maximum quantity of layers supported by the component carrier being larger than four.
[0186] In some examples, the assumed RI value includes a RI value that is greater than one and that results in a maximum payload size of the CSI report.
[0187] In some examples, the assumed RI value is equal to four.
[0188] In some examples, the codebook scheme manager 740 is capable of, configured to, or operable to support a means for receiving, via the control signaling, an indication of a codebook scheme associated with the CSI reporting configuration, where the assumed RI value is based on the codebook scheme.
[0189] In some examples, the assumed RI value includes a RI value that results in a maximum payload size of the CSI report based on the codebook scheme.
[0190] In some examples, the CSI report includes a wideband, two-part CSI report.
[0191] In some examples, the CSI report is based on measurements performed within a component carrier. In some examples, a maximum quantity of layers supported by the component carrier is greater than four and. In some examples, the CSI report includes a wideband, two-part CSI report.
[0192] In some examples, the PUCCH resource set manager 745 is capable of, configured to, or operable to support a means for receiving an indication of a set of multiple uplink channel resource sets. In some examples, the PUCCH resource set manager 745 is capable of, configured to, or operable to support a means for selecting an uplink channel resource set from the set of multiple uplink channel resource sets based on a payload size associated with the assumed RI value, where the uplink channel resource is included within the selected uplink channel resource set.
[0193] In some examples, the UCI transmitting manager 735 is capable of, configured to, or operable to support a means for multiplexing the CSI report with additional uplink data to generate the UCI message, where the uplink channel resource is determined based on a payload size associated with the assumed RI value and an additional payload size of the additional uplink data, where the additional uplink data includes at least HARQ feedback information.
[0194] FIG. 8 shows a diagram of a system 800 including a device 805 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. The device 805 may be an example of or include components of a device 505, a device 605, or a UE 115 as described herein. The device 805 may communicate (e.g., wirelessly) with one or more other devices (e.g., network entities 105, UEs 115, or a combination thereof) . The device 805 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 820, an input / output (I / O) controller, such as an I / O controller 810, a transceiver 815, one or more antennas 825, at least one memory 830, code 835, and at least one processor 840. 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 845) .
[0195] The I / O controller 810 may manage input and output signals for the device 805. The I / O controller 810 may also manage peripherals not integrated into the device 805. In some cases, the I / O controller 810 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 810 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 810 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 810 may be implemented as part of one or more processors, such as the at least one processor 840. In some cases, a user may interact with the device 805 via the I / O controller 810 or via hardware components controlled by the I / O controller 810.
[0196] In some cases, the device 805 may include a single antenna. However, in some other cases, the device 805 may have more than one antenna, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 815 may communicate bi-directionally via the one or more antennas 825 using wired or wireless links as described herein. For example, the transceiver 815 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 815 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 825 for transmission, and to demodulate packets received from the one or more antennas 825. The transceiver 815, or the transceiver 815 and one or more antennas 825, may be an example of a transmitter 515, a transmitter 615, a receiver 510, a receiver 610, or any combination thereof or component thereof, as described herein.
[0197] The at least one memory 830 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 830 may store computer-readable, computer-executable, or processor-executable code, such as the code 835. The code 835 may include instructions that, when executed by the at least one processor 840, cause the device 805 to perform various functions described herein. The code 835 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 835 may not be directly executable by the at least one processor 840 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 830 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.
[0198] The at least one processor 840 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 840 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 840. The at least one processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks supporting techniques for PUCCH resource determination for Type-I CSI) . For example, the device 805 or a component of the device 805 may include at least one processor 840 and at least one memory 830 coupled with or to the at least one processor 840, the at least one processor 840 and the at least one memory 830 configured to perform various functions described herein.
[0199] In some examples, the at least one processor 840 may include multiple processors and the at least one memory 830 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 840 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 840) and memory circuitry (which may include the at least one memory 830) ) , 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 840 or a processing system including the at least one processor 840 may be configured to, configurable to, or operable to cause the device 805 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 835 (e.g., processor-executable code) stored in the at least one memory 830 or otherwise, to perform one or more of the functions described herein.
[0200] For example, the communications manager 820 is capable of, configured to, or operable to support a means for receiving, from a network entity, control signaling indicating a CSI reporting configuration for transmitting a CSI report. The communications manager 820 is capable of, configured to, or operable to support a means for generating a CSI report in accordance with the CSI reporting configuration . The communications manager 820 is capable of, configured to, or operable to support a means for transmitting a UCI message including the CSI report via an uplink channel resource, where the uplink channel resource is determined based on an assumed RI value that is greater than one.
[0201] By including or configuring the communications manager 820 in accordance with examples as described herein, the device 805 may support techniques that enable UEs 115 and the network to assume the same RI values for CSI reports, thereby enabling the UEs 115 and network to be on the same page with respect to which PUCCH resource (s) will be used to communicate UCI messages that include CSI reports. As such, techniques described herein may enable the network to more efficiently and reliably identify PUCCH resources that are used to receive UCI messages / CSI reports, thereby reducing or eliminating the need for the network to perform blind decoding to receive such UCI messages / CSI reports. As such, techniques described herein may reduce complexity and power consumption at the network.
[0202] In some examples, the communications manager 820 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 815, the one or more antennas 825, or any combination thereof. Although the communications manager 820 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 820 may be supported by or performed by the at least one processor 840, the at least one memory 830, the code 835, or any combination thereof. For example, the code 835 may include instructions executable by the at least one processor 840 to cause the device 805 to perform various aspects of techniques for PUCCH resource determination for Type-I CSI as described herein, or the at least one processor 840 and the at least one memory 830 may be otherwise configured to, individually or collectively, perform or support such operations.
[0203] FIG. 9 shows a block diagram 900 of a device 905 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. The device 905 may be an example of aspects of a network entity 105 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communications manager 920. The device 905, or one or more components of the device 905 (e.g., the receiver 910, the transmitter 915, the communications manager 920) , 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) .
[0204] The receiver 910 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 905. In some examples, the receiver 910 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 910 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0205] The transmitter 915 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 905. For example, the transmitter 915 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . In some examples, the transmitter 915 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 915 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 915 and the receiver 910 may be co-located in a transceiver, which may include or be coupled with a modem.
[0206] The communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be examples of means for performing various aspects of techniques for PUCCH resource determination for Type-I CSI as described herein. For example, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0207] In some examples, the communications manager 920, the receiver 910, the transmitter 915, 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 DSP, a CPU, an ASIC, an 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) .
[0208] Additionally, or alternatively, the communications manager 920, the receiver 910, the transmitter 915, 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 920, the receiver 910, the transmitter 915, 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) .
[0209] In some examples, the communications manager 920 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 910, the transmitter 915, or both. For example, the communications manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated in combination with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.
[0210] For example, the communications manager 920 is capable of, configured to, or operable to support a means for outputting, to a UE, control signaling indicating a CSI reporting configuration for transmitting a CSI report. The communications manager 920 is capable of, configured to, or operable to support a means for obtaining a UCI message including a CSI report via an uplink channel resource and in accordance with the CSI reporting configuration, where the uplink channel resource is determined based on an assumed RI value that is greater than one. The communications manager 920 is capable of, configured to, or operable to support a means for decoding the UCI message based on the assumed RI value.
[0211] By including or configuring the communications manager 920 in accordance with examples as described herein, the device 905 (e.g., at least one processor controlling or otherwise coupled with the receiver 910, the transmitter 915, the communications manager 920, or a combination thereof) may support techniques that enable UEs 115 and the network to assume the same RI values for CSI reports, thereby enabling the UEs 115 and network to be on the same page with respect to which PUCCH resource (s) will be used to communicate UCI messages that include CSI reports. As such, techniques described herein may enable the network to more efficiently and reliably identify PUCCH resources that are used to receive UCI messages / CSI reports, thereby reducing or eliminating the need for the network to perform blind decoding to receive such UCI messages / CSI reports. As such, techniques described herein may reduce complexity and power consumption at the network.
[0212] FIG. 10 shows a block diagram 1000 of a device 1005 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. The device 1005 may be an example of aspects of a device 905 or a network entity 105 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communications manager 1020. The device 1005, or one or more components of the device 1005 (e.g., the receiver 1010, the transmitter 1015, the communications manager 1020) , 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) .
[0213] The receiver 1010 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 1005. In some examples, the receiver 1010 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1010 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0214] The transmitter 1015 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1005. For example, the transmitter 1015 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . In some examples, the transmitter 1015 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1015 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1015 and the receiver 1010 may be co-located in a transceiver, which may include or be coupled with a modem.
[0215] The device 1005, or various components thereof, may be an example of means for performing various aspects of techniques for PUCCH resource determination for Type-I CSI as described herein. For example, the communications manager 1020 may include a control signaling outputting manager 1025, a UCI message obtaining manager 1030, a UCI decoding manager 1035, or any combination thereof. The communications manager 1020 may be an example of aspects of a communications manager 920 as described herein. In some examples, the communications manager 1020, 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 1010, the transmitter 1015, or both. For example, the communications manager 1020 may receive information from the receiver 1010, send information to the transmitter 1015, or be integrated in combination with the receiver 1010, the transmitter 1015, or both to obtain information, output information, or perform various other operations as described herein.
[0216] The control signaling outputting manager 1025 is capable of, configured to, or operable to support a means for outputting, to a UE, control signaling indicating a CSI reporting configuration for transmitting a CSI report. The UCI message obtaining manager 1030 is capable of, configured to, or operable to support a means for obtaining a UCI message including a CSI report via an uplink channel resource and in accordance with the CSI reporting configuration, where the uplink channel resource is determined based on an assumed RI value that is greater than one. The UCI decoding manager 1035 is capable of, configured to, or operable to support a means for decoding the UCI message based on the assumed RI value.
[0217] FIG. 11 shows a block diagram 1100 of a communications manager 1120 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. The communications manager 1120 may be an example of aspects of a communications manager 920, a communications manager 1020, or both, as described herein. The communications manager 1120, or various components thereof, may be an example of means for performing various aspects of techniques for PUCCH resource determination for Type-I CSI as described herein. For example, the communications manager 1120 may include a control signaling outputting manager 1125, a UCI message obtaining manager 1130, a UCI decoding manager 1135, a codebook scheme manager 1140, a PUCCH resource set manager 1145, 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) . The communications may include communications within a protocol layer of a protocol stack, communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualized component associated with a network entity 105, between devices, components, or virtualized components associated with a network entity 105) , or any combination thereof.
[0218] The control signaling outputting manager 1125 is capable of, configured to, or operable to support a means for outputting, to a UE, control signaling indicating a CSI reporting configuration for transmitting a CSI report. The UCI message obtaining manager 1130 is capable of, configured to, or operable to support a means for obtaining a UCI message including a CSI report via an uplink channel resource and in accordance with the CSI reporting configuration, where the uplink channel resource is determined based on an assumed RI value that is greater than one. The UCI decoding manager 1135 is capable of, configured to, or operable to support a means for decoding the UCI message based on the assumed RI value.
[0219] In some examples, a quantity of PRBs of the uplink channel resource is determined based on the assumed RI value.
[0220] In some examples, the uplink channel resource and the quantity of PRBs of the uplink channel resource are determined based on a payload size associated with the assumed RI value.
[0221] In some examples, the control signaling outputting manager 1125 is capable of, configured to, or operable to support a means for outputting, via the control signaling, an indication of the assumed RI value that is greater than one.
[0222] In some examples, the assumed RI value is determined based on a maximum quantity of layers supported by a component carrier within which measurements of the CSI report were performed.
[0223] In some examples, the assumed RI value includes a minimum value between four and the maximum quantity of layers supported by the component carrier.
[0224] In some examples, the assumed RI value is equal to the maximum quantity of layers supported by the component carrier based on the maximum quantity of layers supported by the component carrier being larger than four.
[0225] In some examples, the assumed RI value includes a RI value that is greater than one and that results in a maximum payload size of the CSI report.
[0226] In some examples, the assumed RI value is equal to four.
[0227] In some examples, the codebook scheme manager 1140 is capable of, configured to, or operable to support a means for outputting, via the control signaling, an indication of a codebook scheme associated with the CSI reporting configuration, where the assumed RI value is based on the codebook scheme.
[0228] In some examples, the assumed RI value includes a RI value that results in a maximum payload size of the CSI report based on the codebook scheme.
[0229] In some examples, the CSI report includes a wideband, two-part CSI report.
[0230] In some examples, the CSI report is based at least in part on measurements performed within a component carrier. In some examples, a maximum quantity of layers supported by the component carrier is greater than four and. In some examples, the CSI report includes a wideband, two-part CSI report.
[0231] In some examples, the PUCCH resource set manager 1145 is capable of, configured to, or operable to support a means for outputting an indication of a set of multiple uplink channel resource sets, where the uplink channel resource is included within an uplink channel resource set that is selected from the set of multiple uplink channel resource sets.
[0232] In some examples, the UCI message includes the CSI report that is multiplexed with additional uplink data. In some examples, the uplink channel resource is based on a payload size associated with the assumed RI value and an additional payload size of the additional uplink data. In some examples, the additional uplink data includes at least HARQ feedback information.
[0233] FIG. 12 shows a diagram of a system 1200 including a device 1205 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. The device 1205 may be an example of or include components of a device 905, a device 1005, or a network entity 105 as described herein. The device 1205 may communicate with other network devices or network equipment such as one or more of the network entities 105, UEs 115, or any combination thereof. The communications may include communications over one or more wired interfaces, over one or more wireless interfaces, or any combination thereof. The device 1205 may include components that support outputting and obtaining communications, such as a communications manager 1220, a transceiver 1210, one or more antennas 1215, at least one memory 1225, code 1230, and at least one processor 1235. 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 1240) .
[0234] The transceiver 1210 may support bi-directional communications via wired links, wireless links, or both as described herein. In some examples, the transceiver 1210 may include a wired transceiver and may communicate bi-directionally with another wired transceiver. Additionally, or alternatively, in some examples, the transceiver 1210 may include a wireless transceiver and may communicate bi-directionally with another wireless transceiver. In some examples, the device 1205 may include one or more antennas 1215, which may be capable of transmitting or receiving wireless transmissions (e.g., concurrently) . The transceiver 1210 may also include a modem to modulate signals, to provide the modulated signals for transmission (e.g., by one or more antennas 1215, by a wired transmitter) , to receive modulated signals (e.g., from one or more antennas 1215, from a wired receiver) , and to demodulate signals. In some implementations, the transceiver 1210 may include one or more interfaces, such as one or more interfaces coupled with the one or more antennas 1215 that are configured to support various receiving or obtaining operations, or one or more interfaces coupled with the one or more antennas 1215 that are configured to support various transmitting or outputting operations, or a combination thereof. In some implementations, the transceiver 1210 may include or be configured for coupling with one or more processors or one or more memory components that are operable to perform or support operations based on received or obtained information or signals, or to generate information or other signals for transmission or other outputting, or any combination thereof. In some implementations, the transceiver 1210, or the transceiver 1210 and the one or more antennas 1215, or the transceiver 1210 and the one or more antennas 1215 and one or more processors or one or more memory components (e.g., the at least one processor 1235, the at least one memory 1225, or both) , may be included in a chip or chip assembly that is installed in the device 1205. In some examples, the transceiver 1210 may be operable to support communications via one or more communications links (e.g., communication link (s) 125, backhaul communication link (s) 120, a midhaul communication link 162, a fronthaul communication link 168) .
[0235] The at least one memory 1225 may include RAM, ROM, or any combination thereof. The at least one memory 1225 may store computer-readable, computer-executable, or processor-executable code, such as the code 1230. The code 1230 may include instructions that, when executed by one or more of the at least one processor 1235, cause the device 1205 to perform various functions described herein. The code 1230 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1230 may not be directly executable by a processor of the at least one processor 1235 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1225 may include, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices. In some examples, the at least one processor 1235 may include multiple processors and the at least one memory 1225 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 herein (for example, as part of a processing system) .
[0236] The at least one processor 1235 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 1235 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into one or more of the at least one processor 1235. The at least one processor 1235 may be configured to execute computer-readable instructions stored in a memory (e.g., one or more of the at least one memory 1225) to cause the device 1205 to perform various functions (e.g., functions or tasks supporting techniques for PUCCH resource determination for Type-I CSI) . For example, the device 1205 or a component of the device 1205 may include at least one processor 1235 and at least one memory 1225 coupled with one or more of the at least one processor 1235, the at least one processor 1235 and the at least one memory 1225 configured to perform various functions described herein. The at least one processor 1235 may be an example of a cloud-computing platform (e.g., one or more physical nodes and supporting software such as operating systems, virtual machines, or container instances) that may host the functions (e.g., by executing code 1230) to perform the functions of the device 1205. The at least one processor 1235 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1205 (such as within one or more of the at least one memory 1225) .
[0237] In some examples, the at least one processor 1235 may include multiple processors and the at least one memory 1225 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 herein. In some examples, the at least one processor 1235 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 1235) and memory circuitry (which may include the at least one memory 1225) ) , 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 1235 or a processing system including the at least one processor 1235 may be configured to, configurable to, or operable to cause the device 1205 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 stored in the at least one memory 1225 or otherwise, to perform one or more of the functions described herein.
[0238] In some examples, a bus 1240 may support communications of (e.g., within) a protocol layer of a protocol stack. In some examples, a bus 1240 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack) , which may include communications performed within a component of the device 1205, or between different components of the device 1205 that may be co-located or located in different locations (e.g., where the device 1205 may refer to a system in which one or more of the communications manager 1220, the transceiver 1210, the at least one memory 1225, the code 1230, and the at least one processor 1235 may be located in one of the different components or divided between different components) .
[0239] In some examples, the communications manager 1220 may manage aspects of communications with a core network 130 (e.g., via one or more wired or wireless backhaul links) . For example, the communications manager 1220 may manage the transfer of data communications for client devices, such as one or more UEs 115. In some examples, the communications manager 1220 may manage communications with one or more other network entities 105, and may include a controller or scheduler for controlling communications with UEs 115 (e.g., in cooperation with the one or more other network devices) . In some examples, the communications manager 1220 may support an X2 interface within an LTE / LTE-A wireless communications network technology to provide communication between network entities 105.
[0240] For example, the communications manager 1220 is capable of, configured to, or operable to support a means for outputting, to a UE, control signaling indicating a CSI reporting configuration for transmitting a CSI report. The communications manager 1220 is capable of, configured to, or operable to support a means for obtaining a UCI message including a CSI report via an uplink channel resource and in accordance with the CSI reporting configuration, where the uplink channel resource is determined based on an assumed RI value that is greater than one. The communications manager 1220 is capable of, configured to, or operable to support a means for decoding the UCI message based on the assumed RI value.
[0241] By including or configuring the communications manager 1220 in accordance with examples as described herein, the device 1205 may support techniques that enable UEs 115 and the network to assume the same RI values for CSI reports, thereby enabling the UEs 115 and network to be on the same page with respect to which PUCCH resource (s) will be used to communicate UCI messages that include CSI reports. As such, techniques described herein may enable the network to more efficiently and reliably identify PUCCH resources that are used to receive UCI messages / CSI reports, thereby reducing or eliminating the need for the network to perform blind decoding to receive such UCI messages / CSI reports. As such, techniques described herein may reduce complexity and power consumption at the network.
[0242] In some examples, the communications manager 1220 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the transceiver 1210, the one or more antennas 1215 (e.g., where applicable) , or any combination thereof. Although the communications manager 1220 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1220 may be supported by or performed by the transceiver 1210, one or more of the at least one processor 1235, one or more of the at least one memory 1225, the code 1230, or any combination thereof (for example, by a processing system including at least a portion of the at least one processor 1235, the at least one memory 1225, the code 1230, or any combination thereof) . For example, the code 1230 may include instructions executable by one or more of the at least one processor 1235 to cause the device 1205 to perform various aspects of techniques for PUCCH resource determination for Type-I CSI as described herein, or the at least one processor 1235 and the at least one memory 1225 may be otherwise configured to, individually or collectively, perform or support such operations.
[0243] FIG. 13 shows a flowchart illustrating a method 1300 that supports techniques for PUCCH resource determination for Type-I CSI 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 8. 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.
[0244] At 1305, the method may include receiving, from a network entity, control signaling indicating a CSI reporting configuration for transmitting a CSI report. 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 control signaling receiving manager 725 as described with reference to FIG. 7.
[0245] At 1310, the method may include generating a CSI report in accordance with the CSI reporting configuration . 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 report manager 730 as described with reference to FIG. 7.
[0246] At 1315, the method may include transmitting a UCI message including the CSI report via an uplink channel resource, where the uplink channel resource is determined based on an assumed RI value that is greater than one. 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 UCI transmitting manager 735 as described with reference to FIG. 7.
[0247] FIG. 14 shows a flowchart illustrating a method 1400 that supports techniques for PUCCH resource determination for Type-I CSI in accordance with one or more aspects of the present disclosure. The operations of the method 1400 may be implemented by a network entity or its components as described herein. For example, the operations of the method 1400 may be performed by a network entity as described with reference to FIGs. 1 through 4 and 9 through 12. In some examples, a network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally, or alternatively, the network entity may perform aspects of the described functions using special-purpose hardware.
[0248] At 1405, the method may include outputting, to a UE, control signaling indicating a CSI reporting configuration for transmitting a CSI report. The operations of 1405 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed by a control signaling outputting manager 1125 as described with reference to FIG. 11.
[0249] At 1410, the method may include obtaining a UCI message including a CSI report via an uplink channel resource and in accordance with the CSI reporting configuration, where the uplink channel resource is determined based on an assumed RI value that is greater than one. The operations of 1410 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed by a UCI message obtaining manager 1130 as described with reference to FIG. 11.
[0250] At 1415, the method may include decoding the UCI message based on the assumed RI value. The operations of 1415 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed by a UCI decoding manager 1135 as described with reference to FIG. 11.
[0251] The following provides an overview of aspects of the present disclosure:
[0252] Aspect 1: A method for wireless communications at a UE, comprising: receiving, from a network entity, control signaling indicating a CSI reporting configuration for transmitting a CSI report; generating a CSI report in accordance with the CSI reporting configuration ; and transmitting a UCI message comprising the CSI report via an uplink channel resource, wherein the uplink channel resource is determined based at least in part on an assumed RI value that is greater than one.
[0253] Aspect 2: The method of aspect 1, wherein a quantity of PRBs of the uplink channel resource is determined based at least in part on the assumed RI value.
[0254] Aspect 3: The method of aspect 2, wherein the uplink channel resource and the quantity of PRBs of the uplink channel resource are determined based at least in part on a payload size associated with the assumed RI value.
[0255] Aspect 4: The method of any of aspects 1 through 3, further comprising: receiving, via the control signaling, an indication of the assumed RI value that is greater than one.
[0256] Aspect 5: The method of any of aspects 1 through 4, wherein the assumed RI value is determined based at least in part on a maximum quantity of layers supported by a component carrier within which measurements of the CSI report were performed.
[0257] Aspect 6: The method of aspect 5, wherein the assumed RI value comprises a minimum value between four and the maximum quantity of layers supported by the component carrier.
[0258] Aspect 7: The method of any of aspects 5 through 6, wherein the assumed RI value is equal to the maximum quantity of layers supported by the component carrier.
[0259] Aspect 8: The method of any of aspects 5 through 7, wherein the assumed RI value is equal to the maximum quantity of layers supported by the component carrier based at least in part on the maximum quantity of layers supported by the component carrier being larger than four.
[0260] Aspect 9: The method of any of aspects 1 through 8, wherein the assumed RI value comprises a RI value that is greater than one and that results in a maximum payload size of the CSI report.
[0261] Aspect 10: The method of any of aspects 1 through 9, wherein the assumed RI value is equal to four.
[0262] Aspect 11: The method of any of aspects 1 through 10, further comprising: receiving, via the control signaling, an indication of a codebook scheme associated with the CSI reporting configuration, wherein the assumed RI value is based at least in part on the codebook scheme.
[0263] Aspect 12: The method of aspect 11, wherein the assumed RI value comprises a RI value that results in a maximum payload size of the CSI report based at least in part on the codebook scheme.
[0264] Aspect 13: The method of any of aspects 1 through 12, wherein the CSI report comprises a wideband, two-part CSI report.
[0265] Aspect 14: The method of any of aspects 1 through 13, wherein measurements of the CSI report are performed within a component carrier, the CSI report comprises a wideband, two-part CSI report based at least in part on a maximum quantity of layers supported by the component carrier being greater than four.
[0266] Aspect 15: The method of any of aspects 1 through 14, further comprising: receiving an indication of a plurality of uplink channel resource sets; and selecting an uplink channel resource set from the plurality of uplink channel resource sets based at least in part on a payload size associated with the assumed RI value, wherein the uplink channel resource is included within the selected uplink channel resource set.
[0267] Aspect 16: The method of any of aspects 1 through 15, further comprising: multiplexing the CSI report with additional uplink data to generate the UCI message, wherein the uplink channel resource is determined based at least in part on a payload size associated with the assumed RI value and an additional payload size of the additional uplink data, wherein the additional uplink data comprises at least HARQ feedback information.
[0268] Aspect 17: A method for wireless communications at a network entity, comprising: outputting, to a UE, control signaling indicating a CSI reporting configuration for transmitting a CSI report; obtaining a UCI message comprising a CSI report via an uplink channel resource and in accordance with the CSI reporting configuration, wherein the uplink channel resource is determined based at least in part on an assumed RI value that is greater than one; and decoding the UCI message based at least in part on the assumed RI value.
[0269] Aspect 18: The method of aspect 17, wherein a quantity of PRBs of the uplink channel resource is determined based at least in part on the assumed RI value.
[0270] Aspect 19: The method of aspect 18, wherein the uplink channel resource and the quantity of PRBs of the uplink channel resource are determined based at least in part on a payload size associated with the assumed RI value.
[0271] Aspect 20: The method of any of aspects 17 through 19, further comprising: outputting, via the control signaling, an indication of the assumed RI value that is greater than one.
[0272] Aspect 21: The method of any of aspects 17 through 20, wherein the assumed RI value is determined based at least in part on a maximum quantity of layers supported by a component carrier within which measurements of the CSI report were performed.
[0273] Aspect 22: The method of aspect 21, wherein the assumed RI value comprises a minimum value between four and the maximum quantity of layers supported by the component carrier.
[0274] Aspect 23: The method of any of aspects 21 through 22, wherein the assumed RI value is equal to the maximum quantity of layers supported by the component carrier.
[0275] Aspect 24: The method of any of aspects 21 through 23, wherein the assumed RI value is equal to the maximum quantity of layers supported by the component carrier based at least in part on the maximum quantity of layers supported by the component carrier being larger than four.
[0276] Aspect 25: The method of any of aspects 17 through 24, wherein the assumed RI value comprises a RI value that is greater than one and that results in a maximum payload size of the CSI report.
[0277] Aspect 26: The method of any of aspects 17 through 25, wherein the assumed RI value is equal to four.
[0278] Aspect 27: The method of any of aspects 17 through 26, further comprising: outputting, via the control signaling, an indication of a codebook scheme associated with the CSI reporting configuration, wherein the assumed RI value is based at least in part on the codebook scheme.
[0279] Aspect 28: The method of aspect 27, wherein the assumed RI value comprises a RI value that results in a maximum payload size of the CSI report based at least in part on the codebook scheme.
[0280] Aspect 29: The method of any of aspects 17 through 28, wherein the CSI report comprises a wideband, two-part CSI report.
[0281] Aspect 30: The method of any of aspects 17 through 29, wherein measurements of the CSI report are performed within a component carrier, the CSI report comprises a wideband, two-part CSI report based at least in part on a maximum quantity of layers supported by the component carrier being greater than four.
[0282] Aspect 31: The method of any of aspects 17 through 30, further comprising: outputting an indication of a plurality of uplink channel resource sets, wherein the uplink channel resource is included within an uplink channel resource set that is selected from the plurality of uplink channel resource sets.
[0283] Aspect 32: The method of any of aspects 17 through 31, wherein the UCI message comprises the CSI report that is multiplexed with additional uplink data, the uplink channel resource is based at least in part on a payload size associated with the assumed RI value and an additional payload size of the additional uplink data, the additional uplink data comprises at least HARQ feedback information.
[0284] Aspect 33: A UE 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.
[0285] Aspect 34: A UE comprising at least one means for performing a method of any of aspects 1 through 16.
[0286] Aspect 35: A non-transitory computer-readable medium storing code the code comprising instructions executable by one or more processors to perform a method of any of aspects 1 through 16.
[0287] Aspect 36: A network entity 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 network entity to perform a method of any of aspects 17 through 32.
[0288] Aspect 37: A network entity comprising at least one means for performing a method of any of aspects 17 through 32.
[0289] Aspect 38: A non-transitory computer-readable medium storing code the code comprising instructions executable by one or more processors to perform a method of any of aspects 17 through 32.
[0290] 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.
[0291] 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.
[0292] 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.
[0293] 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 graphics processing unit (GPU) , a neural processing unit (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.
[0294] 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.
[0295] 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.
[0296] 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. ”
[0297] 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 “acomponent” 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. ”
[0298] 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.
[0299] 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.
[0300] 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.
[0301] 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, from a network entity, control signaling indicating a channel state information reporting configuration for transmitting a channel state information report;generate the channel state information report in accordance with the channel state information reporting configuration; andtransmit an uplink control information message comprising the channel state information report via an uplink channel resource, wherein the uplink channel resource is determined based at least in part on an assumed rank indicator value that is greater than one.2.The UE of claim 1, wherein a quantity of physical resource blocks (PRBs) of the uplink channel resource is determined based at least in part on the assumed rank indicator value.3.The UE of claim 2, wherein the uplink channel resource and the quantity of PRBs of the uplink channel resource are determined based at least in part on a payload size associated with the assumed rank indicator value.4.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, via the control signaling, an indication of the assumed rank indicator value that is greater than one.5.The UE of claim 1, wherein the assumed rank indicator value is determined based at least in part on a maximum quantity of layers supported by a component carrier within which measurements of the channel state information report were performed.6.The UE of claim 5, wherein the assumed rank indicator value comprises a minimum value between four and the maximum quantity of layers supported by the component carrier.7.The UE of claim 5, wherein the assumed rank indicator value is equal to the maximum quantity of layers supported by the component carrier.8.The UE of claim 5, wherein the assumed rank indicator value is equal to the maximum quantity of layers supported by the component carrier based at least in part on the maximum quantity of layers supported by the component carrier being larger than four.9.The UE of claim 1, wherein the assumed rank indicator value comprises a rank indicator value that is greater than one and that results in a maximum payload size of the channel state information report.10.The UE of claim 1, wherein the assumed rank indicator value is equal to four.11.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, via the control signaling, an indication of a codebook scheme associated with the channel state information reporting configuration, wherein the assumed rank indicator value is based at least in part on the codebook scheme.12.The UE of claim 11, wherein the assumed rank indicator value comprises a rank indicator value that results in a maximum payload size of the channel state information report based at least in part on the codebook scheme.13.The UE of claim 1, wherein the channel state information report comprises a wideband, two-part channel state information report.14.The UE of claim 1, wherein measurements of the channel state information report are performed within a component carrier, wherein the channel state information report comprises a wideband, two-part channel state information report based at least in part on a maximum quantity of layers supported by the component carrier being greater than four.15.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 an indication of a plurality of uplink channel resource sets; andselect an uplink channel resource set from the plurality of uplink channel resource sets based at least in part on a payload size associated with the assumed rank indicator value, wherein the uplink channel resource is included within the selected uplink channel resource set.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:multiplex the channel state information report with additional uplink data to generate the uplink control information message, wherein the uplink channel resource is determined based at least in part on a payload size associated with the assumed rank indicator value and an additional payload size of the additional uplink data, wherein the additional uplink data comprises at least hybrid automatic repeat request feedback information.17.A network entity, 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 network entity to:output, to a user equipment (UE) , control signaling indicating a channel state information reporting configuration for transmitting a channel state information report;obtain an uplink control information message comprising the channel state information report via an uplink channel resource and in accordance with the channel state information reporting configuration, wherein the uplink channel resource is determined based at least in part on an assumed rank indicator value that is greater than one; anddecode the uplink control information message based at least in part on the assumed rank indicator value.18.The network entity of claim 17, wherein a quantity of physical resource blocks (PRBs) of the uplink channel resource is determined based at least in part on the assumed rank indicator value.19.The network entity of claim 18, wherein the uplink channel resource and the quantity of PRBs of the uplink channel resource are determined based at least in part on a payload size associated with the assumed rank indicator value.20.The network entity of claim 17, wherein the one or more processors are individually or collectively further operable to execute the code to cause the network entity to:output, via the control signaling, an indication of the assumed rank indicator value that is greater than one.21.The network entity of claim 17, wherein the assumed rank indicator value is determined based at least in part on a maximum quantity of layers supported by a component carrier within which measurements of the channel state information report were performed.22.The network entity of claim 21, wherein the assumed rank indicator value comprises a minimum value between four and the maximum quantity of layers supported by the component carrier.23.The network entity of claim 21, wherein the assumed rank indicator value is equal to the maximum quantity of layers supported by the component carrier.24.The network entity of claim 21, wherein the assumed rank indicator value is equal to the maximum quantity of layers supported by the component carrier based at least in part on the maximum quantity of layers supported by the component carrier being larger than four.25.The network entity of claim 17, wherein the assumed rank indicator value comprises a rank indicator value that is greater than one and that results in a maximum payload size of the channel state information report.26.The network entity of claim 17, wherein the assumed rank indicator value is equal to four.27.The network entity of claim 17, wherein the one or more processors are individually or collectively further operable to execute the code to cause the network entity to:output, via the control signaling, an indication of a codebook scheme associated with the channel state information reporting configuration, wherein the assumed rank indicator value is based at least in part on the codebook scheme.28.The network entity of claim 27, wherein the assumed rank indicator value comprises a rank indicator value that results in a maximum payload size of the channel state information report based at least in part on the codebook scheme.29.The network entity of claim 17, wherein the channel state information report comprises a wideband, two-part channel state information report.30.The network entity of claim 17, wherein measurements of the channel state information report are performed within a component carrier, wherein the channel state information report comprises a wideband, two-part channel state information report based at least in part on a maximum quantity of layers supported by the component carrier being greater than four.31.The network entity of claim 17, wherein the one or more processors are individually or collectively further operable to execute the code to cause the network entity to:output an indication of a plurality of uplink channel resource sets, wherein the uplink channel resource is included within an uplink channel resource set that is selected from the plurality of uplink channel resource sets.32.The network entity of claim 17, wherein the uplink control information message comprises the channel state information report that is multiplexed with additional uplink data, wherein the uplink channel resource is based at least in part on a payload size associated with the assumed rank indicator value and an additional payload size of the additional uplink data, wherein the additional uplink data comprises at least hybrid automatic repeat request feedback information.33.A method for wireless communications at a user equipment (UE) , comprising:receiving, from a network entity, control signaling indicating a channel state information reporting configuration for transmitting a channel state information report;generating the channel state information report in accordance with the channel state information reporting configuration; andtransmitting an uplink control information message comprising the channel state information report via an uplink channel resource, wherein the uplink channel resource is determined based at least in part on an assumed rank indicator value that is greater than one.34.The method of claim 33, wherein a quantity of physical resource blocks (PRBs) of the uplink channel resource is determined based at least in part on the assumed rank indicator value.35.The method of claim 34, wherein the uplink channel resource and the quantity of PRBs of the uplink channel resource are determined based at least in part on a payload size associated with the assumed rank indicator value.36.The method of claim 33, further comprising:receiving, via the control signaling, an indication of the assumed rank indicator value that is greater than one.37.The method of claim 33, wherein the assumed rank indicator value is determined based at least in part on a maximum quantity of layers supported by a component carrier within which measurements of the channel state information report were performed.38.The method of claim 37, wherein the assumed rank indicator value comprises a minimum value between four and the maximum quantity of layers supported by the component carrier.39.The method of claim 37, wherein the assumed rank indicator value is equal to the maximum quantity of layers supported by the component carrier.40.The method of claim 37, wherein the assumed rank indicator value is equal to the maximum quantity of layers supported by the component carrier based at least in part on the maximum quantity of layers supported by the component carrier being larger than four.41.The method of claim 33, wherein the assumed rank indicator value comprises a rank indicator value that is greater than one and that results in a maximum payload size of the channel state information report.42.The method of claim 33, wherein the assumed rank indicator value is equal to four.43.The method of claim 33, further comprising:receiving, via the control signaling, an indication of a codebook scheme associated with the channel state information reporting configuration, wherein the assumed rank indicator value is based at least in part on the codebook scheme.44.The method of claim 43, wherein the assumed rank indicator value comprises a rank indicator value that results in a maximum payload size of the channel state information report based at least in part on the codebook scheme.45.The method of claim 33, wherein the channel state information report comprises a wideband, two-part channel state information report.46.The method of claim 33, wherein measurements of the channel state information report are performed within a component carrier, wherein the channel state information report comprises a wideband, two-part channel state information report based at least in part on a maximum quantity of layers supported by the component carrier being greater than four.47.The method of claim 33, further comprising:receiving an indication of a plurality of uplink channel resource sets; andselecting an uplink channel resource set from the plurality of uplink channel resource sets based at least in part on a payload size associated with the assumed rank indicator value, wherein the uplink channel resource is included within the selected uplink channel resource set.48.The method of claim 33, further comprising:multiplexing the channel state information report with additional uplink data to generate the uplink control information message, wherein the uplink channel resource is determined based at least in part on a payload size associated with the assumed rank indicator value and an additional payload size of the additional uplink data, wherein the additional uplink data comprises at least hybrid automatic repeat request feedback information.49.A method for wireless communications at a network entity, comprising:outputting, to a user equipment (UE) , control signaling indicating a channel state information reporting configuration for transmitting a channel state information report;obtaining an uplink control information message comprising the channel state information report via an uplink channel resource and in accordance with the channel state information reporting configuration, wherein the uplink channel resource is determined based at least in part on an assumed rank indicator value that is greater than one; anddecoding the uplink control information message based at least in part on the assumed rank indicator value.50.The method of claim 49, wherein a quantity of physical resource blocks (PRBs) of the uplink channel resource is determined based at least in part on the assumed rank indicator value.51.The method of claim 50, wherein the uplink channel resource and the quantity of PRBs of the uplink channel resource are determined based at least in part on a payload size associated with the assumed rank indicator value.52.The method of claim 49, further comprising:outputting, via the control signaling, an indication of the assumed rank indicator value that is greater than one.53.The method of claim 49, wherein the assumed rank indicator value is determined based at least in part on a maximum quantity of layers supported by a component carrier within which measurements of the channel state information report were performed.54.The method of claim 53, wherein the assumed rank indicator value comprises a minimum value between four and the maximum quantity of layers supported by the component carrier.55.The method of claim 53, wherein the assumed rank indicator value is equal to the maximum quantity of layers supported by the component carrier.56.The method of claim 53, wherein the assumed rank indicator value is equal to the maximum quantity of layers supported by the component carrier based at least in part on the maximum quantity of layers supported by the component carrier being larger than four.57.The method of claim 49, wherein the assumed rank indicator value comprises a rank indicator value that is greater than one and that results in a maximum payload size of the channel state information report.58.The method of claim 49, wherein the assumed rank indicator value is equal to four.59.The method of claim 49, further comprising:outputting, via the control signaling, an indication of a codebook scheme associated with the channel state information reporting configuration, wherein the assumed rank indicator value is based at least in part on the codebook scheme.60.The method of claim 59, wherein the assumed rank indicator value comprises a rank indicator value that results in a maximum payload size of the channel state information report based at least in part on the codebook scheme.61.The method of claim 49, wherein the channel state information report comprises a wideband, two-part channel state information report.62.The method of claim 49, wherein measurements of the channel state information report are performed within a component carrier, wherein the channel state information report comprises a wideband, two-part channel state information report based at least in part on a maximum quantity of layers supported by the component carrier being greater than four.63.The method of claim 49, further comprising:outputting an indication of a plurality of uplink channel resource sets, wherein the uplink channel resource is included within an uplink channel resource set that is selected from the plurality of uplink channel resource sets.64.The method of claim 49, wherein the uplink control information message comprises the channel state information report that is multiplexed with additional uplink data, wherein the uplink channel resource is based at least in part on a payload size associated with the assumed rank indicator value and an additional payload size of the additional uplink data, wherein the additional uplink data comprises at least hybrid automatic repeat request feedback information.65.A user equipment (UE) , comprising:means for receiving, from a network entity, control signaling indicating a channel state information reporting configuration for transmitting a channel state information report;means for generating the channel state information report in accordance with the channel state information reporting configuration; andmeans for transmitting an uplink control information message comprising the channel state information report via an uplink channel resource, wherein the uplink channel resource is determined based at least in part on an assumed rank indicator value that is greater than one.66.A network entity, comprising:means for outputting, to a user equipment (UE) , control signaling indicating a channel state information reporting configuration for transmitting a channel state information report;means for obtaining an uplink control information message comprising the channel state information report via an uplink channel resource and in accordance with the channel state information reporting configuration, wherein the uplink channel resource is determined based at least in part on an assumed rank indicator value that is greater than one; andmeans for decoding the uplink control information message based at least in part on the assumed rank indicator value.67.A non-transitory computer-readable medium storing code, the code comprising instructions executable by one or more processors to:receive, from a network entity, control signaling indicating a channel state information reporting configuration for transmitting a channel state information report;generate the channel state information report in accordance with the channel state information reporting configuration; andtransmit an uplink control information message comprising the channel state information report via an uplink channel resource, wherein the uplink channel resource is determined based at least in part on an assumed rank indicator value that is greater than one.68.A non-transitory computer-readable medium storing code, the code comprising instructions executable by one or more processors to:output, to a user equipment (UE) , control signaling indicating a channel state information reporting configuration for transmitting a channel state information report;obtain an uplink control information message comprising the channel state information report via an uplink channel resource and in accordance with the channel state information reporting configuration, wherein the uplink channel resource is determined based at least in part on an assumed rank indicator value that is greater than one; anddecode the uplink control information message based at least in part on the assumed rank indicator value.