Reference signal configuration for channel state information inference
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-02-07
- Publication Date
- 2026-08-13
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Figure CN2025076181_13082026_PF_FP_ABST
Abstract
Description
REFERENCE SIGNAL CONFIGURATION FOR CHANNEL STATE INFORMATION INFERENCEFIELD OF TECHNOLOGY
[0001] The following relates to wireless communication, including reference signal configuration for channel state information (CSI) inference.BACKGROUND
[0002] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .SUMMARY
[0003] The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein.
[0004] A method for wireless communication by a user equipment (UE) is described. The method may include receiving control signaling indicating a channel state information (CSI) configuration that allocates, within an observation window, a quantity of reference signal occasions allocated in accordance with CSI prediction being enabled at the UE, where the CSI prediction enables reporting of predicted CSI according to CSI measurements obtained within the observation window, receiving one or more reference signals via the quantity of reference signal occasions within the observation window in accordance with the CSI configuration, and transmitting, in accordance with the CSI configuration, a CSI report including the predicted CSI that is predicted using a machine learning model and using the CSI measurements obtained in accordance with the one or more reference signals received within the observation window.
[0005] A UE for wireless communication is described. The UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the UE to receive control signaling indicating a CSI configuration that allocates, within an observation window, a quantity of reference signal occasions allocated in accordance with CSI prediction being enabled at the UE, where the CSI prediction enables reporting of predicted CSI according to CSI measurements obtained within the observation window, receive one or more reference signals via the quantity of reference signal occasions within the observation window in accordance with the CSI configuration, and transmit, in accordance with the CSI configuration, a CSI report including the predicted CSI that is predicted using a machine learning model and using the CSI measurements obtained in accordance with the one or more reference signals received within the observation window.
[0006] Another UE for wireless communication is described. The UE may include means for receiving control signaling indicating a CSI configuration that allocates, within an observation window, a quantity of reference signal occasions allocated in accordance with CSI prediction being enabled at the UE, where the CSI prediction enables reporting of predicted CSI according to CSI measurements obtained within the observation window, means for receiving one or more reference signals via the quantity of reference signal occasions within the observation window in accordance with the CSI configuration, and means for transmitting, in accordance with the CSI configuration, a CSI report including the predicted CSI that is predicted using a machine learning model and using the CSI measurements obtained in accordance with the one or more reference signals received within the observation window.
[0007] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by one or more processors (e.g., directly, indirectly, after pre-processing, without pre-processing) to receive control signaling indicating a CSI configuration that allocates, within an observation window, a quantity of reference signal occasions allocated in accordance with CSI prediction being enabled at the UE, where the CSI prediction enables reporting of predicted CSI according to CSI measurements obtained within the observation window, receive one or more reference signals via the quantity of reference signal occasions within the observation window in accordance with the CSI configuration, and transmit, in accordance with the CSI configuration, a CSI report including the predicted CSI that is predicted using a machine learning model and using the CSI measurements obtained in accordance with the one or more reference signals received within the observation window.
[0008] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the CSI configuration indicates a periodicity for the quantity of reference signals within the observation window.
[0009] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the CSI configuration indicates an aperiodic burst of the quantity of reference signal occasions within the observation window, the CSI configuration including a first parameter that indicates the quantity of reference signal occasions within the aperiodic burst and a second parameter that indicates a time between adjacent reference signal occasions within the aperiodic burst, the first parameter and the second parameter based on the CSI prediction being enabled.
[0010] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for monitoring the quantity of reference signal occasions in accordance with the CSI configuration, where one or more reference signal occasions that may be between at least two reference signal occasions of the quantity of reference signal occasions within the observation window may be not measured based on an occasion monitoring disablement pattern for the UE.
[0011] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the occasion monitoring disablement pattern indicates a first quantity of occasions and a second quantity of occasions, the second quantity of occasions to be disabled after every burst of the first quantity of occasions and the monitored quantity of reference signal occasions includes the first quantity of occasions and the one or more reference signal occasions include the second quantity of occasions.
[0012] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the CSI configuration indicates the occasion monitoring disablement pattern.
[0013] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a medium access control-control element (MAC-CE) that indicates the occasion monitoring disablement pattern, where the CSI configuration enables the quantity of reference signal occasions and the one or more reference signal occasions as periodic reference signal occasions.
[0014] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the CSI configuration indicates at least two periodic or semi-periodic reference signal occasions and one or more aperiodic reference signal occasions between the at least two periodic or semi-periodic reference signal occasions within the observation window and the CSI prediction may be based on measurements of each of the at least two periodic or semi-periodic reference signal occasions and the one or more aperiodic reference signal occasions within the observation window.
[0015] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the CSI configuration indicates one or more periodic reference signal occasions and one or more aperiodic reference signal occasions within the observation window, at least one aperiodic reference signal occasion overlapping in time with at least one periodic reference signal occasion and the CSI prediction may be performed based on a measurement of the at least one aperiodic reference signal occasion instead of the at least one periodic reference signal occasion.
[0016] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a CSI report configuration that enables the CSI prediction by the UE, where the CSI report configuration indicates a link between a first identifier (ID) of the at least one aperiodic reference signal occasion and a second ID of the at least one periodic reference signal occasion, and where the CSI report configuration or the CSI configuration indicates, to the UE, to refrain from measuring the at least one periodic reference signal occasion if the at least one periodic reference signal occasion overlaps with the at least one aperiodic reference signal occasion in time.
[0017] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the CSI report includes one or more ID of the one or more reference signals that may be measured and used for performing the CSI prediction.
[0018] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that the relative dimensions of the following figures may not be drawn to scale.BRIEF DESCRIPTION OF THE DRAWINGS
[0019] FIG. 1 shows an example of a wireless communications system that supports reference signal configuration for channel state information (CSI) inference in accordance with one or more aspects of the present disclosure.
[0020] FIG. 2 shows an example of a wireless communications system that supports reference signal configuration for channel state information inference in accordance with one or more aspects of the present disclosure.
[0021] FIGs. 3A and 3B show examples of CSI reference signal (CSI-RS) timelines that support reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure.
[0022] FIG. 4 shows an example of a process flow that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure.
[0023] FIGs. 5 and 6 show block diagrams of devices that support reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure.
[0024] FIG. 7 shows a block diagram of a communications manager that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure.
[0025] FIG. 8 shows a diagram of a system including a device that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure.
[0026] FIGs. 9 and 10 show flowcharts illustrating methods that support reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0027] In some wireless communications systems, a wireless device, such as a user equipment (UE) , may obtain channel state information (CSI) based on measurements of one or more reference signals. The UE may use the CSI to evaluate the characteristics of a wireless channel, adjust communication parameters, or both. Additionally, or alternatively, the UE may transmit a CSI report that reports the measured CSI to a network entity, and the network entity may adjust one or more communication parameters accordingly. In some cases, it may be beneficial for the UE to predict conditions of a channel at future time and report predicted CSI for the network entity to use for calibrating one or more communication parameters for communications via the channel at the future time. The UE may perform the CSI prediction using one or more artificial intelligence (AI) or machine learning (ML) models. Such CSI prediction may leverage already-obtained or measured CSI as input. Accordingly, techniques for scheduling CSI reference signals (CSI-RS) for measuring historical CSI to use for subsequent CSI prediction may reduce overhead and improve performance, among other examples.
[0028] Techniques, systems, methods, and devices described herein provide for modified CSI configurations that account for or otherwise allocate CSI-RS transmission occasions to enhance (e.g., optimize) subsequent CSI prediction by a UE. As described herein, a network entity may transmit a CSI configuration via control signaling (e.g., radio resource control (RRC) signaling) that configures some quantity of transmission occasions for CSI-RSs within an observation window. The observation window may be a duration allocated for the UE to obtain CSI measurements to use as input to a CSI prediction model. The configuration may modify a periodicity for CSI-RS transmission, a spacing between aperiodic CSI-RS transmissions, a pattern for enabling or disabling certain CSI-RS transmission occasions, or any combination thereof within the observation window to account for (e.g., optimize for) CSI prediction. In some examples, the network entity may transmit second control signaling (e.g., RRC signaling) before, at the same time as, or after the CSI configuration, the second control signaling may indicate a CSI report configuration for the UE. The CSI report configuration may enable the UE to perform CSI prediction using historical measurements of CSI obtained by measurements of the scheduled CSI-RSs within the observation window. In some examples, the CSI report configuration, a CSI-RS configuration, or both may represent examples of or sub-configurations within the CSI configuration described herein. The described CSI configurations may provide for sufficient CSI-RSs transmitted to the UE within an observation window for the UE to obtain reliable historical CSI information for inputting to the CSI prediction model while maintaining relatively low overhead. The UE may transmit a CSI report to the network entity including a result of the CSI prediction.
[0029] Aspects of the disclosure are initially described in the context of wireless communications systems. Additional aspects of the disclosure are described with reference to CSI-RS timelines and a process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to reference signal configuration for CSI inference.
[0030] FIG. 1 shows an example of a wireless communications system 100 that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more devices, such as one or more network devices (e.g., network entities 105) , one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0031] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via communication link (s) 125 (e.g., a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish the communication link (s) 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
[0032] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices in the wireless communications system 100 (e.g., other wireless communication devices, including UEs 115 or network entities 105) , as shown in FIG. 1.
[0033] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity described herein) , a UE 115 (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.
[0034] In some examples, network entities 105 may communicate with a core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via backhaul communication link (s) 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via backhaul communication link (s) 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via the core network 130) . In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication link (s) 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) or one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
[0035] One or more of the network entities 105 or network equipment described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within one network entity (e.g., a network entity 105 or a single RAN node, such as a base station 140) .
[0036] In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among multiple network entities (e.g., network entities 105) , such as an integrated access and backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 105 may include one or more of a central unit (CU) , such as a CU 160, a distributed unit (DU) , such as a DU 165, a radio unit (RU) , such as an RU 170, a RAN Intelligent Controller (RIC) , such as an RIC 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, such as an SMO system 180, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations) . In some examples, one or more of the network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0037] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, or any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaptation protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 (e.g., one or more CUs) may be connected to a DU 165 (e.g., one or more DUs) or an RU 170 (e.g., one or more RUs) , or some combination thereof, and the DUs 165, RUs 170, or both may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or multiple different RUs, such as an RU 170) . In some cases, a functional split between a CU 160 and a DU 165 or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to a DU 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to an RU 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities (e.g., one or more of the network entities 105) that are in communication via such communication links.
[0038] In some wireless communications systems (e.g., the wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) . In some cases, in an IAB network, one or more of the network entities 105 (e.g., network entities 105 or IAB node (s) 104) may be partially controlled by each other. The IAB node (s) 104 may be referred to as a donor entity or an IAB donor. A DU 165 or an RU 170 may be partially controlled by a CU 160 associated with a network entity 105 or base station 140 (such as a donor network entity or a donor base station) . The one or more donor entities (e.g., IAB donors) may be in communication with one or more additional devices (e.g., IAB node (s) 104) via supported access and backhaul links (e.g., backhaul communication link (s) 120) . IAB node (s) 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by one or more DUs (e.g., DUs 165) of a coupled IAB donor. An IAB-MT may be equipped with an independent set of antennas for relay of communications with UEs 115 or may share the same antennas (e.g., of an RU 170) of IAB node (s) 104 used for access via the DU 165 of the IAB node (s) 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB node (s) 104 may include one or more DUs (e.g., DUs 165) that support communication links with additional entities (e.g., IAB node (s) 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., the IAB node (s) 104 or components of the IAB node (s) 104) may be configured to operate according to the techniques described herein.
[0039] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support reference signal configuration for CSI inference as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., components such as an IAB node, a DU 165, a CU 160, an RU 170, an RIC 175, an SMO system 180) .
[0040] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a multimedia / entertainment device (e.g., a radio, a MP3 player, or a video device) , a camera, a gaming device, a navigation / positioning device (e.g., GNSS (global navigation satellite system) devices based on, for example, GPS (global positioning system) , Beidou, GLONASS, or Galileo, or a terrestrial-based device) , a tablet computer, a laptop computer, a netbook, a smartbook, a personal computer, a smart device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, virtual reality goggles, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet) ) , a drone, a robot / robotic device, a vehicle, a vehicular device, a meter (e.g., parking meter, electric meter, gas meter, water meter) , a monitor, a gas pump, an appliance (e.g., kitchen appliance, washing machine, dryer) , a location tag, a medical / healthcare device, an implant, a sensor / actuator, a display, or any other suitable device configured to communicate via a wireless or wired medium. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, vehicles, or meters, among other examples.
[0041] The UEs 115 described herein may be able to communicate with various types of devices, such as UEs 115 that may sometimes operate as relays, as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
[0042] The UEs 115 and the network entities 105 may wirelessly communicate with one another via the communication link (s) 125 (e.g., one or more access links) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined PHY layer structure for supporting the communication link (s) 125. For example, a carrier used for the communication link (s) 125 may include a portion of an RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more PHY layer channels for a given RAT (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each PHY layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network entity 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities, such as one or more of the network entities 105) .
[0043] In some examples, such as in a carrier aggregation configuration, a carrier may have acquisition signaling or control signaling that coordinates operations for other carriers. A carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute RF channel number (EARFCN) ) and may be identified according to a channel raster for discovery by the UEs 115. A carrier may be operated in a standalone mode, in which case initial acquisition and connection may be conducted by the UEs 115 via the carrier, or the carrier may be operated in a non-standalone mode, in which case a connection is anchored using a different carrier (e.g., of the same or a different RAT) .
[0044] The communication link (s) 125 of the wireless communications system 100 may include downlink transmissions (e.g., forward link transmissions) from a network entity 105 to a UE 115, uplink transmissions (e.g., return link transmissions) from a UE 115 to a network entity 105, or both, among other configurations of transmissions. Carriers may carry downlink or uplink communications (e.g., in an FDD mode) or may be configured to carry downlink and uplink communications (e.g., in a TDD mode) .
[0045] A carrier may be associated with a particular bandwidth of the RF spectrum and, in some examples, the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system 100. For example, the carrier bandwidth may be one of a set of bandwidths for carriers of a particular RAT (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz) ) . Devices of the wireless communications system 100 (e.g., the network entities 105, the UEs 115, or both) may have hardware configurations that support communications using a particular carrier bandwidth or may be configurable to support communications using one of a set of carrier bandwidths. In some examples, the wireless communications system 100 may include network entities 105 or UEs 115 that support concurrent communications using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured for operating using portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth.
[0046] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) . In a system employing MCM techniques, a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) , such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
[0047] One or more numerologies for a carrier may be supported, and a numerology may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier may be divided into one or more BWPs having the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.
[0048] The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of Ts=1 / (Δfmax·Nf) seconds, for which Δfmax may represent a supported subcarrier spacing, and Nf may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
[0049] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems, such as the wireless communications system 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0050] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
[0051] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to UEs 115 (e.g., one or more UEs) or may include UE-specific search space sets for sending control information to a UE 115 (e.g., a specific UE) .
[0052] In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area, such as the coverage area 110. In some examples, coverage areas 110 (e.g., different coverage areas) associated with different technologies may overlap, but the coverage areas 110 (e.g., different coverage areas) may be supported by the same network entity (e.g., a network entity 105) . In some other examples, overlapping coverage areas, such as a coverage area 110, associated with different technologies may be supported by different network entities (e.g., the network entities 105) . The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 support communications for coverage areas 110 (e.g., different coverage areas) using the same or different RATs.
[0053] The wireless communications system 100 may support synchronous or asynchronous operation. For synchronous operation, network entities 105 (e.g., base stations 140) may have similar frame timings, and transmissions from different network entities (e.g., different ones of the network entities 105) may be approximately aligned in time. For asynchronous operation, network entities 105 may have different frame timings, and transmissions from different network entities (e.g., different ones of network entities 105) may, in some examples, not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operations.
[0054] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
[0055] In some examples, a UE 115 may be configured to support communicating directly with other UEs (e.g., one or more of the UEs 115) via a device-to-device (D2D) communication link, such as a D2D communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to one or more of the UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
[0056] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
[0057] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than one hundred kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
[0058] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) RAT, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0059] A network entity 105 (e.g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
[0060] The network entities 105 or the UEs 115 may use MIMO communications to exploit multipath signal propagation and increase spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing. The multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords) . Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO) , for which multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO) , for which multiple spatial layers are transmitted to multiple devices.
[0061] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0062] A network entity 105 or a UE 115 may use beam sweeping techniques as part of beamforming operations. For example, a network entity 105 (e.g., a base station 140, an RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a network entity 105 multiple times along different directions. For example, the network entity 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device, such as a network entity 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the network entity 105.
[0063] Some signals, such as data signals associated with a particular receiving device, may be transmitted by a transmitting device (e.g., a network entity 105 or a UE 115) along a single beam direction (e.g., a direction associated with the receiving device, such as another network entity 105 or UE 115) . In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted along one or more beam directions. For example, a UE 115 may receive one or more of the signals transmitted by the network entity 105 along different directions and may report to the network entity 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
[0064] In some examples, transmissions by a device (e.g., by a network entity 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from a network entity 105 to a UE 115) . The UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across a system bandwidth or one or more sub-bands. The network entity 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a CSI-RS) , which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) . Although these techniques are described with reference to signals transmitted along one or more directions by a network entity 105 (e.g., a base station 140, an RU 170) , a UE 115 may employ similar techniques for transmitting signals multiple times along different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal along a single direction (e.g., for transmitting data to a receiving device) .
[0065] A receiving device (e.g., a UE 115) may perform reception operations in accordance with multiple receive configurations (e.g., directional listening) when receiving various signals from a transmitting device (e.g., a network entity 105) , such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may perform reception in accordance with multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions. In some examples, a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) . The single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
[0066] The UEs 115 and the network entities 105 may support retransmissions of data to increase the likelihood that data is received successfully. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly via a communication link (e.g., the communication link (s) 125, a D2D communication link 135) . HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC) ) , forward error correction (FEC) , and retransmission (e.g., automatic repeat request (ARQ) ) . HARQ may improve throughput at the MAC layer in relatively poor radio conditions (e.g., low signal-to-noise conditions) . In some examples, a device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific slot for data received via a previous symbol in the slot. In some other examples, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
[0067] In some examples, a network entity 105 may transmit one or more reference signals to one or more UEs 115. A UE 115 may measure the one or more reference signals to obtain CSI. The UE 115 may use the CSI to evaluate the characteristics of a wireless channel, adjust one or more communication parameters, or both. Additionally, or alternatively, the UE 115 may transmit a CSI report that reports the measured CSI to the network entity 105, and the network entity 105 may adjust one or more communication parameters accordingly. In some cases, it may be beneficial for the UE 115 to predict one or more conditions of a channel at future time and report predicted CSI for the network entity 105 to use for calibrating one or more communication parameters for communications via the channel at the future time. The UE 115 may perform the CSI prediction using a CSI prediction model, which may be an AI or ML model. Such CSI prediction may leverage already-obtained or measured CSI as input. Accordingly, techniques for scheduling CSI-RSs for measuring historical CSI to use for subsequent CSI prediction may reduce overhead and improve performance, among other examples.
[0068] Techniques, systems, methods, and devices described herein provide for modified CSI configurations that account for or otherwise allocate CSI-RS transmission occasions to enhance (e.g., optimize) subsequent CSI prediction by a UE 115. As described herein, a network entity 105 may transmit a CSI configuration via control signaling (e.g., RRC signaling) that configures some quantity of transmission occasions for CSI-RSs within an observation window. The observation window may be a duration allocated for a UE 115 to obtain CSI measurements to use as input to a CSI prediction model. The configuration may modify a periodicity for CSI-RS transmission, a spacing between aperiodic CSI-RS transmissions, a pattern for enabling or disabling certain CSI-RS transmission occasions, or any combination thereof within the observation window to account for (e.g., optimize for) CSI prediction. In some examples, the network entity 105 may transmit second control signaling (e.g., RRC signaling) before, at the same time as, or after the CSI configuration, the second control signaling may indicate a CSI report configuration for the UE 115. The CSI report configuration may enable the UE 115 to perform CSI prediction using historical measurements of CSI obtained by measurements of the scheduled CSI-RSs within the observation window. The described CSI configurations may provide for sufficient CSI-RSs transmitted to the UE 115 within an observation window for the UE 115 to obtain reliable historical CSI information for inputting to the CSI prediction model while maintaining relatively low overhead. The UE 115 may transmit a CSI report to the network entity 105 including a result of the CSI prediction.
[0069] FIG. 2 shows an example of a wireless communications system 200 that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure. The wireless communications system 200 may implement or be implemented by aspects of the wireless communications system 100. For example, the wireless communications system 200 includes a UE 115-a and a network entity 105-a, which may represent examples of corresponding devices as described with reference to FIG. 1. The network entity 105-a may communicate with the UE 115-a via one or more communication links 205 (e.g., the uplink communication link 205-b and the downlink communication link 205-a) and within a geographic coverage area 110-a (e.g., a cell) . In this example, the network entity 105-a may transmit a CSI configuration 220 that configures one or more reference signal transmission occasions to account for CSI prediction by the UE 115-a.
[0070] The network entity 105-a may transmit reference signals 225 to the UE 115-a during communications. The reference signals 225 may be CSI-RSs or some other type of reference signal. The network entity 105-a may transmit the reference signals 225 periodically, semi-periodically, aperiodically, or according to one or more other defined times based on a reference signal configuration. The network entity 105-amay first transmit a reference signal configuration that schedules a pattern for reference signal transmission, and the network entity 105-a may transmit the reference signals 225 according to the pattern. The UE 115-a may monitor for the reference signals 225 in one or more transmission occasions indicated by the reference signal configuration and may measure the reference signals 225 to obtain CSI. The network entity 105-a may additionally, or alternatively, transmit a CSI report configuration 230 that configures the UE 115-a to perform CSI reporting (e.g., to transmit one or more CSI reports 235) based on the CSI measurements. The CSI configuration 220 may, in some examples herein, include or otherwise convey the CSI report configuration 230. That is, the CSI configuration 220 may include or otherwise be referred to as the CSI report configuration 230, a reference signal configuration (e.g., CSI-RS configuration) , or both.
[0071] In some cases, there may be a relatively long delay between a first time at which the network entity 105-a transmits a reference signal 225 and a second time at which the network entity 105-a receives a CSI report 235 including CSI based on measurements of the reference signal 225. The CSI may include one or more parameters of the channel at the first time at which the reference signal 225 was transmitted, such as a channel quality indicator (CQI) , a precoding matrix indicator, or other parameters. Thus, there may be a relatively long delay for the network entity 105-a to obtain a precoder, among other examples, after the network entity 105-a transmits a CSI-RS. However, such outdated CSI may not reflect real-time changes in the channel, including in scenarios in which the UE 115-a is relatively dynamic or moving relatively quickly (e.g., high UE speed) .
[0072] To reduce delays in CSI reporting and improve communication reliability, the UE 115-a as described herein may perform CSI prediction. The UE 115-a may, for example, predict future CSI 245 at the UE 115-a based on one or more measurements (e.g., observations) of one or more reference signals 225. The UE 115-a may include a CSI prediction model 250, which may be an ML or AI model or some other data-driven logic or software (e.g., auto-regressive approach) that is configured to facilitate the prediction of the future CSI 245 based on historical CSI 240. For example, the network entity 105-a may transmit the reference signals 225-a, 225-b, 225-c, and 225-d to the UE 115-a (e.g., CSI-RSs) . The UE 115-a may receive the reference signals 225-a through 225-d, may measure the reference signals 225-a through 225-d, and may obtain CSI 240-a, 240-b, 240-c, and 240-d, respectively, based on measurements of each of the reference signals 225. The CSI 240-a through 240-d may be associated with four points in time at which the reference signals 225-a through 225-d are received, and may be referred to as historical CSI 240 after the fourth reference signal 225-d is received and measured. The UE 115-a may input the historical CSI 240-a through 240-d into a prediction model 250 at the UE 115-a (e.g., an AI or ML model) , and may generate (e.g., estimate, predict, calculate) the future CSI 245 using the CSI prediction model 250. The future CSI 245 may include one or more estimated CSI parameters at a future point-in-time.
[0073] The UE 115-a may convey the predicted or future CSI 245 to the network entity 105-a via a CSI report 235 (e.g., CSI feedback, such as via a Doppler codebook or some other codebook) . The UE 115-a may transmit a separate CSI report 235 for the future CSI 245, or the UE 115-a may report one or more of the historical CSI 240-a, 240-b, 240-c, and 240-d in addition to the future CSI 245 via a same CSI report 235.
[0074] The CSI prediction model 250 may use the historical CSI 240 as inputs to generate the future CSI 245. In order for the UE 115-a to obtain sufficient measurements of the historical CSI 240 for input to the CSI prediction model 250, the network entity 105-a may transmit reference signals 225 to the UE 115-a. The reference signals 225 may be periodic CSI-RSs, aperiodic CSI-RSs, semi-periodic CSI-RSs, or any combination thereof.
[0075] Techniques, systems, and devices described herein provide for improved CSI configurations. For example, the techniques described herein provide for the network entity 105-a to adjust or dynamically change configuration settings for CSI-RS transmissions based on various communication conditions or scenarios. In some examples described herein, the adjusted CSI configurations may provide for enhanced CSI prediction by, for example, improving a reliability, quantity, or timing of the reference signals 225 that are transmitted within an observation window of the UE 115-a to optimize inputs to the CSI prediction model 250 at the UE 115-a while maintaining a relatively lower overhead and throughput (e.g., without transmitting relatively large quantities of reference signals 225) . The observation window may be a defined duration during which the UE 115-a may measure reference signals 225 and obtain historical CSI 240 to use as inputs to the CSI prediction model 250.
[0076] The network entity 105-a may schedule transmission occasions via which the network entity 105-a may transmit the reference signals 225. The network entity 105-a may transmit a CSI configuration 220 (also referred to as a CSI-RS configuration in some examples herein) to the UE 115-a to indicate the transmission occasions for CSI-RS. The network entity 105-a may transmit the CSI configuration 220 via control signaling, such as an RRC configuration, or some other type of control signaling.
[0077] In some examples, the CSI configuration 220 may schedule periodic, semi-periodic, or aperiodic CSI-RS. That is, the CSI configuration 220 may indicate a periodicity associated with the transmission occasions or one or more time intervals or offsets for the transmission occasions. In some examples, the network entity 105-a may indicate, via the CSI configuration 220, whether the reference signals 225 scheduled by the CSI configuration 220 are to be used for CSI prediction. Additionally, or alternatively, the network entity 105-a may transmit a CSI report configuration 230 that configures the UE 115-a to report CSI 240, and the CSI report configuration 230 may reflect whether the reference signals 225 scheduled by the CSI configuration 220 are to be used for CSI prediction and reporting of the future CSI 245 or not. The network entity 105-a may transmit the CSI report configuration 230 via RRC signaling or some other type of control signaling. In some examples, the CSI report configuration 230 may be a sub-configuration conveyed within or otherwise associated with the CSI configuration 220.
[0078] In some other examples, the network entity 105-a may schedule, via the CSI configuration 220, one or more enhanced bursts of aperiodic reference signals 225, or the network entity 105-a may disable one or more transmission occasions for periodic reference signals 225, or both, to improve or otherwise optimize the reference signals 225 for CSI prediction. For example, the network entity 105-a may schedule the transmission occasions for the reference signals 225 such that there are sufficient occasions within the observation window for the UE 115-a to measure reference signals 225 and obtain historical CSI 240 without increasing overhead. Other example reference signal scheduling techniques are described in further detail elsewhere herein, including with reference to FIGs. 3A and 3B.
[0079] The UE 115-a may measure the reference signals 225 received during an observation window configured for CSI prediction by the UE 115-a. The UE 115-a may obtain the CSI 240-a, 240-b, 240-c, and 240-d, for example, based on the measurements, and may input the historical CSI 240 into the CSI prediction model 250. The UE 115-a may generate, in accordance with the CSI prediction model 250, the predicted CSI 245 and may transmit a CSI report 235 to the network entity 105-a to indicate the predicted CSI 245. In some examples, the UE 115-a may include, in the CSI report 235, one or more IDs of the reference signals 225-a through 225-d that are used for performing the CSI prediction. The network entity 105-a may thereby determine which reference signals 225 were used for historical CSI measurements and may use that information to further enhance or otherwise improve subsequent CSI configurations within subsequent observation windows for CSI prediction by the UE 115-a.
[0080] FIGs. 3A and 3B show examples of CSI-RS timelines 300 that support reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure. The CSI-RS timelines 300-a and 300-b may implement or be implemented by aspects of the wireless communications systems 100 and 200, as described with reference to FIGs. 1 and 2. For example, the CSI-RS timelines 300-a and 300-b illustrate example timelines for transmission of CSI-RSs 325 by a network entity to a UE in accordance with an adjusted CSI configuration. The network entity and the UE may represent examples of the network entity 105 and the UE 115 as described with reference to FIGs. 1 and 2. In this example, the adjusted CSI configuration may facilitate or otherwise improve CSI prediction by the UE.
[0081] FIG. 3A illustrates a first example CSI-RS timeline 300-a associated with periodic and aperiodic CSI-RS transmissions. In the example of the CSI-RS timeline 300-a, the network entity may transmit, to the UE, a CSI configuration that indicates aperiodic transmission occasions, periodic transmission occasions, or both.
[0082] The CSI-RS 325-a and the CSI-RS 325-g in FIG. 3A may represent examples of periodic CSI-RSs. For example, the CSI configuration may indicate the periodicity 320 and some duration or quantity of transmission occasions. Although only two periodic transmission occasions are shown in FIG. 3A, it is to be understood that the network entity may transmit a CSI-RS via each transmission occasion at each periodicity 320 until the indicated duration or quantity of occasions is complete. The UE may receive the CSI configuration and monitor for the periodic CSI-RSs accordingly.
[0083] The CSI-RS 325-b, the CSI-RS 325-c, the CSI-RS 325-d, the CSI-RS 325-e, and the CSI-RS 325-f in FIG. 3A may represent examples of aperiodic CSI-RSs. For example, the network entity may transmit, via the CSI configuration, an indication of a quantity of transmission occasions (K) (e.g., a first parameter) , a spacing 315 (m) (e.g., a second parameter) , and an offset 310 (X) from an A-CSI-RS trigger 305 (e.g., a third parameter) . The quantity, spacing 315, and offset 310 may indicate parameters for a burst of aperiodic CSI-RS transmission occasions. The UE may receive the CSI configuration and monitor for the aperiodic CSI-RSs within the indicated transmission occasions accordingly.
[0084] In some cases, the aperiodic CSI-RSs 325 may be relatively dense or frequent. For example, the network entity may configure an aperiodic CSI-RS burst with K= {2, 4, 8} and m= {1, 2} slots. However, such an aperiodic CSI-RS burst may schedule a relatively large quantity of CSI-RSs 325 within a relatively short period of time (e.g., every one or two slots) , which may not provide for efficient or reliable CSI measurements for CSI prediction, and may be associated with increased overhead.
[0085] As described herein, the network entity may indicate, via the CSI configuration, a flexible configuration for aperiodic CSI-RS 325 that may be similar to (e.g., mimic) a temporal CSI-RS 325 periodicity 320. Such an aperiodic CSI configuration may provide for a burst of relatively periodic CSI-RSs 325 for CSI measurement by the UE, without increasing overhead and power consumption, which may provide for the UE to obtain sufficient historical CSI measurements to input into a prediction model and predict future CSI reliably and accurately. For example, the network entity may indicate an enhanced aperiodic CSI-RS burst by indicating, via the CSI configuration, a spacing 315 between transmission occasions of five or ten or some other relatively large spacing (e.g., m= {5, 10} ) , and a quantity of occasions of that is sufficient for model training (e.g., K= {5, any number for model training} ) . For example, the network entity may schedule at least some threshold quantity of occasions within an observation window for CSI prediction by the UE, where the threshold quantity may be a minimum quantity of historical measurements for accurate CSI prediction by a prediction model of the UE. The UE may thereby observe transmission occasions starting with a first transmission occasion that is the offset 310 (e.g., in slots, seconds, or some other time unit) after the UE receives an A-CSI-RS trigger 305, and continuing every spacing 315 for the indicated quantity of occasions. Such parameters may define the locations of transmission occasions via which the CSI-RSs 325-b, 325-c, 325-d, 325-e, and 325-f are transmitted. The UE may measure the aperiodic CSI-RSs 325 and use the measurements of CSI as inputs to a prediction model.
[0086] Although both aperiodic and periodic CSI-RSs 325 are illustrated in FIG. 3A, it is to be understood that the network entity may configure only periodic CSI-RSs 325 or only aperiodic CSI-RSs 325, or any combination of the two types of CSI-RSs 325, among other CSI-RS types, such as semi-periodic.
[0087] In some examples, the periodicity 320 of periodic or semi-periodic CSI-RS 325 may be relatively large (e.g., 20 milliseconds) . If the periodicity 320 is reduced, the overhead associated with reference signal transmission and reception may increase, which my decrease communication efficiency. However, the relatively large periodicity 320 may not be sufficient for the UE to obtain historical CSI measurements within an observation window allocated for CSI prediction. Additionally, or alternatively, the aperiodic CSI-RSs 325 may not provide stable measurement occasions for continuous CSI prediction, as the aperiodic configurations may schedule bursts of reference signals, or the reference signal overhead may be relatively large if the bursts are increased or scheduled more frequently.
[0088] In some examples described herein, the network entity may disable one or more CSI-RS transmission occasions dynamically to provide for relatively consistent CSI-RSs 325 for measurement while reducing overhead as compared with continuous CSI-RS 325 transmissions. For example, the network entity may configure, via the CSI configuration, periodic or semi-periodic transmission occasions for CSI-RSs 325 according to some periodicity 320 which allows for at least a threshold quantity of transmission occasions and corresponding CSI measurements within an observation window for CSI prediction by the UE. The network entity may further indicate (e.g., dynamically or via the CSI configuration) one or more transmission occasions that may be disabled. For example, the network entity may disable one or more transmission occasions if the UE has reported a predicted CSI for the corresponding time slots to reduce overhead (e.g., since additional CSI measurements at those times may not be beneficial) . When the network entity disables a transmission occasion, the network entity may refrain from transmitting a CSI-RS 325 via the transmission occasion, and the UE may refrain from measuring or observing the CSI-RS 325 within the indicated transmission occasion.
[0089] The network entity may disable one or more periodic or semi-periodic CSI-RS transmission occasions, or both, via the CSI configuration according to one or more settings or parameters, or dynamically via a medium access control-control element (MAC-CE) or some other dynamic control signaling. For example, the network entity may indicate one or more transmission occasions, from among multiple scheduled transmission occasions, that may be disabled via the CSI configuration (e.g., predefined in RRC) . Such transmission occasions may be selected based on a CSI prediction setting for the UE. For example, if the network entity configures, via the CSI report configuration (e.g., which may be included in or otherwise associated with the CSI configuration) , the UE to predict CSI every x slots, the network entity may disable one or more transmission occasions in accordance with the configured prediction setting such that the network entity does not schedule CSI-RSs 325 during slots associated with predicted CSI. The CSI configuration may indicate, for example, an occasion monitoring disablement pattern, which may be defined according to a first quantity of occasions and a second quantity of occasions to be disabled after every burst of the first quantity of occasions. If the CSI configuration indicates the first quantity, x, and the second quantity, y, this may indicate that after every x CSI-RS occasions, the next y CSI-RS occasions are disabled. In the example of FIG. 3A, x may be three, and y may be two. For example, after three aperiodic CSI-RSs 325-b, 325-c, and 325-d, two subsequent CSI-RSs 325-e and 325-f may not be transmitted, as the corresponding transmission occasions may be disabled. In some examples, the CSI configuration or some other configuration may indicate values for the x and y parameters, and the occasion monitoring disablement pattern may be enabled or disabled via the CSI configuration or other configuration, which may indicate whether the UE is to use or ignore the x and y parameters. Additionally, or alternatively, the occasion monitoring disablement pattern may indicate a periodicity or a set of candidate occasions to disable, or both.
[0090] In some other examples, the CSI configuration may indicate a burst of aperiodic CSI-RSs 325, semi-periodic CSI-RSs 325, or both, and the network entity may transmit a MAC-CE to dynamically indicate the occasion monitoring disablement pattern (e.g., the pattern of which occasions are disabled) . For example, the MAC-CE may dynamically indicate that the occasions for the CSI-RSs 325-e and 325-f are disabled, or may dynamically indicate the first and second quantities that define a disablement pattern, or both.
[0091] FIG. 3B illustrates an example CSI-RS timeline 300-b associated with periodic (or semi-periodic) and aperiodic CSI-RS transmissions. In the example of the CSI-RS timeline 300-b, the network entity may transmit, to the UE, a CSI configuration that indicates both aperiodic transmission occasions and either periodic transmission occasions or semi-periodic transmission occasions.
[0092] The network entity may configure the UE to perform the CSI prediction based on measurements of CSI within some observation window 330. For example, the UE may use a prediction model to generate a predicted CSI 345 at a time that is after the observation window 330 based on measurements of the CSI-RSs 325 received during the observation window 330. The network entity may thereby enhance the CSI configuration to improve allocation of CSI-RSs 325 within the observation window 330 for the CSI prediction 350.
[0093] As described herein, the network entity may enhance the CSI configuration by configuring multiple types of CSI-RSs 325 that may or may not overlap. By configuring at least two types of CSI-RSs 325, the network entity may support robust CSI prediction at the UE. For example, the at least two types of CSI-RSs 325 may be used together for inference input (e.g., as inputs to the CSI prediction 350) . The periodic CSI-RSs 325-h and 325-o (e.g., P-CSI-RSs) may maintain a same periodicity with relatively lower overhead over time. For example, the periodicity 320 as described with reference to FIG. 3A may be relatively large to support consistent CSI-RS transmissions with reduced overhead. The aperiodic CSI-RS 325-i, 325-j, 325-k, 325-l, 325-m, and 325-n (e.g., A-CSI-RSs) may fill the gaps between the periodic CSI-RS measurements as needed or beneficial to the UE’s CSI prediction 350. In some examples, the CSI report configuration may include a CSI-RS ID list that lists some or all the IDs of the reference signals used for prediction.
[0094] In some examples, there may not be overlap between the periodic CSI-RSs 325 and the aperiodic CSI-RSs 325. For example, none of the transmission occasions for the periodic CSI-RSs 325 may overlap in time with any of the transmission occasions for aperiodic CSI-RSs 325 in time based on the periodicity 320 for the periodic CSI-RSs 325 not overlapping with any allocated occasions for the aperiodic CSI-RS burst. In the example of FIG. 3B, the network entity may not schedule the aperiodic CSI-RS 325-i or the aperiodic CSI-RS 325-n, as those CSI-RSs 325 may overlap with the periodic CSI-RSs 325-h and 325-o. If there is no overlap between CSI-RSs 325 within the observation window 330, then all CSI-RSs 325 received by the UE within the observation window 330 may be used for the CSI prediction 350. The UE may measure the CSI-RSs 325, input the associated CSI measurements to a prediction model, and generate a predicted CSI 345 accordingly.
[0095] In some other examples, there may be overlap between the periodic CSI-RSs 325 and the aperiodic CSI-RSs 325. For example, if the periodic CSI-RSs 325 are configured with a periodicity of 20 milliseconds, a first and fifth aperiodic CSI-RS 325 may be overlapping with the periodic CSI-RSs 325. In the example of FIG. 3B, the aperiodic CSI-RS 325-i may overlap with the periodic CSI-RS 325-h, and the aperiodic CSI-RS 325-n may overlap with the periodic CSI-RS 325-o. If there is overlap between the periodic and aperiodic CSI-RSs 325, the network entity may transmit a single CSI-RS 325. That is, the network entity may not support transmission of two CSI-RSs 325 at a same time. In some examples, the aperiodic CSI-RSs 325 may be allocated for the CSI prediction 350 and the periodic CSI-RSs 325 may be allocated for other purposes.
[0096] As described herein, the network entity and the UE may follow one or more rules for CSI-RS transmission and measurement when two CSI-RS transmission occasions overlap. In some examples, the UE may determine, based on the configuration of the observation window 330 (e.g., as indicated via a CSI report configuration) and the CSI configuration, that there may be overlap between at least two CSI-RSs 325, and the UE may determine how to handle the overlap. That is, the UE may determine which CSI-RS 325 of the overlapping CSI-RS 325-i and 325-h, for example, the network entity transmitted, and which CSI-RS 325 should be used for CSI prediction. The UE may include an ID of the corresponding CSI-RS that the UE determines is transmitted (e.g., and received, measured) in the CSI report that reports the measured and / or predicted CSI 345. In some examples, the CSI configuration or the CSI report configuration may indicate that the aperiodic CSI-RSs 325 are to be used for CSI prediction, and the UE may determine that the aperiodic CSI-RS 325-i is transmitted instead of the periodic CSI-RS 325-h accordingly, or vice versa. Additionally, or alternatively, if the aperiodic CSI-RS 325-i is configured via a different CSI configuration than the periodic CSI-RS 325-h, the UE may determine which CSI-RS is transmitted based on which CSI configuration is received more recently or is associated with a higher priority.
[0097] Additionally, or alternatively, CSI configuration, the CSI report configuration, or both may enable CSI prediction and indicate a link between a first ID of the aperiodic CSI-RS 325-i with a second ID of the periodic CSI-RS 325-h. That is, the CSI configuration or the CSI report configuration (e.g., CSI-RS configuration, communicated via RRC signaling, may be an aperiodic CSI-RS configuration) may link IDs of any pair of periodic and aperiodic CSI-RSs 325 that may overlap in time. In such cases, the UE may receive and measure either of the CSI-RS 325-i or the CSI-RS 325-h, and may report either ID via the CSI report, as the IDs may be linked. In some examples, the UE may measure the aperiodic CSI-RSs 325 to obtain historical CSI measurements to use for CSI prediction, and the UE may measure periodic CSI-RSs 325 to use for other purposes. In some examples, the CSI configuration, the CSI report configuration, or both, may instruct the UE to measure the aperiodic CSI-RS 325 and refrain from measuring the periodic CSI-RS 325 if there are overlapping transmission occasions, or vice versa.
[0098] FIG. 4 shows an example of a process flow 400 that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure. The process flow 400 may implement or may be implemented by aspects of the wireless communications systems 100 and 200 or the CSI-RS timelines 300, as described with reference to FIGs. 1–3B. For example, the process flow 400 illustrates communications exchanged between a UE 115-b and a network entity 105-b, which may represent examples of corresponding devices as described with reference to FIGs. 1–3B. In this example, the network entity 105-b may dynamically modify or otherwise enhance a CSI configuration for the UE 115-b based on the UE 115-b being configured to perform CSI prediction.
[0099] Alternative examples of the following may be implemented, where some steps are performed in a different order than described or are not performed at all. In some cases, steps may include additional features not mentioned below, or further steps may be added. Although the network entity 105-b and the UE 115-b are shown performing the operations of the process flow 400, some aspects of some operations may also be performed by one or more other wireless devices.
[0100] At 405, the network entity 105-b may transmit, to the UE 115-b, control signaling that indicates a CSI configuration (e.g., a CSI-RS configuration) . The CSI configuration may allocate, within an observation window for CSI prediction by the UE 115-b, a quantity of reference signal occasions. The quantity of reference signal occasions that are allocated by the network entity 105-b within the observation window may be based on the CSI prediction being enabled at the UE 115-b. The CSI prediction may enable the UE 115-b to report predicted CSI according to CSI measurements (e.g., historical CSI) obtained within the observation window. Although not illustrated in FIG. 4, it is to be understood that, in some examples, the network entity 105-b may transmit a CSI report configuration that enables the CSI prediction, indicates the observation window, or both. In some examples, the CSI configuration and the CSI report configuration may be linked or otherwise generated based on one another. For example, the CSI configuration may include an enhanced or otherwise modified CSI-RS allocation based on the CSI prediction being enabled.
[0101] At 410, the network entity 105-b may transmit, to the UE 115-b, one or more reference signals via the quantity of reference signal occasions within the observation window. The network entity 105-b may transmit the reference signals according to the CSI configuration. The reference signals may be CSI-RSs, or some other type of reference signals. In some examples, the reference signals may include aperiodic reference signals, semi-periodic reference signals, or periodic reference signals, or any combination thereof, as described in further detail elsewhere herein, including with reference to FIGs. 3A and 3B.
[0102] The UE 115-b may measure the reference signals received during the observation window. The UE 115-b may obtain measured CSI based on the reference signals. In some examples, the UE 115-b may report the measured CSI via one or more CSI reports. Additionally, or alternatively, the UE 115-b may store the measured CSI for subsequent CSI prediction (e.g., based on the CSI prediction being enabled and the reference signals being received within the observation window for CSI prediction) .
[0103] At 415, in some examples, the UE 115-b may generate a CSI prediction. For example, the UE 115-b may input the CSI measurements obtained during the observation window into a machine learning model or other prediction model at the UE 115-b, and the prediction model may output a predicted CSI. That is, the prediction model may generate an estimated or predicted CSI at a subsequent (e.g., future) time.
[0104] At 420, the UE 115-b may transmit a CSI report that includes the predicted CSI in accordance with the CSI report configuration and the CSI configuration. The CSI report may include one or more reference signal IDs that identify the one or more reference signals received and measured by the UE 115-b as part of the CSI prediction.
[0105] The network entity 105-b may thereby transmit an enhanced CSI configuration that is modified relative to other periodic or aperiodic CSI configurations in order to ensure that a quantity of CSI-RSs are scheduled within an observation window for CSI prediction by the UE 115-b. The scheduled quantity of CSI-RSs may provide for reliable CSI measurements within the observation window while balancing overhead. For example, the network entity 105-b may schedule the CSI-RSs such that the UE 115-b may be able to obtain sufficient CSI measurements within the observation window with extra or unused CSI-RSs being transmitted.
[0106] FIG. 5 shows a block diagram 500 of a device 505 that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure. The device 505 may be an example of aspects of a UE 115 as described herein. The device 505 may include a receiver 510, a transmitter 515, and a communications manager 520. The device 505, or one or more components of the device 505 (e.g., the receiver 510, the transmitter 515, the communications manager 520) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0107] The receiver 510 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to reference signal configuration for CSI inference) . Information may be passed on to other components of the device 505. The receiver 510 may utilize a single antenna or a set of multiple antennas.
[0108] The transmitter 515 may provide a means for transmitting signals generated by other components of the device 505. For example, the transmitter 515 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to reference signal configuration for CSI inference) . In some examples, the transmitter 515 may be co-located with a receiver 510 in a transceiver module. The transmitter 515 may utilize a single antenna or a set of multiple antennas.
[0109] The communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be examples of means for performing various aspects of reference signal configuration for CSI inference as described herein. For example, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0110] In some examples, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0111] Additionally, or alternatively, the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be implemented in code (e.g., as communications management software) executed by at least one processor (e.g., referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 520, the receiver 510, the transmitter 515, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0112] In some examples, the communications manager 520 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 510, the transmitter 515, or both. For example, the communications manager 520 may receive information from the receiver 510, send information to the transmitter 515, or be integrated in combination with the receiver 510, the transmitter 515, or both to obtain information, output information, or perform various other operations as described herein.
[0113] Additionally, or alternatively, the communications manager 520 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 520 is capable of, configured to, or operable to support a means for receiving control signaling indicating a CSI configuration that allocates, in an observation window, a quantity of reference signal occasions allocated in accordance with CSI prediction being enabled at the UE, where the CSI prediction enables reporting of predicted CSI according to CSI measurements obtained in the observation window. The communications manager 520 is capable of, configured to, or operable to support a means for receiving one or more reference signals via the quantity of reference signal occasions in the observation window in accordance with the CSI configuration. The communications manager 520 is capable of, configured to, or operable to support a means for transmitting, in accordance with the CSI configuration, a CSI report including the predicted CSI that is predicted using a machine learning model and using the CSI measurements obtained in accordance with the one or more reference signals received in the observation window.
[0114] By including or configuring the communications manager 520 in accordance with examples as described herein, the device 505 (e.g., at least one processor controlling or otherwise coupled with the receiver 510, the transmitter 515, the communications manager 520, or a combination thereof) may support techniques for reduced processing, reduced power consumption, and more efficient utilization of communication resources, among other examples.
[0115] FIG. 6 shows a block diagram 600 of a device 605 that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure. The device 605 may be an example of aspects of a device 505 or a UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. The device 605, or one or more components of the device 605 (e.g., the receiver 610, the transmitter 615, the communications manager 620) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0116] The receiver 610 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to reference signal configuration for CSI inference) . Information may be passed on to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.
[0117] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to reference signal configuration for CSI inference) . In some examples, the transmitter 615 may be co-located with a receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.
[0118] The device 605, or various components thereof, may be an example of means for performing various aspects of reference signal configuration for CSI inference as described herein. For example, the communications manager 620 may include a CSI configuration component 625, a reference signal component 630, a CSI report component 635, or any combination thereof. The communications manager 620 may be an example of aspects of a communications manager 520 as described herein. In some examples, the communications manager 620, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 610, the transmitter 615, or both. For example, the communications manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated in combination with the receiver 610, the transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.
[0119] The communications manager 620 may support wireless communication in accordance with examples as disclosed herein. The CSI configuration component 625 is capable of, configured to, or operable to support a means for receiving control signaling indicating a CSI configuration that allocates, in an observation window, a quantity of reference signal occasions allocated in accordance with CSI prediction being enabled at the UE, where the CSI prediction enables reporting of predicted CSI according to CSI measurements obtained in the observation window. The reference signal component 630 is capable of, configured to, or operable to support a means for receiving one or more reference signals via the quantity of reference signal occasions in the observation window in accordance with the CSI configuration. The CSI report component 635 is capable of, configured to, or operable to support a means for transmitting, in accordance with the CSI configuration, a CSI report including the predicted CSI that is predicted using a machine learning model and using the CSI measurements obtained in accordance with the one or more reference signals received in the observation window.
[0120] FIG. 7 shows a block diagram 700 of a communications manager 720 that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure. The communications manager 720 may be an example of aspects of a communications manager 520, a communications manager 620, or both, as described herein. The communications manager 720, or various components thereof, may be an example of means for performing various aspects of reference signal configuration for CSI inference as described herein. For example, the communications manager 720 may include a CSI configuration component 725, a reference signal component 730, a CSI report component 735, an occasion monitoring component 740, an occasion monitoring disablement component 745, a CSI prediction component 750, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0121] Additionally, or alternatively, the communications manager 720 may support wireless communication in accordance with examples as disclosed herein. The CSI configuration component 725 is capable of, configured to, or operable to support a means for receiving control signaling indicating a CSI configuration that allocates, in an observation window, a quantity of reference signal occasions allocated in accordance with CSI prediction being enabled at the UE, where the CSI prediction enables reporting of predicted CSI according to CSI measurements obtained in the observation window. The reference signal component 730 is capable of, configured to, or operable to support a means for receiving one or more reference signals via the quantity of reference signal occasions in the observation window in accordance with the CSI configuration. The CSI report component 735 is capable of, configured to, or operable to support a means for transmitting, in accordance with the CSI configuration, a CSI report including the predicted CSI that is predicted using a machine learning model and using the CSI measurements obtained in accordance with the one or more reference signals received in the observation window.
[0122] In some examples, the CSI configuration indicates a periodicity for the quantity of reference signals in the observation window.
[0123] In some examples, the CSI configuration indicates an aperiodic burst of the quantity of reference signal occasions in the observation window, the CSI configuration including a first parameter that indicates the quantity of reference signal occasions in the aperiodic burst and a second parameter that indicates a time between adjacent reference signal occasions in the aperiodic burst, the first parameter and the second parameter based on the CSI prediction being enabled.
[0124] In some examples, the occasion monitoring component 740 is capable of, configured to, or operable to support a means for monitoring the quantity of reference signal occasions in accordance with the CSI configuration, where one or more reference signal occasions that are between at least two reference signal occasions of the quantity of reference signal occasions in the observation window are not measured based on an occasion monitoring disablement pattern for the UE.
[0125] In some examples, the occasion monitoring disablement pattern indicates a first quantity of occasions and a second quantity of occasions, the second quantity of occasions to be disabled after every burst of the first quantity of occasions. In some examples, the monitored quantity of reference signal occasions includes the first quantity of occasions and the one or more reference signal occasions include the second quantity of occasions.
[0126] In some examples, the CSI configuration indicates the occasion monitoring disablement pattern.
[0127] In some examples, the occasion monitoring disablement component 745 is capable of, configured to, or operable to support a means for receiving a medium access control-control element that indicates the occasion monitoring disablement pattern, where the CSI configuration enables the quantity of reference signal occasions and the one or more reference signal occasions as periodic reference signal occasions.
[0128] In some examples, the CSI configuration indicates at least two periodic or semi-periodic reference signal occasions and one or more aperiodic reference signal occasions between the at least two periodic or semi-periodic reference signal occasions in the observation window. In some examples, the CSI prediction is based on measurements of each of the at least two periodic or semi-periodic reference signal occasions and the one or more aperiodic reference signal occasions in the observation window.
[0129] In some examples, the CSI configuration indicates one or more periodic reference signal occasions and one or more aperiodic reference signal occasions in the observation window, at least one aperiodic reference signal occasion overlapping in time with at least one periodic reference signal occasion. In some examples, the CSI prediction is performed based on a measurement of the at least one aperiodic reference signal occasion instead of the at least one periodic reference signal occasion.
[0130] In some examples, the CSI prediction component 750 is capable of, configured to, or operable to support a means for receiving a CSI report configuration that enables the CSI prediction by the UE, where the CSI report configuration indicates a link between a first identifier of the at least one aperiodic reference signal occasion and a second identifier of the at least one periodic reference signal occasion, and where the CSI report configuration or the CSI configuration indicates, to the UE, to refrain from measuring the at least one periodic reference signal occasion if the at least one periodic reference signal occasion overlaps with the at least one aperiodic reference signal occasion in time.
[0131] In some examples, the CSI report includes one or more identifiers of the one or more reference signals that are measured and used for performing the CSI prediction.
[0132] FIG. 8 shows a diagram of a system 800 including a device 805 that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure. The device 805 may be an example of or include components of a device 505, a device 605, or a UE 115 as described herein. The device 805 may communicate (e.g., wirelessly) with one or more other devices (e.g., network entities 105, UEs 115, or a combination thereof) . The device 805 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 820, an input / output (I / O) controller, such as an I / O controller 810, a transceiver 815, one or more antennas 825, at least one memory 830, code 835, and at least one processor 840. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 845) .
[0133] The I / O controller 810 may manage input and output signals for the device 805. The I / O controller 810 may also manage peripherals not integrated into the device 805. In some cases, the I / O controller 810 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 810 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 810 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 810 may be implemented as part of one or more processors, such as the at least one processor 840. In some cases, a user may interact with the device 805 via the I / O controller 810 or via hardware components controlled by the I / O controller 810.
[0134] In some cases, the device 805 may include a single antenna. However, in some other cases, the device 805 may have more than one antenna, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 815 may communicate bi-directionally via the one or more antennas 825 using wired or wireless links as described herein. For example, the transceiver 815 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 815 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 825 for transmission, and to demodulate packets received from the one or more antennas 825. The transceiver 815, or the transceiver 815 and one or more antennas 825, may be an example of a transmitter 515, a transmitter 615, a receiver 510, a receiver 610, or any combination thereof or component thereof, as described herein.
[0135] The at least one memory 830 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 830 may store computer-readable, computer-executable, or processor-executable code, such as the code 835. The code 835 may include instructions that, when executed by the at least one processor 840, cause the device 805 to perform various functions described herein. The code 835 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 835 may not be directly executable by the at least one processor 840 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 830 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0136] The at least one processor 840 may include one or more intelligent hardware devices (e.g., one or more general-purpose processors, one or more DSPs, one or more CPUs, one or more graphics processing units (GPUs) , one or more neural processing units (NPUs) (also referred to as neural network processors or deep learning processors (DLPs) ) , one or more microcontrollers, one or more ASICs, one or more FPGAs, one or more programmable logic devices, discrete gate or transistor logic, one or more discrete hardware components, or any combination thereof) . In some cases, the at least one processor 840 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 840. The at least one processor 840 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 830) to cause the device 805 to perform various functions (e.g., functions or tasks supporting reference signal configuration for CSI inference) . For example, the device 805 or a component of the device 805 may include at least one processor 840 and at least one memory 830 coupled with or to the at least one processor 840, the at least one processor 840 and the at least one memory 830 configured to perform various functions described herein.
[0137] In some examples, the at least one processor 840 may include multiple processors and the at least one memory 830 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions described herein. In some examples, the at least one processor 840 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 840) and memory circuitry (which may include the at least one memory 830) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 840 or a processing system including the at least one processor 840 may be configured to, configurable to, or operable to cause the device 805 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code 835 (e.g., processor-executable code) stored in the at least one memory 830 or otherwise, to perform one or more of the functions described herein.
[0138] Additionally, or alternatively, the communications manager 820 may support wireless communication in accordance with examples as disclosed herein. For example, the communications manager 820 is capable of, configured to, or operable to support a means for receiving control signaling indicating a CSI configuration that allocates, in an observation window, a quantity of reference signal occasions allocated in accordance with CSI prediction being enabled at the UE, where the CSI prediction enables reporting of predicted CSI according to CSI measurements obtained in the observation window. The communications manager 820 is capable of, configured to, or operable to support a means for receiving one or more reference signals via the quantity of reference signal occasions in the observation window in accordance with the CSI configuration. The communications manager 820 is capable of, configured to, or operable to support a means for transmitting, in accordance with the CSI configuration, a CSI report including the predicted CSI that is predicted using a machine learning model and using the CSI measurements obtained in accordance with the one or more reference signals received in the observation window.
[0139] By including or configuring the communications manager 820 in accordance with examples as described herein, the device 805 may support techniques for improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, and improved coordination between devices, among other examples.
[0140] In some examples, the communications manager 820 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 815, the one or more antennas 825, or any combination thereof. Although the communications manager 820 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 820 may be supported by or performed by the at least one processor 840, the at least one memory 830, the code 835, or any combination thereof. For example, the code 835 may include instructions executable by the at least one processor 840 to cause the device 805 to perform various aspects of reference signal configuration for CSI inference as described herein, or the at least one processor 840 and the at least one memory 830 may be otherwise configured to, individually or collectively, perform or support such operations.
[0141] FIG. 9 shows a flowchart illustrating a method 900 that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure. The operations of the method 900 may be implemented by a UE or its components as described herein. For example, the operations of the method 900 may be performed by a UE 115 as described with reference to FIGs. 1 through 8. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0142] At 905, the method may include receiving control signaling indicating a channel state information configuration that allocates, in an observation window for channel state information prediction, a quantity of reference signal occasions, the quantity of reference signal occasions allocated in accordance with the channel state information prediction being enabled at the UE, wherein the channel state information prediction enables reporting of predicted channel state information according to channel state information measurements obtained in the observation window. The operations of 905 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 905 may be performed by a CSI configuration component 725 as described with reference to FIG. 7.
[0143] At 910, the method may include receiving one or more reference signals via the quantity of reference signal occasions in the observation window in accordance with the channel state information configuration. The operations of 910 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 910 may be performed by a reference signal component 730 as described with reference to FIG. 7.
[0144] At 915, the method may include transmitting, in accordance with the channel state information configuration, a channel state information report comprising the predicted channel state information that is predicted using a machine learning model and one or more measurements of the one or more reference signals received in the observation window. The operations of 915 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 915 may be performed by a CSI report component 735 as described with reference to FIG. 7.
[0145] FIG. 10 shows a flowchart illustrating a method 1000 that supports reference signal configuration for CSI inference in accordance with one or more aspects of the present disclosure. The operations of the method 1000 may be implemented by a UE or its components as described herein. For example, the operations of the method 1000 may be performed by a UE 115 as described with reference to FIGs. 1 through 8. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0146] At 1005, the method may include receiving control signaling indicating a channel state information configuration that allocates, in an observation window for channel state information prediction, a quantity of reference signal occasions, the quantity of reference signal occasions allocated in accordance with the channel state information prediction being enabled at the UE, wherein the channel state information prediction enables reporting of predicted channel state information according to channel state information measurements obtained in the observation window. The operations of 1005 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1005 may be performed by a CSI configuration component 725 as described with reference to FIG. 7.
[0147] At 1010, the method may include monitoring the quantity of reference signal occasions in accordance with the channel state information configuration, wherein one or more reference signal occasions that are between at least two reference signal occasions of the quantity of reference signal occasions in the observation window are not measured based at least in part on an occasion monitoring disablement pattern for the UE. The operations of 1010 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1010 may be performed by an occasion monitoring component 740 as described with reference to FIG. 7.
[0148] At 1015, the method may include receiving one or more reference signals via the quantity of reference signal occasions in the observation window in accordance with the channel state information configuration. The operations of 1015 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1015 may be performed by a reference signal component 730 as described with reference to FIG. 7.
[0149] At 1020, the method may include transmitting, in accordance with the channel state information configuration, a channel state information report comprising the predicted channel state information that is predicted using a machine learning model and one or more measurements of the one or more reference signals received in the observation window. The operations of 1020 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1020 may be performed by a CSI report component 735 as described with reference to FIG. 7.
[0150] The following provides an overview of aspects of the present disclosure:
[0151] Aspect 1: A method for wireless communication by a UE, comprising: receiving control signaling indicating a CSI configuration that allocates, within an observation window, a quantity of reference signal occasions allocated in accordance with CSI prediction being enabled at the UE, wherein the CSI prediction enables reporting of predicted CSI according to CSI measurements obtained within the observation window; receiving one or more reference signals via the quantity of reference signal occasions within the observation window in accordance with the CSI configuration; and transmitting, in accordance with the CSI configuration, a CSI report comprising the predicted CSI that is predicted using a machine learning model and using the channel state information measurements obtained in accordance with the one or more reference signals received within the observation window.
[0152] Aspect 2: The method of aspect 1, wherein the CSI configuration indicates a periodicity for the quantity of reference signals within the observation window.
[0153] Aspect 3: The method of any of aspects 1 through 2, wherein the CSI configuration indicates an aperiodic burst of the quantity of reference signal occasions within the observation window, the CSI configuration comprising a first parameter that indicates the quantity of reference signal occasions within the aperiodic burst and a second parameter that indicates a time between adjacent reference signal occasions within the aperiodic burst, the first parameter and the second parameter based at least in part on the CSI prediction being enabled.
[0154] Aspect 4: The method of any of aspects 1 through 3, further comprising: monitoring the quantity of reference signal occasions in accordance with the CSI configuration, wherein one or more reference signal occasions that are between at least two reference signal occasions of the quantity of reference signal occasions within the observation window are not measured based at least in part on an occasion monitoring disablement pattern for the UE.
[0155] Aspect 5: The method of aspect 4, wherein the occasion monitoring disablement pattern indicates a first quantity of occasions and a second quantity of occasions, the second quantity of occasions to be disabled after every burst of the first quantity of occasions; and the monitored quantity of reference signal occasions comprises the first quantity of occasions and the one or more reference signal occasions comprise the second quantity of occasions.
[0156] Aspect 6: The method of any of aspects 4 through 5, wherein the CSI configuration indicates the occasion monitoring disablement pattern.
[0157] Aspect 7: The method of any of aspects 4 through 5, further comprising: receiving a MAC-CE that indicates the occasion monitoring disablement pattern, wherein the CSI configuration enables the quantity of reference signal occasions and the one or more reference signal occasions as periodic reference signal occasions.
[0158] Aspect 8: The method of any of aspects 1 through 7, wherein the CSI configuration indicates at least two periodic or semi-periodic reference signal occasions and one or more aperiodic reference signal occasions between the at least two periodic or semi-periodic reference signal occasions within the observation window; and the CSI prediction is based at least in part on measurements of each of the at least two periodic or semi-periodic reference signal occasions and the one or more aperiodic reference signal occasions within the observation window.
[0159] Aspect 9: The method of any of aspects 1 through 7, wherein the CSI configuration indicates one or more periodic reference signal occasions and one or more aperiodic reference signal occasions within the observation window, at least one aperiodic reference signal occasion overlapping in time with at least one periodic reference signal occasion; and the CSI prediction is performed based at least in part on a measurement of the at least one aperiodic reference signal occasion instead of the at least one periodic reference signal occasion.
[0160] Aspect 10: The method of aspect 9, further comprising: receiving a CSI report configuration that enables the CSI prediction by the UE, wherein the CSI report configuration indicates a link between a first ID of the at least one aperiodic reference signal occasion and a second ID of the at least one periodic reference signal occasion, and wherein the CSI report configuration or the CSI configuration indicates, to the UE, to refrain from measuring the at least one periodic reference signal occasion if the at least one periodic reference signal occasion overlaps with the at least one aperiodic reference signal occasion in time.
[0161] Aspect 11: The method of any of aspects 1 through 10, wherein the CSI report comprises one or more IDs of the one or more reference signals that are measured and used for performing the CSI prediction.
[0162] Aspect 12: A UE for wireless communication, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 1 through 11.
[0163] Aspect 13: A UE for wireless communication, comprising at least one means for performing a method of any of aspects 1 through 11.
[0164] Aspect 14: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors (e.g., directly, indirectly, after pre-processing, without pre-processing) to perform a method of any of aspects 1 through 11.
[0165] It should be noted that the methods described herein describe possible implementations. The operations and the steps may be rearranged or otherwise modified and other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0166] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
[0167] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0168] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, a graphics processing unit (GPU) , a neural processing unit (NPU) , an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
[0169] The functions described herein may be implemented using hardware, software executed by a processor, or any combination thereof. Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, or functions, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0170] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, phase change memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0171] As used herein, including in the claims, “or” as used in a list of items (e.g., including a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means, e.g., A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ” As used herein, the term “and / or, ” when used in a list of two or more items, means that any one of the listed items can be employed by itself, or any combination of two or more of the listed items can be employed. For example, if a composition is described as containing components A, B, and / or C, the composition can contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B, and C in combination.
[0172] As used herein, including in the claims, the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. For example, if a claim recites “a component” that performs one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “a component” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
[0173] The term “determine” or “determining” or “identify” or “identifying” encompasses a variety of actions and, therefore, “determining” or “identifying” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” or “identifying” can include receiving (such as receiving information or signaling, e.g., receiving information or signaling for determining, receiving information or signaling for identifying) , accessing (such as accessing data in a memory, or accessing information) and the like. Also, “determining” or “identifying” can include resolving, obtaining, selecting, choosing, establishing and other such similar actions.
[0174] In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label or other subsequent reference label.
[0175] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some figures, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0176] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment (UE) , comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:receive control signaling indicating a channel state information configuration that allocates, in an observation window, a quantity of reference signal occasions allocated in accordance with channel state information prediction being enabled at the UE, wherein the channel state information prediction enables reporting of predicted channel state information according to channel state information measurements obtained in the observation window;receive one or more reference signals via the quantity of reference signal occasions in the observation window in accordance with the channel state information configuration; andtransmit, in accordance with the channel state information configuration, a channel state information report comprising the predicted channel state information that is predicted using a machine learning model and using the channel state information measurements obtained in accordance with the one or more reference signals received in the observation window.2.The UE of claim 1, wherein the channel state information configuration indicates a periodicity for the quantity of reference signals in the observation window.3.The UE of claim 1, wherein the channel state information configuration indicates an aperiodic burst of the quantity of reference signal occasions in the observation window, the channel state information configuration comprising a first parameter that indicates the quantity of reference signal occasions in the aperiodic burst and a second parameter that indicates a time between adjacent reference signal occasions within the aperiodic burst, the first parameter and the second parameter based at least in part on the channel state information prediction being enabled.4.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:monitor the quantity of reference signal occasions in accordance with the channel state information configuration, wherein one or more reference signal occasions that are between at least two reference signal occasions of the quantity of reference signal occasions in the observation window are not measured based at least in part on an occasion monitoring disablement pattern for the UE.5.The UE of claim 4, wherein:the occasion monitoring disablement pattern indicates a first quantity of occasions and a second quantity of occasions, the second quantity of occasions to be disabled after every burst of the first quantity of occasions; andthe monitored quantity of reference signal occasions comprises the first quantity of occasions and the one or more reference signal occasions comprise the second quantity of occasions.6.The UE of claim 4, wherein the channel state information configuration indicates the occasion monitoring disablement pattern.7.The UE of claim 4, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a medium access control-control element that indicates the occasion monitoring disablement pattern, wherein the channel state information configuration enables the quantity of reference signal occasions and the one or more reference signal occasions as periodic reference signal occasions.8.The UE of claim 1, wherein:the channel state information configuration indicates at least two periodic or semi-periodic reference signal occasions and one or more aperiodic reference signal occasions between the at least two periodic or semi-periodic reference signal occasions in the observation window; andthe channel state information prediction is based at least in part on measurements of each of the at least two periodic or semi-periodic reference signal occasions and the one or more aperiodic reference signal occasions in the observation window.9.The UE of claim 1, wherein:the channel state information configuration indicates one or more periodic reference signal occasions and one or more aperiodic reference signal occasions in the observation window, at least one aperiodic reference signal occasion overlapping in time with at least one periodic reference signal occasion; andthe channel state information prediction is performed based at least in part on a measurement of the at least one aperiodic reference signal occasion instead of the at least one periodic reference signal occasion.10.The UE of claim 9, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a channel state information report configuration that enables the channel state information prediction by the UE, wherein the channel state information report configuration indicates a link between a first identifier of the at least one aperiodic reference signal occasion and a second identifier of the at least one periodic reference signal occasion, and wherein the channel state information report configuration or the channel state information configuration indicates, to the UE, to refrain from measuring the at least one periodic reference signal occasion if the at least one periodic reference signal occasion overlaps with the at least one aperiodic reference signal occasion in time.11.The UE of claim 1, wherein the channel state information report comprises one or more identifiers of the one or more reference signals that are measured and used for performing the channel state information prediction.12.A method for wireless communication by a user equipment (UE) , comprising:receiving control signaling indicating a channel state information configuration that allocates, in an observation window, a quantity of reference signal occasions allocated in accordance with channel state information prediction being enabled at the UE, wherein the channel state information prediction enables reporting of predicted channel state information according to channel state information measurements obtained in the observation window;receiving one or more reference signals via the quantity of reference signal occasions in the observation window in accordance with the channel state information configuration; andtransmitting, in accordance with the channel state information configuration, a channel state information report comprising the predicted channel state information that is predicted using a machine learning model and using the channel state information measurements obtained in accordance with the one or more reference signals received in the observation window.13.The method of claim 12, wherein the channel state information configuration indicates a periodicity for the quantity of reference signals in the observation window.14.The method of claim 12, wherein the channel state information configuration indicates an aperiodic burst of the quantity of reference signal occasions in the observation window, the channel state information configuration comprising a first parameter that indicates the quantity of reference signal occasions in the aperiodic burst and a second parameter that indicates a time between adjacent reference signal occasions in the aperiodic burst, the first parameter and the second parameter based at least in part on the channel state information prediction being enabled.15.The method of claim 12, further comprising:monitoring the quantity of reference signal occasions in accordance with the channel state information configuration, wherein one or more reference signal occasions that are between at least two reference signal occasions of the quantity of reference signal occasions in the observation window are not measured based at least in part on an occasion monitoring disablement pattern for the UE.16.The method of claim 15, wherein:the occasion monitoring disablement pattern indicates a first quantity of occasions and a second quantity of occasions, the second quantity of occasions to be disabled after every burst of the first quantity of occasions; andthe monitored quantity of reference signal occasions comprises the first quantity of occasions and the one or more reference signal occasions comprise the second quantity of occasions.17.The method of claim 15, wherein the channel state information configuration indicates the occasion monitoring disablement pattern.18.The method of claim 15, further comprising:receiving a medium access control-control element that indicates the occasion monitoring disablement pattern, wherein the channel state information configuration enables the quantity of reference signal occasions and the one or more reference signal occasions as periodic reference signal occasions.19.A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors to:receive control signaling indicating a channel state information configuration that allocates, in an observation window, a quantity of reference signal occasions allocated in accordance with channel state information prediction being enabled at a user equipment (UE) , wherein the channel state information prediction enables reporting of predicted channel state information according to channel state information measurements obtained in the observation window;receive one or more reference signals via the quantity of reference signal occasions in the observation window in accordance with the channel state information configuration; andtransmit, in accordance with the channel state information configuration, a channel state information report comprising the predicted channel state information that is predicted using a machine learning model and using the channel state information measurements obtained in accordance with the one or more reference signals received in the observation window.20.The non-transitory computer-readable medium of claim 19, wherein the channel state information configuration indicates a periodicity for the quantity of reference signals in the observation window.