Channel state feedback for receive beam hypothesis

Abstract

Certain aspects of the present disclosure provide techniques for channel state feedback for receive beam hypotheses. An example method for wireless communication by an apparatus includes receiving an indication to provide feedback to a network entity, the feedback including channel characteristic information for one or more communication resources including the communication resources; and transmitting a report comprising, for each of the plurality of receive beam hypotheses, an indication of a corresponding determined channel characteristic of the communication resource.

Description

[0001] introduction Technical Field

[0002] Various aspects of this disclosure relate to wireless communication, and more specifically to techniques for beam management.

[0003] Related technical descriptions Wireless communication systems are widely deployed to provide a variety of telecommunications services, such as telephone, video, data, messaging, broadcasting, or other similar services. These wireless communication systems may employ multiple access technologies that enable communication with several users by sharing available wireless communication system resources.

[0004] Despite significant technological advancements in wireless communication systems over the years, challenges remain. For example, complex and dynamic environments can still attenuate or block signals between wireless transmitters and receivers. Therefore, there is a continuous expectation for improvements in the technical performance of wireless communication systems, including, for example: improving communication speed and data carrying capacity; improving the efficiency of shared communication media; reducing the power used by transmitters and receivers during communication; improving the reliability of wireless communication; avoiding redundant transmission and / or reception and related processing; improving the coverage area of ​​wireless communication; increasing the number and types of devices that can access the wireless communication system; increasing the ability of different types of devices to communicate with each other; and increasing the number and types of available wireless communication media. Therefore, there is a need for further improvements to wireless communication systems to overcome the aforementioned technical challenges and other obstacles. Summary of the Invention

[0005] One aspect provides a method for wireless communication by an apparatus. The method includes: receiving an indication to provide feedback to a network entity, the feedback including channel characteristic information for one or more communication resources including communication resources; and transmitting a report including an indication of corresponding determined channel characteristics for each of a plurality of receive beam assumptions for the communication resources.

[0006] Another aspect provides a method for wireless communication by a device. The method includes: transmitting an indication to the device to provide feedback, the feedback including channel characteristic information for one or more communication resources including communication resources; and obtaining a report including an indication of corresponding determined channel characteristics for each of a plurality of receive beam assumptions for that communication resource.

[0007] Other aspects provide: one or more means operable to, configured to, or otherwise adapted to perform any portion of any method described herein (e.g., such that performance can be implemented by only one means or in a distributed manner across multiple means); one or more non-transitory computer-readable media comprising instructions that, when executed by one or more processors of the one or more means, cause the one or more means to perform any portion of any method described herein (e.g., such that instructions can be included in only one computer-readable medium or in a distributed manner across multiple computer-readable media, such that instructions can be executed by only one processor or by multiple processors in a distributed manner, such that the one or more means can perform any portion of any method described herein). Each device in the apparatus may include one or more processors, and / or enable execution to be performed by only one device or in a distributed manner across multiple devices; one or more computer program products embodied on one or more computer-readable storage media including code for performing any part of any method described herein (e.g., enabling the code to be stored in only one computer-readable medium or in a distributed manner across computer-readable media); and / or one or more devices including one or more components for performing any part of any method described herein (e.g., enabling execution to be performed by only one device or by multiple devices in a distributed manner). By way of example, an apparatus may include a processing system, a device having a processing system, or a processing system cooperating via one or more networks.

[0008] For illustrative purposes, the following description and figures illustrate certain features. Attached Figure Description

[0009] The accompanying drawings depict certain features of the various aspects described herein and should not be considered as limiting the scope of this disclosure.

[0010] Figure 1 An example wireless communication network is depicted.

[0011] Figure 2 An example decomposed base station architecture is described.

[0012] Figure 3 Various aspects of the example base station and example user equipment (UE) are described.

[0013] Figure 4A , Figure 4B , Figure 4C and Figure 4D Various example aspects of data structures used in wireless communication networks are described.

[0014] Figure 5 This is a diagram depicting an example of Radio Resource Control (RRC) connection establishment and beam management.

[0015] Figure 6 This is a diagram illustrating an example of the beam management process.

[0016] Figure 7 Example receive beams and their corresponding active antenna elements are illustrated.

[0017] Figure 8 An example channel state feedback is described for communication resources and corresponding receive beam assumptions.

[0018] Figure 9 This is a diagram illustrating an example of channel characteristic prediction performed by the UE.

[0019] Figure 10 This is a bar chart illustrating example channel characteristic values ​​corresponding to different receive beam assumptions, which are related to various limits assigned to the corresponding receive beam assumptions for reporting channel state feedback on the same communication resources.

[0020] Figure 11A , Figure 11B , Figure 12A , Figure 12B and Figure 13 Schematic diagrams of example differential quantization schemes for channel characteristics across various communication resource-receive beam assumption pairs are presented.

[0021] Figure 14 This is a diagram illustrating an example relationship between Channel State Feedback and Transmit Configuration Indicator (TCI) status.

[0022] Figure 15 The process flow for communication between network entities and UEs in the network is described.

[0023] Figure 16 A method for wireless communication is described.

[0024] Figure 17 Another method for wireless communication is described.

[0025] Figure 18 Various aspects of the example communication device are described.

[0026] Figure 19 Various aspects of the example communication device are described. Detailed Implementation

[0027] This disclosure provides apparatus, methods, processing systems, and computer-readable media for channel state feedback based on receive beam assumptions.

[0028] Certain wireless communication systems (e.g., 5G New Radio (NR) systems and / or future wireless communication systems) can use beamforming for directional signal transmission and / or reception to facilitate efficient and reliable wireless communication. As an example, beamforming can apply various amplitude-weighted and / or phase-shift modes across multiple antennas to focus the transmission or reception of wireless signals on a specific spatial orientation (e.g., azimuth and / or elevation) and / or beamwidth that typically defines the beam. Specifically, efficient and reliable communication can be achieved through various beam management techniques such as beamforming, beam selection (e.g., the process of selecting a beam for wireless communication), beam fault detection (e.g., the process of detecting when communication via a beam does not meet quality or reliability specifications (such as a specific data error rate)), and beam fault recovery (e.g., the process of selecting an alternative beam when a beam fault is detected in a specific beam used for communication). Such beam management techniques are crucial for achieving the high data rates, low latency, and / or high reliability promised by successive generations of wireless technologies.

[0029] Technical challenges in beam management include, for example, the power consumption at the user equipment (UE) for monitoring the beam and the latency associated with the monitored beam at the UE. The UE may consume power to monitor channel characteristics associated with the beam for beam selection and / or beam fault detection. As an example, performing receive beamforming for a narrow receive beam may consume more power than performing receive beamforming for a wide receive beam. Generally, a UE can use different numbers of antenna elements to form receive beams of different widths. For example, a UE can use relatively few antenna elements (e.g., a single antenna element) to form a wide receive beam, while a UE can use relatively many antenna elements (e.g., two or four antenna elements) to form a narrow receive beam. For a narrow receive beam, activating more antenna elements for receive beamforming consumes more power at the UE compared to beamforming performed for a wide receive beam, for example, due to associated phase shifts and / or amplitude weights applied to active antenna elements. Furthermore, the UE may spend time scanning various beams to monitor channel conditions associated with the beam for beam selection and beam fault recovery. The time used for beam scanning can be equated to the increased latency associated with beam management techniques.

[0030] Some wireless communication systems (e.g., 5G NR systems) may not consider receive beamforming used for wireless communication at the UE. For example, these systems may anticipate the UE selecting receive beamforming for wireless communication without providing any feedback to the radio access network (RAN) regarding the UE's receive beamforming selection. Furthermore, the RAN may not have any feedback regarding candidate receive beams observed at the UE. This open-loop relationship between the receive beam used at the UE and beam management techniques can lead to increased power consumption at the UE and / or increased latency in wireless communication between the UE and the RAN. Moreover, under the assumption that a narrower receive beam maximizes the performance of the communication link between the UE and the RAN, the UE may tend to select a narrower receive beam. However, in some cases, a wide receive beam may be sufficient to meet the performance specifications or expectations of the communication link between the UE and the RAN.

[0031] The aspects of this disclosure provide technical solutions to the aforementioned technical problems through techniques for channel state feedback for receive beam assumptions. As an example, the UE can measure the signal received using a wide receive beam corresponding to a receive beam assumption, and the UE can report to the RAN channel characteristics (e.g., channel quality indicators (CQI)) associated with multiple receive beam assumptions (e.g., corresponding to the wide receive beam and other narrower receive beams). A receive beam assumption can be or include one or more parameters for beamforming the receive beam and / or one or more characteristics of the receive beam, such as the beamwidth and / or spatial orientation (e.g., azimuth and / or elevation) of the receive beam. This document further describes various aspects associated with channel state feedback for receive beam assumptions, such as reported measured or artificial intelligence (AI) predicted channel characteristics, RAN requests for a certain number of receive beam assumptions and / or channel characteristics for a specific receive beam assumption (e.g., different beamwidths and / or spatial orientations), value limits for the reported channel characteristics, differential quantization, various types of signaling for triggering and / or configuring channel state feedback for receive beam assumptions, and RAN requests to use a specific receive beam assumption for communication at the UE.

[0032] The technical solutions described herein offer various beneficial effects and / or advantages. The techniques described herein for channel state feedback for receive beam assumptions can improve wireless communication performance, including, for example, increased throughput, reduced latency, and reduced power consumption at the UE and / or network entity. For example, improved wireless communication performance can be attributed to the channel state feedback indicating a specific receive beam that provides optimal channel conditions compared to other receive beams. The UE and / or RAN can select the receive beam for wireless communication between the UE and the RAN. As another example, the UE can use a receive beam assumption corresponding to a wide receive beam to monitor a reference signal and predict channel characteristics associated with a narrow receive beam, thereby reducing power consumption at the UE. Additional and / or alternative benefits related to various aspects of channel state feedback for receive beam assumptions are further described herein.

[0033] As discussed herein, references to the RAN performing certain operations may refer to one or more network entities (e.g., base stations, non-terrestrial networks, and / or one or more decomposed entities thereof) performing the operations.

[0034] In this disclosure, the term "beam" can be used in a variety of contexts. A beam can be used to refer to a set of gains and / or phases (e.g., pre-decoding weights or common-phase weights) applied to (or associated with) an antenna element in a wireless communication device for transmission or reception. The term "beam" can also refer to an antenna or radiation pattern of a signal transmitted when gain and / or phase are applied to the antenna element. Other references to a beam may include one or more attributes or parameters associated with the antenna (radiation) pattern, such as angle of arrival (AoA), angle of departure (AoD), gain, phase, directivity, beamwidth, beam direction (relative to a reference plane) according to azimuth and / or elevation angles, peak-to-sidelobe ratio, or antenna ports associated with the antenna (radiation) pattern. The term "beam" can also refer to the associated number and / or arrangement of antenna elements (e.g., a uniform linear array, a uniform rectangular array, or other uniform array). A wide beam can be referred to as such because it can cover a wider spatial area than a narrow beam (e.g., a wider beam shape, radiation pattern, or beam size). Therefore, the terms wide beam and narrow beam can be used relative to each other.

[0035] An introduction to wireless communication networks The techniques and methods described herein can be used in a variety of wireless communication networks. Although aspects herein may be described using terms commonly associated with 3G, 4G, 5G, 6G, and / or other generations of wireless technologies, aspects of this disclosure are equally applicable to other communication systems and standards not explicitly mentioned herein.

[0036] Figure 1An example of a wireless communication network 100 in which the aspects described herein can be implemented is depicted.

[0037] Generally, wireless communication network 100 includes various network entities (alternatively, network elements or network nodes). Network entities are typically communication devices and / or communication functions performed by communication devices (e.g., user equipment (UE), base station (BS), components of a BS, servers, etc.). Because such communication devices are part of wireless communication network 100 and facilitate wireless communication, they may be referred to as wireless communication devices. For example, various functions of the network and various devices associated with and interacting with the network may be considered network entities. Furthermore, wireless communication network 100 includes terrestrial and non-terrestrial aspects (also referred to herein as non-terrestrial network entities). Terrestrial aspects include ground-based network entities (e.g., BS 102), and non-terrestrial aspects include satellite 140 and aircraft 145. These non-terrestrial aspects may include airborne network entities (e.g., one or more BSs) capable of communicating with other network elements (e.g., terrestrial BSs) and UEs.

[0038] In the depicted example, wireless communication network 100 includes BS 102, UE 104 and one or more core networks (such as Evolved Packet Core (EPC) 160 and 5G Core (5GC) network 190) that interoperate to provide communication services over various communication links, including wired and wireless links.

[0039] Figure 1 Various example UEs 104 are described, which may more generally include: cellular phones, smartphones, Session Initiation Protocol (SIP) phones, laptops, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players, cameras, game consoles, tablets, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, Internet of Things (IoT) devices, always-on (AON) devices, edge processing devices, data centers, or other similar devices. UE 104 may also be more generally referred to as mobile devices, wireless devices, stations, mobile stations, subscriber stations, mobile subscriber stations, mobile units, subscriber units, wireless units, remote units, remote devices, access terminals, mobile terminals, wireless terminals, remote terminals, mobile phones, and others.

[0040] BS 102 communicates wirelessly with UE 104 via communication link 120 (e.g., sending or receiving signals to or from UE 104). Communication link 120 between BS 102 and UE 104 may include uplink (UL) transmission (also referred to as reverse link) from UE 104 to BS 102 and / or downlink (DL) transmission (also referred to as forward link) transmission from BS 102 to UE 104. In various aspects, communication link 120 may utilize multiple-input multiple-output (MIMO) antenna technologies, including spatial multiplexing, beamforming, and / or transmit diversity.

[0041] BS 102 may typically include: NodeB, enhanced NodeB (eNB), next-generation enhanced NodeB (ng-eNB), next-generation NodeB (gNB or gNodeB), access point, transceiver base station, radio base station, radio transceiver, transceiver functionality, transmit / receive point, and / or others. Each of BS 102 provides communication coverage for a corresponding coverage area 110, which may sometimes be referred to as a cell, and in some cases may overlap (e.g., a small cell 102' may have a coverage area 110' that overlaps with the coverage area 110 of a macro cell). For example, BS may provide communication coverage for macro cells (covering a relatively large geographic area), pico cells (covering a relatively small geographic area, such as a stadium), femtocells (covering a relatively small geographic area (e.g., a home)), and / or other types of cells.

[0042] Generally, a cell can refer to a portion, partition, or segment of wireless communication coverage served by network entities within a wireless communication network. A cell can have geographical characteristics (such as a geographical coverage area) and radio frequency characteristics (such as time and / or frequency resources dedicated to the cell). For example, multiple cells employing different frequency resources (e.g., bandwidth portions) and / or different time resources can cover a specific geographical coverage area. As another example, a single cell can cover a specific geographical coverage area. In some contexts (e.g., carrier aggregation scenarios and / or multi-connectivity scenarios), the terms "cell" or "serving cell" can refer to or correspond to a specific carrier frequency (e.g., component carrier) used for wireless communication, and "cell group" can refer to or correspond to multiple carriers used for wireless communication. As an example, in a carrier aggregation scenario, a UE can communicate on multiple component carriers corresponding to multiple (serving) cells in the same cell group, and in a multi-connectivity (e.g., dual-connectivity) scenario, a UE can communicate on multiple component carriers corresponding to multiple cell groups.

[0043] Although BS 102 is described as a single communication device in various aspects, it can be implemented in a variety of configurations. For example, to give a few examples, one or more components of the base station can be decomposed, including a central unit (CU), one or more distributed units (DU), one or more radio units (RU), a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC. In another example, various aspects of the base station can be virtualized. More generally, a base station (e.g., BS 102) can include components located at a single physical location or components located at various physical locations. In examples where the base station includes components located at various physical locations, the various components can each perform functions, such that the various components collectively achieve functionality similar to a base station located at a single physical location. In some aspects, a base station including components located at various physical locations can be referred to as a decomposed radio access network architecture (such as an open RAN (O-RAN) or virtualized RAN (VRAN) architecture). Figure 2 An example decomposed base station architecture is depicted and described.

[0044] Different BSs 102 within the wireless communication network 100 can also be configured to support different radio access technologies (such as 3G, 4G, and / or 5G). For example, a BS 102 configured for 4G LTE (collectively referred to as Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) can interface with EPC 160 via a first backhaul link 132 (e.g., S1 interface). A BS 102 configured for 5G (e.g., 5G NR or Next Generation RAN (NG-RAN)) can interface with 5GC 190 via a second backhaul link 184. BSs 102 can communicate directly or indirectly (e.g., via EPC 160 or 5GC 190) on a third backhaul link 134 (e.g., X2 interface), which can be wired or wireless.

[0045] Wireless communication network 100 can subdivide the electromagnetic spectrum into various categories, bands, channels, or other characteristics. In some aspects, subdivision is provided based on wavelength and frequency, where frequency may also be referred to as carrier, subcarrier, channel, tone, or subband. For example, 3GPP currently defines frequency range 1 (FR1) as including 410MHz to 7125MHz, which is often (interchangeably) referred to as “sub-6GHz”. Similarly, 3GPP currently defines frequency range 2 (FR2) as including 24,250MHz to 71,000MHz, which is sometimes (interchangeably) referred to as “millimeter wave” (“mmW” or “mmWave”). In some cases, FR2 can be further defined according to subranges (such as a first subrange FR2-1 including 24,250MHz to 52,600MHz and a second subrange FR2-2 including 52,600MHz to 71,000MHz). Base stations configured to communicate using mmWave / near mmWave radio bands (e.g., mmWave base stations such as BS 180) can utilize beamforming (e.g., 182) with UEs (e.g., 104) to improve path loss and range.

[0046] The communication link 120 between BS 102 and, for example, UE 104 can be via one or more carriers, which may have different bandwidths (e.g., 5MHz, 10MHz, 15MHz, 20MHz, 100MHz, 400MHz and / or other MHz) and may be aggregated in various ways. The carriers may be adjacent to each other or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated to DL compared to UL).

[0047] Compared to lower-frequency communication, communication using higher frequency bands may have higher path loss and shorter range. Therefore, some base stations (e.g., Figure 1The beamforming 182 of the BS 180 (180) with the UE 104 can be used to improve path loss and range. For example, the BS 180 and UE 104 may each include multiple antennas, such as antenna elements, antenna panels, and / or antenna arrays, to facilitate beamforming. In some cases, the BS 180 may transmit beamformed signals to the UE 104 in one or more transmit directions 182''. The UE 104 may receive beamformed signals from the BS 180 in one or more receive directions 182''. The UE 104 may also transmit beamformed signals to the BS 180 in one or more transmit directions 182''. The BS 180 may also receive beamformed signals from the UE 104 in one or more receive directions 182''. The BS 180 and UE 104 may then perform beamforming training to determine the optimal receive and transmit directions for each of the BS 180 and UE 104. It is worth noting that the transmit and receive directions of the BS 180 may be the same or different. Similarly, the sending and receiving directions of UE 104 may be the same or different.

[0048] The wireless communication network 100 further includes a Wi-Fi AP 150 that communicates with a Wi-Fi station (STA) 152 via a communication link 154 in, for example, unlicensed spectrum in 2.4 GHz and / or 5 GHz.

[0049] Some UEs 104 may use device-to-device (D2D) communication link 158 to communicate with each other. The D2D communication link 158 may use one or more sidelink channels, such as physical sidelink broadcast channel (PSBCH), physical sidelink discovery channel (PSDCH), physical sidelink shared channel (PSSCH), physical sidelink control channel (PSCCH), and / or physical sidelink feedback channel (PSFCH).

[0050] EPC 160 may include various functional components, including: Mobility Management Entity (MME) 162, other MMEs 164, Serving Gateway 166, Multimedia Broadcast Multicast Service (MBMS) Gateway 168, Broadcast Multicast Service Center (BM-SC) 170, and / or Packet Data Network (PDN) Gateway 172, as in the illustrated example. MME 162 may communicate with Home Subscriber Server (HSS) 174. MME 162 is the control node that handles signaling between UE 104 and EPC 160. Generally, MME 162 provides bearer and connectivity management.

[0051] Generally, user Internet Protocol (IP) packets are transmitted through Serving Gateway 166, which is itself connected to PDN Gateway 172. PDN Gateway 172 provides UE IP address allocation and other functions. PDN Gateway 172 and BM-SC 170 are connected to IP services 176, which may include, for example, the Internet, intranets, IP Multimedia Subsystem (IMS), packet-switched (PS) streaming services, and / or other IP services.

[0052] The BM-SC 170 provides functionality for MBMS user service dispatch and delivery. The BM-SC 170 can serve as an entry point for content provider MBMS transmissions, authorize and initiate MBMS bearer services within a Public Land Mobile Network (PLMN), and / or schedule MBMS transmissions. The MBMS Gateway 168 can distribute MBMS services to BS 102 within a Broadcast-Specific Service Single Frequency Network (MBSFN) area, and / or be responsible for session management (start / stop) and collecting eMBMS-related billing information.

[0053] 5GC 190 may include various functional components, including: Access and Mobility Management Function (AMF) 192, other AMFs 193, Session Management Function (SMF) 194, and User Plane Function (UPF) 195. AMF 192 may communicate with Unified Data Management (UDM) 196.

[0054] AMF 192 is the control node that handles signaling between UE 104 and 5GC 190. AMF 192 provides services such as Quality of Service (QoS) flow and session management.

[0055] Internet Protocol (IP) packets are transmitted via UPF 195, which connects to IP service 197 and provides UE IP address allocation and other functions for 5GC 190. IP service 197 may include, for example, the Internet, intranet, IMS, PS streaming service, and / or other IP services.

[0056] In various aspects, to give a few examples, network entities or network nodes can be implemented as aggregated base stations, decomposed base stations, components of base stations, integrated access and backhaul (IAB) nodes, relay nodes, and sidelink nodes.

[0057] Figure 2An example decomposed base station 200 architecture is depicted. The decomposed base station 200 architecture may include one or more central units (CUs) 210, which may communicate directly with the core network 220 via a backhaul link, or indirectly with the core network 220 through one or more decomposed base station units, such as a near real-time (near-RT) RAN Intelligent Controller (RIC) 225 via an E2 link, or a non-real-time (non-RT) RIC 215 associated with a Service Management and Orchestration (SMO) framework 205, or both. CUs 210 may communicate with one or more distributed units (DUs) 230 via corresponding midhaul links (such as F1 interfaces). DUs 230 may communicate with one or more radio units (RUs) 240 via corresponding fronthaul links. RUs 240 may communicate with a corresponding UE 104 via one or more radio frequency (RF) access links. In some specific implementations, UE 104 may be served simultaneously by multiple RUs 240.

[0058] Each unit in a cell (e.g., CU 210, DU 230, RU 240, and near-RT RIC 225, non-RT RIC 215, and SMO frame 205) may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the cells, or an associated processor or controller that provides instructions to the cell's communication interface, may be configured to communicate with one or more other cells via the transmission medium. For example, these cells may include a wired interface configured to receive signals or transmit signals to one or more other cells via a wired transmission medium. Additionally or alternatively, a cell may include a wireless interface that may include a receiver, transmitter, or transceiver (such as a radio frequency (RF) transceiver) configured to receive signals on a wireless transmission medium or transmit signals to one or more other cells, or both.

[0059] In some aspects, CU 210 can host one or more higher-level control functions. Such control functions may include Radio Resource Control (RRC), Packet Data Convergence Protocol (PDCP), Serving Data Adaptation Protocol (SDAP), etc. Each control function can be implemented using an interface configured to signal to other control functions hosted by CU 210. CU 210 can be configured to handle user plane functions (e.g., Central Unit-User Plane (CU-UP)), control plane functions (e.g., Central Unit-Control Plane (CU-CP)), or combinations thereof. In some implementations, CU 210 can be logically divided into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, CU-UP units can communicate bidirectionally with CU-CP units via an interface such as an E1 interface. CU 210 can be implemented to communicate with DU 230 for network control and signaling, as needed.

[0060] DU 230 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RU 240s. In some aspects, DU 230 may at least partially host one or more of the Radio Link Control (RLC) layer, Medium Access Control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.) according to functional splits (such as those defined by the 3rd Generation Partnership Project (3GPP). In some aspects, DU 230 may further host one or more low PHY layers. Each layer (or module) may be implemented using an interface configured to communicate signals with other layers (and modules) hosted by DU 230 or with control functions hosted by CU 210.

[0061] Lower-layer functionality can be implemented by one or more RU 240s. In some deployments, the RU240 controlled by the DU 230 may correspond to a logical node that hosts RF processing functions or low-PHY layer functions (such as performing Fast Fourier Transform (FFT), Inverse FFT (iFFT), digital beamforming, Physical Random Access Channel (PRACH) extraction and filtering, or both, based at least in part on functional decomposition (such as lower-layer functional decomposition). In such architectures, the RU 240 may be implemented to handle over-the-air (OTA) communications with one or more UE 104s. In some specific implementations, the real-time and non-real-time aspects of control plane and user plane communications with the RU 240 may be controlled by the corresponding DU 230. In some scenarios, this configuration allows the DU 230 and CU 210 to be implemented in cloud-based RAN architectures such as vRAN architectures.

[0062] SMO framework 205 can be configured to support RAN deployment and provisioning of both non-virtualized and virtualized network elements. For non-virtualized network elements, SMO framework 205 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which can be managed via operation and maintenance interfaces such as the O1 interface. For virtualized network elements, SMO framework 205 can be configured to interact with cloud computing platforms such as Open Cloud (O-Cloud) 290 to perform network element lifecycle management (such as instantiating virtualized network elements) via cloud computing platform interfaces such as the O2 interface. Such virtualized network elements may include, but are not limited to, CU 210, DU 230, RU 240, and near-RT RIC 225. In some specific implementations, SMO framework 205 may communicate with hardware aspects of the 4G RAN, such as Open eNB (O-eNB) 211, via the O1 interface. Additionally, in some implementations, the SMO framework 205 may communicate directly with one or more DU 230s and / or one or more RU 240s via the O1 interface. The SMO framework 205 may also include a non-RT RIC 215 configured to support the functionality of the SMO framework 205.

[0063] The non-RT RIC 215 can be configured to include logical functions that enable non-real-time control and optimization of RAN elements and resources, including artificial intelligence / machine learning (AI / ML) workflows for model training and updates, or policy-based guidance for applications / features in the near-RT RIC 225. The non-RT RIC 215 can be coupled to or communicate with the near-RT RIC 225, such as via an A1 interface. The near-RT RIC 225 can be configured to include logical functions that enable near real-time control and optimization of RAN elements and resources via an interface, such as an E2 interface, through data collection and actions, connecting one or more CU 210s, one or more DU 230s, or both, and O-eNBs to the near-RT RIC 225.

[0064] In some implementations, to generate AI / ML models to be deployed in the near-RT RIC 225, the non-RT RIC 215 may receive parameters or external enrichment information from an external server. This information can be utilized by the near-RT RIC 225 and may be received from non-network data sources or network functions at the SMO framework 205 or the non-RT RIC 215. In some examples, the non-RT RIC 215 or the near-RT RIC 225 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 215 may monitor long-term trends and patterns in performance and employ AI / ML models to perform corrective actions via the SMO framework 205 (such as reconfiguration via O1) or by creating RAN management policies (such as A1 policies).

[0065] Figure 3 Various aspects of examples BS 102 and UE 104 are described.

[0066] Generally, BS 102 includes various processors (e.g., 318, 320, 330, 338, and 340), antennas 334a to 334t (collectively referred to as 334), transceivers 332a to 332t (collectively referred to as 332) including modulators and demodulators, and other aspects that enable the wireless transmission of data (e.g., data source 312) and the wireless reception of data (e.g., data sink 314). For example, BS 102 can transmit and receive data between BS 102 and UE 104. BS 102 includes a controller / processor 340 that can be configured to implement the various functions described herein related to wireless communication.

[0067] Generally, UE 104 includes various processors (e.g., 358, 364, 366, 370, and 380), antennas 352a to 352r (collectively referred to as 352), transceivers 354a to 354r (collectively referred to as 354) including modulators and demodulators, and other aspects that enable the wireless transmission of data (e.g., retrieval from data source 362) and the wireless reception of data (e.g., provision to data sink 360). UE 104 includes a controller / processor 380 that can be configured to implement the various wireless communication-related functions described herein.

[0068] Regarding example downlink transmission, BS 102 includes a transmission processor 320 that can receive data from data source 312 and control information from controller / processor 340. This control information may be for a Physical Broadcast Channel (PBCH), Physical Control Format Indicator Channel (PCFICH), Physical Hybrid Automatic Repeat Request (HARQ) Indicator Channel (PHICH), Physical Downlink Control Channel (PDCCH), Group Common PDCCH (GC PDCCH), and / or others. In some examples, this data may be for a Physical Downlink Shared Channel (PDSCH).

[0069] The transmitter processor 320 can process data and control information (e.g., encoding and symbol mapping) to obtain data symbols and control symbols, respectively. The transmitter processor 320 can also generate reference symbols (such as those for the primary synchronization signal (PSS), secondary synchronization signal (SSS), PBCH demodulation reference signal (DMRS), and channel state information reference signal (CSI-RS)).

[0070] The transmit (TX) multiple-input multiple-output (MIMO) processor 330 can perform spatial processing (e.g., pre-decoding) on ​​data symbols, control symbols, and / or reference symbols where applicable, and can provide the output symbol stream to the modulators (MODs) in transceivers 332a to 332t. Each modulator in transceivers 332a to 332t can process the corresponding output symbol stream to obtain an output sample stream. Each modulator can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signal from the modulators in transceivers 332a to 332t can be transmitted via antennas 334a to 334t, respectively.

[0071] To receive downlink transmissions, UE 104 includes antennas 352a to 352r that receive downlink signals from BS 102 and provide the received signals to demodulators (DEMODs) in transceivers 354a to 354r, respectively. Each demodulator in transceivers 354a to 354r can adjust (e.g., filter, amplify, down-convert, and digitize) the corresponding received signal to obtain an input sample. Each demodulator can further process the input sample to obtain the received symbols.

[0072] The RX MIMO detector 356 acquires received symbols from all demodulators in transceivers 354a to 354r, performs MIMO detection on the received symbols where applicable, and provides the detected symbols. The receive processor 358 processes the detected symbols (e.g., demodulation, deinterleaving, and decoding), provides the decoded data of UE 104 to data sink 360, and provides the decoded control information to controller / processor 380.

[0073] Regarding example uplink transmission, UE 104 also includes a transmit processor 364 that receives and processes data from data source 362 (e.g., for PUSCH) and control information from controller / processor 380 (e.g., for Physical Uplink Control Channel (PUCCH)). Transmit processor 364 may also generate reference symbols for reference signals (e.g., for Sounding Reference Signal (SRS)). Symbols from transmit processor 364 may be pre-decoded by TX MIMO processor 366 where applicable, further processed by modulators in transceivers 354a to 354r (e.g., for SC-FDM), and transmitted to BS 102.

[0074] At BS 102, uplink signals from UE 104 can be received by antennas 334a to 334t, processed by demodulators in transceivers 332a to 332t, detected where applicable by RX MIMO detector 336, and further processed by receiver processor 338 to obtain decoded data and control information transmitted by UE 104. Receiver processor 338 can provide the decoded data to data sink 314 and the decoded control information to controller / processor 340.

[0075] Memory 342 and memory 382 can store data and program code for BS 102 and UE 104, respectively.

[0076] Scheduler 344 can schedule UE to send data on the downlink and / or uplink.

[0077] In various respects, BS 102 can be described as transmitting and receiving various types of data associated with the methods described herein. In these contexts, “transmitting” can refer to various mechanisms that output data, such as from data source 312, scheduler 344, memory 342, transmit processor 320, controller / processor 340, TX MIMO processor 330, transceivers 332a to 332t, antennas 334a to 334t, and / or other aspects described herein. Similarly, “receiving” can refer to various mechanisms that acquire data, such as from antennas 334a to 334t, transceivers 332a to 332t, RX MIMO detector 336, controller / processor 340, receive processor 338, scheduler 344, memory 342, and / or other aspects described herein.

[0078] In various respects, UE 104 can also be described as transmitting and receiving various types of data associated with the methods described herein. In these contexts, “transmitting” can refer to various mechanisms that output data, such as from data source 362, memory 382, ​​transmit processor 364, controller / processor 380, TX MIMO processor 366, transceivers 354a to 354t, antennas 352a to 352t, and / or other aspects described herein. Similarly, “receiving” can refer to various mechanisms that acquire data, such as from antennas 352a to 352t, transceivers 354a to 354t, RX MIMO detector 356, controller / processor 380, receive processor 358, memory 382, ​​and / or other aspects described herein.

[0079] In some respects, the processor can be configured to perform various operations (such as those associated with the methods described herein) and to send (output) data to or receive data from another interface configured to send or receive data, respectively.

[0080] In various aspects, artificial intelligence (AI) processors 318 and 370 may perform AI processing for BS 102 and / or UE 104, respectively. AI processor 318 may include AI accelerator hardware or circuitry, such as one or more neural processing units (NPUs), one or more neural network processors, one or more tensor processors, one or more deep learning processors, etc. AI processor 370 may similarly include AI accelerator hardware or circuitry. As an example, AI processor 370 may perform AI-based beam management, AI-based channel state feedback (CSF), AI-based antenna tuning, and / or AI-based positioning (e.g., Global Navigation Satellite System (GNSS) positioning). In some cases, AI processor 318 may use hardware-accelerated AI inference and / or AI training to process feedback (e.g., CSF) from UE 104. AI processor 318 may, for example, use hardware-accelerated AI inference associated with the CSF to decode compressed CSF from UE 104. In some cases, AI processor 318 may perform certain RAN-based functions, including, for example, network planning, network performance management, energy-efficient network operation, etc.

[0081] Figure 4A , Figure 4B , Figure 4C and Figure 4D Describes the use of wireless communication networks (such as Figure 1 All aspects of the data structure of the wireless communication network 100.

[0082] Specifically, Figure 4A Figure 400 is an example of the first subframe within a 5G (e.g., 5G NR) frame structure. Figure 4B Figure 430 illustrates an example of a DL channel within a 5G subframe. Figure 4C Figure 450 illustrates an example of the second subframe within a 5G frame structure, and Figure 4D Figure 480 illustrates an example of a UL channel within a 5G subframe.

[0083] Wireless communication systems can utilize Orthogonal Frequency Division Multiplexing (OFDM) with a cyclic prefix (CP) on both the uplink and downlink. Such systems can also support half-duplex operation using Time Division Duplex (TDD). OFDM and Single-Carrier Frequency Division Multiplexing (SC-FDM) will (e.g., as...) Figure 4B and Figure 4D The system bandwidth (as depicted in the text) is divided into multiple orthogonal subcarriers. Each subcarrier can be modulated with data. Modulation symbols can be transmitted in the frequency domain using OFDM and / or in the time domain using SC-FDM.

[0084] Wireless communication frame structures can be frequency division duplex (FDD), where for a specific set of subcarriers, subframes within that set are dedicated to either deep (DL) or ultra-low (UL). Wireless communication frame structures can also be time division duplex (TDD), where for a specific set of subcarriers, subframes within that set are dedicated to both DL and UL.

[0085] exist Figure 4A and Figure 4C In this example, the wireless communication frame structure is TDD, where D stands for DL, U for UL, and X is flexibly used between DL and UL. The UE can configure the time slot format via the received Slot Format Indicator (SFI) (dynamically configured via DL Control Information (DCI) or semi-statically / statically configured via Radio Resource Control (RRC) signaling). In the depicted example, a 10ms frame is divided into 10 equal-sized 1ms subframes. Each subframe may include one or more time slots. In some examples, each time slot may include 12 or 14 symbols, depending on the Cyclic Prefix (CP) type (e.g., 12 symbols per time slot for extended CP, or 14 symbols per time slot for regular CP). Subframes may also include micro-slots, which typically have fewer symbols than the entire time slot. Other wireless communication technologies may have different frame structures and / or different channels.

[0086] In some respects, the number of time slots within a subframe (e.g., the time slot duration within a subframe) is based on a parameter set that defines the frequency-domain subcarrier spacing and symbol duration, as further described herein. In some respects, given a parameter set μ, each subframe has 2 μ The number of time slots is 1. Therefore, parameter sets (µ) 0 through 6 allow for 1, 2, 4, 8, 16, 32, and 64 time slots per subframe, respectively. In some cases, extended CP (e.g., 12 symbols per time slot) can be used with specific parameter sets; for example, parameter set 2 allows for 4 time slots per subframe. Subcarrier spacing and symbol length / duration are functions of the parameter set. The subcarrier spacing can be equal to... kHz, where μ is the parameter set from 0 to 6. As an example, the parameter set... Corresponding to a subcarrier spacing of 15 kHz, and the parameter set This corresponds to a subcarrier spacing of 960 kHz. Symbol length / duration is negatively correlated with subcarrier spacing. Figure 4A , Figure 4B , Figure 4C and Figure 4D It provides a slot format with 14 symbols per slot (e.g., regular CP) and a parameter set with 4 slots per subframe. Example. In this case, the slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs.

[0087] like Figure 4A , Figure 4B , Figure 4C and Figure 4D As depicted, the resource grid can be used to represent the frame structure. Each time slot includes a resource block (RB) (also known as a physical RB (PRB)) extending for, for example, 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme, including, for example, quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM).

[0088] like Figure 4A As illustrated in the example, some REs in the RE carry information for the UE (e.g., Figure 1 and Figure 3 The reference (pilot) signal (RS) for the UE (104) may include a demodulation RS (DMRS) and / or a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and / or a phase tracking RS (PT-RS).

[0089] Figure 4B Examples of various DL channels within a subframe of a frame are illustrated. The Physical Downlink Control Channel (PDCCH) carries the DCI within one or more Control Channel Elements (CCEs), each CCE comprising, for example, nine RE groups (REGs), each REG comprising, for example, four consecutive REs in an OFDM symbol.

[0090] The Primary Synchronization Signal (PSS) can be located within symbol 2 of a specific subframe of the frame. The PSS is generated by the UE (e.g., Figure 1 and Figure 3 104) is used to determine subframe / symbol timing and physical layer identifier.

[0091] The Secondary Synchronization Signal (SSS) can be located within symbol 4 of a specific subframe of a frame. The SSS is used by the UE to determine the physical layer cell identifier group number and radio frame timing.

[0092] Based on the Physical Layer Identifier and Physical Layer Cell Identifier Group Number, the UE can determine the Physical Cell Identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DMRS. The Physical Broadcast Channel (PBCH), carrying the Master Information Block (MIB), can be logically grouped with the PSS and SSS to form a Synchronization Signal (SS) / PBCH block. The MIB provides the number of RBs and the System Frame Number (SFN) in the system bandwidth. The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information (such as System Information Block (SIB)) not transmitted via the PBCH, and / or paging messages.

[0093] like Figure 4C As illustrated, some REs in the REs carry DMRS for channel estimation at the base station (indicated as R for a particular configuration, but other DMRS configurations are possible). The UE can transmit DMRS for PUCCH and DMRS for PUSCH. PUSCH DMRS can be transmitted, for example, in the first or second symbol before the PUSCH. PUCCH DMRS can be transmitted in different configurations depending on whether a short or long PUCCH is being transmitted and depending on the specific PUCCH format used. UE104 can transmit a Sounding Reference Signal (SRS). SRS can be transmitted, for example, in the last symbol of a subframe. SRS can have a comb structure, and the UE can transmit SRS on one of the comb teeth. SRS can be used by the base station for channel quality estimation to enable frequency-dependent scheduling of the UL.

[0094] Figure 4D Examples of various UL channels within a subframe of a frame are illustrated. The PUCCH can be located as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), pre-decoding matrix indicators (PMI), rank indicators (RI), and HARQ ACK / NACK feedback. The PUSCH carries data and may additionally be used to carry buffer status reports (BSR), power clearance reports (PHR), and / or UCI.

[0095] Aspects related to beam management Figure 5 This is a diagram depicting example Radio Resource Control (RRC) connection establishment and beam management 500. As shown, at box 502, the UE can initially be in an RRC idle state (or an RRC inactive state). The RRC idle state is a state in which the UE is powered on but does not have any established RRC connection to the RAN (e.g., an assigned communication link). The RRC idle state allows the UE to reduce battery power consumption, for example, compared to the RRC connected state. For example, in the RRC idle state, the UE can periodically monitor paging from the RAN. The UE can be in the RRC idle state when it has no data to send or receive. In the RRC connected state, the UE is connected to the RAN, and radio resources are allocated to the UE. In some cases, when in the RRC connected state, the UE is actively communicating with the RAN.

[0096] To perform data transfer and / or make / receive calls, at box 504, the UE uses an initial access procedure to establish a connection with the RAN. For example, the UE establishes a connection to a specific serving cell of the RAN. The initial access procedure is a series of procedures performed between the UE and the RAN to establish an RRC connection. For example, the UE may initiate a random access procedure that includes an RRC setup request or an RRC connection request. After the connection is established, the UE may be in an RRC connected state.

[0097] In some cases, the UE may perform beam management operations at block 506 in response to entering the RRC connected state. Beam management operations include a set of operations for determining certain receive and / or transmit beams that can be used for wireless communication (e.g., transmission and / or reception at the UE). Beam management may include certain P1, P2, and / or P3 beam management procedures further described herein.

[0098] The beam management process may also include beam fault detection operations at block 508 and beam fault recovery operations at block 510. For example, the UE may detect a beam fault when the Layer 1 (L1) reference signal received power (RSRP) of the connected beam drops below a certain limit (e.g., a limit corresponding to the block error rate (BER)). In response to detecting a beam fault at block 508, the UE identifies a candidate beam suitable for communication and performs beam fault recovery (BFR). For example, the UE may send a request to the RAN to switch to the candidate beam for communication. In some cases, the UE may use the candidate beam to send the beam switching request via a random access procedure. The RAN may activate the candidate beam or a different beam at the UE. If the BFR is unsuccessful, the UE may declare a radio link failure (RLF) for the serving cell at block 512. In response to the RLF, the UE may perform a cell reselection procedure to establish a communication link on a different serving cell.

[0099] Figure 6 These are illustrations of examples 600, 610, and 620 illustrating the beam management process. (See diagram 600.) Figure 6 As shown, Examples 600, 610, and 620 include UE 104 in a wireless network (e.g., Figure 1 It communicates with BS 102 in the wireless communication network 100. However, Figure 6 The device shown is provided as an example, and the wireless network can support communication and beam management between other devices, such as between UE 104 and network entities, between UE 104 and Transmit / Receive Point (TRP), between mobile terminal nodes and control nodes, between Integrated Access and Backhaul (IAB) child nodes and IAB parent nodes, between scheduled nodes and scheduling nodes, etc. In some respects, UE 104 and BS 102 are in a connected state (e.g., RRC connected state, etc.).

[0100] BS 102 and UE 104 can communicate to perform beam management using reference signals (RS) (e.g., synchronization (SSB), demodulation reference signal (DM-RS), channel state information reference signal (CSI-RS), etc.).

[0101] Example 600 depicts a first beam management procedure (e.g., such as a P1 CSI-RS beam management procedure). The first beam management procedure may be referred to as a beam selection procedure, an initial beam acquisition procedure, a beam scan procedure, a cell search procedure, a beam search procedure, and so on. In Example 600, a reference signal is configured to be transmitted from BS 102 to UE 104. The reference signal may be configured to be periodic (e.g., using RRC signaling), semi-persistent (e.g., using Media Access Control (MAC) Control Element (MAC-CE) signaling), and / or aperiodic (e.g., using Downlink Control Information (DCI)).

[0102] As illustrated, the first beam management procedure may include BS 102 performing beam scanning on multiple transmit (TX) beams 602. Transmit beams are beams used by wireless communication devices (e.g., BS 102 and / or UE 104) to transmit signals. For example, BS 102 may use each of the transmit beams 602 associated with BS 102 to transmit a reference signal for beam management. To enable UE 104 to perform receive (RX) beam scanning, BS 102 uses the transmit beams to transmit (e.g., using repetition) each reference signal multiple times within the same resource set, so that UE 104 can scan the receive beams 604 in multiple transmit instances. Receive beams are beams used by wireless communication devices to receive signals. For example, if BS 102 has... N A transmit beam set 602 and UE 104 has M If there are 604 receiving beam sets, then... N A reference signal is transmitted on each of the transmission beams 602. M This allows UE 104 to receive the reference signal for each transmitted beam. M For example, the first beam management procedure enables UE 104 to use different receive beams to measure reference signals on different transmit beams, supporting receive beam selection for transmit beams. UE 104 may report the measurements to BS 102 so that BS 102 can select one or more beam pairs for communication between BS 102 and UE 104, as further described herein with respect to channel state feedback corresponding to the receive beam assumption.

[0103] Figure 6Example 610 illustrated herein depicts a second beam management process (e.g., such as a P2 CSI-RS beam management process). The second beam management process may be referred to as a beam refinement process, a BS beam refinement process, a TRP beam refinement process, a transmit beam refinement process, etc.

[0104] As illustrated, the second beam management procedure includes BS 102 performing beam scanning on one or more transmit beams 612. The transmit beams 612 may be a subset of all transmit beams associated with BS 102 (e.g., determined at least in part based on measurements reported by UE 104 in conjunction with the first beam management procedure). BS 102 uses each of the transmit beams 612 to transmit a reference signal. UE 104 uses a single (e.g., identical) receive beam 614 to measure each reference signal (e.g., determined at least in part based on measurements performed in conjunction with the first beam management procedure). Therefore, the second beam management procedure enables BS 102 to select the optimal transmit beam based on measurements of the reference signal reported by UE 104 (e.g., measured by UE 104 using a single receive beam 614).

[0105] Figure 6 Example 620 illustrated herein depicts a third beam management process (e.g., such as a P3 CSI-RS beam management process). The third beam management process may be referred to as a beam refinement process, a UE beam refinement process, a receive beam refinement process, etc.

[0106] As illustrated, the third beam management process includes BS 102 using a single transmit beam 622 to transmit one or more reference signals (e.g., determined at least in part based on measurements reported by UE 104 in conjunction with the first and / or second beam management processes). To enable UE 104 to perform receive beam scanning, BS 102 may use the transmit beam to transmit (e.g., using repetition) the reference signals multiple times within the same resource set, allowing UE 104 to scan one or more receive beams 624 in multiple transmission instances. Receive beam 624 may be a subset of all receive beams associated with UE 104 (e.g., determined based on measurements performed in conjunction with the first and / or second beam management processes). The third beam management process helps enable BS 102 and / or UE 104 to select the optimal receive beam based on reported measurements received from UE 104 (e.g., reported measurements of the reference signals of the transmit beam received from the UE using one or more receive beams).

[0107] Figure 6This is provided as an example of a beam management process for determining the transmit and / or receive beams for wireless communication between a UE and a network entity. However, when determining the transmit and / or receive beams for wireless communication, consideration may be given to... Figure 6 Other examples of beam management processes described.

[0108] Aspects related to ML-assisted beam management process Artificial intelligence (AI), and more specifically machine learning (ML) techniques, have been introduced to help overcome the technical challenges associated with certain beam management processes as described above. ML, a subcategory of AI, refers to training computer algorithms to make predictions based on experience. ML is an efficient tool that can be used to help reduce the complexity involved in monitoring and selecting beams, as well as the overhead associated with beam management, without sacrificing system performance. For example, with the help of ML techniques, beam selection can be performed with reduced latency, reduced overhead (e.g., reduced signaling), and / or improved accuracy compared to certain exhaustive search methods.

[0109] In some respects, such as for spatial (SD), temporal (TD), and / or frequency (FD) beam prediction purposes, ML models are deployed in UEs (e.g., such as...). Figure 1 The ML model at or on the UE (e.g., UE 104) is used to predict the SD downlink beam for the A beam set based on measurements of the B beam set. TD refers to the analysis space where signals are transmitted according to time rather than frequency. FD refers to the analysis space where signals are transmitted according to frequency rather than time. The scenario where the ML model at or on the UE is used to predict the TD downlink beam for the A beam set based on historical measurements of the B beam set is called beam management scenario 2, or simply "BM scenario 2". Generally, ML can be used to predict characteristics associated with the A beam set, and the B beam set can be used as input data for ML for DL ​​beam measurements. For BM scenario 1 and BM scenario 2, the beams in the A and B beam sets can be in the same frequency range (e.g., FR1 and / or FR2). In some cases, the B beam set can be a subset of the A beam set. Any number of beams may exist in each of beam sets A and B. A quasi-co-location (QCL) relationship may exist between beam sets A and B.

[0110] Technical challenges in beam management include, for example, the power consumption at the user equipment (UE) for monitoring the beam and the latency at the UE associated with monitoring the beam for beam selection, beam failure detection, and / or beam failure recovery. The UE may consume power to monitor channel characteristics associated with the beam for beam selection and / or beam failure detection. As an example, performing receive beamforming for a narrow receive beam may consume more power than performing receive beamforming for a wide receive beam. Generally, a UE can use different numbers of antenna elements to form receive beams of different beamwidths. For example, a UE can use relatively few antenna elements (e.g., a single antenna element) to form a wide receive beam, while a UE can use relatively many antenna elements (e.g., two or four antenna elements) to form a narrow receive beam. For a narrow receive beam, activating more antenna elements for receive beamforming can consume more power at the UE than beamforming performed for a wide receive beam, for example, due to the associated phase shift and / or amplitude weighting applied to active antenna elements. In addition, the UE may spend time scanning various beams to monitor the channel conditions associated with the beam for beam selection and beam failure recovery. The time spent on beam scanning can be equated to the increased latency associated with beam management techniques.

[0111] like Figure 6 As illustrated, conventional beam selection methods, also known as exhaustive search, search each beam individually to find the transmitter-receiver combination that will yield the maximum value for a given criterion, such as transmitter / receiver channel gain. While exhaustive search methods help select suitable transmit / receive beam pairs, they become impractical due to (1) the search time increasing exponentially with the number of beams and / or radiation patterns, and (2) ultra-low latency requirements (e.g., the requirement to process very large numbers of data packets with very low latency tolerance), such as the expected latency of approximately 1µs to 10µs for some radio access technologies. Therefore, beam selection in beam management processes has become a challenging task. Additionally, the technical problems associated with conventional beam management processes are further attributed to increased user mobility, increased antenna numbers, and the use of higher frequencies in successive generations of wireless communication networks.

[0112] Some wireless communication systems (e.g., 5G NR systems) may not consider receive beamforming used for wireless communication at the UE. For example, these systems may anticipate the UE selecting receive beamforming for wireless communication without providing any feedback to the RAN regarding the UE's receive beamforming selection. Furthermore, the RAN may not have any feedback regarding candidate receive beams observed at the UE. This open-loop relationship between the receive beam used at the UE and beam management techniques can lead to increased power consumption at the UE and / or increased latency in wireless communication between the UE and the RAN. Additionally, under the assumption that a narrower receive beam maximizes performance between the UE and the RAN, the UE may tend to select a narrower receive beam. However, in some cases, a wide receive beam may be sufficient to meet the performance specifications or expectations of the communication link between the UE and the RAN. Therefore, receive beamforming feedback is required in some wireless communication systems.

[0113] Aspects related to channel state feedback for the receive beam assumption This disclosure provides techniques for channel state feedback for receive beaming assumptions. As an example, a UE may measure a signal received using a wide receive beam corresponding to a receive beaming assumption, and the UE may report to the RAN channel characteristics (e.g., L1-RSRP, L1-SINR, CQI, etc.) associated with multiple receive beaming assumptions (e.g., corresponding to the wide receive beam and other narrower receive beams). Receive beaming assumptions may be or include one or more parameters for beamforming the receive beam and / or characteristics of the receive beam. For example, receive beaming assumption parameters may include beamwidth, one or more antenna gains for beamforming, one or more antenna phases for beamforming, angle of arrival, angle of departure, number of active antenna elements, antenna panels for beamforming, or the number of active antenna panels for beamforming. In some cases, receive beaming assumptions may be associated with beamforming used concurrently across multiple antenna panels and / or antenna arrays.

[0114] This document describes various aspects associated with channel state feedback for receive beaming assumptions. For example, a UE may report measured and / or AI-predicted channel characteristics associated with receive beaming assumptions. In some cases, the RAN may request channel characteristics for a certain number of receive beaming assumptions and / or specific receive beaming assumptions (e.g., different beamwidths and / or spatial orientations) for this feedback. Various value limits regarding the reported channel characteristics can be configured for channel state feedback reports, such as those described herein. Figure 10 As described. Various differential quantization schemes can be used to report channel state feedback against the receive beam assumption, for example, as discussed in this paper. Figure 11A , Figure 11B , Figure 12A , Figure 12B and Figure 13 As described. Various types of signaling (e.g., RRC signaling, MAC signaling, DCI, SCI, and / or system information) can be used to configure and / or trigger channel state feedback for receive beam assumptions. In some cases, the RAN may request specific receive beam assumptions to be used for communication at the UE, for example, as described herein. Figure 14 As described.

[0115] The technical solutions described herein offer various beneficial effects and / or advantages. The techniques described herein for channel state feedback for receive beam assumptions can improve wireless communication performance, including, for example, increased throughput, reduced latency, and reduced power consumption at the UE and / or network entity. For example, improved wireless communication performance can be attributed to the channel state feedback indicating a specific receive beam that provides optimal channel conditions compared to other receive beams. The UE and / or RAN can select the receive beam for wireless communication between the UE and RAN. In some cases, the channel characteristics predicted by the AI ​​of the receive beam assumption can reduce latency and / or power consumption at the UE and / or network entity associated with beam management operations. For example, the UE can use a wide receive beam assumption (which uses relatively fewer antennas, thus allowing for reduced power consumption) to monitor a reference signal and predict channel characteristics associated with a narrow receive beam (this reduces latency in beam selection, beam failure detection, beam failure recovery, and / or radio link failure). In some cases, the UE and / or RAN can select a wide receive beam, as reported in the channel state feedback, for communication, thereby reducing power consumption at the UE.

[0116] Example of receiving beam assumption In some respects, a network entity may request channel state feedback from a UE for multiple receive beam assumptions. The UE may map each receive beam assumption to a receive beam, for example, as a set of receive beam characteristics and / or a set of parameters. The UE may test or measure each set of receive beam characteristics such that the corresponding set of receive beam characteristics being tested is a receive beam assumption, to verify whether the set of receive beam characteristics facilitates a sufficient communication link between the UE and the network entity. Channel state feedback may include measured and / or predicted channel characteristics associated with a set of communication resources (e.g., time-frequency resources). This set of communication resources may correspond to a set of transmit beams of the network entity. Communication resources may be used to transmit reference signals or pilot signals (e.g., SSB, CSI-RS, DM-RS, etc.) from the network entity. In some cases, communication resources may be or include dummy resources, which may represent logical resources not used for communication (e.g., untransmitted reference signals). As an example, dummy resources may be used for planning purposes, such as to determine the channel characteristics of future resources to be activated or enabled. Therefore, the channel characteristics corresponding to the receive beam assumption of virtual resources can be predicted.

[0117] Figure 7 An example receiving beam and its corresponding active antenna elements are illustrated. In this example, antenna panel 702 includes antenna elements 704a to 704d (collectively referred to as antenna elements 704) arranged in a linear antenna array. In some cases, antenna panel 702 may include antenna elements 704 arranged in other types of arrays, such as rectangular arrays. With all four antenna elements 704 active, antenna panel 702 can communicate via a first receiving beam 706 in various spatial directions (e.g., angle of arrival according to azimuth or elevation). With two of the antenna elements 704a, 704b active, antenna panel 702 can communicate via a second receiving beam 708. Each of the second receiving beams 708 has a larger beamwidth than any of the first receiving beams 706. With the first antenna element active, antenna panel 702 can communicate via a third beam 710, which has a larger beamwidth than any of the second receiving beams 708. Each of the receiving beams 706, 708, and 710 may correspond to a receiving beam assumption, such as beamwidth, beamforming configuration (e.g., gain or phase of the corresponding antenna element), spatial orientation (e.g., azimuth and / or elevation), etc.

[0118] Because of the different numbers of active antenna elements used for beamforming, the receiving beams 706, 708, and 710 can consume different amounts of power for wireless communication. For example, the third receiving beam 710 can consume the least amount of power among the receiving beams 706, 708, and 710 for wireless communication. Compared to the third receiving beam 710, the second receiving beam 708 can consume more power for wireless communication. The first receiving beam 706 can consume the most power among the receiving beams 706, 708, and 710 for wireless communication.

[0119] Example channel state feedback for the receive beam assumption The channel characteristics in the channel state feedback can include any of the various channel attributes. For example, signal characteristics may include Channel Quality Indicator (CQI), Signal-to-Noise Ratio (SNR), Signal-to-Interference Plus Noise Ratio (SINR), Signal-to-Noise Plus Distortion Ratio (SNDR), Received Signal Strength Indicator (RSSI), Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and / or Block Error Rate (BLER). In some aspects, channel characteristics may include physical layer, such as Layer 1 (L1) characteristics, such as L1-RSRP and / or L1-SINR. The channel state feedback may, for example, indicate the communication resource corresponding to the channel characteristics via a Communication Resource Identifier (ID). For example, the Communication Resource ID may appear in the channel state feedback along with the corresponding L1-RSRP, L1-SINR, and / or CQI.

[0120] Figure 8 An example channel state feedback 800 is depicted for communication resources (e.g., CSI-RS resources) and corresponding receive beam assumptions. In this example, the channel state feedback 800 includes an L1-RSRP for CSI-RS resources (CSI-RS resources #3, CSI-RS resources #4, and CSI-RS resources #7) and receive beam assumptions (DL-Rx assumption #1, DL-Rx assumption #2, and DL-Rx assumption #3). CSI-RS resources may correspond to different transmit beams used at network entities, for example, as described herein. Figure 5 As described. In some cases, CIS-RS resources may correspond to the same transmit beam but are used for different time and / or frequency resources. The receive beam assumption may correspond to different receive beams used at the UE, for example, as described herein. Figure 7 As described. As an example, DL-Rx assumption #1 may correspond to a wide receive beam, such as the third receive beam 710. DL-Rx assumption #2 may correspond to a narrower receive beam, such as any of the second receive beams in the second receive beam 708. DL-Rx assumption #3 may correspond to the narrowest receive beam (among the receive beam assumptions in the channel state feedback), such as any of the first receive beams in the first receive beam 706.

[0121] In some respects, channel state feedback may include a number of communication resources, such as the top K resources based on L1-RSRP, L1-SINR, etc. The top K resources may refer to the K highest-ranking communication resources sorted in descending order according to a given channel characteristic (e.g., L1-RSRP, L1-SINR, CQI, etc.), where K is the total number of communication resources to be reported in the channel state feedback. For example, the top K resources based on L1-RSRP could be the K communication resources with the highest L1-RSRP. As an example, the UE may be configured to report... Figure 8 The first two communication resources are based on L1-RSRP. In this case, the UE can report the L1-RSRP of CSI-RS resources #3 and #4 because these communication resources have a higher L1-RSRP than CSI-RS resource #7, and the UE can omit the L1-RSRP of CSI-RS resource #7.

[0122] ML models can be used to measure and / or predict channel state feedback for receive beam assumptions, as discussed in this paper. Figure 9 Further description. The measured channel characteristics, given communication resources and receive beam assumptions, may include channel characteristics determined based on measurement signals propagating in the communication resources using a receive beam associated with that receive beam assumption. The predicted channel characteristics, given communication resources and receive beam assumptions, may include channel characteristics determined using an ML model utilizing any of a variety of inputs, including measurement signals propagating in the same or different communication resources (with the same or different receive beam assumptions as the predicted channel characteristics).

[0123] As an example, regarding Figure 8 The channel characteristics of DL-Rx hypothesis #1 can be measured using the receive beam corresponding to DL-Rx hypothesis #1, and the channel characteristics of DL-Rx hypothesis #2 and DL-Rx hypothesis #3 can be predicted using an ML model that takes the measurement of DL-Rx hypothesis #1 as input. In this case, the UE can save power consumption by using a wide receive beam (such as wide receive beam 710) to monitor CSI-RS resources and predict the channel characteristics of a narrow receive beam (such as receive beams 706, 708).

[0124] In some respects, the UE and / or RAN may use any of a variety of schemes to determine whether the channel state feedback includes measured and / or predicted channel characteristics. In some cases, the UE may provide the RAN with UE capability information indicating whether the UE is able to report predicted channel characteristics. If the UE is able to report predicted channel characteristics, the UE may expect to receive requests from the RAN for predicted and / or measured channel characteristics associated with any type of communication resource, such as periodic communication resources (e.g., SSB and / or CSI-RS), semi-persistent communication resources (e.g., CSI-RS), and / or aperiodic communication resources (e.g., CSI-RS)). If the UE is unable to report predicted channel characteristics, the UE may only expect to receive requests from the RAN for measured channel characteristics associated with certain types of communication resources (e.g., periodic and / or semi-persistent communication resources, but not aperiodic communication resources).

[0125] In some cases, for measured channel state feedback, the UE may expect feedback to be provided only on certain types of communication resources (such as periodic communication resources and / or semi-persistent communication resources) rather than aperiodic communication resources.

[0126] In some respects, for channel state feedback with predicted channel characteristics, the receive beam assumption with measured channel characteristics may be controlled by the RAN or indicated by the UE. For example, the UE may identify one or more receive beam assumptions with measured channel characteristics in the channel state feedback or indicate such one or more receive beam assumptions to the RAN (e.g., via a field identifying such receive beam assumptions by a corresponding identifier), and any remaining receive beam assumptions may be considered to have predicted channel characteristics in the channel state feedback. Such a report indicating receive beam assumptions with measured channel characteristics in the channel state feedback may be carried in the channel state feedback (e.g., along with L1-RSRP, L1-SINR, CQI) or reported separately via uplink signaling (such as RRC signaling, MAC signaling (e.g., MAC-CE), uplink control information (UCI), and / or UE capability information).

[0127] In some cases, the RAN may indicate to the UE (e.g., via a corresponding receive beam assumption identifier) ​​a receive beam assumption that is expected to have measured channel characteristics in the channel state feedback, and the UE may treat any remaining receive beam assumptions as being expected to have predicted channel characteristics in the channel state feedback. As for... Figure 8 For example, the RAN can instruct the UE to provide the channel characteristics measured for DL-Rx hypothesis #1, and the UE can treat DL-Rx hypothesis #2 and DL-Rx hypothesis #3 as expected to have predicted channel characteristics.

[0128] In some respects, the measured channel characteristics can be specifically indicated by RAN and / or UE resources. In some cases, the RAN can, for example, indicate to the UE the communication resources expected to have the measured channel characteristics in the channel state feedback via a communication resource-specific indication of the channel state feedback for the received beam assumption. As for... Figure 8 For example, the RAN can instruct the UE to provide the channel characteristics measured for CSI-RS resource #4, and the UE can consider CSI-RS resources #3 and CSI-RS resources #7 as expected to have predicted channel characteristics.

[0129] In some respects, the UE and RAN can use specific schemes to determine which receive beam assumption has the measured channel characteristics, and it can be expected that any remaining receive beam assumptions have the predicted channel characteristics in the channel state feedback. In some cases, it can be expected that the UE uses the receive beam assumption with the lowest power consumption to perform the measurement. An example scheme could be: for the same communication resources, it is expected that the receive beam assumption with the lowest (or worst) channel characteristics among the receive beam assumptions has the measured channel characteristics, and it is expected that any remaining receive beam assumptions have the predicted channel characteristics. This scheme implicitly instructs the UE to use a receive beam assumption corresponding to a wide receive beam (such as receive beam 710) to obtain the measured channel characteristics. As for... Figure 8 For example, DL-Rx assumption #1 has the lowest L1-RSRP for CSI-RS resource #3 among the receive beam assumptions. In this case, the UE provides the measured channel characteristics for DL-Rx assumption #1, and therefore, the UE provides the predicted channel characteristics for DL-Rx assumptions #2 and #3. It should be noted that, as a supplement to or alternative to the examples described herein, other schemes may be used to determine which receive beam assumption has the measured channel characteristics in the channel state feedback.

[0130] Example of receive beamforming assumption: Channel characteristics predicted by machine learning In some respects, the UE can use ML models to determine the predicted channel characteristics based on the receive beam assumption.

[0131] Figure 9 This is a diagram illustrating an example channel characteristic prediction 900 performed by UE 104. ML model 910 is deployed at or on UE 104 so that UE 104 can make one or more channel characteristic predictions associated with communication resources and receive beam assumptions based on data input to ML model 910.

[0132] For example, a BS (not shown) may transmit one or more signals (e.g., SSB, DM-RS, CSI-RS) in a first set of communication resources (e.g., SSB resources, DM-RS resources, and / or CSI-RS resources) via a transmit beam set 902. A UE 104 uses a first receive beam set 904 (which may correspond to certain receive beam assumptions as described herein) to perform measurements (e.g., L1-RSRP measurements and / or other measurements) of one or more signals transmitted in the first set of communication resources or a subset thereof to obtain a first set of measurements 912 (sometimes referred to as parameters or channel characteristics). For example, each transmit beam (or subset thereof) 902 from the transmit beam set 902 carrying one or more signals may be associated with at least one measurement in the measurement 912 performed by the UE 104. Each receive beam (or subset thereof) 904 from the receive beam set 904 for receiving signals may be associated with at least one measurement in the measurement 912 performed by the UE 104. In some cases, UE 104 may perform per-receive-beam 904 measurements for each of the transmit beams 902, for example, as described herein. Figure 6 As described, UE 104 may input a first measurement set 912 (e.g., L1-RSRP measurements) into ML model 910. UE 104 may further input information associated with the transmit beam set 902, the first receive beam set 904, and / or the first communication resource set (or a subset thereof). The information associated with transmit beam 902 and / or receive beam 904 may include beam direction (e.g., spatial direction), beamwidth, beam shape, and / or other characteristics of the corresponding beam.

[0133] The ML model 910 can output one or more predictions. More specifically, the ML model 910 predicts one or more measurements 914 for the second receive beam set 906. The measurements 914 may include predicted channel characteristics (e.g., predicted L1-RSRP measurements) of the second receive beam set 908, which may correspond to one or more receive beam assumptions. The predicted measurements 914 may correspond to a first communication resource set and / or a second communication resource set different from the first communication resource set.

[0134] In some examples, the first receiving beam set 904 (e.g., the measured beam set) may be referred to as the "B beam set," and the second receiving beam set 908 (e.g., the beam set associated with a predicted measurement of a second set of communication resources) may be referred to as the "A beam set." In other words, the "B beam set" is the beam set for which measurements are taken and used as input in the ML model 910, while the "A beam set" is the beam set for which the ML model 910 performs predictions.

[0135] In some examples, the first receiving beam set 904 is a subset of the second receiving beam set 908. In other examples, the first receiving beam set 904 and the second receiving beam set 908 are different beams and / or may be mutually exclusive sets. For example, the first receiving beam set 904 may include wide beams (e.g., unthinned beams or beams with a beamwidth that satisfies a first threshold), and the second receiving beam set 908 may include narrow beams (e.g., thinned beams or beams with a beamwidth that satisfies a second threshold).

[0136] Using ML model 910 for channel characteristic prediction can reduce the amount of beam measurements performed by UE 104 (e.g., compared to the above). Figure 6 Compared to the exhaustive search method described, this saves power and / or network resources at UE 104 that would otherwise be used to measure or transmit all beams included in at least the first beam set.

[0137] Example of defining parameters for the receive beam hypothesis In some respects, one or more characteristics and / or parameters defining the receive beam assumption used at the UE can be controlled by any of a variety of schemes. Characteristics or parameters defining the receive beam assumption may include one or more of the following: beamwidth, beamforming gain or phase, beam pointing direction (e.g., AoA or AoD based on azimuth and / or elevation angles), the total number of antenna elements activated for beamforming, antenna panel identifiers used, the total number of antenna panels used, etc. In some respects, characteristics or parameters defining the receive beam assumption may be or include any of the aspects, parameters, or attributes described herein with respect to beam definition. For example, the defining characteristics and / or parameters of the receive beam assumption may be known to the RAN (e.g., predefined or controlled by the RAN), explicitly or implicitly indicated to the RAN (e.g., via the UE), and / or not explicitly indicated to the RAN.

[0138] In some cases, the UE may indicate that the channel state feedback includes channel characteristics for different receive beam assumptions, without explicitly indicating the characteristics and / or parameters defining such receive beam assumptions. One or more characteristics and / or parameters defining receive beam assumptions may not be controlled by the RAN, reported to the RAN by the UE, and / or predefined. For example, the RAN may indicate to the UE the number of receive beam assumptions to be processed in the channel state feedback, without indicating any characteristics or parameters defining the receive beam assumptions, and the UE may select receive beam assumptions for the channel state feedback. In some cases, the UE may report capability information to the RAN indicating the maximum number of receive beam assumptions the UE can process in the channel state feedback. It is anticipated that the total number of receive beam assumptions requested by the RAN to be processed in the channel state feedback will not exceed the UE's capability as indicated in the capability information.

[0139] In some cases, the UE can be pre-configured to arrange channel characteristics corresponding to different receive beam assumptions in a certain order (e.g., ascending or descending order based on the respective channel characteristics). It is expected that the value of any identifier for the receive beam assumption in the channel state feedback will increase or decrease relative to the arrangement of the channel characteristics.

[0140] As for Figure 8 For example, suppose the RAN requests the UE to provide channel characteristics regarding three receive beam assumptions for each reference signal identified in the corresponding L1-RSRP feedback (e.g., reference signals corresponding to CSI-RS resources #3, #4, and #7) via associated CSI report settings (e.g., RRC configuration for periodic or semi-persistent feedback, or aperiodic triggering). The specific characteristics or parameters defining each receive beam assumption are selected by the UE and are transparent to the RAN (unknown). Assume the UE selects to report for the corresponding L1-RSRP feedback... Figure 7 The UE reports the channel state feedback of the receive beam assumptions for the second receive beam 708. In some aspects, the UE is expected to report L1-RSRPs in ascending order, where any identifiers of the receive beam assumptions are in ascending order, for example, from DL-Rx assumption #1 to DL-Rx assumption #3. The UE reports L1-RSRPs in ascending order, where the values ​​of the corresponding logical identifiers of the receive beam assumptions increase from DL-Rx assumption #1 to DL-Rx assumption #3. For subsequent reporting occasions (e.g., subsequent reporting periods or reporting events), the UE reports L1-RSRPs arranged in ascending order, but such L1-RSRPs may correspond to different receive beam assumptions (e.g., different receive beams in the second receive beam 708), where the values ​​of the logical identifiers increase from DL-Rx assumption #1 to DL-Rx assumption #3.

[0141] In some respects, the defining characteristics or parameters of the receive beam assumptions reported in the channel state feedback can be pre-configured (or predefined) or controlled by the RAN. The UE may report to the RAN capability information indicating the various parameters (e.g., as discussed earlier herein) supported by the UE for defining the receive beam assumptions. As an example, the UE may report different AoA and / or beamwidths that the UE is capable of using for receive beam assumptions. The RAN may request the UE to report channel state feedback regarding certain candidate receive beam assumptions (e.g., different AoA and / or beamwidths), which can be selected based on the UE capability information. The UE may report the defining parameters of each receive beam assumption in the receive beam assumptions in the channel state feedback to the RAN.

[0142] As an example, there may be a total of six predefined receive beam assumptions corresponding to different beamwidths (e.g., based on half-power beamwidth, also known as 3 dB beamwidth). The RAN may request the UE to provide channel state feedback on three of the six receive beam assumptions. For example, these three different beamwidths may correspond to the beamwidths of the first receive beam 706, the second receive beam 708, and the third receive beam 710.

[0143] Example limits of channel characteristics In some respects, channel feedback can be reported based on certain limits associated with receive beaming assumptions for the corresponding channel characteristics (e.g., L1-RSRP, L1-SINR, CQI, etc.). The RAN can control the channel characteristic limits associated with the receive beaming assumptions. In some cases, minimum and / or maximum limits can be associated with each receive beaming assumption in the receive beaming assumptions for the corresponding channel characteristics. The RAN can indicate such minimum / maximum limits associated with the receive beaming assumptions to the UE.

[0144] In some cases, differential limits may be associated with certain receive beam assumptions. The differential limits for a receive beam assumption can be relative to any of a variety of values, including, for example, absolute values, (minimum / maximum) limits associated with another receive beam assumption, or measured or predicted channel characteristics associated with another receive beam assumption. In some cases, a first receive beam assumption used to report channel state feedback on a particular communication resource may have minimum / maximum limits for the corresponding channel characteristics, and a second receive beam assumption used to report channel state feedback on the same communication resource may have a differential maximum / minimum limit offset (e.g., ±6 dBm) relative to the minimum / maximum limit associated with the first receive beam assumption. In some cases, the channel characteristics of the first receive beam assumption may be measured or predicted, and the second receive beam assumption may have a differential minimum / maximum limit offset relative to the measured or predicted value of the first receive beam assumption.

[0145] When channel characteristics do not meet the corresponding limits of the receive beam hypothesis, the UE may perform any of a variety of actions. For example, the UE may measure and / or predict a larger number of receive beam hypotheses (e.g., 8 or 10 received beam hypotheses processed internally) than the number of received beam hypotheses processed in the channel state feedback report (e.g., 2 or 3). (As if you could only report the first 3 out of 6). Therefore, the limits regarding channel characteristics can be used as a criterion for determining which received beam hypotheses to process in the channel state feedback to network entities (e.g., only reporting channel characteristics and corresponding received beam hypotheses that meet the limits). In some cases, the UE may notify the RAN that a received beam hypothesis does not meet the limits assigned to it. In some cases, the UE may avoid reporting channel characteristics of received beam hypotheses that do not meet the limits. For example, the UE may omit the received beam hypothesis from the channel state feedback. In some cases, the UE may use one or more code points (e.g., reserved values) to indicate that the measured or predicted channel characteristics do not meet the minimum, maximum, and / or differential limits. For example, if the measured or predicted channel characteristics do not meet the minimum or maximum limits associated with the receive beam assumption, the UE may include code points for the unmet channel characteristics associated with the receive beam assumption in the channel state feedback.

[0146] Figure 10 This is a histogram illustrating example channel characteristic values ​​(e.g., L1-RSRP) 1002a to 1002c corresponding to different receive beam assumptions. These values ​​are related to various limits 1004a to 1004d assigned to the respective receive beam assumptions for reporting channel state feedback on the same communication resources. In this example, a first receive beam assumption may have a minimum limit corresponding to a first limit 1004a and a maximum limit corresponding to a second limit 1004b, wherein the expected measured or predicted channel characteristics are between the minimum and maximum limits. The minimum and maximum limits may be assigned as absolute values ​​(e.g., -100 dBm and -90 dBm, respectively) to the first receive beam assumption.

[0147] The second receive beam assumption may have a minimum limit corresponding to the second limit 1004b and a maximum limit corresponding to the third limit 1004c. The minimum and maximum limits may be assigned to the second receive beam assumption as differences relative to the maximum limit for the first receive beam assumption (e.g., the second limit 1004b). For example, a first offset 1006a (e.g., +6dBm) relative to the second limit 1004b may define the maximum limit for the second receive beam assumption.

[0148] The third receive beam assumption may have a minimum limit corresponding to the third limit 1004c and a maximum limit corresponding to the fourth limit 1004d. The minimum and maximum limits may be assigned to the third receive beam assumption as differential values ​​using a second offset 1006b (e.g., +6dBm) relative to the third limit 1004c.

[0149] The first channel characteristic value 1002a and the second channel characteristic value 1002b satisfy the limits associated with the corresponding first and second receive beam assumptions. The third channel characteristic value 1002c is lower than the minimum limit for the third receive beam assumption (e.g., the third limit 1004c). In this case, the UE can use code point 1008 to report the channel characteristics of the third receive beam assumption.

[0150] Example differential quantization for channel characteristics In some respects, channel state feedback can use any of a variety of quantization schemes to format channel characteristics across communication resources and corresponding receive beam assumptions. In some cases, differential quantization schemes can be applied to the quantization of channel characteristics. For example, the quantization of a particular channel characteristic can be absolute quantization, and the quantization of another channel characteristic for different communication resources and / or different receive beam assumptions can be differential quantization relative to absolute quantization.

[0151] Figure 11A , Figure 11B , Figure 12A , Figure 12B and Figure 13 Illustrations of example differential quantization schemes 1100A, 1100B, 1200A, 1200B, and 1300 for channel characteristics across various communication resource-receive beam assumption pairs are presented. In these examples, various resources (e.g., resource #1 or abbreviated as Rsc #1) represent communication resources, such as reference signal resources including SSB resources, CSI-RS resources, and / or DM-RS resources. Assumptions (e.g., assumption #1) represent receive beam assumptions, such as receive beam assumptions corresponding to any one of the first receive beam 706, the second receive beam 708, and the third receive beam 710.

[0152] refer to Figure 11A In the first example differential quantization scheme 1100A, the channel characteristics 1102 of resource #1 and assumption #1 (e.g., L1-RSRP, L1-SINR, and / or CQI) are quantized via absolute quantization (e.g., using...). The channel characteristic 1102 is reported as the strongest or weakest (maximum or minimum) among the reported channel characteristics (e.g., 1102 and 1104). In some respects, if channel characteristic 1102 has the strongest or weakest (maximum or minimum) value among the reported channel characteristics (e.g., 1102 and 1104), then channel characteristic 1102 is selected for absolute quantization. The remaining resource-assumption pair (e.g., resources #2 to #5 and assumptions #2 and #3) has its remaining channel characteristic 1104 differentially quantized relative to channel characteristic 1102, for example, using... For example, channel characteristic 1102 is reported as an absolute value (e.g., -90dBm), and then for each of the other channel characteristics 1104, the difference between the value of channel characteristic 1102 (e.g., -90dBm) and the value of the corresponding channel characteristic 1104 (e.g., -80dBm) is reported as the difference between the corresponding channel characteristic 1104 and channel characteristic 1102 (e.g., 10dBm).

[0153] like Figure 11B As shown, in the second example differential quantization scheme 1100B, the channel characteristics 1106a to 1106e (collectively referred to as channel characteristics 1106) of resources #1 to resources #5 and assumption #1 are quantized via absolute quantization (e.g., using...). The channel characteristics 1106 are reported as follows: If any or all of the channel characteristics 1106 have the strongest or weakest value among the reported channel characteristics (e.g., 1106 and 1108), then channel characteristic 1106 may be selected for absolute quantization. The remaining channel characteristics 1108a to 1108e, as assumed (e.g., assumptions #2 and #3), are differentially quantized relative to channel characteristic 1106 associated with the same communication resource, for example, using... Units digit. For example, the residual channel characteristic 1108a of resource #1 corresponding to assumptions #2 and #3 is differentially quantized relative to the channel characteristic 1106a of resource #1 corresponding to assumption #1.

[0154] about Figure 12A In the third example differential quantization scheme 1200A, the channel characteristics 1202a to 1202c (collectively referred to as channel characteristics 1202) of resource #1 are quantized via absolute quantization (e.g., using...). The channel characteristics 1202 are reported as follows: If any or all of the channel characteristics 1202 have the strongest or weakest value among the reported channel characteristics (e.g., 1202 and 1204), then channel characteristic 1202 may be selected for absolute quantization. The remaining channel characteristics 1204a to 1204c of each hypothesis (e.g., hypothesis #1 to hypothesis #3) are differentially quantized relative to the channel characteristics 1202 associated with the same hypothesis in the remaining resources (e.g., resources #2 to resources #5), for example, using... Units digit. For example, the residual channel characteristics 1204a of resources #2 to #5 corresponding to assumption #1 are differentially quantized relative to the channel characteristics 1202a of resource #1 corresponding to the same assumption #1.

[0155] refer to Figure 12B In the fourth example differential quantization scheme 1200B, the channel characteristic 1206 corresponding to resource #1 of assumption #1 is quantized via absolute quantization (e.g., using...). The channel characteristic 1206 is reported as the strongest or weakest among the reported channel characteristics (e.g., 1206, 1208, and 1210). Channel characteristic 1206 can then be selected for absolute quantization. The set of channel characteristics 1208a to 1208d corresponding to the remaining resources (e.g., resources #2 to #5) under the same assumption as channel characteristic 1206 (e.g., assumption #1) is differentially quantized relative to channel characteristic 1206, for example, using... Units. The channel characteristic sets 1210a to 1210e of the remaining hypotheses (hypotheses #2 and #3) are differentially quantized relative to the channel characteristics associated with the same resources and hypothesis #1 (e.g., 1206 and 1208), for example, using For example, channel characteristic 1208a is differentially quantized relative to channel characteristic 1206, and the remaining channel characteristic 1210b of the same resource as channel characteristic 1208a is differentially quantized relative to channel characteristic 1208a.

[0156] like Figure 13 As shown, in the fifth example differential quantization scheme 1300, the channel characteristic 1302a of resource #1 corresponding to assumption #1 is quantized via absolute quantization (e.g., using...). The channel characteristic 1302 is reported as the strongest or weakest among the reported channel characteristics (e.g., 1302, 1304a, 1304b, and 1306a to 1306c). Channel characteristic 1302 may be selected for absolute quantization. The set of channel characteristics 1304a to 1304b corresponding to the remaining assumptions (e.g., assumptions #2 and #3) of the same resource as channel characteristic 1302 (e.g., resource #1) is differentially quantized relative to channel characteristic 1302, for example, using... Units. The channel characteristic sets 1306a to 1306c of the remaining resources (resources #2 to #5) are differentially quantized relative to the channel characteristics (e.g., 1206 and 1208) associated with resource #1 and the corresponding assumptions (e.g., assumptions #1, #2, or #3), for example, using Units digit. As an example, channel characteristic 1304a is differentially quantized relative to channel characteristic 1302, and the remaining channel characteristic 1306b, which is the same as channel characteristic 1304a, is differentially quantized relative to channel characteristic 1304a.

[0157] In some respects, channel characteristics for the same resources and different receive beam assumptions can be arranged in ascending or descending order relative to the corresponding assumption identifiers. In some cases, resource identifiers for corresponding communication resources can be reported in channel state feedback. The number of bits used for various absolute and / or differential subdivisions can be predefined and / or configured by the RAN (e.g., signaled by network entities).

[0158] Example signaling scheme for configuring or triggering feedback for the receive beam assumption In some respects, channel state feedback can be configured and / or triggered for reporting via any of various signaling schemes, such as RRC signaling, MAC signaling, DCI, SCI, and / or system information. For example, a network entity can transmit a configuration to the UE via RRC signaling for reporting channel state feedback associated with receive beam assumptions. The RRC configuration of the CSI reporting settings can indicate various settings for reporting channel state feedback associated with receive beam assumptions. In some cases, the RRC configuration can indicate CSI reporting settings to be used for non-periodic channel state feedback reporting. For example, CSI- AssociatedReportConfigInfo It can identify the CSI reporting configuration used for aperiodic reporting and the corresponding aperiodic trigger state. The list of aperiodic CSI trigger states can be selected from one or more options in the CSI reporting settings for aperiodic channel state feedback regarding receive beam assumptions.

[0159] In some respects, MAC signaling (e.g., MAC-CE) can activate or deactivate semi-persistent channel state feedback reporting. MAC signaling can select one or more options from multiple RRC configuration options in the CSI reporting settings for semi-persistent channel state feedback regarding receive beam assumptions.

[0160] In some respects, DCI can be used to trigger, configure, activate, or deactivate channel state feedback regarding receive beam assumptions. For example, the DCI format may include one or more DCI fields associated with channel state feedback regarding receive beam assumptions. In some cases, DCI fields may correspond to certain CSI reporting settings. DCI can select one or more options from multiple RRC configuration options in the CSI reporting settings.

[0161] Example of activating the receive beam hypothesis for communication In some respects, a UE may receive an indication to communicate with wireless communication devices (such as network entities and / or another UE) using a specific receive beaming assumption. Communication configuration indicators (such as a transmit configuration indicator (TCI) state) may indicate the (preferred) receive beaming assumption to be used for communication associated with communication resources. For example, the TCI state may indicate the relationship between a receive beaming assumption identifier and a communication resource identifier (e.g., an SSB resource ID, a CSI-RS resource ID, and / or a DM-RS resource ID). This relationship may indicate the use of a receive beam corresponding to the receive beaming assumption to receive one or more signals associated with the communication resource identifier, such as signals with a quasi-co-addressable (QCL) relationship to the communication resource identifier.

[0162] Figure 14 This is a diagram illustrating an example relationship 1400 between Channel State Feedback 800 and TCI State 1402. (See the text regarding...) Figure 8 As described, the channel state feedback 800 can indicate channel characteristics (e.g., RSRP, SINR, and / or CQI) associated with CSI-RS resources (e.g., CSI-RS resources #3, #4, and #7) and corresponding receive beam assumptions (e.g., DL-Rx assumption #1, #2, and #3). TCI state 1402 associates one or more reference signals with corresponding receive beam assumptions. TCI state 1402 includes a reference source field (e.g., a reference signal field) 1404 indicating a communication resource ID 1406 (e.g., CSI-RS resource #4). The communication resource ID 1406 may include an SSB ID, a CSI-RS ID, and / or a DM-RS ID. TCI state 1402 also includes a preferred assumption field 1408, which indicates the receive beam assumption ID (e.g., DL-Rx assumption #2) to be used for receiving signals associated with CSI-RS resource #4. These signals may include signals transmitted via CSI-RS resource #4 and / or signals that have a QCL relationship with CSI-RS resource #4, such as PDSCH and / or PDCCH.

[0163] In some respects, the TCI state can be configured via RRC signaling. For example, RRC configuration may include the TCI state, which includes one or more receive beam assumptions, such as... Figure 14As depicted in the diagram. A TCI state can indicate an association between one or more reference signals and one or more receive beam assumptions. This association can instruct the UE to use the receive beam assumption to receive the signal associated with the reference signal. MAC signaling (e.g., MAC-CE) can be used to activate or deactivate one or more configured TCI states for certain communications, such as TCI states associated with one or more receive beam assumptions configured via RRC signaling. MAC signaling can define code points corresponding to TCI states, where code points can correspond to one or more TCI states. A DCI can be used to indicate the use of active TCI states (such as communications scheduled via DCI). A DCI can have a TCI state field that indicates the TCI state via code points defined by MAC signaling.

[0164] As an example, the RAN may select the association between CSI-RS resource #4 and DL-Rx assumption #2 based at least in part on channel state feedback 800 reported by the UE. The RAN may transmit a configuration to the UE with TCI state 1402, which indicates the association between CSI-RS resource #4 and DL-Rx assumption #2. The RAN may transmit an indication to the UE to activate TCI state 1402 for communication between the RAN and the UE. In response to the activation of TCI state 1402, the UE may use the receive beam corresponding to DL-Rx assumption #2 to receive signals transmitted from the RAN.

[0165] In some respects, the TCI state can be used to indicate the association between reference signals and receive beam assumptions for multiple transmit-receive points (TRPs) (such as multiple BSs, multiple RUs, multiple radio heads, multiple antenna panels, etc.). If multiple reference sources are associated with the TCI state indicated by the DCI (e.g., in a multi-TRP scenario), one or more sets of receive beam assumptions can be signaled as described herein with respect to TCI states. In some cases, the number of receive beam assumption IDs may be equal to the number of reference sources in the corresponding TCI state. The TCI state can indicate that each receive beam assumption in the receive beam assumptions is associated with at least one of the reference sources.

[0166] In some respects, when determining the receive beam assumption as indicated in the TCI state, the UE may rely on the last (e.g., most recent) reported channel state feedback. As for... Figure 14 For example, Channel State Feedback 800 could represent the last Channel State Feedback reported by the UE and received by the RAN. Therefore, the Receive Assumption ID indicated in the TCI state could correspond to the Receive Beam Assumption Identifier indicated in the most recent Channel State Feedback reported by the UE.

[0167] Example operations of entities in a communication network Figure 1500 illustrates a process flow 1500 for communication between network entity 1502 and user equipment (UE) 1504 in a network. In some aspects, network entity 1502 may be related to... Figure 1 and Figure 3 The BS 102 depicted and described or related to Figure 2 Examples of decomposed base stations are depicted and described. Similarly, UE 1504 could be about... Figure 1 and Figure 3 An example of UE 104 is depicted and described. However, in other respects, UE 1504 may be another type of wireless communication device, and network entity 1502 may be another type of network entity or network node, such as those network entities or network nodes described herein.

[0168] At 1506, UE 1504 transmits capability information to network entity 1502, which includes the UE 1504's ability to report channel state feedback corresponding to receive beaming assumptions. In some aspects, the capability information may indicate whether the UE is able to report predicted channel characteristics and / or the maximum number of receive beaming assumptions that the UE can include in the channel state feedback. In some cases, the capability information may indicate various parameters supported by the UE for defining receive beaming assumptions, as described herein.

[0169] At 1508, UE 1504 receives from network entity 1502 an indication to report channel state feedback corresponding to the receive beam assumption. In some cases, UE 1504 may receive configurations for reporting channel state feedback corresponding to the receive beam assumption, such as configurations for CSI reporting. This configuration can configure any of the settings or parameters described herein for reporting channel state feedback corresponding to the receive beam assumption. For example, the configuration may indicate the total number of receive beam assumptions for which it will report channel characteristics in the channel state feedback. This total number may satisfy the maximum number indicated in the capability information at 1506. This configuration may instruct the UE to periodically report channel state feedback and / or set the corresponding periodicity for periodic and / or semi-persistent reporting (e.g., periodicity from 4 time slots to 640 time slots). In some cases, UE 1504 may receive triggers to activate or deactivate semi-persistent and / or non-periodic channel state feedback reporting.

[0170] At 1510, UE 1504 receives one or more signals associated with communication resources (e.g., reference signals, including SSB, CSI-RS, and / or DM-RS) from network entity 1502. In some cases, UE 1504 may receive signals associated with communication resources without an indication of reporting channel state feedback and / or before receiving an indication of reporting channel state feedback. UE 1504 may use one or more receive beams corresponding to one or more receive beam assumptions 1520 to receive signals. For example, UE 1504 may use a third receive beam 710 to receive signals, and may use measurements of signals received using the third receive beam 710 to predict (e.g., corresponding to the first receive beam 706) the channel characteristics of other receive beam assumptions. Using a wide receive beam for signal reception allows UE 1504 to save power consumption while maximizing the coverage area that UE 1504 can monitor using the wide receive beam.

[0171] At 1512, UE 1504 determines channel characteristics (e.g., RSRP, SINR, and / or CQI) for each of the multiple receive beams (e.g., communication resources corresponding to the signal received at 1510). The corresponding channel characteristics can be measured or predicted, as described herein. For example, UE 1504 may use an ML model to predict the channel characteristics of a narrow receive beam (e.g., the first receive beam 706) or a virtual beam, at least in part, based on a measured signal received using a wide receive beam (e.g., the third receive beam 710).

[0172] At 1514, UE 1504 transmits a report to network entity 1502 including channel state feedback corresponding to the receive beam assumption, for example, as described herein. Figure 8 As described. This report may include measured or predicted channel characteristics of communication resources for each receive beam assumption in the receive beam assumption.

[0173] At 1516, UE 1504 receives from network entity 1502 a TCI state indicating the association between a reference signal and a receive beam assumption. In some cases, UE 1504 may receive an RRC configuration for the TCI state, a MAC-CE activating the TCI state, and / or a DCI indicating communication using the corresponding receive beam assumption of the TCI state.

[0174] At 1518, UE 1504 communicates with network entity 1502 using a receive beam corresponding to the receive beam assumption indicated in the TCI state obtained at 1516. In some cases, network entity 1502 may adapt parameters associated with the communication channel between UE 1504 and network entity 1502 based on channel state feedback. For example, network entity 1502 may determine the modulation and decoding scheme (MCS), code rate (e.g., the proportion of non-redundant data streams), number of aggregated carriers, number of MIMO layers, channel bandwidth, subcarrier spacing, frequency range (e.g., FR1 or FR2), etc., for the communication channel.

[0175] Example operation of user equipment Figure 16 It shows a device (such as) Figure 1 and Figure 3 Method 1600 for wireless communication of UE 104.

[0176] Method 1600 begins at box 1605: receiving an indication to provide feedback (e.g., channel state feedback) to a network entity (e.g., BS 102), the feedback including channel characteristic information for one or more communication resources, including communication resources (e.g., SSB resources, CSI-RS resources, and / or DM-RS resources).

[0177] Then, method 1600 proceeds to block 1610: transmitting a report that includes an indication of corresponding determined channel characteristics of the communication resources for each of the plurality of receive beam assumptions. The report may include channel state feedback corresponding to the receive beam assumption, for example, as described herein. Figure 8 As described.

[0178] In some aspects, each of the plurality of receive beam assumptions is associated with a different set of receive beam parameters. In some aspects, each set of receive beam parameters includes one or more of the following: beamwidth, one or more antenna gains, one or more antenna phases, angle of arrival, angle of departure, number of antenna elements, antenna panel identifier, or number of antenna panels. In some aspects, the plurality of receive beam assumptions includes a first receive beam assumption associated with a first set of receive beam parameters and a second receive beam assumption associated with a second set of receive beam parameters different from the first set. In some aspects, the plurality of receive beam assumptions includes a first receive beam assumption associated with a first receive beam having a first beamwidth and a second receive beam assumption associated with a second receive beam having a second beamwidth different from the first beamwidth.

[0179] In some respects, method 1600 also includes predicting corresponding determined channel characteristics for communication resources based on the receive beam assumptions among multiple receive beam assumptions. For example, UE 104 can use an ML model to predict channel characteristics, as described herein. Figure 9 As described.

[0180] In some aspects, method 1600 further includes using a first receiving beam associated with a first receiving beam assumption among a plurality of receiving beam assumptions to measure a signal propagating in a communication resource to determine corresponding determined channel characteristics of the communication resource for the first receiving beam assumption. In some aspects, method 1600 further includes predicting corresponding determined channel characteristics of the communication resource for a second receiving beam assumption among a plurality of receiving beam assumptions, at least in part, based on the signal measured using the first receiving beam.

[0181] In some respects, the corresponding channel characteristics for communication resources include CQI, SINR, RSRP, RSRQ, or combinations thereof.

[0182] In some respects, method 1600 also includes transmitting an indication of whether the device is capable of predicting the channel characteristics of communication resources. For example, the UE may transmit this indication via capability information, as described herein. Figure 15 As described.

[0183] In some aspects, method 1600 further includes a communication (e.g., transmission or acquisition) indication that, for each of a plurality of receive beam assumptions, indicates whether a corresponding determined channel characteristic of the communication resource for that receive beam assumption is predicted or measured. In some aspects, the indication that, for each of the plurality of receive beam assumptions, the corresponding determined channel characteristic of the communication resource for that receive beam assumption is predicted or measured includes: one or more identifiers of one or more of the plurality of receive beam assumptions for which the corresponding determined channel characteristic of the communication resource is measured. In some aspects, the indication that, for each of the plurality of receive beam assumptions, the corresponding determined channel characteristic of the communication resource is predicted or measured includes: a resource-specific indication that, for each of the plurality of receive beam assumptions, the corresponding determined channel characteristic of the communication resource is measured.

[0184] In some respects, the determined channel characteristic with the lowest value among the corresponding determined channel characteristics of multiple receive beam assumptions is measured, and the corresponding determined channel characteristic without the lowest value is predicted. As for... Figure 8For example, the channel characteristic associated with DL-RX hypothesis #1 can be a minimum value and is measured for each of the corresponding communication resources, and other channel characteristics of other receive beam assumptions can be predicted, for example, via signal measurements obtained using DL-RX hypothesis #1. It should be noted that selecting a channel characteristic with the minimum value to be measured is merely an example, and any other criteria used for selecting the measured or predicted channel characteristics can be used as a supplement to or alternative to the minimum value criterion.

[0185] In some respects, method 1600 also includes transmitting an indication of the maximum number of receive beam assumptions. The maximum number of receive beam assumptions may indicate the maximum number of receive beam assumptions that the UE can report in a report used for channel state feedback.

[0186] In some respects, method 1600 also includes receiving an indication of the number of receive beam assumptions to be used for reporting channel characteristic information. The number of receive beam assumptions may indicate the total number of receive beam assumptions present in the report of channel state feedback.

[0187] In some respects, method 1600 also includes transmitting an indication of one or more sets of receive beam parameters that the device can use to report channel state feedback.

[0188] In some respects, method 1600 also includes receiving an indication of one or more sets of receive beam parameters to be used for one or more of a plurality of receive beam assumptions.

[0189] In some respects, method 1600 also includes transmitting an indication of one or more sets of receive beam parameters for one or more of a plurality of receive beam assumptions.

[0190] In some respects, method 1600 also includes receiving indications of one or more limits for channel characteristic information to be used in reporting feedback for one or more communication resources, for example, as described herein. Figure 10 As described. In some aspects, one or more limit values ​​indicate one or more absolute limit values ​​with respect to the channel characteristic information to be used for reporting feedback. In some aspects, one or more limit values ​​indicate one or more differential limit values ​​with respect to the differential values ​​between the channel characteristic information to be used for reporting feedback. In some aspects, the indication of the corresponding determined channel characteristics of the communication resource includes values ​​of one or more limit values ​​(e.g., code point 1008) indicating that the corresponding determined channel characteristics do not satisfy the receive beam assumption among a plurality of receive beam assumptions.

[0191] In some respects, for a first receive beam assumption among a plurality of receive beam assumptions, the indication of corresponding determined channel characteristics for communication resources for the first receive beam assumption includes an indication of an absolute quantization value, and for a second receive beam assumption among a plurality of receive beam assumptions, the indication of corresponding determined channel characteristics for communication resources for the second receive beam assumption includes an indication of a differential quantization value relative to the absolute quantization value, for example, as described herein regarding Figure 11A , Figure 11B , Figure 12A , Figure 12B and / or Figure 13 As described.

[0192] In some respects, the instructions to provide feedback are received via one or more of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) signaling, Downlink Control Information (DCI), Sidelink Control Information (SCI), or System Information.

[0193] In some aspects, method 1600 also includes a configuration for receiving the TCI state, which associates the TCI state with at least one of one or more communication resources and at least one receive beam assumption, for example, as described herein. Figure 14 As described.

[0194] In some aspects, at least one receive beam hypothesis includes multiple receive beam hypotheses, and method 1600 further includes receiving an indication of the TCI state, for example via MAC-CE and / or DCI, the indication of the TCI state including an indication of one or more of the multiple receive beam hypotheses.

[0195] In some aspects, at least one receive beam assumption includes multiple receive beam assumptions, and method 1600 further includes, for example, an indication to switch to TCI state via DCI reception, the indication to switch to TCI state including an indication of at least one of the one or more receive beam assumptions.

[0196] In some aspects, at least one receive beam assumption includes multiple receive beam assumptions, at least one of one or more communication resources includes multiple communication resources, and method 1600 further includes receiving an indication of a TCI state, the indication of the TCI state for each of the multiple communication resources including a corresponding indication for one or more receive beam assumptions among the multiple receive beam assumptions (e.g., for a multi-TRP scenario).

[0197] In some aspects, method 1600 also includes receiving an indication of an activated TCI state. In some aspects, method 1600 also includes communicating using the receive beam of the device associated with one of a plurality of receive beam assumptions, based on the report being a time-relevant (e.g., recently reported) report transmitted by the device.

[0198] In some respects, method 1600 or any aspect thereof may be made by means of a device (such as...) Figure 18 The communication device 1800 performs the method, which includes various components operable to, configured to, or adapted to perform the method 1600. The communication device 1800 is described in further detail below.

[0199] It should be noted that Figure 16 This is merely one example of a method, and other methods that include fewer, additional, or alternative operations may also be consistent with this disclosure.

[0200] Example operations of network entities Figure 17 It shows a device (such as) Figure 1 and Figure 3 BS 102 or as about Figure 2 The method for wireless communication using the decomposed base station discussed in the article 1700.

[0201] Method 1700 begins at block 1705: transmitting an instruction to a device (e.g., BS 102) to provide feedback (e.g., channel state feedback), the feedback including channel characteristic information for one or more communication resources, including communication resources.

[0202] Then, method 1700 proceeds to block 1710: obtaining a report that includes an indication of corresponding determined channel characteristics of the communication resources for each of the plurality of receive beam assumptions. This report may include channel state feedback corresponding to the receive beam assumption, for example, as described herein. Figure 8 As described.

[0203] In some aspects, each of the plurality of receive beam assumptions is associated with a different set of receive beam parameters. In some aspects, each set of receive beam parameters includes one or more of the following: beamwidth, one or more antenna gains, one or more antenna phases, angle of arrival, angle of departure, number of antenna elements, antenna panel identifier, or number of antenna panels. In some aspects, the plurality of receive beam assumptions includes a first receive beam assumption associated with a first set of receive beam parameters and a second receive beam assumption associated with a second set of receive beam parameters different from the first set of receive beam parameters. In some aspects, the plurality of receive beam assumptions includes a first receive beam assumption associated with a first receive beam having a first beamwidth and a second receive beam assumption associated with a second receive beam having a second beamwidth different from the first beamwidth.

[0204] In some respects, the corresponding determination of channel characteristics for communication resources based on multiple receive beam assumptions is predictable. For example, the UE can use ML models to predict channel characteristics, as presented in this paper relative to... Figure 9 As described.

[0205] In some aspects, method 1700 further includes conveying a signal in a communication resource, wherein the corresponding determined channel characteristics of the communication resource for a first receive beam assumption among a plurality of receive beam assumptions are measured channel characteristics associated with the signal. In some aspects, the corresponding determined channel characteristics of the communication resource for a second receive beam assumption among a plurality of receive beam assumptions are predictions associated with the signal.

[0206] In some respects, the corresponding channel characteristics for communication resources include CQI, SINR, RSRP, RSRQ, or combinations thereof.

[0207] In some respects, method 1700 also includes obtaining an indication of whether the user equipment is capable of predicting the channel characteristics of communication resources. For example, network entities can obtain this indication via capability information, as described herein. Figure 15 As described.

[0208] In some aspects, method 1700 further includes a communication (e.g., transmission or acquisition) indication that, for each of a plurality of receive beam assumptions, indicates whether a corresponding determined channel characteristic of the communication resource for that receive beam assumption is predicted or measured. In some aspects, the indication that, for each of the plurality of receive beam assumptions, the corresponding determined channel characteristic of the communication resource for that receive beam assumption is predicted or measured includes: one or more identifiers of one or more of the plurality of receive beam assumptions for which the corresponding determined channel characteristic of the communication resource is measured. In some aspects, the indication that, for each of the plurality of receive beam assumptions, the corresponding determined channel characteristic of the communication resource is predicted or measured includes: a resource-specific indication that, for each of the plurality of receive beam assumptions, the corresponding determined channel characteristic of the communication resource is measured.

[0209] In some respects, the determined channel characteristic with the lowest value among the corresponding determined channel characteristics of multiple receive beam assumptions is measured, and the corresponding determined channel characteristic without the lowest value is predicted. As for... Figure 8 For example, the channel characteristic associated with DL-RX hypothesis #1 can be a minimum value and is measured for each of the corresponding communication resources, and other channel characteristics of other receive beam assumptions can be predicted, for example, via signal measurements obtained using DL-RX hypothesis #1. It should be noted that selecting a channel characteristic with the minimum value to be measured is merely an example, and any other criteria used for selecting the measured or predicted channel characteristics can be used as a supplement to or alternative to the minimum value criterion.

[0210] In some respects, method 1700 also includes obtaining an indication of the maximum number of receive beam assumptions. The maximum number of receive beam assumptions may indicate the maximum number of receive beam assumptions that the UE can report in a report used for channel state feedback.

[0211] In some respects, method 1700 also includes obtaining an indication of the number of receive beam assumptions to be used for reporting channel characteristic information in the feedback. The number of receive beam assumptions may indicate the total number of receive beam assumptions present in the report of channel state feedback.

[0212] In some respects, method 1700 also includes obtaining an indication of one or more sets of receive beam parameters that the user equipment can use to report channel state feedback.

[0213] In some respects, method 1700 also includes transmitting an indication of one or more sets of receive beam parameters to be used for one or more of the multiple receive beam assumptions.

[0214] In some respects, method 1700 also includes obtaining an indication of one or more sets of receive beam parameters for one or more of the multiple receive beam assumptions.

[0215] In some respects, method 1700 also includes transmitting indications of one or more limits for channel characteristic information to be used in reporting feedback for one or more communication resources, for example, as described herein. Figure 10 As described. In some aspects, one or more limit values ​​indicate one or more absolute limit values ​​with respect to the channel characteristic information to be used for reporting feedback. In some aspects, one or more limit values ​​indicate one or more differential limit values ​​with respect to the differential values ​​between the channel characteristic information to be used for reporting feedback. In some aspects, the indication of the corresponding determined channel characteristics of the communication resource includes values ​​of one or more limit values ​​(e.g., code point 1008) indicating that the corresponding determined channel characteristics do not satisfy the receive beam assumption among a plurality of receive beam assumptions.

[0216] In some respects, for a first receive beam assumption among a plurality of receive beam assumptions, the indication of corresponding determined channel characteristics for communication resources for the first receive beam assumption includes an indication of an absolute quantization value, and for a second receive beam assumption among a plurality of receive beam assumptions, the indication of corresponding determined channel characteristics for communication resources for the second receive beam assumption includes an indication of a differential quantization value relative to the absolute quantization value, for example, as described herein regarding Figure 11A , Figure 11B , Figure 12A , Figure 12B and / or Figure 13 As described.

[0217] In some respects, the instructions to provide feedback are received via one or more of the following: Radio Resource Control (RRC) signaling, Media Access Control (MAC) signaling, Downlink Control Information (DCI), Sidelink Control Information (SCI), or System Information.

[0218] In some aspects, method 1700 also includes a configuration for transmitting TCI states, which associates the TCI states with at least one of one or more communication resources and at least one receive beam assumption, for example, as described herein. Figure 14 As described.

[0219] In some aspects, at least one receive beam assumption includes multiple receive beam assumptions, and method 1700 further includes, for example, transmitting an indication of the TCI state via MAC-CE and / or DCI, the indication of the TCI state including an indication of one or more of the multiple receive beam assumptions.

[0220] In some aspects, at least one receive beam assumption includes multiple receive beam assumptions, and method 1700 further includes, for example, transmitting an indication to switch to TCI state via DCI, the indication to switch to TCI state including an indication for at least one of the one or more receive beam assumptions.

[0221] In some aspects, at least one receive beam assumption includes multiple receive beam assumptions, at least one of one or more communication resources includes multiple communication resources, and method 1700 further includes transmitting an indication of a TCI state, the indication of the TCI state for each of the multiple communication resources including a corresponding indication for one or more receive beam assumptions among the multiple receive beam assumptions (e.g., for a multi-TRP scenario).

[0222] In some aspects, method 1700 further includes transmitting an indication of activation of a TCI state at the user equipment, wherein the report is a time-relevant (e.g., recently reported) report obtained by the device, and the plurality of receive beam assumptions includes at least one receive beam assumption. In some aspects, method 1700 further includes communicating with the user equipment based on the activated TCI state.

[0223] In some respects, method 1700 or any aspect thereof may be made by means of a device (such as...) Figure 19 The communication device 1900 performs the operation, and the device includes various components operable to, configured to, or adapted to perform the method 1700. The communication device 1900 is described in further detail below.

[0224] It should be noted that Figure 17 This is merely one example of a method, and other methods that include fewer, additional, or alternative operations may also be consistent with this disclosure.

[0225] Example communication device Figure 18 Various aspects of the example communication device 1800 are described. In some aspects, the communication device 1800 is user equipment, such as those mentioned above. Figure 1 and Figure 3 The UE 104 described.

[0226] Communication device 1800 includes a processing system 1805 coupled to a transceiver 1875 (e.g., a transmitter and / or receiver). Transceiver 1875 is configured to transmit and receive signals for communication device 1800 via antenna 1880, such as the various signals described herein. Processing system 1805 may be configured to perform processing functions of communication device 1800, including processing signals received by and / or to be transmitted by communication device 1800.

[0227] Processing system 1805 includes one or more processors 1810. In various aspects, the one or more processors 1810 may represent one or more of a receive processor 358, a transmit processor 364, a TX MIMO processor 366, and / or a controller / processor 380, as per [reference to...]. Figure 3 As described. One or more processors 1810 are coupled to a computer-readable medium / memory 1840 via a bus 1870. In some aspects, the computer-readable medium / memory 1840 is configured to store processor-executable instructions (e.g., computer-executable code) that, when executed by one or more processors 1810, enable one or more processors 1810 to perform and cause the one or more processors to perform actions related to... Figure 16 The described method 1600 or any aspect thereof, including regarding Figure 16 Any additional operations described. Note that references to processors performing the functions of communication device 1800 may include one or more processors, such as performing the functions of communication device 1800 in a distributed manner.

[0228] In the depicted example, computer-readable medium / memory 1840 stores code 1845 for receiving, code 1850 for transmitting, code 1855 for prediction, code 1860 for measurement, and code 1865 for communication. Processing of codes 1845 to 1865 enables communication device 1800 to perform and allow the communication device to perform actions related to... Figure 16 The method described is 1600 or any aspect thereof.

[0229] One or more processors 1810 include circuitry configured to implement (e.g., execute) code stored in computer-readable medium / memory 1840, including circuitry 1815 for receiving, circuitry 1820 for transmitting, circuitry 1825 for prediction, circuitry 1830 for measurement, and circuitry 1835 for communication. Processing using circuitry 1815 to 1835 enables communication device 1800 to perform and allow the communication device to perform actions related to... Figure 16 The method described is 1600 or any aspect thereof.

[0230] More generally, components used for conveying, sending, transmitting, or outputting for transmission may include Figure 3 The UE104 illustrated includes a transceiver 354, an antenna 352, a transmit processor 364, a TX MIMO processor 366, and / or a controller / processor 380. Figure 18 The transceiver 1875 and / or antenna 1880 of the communication equipment 1800 in the middle. Figure 18One or more processors 1810 of the communication device 1800. Components for transmitting, receiving, or acquiring may include... Figure 3 The UE 104 illustrated includes a transceiver 354, an antenna 352, a receiver processor 358, and / or a controller / processor 380. Figure 18 The transceiver 1875 and / or antenna 1880 of the communication equipment 1800 in the middle. Figure 18 The communication device 1800 includes one or more processors 1810. Components for prediction or measurement may include... Figure 3 The UE 104 illustrated includes a transceiver 354, an antenna 352, a receiver processor 358, an AI processor 370, and / or a controller / processor 380. Figure 18 The transceiver 1875 and / or antenna 1880 of the communication equipment 1800 in the middle. Figure 18 One or more processors 1810 of the communication device 1800 in the middle.

[0231] Figure 19 Various aspects of the example communication device 1900 are described. In some aspects, the communication device 1900 is a network entity, such as... Figure 1 and Figure 3 BS 102 or as about Figure 2 The decomposed base station under discussion.

[0232] Communication device 1900 includes a processing system 1905 coupled to a transceiver 1955 (e.g., a transmitter and / or receiver) and / or a network interface 1965. Transceiver 1955 is configured to transmit and receive signals for communication device 1900 via antenna 1960, such as various signals as described herein. Network interface 1965 is configured to transmit and receive signals for communication device 1900 via a communication link (such as those described herein). Figure 2 The described backhaul link, midhaul link, and / or fronthaul link receive and transmit signals for the communication device 1900. The processing system 1905 can be configured to perform the processing functions of the communication device 1900, including processing signals received by the communication device 1900 and / or to be transmitted by the communication device.

[0233] Processing system 1905 includes one or more processors 1910. In various aspects, the one or more processors 1910 may represent one or more of a receive processor 338, a transmit processor 320, a TX MIMO processor 330, and / or a controller / processor 340, as per [reference to...]. Figure 3As described. One or more processors 1910 are coupled to a computer-readable medium / memory 1930 via a bus 1950. In some aspects, the computer-readable medium / memory 1930 is configured to store processor-executable instructions (e.g., computer-executable code) that, when executed by one or more processors 1910, enable one or more processors 1910 to perform and cause the one or more processors to perform actions related to... Figure 17 The described method 1700 or any aspect thereof, including regarding Figure 17 Any additional operations described. Note that references to the processor of the communication device 1900 performing the function may include one or more processors of the communication device 1900, such as performing the function in a distributed manner.

[0234] In the depicted example, computer-readable medium / memory 1930 stores code 1935 for transmission, code 1940 for acquisition, and code 1945 for communication. Processing of codes 1935 to 1945 enables communication device 1900 to execute and perform actions related to... Figure 17 The method described is 1700 or any aspect thereof.

[0235] One or more processors 1910 include circuitry configured to implement (e.g., execute) code stored in computer-readable medium / memory 1930, including circuitry 1915 for transmission, circuitry 1920 for acquisition, and circuitry 1925 for communication. Processing using circuitry 1915 to 1925 enables communication device 1900 to perform and allow the communication device to perform actions related to… Figure 17 The method described is 1700 or any aspect thereof.

[0236] More generally, components used for conveying, sending, transmitting, or outputting for transmission may include Figure 3 The BS102 illustrated includes a transceiver 332, an antenna 334, a transmit processor 320, a TX MIMO processor 330, and / or a controller / processor 340. Figure 19 The communication equipment in 1900, transceivers in 1955 and / or antennas in 1960 and / or Figure 19 One or more processors 1910 of the communication device 1900. Components for transmitting, receiving, or acquiring may include... Figure 3 The BS 102 illustrated includes transceiver 332, antenna 334, receiver processor 338, and / or controller / processor 340. Figure 19 The communication equipment in 1900, transceivers in 1955 and / or antennas in 1960 and / or Figure 19 One or more processors 1910 in the communication device 1900.

[0237] Example Terms Specific implementation examples are described in the following numbered clauses: Clause 1: A method for wireless communication by a device, the method comprising: receiving an indication to provide feedback to a network entity, the feedback including channel characteristic information for one or more communication resources including communication resources; and transmitting a report including an indication of corresponding determined channel characteristics for each of a plurality of receive beam assumptions for the communication resources.

[0238] Clause 2: According to the method described in Clause 1, each of the plurality of receive beam assumptions is associated with a different set of receive beam parameters.

[0239] Clause 3: The method according to Clause 2, wherein each set of received beam parameters includes one or more of the following: beamwidth, one or more antenna gains, one or more antenna phases, angle of arrival, angle of departure, number of antenna elements, antenna panel identifier, or number of antenna panels.

[0240] Clause 4: The method according to Clause 3, wherein the plurality of receive beam assumptions includes a first receive beam assumption associated with a first set of receive beam parameters and a second receive beam assumption associated with a second set of receive beam parameters that is different from the first set of receive beam parameters.

[0241] Clause 5: The method according to any one of Clauses 1 to 4, wherein the plurality of receive beam assumptions includes a first receive beam assumption associated with a first receive beam having a first beamwidth and a second receive beam assumption associated with a second receive beam having a second beamwidth different from the first beamwidth.

[0242] Clause 6: The method according to any one of Clauses 1 to 5, the method further comprising: predicting the corresponding determined channel characteristics of the communication resources for the receive beam assumption among the plurality of receive beam assumptions.

[0243] Clause 7: The method according to any one of Clauses 1 to 6, the method further comprising: using a first receiving beam associated with a first receiving beam assumption among the plurality of receiving beam assumptions to measure a signal transmitted in the communication resource to determine the corresponding determined channel characteristics of the communication resource for the first receiving beam assumption.

[0244] Clause 8: The method according to Clause 7 further comprises: predicting, at least in part, the corresponding determined channel characteristics of the communication resource for a second receive beam hypothesis among the plurality of receive beam hypotheses based on the signal measured using the first receive beam hypothesis.

[0245] Clause 9: The method according to Clause 8, wherein the corresponding determination channel characteristics of the communication resources include CQI, SINR, RSRP, RSRQ or combinations thereof.

[0246] Clause 10: The method according to any one of Clauses 1 to 9, the method further comprising: transmitting an indication of whether the apparatus is capable of predicting the channel characteristics of communication resources.

[0247] Clause 11: The method according to any one of Clauses 1 to 10, the method further comprising: conveying an indication, the indication indicating for each of the plurality of receive beam assumptions whether the corresponding determination of the channel characteristics of the communication resource for the receive beam assumption is predicted or measured.

[0248] Clause 12: The method according to Clause 11, wherein the indication for each of the plurality of receive beam assumptions that the corresponding determined channel characteristic of the communication resource for the receive beam assumption is predicted or measured includes: one or more identifiers of one or more of the plurality of receive beam assumptions for which the corresponding one or more determined channel characteristics of the communication resource are measured.

[0249] Clause 13: The method according to Clause 11, wherein the indication for each of the plurality of receive beam assumptions indicating whether the corresponding determined channel characteristic of the communication resource is predicted or measured includes: a resource-specific indication indicating for each of the plurality of receive beam assumptions that the corresponding determined channel characteristic of the communication resource is measured.

[0250] Clause 14: The method according to any one of Clauses 1 to 13, wherein: the determined channel characteristic having the lowest value among the corresponding determined channel characteristics of the plurality of received beam assumptions is measured, and the corresponding determined channel characteristic not having the lowest value is predicted.

[0251] Clause 15: The method according to any one of Clauses 1 to 14, the method further comprising: transmitting an indication of a maximum number of received beam assumptions.

[0252] Clause 16: The method according to any one of Clauses 1 to 15, the method further comprising: receiving an indication of the number of receive beam assumptions to be used for reporting the channel characteristic information.

[0253] Clause 17: The method according to any one of Clauses 1 to 16, the method further comprising: transmitting an indication of one or more sets of receiving beam parameters that the device can use.

[0254] Clause 18: The method according to any one of Clauses 1 to 17, the method further comprising: receiving an indication of one or more sets of receive beam parameters to be used for one or more of the plurality of receive beam assumptions.

[0255] Clause 19: The method according to any one of Clauses 1 to 18, the method further comprising: transmitting an indication of one or more sets of receive beam parameters for one or more of the plurality of receive beam assumptions.

[0256] Clause 20: The method according to any one of Clauses 1 to 19, the method further comprising: receiving an indication of one or more limits regarding channel characteristic information to be used for reporting feedback for the one or more communication resources.

[0257] Clause 21: The method according to Clause 20, wherein the one or more limits indicate one or more absolute limits with respect to the channel characteristic information to be used for reporting the feedback.

[0258] Clause 22: The method according to Clause 20, wherein the one or more limits indicate one or more differential limits relating to the differential values ​​between channel characteristic information to be used for reporting the feedback.

[0259] Clause 23: The method according to Clause 20, wherein the indication of the corresponding determined channel characteristic of the communication resource includes a value indicating that the corresponding determined channel characteristic does not satisfy one or more limits of the receive beam assumption among the plurality of receive beam assumptions.

[0260] Clause 24: The method according to any one of Clauses 1 to 23, wherein: for a first receive beam hypothesis among the plurality of receive beam hypotheses, the indication of the corresponding determined channel characteristics of the communication resource for the first receive beam hypothesis includes a value indicating an absolute quantization value, and for a second receive beam hypothesis among the plurality of receive beam hypotheses, the indication of the corresponding determined channel characteristics of the communication resource for the second receive beam hypothesis includes a value indicating a differential quantization value relative to the absolute quantization value.

[0261] Clause 25: The method according to any one of Clauses 1 to 24, wherein the indication providing the feedback is received via one or more of the following: radio resource control signaling, media access control signaling, downlink control information, sidelink control information, or system information.

[0262] Clause 26: The method according to any one of Clauses 1 to 25, the method further comprising: a configuration for receiving a TCI state, the configuration of the TCI state associating the TCI state with at least one of the one or more communication resources and at least one receive beam assumption.

[0263] Clause 27: The method according to Clause 26, wherein: the at least one receive beam hypothesis includes a plurality of receive beam hypotheses, and the method further includes receiving an indication of the TCI state, the indication of the TCI state including an indication of one or more of the plurality of receive beam hypotheses.

[0264] Clause 28: The method according to Clause 27, wherein: the at least one receive beam hypothesis includes a plurality of receive beam hypotheses, and the method further includes receiving an indication to switch to the TCI state, the indication to switch to the TCI state including an indication for at least one of the one or more receive beam hypotheses.

[0265] Clause 29: The method according to Clause 26, wherein: the at least one receive beam hypothesis includes a plurality of receive beam hypotheses, the at least one of the one or more communication resources includes a plurality of communication resources, and the method further includes receiving an indication of the TCI state, the indication of the TCI state for each of the plurality of communication resources including a corresponding indication for one or more of the plurality of receive beam hypotheses.

[0266] Clause 30: The method according to Clause 26 further includes: receiving an indication to activate the TCI state; and communicating using the receiving beam of the device associated with one of the plurality of receiving beam assumptions based on the report being the most recent report transmitted by the device in time.

[0267] Clause 31: A method for wireless communication by a device, the method comprising: transmitting an indication to provide feedback to the device, the feedback including channel characteristic information for one or more communication resources including communication resources; and obtaining a report including an indication of corresponding determined channel characteristics for each of a plurality of receive beam assumptions for the communication resources.

[0268] Clause 32: According to the method of Clause 31, each of the plurality of receive beam assumptions is associated with a different set of receive beam parameters.

[0269] Clause 33: The method according to Clause 32, wherein each set of received beam parameters includes one or more of the following: beamwidth, one or more antenna gains, one or more antenna phases, angle of arrival, angle of departure, number of antenna elements, antenna panel identifier, or number of antenna panels.

[0270] Clause 34: The method according to Clause 33, wherein the plurality of receive beam assumptions includes a first receive beam assumption associated with a first set of receive beam parameters and a second receive beam assumption associated with a second set of receive beam parameters that is different from the first set of receive beam parameters.

[0271] Clause 35: The method according to any one of Clauses 31 to 34, wherein the plurality of receive beam assumptions includes a first receive beam assumption associated with a first receive beam having a first beamwidth and a second receive beam assumption associated with a second receive beam having a second beamwidth different from the first beamwidth.

[0272] Clause 36: The method according to any one of Clauses 31 to 35, wherein the corresponding determined channel characteristics of the communication resources for the receive beam assumption among the plurality of receive beam assumptions are predicted.

[0273] Clause 37: The method according to any one of Clauses 31 to 36, the method further comprising: transmitting a signal in the communication resource, wherein the corresponding determined channel characteristic of the communication resource for a first receive beam assumption of the plurality of receive beam assumptions is a measured channel characteristic associated with the signal.

[0274] Clause 38: The method according to Clause 37, wherein the corresponding determined channel characteristics of the communication resources for a second receive beam assumption among the plurality of receive beam assumptions are predictions associated with the signal.

[0275] Clause 39: The method according to Clause 38, wherein the corresponding determination channel characteristics of the communication resources include CQI, SINR, RSRP, RSRQ, or combinations thereof.

[0276] Clause 40: The method according to any one of Clauses 31 to 39, the method further comprising: obtaining an indication of whether the user equipment is capable of predicting the channel characteristics of communication resources.

[0277] Clause 41: The method according to any one of Clauses 31 to 40, the method further comprising: conveying an indication, the indication indicating for each of the plurality of receive beam assumptions whether the corresponding determination of the channel characteristics of the communication resource for the receive beam assumption is predicted or measured.

[0278] Clause 42: The method according to Clause 41, wherein the indication for each of the plurality of receive beam assumptions indicating whether the corresponding determined channel characteristic of the communication resource for the receive beam assumption is predicted or measured includes: one or more identifiers of one or more of the plurality of receive beam assumptions for which the corresponding one or more determined channel characteristics of the communication resource are measured.

[0279] Clause 43: The method according to Clause 41, wherein the indication for each of the plurality of receive beam assumptions indicating whether the corresponding determined channel characteristic of the communication resource is predicted or measured includes: a resource-specific indication indicating for each of the plurality of receive beam assumptions that the corresponding determined channel characteristic of the communication resource is measured.

[0280] Clause 44: The method according to any one of Clauses 31 to 43, wherein: the determined channel characteristic having the lowest value among the corresponding determined channel characteristics of the plurality of received beam assumptions is measured, and the corresponding determined channel characteristic not having the lowest value is predicted.

[0281] Clause 45: The method according to any one of Clauses 31 to 44, the method further comprising: obtaining an indication of the maximum number of received beam assumptions.

[0282] Clause 46: The method according to any one of Clauses 31 to 45, the method further comprising: obtaining an indication of the number of receive beam assumptions to be used for reporting the channel characteristic information.

[0283] Clause 47: The method according to any one of Clauses 31 to 46 further includes: obtaining an indication of one or more sets of receive beam parameters that can be used by the user equipment.

[0284] Clause 48: The method according to any one of Clauses 31 to 47, the method further comprising: transmitting an indication of one or more sets of receive beam parameters to be used for one or more of the plurality of receive beam assumptions.

[0285] Clause 49: The method according to any one of Clauses 31 to 48, the method further comprising: obtaining an indication of one or more sets of receive beam parameters for one or more of the plurality of receive beam assumptions.

[0286] Clause 50: The method according to any one of Clauses 31 to 49, the method further comprising: transmitting an indication of one or more limits regarding channel characteristic information to be used for reporting feedback for the one or more communication resources.

[0287] Clause 51: The method according to Clause 50, wherein the one or more limits indicate one or more absolute limits with respect to the channel characteristic information to be used for reporting the feedback.

[0288] Clause 52: The method according to Clause 50, wherein the one or more limits indicate one or more differential limits regarding the differential values ​​between channel characteristic information to be used for reporting the feedback.

[0289] Clause 53: The method according to Clause 50, wherein the indication of the corresponding determined channel characteristic of the communication resource includes a value indicating that the corresponding determined channel characteristic does not satisfy one or more limits of the receive beam assumption among the plurality of receive beam assumptions.

[0290] Clause 54: The method according to any one of Clauses 31 to 53, wherein: for a first receive beam hypothesis among the plurality of receive beam hypotheses, the indication of the corresponding determined channel characteristics of the communication resource for the first receive beam hypothesis includes a value indicating an absolute quantization value, and for a second receive beam hypothesis among the plurality of receive beam hypotheses, the indication of the corresponding determined channel characteristics of the communication resource for the second receive beam hypothesis includes a value indicating a differential quantization value relative to the absolute quantization value.

[0291] Clause 55: The method according to any one of Clauses 31 to 54, wherein the indication providing the feedback is received via one or more of the following: radio resource control signaling, media access control signaling, downlink control information, sidelink control information, or system information.

[0292] Clause 56: The method according to any one of Clauses 31 to 55, the method further comprising: transmitting a configuration of a TCI state, the configuration of the TCI state associating the TCI state with at least one of the one or more communication resources and at least one receive beam assumption.

[0293] Clause 57: The method according to Clause 56, wherein: the at least one receive beam hypothesis includes a plurality of receive beam hypotheses, and the method further includes transmitting an indication of the TCI state, the indication of the TCI state including an indication of one or more of the plurality of receive beam hypotheses.

[0294] Clause 58: The method according to Clause 57, wherein: the at least one receive beam hypothesis includes a plurality of receive beam hypotheses, and the method further includes transmitting an indication to switch to the TCI state, the indication to switch to the TCI state including an indication for at least one of the one or more receive beam hypotheses.

[0295] Clause 59: The method according to Clause 56, wherein: the at least one receive beam assumption includes a plurality of receive beam assumptions, the at least one of the one or more communication resources includes a plurality of communication resources, and the method further includes transmitting an indication of the TCI state, the indication of the TCI state for each of the plurality of communication resources including a corresponding indication for one or more of the plurality of receive beam assumptions.

[0296] Clause 60: The method according to Clause 56 further includes: transmitting an indication to activate the TCI state at the user equipment, wherein the report is a time-updated report obtained by the device, and the plurality of receive beam assumptions include the at least one receive beam assumption; and communicating with the user equipment according to the activated TCI state.

[0297] Clause 61: One or more means comprising: one or more memories including executable instructions; and one or more processors configured to execute the executable instructions and cause the one or more means to perform the method according to any one of Clauses 1 to 60.

[0298] Clause 62: One or more apparatuses, said apparatuses comprising components for performing the method according to any one of Clauses 1 to 60.

[0299] Clause 63: One or more non-transitory computer-readable media, the one or more non-transitory computer-readable media comprising executable instructions that, when executed by one or more processors of one or more devices, cause the one or more devices to perform the method according to any one of Clauses 1 to 60.

[0300] Clause 64: One or more computer program products embodied on one or more computer-readable storage media, the one or more computer-readable storage media including code for performing the method according to any one of Clauses 1 to 60.

[0301] Additional Notes The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. The examples discussed herein do not limit the scope, applicability, or aspects set forth in the claims. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. For example, the function and arrangement of the elements discussed may be changed without departing from the scope of this disclosure. Various processes or components may be omitted, substituted, or added as appropriate in various examples. For example, the described methods may be performed in a different order than described, and various actions may be added, omitted, or combined. Furthermore, features described with respect to some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement an apparatus or practice. Moreover, the scope of this disclosure is intended to cover such apparatuses or methods practiced using other structures, functionalities, or structures and functionalities that complement or replace the various aspects of this disclosure set forth herein. It should be understood that any aspect of this disclosure disclosed herein may be embodied by one or more elements of these claims.

[0302] The various exemplary logic blocks, modules, and circuits described in this disclosure can be implemented or executed using a general-purpose processor, AI processor, digital signal processor (DSP), ASIC, field-programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic element, discrete hardware component, or any combination thereof designed to perform the functions described herein. While the general-purpose processor may be a microprocessor, in alternative embodiments, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors working in conjunction with a DSP core, a system-on-a-chip (SoC), or any other such configuration.

[0303] As used in this article, the phrase “at least one of the items” refers to any combination of these items, including a single member. As an example, “at least one of a, b, or c” is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbb, cc, and ccc, or any other ordering of a, b, and c).

[0304] As used herein, the term "determine" encompasses a wide variety of actions. For example, "determine" can include calculation, operation, processing, deduction, investigation, lookup (e.g., searching in a table, database, or other data structure), assertion, etc. Furthermore, "determine" can include receiving (e.g., receiving information) and accessing (e.g., accessing data in memory). Additionally, "determine" can include parsing, selecting, picking, building, etc.

[0305] As used herein, unless otherwise stated, “coupled to” and “coupled with” generally encompass both direct and indirect coupling (e.g., including intermediate aspects of coupling). For example, stating that a processor is coupled to memory allows for direct coupling or coupling via an intermediate aspect such as a bus.

[0306] The methods disclosed herein include one or more actions for implementing the methods. These actions may be interchanged without departing from the scope of the claims. In other words, unless a specific order of actions is specified, the order and / or use of a particular action may be modified without departing from the scope of the claims. Furthermore, the various operations of the methods described above may be performed by any suitable component capable of performing the corresponding function. This component may include various hardware and / or software components and / or modules, including but not limited to circuits, application-specific integrated circuits (ASICs), or processors.

[0307] The following claims are not intended to be limited to the aspects shown herein, but should be given the full scope consistent with the language of the claims. References to singular elements are not intended to mean “only one” (unless specifically stated as “only one”), but rather “one or more”. Unless otherwise specified, definite articles (e.g., “the” or “described”) subsequently used with an element (e.g., “processor”) are not intended to give that element a singular meaning (e.g., “only one”). For example, unless otherwise specified, references to elements (e.g., “processor”, “controller”, “memory”, “transceiver”, “antenna”, “the processor”, “the controller”, “the memory”, “the transceiver”, “the antenna”, etc.) should be understood to refer to one or more elements (e.g., “one or more processors”, “one or more controllers”, “one or more memories”, “a plurality of transceivers”, etc.). The terms “set” and “group” are intended to include one or more elements and may be used interchangeably with “one or more”. In the case of references to one or more elements performing a function (e.g., steps of a method), one element may perform all the functions, or more than one element may collectively perform those functions. When more than one element performs these functions together, each function does not need to be performed by every single element (e.g., different functions can be performed by different elements), and / or each function does not need to be performed by only one element as a whole (e.g., different elements can perform different sub-functions of a function). Similarly, when referring to one or more elements configured to cause another element (e.g., a device) to perform a function, one element may be configured to cause another element to perform all functions, or more than one element may be jointly configured to cause another element to perform these functions. Unless otherwise specifically stated, the term "some" refers to one or more. All structural and functional equivalents of the various aspects described throughout this disclosure that are currently or hereafter known to those skilled in the art are intended to be covered by the claims. Furthermore, nothing disclosed herein is intended to be offered to the public, whether or not such disclosure is explicitly recited in the claims.

Claims

1. An apparatus configured for wireless communication, the apparatus comprising: One or more memories, the one or more memories including processor-executable instructions; and One or more processors, the one or more processors being configured to execute processor-executable instructions and cause the device to: Receive an instruction to provide feedback to a network entity, the feedback including channel characteristic information for one or more communication resources, including communication resources, and The report is transmitted, and for each of a plurality of receive beam assumptions, the report includes an indication of the corresponding determined channel characteristics of the communication resource.

2. The apparatus of claim 1, wherein each of the plurality of receive beam assumptions is associated with a different set of receive beam parameters.

3. The apparatus of claim 1, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: The signal transmitted in the communication resource is measured using a first receive beam associated with a first receive beam hypothesis among the plurality of receive beam hypotheses, in order to determine the corresponding determined channel characteristics of the communication resource for the first receive beam hypothesis.

4. The apparatus of claim 3, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: The corresponding determined channel characteristics of the communication resources are predicted, at least in part, based on the signal measured using the first receive beam assumption.

5. The apparatus of claim 1, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: The instruction conveys an indication, for each of the plurality of receive beam assumptions, indicating whether the corresponding determined channel characteristics for the communication resources for that receive beam assumption are predicted or measured.

6. The apparatus according to claim 1, wherein: The determined channel characteristic with the lowest value among the corresponding determined channel characteristics of the plurality of received beam assumptions is measured, and The corresponding determined channel characteristic that does not have the minimum value is predicted.

7. The apparatus of claim 1, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Transmits an indication of the maximum number of received beam assumptions.

8. The apparatus of claim 1, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Receive an indication of the number of receive beam assumptions to be used for reporting the channel characteristic information in the feedback.

9. The apparatus of claim 1, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Transmits an indication of one or more sets of receive beam parameters that the device can use.

10. The apparatus of claim 1, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Receive an indication of one or more sets of receive beam parameters to be used for one or more of the plurality of receive beam assumptions.

11. The apparatus of claim 1, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Transmits an indication of one or more sets of receive beam parameters for one or more of the plurality of receive beam assumptions.

12. The apparatus of claim 1, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Receive an indication of one or more limits regarding channel characteristic information to be used for reporting feedback for the one or more communication resources.

13. The apparatus according to claim 1, wherein: For a first receive beam hypothesis among the plurality of receive beam hypotheses, the indication of the corresponding determined channel characteristics of the communication resources for the first receive beam hypothesis includes a value indicating an absolute quantization value, and For the second receive beam hypothesis among the plurality of receive beam hypotheses, the indication of the corresponding determined channel characteristics of the communication resource for the second receive beam hypothesis includes an indication of a value of a differential quantization value relative to the absolute quantization value.

14. The apparatus of claim 1, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: The configuration of the receive transmit configuration indicator (TCI) state associates the TCI state with at least one of the one or more communication resources and at least one receive beam assumption.

15. An apparatus configured for wireless communication, the apparatus comprising: One or more memories, the one or more memories including processor-executable instructions; and One or more processors, the one or more processors being configured to execute processor-executable instructions and cause the device to: The transmission provides an instruction to the device to provide feedback, the feedback including channel characteristic information for one or more communication resources, including communication resources, and A report is obtained, which includes an indication of the corresponding determined channel characteristics of the communication resource for each of a plurality of receive beam assumptions.

16. The apparatus of claim 15, wherein each of the plurality of receive beam assumptions is associated with a different set of receive beam parameters.

17. The apparatus of claim 15, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: A signal is transmitted in the communication resource, wherein the corresponding determined channel characteristic of the communication resource for a first receive beam assumption among the plurality of receive beam assumptions is a measured channel characteristic associated with the signal.

18. The apparatus of claim 17, wherein the corresponding determined channel characteristics of the communication resources for a second receive beam hypothesis among the plurality of receive beam hypotheses are predictions associated with the signal.

19. The apparatus of claim 15, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: The instruction conveys an indication, for each of the plurality of receive beam assumptions, indicating whether the corresponding determined channel characteristics for the communication resources for that receive beam assumption are predicted or measured.

20. The apparatus of claim 15, wherein: The determined channel characteristic with the lowest value among the corresponding determined channel characteristics of the plurality of received beam assumptions is measured, and The corresponding determined channel characteristic that does not have the minimum value is predicted.

21. The apparatus of claim 15, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Obtain an indication of the maximum number of receive beam assumptions.

22. The apparatus of claim 15, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Obtain an indication of the number of receive beam assumptions to be used for reporting the channel characteristic information.

23. The apparatus of claim 15, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Obtain an indication of one or more sets of receive beam parameters that can be used by the user equipment.

24. The apparatus of claim 15, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Transmits an indication of one or more sets of receive beam parameters to be used for one or more of the plurality of receive beam assumptions.

25. The apparatus of claim 15, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Obtain an indication of one or more sets of receive beam parameters for one or more of the plurality of receive beam assumptions.

26. The apparatus of claim 15, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: Transmits indications of one or more limits for channel characteristic information to be used in reporting feedback for the one or more communication resources.

27. The apparatus according to claim 15, wherein: For a first receive beam hypothesis among the plurality of receive beam hypotheses, the indication of the corresponding determined channel characteristics of the communication resources for the first receive beam hypothesis includes a value indicating an absolute quantization value, and For the second receive beam hypothesis among the plurality of receive beam hypotheses, the indication of the corresponding determined channel characteristics of the communication resource for the second receive beam hypothesis includes an indication of a value of a differential quantization value relative to the absolute quantization value.

28. The apparatus of claim 15, wherein the one or more processors are configured to execute processor-executable instructions and further cause the apparatus to: The configuration of the Transmit Configuration Indicator (TCI) state is transmitted, the configuration of the TCI state associating the TCI state with at least one of the one or more communication resources and at least one receive beam assumption.

29. A method for wireless communication by a device, the method comprising: Receive an instruction to provide feedback to a network entity, the feedback including channel characteristic information for one or more communication resources, including communication resources, and The report is transmitted, and for each of a plurality of receive beam assumptions, the report includes an indication of the corresponding determined channel characteristics of the communication resource.

30. A method for wireless communication by a device, the method comprising: The transmission provides an instruction to the device to provide feedback, the feedback including channel characteristic information for one or more communication resources, including communication resources, and A report is obtained, which includes an indication of the corresponding determined channel characteristics of the communication resource for each of a plurality of receive beam assumptions.

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