Downlink beam prediction recommendation and reporting
AI/ML models for UE beam prediction in wireless communications systems address inefficiencies in beam management by optimizing spatial domain beam characteristics, reducing overhead and power consumption, and enhancing beam selection accuracy.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2026-03-19
AI Technical Summary
Existing wireless communication systems face challenges in efficiently managing beam characteristics due to high overhead and power consumption when multiple quasi co-located (QCL) source reference signals are used for beam prediction, leading to inefficient scheduling and increased UE power consumption.
Implementing artificial intelligence (AI) or machine learning (ML) models for UE beam prediction, using L1-RSRPs measured from TRSs and UE receive beam information to predict spatial domain beam characteristics, reducing the need for multiple CSI-RS transmissions and optimizing beam selection.
Reduces overhead and UE power consumption by predicting beam characteristics more efficiently, improving beam selection accuracy and reducing latency in wireless communications systems.
Smart Images

Figure CN2024117908_19032026_PF_FP_ABST
Abstract
Description
DOWNLINK BEAM PREDICTION RECOMMENDATION AND REPORTING
[0001] FIELD OF TECHNOLOGY
[0002] The following relates to wireless communications, including downlink beam prediction recommendation and reporting.BACKGROUND
[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .SUMMARY
[0004] The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein.
[0005] A method for wireless communications by a user equipment (UE) is described. The method may include receiving one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a set of multiple prediction targets for the UE, a set of multiple quasi co-located (QCL) source reference signals for at least one prediction target of the set of multiple prediction targets, and one or more measurement resources for the UE, performing a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the set of multiple prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters, and transmitting the measurement prediction report including a predicted measurement of the one or more predicted measurements and including an indication of at least one QCL source reference signal of the set of multiple QCL source reference signals, where the predicted measurement is for the at least one prediction target of the set of multiple prediction targets corresponding to the at least one QCL source reference signal.
[0006] A UE for wireless communications is described. The UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the UE to receive one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a set of multiple prediction targets for the UE, a set of multiple QCL source reference signals for at least one prediction target of the set of multiple prediction targets, and one or more measurement resources for the UE, perform a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the set of multiple prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters, and transmit the measurement prediction report including a predicted measurement of the one or more predicted measurements and including an indication of at least one QCL source reference signal of the set of multiple QCL source reference signals, where the predicted measurement is for the at least one prediction target of the set of multiple prediction targets corresponding to the at least one QCL source reference signal.
[0007] Another UE for wireless communications is described. The UE may include means for receiving one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a set of multiple prediction targets for the UE, a set of multiple QCL source reference signals for at least one prediction target of the set of multiple prediction targets, and one or more measurement resources for the UE, means for performing a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the set of multiple prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters, and means for transmitting the measurement prediction report including a predicted measurement of the one or more predicted measurements and including an indication of at least one QCL source reference signal of the set of multiple QCL source reference signals, where the predicted measurement is for the at least one prediction target of the set of multiple prediction targets corresponding to the at least one QCL source reference signal.
[0008] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to receive one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a set of multiple prediction targets for the UE, a set of multiple QCL source reference signals for at least one prediction target of the set of multiple prediction targets, and one or more measurement resources for the UE, perform a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the set of multiple prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters, and transmit the measurement prediction report including a predicted measurement of the one or more predicted measurements and including an indication of at least one QCL source reference signal of the set of multiple QCL source reference signals, where the predicted measurement is for the at least one prediction target of the set of multiple prediction targets corresponding to the at least one QCL source reference signal.
[0009] Some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a second indication that respective prediction targets of the set of multiple prediction targets may be QCLed with respective measurement resources of the one or more measurement resources.
[0010] Some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a third indication that the respective prediction targets share a same spatial transmission filter.
[0011] In some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein, the set of multiple prediction targets may be each associated with a different QCL source reference signal and the measurement prediction report may be for one prediction target per reporting occasion.
[0012] Some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, in conjunction with the one or more measurement resources, a second indication of one or more candidate QCL source reference signals that correspond to a prediction target of the set of multiple prediction targets.
[0013] Some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, via the measurement prediction report, a corresponding predicted measurement of the prediction target and information corresponding to the one or more candidate QCL source reference signals.
[0014] Some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a second indication of a prediction target of the set of multiple prediction targets that corresponds to all measurement resources of the one or more measurement resources.
[0015] In some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein, the measurement prediction report includes a QCL source reference signal corresponding to the prediction target.
[0016] Some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a message indicating the prediction target.
[0017] In some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein, a payload size of the measurement prediction report may be fixed.
[0018] In some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein, a payload size of the measurement prediction report may be based on a quantity of the set of multiple QCL source reference signals.
[0019] In some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein, the measurement prediction report includes respective identifiers of the at least one prediction target.
[0020] In some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein, the measurement prediction report includes a respective QCL source reference signal of the set of multiple QCL source reference signals for the at least one prediction target.
[0021] Some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, via the measurement prediction report, the predicted measurement corresponding to a single QCL source reference signal of the set of multiple QCL source reference signals without a UE preference for a given QCL source reference signal of the set of multiple QCL source reference signals.
[0022] In some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein, the measurement prediction report may be transmitted based on the set of multiple prediction targets being aperiodic channel state information reference signals.
[0023] In some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein, the measurement prediction report may be transmitted based on QCL Type D being applied for the set of multiple QCL source reference signals.
[0024] Some examples of the method, user equipment UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for configuring one or more beams based on the measurement prediction report, where the one or more beams share a same spatial transmission filter with the set of multiple QCL source reference signals.
[0025] 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
[0026] FIG. 1 shows an example of a wireless communications system that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure.
[0027] FIG. 2 shows an example of a measurement resource to prediction target diagram that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure.
[0028] FIG. 3 shows an example of a measurement resource to prediction target diagram that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure.
[0029] FIG. 4 shows an example of a measurement resource to prediction target diagram that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure.
[0030] FIG. 5 shows an example of a measurement resource to prediction target diagram that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure.
[0031] FIG. 6 shows an example of a process flow diagram that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure.
[0032] FIGs. 7 and 8 show block diagrams of devices that support downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure.
[0033] FIG. 9 shows a block diagram of a communications manager that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure.
[0034] FIG. 10 shows a diagram of a system including a device that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure.
[0035] FIG. 11 shows a flowchart illustrating methods that support downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0036] In some wireless communications systems, a user equipment (UE) and a network entity may perform beam management procedures in order to determine beam characteristics. In some examples, UEs, network entities, or both, may be configured to utilize an artificial intelligence (AI) or machine learning (ML) model to determine or predict beam characteristics. The UE may use the models to predict spatial domain beam characteristics for a set of prediction targets based on measurement results for a set of measurement resources. In providing spatial beam predictions, only tracking reference signals (TRSs) or channel state information reference signals (CSI-RSs) can be used as a quasi co-located (QCL) source for physical downlink shared channel (PDSCH) -demodulation reference signals (DMRSs) . If other CSI-RSs are used for P2-refinement (e.g., transmit beam refinement) , a network entity still has to indicate PDSCH-DRMSs QCL source reference signals via the TRS that the other CSI-RSs are QCL’d with.
[0037] For a given CSI-RS, only a single transmission configuration indicator (TCI) -state can be configured via a radio resource control (RRC) message (for port / antenna port CSI-RS) or indicated by a medium access control-control element (MAC-CE) (for semi-persistent CSI-RS) . In an example where a narrow beam is among two neighboring parent wide beams, one of the wide beams may lead to a higher layer one (L1) -reference signal received power (RSRP) / L1-signal to interference and noise ratio (SINR) despite the other wide beam being closer to the narrow beam (due to UE orientation / rotation changes, propagations and reflections, blockage, interference, etc. ) . However, to determine which of the wide beams could be used as a better TypeD-QCL source, a network entity may schedule two CSI-RSs for L1-RSRP / SINR reporting, which from a UE’s perspective may be two irrelevant CSI-RSs. This may cause additional overhead and UE power consumption.
[0038] In spatial beam prediction, prediction targets (e.g., Set-A beams) are less likely to be TRSs or CSI-RSs with repetition. Consequently, a network entity must assume the prediction target’s QCL source, so that beam prediction results reported by a UE referring to prediction targets can be used for scheduling PDSCH. In an example, measurement resources (e.g., Set-B beams) are TRSs while prediction targets are not transmitted. Here, each prediction target is signaled to be QCL’d with a respective set of measurement resources, and a UE may report predicted L1-RSRPs with regard to respective prediction targets based on the measurements of the TRS beams. Then the network entity may use the UE-preferred predicted target to transmit PDSCH, but the TCI-state associated with the PDSCH should refer to the parent TRS that the prediction target is QCL’d with. When beam prediction is used instead of actual RS measurements, the multiple QCL source RS hypotheses do not have to be solved by transmitting multiple CSI-RSs based on the same transmit beams. Consequently, overhead and UE power consumption may be reduced.
[0039] UEs, network entities, or both, may be configured to utilize an AI or ML model to determine and predict beam characteristics. A UE may use the models to predict spatial domain beam characteristics for a set of prediction target resources based on measurement results for a set of measurement resources. In training AI / ML models for UE beam prediction, AI / ML inputs are L1-RSRPs measured from TRSs and UE receive beam information. AI / ML outputs are predicted L1-RSRPs on prediction targets, plus a preferred TRS identifier if a prediction is associated with multiple TRSs as QCL sources. AI or ML techniques may be implemented by a UE for beam management, including beam prediction in time, and / or spatial domains for overhead and latency reduction and beam selection accuracy improvement.
[0040] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further illustrated by and described with reference to measurement resource to prediction target diagrams and process flow diagrams. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to downlink beam prediction recommendation and reporting.
[0041] FIG. 1 shows an example of a wireless communications system 100 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more devices, such as one or more network devices (e.g., network entities 105) , one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0042] 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) .
[0043] 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.
[0044] 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.
[0045] 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.
[0046] 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) .
[0047] 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) ) .
[0048] 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.
[0049] 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.
[0050] 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 downlink beam prediction recommendation and reporting 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) .
[0051] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, vehicles, or meters, among other examples.
[0052] 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.
[0053] 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) .
[0054] 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) .
[0055] 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.
[0056] 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) .
[0057] 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.
[0058] 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) ) .
[0059] 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) .
[0060] 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.
[0061] 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.
[0062] 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.
[0063] 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.
[0064] 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.
[0065] 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.
[0066] 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.
[0067] 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) .
[0068] 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.
[0069] 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.
[0070] 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 channel state information reference signal (CSI-RS) ) , which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) . Although these techniques are described with reference to signals transmitted along one or more directions by a network entity 105 (e.g., a base station 140, an RU 170) , a UE 115 may employ similar techniques for transmitting signals multiple times along different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal along a single direction (e.g., for transmitting data to a receiving device) .
[0071] 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) .
[0072] A UE may receive reporting configuration messages to determine a measurement prediction report where the configuration messages may indicate at least prediction parameters for a plurality of prediction targets for the UE, a plurality of QCL source reference signals for at least a portion of the plurality of prediction targets, and measurement resources for the UE. The UE may then perform a measurement prediction procedure in accordance with the measurement resources to obtain predicted measurements for the plurality of prediction targets utilizing the received prediction parameters. The UE may then transmit the measurement prediction report that includes the predicted measurements and an indication of at least one QCL source reference signal of the plurality of QCL source reference signals. The predicted measurement may be for the at least one prediction target of the plurality of prediction targets corresponding to the at least one QCL source reference signal.
[0073] FIG. 2 shows an example of a measurement resource to prediction target diagram 200 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. Measurement resource to prediction target diagram 200 may include a set of Set-B (e.g., measurement resources) beam IDs 205 and a set of Set-A (e.g., prediction targets) beam IDs 210.
[0074] A network entity may transmit, and a UE may receive, one or more configuration messages for a measurement prediction report. In an example, a network entity may request a UE to report prediction parameters such as L1-RSRPs / SINRs for a set of prediction targets based on CSI-RS or virtual non-transmitted prediction targets. In a further example, a network entity may signal multiple candidate TypeA / B / C / D QCL source RSs for one or more prediction targets of a plurality of prediction targets. Such candidate QCL source RSs may be chosen from the measurement resources.
[0075] The configuration messages may indicate prediction parameters for a plurality of prediction targets for the UE, a plurality of QCL source reference signals for at least a portion of the plurality of prediction targets, and measurement resources for the UE. In an example, the network entity may signal a set of measurement resources for the prediction based on SSBs or CSI-RSs. For CSI reports, both prediction targets and measurement resources may be RRC configured by a corresponding CSI report / resource setting for port / antenna port / semi-persistent CSI reports, or CSI-AssociatedReportConfigInfo for an access point CSI report, or a MAC-CE activating the CSI report for semi-persistent CSI reports. For a MAC-CE, prediction targets and measurement resources may be RRC configured and / or updated via MAC-CE.
[0076] A UE may perform the requested measurement prediction procedure in accordance with the measurement resources to obtain predicted measurements for the plurality of prediction targets utilizing the received prediction parameters.
[0077] The UE may then transmit the measurement prediction report that includes the predicted measurements and an indication of at least one QCL source reference signal of the plurality of QCL source reference signals. The measurement report may be transmitted via CSI report or MAC-CE and may indicate beam IDs associated with the predicted targets and the measurement resources. The predicted measurement may be for the at least one prediction target of the plurality of prediction targets corresponding to the at least one QCL source reference signal.
[0078] In measurement resource to prediction target diagram 200, particular Set-B beam IDs 205 may be mapped to particular Set-A beam IDs 210. In this example, each Set-B beam ID may only be associated with one SSB or CSI-RS resource and each Set-A beam ID may be associated with one or more CSI-RS or virtual non-transmitted prediction targets. In an example, candidate QCL source RSs for Set-A beam #3 may be associated with Set-B beam #1 and set-B beam #2.
[0079] FIG. 3 shows an example of a measurement resource to prediction target diagram 300 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. Measurement resource to prediction target diagram 300 may include a set of Set-B (e.g., measurement resources) beam IDs 305, a set of Set-A (e.g., prediction targets) beam IDs 310, and a set of prediction target IDs 315.
[0080] In examples involving a legacy QCL configuration framework with TypeE QCL relationships, a UE may receive an indication from a network entity that prediction targets are QCL’d with respective measurement resources. For example, a network entity may signal multiple prediction targets (via CSI-RS or virtual non-transmitted prediction targets) that are respectively TypeA / B / C / D-QCL’d with multiple different measurement resources (via SSBs or CSI-RSs) . In another case, a UE may receive an indication from a network entity that respective prediction targets share a same spatial transmission filter (e.g., signaled to be TypeE-QCL’d) . In some examples, the same spatial filter can be guaranteed by the TypeE-QCL relationships among the prediction targets.
[0081] In another example, among the multiple prediction targets that are based on a same spatial Tx filter (e.g., TypeE-QCL’d with each other) but associated w / different TypeA / B / C / D-QCL source RSs, the prediction targets may be each associated with a different QCL source reference signal. In this instance, the measurement prediction report may be for one prediction target per reporting occasion. In other words, at most one prediction target may be addressed in the prediction results feedback per reporting occasion. Here, a UE may report feedback for the best preferred TypeA / B / C / D-QCL source RS among the candidate ones. In some examples, a network entity may then signal a TCI-state whose TypeA / B / C / D-QCL source RS is the UE reported one, but the beam that is actually used is a narrow-beam associated with the prediction targets addressed in the UE beam prediction results feedback.
[0082] In measurement resource to prediction target diagram 300, particular Set-B beam IDs 305 may be mapped to particular Set-A beam IDs 310. In this example, each Set-B beam ID may only be associated with one SSB or CSI-RS resource and each Set-A beam ID may be linked with one or more prediction target IDs 315, where each Set-A beam ID may be associated with one or more CSI-RS or virtual non-transmitted prediction targets. In an example, prediction target #3a and prediction target #3b may share a same spatial transmission filter as Set-A beam #3 (e.g., they are signaled to be TypeE-QCL’d with each other) . But prediction target #3a and prediction target #3b may have been TypeA / B / C / D-QCL’d with Set-B beam #1 and Set-B beam #2, respectively, since Set-A beam #3 may be associated with Set-B beam #1 and set-B beam #2. A UE may address one of prediction target #3a or prediction target #3b in the prediction results feedback per reporting occasion. Similarly, prediction target pairs of #4a and #4b, #6a and #6b, #7a and #7b, #9a and #9b, and #10a and #10b, may correspond to candidate TypeA / B / C / D-QCL source RS pairs (Set-B beam pairs) #1 and #2, #2 and #3, #2 and #3, #3 and #4, and #3 and #4, respectively.
[0083] FIG. 4 shows an example of a measurement resource to prediction target diagram 400 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. Measurement resource to prediction target diagram 400 may include a set of Set-B (e.g., measurement resources) beam IDs 405 and a set of Set-A (e.g., prediction targets) beam IDs 410.
[0084] In examples involving an enhanced QCL configuration framework, a UE may receive in conjunction with measurement resources, an indication from a network entity of candidate QCL source reference signals that correspond to a prediction target. For example, the network entity may signal one prediction target (via CSI-RS or virtual non-transmitted prediction target) together with its candidate TypeA / B / C / D-QCL source RSs among the measurement resources (via SSBs or CSI-RSs) . In this case, the same spatial filter is guaranteed since all candidate TypeA / B / C / D-QCL source RSs are under the same prediction target. Additionally, a UE may transmit a corresponding predicted measurement of the prediction target along with information corresponding to the candidate QCL source reference signals in its measurement prediction report. For example, the measurement prediction report may address at most one TypeA / B / C / D-QCL source RS among the candidates for the addressed prediction target, in the same measurement prediction report. Here, a network entity may then signal a TCI-state whose TypeA / B / C / D-QCL source RS is one that the UE reported, but the beam that is actually used is a narrow-beam associated with the prediction targets addressed in the UE beam prediction results.
[0085] In measurement resource to prediction target diagram 400, particular Set-B beam IDs 405 may be mapped to particular Set-A beam IDs 410. In this example, each Set-B beam ID may only be associated with one SSB or CSI-RS resource and each Set-A beam ID is linked with a single prediction target ID, where each Set-A beam ID may be signaled as one or more CSI-RS or virtual non-transmitted prediction targets. In an example from a network entity signaling perspective, for prediction target #1, its candidate TypeA / B / C / D-QCL source RS is only Set-B beam #1, and for prediction target #2, its candidate TypeA / B / C / D-QCL source RSs include only Set-B beam #1 and Set-B beam #2.
[0086] In an example from a UE feedback perspective, if prediction target #1 is addressed, then a UE may not provide feedback for preferred TypeA / B / C / D-QCL source RS, and the reported prediction results may be derived assuming the TypeA / B / C / D-QCL source RS is Set-B beam #1. In another example, if prediction target #3 is addressed, a UE may provide feedback for one preferred TypeA / B / C / D-QCL source RS, and the reported prediction results may be derived assuming the TypeA / B / C / D-QCL source RS is based on the reported measurement resource as the preferred TypeA / B / C / D-QCL source RS.
[0087] FIG. 5 shows an example of a measurement resource to prediction target diagram 500 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. Measurement resource to prediction target diagram 500 may include a set of Set-B (e.g., measurement resources) beam IDs 505 and a set of Set-A (e.g., prediction targets) beam IDs 510.
[0088] In examples involving a standard predefined QCL configuration framework, a UE may receive an indication of a prediction target that corresponds to all measurement resources. For example, a network entity may signal one prediction target (via CSI-RS or virtual non-transmitted prediction target) , while its candidate TypeA / B / C / D-QCL source RSs are all measurement resources (i.e., all Set-B beams) . In a further example, a measurement prediction report may include a QCL source reference signal corresponding to the prediction target. Here, the measurement prediction report may address one TypeA / B / C / D-QCL source RS among the candidate ones for the addressed prediction target. A network entity may then signal a TCI-state whose TypeA / B / C / D-QCL source RS is reported by a UE, but the beam that is actually used is a narrow-beam associated with the prediction targets addressed in the UE beam prediction results feedback.
[0089] In another example, a UE may receive a message indicating the prediction target. For example, the message may be RRC signaling for the CSI report, resource setting, CSI-AssociatedReportConfigInfo, or MAC-CE activating a semi-persistent CSI report.
[0090] In measurement resource to prediction target diagram 300, particular Set-B beam IDs 305 may be mapped to particular Set-A beam IDs 310. In this example, each Set-B beam ID may only be associated with one SSB or CSI-RS resource and each Set-A beam ID may be linked with one prediction target ID, where each Set-A beam ID may be associated with one or more CSI-RS or virtual non-transmitted prediction targets. Here, each Set-A beam ID is potentially TypeA / B / C / D-QCL’d with all the set-B beam IDs.
[0091] FIG. 6 shows an example of a process flow diagram 600 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. In some examples, the process flow diagram 600 may implement or be implemented by aspects of the wireless communications system 100 as described with reference to FIG. 1. For example, the process flow diagram 600 may be implemented by a network entity 105-b, which may be an example of the network entities 105 as described with reference to FIG. 1. The process flow diagram 600 may be implemented by a UE 115-b, which may be an example of the UEs as described with reference to FIG. 1.
[0092] At 605, network entity 105-b may transmit, and UE 115-b may receive, one or more configuration messages for determining a measurement prediction report. The configuration messages may indicate at least prediction parameters for a plurality of prediction targets for the UE, a plurality of QCL source reference signals for at least a portion of the plurality of prediction targets, and measurement resources for the UE.
[0093] At 610, UE 115-b may perform a measurement prediction procedure in accordance with the measurement resources to obtain predicted measurements for the plurality of prediction targets utilizing the received prediction parameters.
[0094] At 615, UE 115-b may transmit the measurement prediction report that includes the predicted measurements and an indication of at least one QCL source reference signal of the plurality of QCL source reference signals. The predicted measurement may be for the at least one prediction target of the plurality of prediction targets corresponding to the at least one QCL source reference signal. In some examples, a payload size of the measurement prediction report may be fixed. In some examples, a payload size of the measurement prediction report may be based at least in part on a quantity of the plurality of QCL source reference signals.
[0095] In some examples, the measurement prediction report may include respective identifiers for prediction targets of the plurality of prediction targets. In some examples, the measurement prediction report includes respective QCL source reference signals for prediction targets of the plurality of prediction targets. In some examples, the measurement prediction report includes a predicted measurement corresponding to a single QCL source reference signal of a plurality of QCL source reference signals without a UE preference for a given QCL source reference signal of the plurality of QCL source reference signals. In some examples, the measurement prediction report is transmitted based at least in part on the plurality of prediction targets being aperiodic channel state information reference signals. In some examples, the measurement prediction report is transmitted based at least in part on QCL Type D being applied for the plurality of QCL source reference signals. In some examples, UE 115-b may configure one or more beams based at least in part on the measurement prediction report, where the one or more beams share a same spatial transmission filter with a plurality of QCL source reference signals.
[0096] In some examples, to allow a UE to identify a preferred TypeA / B / C / D-QCL source RS among candidate source RSs, a corresponding AI / ML model may be trained based on datasets where the candidate TypeA / B / C / D-QCL source RSs are utilized to determine respective receive beams. In some examples, parameters in terms of number or choices of TypeA / B / C / D-QCL source RS candidates for a particular prediction target, may be consistent across model training and inference. In some cases, given an AI / ML model, Set-B beams’ transmit spatial filters with regard to the candidate TypeA / B / C / D-QCL source RSs considered during model training &inference, may be the same. For instance, CSI-RSs may be transmitted and their measured L1-RSRPs may be considered as labels for the considered AI / ML model. Additionally, a network entity may signal TypeE-QCL on a plurality of CSI-RSs associated with different TypeA / B / C / D-QCL source RSs as being associated with the same Set-A beam. Alternatively, CSI-RSs associated with different TypeA / B / C / D-QCL source RSs may be regarding a same Set-A beam. In some cases, during data collection procedures, a particular Set-A beam may be scheduled based on a CSI-RS resource set with repetition, wherein different CSI-RS resources in the resource set, may be signaled with different QCL source RSs.
[0097] FIG. 7 shows a block diagram 700 of a device 705 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. The device 705 may be an example of aspects of a UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. The device 705, or one or more components of the device 705 (e.g., the receiver 710, the transmitter 715, the communications manager 720) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0098] The receiver 710 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to downlink beam prediction recommendation and reporting) . Information may be passed on to other components of the device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.
[0099] The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to downlink beam prediction recommendation and reporting) . In some examples, the transmitter 715 may be co-located with a receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.
[0100] The communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be examples of means for performing various aspects of downlink beam prediction recommendation and reporting as described herein. For example, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0101] In some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0102] Additionally, or alternatively, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor (e.g., referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0103] In some examples, the communications manager 720 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 710, the transmitter 715, or both. For example, the communications manager 720 may receive information from the receiver 710, send information to the transmitter 715, or be integrated in combination with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.
[0104] The communications manager 720 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 720 is capable of, configured to, or operable to support a means for receiving one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a set of multiple prediction targets for the UE, a set of multiple QCL source reference signals for at least one prediction target of the set of multiple prediction targets, and one or more measurement resources for the UE. The communications manager 720 is capable of, configured to, or operable to support a means for performing a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the set of multiple prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters. The communications manager 720 is capable of, configured to, or operable to support a means for transmitting the measurement prediction report including a predicted measurement of the one or more predicted measurements and including an indication of at least one QCL source reference signal of the set of multiple QCL source reference signals, where the predicted measurement is for the at least one prediction target of the set of multiple prediction targets corresponding to the at least one QCL source reference signal.
[0105] By including or configuring the communications manager 720 in accordance with examples as described herein, the device 705 (e.g., at least one processor controlling or otherwise coupled with the receiver 710, the transmitter 715, the communications manager 720, or a combination thereof) may support techniques for downlink beam prediction recommendation and reporting which may reduce overhead and UE power consumption.
[0106] FIG. 8 shows a block diagram 800 of a device 805 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. The device 805 may be an example of aspects of a device 705 or a UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communications manager 820. The device 805, or one of more components of the device 805 (e.g., the receiver 810, the transmitter 815, the communications manager 820) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0107] The receiver 810 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to downlink beam prediction recommendation and reporting) . Information may be passed on to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.
[0108] The transmitter 815 may provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to downlink beam prediction recommendation and reporting) . In some examples, the transmitter 815 may be co-located with a receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.
[0109] The device 805, or various components thereof, may be an example of means for performing various aspects of downlink beam prediction recommendation and reporting as described herein. For example, the communications manager 820 may include a configuration component 825 a measurement prediction component 830, or any combination thereof. The communications manager 820 may be an example of aspects of a communications manager 720 as described herein. In some examples, the communications manager 820, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 may receive information from the receiver 810, send information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.
[0110] The communications manager 820 may support wireless communications in accordance with examples as disclosed herein. The configuration component 825 is capable of, configured to, or operable to support a means for receiving one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a set of multiple prediction targets for the UE, a set of multiple QCL source reference signals for at least one prediction target of the set of multiple prediction targets, and one or more measurement resources for the UE. The measurement prediction component 830 is capable of, configured to, or operable to support a means for performing a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the set of multiple prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters. The measurement prediction component 830 is capable of, configured to, or operable to support a means for transmitting the measurement prediction report including a predicted measurement of the one or more predicted measurements and including an indication of at least one QCL source reference signal of the set of multiple QCL source reference signals, where the predicted measurement is for the at least one prediction target of the set of multiple prediction targets corresponding to the at least one QCL source reference signal.
[0111] FIG. 9 shows a block diagram 900 of a communications manager 920 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. The communications manager 920 may be an example of aspects of a communications manager 720, a communications manager 820, or both, as described herein. The communications manager 920, or various components thereof, may be an example of means for performing various aspects of downlink beam prediction recommendation and reporting as described herein. For example, the communications manager 920 may include a configuration component 925, a measurement prediction component 930, a QCL component 935, a prediction target component 940, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0112] The communications manager 920 may support wireless communications in accordance with examples as disclosed herein. The configuration component 925 is capable of, configured to, or operable to support a means for receiving one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a set of multiple prediction targets for the UE, a set of multiple QCL source reference signals for at least one prediction target of the set of multiple prediction targets, and one or more measurement resources for the UE. The measurement prediction component 930 is capable of, configured to, or operable to support a means for performing a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the set of multiple prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters. In some examples, the measurement prediction component 930 is capable of, configured to, or operable to support a means for transmitting the measurement prediction report including a predicted measurement of the one or more predicted measurements and including an indication of at least one QCL source reference signal of the set of multiple QCL source reference signals, where the predicted measurement is for the at least one prediction target of the set of multiple prediction targets corresponding to the at least one QCL source reference signal.
[0113] In some examples, the QCL component 935 is capable of, configured to, or operable to support a means for receiving a second indication that respective prediction targets of the set of multiple prediction targets are QCLed with respective measurement resources of the one or more measurement resources.
[0114] In some examples, the prediction target component 940 is capable of, configured to, or operable to support a means for receiving a third indication that the respective prediction targets share a same spatial transmission filter.
[0115] In some examples, the set of multiple prediction targets are each associated with a different QCL source reference signal. In some examples, the measurement prediction report is for one prediction target per reporting occasion.
[0116] In some examples, the QCL component 935 is capable of, configured to, or operable to support a means for receiving, in conjunction with the one or more measurement resources, a second indication of one or more candidate QCL source reference signals that correspond to a prediction target of the set of multiple prediction targets.
[0117] In some examples, the measurement prediction component 930 is capable of, configured to, or operable to support a means for transmitting, via the measurement prediction report, a corresponding predicted measurement of the prediction target and information corresponding to the one or more candidate QCL source reference signals.
[0118] In some examples, the prediction target component 940 is capable of, configured to, or operable to support a means for receiving a second indication of a prediction target of the set of multiple prediction targets that corresponds to all measurement resources of the one or more measurement resources.
[0119] In some examples, the measurement prediction report includes a QCL source reference signal corresponding to the prediction target.
[0120] In some examples, the prediction target component 940 is capable of, configured to, or operable to support a means for receiving a message indicating the prediction target.
[0121] In some examples, a payload size of the measurement prediction report is fixed.
[0122] In some examples, a payload size of the measurement prediction report is based on a quantity of the set of multiple QCL source reference signals.
[0123] In some examples, the measurement prediction report includes respective identifiers of the at least one prediction target.
[0124] In some examples, the measurement prediction report includes a respective QCL source reference signal of the set of multiple QCL source reference signals for the at least one prediction target.
[0125] In some examples, the measurement prediction component 930 is capable of, configured to, or operable to support a means for transmitting, via the measurement prediction report, the predicted measurement corresponding to a single QCL source reference signal of the set of multiple QCL source reference signals without a UE preference for a given QCL source reference signal of the set of multiple QCL source reference signals.
[0126] In some examples, the measurement prediction report is transmitted based on the set of multiple prediction targets being aperiodic channel state information reference signals.
[0127] In some examples, the measurement prediction report is transmitted based on QCL Type D being applied for the set of multiple QCL source reference signals.
[0128] In some examples, the configuration component 925 is capable of, configured to, or operable to support a means for configuring one or more beams based on the measurement prediction report, where the one or more beams share a same spatial transmission filter with the set of multiple QCL source reference signals.
[0129] FIG. 10 shows a diagram of a system 1000 including a device 1005 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. The device 1005 may be an example of or include components of a device 705, a device 805, or a UE 115 as described herein. The device 1005 may communicate (e.g., wirelessly) with one or more other devices (e.g., network entities 105, UEs 115, or a combination thereof) . The device 1005 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1020, an input / output (I / O) controller, such as an I / O controller 1010, a transceiver 1015, one or more antennas 1025, at least one memory 1030, code 1035, and at least one processor 1040. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1045) .
[0130] The I / O controller 1010 may manage input and output signals for the device 1005. The I / O controller 1010 may also manage peripherals not integrated into the device 1005. In some cases, the I / O controller 1010 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 1010 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 1010 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 1010 may be implemented as part of one or more processors, such as the at least one processor 1040. In some cases, a user may interact with the device 1005 via the I / O controller 1010 or via hardware components controlled by the I / O controller 1010.
[0131] In some cases, the device 1005 may include a single antenna. However, in some other cases, the device 1005 may have more than one antenna, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1015 may communicate bi-directionally via the one or more antennas 1025 using wired or wireless links as described herein. For example, the transceiver 1015 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1015 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 1025 for transmission, and to demodulate packets received from the one or more antennas 1025. The transceiver 1015, or the transceiver 1015 and one or more antennas 1025, may be an example of a transmitter 715, a transmitter 815, a receiver 710, a receiver 810, or any combination thereof or component thereof, as described herein.
[0132] The at least one memory 1030 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 1030 may store computer-readable, computer-executable, or processor-executable code, such as the code 1035. The code 1035 may include instructions that, when executed by the at least one processor 1040, cause the device 1005 to perform various functions described herein. The code 1035 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1035 may not be directly executable by the at least one processor 1040 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1030 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0133] The at least one processor 1040 may include one or more intelligent hardware devices (e.g., one or more general-purpose processors, one or more DSPs, one or more CPUs, one or more graphics processing units (GPUs) , one or more neural processing units (NPUs) (also referred to as neural network processors or deep learning processors (DLPs) ) , one or more microcontrollers, one or more ASICs, one or more FPGAs, one or more programmable logic devices, discrete gate or transistor logic, one or more discrete hardware components, or any combination thereof) . In some cases, the at least one processor 1040 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 1040. The at least one processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 1030) to cause the device 1005 to perform various functions (e.g., functions or tasks supporting downlink beam prediction recommendation and reporting) . For example, the device 1005 or a component of the device 1005 may include at least one processor 1040 and at least one memory 1030 coupled with or to the at least one processor 1040, the at least one processor 1040 and the at least one memory 1030 configured to perform various functions described herein.
[0134] In some examples, the at least one processor 1040 may include multiple processors and the at least one memory 1030 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions described herein. In some examples, the at least one processor 1040 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1040) and memory circuitry (which may include the at least one memory 1030) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 1040 or a processing system including the at least one processor 1040 may be configured to, configurable to, or operable to cause the device 1005 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code 1035 (e.g., processor-executable code) stored in the at least one memory 1030 or otherwise, to perform one or more of the functions described herein.
[0135] The communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1020 is capable of, configured to, or operable to support a means for receiving one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a set of multiple prediction targets for the UE, a set of multiple QCL source reference signals for at least one prediction target of the set of multiple prediction targets, and one or more measurement resources for the UE. The communications manager 1020 is capable of, configured to, or operable to support a means for performing a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the set of multiple prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters. The communications manager 1020 is capable of, configured to, or operable to support a means for transmitting the measurement prediction report including a predicted measurement of the one or more predicted measurements and including an indication of at least one QCL source reference signal of the set of multiple QCL source reference signals, where the predicted measurement is for the at least one prediction target of the set of multiple prediction targets corresponding to the at least one QCL source reference signal.
[0136] By including or configuring the communications manager 1020 in accordance with examples as described herein, the device 1005 may support techniques for downlink beam prediction recommendation and reporting which may reduce overhead and UE power consumption.
[0137] In some examples, the communications manager 1020 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1015, the one or more antennas 1025, or any combination thereof. Although the communications manager 1020 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1020 may be supported by or performed by the at least one processor 1040, the at least one memory 1030, the code 1035, or any combination thereof. For example, the code 1035 may include instructions executable by the at least one processor 1040 to cause the device 1005 to perform various aspects of downlink beam prediction recommendation and reporting as described herein, or the at least one processor 1040 and the at least one memory 1030 may be otherwise configured to, individually or collectively, perform or support such operations.
[0138] FIG. 11 shows a flowchart illustrating a method 1100 that supports downlink beam prediction recommendation and reporting in accordance with one or more aspects of the present disclosure. The operations of the method 1100 may be implemented by a UE or its components as described herein. For example, the operations of the method 1100 may be performed by a UE 115 as described with reference to FIGs. 1 through 10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0139] At 1105, the method may include receiving one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a set of multiple prediction targets for the UE, a set of multiple QCL source reference signals for at least one prediction target of the set of multiple prediction targets, and one or more measurement resources for the UE. The operations of 1105 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1105 may be performed by a configuration component 925 as described with reference to FIG. 9.
[0140] At 1110, the method may include performing a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the set of multiple prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters. The operations of 1110 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1110 may be performed by a measurement prediction component 930 as described with reference to FIG. 9.
[0141] At 1115, the method may include transmitting the measurement prediction report including a predicted measurement of the one or more predicted measurements and including an indication of at least one QCL source reference signal of the set of multiple QCL source reference signals, where the predicted measurement is for the at least one prediction target of the set of multiple prediction targets corresponding to the at least one QCL source reference signal. The operations of 1115 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1115 may be performed by a measurement prediction component 930 as described with reference to FIG. 9.
[0142] The following provides an overview of aspects of the present disclosure:
[0143] Aspect 1: A method for wireless communications at a UE, comprising: receiving one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a plurality of prediction targets for the UE, a plurality of QCL source reference signals for at least one prediction target of the plurality of prediction targets, and one or more measurement resources for the UE; performing a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the plurality of prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters; and transmitting the measurement prediction report comprising a predicted measurement of the one or more predicted measurements and comprising an indication of at least one QCL source reference signal of the plurality of QCL source reference signals, wherein the predicted measurement is for the at least one prediction target of the plurality of prediction targets corresponding to the at least one QCL source reference signal.
[0144] Aspect 2: The method of aspect 1, further comprising: receiving a second indication that respective prediction targets of the plurality of prediction targets are QCLed with respective measurement resources of the one or more measurement resources.
[0145] Aspect 3: The method of aspect 2, further comprising: receiving a third indication that the respective prediction targets share a same spatial transmission filter.
[0146] Aspect 4: The method of aspect 3, wherein the plurality of prediction targets are each associated with a different QCL source reference signal, and the measurement prediction report is for one prediction target per reporting occasion.
[0147] Aspect 5: The method of any of aspects 1 through 4, further comprising: receiving, in conjunction with the one or more measurement resources, a second indication of one or more candidate QCL source reference signals that correspond to a prediction target of the plurality of prediction targets.
[0148] Aspect 6: The method of aspect 5, further comprising: transmitting, via the measurement prediction report, a corresponding predicted measurement of the prediction target and information corresponding to the one or more candidate QCL source reference signals.
[0149] Aspect 7: The method of any of aspects 1 through 6, further comprising: receiving a second indication of a prediction target of the plurality of prediction targets that corresponds to all measurement resources of the one or more measurement resources.
[0150] Aspect 8: The method of aspect 7, wherein the measurement prediction report comprises a QCL source reference signal corresponding to the prediction target.
[0151] Aspect 9: The method of any of aspects 7 through 8, further comprising: receiving a message indicating the prediction target.
[0152] Aspect 10: The method of any of aspects 1 through 9, wherein a payload size of the measurement prediction report is fixed.
[0153] Aspect 11: The method of any of aspects 1 through 10, wherein a payload size of the measurement prediction report is based at least in part on a quantity of the plurality of QCL source reference signals.
[0154] Aspect 12: The method of any of aspects 1 through 11, wherein the measurement prediction report comprises respective identifiers of the at least one prediction target.
[0155] Aspect 13: The method of aspect 12, wherein the measurement prediction report comprises a respective QCL source reference signal of the plurality of QCL source reference signals for the at least one prediction target.
[0156] Aspect 14: The method of any of aspects 12 through 13, further comprising: transmitting, via the measurement prediction report, the predicted measurement corresponding to a single QCL source reference signal of the plurality of QCL source reference signals without a UE preference for a given QCL source reference signal of the plurality of QCL source reference signals.
[0157] Aspect 15: The method of any of aspects 1 through 14, wherein the measurement prediction report is transmitted based at least in part on the plurality of prediction targets being aperiodic channel state information reference signals.
[0158] Aspect 16: The method of any of aspects 1 through 15, wherein the measurement prediction report is transmitted based at least in part on QCL Type D being applied for the plurality of QCL source reference signals .
[0159] Aspect 17: The method of any of aspects 1 through 16, further comprising: configuring one or more beams based at least in part on the measurement prediction report, wherein the one or more beams share a same spatial transmission filter with the plurality of QCL source reference signals.
[0160] Aspect 18: A UE for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 1 through 17.
[0161] Aspect 19: A UE for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 17.
[0162] Aspect 20: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 1 through 17.
[0163] 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.
[0164] 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.
[0165] 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.
[0166] 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.
[0167] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0168] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0169] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”
[0170] 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. ”
[0171] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database, or another data structure) , ascertaining, and the like. Also, “determining” can include receiving (e.g., receiving information) , accessing (e.g., accessing data stored in memory) , and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.
[0172] 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.
[0173] 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.
[0174] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment (UE) , comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:receive one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a plurality of prediction targets for the UE, a plurality of quasi co-located (QCL) source reference signals for at least one prediction target of the plurality of prediction targets, and one or more measurement resources for the UE;perform a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the plurality of prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters; andtransmit the measurement prediction report comprising a predicted measurement of the one or more predicted measurements and comprising an indication of at least one QCL source reference signal of the plurality of QCL source reference signals, wherein the predicted measurement is for the at least one prediction target of the plurality of prediction targets corresponding to the at least one QCL source reference signal.2.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a second indication that respective prediction targets of the plurality of prediction targets are QCLed with respective measurement resources of the one or more measurement resources.3.The UE of claim 2, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a third indication that the respective prediction targets share a same spatial transmission filter.4.The UE of claim 3, wherein:the plurality of prediction targets are each associated with a different QCL source reference signal, andthe measurement prediction report is for one prediction target per reporting occasion.5.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive, in conjunction with the one or more measurement resources, a second indication of one or more candidate QCL source reference signals that correspond to a prediction target of the plurality of prediction targets.6.The UE of claim 5, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:transmit, via the measurement prediction report, a corresponding predicted measurement of the prediction target and information corresponding to the one or more candidate QCL source reference signals.7.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a second indication of a prediction target of the plurality of prediction targets that corresponds to all measurement resources of the one or more measurement resources.8.The UE of claim 7, wherein the measurement prediction report comprises a QCL source reference signal corresponding to the prediction target.9.The UE of claim 7, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a message indicating the prediction target.10.The UE of claim 1, wherein:a payload size of the measurement prediction report is fixed.11.The UE of claim 1, wherein a payload size of the measurement prediction report is based at least in part on a quantity of the plurality of QCL source reference signals.12.The UE of claim 1, wherein the measurement prediction report comprises respective identifiers of the at least one prediction target.13.The UE of claim 12, wherein the measurement prediction report comprises a respective QCL source reference signal of the plurality of QCL source reference signals for the at least one prediction target.14.The UE of claim 12, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:transmit, via the measurement prediction report, the predicted measurement corresponding to a single QCL source reference signal of the plurality of QCL source reference signals without a UE preference for a given QCL source reference signal of the plurality of QCL source reference signals.15.The UE of claim 1, wherein the measurement prediction report is transmitted based at least in part on the plurality of prediction targets being aperiodic channel state information reference signals.16.The UE of claim 1, wherein the measurement prediction report is transmitted based at least in part on QCL Type D being applied for the plurality of QCL source reference signals.17.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:configure one or more beams based at least in part on the measurement prediction report, wherein the one or more beams share a same spatial transmission filter with the plurality of QCL source reference signals.18.A method for wireless communications at a user equipment (UE) , comprising:receiving one or more reporting configuration messages for a measurement prediction report for the UE, the one or more reporting configuration messages indicating one or more prediction parameters for a plurality of prediction targets for the UE, a plurality of quasi co-located (QCL) source reference signals for at least one prediction target of the plurality of prediction targets, and one or more measurement resources for the UE;performing a measurement prediction procedure using one or more measurements associated with the one or more measurement resources to obtain one or more predicted measurements for the plurality of prediction targets for the UE, the one or more predicted measurements in accordance with the one or more prediction parameters; andtransmitting the measurement prediction report comprising a predicted measurement of the one or more predicted measurements and comprising an indication of at least one QCL source reference signal of the plurality of QCL source reference signals, wherein the predicted measurement is for the at least one prediction target of the plurality of prediction targets corresponding to the at least one QCL source reference signal.19.The method of claim 18, further comprising:receiving a second indication that respective prediction targets of the plurality of prediction targets are QCLed with respective measurement resources of the one or more measurement resources.20.The method of claim 19, further comprising:receiving a third indication that the respective prediction targets share a same spatial transmission filter, wherein:the plurality of prediction targets are each associated with a different QCL source reference signal, andthe measurement prediction report is for one prediction target per reporting occasion.
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