CSI report not based on measured IMR or cmr
By decoupling CSI reports from measured resources in 5G NR wireless communication systems, the proposed solution reduces CSI-RS overhead, UE power consumption, and CSI latency, enhancing the efficiency of beam prediction and communication.
Patent Information
- Application Number
- PCT/CN2023/117198
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-09-06
- Publication Date
- 2025-03-13
AI Technical Summary
Current wireless communication systems, particularly in 5G NR, face challenges in reducing CSI-RS overhead, UE power consumption, and CSI latency, mainly due to the association of AP CSI reports with measured CMRs/IMRs, which results in high overhead and power consumption.
The proposed solution involves triggering CSI reports, such as AP, P, or SP CSI reports, without being associated with a measured CMR or IMR, thereby reducing the overhead and power consumption. This is achieved by enhancing the AP CSI report triggering framework, allowing the UE to predict quantities based on prediction targets separate from measured resources.
This approach effectively reduces CSI-RS overhead, UE power consumption, and CSI latency by decoupling CSI reports from measured resources, allowing for more efficient beam prediction and communication.
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Figure CN2023117198_13032025_PF_FP_ABST
Abstract
Description
CSI REPORT NOT BASED ON MEASURED IMR OR CMRTECHNICAL FIELD
[0001] The present disclosure relates generally to communication systems, and more particularly, to wireless communication systems with channel state information (CSI) report.
[0002] INTRODUCTION
[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.
[0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR) . 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT) ) , and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB) , massive machine type communications (mMTC) , and ultra-reliable low latency communications (URLLC) . Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies.
[0005] BRIEF SUMMARY
[0006] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects. This summary neither identifies key or critical elements of all aspects nor delineates the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
[0007] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus at a user equipment (UE) are provided. The apparatus may include at least one memory and at least one processor coupled to the at least one memory. Based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to receive, from a network node, downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report that is not associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) . In some aspects, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to receive, from a network node, downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) , where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. Based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to transmit the AP CSI report based on a timeline regulation associated with the AP CSI report.
[0008] In another aspect of the disclosure, a method, a computer-readable medium, and an apparatus at a network entity are provided. The apparatus may include at least one memory and at least one processor coupled to the at least one memory. Based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to transmit, for a user equipment (UE) , downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report that is not associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) . In some aspects, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to transmit, for a user equipment (UE) , downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) , where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. Based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to obtain the AP CSI report.
[0009] To the accomplishment of the foregoing and related ends, the one or more aspects include the features hereinafter fully described and particularly pointed out in the claims. The following description and the drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network.
[0011] FIG. 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure.
[0012] FIG. 2B is a diagram illustrating an example of downlink (DL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0013] FIG. 2C is a diagram illustrating an example of a second frame, in accordance with various aspects of the present disclosure.
[0014] FIG. 2D is a diagram illustrating an example of uplink (UL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0015] FIG. 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.
[0016] FIG. 4 is a diagram illustrating example beam management (BM) .
[0017] FIG. 5 is a diagram illustrating example timeline regulation associated with an AP CSI report with AP-CMR or AP-IMR.
[0018] FIG. 6 is a diagram illustrating example communications between a network node and a UE.
[0019] FIG. 7A is a diagram illustrating example AP CSI report not associated with a measured AP-CMR or a measured AP-IMR, where the measured AP-CMR or the measured AP-IMR may be transmitted or not transmitted.
[0020] FIG. 7B is a diagram illustrating example AP CSI report not associated with a measured AP-CMR or a measured AP-IMR, where the AP CSI report may be based on time occasion of a non-transmitted AP-CMR or a non-transmitted AP-IMR as if the AP-CMR or the AP-IMR is transmitted or based on a different prediction target.
[0021] FIG. 8 is a diagram illustrating example processing time associated with an AP CSI report with AP-CMR or AP-IMR.
[0022] FIG. 9 is a diagram illustrating example processing time associated with an AP CSI report not associated with a measured AP-CMR or a measured AP-IMR.
[0023] FIG. 10A is a diagram illustrating example DL grant DCI for triggering a CSI report.
[0024] FIG. 10B is a diagram illustrating example AP CSI report associated with a measured AP-CMR or a measured AP-IMR, where the AP CSI report may be based on a prediction target different from the measured AP-CMR or the measured AP-CMR.
[0025] FIG. 11 is a flowchart of a method of wireless communication.
[0026] FIG. 12 is a flowchart of a method of wireless communication.
[0027] FIG. 13 is a flowchart of a method of wireless communication.
[0028] FIG. 14 is a flowchart of a method of wireless communication.
[0029] FIG. 15 is a flowchart of a method of wireless communication.
[0030] FIG. 16 is a diagram illustrating an example of a hardware implementation for an example apparatus and / or network entity.
[0031] FIG. 17 is a diagram illustrating an example of a hardware implementation for an example network entity.DETAILED DESCRIPTION
[0032] The detailed description set forth below in connection with the drawings describes various configurations and does not represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, these concepts may be practiced without these specific details. In some instances, well known structures and components are shown in block diagram form in order to avoid obscuring such concepts.
[0033] Several aspects of telecommunication systems are presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements” ) . These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.
[0034] By way of example, an element, or any portion of an element, or any combination of elements may be implemented as a “processing system” that includes one or more processors. When multiple processors are implemented, the multiple processors may perform the functions individually or in combination. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs) , central processing units (CPUs) , application processors, digital signal processors (DSPs) , reduced instruction set computing (RISC) processors, systems on a chip (SoC) , baseband processors, field programmable gate arrays (FPGAs) , programmable logic devices (PLDs) , state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system may execute software. Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.
[0035] Accordingly, in one or more example aspects, implementations, and / or use cases, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media may be any available media that can be accessed by a computer. By way of example, such computer-readable media can include a random-access memory (RAM) , a read-only memory (ROM) , an electrically erasable programmable ROM (EEPROM) , optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.
[0036] While aspects, implementations, and / or use cases are described in this application by illustration to some examples, additional or different aspects, implementations and / or use cases may come about in many different arrangements and scenarios. Aspects, implementations, and / or use cases described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, aspects, implementations, and / or use cases may come about via integrated chip implementations and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, etc. ) . While some examples may or may not be specifically directed to use cases or applications, a wide assortment of applicability of described examples may occur. Aspects, implementations, and / or use cases may range a spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more techniques herein. In some practical settings, devices incorporating described aspects and features may also include additional components and features for implementation and practice of claimed and described aspect. For example, transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, RF-chains, power amplifiers, modulators, buffer, processor (s) , interleaver, adders / summers, etc. ) . Techniques described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc. of varying sizes, shapes, and constitution.
[0037] Deployment of communication systems, such as 5G NR systems, may be arranged in multiple manners with various components or constituent parts. In a 5G NR system, or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element, or a network equipment, such as a base station (BS) , or one or more units (or one or more components) performing base station functionality, may be implemented in an aggregated or disaggregated architecture. For example, a BS (such as a Node B (NB) , evolved NB (eNB) , NR BS, 5G NB, access point (AP) , a transmission reception point (TRP) , or a cell, etc. ) may be implemented as an aggregated base station (also known as a standalone BS or a monolithic BS) or a disaggregated base station.
[0038] An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A disaggregated base station may be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more central or centralized units (CUs) , one or more distributed units (DUs) , or one or more radio units (RUs) ) . In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other RAN nodes. The DUs may be implemented to communicate with one or more RUs. Each of the CU, DU and RU can be implemented as virtual units, i.e., a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) .
[0039] Base station operation or network design may consider aggregation characteristics of base station functionality. For example, disaggregated base stations may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance) ) , or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN) ) . Disaggregation may include distributing functionality across two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network design. The various units of the disaggregated base station, or disaggregated RAN architecture, can be configured for wired or wireless communication with at least one other unit.
[0040] Aspects provided herein may enable reducing CSI-RS overhead, such as AP-CSI-RS overhead, UE power consumption, and CSI latency via beam prediction. In some wireless communication systems, AP CSI reports are associated with CMRs / IMRs. However, there may be a large quantity of beams and different beams may be associated with different AP-CMRs such as AP-non-zero power (NZP) -CSI-RSs, overhead may be large. In addition, for a UE to measure the AP-CMRs, radio frequency (RF) components of the UE may be active, causing power consumption. In addition, due to having both reference symbol Zref and reference symbol Z′ref, CSI latency may be noticeable. To reduce CSI-RS overhead, UE power consumption, and CSI latency, aspects provided herein may provide triggering of CSI reports, such as AP, P, or SP CSI reports, without being associated with a measured CMR or a measured IMR.
[0041] FIG. 1 is a diagram 100 illustrating an example of a wireless communications system and an access network. The illustrated wireless communications system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that can communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units (such as a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) 125 via an E2 link, or a Non-Real Time (Non-RT) RIC 115 associated with a Service Management and Orchestration (SMO) Framework 105, or both) . A CU 110 may communicate with one or more DUs 130 via respective midhaul links, such as an F1 interface. The DUs 130 may communicate with one or more RUs 140 via respective fronthaul links. The RUs 140 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, the UE 104 may be simultaneously served by multiple RUs 140.
[0042] Each of the units, i.e., the CUs 110, the DUs 130, the RUs 140, as well as the Near-RT RICs 125, the Non-RT RICs 115, and the SMO Framework 105, may include one or more interfaces or be coupled to one or more interfaces configured to receive or to transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller providing instructions to the communication interfaces of the units, can be configured to communicate with one or more of the other units via the transmission medium. For example, the units can include a wired interface configured to receive or to transmit signals over a wired transmission medium to one or more of the other units. Additionally, the units can include a wireless interface, which may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) , configured to receive or to transmit signals, or both, over a wireless transmission medium to one or more of the other units.
[0043] In some aspects, the CU 110 may host one or more higher layer control functions. Such control functions can include radio resource control (RRC) , packet data convergence protocol (PDCP) , service data adaptation protocol (SDAP) , or the like. Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 110. The CU 110 may be configured to handle user plane functionality (i.e., Central Unit –User Plane (CU-UP) ) , control plane functionality (i.e., Central Unit –Control Plane (CU-CP) ) , or a combination thereof. In some implementations, the CU 110 can be logically split into one or more CU-UP units and one or more CU-CP units. The CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as an E1 interface when implemented in an O-RAN configuration. The CU 110 can be implemented to communicate with the DU 130, as necessary, for network control and signaling.
[0044] The DU 130 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 140. In some aspects, the DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation, demodulation, or the like) depending, at least in part, on a functional split, such as those defined by 3GPP. In some aspects, the DU 130 may further host one or more low PHY layers. Each layer (or module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 130, or with the control functions hosted by the CU 110.
[0045] Lower-layer functionality can be implemented by one or more RUs 140. In some deployments, an RU 140, controlled by a DU 130, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like) , or both, based at least in part on the functional split, such as a lower layer functional split. In such an architecture, the RU (s) 140 can be implemented to handle over the air (OTA) communication with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control and user plane communication with the RU (s) 140 can be controlled by the corresponding DU 130. In some scenarios, this configuration can enable the DU (s) 130 and the CU 110 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
[0046] The SMO Framework 105 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO Framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements that may be managed via an operations and maintenance interface (such as an O1 interface) . For virtualized network elements, the SMO Framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface) . Such virtualized network elements can include, but are not limited to, CUs 110, DUs 130, RUs 140 and Near-RT RICs 125. In some implementations, the SMO Framework 105 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 111, via an O1 interface. Additionally, in some implementations, the SMO Framework 105 can communicate directly with one or more RUs 140 via an O1 interface. The SMO Framework 105 also may include a Non-RT RIC 115 configured to support functionality of the SMO Framework 105.
[0047] The Non-RT RIC 115 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updates, or policy-based guidance of applications / features in the Near-RT RIC 125. The Non-RT RIC 115 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 125. The Near-RT RIC 125 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 110, one or more DUs 130, or both, as well as an O-eNB, with the Near-RT RIC 125.
[0048] In some implementations, to generate AI / ML models to be deployed in the Near-RT RIC 125, the Non-RT RIC 115 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 125 and may be received at the SMO Framework 105 or the Non-RT RIC 115 from non-network data sources or from network functions. In some examples, the Non-RT RIC 115 or the Near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 115 may monitor long-term trends and patterns for performance and employ AI / ML models to perform corrective actions through the SMO Framework 105 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies) .
[0049] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Accordingly, a base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component indicated with dotted lines to signify that each component may or may not be included in the base station 102) . The base station 102 provides an access point to the core network 120 for a UE 104. The base station 102 may include macrocells (high power cellular base station) and / or small cells (low power cellular base station) . The small cells include femtocells, picocells, and microcells. A network that includes both small cell and macrocells may be known as a heterogeneous network. A heterogeneous network may also include Home Evolved Node Bs (eNBs) (HeNBs) , which may provide service to a restricted group known as a closed subscriber group (CSG) . The communication links between the RUs 140 and the UEs 104 may include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to an RU 140 and / or downlink (DL) (also referred to as forward link) transmissions from an RU 140 to a UE 104. The communication links may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication links may be through one or more carriers. The base station 102 / UEs 104 may use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction. The carriers may or may not be adjacent to each other. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL than for UL) . The component carriers may include a primary component carrier and one or more secondary component carriers. A primary component carrier may be referred to as a primary cell (PCell) and a secondary component carrier may be referred to as a secondary cell (SCell) .
[0050] Certain UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. The D2D communication link 158 may use the DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , and a physical sidelink control channel (PSCCH) . D2D communication may be through a variety of wireless D2D communications systems, such as for example, BluetoothTM (Bluetooth is a trademark of the Bluetooth Special Interest Group (SIG) ) , Wi-FiTM (Wi-Fi is a trademark of the Wi-Fi Alliance) based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.
[0051] The wireless communications system may further include a Wi-Fi AP 150 in communication with UEs 104 (also referred to as Wi-Fi stations (STAs) ) via communication link 154, e.g., in a 5 GHz unlicensed frequency spectrum or the like. When communicating in an unlicensed frequency spectrum, the UEs 104 / AP 150 may perform a clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available.
[0052] The electromagnetic spectrum is often subdivided, based on frequency / wavelength, into various classes, bands, channels, etc. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz –7.125 GHz) and FR2 (24.25 GHz –52.6 GHz) . Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with regard to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz –300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
[0053] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have identified an operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz –24.25 GHz) . Frequency bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and thus may effectively extend features of FR1 and / or FR2 into mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6 GHz –71 GHz) , FR4 (71 GHz –114.25 GHz) , and FR5 (114.25 GHz –300 GHz) . Each of these higher frequency bands falls within the EHF band.
[0054] With the above aspects in mind, unless specifically stated otherwise, the term “sub-6 GHz” or the like if used herein may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Further, unless specifically stated otherwise, the term “millimeter wave” or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.
[0055] The base station 102 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming. The base station 102 may transmit a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also transmit a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the best receive and transmit directions for each of the base station 102 / UE 104. The transmit and receive directions for the base station 102 may or may not be the same. The transmit and receive directions for the UE 104 may or may not be the same.
[0056] The base station 102 may include and / or be referred to as a gNB, Node B, eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , a TRP, network node, network entity, network equipment, or some other suitable terminology. The base station 102 can be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and an RU, or as a disaggregated base station including one or more of a CU, a DU, and / or an RU. The set of base stations, which may include disaggregated base stations and / or aggregated base stations, may be referred to as next generation (NG) RAN (NG-RAN) .
[0057] The core network 120 may include an Access and Mobility Management Function (AMF) 161, a Session Management Function (SMF) 162, a User Plane Function (UPF) 163, a Unified Data Management (UDM) 164, one or more location servers 168, and other functional entities. The AMF 161 is the control node that processes the signaling between the UEs 104 and the core network 120. The AMF 161 supports registration management, connection management, mobility management, and other functions. The SMF 162 supports session management and other functions. The UPF 163 supports packet routing, packet forwarding, and other functions. The UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identification handling, access authorization, and subscription management. The one or more location servers 168 are illustrated as including a Gateway Mobile Location Center (GMLC) 165 and a Location Management Function (LMF) 166. However, generally, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, the LMF 166, a position determination entity (PDE) , a serving mobile location center (SMLC) , a mobile positioning center (MPC) , or the like. The GMLC 165 and the LMF 166 support UE location services. The GMLC 165 provides an interface for clients / applications (e.g., emergency services) for accessing UE positioning information. The LMF 166 receives measurements and assistance information from the NG-RAN and the UE 104 via the AMF 161 to compute the position of the UE 104. The NG-RAN may utilize one or more positioning methods in order to determine the position of the UE 104. Positioning the UE 104 may involve signal measurements, a position estimate, and an optional velocity computation based on the measurements. The signal measurements may be made by the UE 104 and / or the base station 102 serving the UE 104. The signals measured may be based on one or more of a satellite positioning system (SPS) 170 (e.g., one or more of a Global Navigation Satellite System (GNSS) , global position system (GPS) , non-terrestrial network (NTN) , or other satellite position / location system) , LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS) , sensor-based information (e.g., barometric pressure sensor, motion sensor) , NR enhanced cell ID (NR E-CID) methods, NR signals (e.g., multi-round trip time (Multi-RTT) , DL angle-of-departure (DL-AoD) , DL time difference of arrival (DL-TDOA) , UL time difference of arrival (UL-TDOA) , and UL angle-of-arrival (UL-AoA) positioning) , and / or other systems / signals / sensors.
[0058] Examples of UEs 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA) , a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player) , a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similar functioning device. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc. ) . The UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. In some scenarios, the term UE may also apply to one or more companion devices such as in a device constellation arrangement. One or more of these devices may collectively access the network and / or individually access the network.
[0059] Referring again to FIG. 1, in some aspects, the UE 104 may include a CSI component 198. In some aspects, the CSI component 198 may be configured to receive, from a network node, downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report that is not associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) . In some aspects, the CSI component 198 may be further configured to receive, from a network node, DCI triggering an AP CSI report associated with a measured CMR or a measured IMR, where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. In some aspects, the CSI component 198 may be further configured to transmit the AP CSI report based on a timeline regulation associated with the AP CSI report.
[0060] In certain aspects, the base station 102 may include a CSI component 199. In some aspects, the CSI component 199 may be configured to transmit, for a UE, DCI triggering an AP CSI report that is not associated with a measured CMR or a measured IMR. In some aspects, the CSI component 199 may be further configured to transmit, for a UE, DCI triggering an AP CSI report associated with a measured CMR or a measured IMR, where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. In some aspects, the CSI component 199 may be further configured to obtain the AP CSI report.
[0061] Although the following description may be focused on 5G NR, the concepts described herein may be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.
[0062] As described herein, a node (which may be referred to as a node, a network node, a network entity, or a wireless node) may include, be, or be included in (e.g., be a component of) a base station (e.g., any base station described herein) , a UE (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, an integrated access and backhauling (IAB) node, a distributed unit (DU) , a central unit (CU) , a remote / radio unit (RU) (which may also be referred to as a remote radio unit (RRU) ) , and / or another processing entity configured to perform any of the techniques described herein. For example, a network node may be a UE. As another example, a network node may be a base station or network entity. As another example, a first network node may be configured to communicate with a second network node or a third network node. In one aspect of this example, the first network node may be a UE, the second network node may be a base station, and the third network node may be a UE. In another aspect of this example, the first network node may be a UE, the second network node may be a base station, and the third network node may be a base station. In yet other aspects of this example, the first, second, and third network nodes may be different relative to these examples. Similarly, reference to a UE, base station, apparatus, device, computing system, or the like may include disclosure of the UE, base station, apparatus, device, computing system, or the like being a network node. For example, disclosure that a UE is configured to receive information from a base station also discloses that a first network node is configured to receive information from a second network node. Consistent with this disclosure, once a specific example is broadened in accordance with this disclosure (e.g., a UE is configured to receive information from a base station also discloses that a first network node is configured to receive information from a second network node) , the broader example of the narrower example may be interpreted in the reverse, but in a broad open-ended way. In the example above where a UE is configured to receive information from a base station also discloses that a first network node is configured to receive information from a second network node, the first network node may refer to a first UE, a first base station, a first apparatus, a first device, a first computing system, a first set of one or more one or more components, a first processing entity, or the like configured to receive the information; and the second network node may refer to a second UE, a second base station, a second apparatus, a second device, a second computing system, a second set of one or more components, a second processing entity, or the like.
[0063] As described herein, communication of information (e.g., any information, signal, or the like) may be described in various aspects using different terminology. Disclosure of one communication term includes disclosure of other communication terms. For example, a first network node may be described as being configured to transmit information to a second network node. In this example and consistent with this disclosure, disclosure that the first network node is configured to transmit information to the second network node includes disclosure that the first network node is configured to provide, send, output, communicate, or transmit information to the second network node. Similarly, in this example and consistent with this disclosure, disclosure that the first network node is configured to transmit information to the second network node includes disclosure that the second network node is configured to receive, obtain, or decode the information that is provided, sent, output, communicated, or transmitted by the first network node.
[0064] FIG. 2A is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure. FIG. 2B is a diagram 230 illustrating an example of DL channels within a 5G NR subframe. FIG. 2C is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure. FIG. 2D is a diagram 280 illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplexed (FDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for either DL or UL, or may be time division duplexed (TDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for both DL and UL. In the examples provided by FIGs. 2A, 2C, the 5G NR frame structure is assumed to be TDD, with subframe 4 being configured with slot format 28 (with mostly DL) , where D is DL, U is UL, and F is flexible for use between DL / UL, and subframe 3 being configured with slot format 1 (with all UL) . While subframes 3, 4 are shown with slot formats 1, 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols. UEs are configured with the slot format (dynamically through DL control information (DCI) , or semi-statically / statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI) . Note that the description infra applies also to a 5G NR frame structure that is TDD.
[0065] FIGs. 2A-2D illustrate a frame structure, and the aspects of the present disclosure may be applicable to other wireless communication technologies, which may have a different frame structure and / or different channels. A frame (10 ms) may be divided into 10 equally sized subframes (1 ms) . Each subframe may include one or more time slots. Subframes may also include mini-slots, which may include 7, 4, or 2 symbols. Each slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For normal CP, each slot may include 14 symbols, and for extended CP, each slot may include 12 symbols. The symbols on DL may be CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbols. The symbols on UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (for power limited scenarios; limited to a single stream transmission) . The number of slots within a subframe is based on the CP and the numerology. The numerology defines the subcarrier spacing (SCS) (see Table 1) . The symbol length / duration may scale with 1 / SCS.
[0066] Table 1: Numerology, SCS, and CP
[0067] For normal CP (14 symbols / slot) , different numerologies μ 0 to 4 allow for 1, 2, 4, 8, and 16 slots, respectively, per subframe. For extended CP, the numerology 2 allows for 4 slots per subframe. Accordingly, for normal CP and numerology μ, there are 14 symbols / slot and 2μ slots / subframe. The subcarrier spacing may be equal to 2μ*15 kHz, where μ is the numerology 0 to 4. As such, the numerology μ=0 has a subcarrier spacing of 15 kHz and the numerology μ=4 has a subcarrier spacing of 240 kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIGs. 2A-2D provide an example of normal CP with 14 symbols per slot and numerology μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a set of frames, there may be one or more different bandwidth parts (BWPs) (see FIG. 2B) that are frequency division multiplexed. Each BWP may have a particular numerology and CP (normal or extended) .
[0068] A resource grid may be used to represent the frame structure. Each time slot includes a resource block (RB) (also referred to as physical RBs (PRBs) ) that extends 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs) . The number of bits carried by each RE depends on the modulation scheme.
[0069] As illustrated in FIG. 2A, some of the REs carry reference (pilot) signals (RS) for the UE.The RS may include demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS may also include beam measurement RS (BRS) , beam refinement RS (BRRS) , and phase tracking RS (PT-RS) .
[0070] FIG. 2B illustrates an example of various DL channels within a subframe of a frame. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs) , each CCE including six RE groups (REGs) , each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within one BWP may be referred to as a control resource set (CORESET) . A UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., common search space, UE-specific search space) during PDCCH monitoring occasions on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at greater and / or lower frequencies across the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe / symbol timing and a physical layer identity. A secondary synchronization signal (SSS) may be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine a physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine a physical cell identifier (PCI) . Based on the PCI, the UE can determine the locations of the DM-RS. The physical broadcast channel (PBCH) , which carries a master information block (MIB) , may be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as SS block (SSB) ) . The MIB provides a number of RBs in the system bandwidth and a system frame number (SFN) . The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) , and paging messages.
[0071] As illustrated in FIG. 2C, some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH) . The PUSCH DM-RS may be transmitted in the first one or two symbols of the PUSCH. The PUCCH DM-RS may be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used. The UE may transmit sounding reference signals (SRS) . The SRS may be transmitted in the last symbol of a subframe. The SRS may have a comb structure, and a UE may transmit SRS on one of the combs. The SRS may be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.
[0072] FIG. 2D illustrates an example of various UL channels within a subframe of a frame. The PUCCH may be located as indicated in one configuration. The PUCCH carries uplink control information (UCI) , such as scheduling requests, a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a rank indicator (RI) , and hybrid automatic repeat request (HARQ) acknowledgment (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACK and / or negative ACK (NACK) ) . The PUSCH carries data, and may additionally be used to carry a buffer status report (BSR) , a power headroom report (PHR) , and / or UCI.
[0073] FIG. 3 is a block diagram of a base station 310 in communication with a UE 350 in an access network. In the DL, Internet protocol (IP) packets may be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIBs) , RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release) , inter radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (ciphering, deciphering, integrity protection, integrity verification) , and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs) , error correction through ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs) , re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs) , demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
[0074] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding / decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK) , quadrature phase-shift keying (QPSK) , M-phase-shift keying (M-PSK) , M-quadrature amplitude modulation (M-QAM) ) . The coded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and / or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation scheme, as well as for spatial processing. The channel estimate may be derived from a reference signal and / or channel condition feedback transmitted by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier with a respective spatial stream for transmission.
[0075] At the UE 350, each receiver 354Rx receives a signal through its respective antenna 352. Each receiver 354Rx recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT) . The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, and the reference signal, are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions may be based on channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.
[0076] The controller / processor 359 can be associated with at least one memory 360 that stores program codes and data. The at least one memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0077] Similar to the functionality described in connection with the DL transmission by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression / decompression, and security (ciphering, deciphering, integrity protection, integrity verification) ; RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
[0078] Channel estimates derived by a channel estimator 358 from a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes, and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antenna 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a respective spatial stream for transmission.
[0079] The UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 350. Each receiver 318Rx receives a signal through its respective antenna 320. Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to a RX processor 370.
[0080] The controller / processor 375 can be associated with at least one memory 376 that stores program codes and data. The at least one memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0081] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform aspects in connection with CSI component 198 of FIG. 1.
[0082] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform aspects in connection with CSI component 199 of FIG. 1.
[0083] FIG. 4 is a diagram 400 illustrating example beam management (BM) . As illustrated in FIG. 4, a UE at 410 may be in an RRC inactive state or RRC idle state and tracking reference signal (TRS) for RRC inactive state or RRC idle state may be configured for the UE. At 420, the UE may perform initial access with a network node. During the initial access, there may be SSB (wide) beam sweeping and the initial access at 410 may be contention based random access (CBRA) with random access preamble and PRACH occasions (RO) associated with SSBs. Once the connection is established and the UE enters an RRC connected state, at 430, BM in the RRC connected state may be performed. There may be different types of BM that may be co-existing. In a first type of BM which may be based on various downlink beam management mechanisms that may include: (1) beam selection (which may be referred to as “P1” ) , (2) beam refinement for transmitter (network node transmitter) (which may be referred to as “P2” ) , or (3) beam refinement for receiver (UE receive) (which may be referred to as “P3” ) . For P1, the network node may sweep a TRP beam, and UE sweeps UE beam and select a best one (e.g., best TRP beam measured by the best UE beam) and report it to the network node. For P2, the network node may refine beam (e.g., sweeping narrower beam over narrower range) and UE detects the best one and report it to the network node. For P3, the network node may fix a beam (transmit the same beam repeatedly) and UE refines its receiver beam. P3 may set the spatial filter on receiver antenna array and may be used to facilitate UE beamforming. Each of P1, P2, or P3 may be based on SSB or CSI-RS. The first type of BM may be further based on various uplink beam management mechanisms that may include: (1) beam selection (which may be referred to as “U1” ) , (2) beam refinement for transmitter (UE transmit) (which may be referred to as “U2” ) , or (3) beam refinement for receiver (network node receiver) (which may be referred to as “U3” ) . The first type of BM may be further based on layer 1 (L1) reference signal received power (RSRP) reporting and transmission configuration indicator (TCI) state configuration and indication. There may be a second type of BM that may be referred to as “eBM, ” eBM may be based on L1 signal to interference and noise ratio (SINR) reporting and may facilitate overhead and latency reduction based on component carrier (CC) group beam update and faster UL beam update. There may be a third type of BM that may be referred to as “FeBM. ” FeBM may further enhance latency reduction and efficiency by using unified TCI states, L1 / layer 2 (L2) mobility, dynamic TCI update, UL multi-panel selection, maximum permissible exposure (MPE) mitigation, and other BM latency reduction techniques. FeBM may facilitate single frequency network (SFN) or high speed train (HST) and may facilitate BM for multi-TRP.
[0084] Beam failures may occur. To detect beam failures, beam failure detection (BFD) may be performed based on measurements on various BFD RS. Once a beam failure is detected, at 440, beam failure recovery (BFR) may be performed. To facilitate the BFD and the BFR for a primary cell (PCell) or a primary secondary cell (PSCell) , BFD may be based on BFD RS and PDCCH block error rate (BLER) , and BFR may be based on contention free random access (CFRA) . To facilitate the BFD and the BFR for a secondary cell (SCell) , link recovery request via scheduling request (SR) and medium access control (MAC) control element (MAC-CE) based BFR may be used. If the beam failure recovery is not successful, the UE may enter radio link failure at 450.
[0085] As an example of L1 / L2 mobility, inter-cell beam management based on beam-based mobility may be facilitated by L1 and / or L2 signaling such as UE-dedicated channels / RSs which may be associated with a switch to a TRP with a different PCI according to downlink control information (DCI) or medium access control (MAC) control element (MAC-CE) based unified TCI update.
[0086] In some aspects, the network may configure a set of cells for L1 / L2 mobility. The set of cells for L1 / L2 mobility may be referred to as L1 / L2 mobility configured cell set. A subset of the L1 / L2 mobility configured cell set may be activated (e.g., with L1 or L2 control signaling) and may be referred to as an L1 / L2 mobility activated cell set (which may also be referred to as an L1 / L2 activated mobility cell set) . The subset of cells in the L1 / L2 mobility configured cell set that are not activated or that are indicated to be deactivated may be referred to as an L1 / L2 mobility deactivated cell set or a deactivated L1 / L2 mobility cell set. The L1 / L2 mobility activated cell set may be a group of cells in the L1 / L2 mobility configured cell set that are activated and may be readily used for data and control transfer. The L1 / L2 mobility deactivated cell set (which may be an L1 / L2 mobility candidate cell set) may be a group of cells in the configured set that are configured for the UE yet deactivated (e.g., not used for data / control transfer until activated) and may be activated by L1 / L2 signaling. Once activated, a deactivated cell may be used for data and control transfer between a UE and a base station. The L1 / L2 inter-cell mobility may reduce mobility latency. The configuration and maintenance of multiple candidate cells may allow for a quicker application of configurations for the candidate cells, and the activated set of cells may provide for dynamic switching among the candidate serving cells (e.g., including an SpCell and SCell) based on L1 or L2 signaling.
[0087] The procedures of L1 / L2 based inter-cell mobility are applicable to many scenarios. These scenarios may include standalone CA and NR-DC cases with serving cell changing within one CG, intra-DU cases and intra-CU inter-DU cases (applicable for standalone and CA, with no new RAN interface expected) , intra-frequency and inter-frequency cases, FR1 and FR2 cases. In these scenarios, the source and target cells may be synchronized or non-synchronized.
[0088] For mobility management of the activated cell set, L1 / L2 signaling may be used to activate / deactivate cells in the L1 / L2 mobility configured cell set and to select beams within the activated cells (of the activated cell set) . As the UE moves, cells from the L1 / L2 mobility configured cell set may be deactivated and activated by L1 / L2 signaling based on signal quality (e.g., based on measurements) , loading, or the like. Example measurements may include cell coverage measurements represented by Radio Signal Received Power (RSRP) , and quality represented by Radio Signal Received Quality (RSRQ) , or other measurements that the UE performs on signals from the base station. In some aspects, the measurements may be L1 measurements such as one or more of an RSRP, an RSRQ, a received signal strength indicator (RSSI) , or a signal to noise and interference ratio (SINR) measurement of various signals, such as an SSB, a PSS, an SSS, a broadcast channel (BCH) , a DM-RS, CSI-RS, or the like.
[0089] In some aspects, all cells in the L1 / L2 mobility configured cell set may belong to the same DU and the cells may be on the same or different carrier frequencies. Cells in the L1 / L2 mobility configured cell set may cover a mobility area.
[0090] As an example of unified TCI states, a pool of joint DL / UL TCI states may be used for joint DL / UL TCI state updates for beam indication. In some aspects, the joint TCI may or may not include UL specific parameter (s) such as UL PC / timing parameters, PLRS, panel-related indication, or the like. If the joint TCI includes the UL specific parameter (s) , the parameters may be used for the UL transmission of the DL and UL transmissions to which the joint TCI is applied.
[0091] Under a unified TCI framework, different types of common TCI states may be indicated. For example, a type 1 TCI may be a joint DL / UL common TCI state to indicate a common beam for at least one DL channel or RS and at least one UL channel or RS. A type 2 TCI may be a separate DL (e.g., separate from UL) common TCI state to indicate a common beam for more than one DL channel or RS. A type 3 TCI may be a separate UL common TCI state to indicate a common beam for more than one UL channel / RS. A type 4 TCI may be a separate DL single channel or RS TCI state to indicate a beam for a single DL channel or RS. A type 5 TCI may be a separate UL single channel or RS TCI state to indicate a beam for a single UL channel or RS. A type 6 TCI may include UL spatial relation information (e.g., such as sounding reference signal (SRS) resource indicator (SRI) ) to indicate a beam for a single UL channel or RS. An example RS may be an SSB, a tracking reference signal (TRS) and associated CSI-RS for tracking, a CSI-RS for beam management, a CSI-RS for CQI management, a DM-RS associated with non-UE-dedicated reception on PDSCH and a subset (which may be a full set) of control resource sets (CORESETs) , or the like. A TCI state may be defined to represent at least one source RS to provide a reference (e.g., UE assumption) for determining quasi-co-location (QCL) or spatial filters. For example, a TCI state may define a QCL assumption between a source RS and a target RS.
[0092] To facilitate beam management (such as beam prediction in time or spatial domain for overhead and latency reduction, beam selection accuracy improvement, or the like) artificial intelligence (AI) or machine learning (ML) models may be used. For lifecycle management of BM AI / ML model, model training, model deployment, model inference, model monitoring, and model updating may be performed.
[0093] For AI / ML model based BM, there may be spatial-domain DL beam prediction for Set A of beams based on measurement results of Set B of beams or temporal DL beam prediction for Set A of beams based on the historic measurement results of Set B of beams, where Set A and Set B may be different or Set B may be a subset of Set A.
[0094] A UE may be RRC configured (e.g., based on an RRC configuration) with a list of CSI report configuration states and associated resources that may be used for aperiodic CSI reporting (e.g., in a parameter CSI-AperiodicTriggerStateList, which may include CSI-AperiodicTriggerState #0, CSI-AperiodicTriggerState #1, …, CSI-AperiodicTriggerState #N) . Each of the CSI report configuration states (e.g., each of CSI-AperiodicTriggerState #0, CSI-AperiodicTriggerState #1, …, CSI-AperiodicTriggerState #N) may include one or more CSI report configuration information (e.g., which may be a parameter CSI-AssociatedReportConfigInfo) , which may each include a CSI report setting identifier (ID) , one or more CMR sets out of the CMRs configured to be associated with the CSI report setting, a CSI-RS or a CSI-interference measurement (CSI-IM) set for interference measurement out of the CSI-RS or CSI-IMs associated with the CSI report setting. As used herein, the term “IMR” may refer to any resource for measuring interference. As used herein, the term “CMR” may refer to any resource for measuring channel. An AP CSI report may be carried in a PUSCH, whereas a periodic (P) or semi-persistent (SP) CSI report may be carried in a PUSCH or a PUCCH. The RRC configuration may further configure time domain (TD) resource allocation for the PUSCH carrying the AP CSI report, and the CMR or the IMR may be configured by the CSI report setting and the RRC configuration associated with the CMR / IMR set (s) . A MAC-CE may activate one or more RRC configured CSI report configuration states and a DCI (e.g., such as a UL grant DCI or a DL grant DCI) may trigger (e.g., by using a CSI request field in the DCI to map to the MAC-CE activated CSI report configuration states to be triggered) , one or more of the MAC-CE activated CSI report configuration states so that the UE may transmit a CSI report based on the triggered CSI report configuration states. The CSI request field in the DCI may map to MAC-CE activated AperiodicTriggerState’s to be triggered, where the parameter NTS represents quantity of bits in the UL-grant DCI associated with the CSI request field. An example CSI-AperiodicTriggerStateList parameter is provided below:
[0095] CSI-AperiodicTriggerStateList information element
[0096] The IE ap-CSI-MultiplexingMode may indicate ap-CSI-MultiplexingMode. The IE csi-IM-ResourcesForInterference may indicate IMR and may indicate CSI-IM-ResourceSet for interference measurement. The IE csi-SSB-ResourceSet, csi-SSB-ResourceSet2 may indicate CMR and may indicate CSI-SSB-ResourceSet for channel measurements. The IE resourcesForChannel2 may indicate CMR and may indicate reference signals for channel measurement corresponding to the second resource set for L1-RSRP measurement as configured in IE CSI-ResourceConfig when nrofReportedGroups-r17 is configured in IE CSI-ReportConfig. The UE nzp-CSI-RS-ResourcesForInterference may indicate non-zero power (NZP) -CSI-RS-ResourceSet for interference measurement.
[0097] There may be timeline regulation associated with a CSI report. As used herein, the term “timeline regulation” refers to mechanisms related to a timeline where the UE may transmit CSI report based on a trigger or ignore the trigger based on the timeline. As an example timeline regulation, for the nth AP-CSI report associated with AP-CMR / IMR triggered by a DCI, the UE may provide a valid nth CSI report, if The 1st uplink symbol to carry the AP-CSI report including the effect of TA, starts no earlier than at symbol Zref, and the 1st uplink symbol to carry the nth AP-CSI report including the effect of timing advance (TA) , starts no earlier than at symbol Z′ref (n) . The symbol Zref may be a reference symbol, such as the next UL symbol with its cyclic prefix (CP) starting Tproc, CSI=Z (2048+144) κ2-μTc+Tswitch after the end of the last symbol of the PDCCH carrying the DCI. The symbol Z′ref (n) may be another reference symbol, such as the next UL symbol with its CP starting T′proc, CSI=Z′ (2048+144) κ2-μTc+Tswitch after the end of the last symbol of the latest of AP-CMR / IMR. The parameter Tc may be a time unit. The parameter μ may represent a decoding time based on a processing time and may be associated with SCS. The parameters Z and Z′ may be based on SCS, one or more quantities, such as RSRP, SINR, channel quality indicator (CQI) , precoding matrix indicator (PMI) , or the like, to be included in the CSI report (e.g., represented by IE reportQuantity) , number of CSI-RS ports for PMI feedback, whether the report is a wideband PMI or subband-specific PMIs, and UE reported capabilities for RSRP / SINR feedback. As used herein, the term “one or more quantities to be included in the CSI report” may refer to information carried by IE reportQuantity, which may include quantities to include in a CSI report, such as quantities of RSRP, SINR, CQI, PMI, or the like.
[0098] FIG. 5 is a diagram 500 illustrating example timeline regulation associated with an AP CSI report with AP-CMR or AP-IMR. As illustrated in FIG. 5, a PDCCH 502 may carry DCI that triggers one or more AP-CSI reports associated with CMR or IMR. The associated CMR or IMR may be AP-CMR 504 or AP-IMR 506. The one or more AP-CSI reports triggered may be transmitted in a PUSCH 508. A time 512 between the PDCCH 502 carrying the DCI that triggers one or more AP-CSI reports and the PUSCH 508 carrying the one or more AP-CSI reports may be greater than Zref, which may be based on the parameter Z. A time 514 between the associated CMR or IMR, such as the a later one of the AP-CMR 504 or the AP-IMR 506 and the PUSCH 508 carrying the one or more AP-CSI reports may be greater than Z′ref, which may be based on the parameter Z′.
[0099] If the first uplink symbol to carry the CSI reports triggered by the DCI starts later than Zref for feedback via PUSCH, the UE may ignore the DCI if no HARQ-ACK or transport block (TB) is multiplexed on the PUSCH. If the first uplink symbol to carry the nth CSI reports triggered by the DCI starts later than Z′ref (n) for feedback via PUSCH, the UE may ignore the DCI if #of triggered reports is one and no HARQ-ACK / TB is multiplexed on the PUSCH, otherwise, the UE might not update the nth CSI report.
[0100] Aspects provided herein may enable reducing CSI-RS overhead, such as AP-CSI-RS overhead, UE power consumption, and CSI latency via beam prediction. In some wireless communication systems, AP CSI reports are associated with CMRs / IMRs. However, there may be a large quantity of beams and different beams may be associated with different AP-CMRs such as AP-NZP-CSI-RSs, overhead may be large. In addition, for a UE to measure the AP-CMRs, RF of the UE may be active, causing power consumption. In addition, due to having both reference symbol Zref and reference symbol Z′ref, CSI latency may be noticeable. To reduce CSI-RS overhead, UE power consumption, and CSI latency, aspects provided herein may provide triggering of CSI reports, such as AP, P, or SP CSI reports, without being associated with a measured CMR or a measured IMR. To facilitate such aspects, AP CSI report triggering framework may be enhanced. For example, RRC configuration associated with CSI report such as CSI-AssociatedReportConfigInfo may be enhanced such that the UE knows whether an AP CSI report is triggered with actually transmitted CMRs / IMRs (not measured) or triggered without CMRs / IMRs configured to be (or actually) transmitted. The MAC-CE activating the CSI report configuration states (e.g., CSI-AperiodicTriggerState) may indicate whether the CSI reports may be accompanied by or without CMRs or IMRs configured to be transmitted (which may be otherwise referred to as “configured to be actually transmitted” or “actually transmitted” ) . In some aspect, the DCI triggering the CSI report (s) may indicate whether the triggered CSI reports may be accompanied with CMRs or IMRs configured to be transmitted or not. Aspects provided herein may also provide parameters Z and Z′for reference symbols Zref and Z′ref related to timeline regulation based on whether there is CMR or IMR configured to be transmitted or not associated with the CSI report. For example, the network node may request a UE to predict L1-RSRPs or other metrics as if (e.g., based on a same time occasion as a configured transmission) the AP-CMRs / IMRs were transmitted when there is no CMR or IMR configured to be transmitted, while the timeline may be different (e.g., relaxed) due to the UE not measuring CMR or IMR for the AP-CSI report. The timeline regulation may be different for P / SP CSI reports due to the P / SP-CMRs may be based on historical measurements.
[0101] FIG. 6 is a diagram 600 illustrating example communications between a network node 604 and a UE 602. As illustrated in FIG. 6, the network node 604 may transmit an RRC configuration 606 to configure a list of CSI report configuration states and associated resources that may be used for CSI reporting. After transmitting the RRC configuration 606, the network node 604 may transmit a MAC-CE 608 to activate one or more RRC configured CSI report configuration states. After transmitting the MAC-CE 608, the network node 604 may transmit a DCI 610 (e.g., such as a UL grant DCI or a DL grant DCI) to trigger (e.g., by using a CSI request field in the DCI to map to the MAC-CE activated CSI report configuration states to be triggered) , one or more of the MAC-CE activated CSI report configuration states so that the UE 602 may transmit a CSI report 618 based on the triggered CSI report configuration states. In some aspects, the CSI report 618 may be an AP CSI report. In some aspects, the CSI report 618 not associated with measured CMR or IMR. For example, the UE 602 may be not requested or configured to determine one or more report quantities in the CSI report 618 based on measuring CMR or IMR. In some aspects, CMR or IMR 612 may be transmitted and associated with the CSI report 618 despite not being measured by the UE 602. In some aspects, no CMR or IMR associated with the CSI report 618 may be transmitted.
[0102] Referring now to FIG. 7A, FIG. 7A is a diagram 700 illustrating example AP CSI report not associated with a measured AP-CMR or a measured AP-IMR, where the measured AP-CMR or the measured AP-IMR may be transmitted or not transmitted. As illustrated in FIG. 7A, a PDCCH 702 may carry DCI (e.g., that corresponds to 610) that triggers one or more AP-CSI reports (e.g., that corresponds to 618) associated with CMR or IMR (e.g., that corresponds to 612) . The associated CMR or IMR may be AP-CMR 704 or AP-IMR 706. The one or more AP-CSI reports triggered may be transmitted in a PUSCH 708. The AP-CMR 704 or AP-IMR 706 may be configured to be transmitted or configured to be not transmitted.
[0103] In some aspects, the UE may determine (e.g., identify) one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) at 614. In some aspects, at 614, the UE may also generate the CSI report. In some aspects, based on a timeline regulation associated with CSI reports that are not associated with measured CMR or IMR (which may be different from timeline regulation associated with CSI reports that are associated with measured CMR or IMR) , the UE 602 may determine whether to update and transmit the CSI report 618 or ignore the trigger and refrain from updating the CSI report at 616.
[0104] In some aspects where the CMR or IMR 612 may be transmitted and associated with the CSI report 618 despite not being measured by the UE 602, the UE 602 may determine (e.g., identify) one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) without considering the CMR or IMR 612. In some aspects, the UE 602 may rate match around the CMR or IMR 612 if the CMR or IMR 612 is configured to be transmitted. In some aspects, the UE 602 may not rate match around the CMR or IMR 612 if the CMR or IMR 612 is configured to be not transmitted.
[0105] In some aspects, the RRC configuration 606, such as the IE CSI-AssociatedReportConfigInfo, may configure the CMR or IMR 612 when the CMR or IMR 612 is configured to be not transmitted. For example, the IE CSI-AssociatedReportConfigInfo configured by the RRC configuration 606 and associated with the CSI report 618 may still include RRC configured selection of CMR / IMR sets that includes the CMR or IMR 612. In some aspects, the UE may determine (e.g., identify) one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) based on the RRC configured selection of CMR / IMR sets that includes the CMR or IMR 612. For example, the UE 602 may report L1-RSRPs / L1-SINRs associated with the AP-CMR / IMR sets selected by the CSI-AssociatedReportConfigInfo, without measuring the AP-CMR / IMR sets. In some aspects, the UE 602 may determine (e.g., identify) one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) not based on the RRC configured selection of CMR / IMR sets that includes the CMR or IMR 612. In some aspects, the UE 602 may determine, based on the RRC configuration 606, the DCI 610, or the MAC-CE 608, whether to determine (e.g., identify) one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) based on the RRC configured selection of CMR / IMR sets that includes the CMR or IMR 612.
[0106] In some aspects, the RRC configuration 606, such as the IE CSI-AssociatedReportConfigInfo in the RRC configuration 606, may further configure whether one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) may be or not be based on UE prediction instead of measurements. In some aspects, the RRC configuration 606, such as the IE CSI-AssociatedReportConfigInfo in the RRC configuration 606, may further indicate whether the CMR or IMR 612 is configured to be transmitted or configured to be not transmitted. In some aspects, UE 602 may be configured with information regarding whether the CMR or IMR 612 is configured to be transmitted or configured to be not transmitted without signaling.
[0107] In some aspects, the MAC-CE 608, which may activate CSI-AperiodicTriggerState, may further configure whether one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) may be or not be based on UE prediction instead of measurements. In some aspects, MAC-CE 608, may further indicate whether the CMR or IMR 612 is configured to be transmitted or configured to be not transmitted.
[0108] In some aspects, the DCI 610 triggering the CSI report 618, which may be triggering CSI-AperiodicTriggerState, may further configure whether one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) may be or not be based on UE prediction instead of measurements. In some aspects, the DCI 610 may further indicate whether the CMR or IMR 612 is configured to be transmitted or configured to be not transmitted. In some aspects, UE 602 may be configured with information regarding whether the CMR or IMR 612 is configured to be transmitted or configured to be not transmitted without signaling.
[0109] In some aspects where the RRC configuration 606, such as the IE CSI-AssociatedReportConfigInfo, configures the CMR or IMR 612, if the CMR or IMR is configured to be not transmitted, the UE 602 may (e.g., at 614) identify one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) with regard to the CMR or IMR 612, such as by identify the one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) based on time occasions associated with the CMR or IMR 612. In some aspects, the RRC configuration 606, such as the IE CSI-AssociatedReportConfigInfo, may configure a different time occasion (which may be referred to as “a prediction target” ) for identifying the one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) . As used herein, the term “prediction target” may refer to a time occasion associated with a CSI report that is not associated with a configured CMR / IMR.
[0110] In some aspects where the RRC configuration 606, such as the IE CSI-AssociatedReportConfigInfo, configures the CMR or IMR 612, if the CMR or IMR is configured to be transmitted, the UE 602 may (e.g., at 614) identify one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) with regard to the CMR or IMR 612, such as by identify the one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) based on time occasions associated with the CMR or IMR 612. In some aspects, the RRC configuration 606, such as the IE CSI-AssociatedReportConfigInfo, may configure a different time occasion (which may be referred to as “a prediction target” ) for identifying the one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) .
[0111] Referring now to FIG. 7B, FIG. 7B is a diagram 750 illustrating example AP CSI report not associated with a measured AP-CMR or a measured AP-IMR, where the AP CSI report may be based on time occasion of a non-transmitted AP-CMR or a non-transmitted AP-IMR as if the AP-CMR or the AP-IMR is transmitted or based on a different prediction target. As illustrated in FIG. 7B, a PDCCH 752 may carry DCI (e.g., that corresponds to 610) that triggers one or more AP-CSI reports (e.g., that corresponds to 618) associated with CMR or IMR (e.g., that corresponds to 612) . The associated CMR or IMR may be AP-CMR 754 or AP-IMR 756. The one or more AP-CSI reports triggered may be transmitted in a PUSCH 758. The AP-CMR 754 or the AP-IMR 756 may be configured to be transmitted or configured to be not transmitted. The MAC-CE 751, the DCI, or the RRC configuration may configure the CSI report to be based on a time occasion associated with the AP-CMR 754 or the AP-IMR 756, or a different time occasion associated with a prediction target 770.
[0112] In some aspects, the CSI report 618 may be AP, P, or SP CSI report. In some aspects, if the CSI report 618 is a P / SP CSI report, the CMR or IMR 612 may be transmitted and the UE 602 may identify the one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) based on predictions instead of measurements. In some aspects where the CSI report 618 is an SP CSI report, the MAC-CE 608 may indicate whether the UE 602 may identify the one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) based on measurements of the CMR or IMR 612 associated with the CSI setting. The MAC-CE 608 may also indicate whether the CMR or IMR 612 associated with the CSI setting is configured to be transmitted or not.
[0113] In some aspects, the RRC configuration 606, such as the IE CSI-AssociatedReportConfigInfo, may not configure CMR or IMR associated with the CSI report. For example, the IE CSI-AssociatedReportConfigInfo may not include RRC configured selection of CMR / IMR sets. In some of such aspects, the one or more quantities to be included in the CSI report 618 (e.g., reportQuantity) , may be configured by the RRC configuration 606 based on a different prediction target (e.g., associated with different resource sets, such as resource sets associated with a different beam) . The MAC-CE 608 may activate and the DCI 610 may trigger different resources associated with the prediction target. In some aspects, the RRC configuration 606, the MAC-CE 608, or the DCI 610 may indicate time occasions associated with the prediction target. For example, the CSI report setting or the prediction resource set may indicate TD occasion for the UE 602 to assume that such prediction resource sets are supposed to be appeared there, for identifying the reportQuantity. Alternatively, the CSI-AssociatedReportConfigInfo may indicate time occasion for the UE to assume that such prediction resource sets are supposed to be appeared there, for identifying the reportQuantity. In some aspects, CSI-AssociatedReportConfigInfo may indicate multiple time occasion that may be selected by the MAC-CE 608 or the DCI 610.
[0114] In some aspects, timeline regulation associated with a CSI report not associated with a measured CMR or a measured IMR may be based on Z or Zref values separately defined for the CSI report not associated with a measured CMR or a measured IMR (e.g., separate from Z or Zref values for CSI report associated with a measured CMR or a measured IMR) . In some aspects, the Z or Zref values separately defined for the CSI report not associated with a measured CMR or a measured IMR may be based on one or more of: (1) the target time occasion associated with the prediction (e.g., if the target TD occasion is regarding a long time in the future, greater value of Z may be defined to allow the UE to have a longer time to identify the prediction results) , (2) network indicated beam characteristics of the prediction targets (e.g., the CMR or IMR 612 or a different prediction target) , which may include explicitly indicated beam widths, beamforming gains, pointing directions, or their relative values referring to other SSBs / CSI-RSs or implicitly indicated beam neighboring information, (3) total of the prediction target resources (e.g., total number of resources of the CMR or IMR 612 or a different prediction target) , (4) whether the CMR or IMR 612 is configured to be transmitted, (5) reportQuantity details associated with the Prediction target resources such as L1-RSRP, L1-SINR, Top-K-Resources in terms of L1-RSRP / L1-SINR (and the value of K) , (6) UE reported capabilities regarding the parameter Z (capability regarding processing time) , or other parameters.
[0115] FIG. 8 is a diagram 800 illustrating example processing time associated with an AP CSI report with AP-CMR or AP-IMR. As illustrated in FIG. 8, a PDCCH 802 may carry DCI that triggers one or more AP-CSI reports associated with CMR or IMR. The associated CMR or IMR may be AP-CMR 804 or AP-IMR 806. The one or more AP-CSI reports triggered may be transmitted in a PUSCH 808. During a time 820 between the PDCCH 802 and the AP-CMR 804, there may be UL symbols that may be accounted due to time division duplex (TDD) . During a time 830 between the AP-IMR 806 and the PUSCH 808, there may be DL slots that may be accounted due to TDD. A time 812 between the PDCCH 802 carrying the DCI that triggers one or more AP-CSI reports and the PUSCH 808 carrying the one or more AP-CSI reports may be greater than Zref, which may be based on the parameter Z. A time 814 between the associated CMR or IMR, such as the a later one of the AP-CMR 804 or the AP-IMR 806 and the PUSCH 808 carrying the one or more AP-CSI reports may be greater than Z′ref, which may be based on the parameter Z′.
[0116] FIG. 9 is a diagram 900 illustrating example processing time associated with an AP CSI report not associated with a measured AP-CMR or a measured AP-IMR. As illustrated in FIG. 9, a PDCCH 902 may carry DCI that triggers one or more AP-CSI reports that may be transmitted in a PUSCH 908. The time 912 between the PDCCH 902 and the PUSCH 908 may be shorter than AP-CSI reports associated with a measured AP-CMR or a measured AP-IMR due to no measurement being performed may result in lower complexity and no regulation regarding Z′ref due to no back and forth switching between different RF functions at the UE.
[0117] In some aspects, the DCI 610 may be UL grant DCI that schedules the PUSCH for transmitting the CSI report 618 or a DL grant DCI that schedules a separate PDSCH 620. By enabling utilizing a DL grant DCI to trigger the CSI report 618, the latency may be reduced due to not waiting for a UL grant DCI to trigger a CSI report. Referring now to FIG. 10A, FIG. 10A is a diagram 1000 illustrating example DL grant DCI for triggering a CSI report.
[0118] As illustrated in FIG. 10A, if a UL grant DCI 1002 schedules a PUSCH 1004 without the network realizing to schedule a CSI report, the network may use a subsequent DL grant DCI 1006 to trigger a CSI report in the PUSCH 1004 without waiting for another UL grant DCI, reducing latency. In some of such aspects, the time regulations may be different for DL grant DCI triggering CSI report or UL grant DCI triggering CSI report. For example, for DL grant DCI triggering CSI report, a timeline regulation for configured grant (CG) PUSCH or dynamic PUSCH may be used.
[0119] FIG. 10B is a diagram 1050 illustrating example AP CSI report associated with a measured AP-CMR or a measured AP-IMR, where the AP CSI report may be based on a prediction target different from the measured AP-CMR or the measured AP-CMR. Referring now to FIG. 10B, FIG. 10B is a diagram 1050 illustrating example AP CSI report associated with a measured AP-CMR or a measured AP-IMR, where the AP CSI report may be based on a different prediction target. As illustrated in FIG. 10B, a PDCCH 1052 may carry DCI that triggers one or more AP-CSI reports associated with CMR or IMR after activation based on MAC-CE 1051. The associated CMR or IMR may be AP-CMR 1054 or AP-IMR 1056. The one or more AP-CSI reports triggered may be transmitted in a PUSCH 1058. The AP-CMR 1054 or the AP-IMR 1056 may be configured to be transmitted and measured. The MAC-CE, the DCI, or the RRC configuration may configure the CSI report to be based on a different time occasion associated with a prediction target 1070 instead of the measured CMR / IMR. In some aspects, time regulations for such aspects may be based on different values of the parameter Z, Zref, or Z′ref separately defined for CSI reports associated with measured CMR / IMR but not based on the CMR / IMR. As an example, the prediction target may be based on a set of beams that may be different from a set of beams associated with the measured CMR / IMR.
[0120] FIG. 11 is a flowchart 1100 of a method of wireless communication. The method may be performed by a UE (e.g., the UE 104; the apparatus 1604) .
[0121] At 1102, the UE may receive, from a network node, DCI triggering an AP CSI report that is not associated with a measured CMR or a measured IMR. For example, the UE 602 may receive, from a network node 604, DCI (e.g., 610) triggering an AP CSI report (e.g., 618) that is not associated with a measured CMR or a measured IMR (e.g., 612) . In some aspects, 1102 may be performed by CSI component 198.
[0122] At 1104, the UE may transmit the AP CSI report based on a timeline regulation associated with the AP CSI report. For example, the UE 602 may transmit the AP CSI report (e.g., 618) based on a timeline regulation associated with the AP CSI report. In some aspects, 1104 may be performed by CSI component 198.
[0123] FIG. 12 is a flowchart 1200 of a method of wireless communication. The method may be performed by a UE (e.g., the UE 104; the apparatus 1604) .
[0124] At 1202, the UE may receive, from a network node, DCI triggering an AP CSI report that is not associated with a measured CMR or a measured IMR. For example, the UE 602 may receive, from a network node 604, DCI (e.g., 610) triggering an AP CSI report (e.g., 618) that is not associated with a measured CMR or a measured IMR (e.g., 612) . In some aspects, 1202 may be performed by CSI component 198. In some aspects, the DCI is a downlink grant DCI, and where the timeline regulation is associated with the downlink grant DCI. In some aspects, the DCI is an uplink grant DCI, and where the timeline regulation is associated with the uplink grant DCI. In some aspects, the AP CSI report is not associated with the measured CMR or the measured IMR based on the UE not being requested to or configured to determine one or more quantities to be included in the AP CSI report based on measurement of the measured CMR or the measured IMR.
[0125] At 1204, the UE may transmit the AP CSI report based on a timeline regulation associated with the AP CSI report. For example, the UE 602 may transmit the AP CSI report (e.g., 618) based on a timeline regulation associated with the AP CSI report. In some aspects, 1204 may be performed by CSI component 198.
[0126] In some aspects, the AP CSI report is associated with an RRC configuration (e.g., 606) configuring an unmeasured CMR or an unmeasured IMR (e.g., 612) . In some aspects, the AP CSI report includes one or more reported metrics associated with the unmeasured CMR or the unmeasured IMR. In some aspects, the RRC configuration indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement. In some aspects, the RRC configuration indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission. In some aspects, the unmeasured CMR or the unmeasured IMR is aperiodic. In some aspects, the unmeasured CMR or the unmeasured IMR is periodic or semi-persistent, and where the unmeasured CMR or the unmeasured IMR is configured to be transmitted.
[0127] In some aspects, at 1201, the UE may receive, from the network node before the reception of the DCI triggering the AP CSI report, a medium access control (MAC) control element (MAC-CE) activating an aperiodic trigger associated with the AP CSI report, where the MAC-CE indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement. For example, the UE 602 may receive, from the network node before the reception of the DCI triggering the AP CSI report, a MAC-CE (e.g., 608) activating an aperiodic trigger associated with the AP CSI report, where the MAC-CE indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement. In some aspects, 1201 may be performed by CSI component 198. In some aspects, the MAC-CE indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.
[0128] In some aspects, a MAC-CE indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement. In some aspects, the MAC-CE indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.
[0129] At 1210, the UE may identify one or more quantities to be included in the AP CSI report. For example, the UE 602 may identify (e.g., at 614) one or more quantities to be included in the AP CSI report. In some aspects, 1210 may be performed by CSI component 198. In some aspects, the unmeasured CMR or the unmeasured IMR is configured to be not transmitted, and the UE may identify one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the time occasion is configured for a transmission of the unmeasured CMR or the unmeasured IMR. In some aspects, the unmeasured CMR or the unmeasured IMR is configured to be not transmitted, and the UE may identify one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the RRC configuration indicates the time occasion. In some aspects, the unmeasured CMR or the unmeasured IMR is configured to be transmitted, and the UE may identify one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the time occasion is configured for a transmission of the unmeasured CMR or the unmeasured IMR. In some aspects, the unmeasured CMR or the unmeasured IMR is configured to be transmitted, and the UE may identify one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the RRC configuration indicates the time occasion.
[0130] In some aspects, the UE may receive, from the network node, a MAC-CE activating a semi-persistent (SP) CSI report, where the MAC-CE indicates whether one or more quantities to be included in the SP CSI report are based on the RRC configuration. In some aspects, the MAC-CE indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.
[0131] In some aspects, the AP CSI report is associated with an RRC configuration (e.g., 606) not configuring an AP CMR or an AP IMR, where one or more quantities to be included in the AP CSI report are based on one or more predictions based on one or more prediction resources. In some aspects, the RRC configuration or another configuration indicates a time occasion associated with the one or more prediction resources.
[0132] In some aspects, the timeline regulation is based on reference symbol value (e.g., Zref) . In some aspects, the reference symbol value is based on at least one of a time occasion associated with a prediction associated with the AP CSI report, at least one beam characteristic associated with a target associated with the prediction, a total quantity of prediction resources associated with the prediction, whether the prediction is associated with a previously-measured CMR or a previously-measured IMR, or a capability associated with the UE.
[0133] At 1212, the UE may update the AP CSI report or refrain from updating (e.g., at 616) the AP CSI report based on the timeline regulation associated with the AP CSI report, where the transmission of the AP CSI report is based on the update or the refrainment. For example, the UE 602 may update the AP CSI report or refrain from updating the AP CSI report based on the timeline regulation associated with the AP CSI report, where the transmission of the AP CSI report is based on the update or the refrainment. In some aspects, 1212 may be performed by CSI component 198.
[0134] In some aspects, the AP CSI report is associated with a transmitted CMR or a transmitted IMR. In some of such aspects, at 1214, the UE may rate match around the transmitted CMR or the transmitted IMR. For example, the UE 602 may rate match around the transmitted CMR or the transmitted IMR (e.g., 612) . In some aspects, 1214 may be performed by CSI component 198.
[0135] FIG. 13 is a flowchart 1300 of a method of wireless communication. The method may be performed by a UE (e.g., the UE 104; the apparatus 1604) .
[0136] At 1302, the UE may receive, from a network node, DCI triggering an AP CSI report associated with a measured CMR or a measured IMR, where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. For example, the UE 602 may receive, from a network node 604, DCI (e.g., in 1052) triggering an AP CSI report (e.g., in 1058) associated with a measured CMR (e.g., 1054) or a measured IMR (e.g., 1056) , where one or more quantities to be included in the AP CSI report are based on one or more prediction targets (e.g., 1070) separate from the measured CMR or the measured IMR. In some aspects, 1302 may be performed by CSI component 198.
[0137] At 1304, the UE may transmit the AP CSI report based on a timeline regulation associated with the AP CSI report. For example, the UE 602 may transmit the AP CSI report (e.g., 618) based on a timeline regulation associated with the AP CSI report. In some aspects, 1304 may be performed by CSI component 198.
[0138] FIG. 14 is a flowchart 1400 of a method of wireless communication. The method may be performed by a network node (e.g., the base station 102, the network entity 1602, the network entity 1702) .
[0139] At 1402, the network entity may transmit, for a UE, DCI triggering an AP CSI report that is not associated with a measured CMR or a measured IMR. For example, the network node 604 may transmit, for a UE 602, DCI (e.g., 610) triggering an AP CSI report (e.g., 618) that is not associated with a measured CMR or a measured IMR (e.g., 612) . In some aspects, 1402 may be performed by CSI component 199.
[0140] At 1404, the network entity may obtain the AP CSI report. For example, the network node 604 may obtain the AP CSI report (e.g., 618) . In some aspects, 1404 may be performed by CSI component 199.
[0141] FIG. 15 is a flowchart 1500 of a method of wireless communication. The method may be performed by a network node (e.g., the base station 102, the network entity 1602, the network entity 1702) .
[0142] At 1502, the network entity may transmit, for a UE, DCI triggering an AP CSI report associated with a measured CMR or a measured IMR, where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. For example, the network node 604 may transmit, for a UE 602, DCI (e.g., in 1052) triggering an AP CSI report (e.g., in 1058) associated with a measured CMR (e.g., 1054) or a measured IMR (e.g., 1056) , where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. In some aspects, 1502 may be performed by CSI component 199.
[0143] At 1504, the network entity may obtain the AP CSI report. For example, the network node 604 may obtain the AP CSI report (e.g., 618) . In some aspects, 1504 may be performed by CSI component 199.
[0144] FIG. 16 is a diagram 1600 illustrating an example of a hardware implementation for an apparatus 1604. The apparatus 1604 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus1604 may include at least one cellular baseband processor 1624 (also referred to as a modem) coupled to one or more transceivers 1622 (e.g., cellular RF transceiver) . The cellular baseband processor (s) 1624 may include at least one on-chip memory 1624'. In some aspects, the apparatus 1604 may further include one or more subscriber identity modules (SIM) cards 1620 and at least one application processor 1606 coupled to a secure digital (SD) card 1608 and a screen 1610. The application processor (s) 1606 may include on-chip memory 1606'. In some aspects, the apparatus 1604 may further include a Bluetooth module 1612, a WLAN module 1614, an SPS module 1616 (e.g., GNSS module) , one or more sensor modules 1618 (e.g., barometric pressure sensor / altimeter; motion sensor such as inertial measurement unit (IMU) , gyroscope, and / or accelerometer (s) ; light detection and ranging (LIDAR) , radio assisted detection and ranging (RADAR) , sound navigation and ranging (SONAR) , magnetometer, audio and / or other technologies used for positioning) , additional memory modules 1626, a power supply 1630, and / or a camera 1632. The Bluetooth module 1612, the WLAN module 1614, and the SPS module 1616 may include an on-chip transceiver (TRX) (or in some cases, just a receiver (RX) ) . The Bluetooth module 1612, the WLAN module 1614, and the SPS module 1616 may include their own dedicated antennas and / or utilize the antennas 1680 for communication. The cellular baseband processor (s) 1624 communicates through the transceiver (s) 1622 via one or more antennas 1680 with the UE 104 and / or with an RU associated with a network entity 1602. The cellular baseband processor (s) 1624 and the application processor (s) 1606 may each include a computer-readable medium / memory 1624', 1606', respectively. The additional memory modules 1626 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 1624', 1606', 1626 may be non-transitory. The cellular baseband processor (s) 1624 and the application processor (s) 1606 are each responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor (s) 1624 / application processor (s) 1606, causes the cellular baseband processor (s) 1624 / application processor (s) 1606 to perform the various functions described supra. The computer-readable medium / memory may also be used for storing data that is manipulated by the cellular baseband processor (s) 1624 / application processor (s) 1606 when executing software. The cellular baseband processor (s) 1624 / application processor (s) 1606 may be a component of the UE 350 and may include the at least one memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the apparatus 1604 may be at least one processor chip (modem and / or application) and include just the cellular baseband processor (s) 1624 and / or the application processor (s) 1606, and in another configuration, the apparatus 1604 may be the entire UE (e.g., see UE 350 of FIG. 3) and include the additional modules of the apparatus 1604.
[0145] As discussed supra, the CSI component 198 may be configured to receive, from a network node, downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report that is not associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) . In some aspects, the CSI component 198 may be further configured to receive, from a network node, DCI triggering an AP CSI report associated with a measured CMR or a measured IMR, where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. In some aspects, the CSI component 198 may be further configured to transmit the AP CSI report based on a timeline regulation associated with the AP CSI report. The CSI component 198 may be within the cellular baseband processor (s) 1624, the application processor (s) 1606, or both the cellular baseband processor (s) 1624 and the application processor (s) 1606. The component 198 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. As shown, the apparatus 1604 may include a variety of components configured for various functions. In one configuration, the apparatus 1604, and in particular the cellular baseband processor (s) 1624 and / or the application processor (s) 1606, may include means for receiving, from a network node, DCI triggering an AP CSI report that is not associated with a measured CMR or a measured IMR. In some aspects, the apparatus 1604 may include means for receiving, from a network node, DCI triggering an AP CSI report associated with a measured CMR or a measured IMR, where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. In some aspects, the apparatus 1604 may include means for transmitting the AP CSI report based on a timeline regulation associated with the AP CSI report. In some aspects, the apparatus 1604 may include means for rate matching around the transmitted CMR or the transmitted IMR. In some aspects, the apparatus 1604 may include means for receiving, from the network node before the reception of the DCI triggering the AP CSI report, a medium access control (MAC) control element (MAC-CE) activating an aperiodic trigger associated with the AP CSI report, where the MAC-CE indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement. In some aspects, the apparatus 1604 may include means for identifying one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the time occasion is configured for a transmission of the unmeasured CMR or the unmeasured IMR. In some aspects, the apparatus 1604 may include means for identifying one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the RRC configuration indicates the time occasion. In some aspects, the apparatus 1604 may include means for identifying one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the time occasion is configured for a transmission of the unmeasured CMR or the unmeasured IMR. In some aspects, the apparatus 1604 may include means for identifying one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the RRC configuration indicates the time occasion. In some aspects, the apparatus 1604 may include means for receiving, from the network node, a medium access control (MAC) control element (MAC-CE) activating a semi-persistent (SP) CSI report, where the MAC-CE indicates whether one or more quantities to be included in the SP CSI report are based on the RRC configuration. In some aspects, the apparatus 1604 may include means for updating the AP CSI report or refraining from updating the AP CSI report based on the timeline regulation associated with the AP CSI report, where the transmission of the AP CSI report is based on the update or the refrainment. The means may be the component 198 of the apparatus 1604 configured to perform the functions recited by the means. As described supra, the apparatus 1604 may include the TX processor 368, the RX processor 356, and the controller / processor 359. As such, in one configuration, the means may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the means.
[0146] FIG. 17 is a diagram 1700 illustrating an example of a hardware implementation for a network entity 1702. The network entity 1702 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1702 may include at least one of a CU 1710, a DU 1730, or an RU 1740. For example, depending on the layer functionality handled by the component 199, the network entity 1702 may include the CU 1710; both the CU 1710 and the DU 1730; each of the CU 1710, the DU 1730, and the RU 1740; the DU 1730; both the DU 1730 and the RU 1740; or the RU 1740. The CU 1710 may include at least one CU processor 1712. The CU processor (s) 1712 may include on-chip memory 1712'. In some aspects, the CU 1710 may further include additional memory modules 1714 and a communications interface 1718. The CU 1710 communicates with the DU 1730 through a midhaul link, such as an F1 interface. The DU 1730 may include at least one DU processor 1732. The DU processor (s) 1732 may include on-chip memory 1732'. In some aspects, the DU 1730 may further include additional memory modules 1734 and a communications interface 1738. The DU 1730 communicates with the RU 1740 through a fronthaul link. The RU 1740 may include at least one RU processor 1742. The RU processor (s) 1742 may include on-chip memory 1742'. In some aspects, the RU 1740 may further include additional memory modules 1744, one or more transceivers 1746, antennas 1780, and a communications interface 1748. The RU 1740 communicates with the UE 104. The on-chip memory 1712', 1732', 1742' and the additional memory modules 1714, 1734, 1744 may each be considered a computer-readable medium / memory. Each computer-readable medium / memory may be non-transitory. Each of the processors 1712, 1732, 1742 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the corresponding processor (s) causes the processor (s) to perform the various functions described supra. The computer-readable medium / memory may also be used for storing data that is manipulated by the processor (s) when executing software.
[0147] As discussed supra, the CSI component 199 may be configured to transmit, for a UE, DCI triggering an AP CSI report that is not associated with a measured CMR or a measured IMR. In some aspects, the CSI component 199 may be further configured to transmit, for a UE, DCI triggering an AP CSI report associated with a measured CMR or a measured IMR, where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. In some aspects, the CSI component 199 may be further configured to obtain the AP CSI report. The CSI component 199 may be within one or more processors of one or more of the CU 1710, DU 1730, and the RU 1740. The component 199 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. The network entity 1702 may include a variety of components configured for various functions. In one configuration, the network entity 1702 may include means for transmitting, for a UE, DCI triggering an AP CSI report that is not associated with a measured CMR or a measured IMR. In some aspects, the network entity 1702 may include means for transmitting, for a UE, DCI triggering an AP CSI report associated with a measured CMR or a measured IMR, where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR. In some aspects, the network entity 1702 may include means for obtaining the AP CSI report. The means may be the component 199 of the network entity 1702 configured to perform the functions recited by the means. As described supra, the network entity 1702 may include the TX processor 316, the RX processor 370, and the controller / processor 375. As such, in one configuration, the means may be the TX processor 316, the RX processor 370, and / or the controller / processor 375 configured to perform the functions recited by the means.
[0148] It is understood that the specific order or hierarchy of blocks in the processes / flowcharts disclosed is an illustration of example approaches. Based upon design preferences, it is understood that the specific order or hierarchy of blocks in the processes / flowcharts may be rearranged. Further, some blocks may be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order, and are not limited to the specific order or hierarchy presented.
[0149] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not limited to the aspects described herein, but are to be accorded the full scope consistent with the language claims. Reference to an element in the singular does not mean “one and only one” unless specifically so stated, but rather “one or more. ” Terms such as “if, ” “when, ” and “while” do not imply an immediate temporal relationship or reaction. That is, these phrases, e.g., “when, ” do not imply an immediate action in response to or during the occurrence of an action, but simply imply that if a condition is met then an action will occur, but without requiring a specific or immediate time constraint for the action to occur. The word “exemplary” is used herein to mean “serving as an example, instance, or illustration. ” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, the term “some” refers to one or more. Combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” include any combination of A, B, and / or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C. Sets should be interpreted as a set of elements where the elements number one or more. Accordingly, for a set of X, X would include one or more elements. When at least one processor is configured to perform a set of functions, the at least one processor, individually or in any combination, is configured to perform the set of functions. Accordingly, each processor of the at least one processor may be configured to perform a particular subset of the set of functions, where the subset is the full set, a proper subset of the set, or an empty subset of the set. If a first apparatus receives data from or transmits data to a second apparatus, the data may be received / transmitted directly between the first and second apparatuses, or indirectly between the first and second apparatuses through a set of apparatuses. A device configured to “output” data, such as a transmission, signal, or message, may transmit the data, for example with a transceiver, or may send the data to a device that transmits the data. A device configured to “obtain” data, such as a transmission, signal, or message, may receive, for example with a transceiver, or may obtain the data from a device that receives the data. Information stored in a memory includes instructions and / or data. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are encompassed by the claims. Moreover, nothing disclosed herein is dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. The words “module, ” “mechanism, ” “element, ” “device, ” and the like may not be a substitute for the word “means. ” As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase “means for. ”
[0150] As used herein, the phrase “based on” shall not be construed as a reference to a closed set of information, one or more conditions, one or more factors, or the like. In other words, the phrase “based on A” (where “A” may be information, a condition, a factor, or the like) shall be construed as “based at least on A” unless specifically recited differently.
[0151] The following aspects are illustrative only and may be combined with other aspects or teachings described herein, without limitation.
[0152] Aspect 1 is a method for wireless communication at a user equipment (UE) , including: receiving, from a network node, downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report that is not associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) ; and transmitting the AP CSI report based on a timeline regulation associated with the AP CSI report.
[0153] Aspect 2 is the method of aspect 1, where the AP CSI report is not associated with a transmitted CMR or a transmitted IMR.
[0154] Aspect 3 is the method of aspect 1, where the AP CSI report is associated with a transmitted CMR or a transmitted IMR, and further including: rate matching around the transmitted CMR or the transmitted IMR.
[0155] Aspect 4 is the method of any of aspects 1-3, where the AP CSI report is associated with a radio resource control (RRC) configuration configuring an unmeasured CMR or an unmeasured IMR.
[0156] Aspect 5 is the method of aspect 4, where the AP CSI report includes one or more reported metrics associated with the unmeasured CMR or the unmeasured IMR.
[0157] Aspect 6 is the method of any of aspects 4-5, where the RRC configuration indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement.
[0158] Aspect 7 is the method of any of aspects 4-6, where the RRC configuration indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.
[0159] Aspect 8 is the method of any of aspects 4-7, further including: receiving, from the network node before the reception of the DCI triggering the AP CSI report, a medium access control (MAC) control element (MAC-CE) activating an aperiodic trigger associated with the AP CSI report, where the MAC-CE indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement.
[0160] Aspect 9 is the method of aspect 8, where the MAC-CE indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.
[0161] Aspect 10 is the method of any of aspects 4-9, where a medium access control (MAC) control element (MAC-CE) indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement.
[0162] Aspect 11 is the method of aspect 10, where the MAC-CE indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.
[0163] Aspect 12 is the method of any of aspects 4-11, where the unmeasured CMR or the unmeasured IMR is configured to be not transmitted, and further including: identifying one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the time occasion is configured for a transmission of the unmeasured CMR or the unmeasured IMR.
[0164] Aspect 13 is the method of any of aspects 4-11, where the unmeasured CMR or the unmeasured IMR is configured to be not transmitted, and further including: identifying one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the RRC configuration indicates the time occasion.
[0165] Aspect 14 is the method of any of aspects 4-11, where the unmeasured CMR or the unmeasured IMR is configured to be transmitted, and further including: identifying one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the time occasion is configured for a transmission of the unmeasured CMR or the unmeasured IMR.
[0166] Aspect 15 is the method of any of aspects 4-11, where the unmeasured CMR or the unmeasured IMR is configured to be transmitted, and further including: identifying one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, where the RRC configuration indicates the time occasion.
[0167] Aspect 16 is the method of any of aspects 4-15, where the unmeasured CMR or the unmeasured IMR is aperiodic.
[0168] Aspect 17 is the method of any of aspects 4-16, where the unmeasured CMR or the unmeasured IMR is periodic or semi-persistent, and where the unmeasured CMR or the unmeasured IMR is configured to be transmitted.
[0169] Aspect 18 is the method of any of aspects 4-17, further including: receiving, from the network node, a medium access control (MAC) control element (MAC-CE) activating a semi-persistent (SP) CSI report, where the MAC-CE indicates whether one or more quantities to be included in the SP CSI report are based on the RRC configuration.
[0170] Aspect 19 is the method of aspect 18, where the MAC-CE indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.
[0171] Aspect 20 is the method of any of aspects 1-19, where the AP CSI report is associated with a radio resource control (RRC) configuration not configuring an AP CMR or an AP IMR, where one or more quantities to be included in the AP CSI report are based on one or more predictions based on one or more prediction resources.
[0172] Aspect 21 is the method of aspect 20, where the RRC configuration or another configuration indicates a time occasion associated with the one or more prediction resources.
[0173] Aspect 22 is the method of any of aspects 1-21, where the timeline regulation is based on reference symbol value.
[0174] Aspect 23 is the method of aspect 22, where the reference symbol value is based on at least one of: a time occasion associated with a prediction associated with the AP CSI report, at least one beam characteristic associated with a target associated with the prediction, a total quantity of prediction resources associated with the prediction, whether the prediction is associated with a previously-measured CMR or a previously-measured IMR, or a capability associated with the UE.
[0175] Aspect 24 is the method of any of aspects 1-23, where the DCI is a downlink grant DCI, and where the timeline regulation is associated with the downlink grant DCI.
[0176] Aspect 25 is the method of any of aspects 1-23, where the DCI is a uplink grant DCI, and where the timeline regulation is associated with the uplink grant DCI.
[0177] Aspect 26 is the method of any of aspects 1-25, further including: updating the AP CSI report or refrain from updating the AP CSI report based on the timeline regulation associated with the AP CSI report, where the transmission of the AP CSI report is based on the update or the refrainment.
[0178] Aspect 27 is the method of any of aspects 1-26, where the AP CSI report is not associated with the measured CMR or the measured IMR based on the UE not being requested to or configured to determine one or more quantities to be included in the AP CSI report based on measurement of the measured CMR or the measured IMR.
[0179] Aspect 28 is a method for wireless communication at a user equipment (UE) , including: receiving, from a network node, downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) , where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR; and transmitting the AP CSI report based on a timeline regulation associated with the AP CSI report.
[0180] Aspect 29 is a method for wireless communication at a network node, including: transmitting, for a user equipment (UE) , downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report that is not associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) ; and obtaining the AP CSI report.
[0181] Aspect 30 is a method for wireless communication at a network node, including: transmitting, for a user equipment (UE) , downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) , where one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR; and obtaining the AP CSI report.
[0182] Aspect 31 is an apparatus for wireless communication at a device including at least one memory and at least one processor coupled to the at least one memory and, the at least one processor, individually or in any combination, based at least in part on information stored in the at least one memory, the at least one processor is configured to implement any of aspects 1 to 28.
[0183] Aspect 32 is the apparatus of aspect 31, further including one or more transceivers or one or more antennas coupled to the at least one processor.
[0184] Aspect 33 is an apparatus for wireless communication at a device including means for implementing any of aspects 1 to 28.
[0185] Aspect 34 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer executable code, where the code when executed by at least one processor causes the at least one processor to implement any of aspects 1 to 28.
[0186] Aspect 35 is an apparatus for wireless communication at a device including at least one memory and at least one processor coupled to the at least one memory and, the at least one processor, individually or in any combination, based at least in part on information stored in the at least one memory, the at least one processor is configured to implement any of aspects 29 to 30.
[0187] Aspect 36 is the apparatus of aspect 35, further including one or more transceivers or one or more antennas coupled to the at least one processor.
[0188] Aspect 37 is an apparatus for wireless communication at a device including means for implementing any of aspects 29 to 30.
[0189] Aspect 38 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer executable code, where the code when executed by at least one processor causes the at least one processor to implement any of aspects 29 to 30.
Claims
1.An apparatus for wireless communication at a user equipment (UE) , comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:receive, from a network node, downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report that is not associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) ; andtransmit the AP CSI report based on a timeline regulation associated with the AP CSI report.2.The apparatus of claim 1, wherein the AP CSI report is not associated with a transmitted CMR or a transmitted IMR.3.The apparatus of claim 1, wherein the AP CSI report is associated with a transmitted CMR or a transmitted IMR, and wherein the at least one processor, individually or in any combination, is further configured to:rate match around the transmitted CMR or the transmitted IMR.4.The apparatus of claim 1, wherein the AP CSI report is associated with a radio resource control (RRC) configuration configuring an unmeasured CMR or an unmeasured IMR.5.The apparatus of claim 4, wherein the AP CSI report comprises one or more reported metrics associated with the unmeasured CMR or the unmeasured IMR.6.The apparatus of claim 4, wherein the RRC configuration indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement.7.The apparatus of claim 4, wherein the RRC configuration indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.8.The apparatus of claim 4, wherein the at least one processor, individually or in any combination, is further configured to:receive, from the network node before the reception of the DCI triggering the AP CSI report, a medium access control (MAC) control element (MAC-CE) activating an aperiodic trigger associated with the AP CSI report, wherein the MAC-CE indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement.9.The apparatus of claim 8, wherein the MAC-CE indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.10.The apparatus of claim 4, wherein a medium access control (MAC) control element (MAC-CE) indicates whether one or more quantities to be included in the AP CSI report are based on a prediction or a measurement.11.The apparatus of claim 10, wherein the MAC-CE indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.12.The apparatus of claim 4, wherein the unmeasured CMR or the unmeasured IMR is configured to be not transmitted, and wherein the at least one processor, individually or in any combination, is further configured to:identify one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, wherein the time occasion is configured for a transmission of the unmeasured CMR or the unmeasured IMR.13.The apparatus of claim 4, wherein the unmeasured CMR or the unmeasured IMR is configured to be not transmitted, and wherein the at least one processor, individually or in any combination, is further configured to:identify one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, wherein the RRC configuration indicates the time occasion.14.The apparatus of claim 4, wherein the unmeasured CMR or the unmeasured IMR is configured to be transmitted, and wherein the at least one processor, individually or in any combination, is further configured to:identify one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, wherein the time occasion is configured for a transmission of the unmeasured CMR or the unmeasured IMR.15.The apparatus of claim 4, wherein the unmeasured CMR or the unmeasured IMR is configured to be transmitted, and wherein the at least one processor, individually or in any combination, is further configured to:identify one or more quantities to be included in the AP CSI report based on a time occasion associated with the unmeasured CMR or the unmeasured IMR, wherein the RRC configuration indicates the time occasion.16.The apparatus of claim 4, wherein the unmeasured CMR or the unmeasured IMR is aperiodic.17.The apparatus of claim 4, wherein the unmeasured CMR or the unmeasured IMR is periodic or semi-persistent, and wherein the unmeasured CMR or the unmeasured IMR is configured to be transmitted.18.The apparatus of claim 4, wherein the at least one processor, individually or in any combination, is further configured to:receive, from the network node, a medium access control (MAC) control element (MAC-CE) activating a semi-persistent (SP) CSI report, wherein the MAC-CE indicates whether one or more quantities to be included in the SP CSI report are based on the RRC configuration.19.The apparatus of claim 18, wherein the MAC-CE indicates whether the unmeasured CMR or the unmeasured IMR is configured for transmission.20.The apparatus of claim 1, wherein the AP CSI report is associated with a radio resource control (RRC) configuration not configuring an AP CMR or an AP IMR, wherein one or more quantities to be included in the AP CSI report are based on one or more predictions based on one or more prediction resources.21.The apparatus of claim 20, wherein the RRC configuration or another configuration indicates a time occasion associated with the one or more prediction resources.22.The apparatus of claim 1, wherein the timeline regulation is based on reference symbol value.23.The apparatus of claim 22, wherein the reference symbol value is based on at least one of:a time occasion associated with a prediction associated with the AP CSI report,at least one beam characteristic associated with a target associated with the prediction,a total quantity of prediction resources associated with the prediction,whether the prediction is associated with a previously-measured CMR or a previously-measured IMR, ora capability associated with the UE.24.The apparatus of claim 1, wherein the DCI is a downlink grant DCI, and wherein the timeline regulation is associated with the downlink grant DCI.25.The apparatus of claim 1, wherein the DCI is a uplink grant DCI, and wherein the timeline regulation is associated with the uplink grant DCI.26.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is further configured to:update the AP CSI report or refrain from updating the AP CSI report based on the timeline regulation associated with the AP CSI report, wherein the transmission of the AP CSI report is based on the update or the refrainment.27.The apparatus of claim 1, wherein the AP CSI report is not associated with the measured CMR or the measured IMR based on the UE not being requested to or configured to determine one or more quantities to be included in the AP CSI report based on measurement of the measured CMR or the measured IMR.28.An apparatus for wireless communication at a user equipment (UE) , comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:receive, from a network node, downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) , wherein one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR; andtransmit the AP CSI report based on a timeline regulation associated with the AP CSI report.29.An apparatus for wireless communication at a network node, comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:transmit, for a user equipment (UE) , downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report that is not associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) ; andobtain the AP CSI report.30.An apparatus for wireless communication at a network node, comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:transmit, for a user equipment (UE) , downlink control information (DCI) triggering an aperiodic (AP) channel state information (CSI) report associated with a measured channel measurement resource (CMR) or a measured interference measurement resource (IMR) , wherein one or more quantities to be included in the AP CSI report are based on one or more prediction targets separate from the measured CMR or the measured IMR; andobtain the AP CSI report.