Decoupling downlink and uplink beam management

Abstract

Certain aspects of the present disclosure provide techniques for decoupling downlink (DL) and uplink (UL) beam management. In an exemplary method, a user equipment obtains an indication for reporting beam quality of a decoupled uplink (UL) beam and downlink (DL) beam, and reports beam quality of at least one of the UL beam or the DL beam according to the indication.

Description

Background Art

[0001] Related technologies

[0002] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts or other similar types of services. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available wireless communication system resources with those users.

[0003] Although wireless communication systems have made tremendous technical progress over the years, challenges still exist. For example, complex and dynamic environments can still attenuate or block signals between wireless transmitters and wireless receivers. Therefore, there is a continuous desire to improve the technical performance of wireless communication systems, including, for example: improving the speed and data carrying capacity of communications, improving the efficiency of using shared communication media, reducing the power used by transmitters and receivers when performing communications, improving the reliability of wireless communications, avoiding redundant transmission and / or reception and related processing, improving the coverage area of ​​wireless communications, increasing the number and types of devices that can access wireless communication systems, increasing the ability of different types of devices to communicate with each other, increasing the number and types of wireless communication media available for use, etc. Therefore, there is a need to further improve wireless communication systems to overcome the aforementioned technical challenges and other challenges. Summary of the invention

[0004] One aspect provides a method for wireless communication by a user equipment (UE). The method includes: obtaining an indication for reporting beam quality of a decoupled uplink (UL) beam and a downlink (DL) beam; and reporting the beam quality of at least one of the UL beam or the DL beam according to the indication.

[0005] Another aspect provides a method for wireless communication by a network entity. The method includes: transmitting an indication for reporting beam quality of decoupled UL beam and DL beam; and receiving a report of beam quality of at least one of the UL beam or the DL beam according to the indication.

[0006] Other aspects provide: an apparatus operable to, configured to, or otherwise adapted to perform any one or more of the foregoing methods and / or those described elsewhere herein; a non-transitory computer-readable medium comprising instructions that, when executed by a processor of the apparatus, cause the apparatus to perform the foregoing methods and those described elsewhere herein; a computer program product embodied on a computer-readable storage medium, the computer-readable storage medium comprising: code for performing the foregoing methods and those described elsewhere herein; and / or an apparatus comprising components for performing the foregoing methods and those described elsewhere herein. By way of example, an apparatus may include a processing system, a device having a processing system, or a processing system cooperating through one or more networks.

[0007] For purposes of illustration, the following detailed description and drawings set forth certain features. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The accompanying drawings depict certain features of the various aspects described herein and should not be considered to limit the scope of the disclosure.

[0009] Figure 1 An example wireless communication network is depicted.

[0010] Figure 2 An example disaggregated base station architecture is depicted.

[0011] Figure 3 Aspects of an example base station and example user equipment are depicted.

[0012] Figure 4A , Figure 4B , Figure 4C and Figure 4D Various example aspects of data structures for a wireless communication network are described.

[0013] Figure 5A and Figure 5B An example of a user equipment (UE) communicating with a network entity via decoupled uplink (UL) and downlink (DL) beams is depicted.

[0014] Figure 6 Depicted is an example of a UE communicating with a network entity via decoupled UL and DL beams.

[0015] Figure 7 A call flow for communication in a network between a network entity and a UE is depicted.

[0016] Fig. 8A Depicted is an example timeline of a joint network and UE beam scanning beam management process based on synchronization signal blocks (SSBs).

[0017] Figure 8B Depicts in box form the UE Fig. 8A Example beam reports sent in the timeline in .

[0018] Fig.9A Depicted is an example timeline of an SSB-based P1 beam management process.

[0019] Fig. 9B Depicted Fig.9A UE, the best DL beam for SSB, and the best UL beam for SSB.

[0020] Fig. 9C Depicts in box form the UE Fig.9A Example beam reports sent in the timeline in .

[0021] Fig.10 Depicts in box form the UE Fig.9A Example beam reports sent in the timeline shown.

[0022] Fig.11A Depicted is an example timeline of the P2 beam management process.

[0023] Fig. 11B Depicted from Fig.11A UE and the UE's receive beam associated with SSB.

[0024] Fig. 11C Depicts in box form the UE Fig.11A Example of DL-only beam reports sent in the timeline.

[0025] Fig. 12A Depicted is an example timeline of the P2 beam management process.

[0026] Fig. 12B Depicted from Fig. 12A UE and the UE's receive beam associated with SSB.

[0027] Fig. 12C Depicts in box form the UE Fig. 12A Example of sending only UL beam report in the timeline.

[0028] Fig.13A Depicted is an example timeline of the P2 beam management process.

[0029] Fig. 13B Depicted from Fig.13A UE and the UE's best DL beam associated with SSB.

[0030] Fig. 13C Depicted from Fig.13AUE and the UE's best UL beam associated with SSB.

[0031] Fig.14 Depicts in box form the UE Fig.13A Example beam reports sent in the timeline of .

[0032] Fig.15A Depicted is an example timeline of the P3 beam refinement process that is not reported.

[0033] Fig. 15B Depicted from Fig.15A UE and the UE's receive beam associated with SSB.

[0034] Fig.16A Depicted is an example timeline of the P3 beam refinement process that is not reported.

[0035] Fig. 16B Depicted from Fig.16A UE and the UE's transmit beam associated with SSB.

[0036] Fig.17A Depicted is an example timeline of the P3 beam refinement process.

[0037] Fig. 17B Depicted from Fig.17A UE and the UE's receive beam associated with SSB.

[0038] Fig. 17C Depicted from Fig.17A UE and the UE's transmit beam associated with SSB.

[0039] Fig.18 A method for wireless communication is described.

[0040] Fig.19 A method for wireless communication is described.

[0041] Fig. 20 Aspects of an example communications device are depicted.

[0042] Fig.21 Aspects of an example communications device are depicted. DETAILED DESCRIPTION

[0043] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for decoupled DL and UL beam management.

[0044] In a typical wireless communication network using beamforming, a UE receives a DL signal on a DL beam and transmits a UL signal on a UL beam, both of which are selected based on the layer 1 (L1) metric of the DL beam. Therefore, the UL beam and the DL beam are transmitted along the same physical path. In some cases, the UL beam that provides excellent UL communication is not the opposite of the DL beam with the best L1 metric. For example, the DL beam may be the best DL beam for the UE, but due to the maximum allowed illumination (MPE) parameter of the UE, the UE is limited in the power level that the UE can use to transmit on the corresponding UL beam, and the UE may transmit at a higher power level on a different UL beam. For another example, the UE may save power by switching from transmitting via a narrow beam to transmitting via a wide beam, but the network chooses to transmit to the UE on a narrow beam to obtain higher DL throughput or signal quality. If the UE switches to a different beam that does not match the beam selected by the network entity, the network entity may not receive UL transmissions from the UE.

[0045] Various aspects of the present disclosure provide techniques for decoupling downlink (DL) and uplink (UL) beam management. In the provided techniques, a UE may inform a network entity that the receive and transmit beams used by the UE are different for a given network entity beam, so that the network entity will use the correct beam to receive from the UE, and the UE may transmit and receive on different beams.

[0046] By enabling the UE to transmit and receive on different beams, the throughput from the UE to the network and the reliability of communications may be improved because in some cases the UE may select a beam that improves the throughput from the UE to the network, and in other cases the UE may select a beam for UL transmission that may use a higher transmit power than a UL beam that matches a DL beam selected by a network entity. In addition, the UE may sometimes save power by selecting a UL beam that is different from a UL beam that matches a DL beam selected by a network entity.

[0047] Introduction to wireless communication networks

[0048] The techniques and methods described herein can be used in various wireless communication networks. Although various aspects may be described herein using terms commonly associated with 3G, 4G and / or 5G wireless technologies, various aspects of the present disclosure may also be applicable to other communication systems and standards not explicitly mentioned herein.

[0049] Figure 1 An example of a wireless communication network 100 is depicted in which various aspects described herein may be implemented.

[0050] In general, the wireless communication network 100 includes various network entities (alternatively, network elements or network nodes). A network entity is typically a communication device and / or a communication function performed by a communication device (e.g., user equipment (UE), base station (BS), component of a BS, server, etc.). For example, various functions of a network and various devices associated with and interacting with the network may be considered network entities. In addition, the wireless communication network 100 includes ground aspects, such as ground-based network entities (e.g., BS 102), and non-ground aspects, such as satellites 140 and aircraft 145, which may include airborne network entities (e.g., one or more BSs) capable of communicating with other network elements (e.g., ground BSs) and user equipment.

[0051] In the depicted example, the wireless communication network 100 includes a BS 102, a UE 104, and one or more core networks (such as an evolved packet core (EPC) 160 and a 5G core (5GC) network 190) that interoperate to provide communication services over various communication links (including wired links and wireless links).

[0052] Figure 1 Various example UEs 104 are depicted, which may more generally include: a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player, a camera, a game console, a tablet computer, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, an Internet of Things (IoT) device, an Always-On (AON) device, an edge processing device, or other similar devices. UE 104 may also be more generally referred to as a mobile device, a wireless device, a wireless communication device, a station, a mobile station, a subscriber station, a mobile subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a remote device, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, and other user equipment.

[0053] BS 102 wirelessly communicates with (e.g., transmits signals to or receives signals from) UE 104 via communication link 120. Communication link 120 between BS 102 and UE 104 may include uplink (UL) (also referred to as a reverse link) transmissions from UE 104 to BS 102 and / or downlink (DL) (also referred to as a forward link) transmissions from BS 102 to UE 104. In various aspects, communication link 120 may employ multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity.

[0054] BS 102 may generally include: NodeB, enhanced NodeB (eNB), next generation enhanced NodeB (ng-eNB), next generation NodeB (gNB or gNodeB), access point, base transceiver station, radio base station, radio transceiver, transceiver function, transmit and receive point, and / or other base stations. Each BS in BS 102 may provide communication coverage for a corresponding geographic coverage area 110, which may sometimes be referred to as a cell, and may overlap in some cases (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, a BS may provide communication coverage for a macro cell (covering a relatively large geographic area), a pico cell (covering a relatively small geographic area, such as a stadium), a femto cell (relatively small geographic area (e.g., a home)), and / or other types of cells.

[0055] Although BS102 is depicted as a single communication device in various aspects, BS102 can be implemented in various configurations. For example, one or more components of the base station may 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, to name a few examples. In another example, various aspects of the base station may be virtualized. More generally, a base station (e.g., BS102) may include components located at a single physical location or components located at various physical locations. In an example in which the base station includes components located at various physical locations, the various components may each perform a function so that the various components together implement functionality similar to that of a base station located at a single physical location. In some aspects, a base station including components located at various physical locations may 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.

[0056] Different BSs 102 within the wireless communication network 100 may 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)) may interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). A BS 102 configured for 5G (e.g., 5G NR or Next Generation RAN (NG-RAN)) may interface with the 5GC 190 via a second backhaul link 184. The BSs 102 may communicate with each other directly or indirectly (e.g., via the EPC 160 or the 5GC 190) over a third backhaul link 134 (e.g., an X2 interface), which may be wired or wireless.

[0057] The wireless communication network 100 may subdivide the electromagnetic spectrum into various categories, frequency bands, channels, or other characteristics. In some aspects, the subdivision is provided based on wavelength and frequency, where frequency may also be referred to as a carrier, subcarrier, channel, tone, or subband. For example, 3GPP currently defines frequency range 1 (FR1) as including 410 MHz to 7125 MHz, which is often (interchangeably) referred to as "below 6 GHz". Similarly, 3GPP currently defines frequency range 2 (FR2) as including 24,250 MHz to 52,600 MHz, which is sometimes (interchangeably) referred to as "millimeter wave" ("mmW" or "mmWave"). A base station (e.g., a mmWave base station such as BS180) configured to communicate using mmWave / near mmWave radio bands may utilize beamforming (e.g., 182) with a UE (e.g., 104) to improve path loss and range.

[0058] The communication link 120 between the BS 102 and, for example, the UE 104 may be through one or more carriers, which may have different bandwidths (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz, 400 MHz, and / or other MHz) and may be aggregated in various aspects. The carriers may 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 for DL ​​than for UL).

[0059] Communications using higher frequency bands may have higher path loss and shorter range than communications at lower frequencies. Figure 1180) may utilize beamforming 182 with UE 104 to improve path loss and range. For example, 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, BS 180 may send beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamformed signals from BS 180 in one or more receive directions 182". UE 104 may also send beamformed signals to BS 180 in one or more transmit directions 182". BS 180 may also receive beamformed signals from UE 104 in one or more receive directions 182'. BS 180 and UE 104 may then perform beam training to determine an optimal receive direction and an optimal transmit direction for each of BS 180 and UE 104. It is noteworthy that the transmit direction and receive direction of BS 180 may be the same or different. Similarly, the transmit direction and receive direction of UE 104 may be the same or different.

[0060] Wireless communication network 100 also includes a Wi-Fi AP 150 that communicates with a Wi-Fi station (STA) 152 via a communication link 154 in, for example, the 2.4 GHz and / or 5 GHz unlicensed spectrum.

[0061] Certain UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), a physical sidelink control channel (PSCCH), and / or a physical sidelink feedback channel (PSFCH).

[0062] The EPC 160 may include various functional components, including: a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and / or a packet data network (PDN) gateway 172, such as in the depicted example. The MME 162 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. In general, the MME 162 provides bearer and connection management.

[0063] Generally speaking, user Internet Protocol (IP) packets are delivered through the Serving Gateway 166, which itself is connected to the PDN Gateway 172. The PDN Gateway 172 provides UE IP address allocation and other functions. The PDN Gateway 172 and the BM-SC 170 are connected to the IP Services 176, which may include, for example, the Internet, an Intranet, an IP Multimedia Subsystem (IMS), a Packet Switched (PS) streaming media service, and / or other IP services.

[0064] The BM-SC 170 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS delivery, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and / or may be used to schedule MBMS delivery. The MBMS Gateway 168 may be used to distribute MBMS services to BSs 102 belonging to a multicast broadcast single frequency network (MBSFN) area broadcasting a specific service, and / or may be responsible for session management (start / stop) and for collecting eMBMS related charging information.

[0065] 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.

[0066] AMF 192 is a control node that handles signaling between UE 104 and 5GC 190. AMF 192 provides, for example, Quality of Service (QoS) flow and session management.

[0067] Internet Protocol (IP) packets are delivered through UPF 195, which is connected to IP Services 197 and provides IP address allocation for UEs and other functions for 5GC 190. IP Services 197 may include, for example, the Internet, Intranet, IMS, PS streaming services, and / or other IP services.

[0068] In various aspects, a network entity or network node may be implemented as a converged base station, a decomposed base station, a component of a base station, an integrated access and backhaul (IAB) node, a relay node, a sidelink node, to name a few examples.

[0069] Figure 2An example disaggregated base station 200 architecture is depicted. The disaggregated base station 200 architecture may include one or more central units (CUs) 210 that may communicate directly with a core network 220 via a backhaul link, or indirectly with the core network 220 through one or more disaggregated 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. The CU 210 may communicate with one or more distributed units (DUs) 230 via respective midhaul links, such as an F1 interface. The DU 230 may communicate with one or more radio units (RUs) 240 via respective fronthaul links. The RU 240 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 240.

[0070] Each of these units (e.g., CU 210, DU 230, RU 240, and near-RT RIC 225, non-RT RIC 215, and SMO framework 205) may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of these units or an associated processor or controller that provides instructions to the communication interface of these units may be configured to communicate with one or more of the other units via a transmission medium. For example, these units may include a wired interface configured to receive or send signals to one or more of the other units via a wired transmission medium. Additionally or alternatively, these units may include a wireless interface that may include a receiver, a transmitter, or a transceiver (such as a radio frequency (RF) transceiver) configured to receive signals on a wireless transmission medium or to send signals to one or more of the other units, or both.

[0071] In some aspects, CU 210 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 210. CU 210 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP)), control plane functionality (e.g., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 210 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, CU 210 may be implemented to communicate with DU 230 for network control and signaling.

[0072] DU 230 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 240. In some aspects, DU 230 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.) at least in part according to a functional split 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 that is configured to communicate signals with other layers (and modules) hosted by DU 230 or with control functions hosted by CU 210.

[0073] The lower layer functionality may be implemented by one or more RUs 240. In some deployments, a RU 240 controlled by a 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, etc.), or both, based at least in part on a functional split (such as a lower layer functional split). In such an architecture, the RU 240 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some implementations, 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 may enable the implementation of the DU 230 and the CU 210 in a cloud-based RAN architecture (such as a vRAN architecture).

[0074] The SMO framework 205 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 205 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 205 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 290) to perform network element lifecycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an 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, the SMO framework 205 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 211) via the O1 interface. Additionally, in some specific implementations, the SMO framework 205 may communicate directly with one or more RUs 240 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 .

[0075] The non-RT RIC 215 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 225. The non-RT RIC 215 may be coupled to or in communication with the near-RT RIC 225 (such as via an A1 interface). The near-RT RIC 225 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 210, one or more DUs 230, or both, and the O-eNB with the near-RT RIC 225.

[0076] In some implementations, in order to generate an AI / ML model 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. Such information may be utilized by the near-RT RIC 225 and may be received from a non-network data source or from a network function 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 of performance and employ AI / ML models to perform corrective actions through the SMO framework 205 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0077] Figure 3 Aspects of an example BS 102 and UE 104 are depicted.

[0078] In general, BS 102 includes various processors (e.g., 320, 330, 338, and 340), antennas 334a to 334t (collectively 334), transceivers 332a to 332t (collectively 332) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., data source 312) and wireless reception of data (e.g., data sink 339). 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 various functions described herein related to wireless communication.

[0079] In general, the UE 104 includes various processors (e.g., 358, 364, 366, and 380), antennas 352a to 352r (collectively 352), transceivers 354a to 354r (collectively 354) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., retrieved from a data source 362) and wireless reception of data (e.g., provided to a data sink 360). The UE 104 includes a controller / processor 380 that can be configured to implement various functions described herein related to wireless communications.

[0080] Regarding example downlink transmissions, BS 102 includes a transmit processor 320 that can receive data from a data source 312 and control information from a controller / processor 340. The control information can be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical HARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), and / or other channels. In some examples, the data can be for a physical downlink shared channel (PDSCH).

[0081] The transmit processor 320 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The transmit processor 320 may also generate reference symbols (such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH demodulation reference signal (DMRS), and a channel state information reference signal (CSI-RS)).

[0082] The transmit (TX) multiple-input multiple-output (MIMO) processor 330 may perform spatial processing (e.g., pre-coding) on ​​data symbols, control symbols, and / or reference symbols, where applicable, and may provide an output symbol stream to a modulator (MOD) in transceivers 332a to 332t. Each modulator in transceivers 332a to 332t may process a corresponding output symbol stream to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signals from the modulators in transceivers 332a to 332t may be transmitted via antennas 334a to 334t, respectively.

[0083] To receive downlink transmissions, UE 104 includes antennas 352a to 352r that can receive downlink signals from BS 102 and can provide received signals to demodulators (DEMODs) in transceivers 354a to 354r, respectively. Each demodulator in transceivers 354a to 354r can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator can further process the input samples to obtain received symbols.

[0084] A MIMO detector 356 may obtain received symbols from all demodulators in transceivers 354a through 354r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 358 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 104 to a data sink 360, and provide decoded control information to a controller / processor 380.

[0085] With respect to example uplink transmissions, the UE 104 also includes a transmit processor 364 that may receive and process data from a data source 362 (e.g., for a PUSCH) and control information from a controller / processor 380 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 364 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 364 may be pre-decoded by a TX MIMO processor 366, if applicable, further processed by modulators in the transceivers 354a to 354r (e.g., for SC-FDM), and transmitted to the BS 102.

[0086] At BS 102, uplink signals from UE 104 may be received by antennas 334 a through 334 t, processed by demodulators in transceivers 332 a through 332 t, detected by MIMO detector 336 if applicable, and further processed by receive processor 338 to obtain decoded data and decoded control information transmitted by UE 104. Receive processor 338 may provide decoded data to data sink 339 and decoded control information to controller / processor 340.

[0087] Memories 342 and 382 may store data and program codes for BS 102 and UE 104, respectively.

[0088] The scheduler 344 may schedule UEs to transmit data on the downlink and / or uplink.

[0089] In various aspects, BS 102 may be described as sending and receiving various types of data associated with the methods described herein. In these contexts, "sending" may refer to various mechanisms for outputting data, such as outputting data from a data source 312, a scheduler 344, a memory 342, a transmit processor 320, a controller / processor 340, a TX MIMO processor 330, transceivers 332a to 332t, antennas 334a to 334t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as obtaining data from antennas 334a to 334t, transceivers 332a to 332t, RX MIMO detectors 336, controller / processor 340, receive processor 338, scheduler 344, memory 342, and / or other aspects described herein.

[0090] In various aspects, the UE 104 may also be described as sending and receiving various types of data associated with the methods described herein. In these contexts, "sending" may refer to various mechanisms for outputting data, such as outputting data from a data source 362, a memory 382, ​​a transmit processor 364, a controller / processor 380, a TX MIMO processor 366, a transceiver 354a to 354t, an antenna 352a to 352t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as obtaining data from an antenna 352a to 352t, a transceiver 354a to 354t, a RX MIMO detector 356, a controller / processor 380, a receive processor 358, a memory 382, ​​and / or other aspects described herein.

[0091] In some aspects, the processor may be configured to perform various operations (such as those associated with the methods described herein) and respectively send (output) data to another interface configured to send data or receive (obtain) data from another interface configured to receive data.

[0092] Figure 4A , Figure 4B , Figure 4C and Figure 4D Describes a method for use in a wireless communication network such as Figure 1 Various aspects of the data structure of the wireless communication network 100).

[0093] Specifically, Figure 4A is a diagram 400 illustrating an example of a first subframe within a 5G (e.g., 5G NR) frame structure, Figure 4B is a diagram 430 illustrating an example of a DL channel within a 5G subframe, Figure 4C is a diagram 450 illustrating an example of a second subframe within a 5G frame structure, and Figure 4D FIG480 is a diagram illustrating an example of UL channels within a 5G subframe.

[0094] Wireless communication systems may utilize orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) on both the uplink and downlink. Such systems may also support half-duplex operation using time division duplex (TDD). OFDM and single carrier frequency division multiplexing (SC-FDM) will (for example, Figure 4B and Figure 4D The system bandwidth (as depicted in FIG. 1 ) 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.

[0095] The wireless communication frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers, subframes within the subcarrier set are dedicated to either DL or UL. The wireless communication frame structure may also be time division duplex (TDD), where for a particular set of subcarriers, subframes within the subcarrier set are dedicated to both DL and UL.

[0096] exist Figure 4A and Figure 4C In the wireless communication frame structure, TDD is used, where D is DL, U is UL, and X is used flexibly between DL / UL. The UE can configure the time slot format (dynamically configured by DL control information (DCI) or semi-statically / statically configured by radio resource control (RRC) signaling) through the received time slot format indicator (SFI). In the depicted example, the 10ms frame is divided into 10 equally sized 1ms subframes. Each subframe may include one or more time slots. In some examples, each time slot may include 7 or 14 symbols, depending on the time slot format. The subframe 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.

[0097] In certain aspects, the number of slots within a subframe is based on the slot configuration and parameter set. For example, for slot configuration 0, different parameter sets (μ) 0 to 5 allow for 1, 2, 4, 8, 16, and 32 slots per subframe, respectively. For slot configuration 1, different parameter sets 0 to 2 allow for 2, 4, and 8 slots per subframe, respectively. Thus, for slot configuration 0 and parameter set μ, there are 14 symbols / slot and 2μ slots / subframe. The subcarrier spacing and symbol length / duration are a function of the parameter set. The subcarrier spacing may be equal to 2 μ × 15kHz, where μ is parameter set 0 to 5. Thus, parameter set μ=0 has a subcarrier spacing of 15kHz, and parameter set μ=5 has a subcarrier spacing of 480kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figure 4A , Figure 4B , Figure 4C and Figure 4D An example is provided for slot configuration 0 with 14 symbols per slot and parameter set μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs.

[0098] like Figure 4A , Figure 4B , Figure 4C and Figure 4DAs depicted in , a resource grid can be used to represent a frame structure. Each time slot includes a resource block (RB) (also referred to as a physical RB (PRB)) extending, for example, 12 consecutive subcarriers. The resource grid is divided into a plurality of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0099] like Figure 4A As illustrated in FIG. , some of the REs carry data for UEs (eg, Figure 1 and Figure 3 The RS 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).

[0100] Figure 4B Examples of various DL channels within a subframe of a frame are illustrated.The Physical Downlink Control Channel (PDCCH) carries 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.

[0101] The primary synchronization signal (PSS) may be in symbol 2 of a particular subframe of a frame. The PSS is transmitted by a UE (e.g., Figure 1 and Figure 3 104) is used to determine subframe / symbol timing and physical layer identification.

[0102] A Secondary Synchronization Signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing.

[0103] Based on the physical layer identifier and the 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 system bandwidth and the number of RBs in the system frame number (SFN). The physical downlink shared channel (PDSCH) carries user data, broadcast system information (such as system information blocks (SIBs)) that is not sent via the PBCH, and / or paging messages.

[0104] like Figure 4CAs illustrated in , some of the REs carry DMRS for channel estimation at the base station (indicated as R for a specific configuration, but other DMRS configurations are possible). The UE may send a DMRS for the PUCCH and a DMRS for the PUSCH. The PUSCH DMRS may be sent, for example, in the first one or two symbols of the PUSCH. The PUCCH DMRS may be sent in different configurations depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used. UE104 may send a sounding reference signal (SRS). The SRS may be sent, for example, in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the teeth of the comb. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0105] Figure 4D Examples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), and HARQ ACK / NACK feedback. The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0106] Example beamforming and management process

[0107] In a typical wireless communication system, various beamforming and management procedures may be used to determine and maintain beam pair links (BPLs).

[0108] An example beamforming and management process used in a typical wireless communication system is referred to as a P1 process. In the P1 process, a network entity (e.g., such as Figure 1 and Figure 3 BS 102 in the example may provide a UE (e.g., such as Figure 1 and Figure 3 The network entity may transmit a measurement request to a UE 104 in the cell, and may subsequently send one or more signals (sometimes referred to as "P1 signals") to the UE for measurement. In the P1 process, the network entity transmits a signal in different spatial directions 182' (corresponding to the transmit (TX) beam) in each symbol by beamforming so as to reach several (e.g., most or all) relevant spatial locations of the cell of the network entity. In this way, the network entity sends signals using different transmit beams in different directions over time. In some examples, a synchronization signal block (SSB) is used as the P1 signal. In some examples, a channel state information reference signal (CSI-RS), a demodulation reference signal (DMRS), or another downlink signal may be used as the P1 signal.

[0109] In the P1 process, in order to successfully receive at least one symbol of the P1 signal, the UE finds (e.g., determines / selects) an appropriate receive (RX) beam. Signals (e.g., SSBs) from multiple network entities can be measured simultaneously for a given signal index (e.g., SSB index) corresponding to a given time period. The UE may apply a different receive beam (corresponding to a different spatial direction 182″) during each occurrence (e.g., each symbol) of the P1 signal. Once the UE successfully receives a symbol of the P1 signal, the UE and the network entity have discovered the BPL (i.e., the UE RX beam used to receive the P1 signal in the symbol and the network entity TX beam used to send the P1 signal in the symbol). In some cases, the UE does not search all of its possible UE RX beams before the UE finds the best UE RX beam, as this would incur additional delay. Instead, the UE may select the RX beam once it is “good enough” (e.g., having a quality (e.g., signal-to-noise ratio (SNR) or signal-to-interference-plus-noise ratio (SINR)) that satisfies a threshold (e.g., a predefined threshold). The UE may not know the beam that the network entity used to send the P1 signal in the symbol; however, the UE 420 may report to BS 410 the time at which it observed the signal. For example, the UE may report to the network entity the symbol index at which the P1 signal was successfully received. The network entity may receive the report and may determine which network entity TX beam the network entity used at the indicated time. In some examples, the UE measures the signal quality of the P1 signal, such as reference signal received power (RSRP) or another signal quality parameter (e.g., SNR, channel flatness, etc.). The UE may report the measured signal quality (e.g., RSRP) together with the symbol index to the network entity. In some cases, the UE may report to the network entity multiple symbol indices corresponding to multiple network entity TX beams.

[0110] As part of the beamforming and management process, the BPL used between the UE and the BS may be refined / changed. For example, the BPL may be periodically refined to adapt to changing channel conditions, such as due to movement of the UE or other objects, fading due to Doppler spread, etc. The UE may monitor the quality of the BPL (e.g., the BPL found / selected during the P1 process and / or the previously refined BPL) to refine the BPL when the quality degrades (e.g., when the BPL quality drops below a threshold or when another BPL has a higher quality). In a typical wireless communication system, the beamforming and management process for beam refinement of the BPL may be referred to as the P2 process and the P3 process for respectively refining the network entity beam and the UE beam of the individual BPL.

[0111] In a typical wireless communication system, for the P2 process, the network entity uses a different network entity beam that is spatially close to the network entity beam of the current BPL to send the symbol of the signal. For example, the network entity uses adjacent TX beams (e.g., beam scanning) around the TX beam of the current BPL to send signals in different symbols. The TX beam used by the network entity for the P2 process may be different from the TX beam used by the network entity for the P1 process. For example, the TX beam used by the network entity for the P2 process may be closer together and / or more focused (e.g., narrower) than the TX beam interval used by the network entity for the P1 process. During the P2 process, the UE keeps its RX beam constant. The UE may measure the signal quality (e.g., RSRP) of the signal in different symbols and indicate the symbol with the highest signal quality measured. Based on the indication, the network entity may determine the strongest (e.g., best or related to the highest signal quality) TX beam (i.e., the TX beam used in the indicated symbol). The BPL may be refined accordingly to use the indicated TX beam.

[0112] In a typical wireless communication system, for the P3 process, the network entity maintains a constant TX beam (e.g., the TX beam of the current BPL) and uses the constant TX beam to send symbols of the signal. During the P3 process, the UE uses different RX beams to scan signals in different symbols. For example, the UE may perform scanning using an RX beam adjacent to the RX beam in the current BPL (i.e., the BPL being refined). The UE may measure the signal quality (e.g., RSRP) of the signal of each RX beam and identify the strongest UE RX beam. The UE may use the identified RX beam for the BPL. The UE may report the signal quality to the network entity.

[0113] Aspects related to decoupling downlink and uplink beam management

[0114] In a typical wireless communication network using beamforming, a UE receives a DL signal on a DL beam and transmits a UL signal on a UL beam, both of which are selected based on the layer 1 (L1) metric of the DL beam. Thus, the UL beam and the DL beam are transmitted along the same physical path.

[0115] In various aspects of the present disclosure, a UE may receive a DL signal from a network entity on a DL beam and send an UL signal to the network entity on a UL beam different from the DL beam. In beam reporting, the DL beam and the UL beam may be associated with the same reference signal. In such cases, the UL beam and the DL beam are referred to as decoupled.

[0116] According to aspects of the present disclosure, the UE may select a UL beam for UL transmission using decoupled UL beams and DL beams based on the UL throughput of the UE. In such cases, the DL beam for DL ​​transmission to the UE may be selected based on the DL throughput to the UE.

[0117] Figure 5A An example of a UE 504 communicating with a network entity 502 via decoupled UL and DL beams according to various aspects of the present disclosure is depicted. The network entity 502 may be a network entity with respect to Figure 1 and Figure 3 BS 102 as depicted and described or with respect to Figure 2 An example of a decomposed base station is depicted and described. Similarly, UE 504 may be relative to Figure 1 and Figure 3 An example of a UE 104 as depicted and described. In this example, since limited UL transmit power prevents the use of rank 2 communications on the uplink on beam pair 512, beam pair 512 provides rank 2 for DL ​​communications from a network entity to the UE and provides rank 1 for UL communications from the UE to the network entity. Beam pair 510 provides rank 1 for both DL communications and UL communications with a higher link quality than beam pair 512 because beam pair 510 has a lower path loss than beam pair 512. In this example, if DL and UL beam selection are decoupled for communications between the UE and the network entity, both DL throughput and UL throughput can be optimized. For example, DL throughput can be optimized by using beam pair 512 for DL ​​communications, and UL throughput can be optimized by using beam pair 510 for UL communications.

[0118] In various aspects of the present disclosure, the UE may select a UL beam for UL transmission using decoupled UL beams and DL beams based on a maximum allowed illumination (MPE) parameter of the UE. In such cases, the DL beam for DL ​​transmission to the UE may be selected based on a DL throughput to the UE or an L1 metric of the DL beam.

[0119] Figure 5B An example 550 of a UE 554 communicating with a network entity 552 via decoupled UL and DL beams according to aspects of the present disclosure is depicted. The network entity 552 may be a network entity with respect to Figure 1 and Figure 3 BS 102 as depicted and described or with respect to Figure 2 An example of a decomposed base station is depicted and described. Similarly, UE 554 may be relative to Figure 1 and Figure 3An example of a UE 104 is depicted and described. In this example, the UL transmit power of UE beam 560 may be limited due to MPE, while UE beam 562 does not suffer from MPE limitation. In this case, for example, if beam 560 has the best DL reference signal received power (RSRP), UL performance may be improved by selecting beam 562 for UL communications, while using beam 560 for DL ​​communications may improve DL performance. Selecting a UL beam based on the UE's MPE parameters may be beneficial, especially when the MPE problem is not severe enough to trigger an MPE report for UL beam replacement.

[0120] According to aspects of the present disclosure, a UE may use decoupled receive and transmit beams for the same transmit configuration indicator (TCI) state. In some cases, if a lower UL throughput is acceptable for the operation of the UE (e.g., the UE does not generate a large amount of UL traffic), the UE may autonomously switch from transmitting via a narrow UL beam (configured by a network entity based on, for example, an L1 metric of the DL beam) to transmitting via a wide beam (e.g., using a single antenna element) in order to save power. It should be noted that if the wide UL beam contains a narrow UL beam, then using the wide UL beam may not cause any problems, because the network entity will still be able to receive UL transmissions via the wide UL beam.

[0121] In some cases, if the transmit power on a UL beam (configured by the network entity) is limited due to MPE, the UE may autonomously select a UL beam whose transmit power is not limited by MPE.

[0122] In some cases, if a UL beam (configured by a network entity) has a lower UL throughput than another UL beam, the UE may autonomously select the UL beam with better UL throughput.

[0123] In each of these cases, if the network entity uses the beam selected in the P2 beam scanning process, the network entity may not be able to receive the UL beam decoupled from the DL beam for the same TCI state.

[0124] Figure 6 An example of a UE 604 communicating with a network entity 602 via decoupled UL and DL beams according to various aspects of the present disclosure is depicted. The network entity 602 may be a network entity with respect to Figure 1 and Figure 3 BS 102 as depicted and described or with respect to Figure 2 An example of a decomposed base station is depicted and described. Similarly, UE 604 may be relative to Figure 1 and Figure 3An example of a UE 104 is depicted and described. In this example, for a TCI with DL RS #1 as a quasi co-located (QCL) source, if the UL transmit power on beam 610 is limited by MPE, the UE may receive via beam 610 and transmit via beam 612. For example, for the same TCI, the network entity may transmit via beam 610 in order to reduce the number of configured TCI states. However, when the network entity is configured to use beam 610, the network entity may not be able to receive via beam 612.

[0125] According to various aspects of the present disclosure, it is desirable to provide a technique for notifying a network entity (e.g., a gNB) that the receive beam and transmit beam used by a UE are the same or different for the same reference signal, so that the network entity will decide to use a beam that is the same as or different from the beam used for transmitting the QCL source RS on which the transmit beam used by the UE is based for reception.

[0126] Example Operations of Entities in a Communication Network

[0127] Figure 7 A call flow 700 is depicted for communication between a network entity 702 and a user equipment (UE) 704 in a network. In some aspects, the network entity 702 may be a Figure 1 and Figure 3 BS102 as depicted and described or for Figure 2 An example of a decomposed base station is depicted and described. Similarly, UE 704 may be relative to Figure 1 and Figure 3 An example of a UE 104 is depicted and described. However, in other aspects, the UE 104 may be another type of wireless communication device and the BS 102 may be another type of network entity or network node, such as those described herein.

[0128] As shown, at 706, the network entity transmits a reporting configuration to the UE, the reporting configuration configuring the UE to report the beam quality of the decoupled uplink (UL) beam and downlink (DL) beam. The network entity transmitting the reporting configuration is an example of the network entity transmitting an indication for reporting the beam quality of the decoupled UL beam and DL beam. Similarly, the UE receiving the reporting configuration is an example of the UE obtaining an indication for reporting the beam quality of the decoupled UL beam and DL beam. At 708, the UE reports, and the network entity receives a report configured according to the configuration. The network entity receiving the report is an example of the network entity receiving a report of the beam quality of at least one of the UL beam or the DL beam according to the indication. Similarly, the UE sending the report is an example of the UE reporting the beam quality of at least one of the UL beam or the DL beam according to the indication.

[0129] According to aspects of the present disclosure, a network entity may configure three types of beam reports for use by a UE when reporting beam quality of decoupled DL and UL TCIs. The three types of beam reports may include a DL-only beam report, a UL-only beam report, or a joint DL and UL beam report. For example, the three types of beam reports may be indicated in a CSI-ReportConfig information element (IE). The network entity configuring one or more of these types of beam reports is an example of a network entity transmitting an indication for reporting beam quality of decoupled UL beams and DL beams, such as Figure 7 Similarly, the configuration in which the UE receives one or more of these types of beam reports is an example of the UE obtaining an indication of the beam quality for reporting decoupled UL beams and DL beams, such as Figure 7 As shown at 706 in .

[0130] Fig. 8A An example timeline 800 of a synchronization signal block (SSB) based P1 beam management process in accordance with aspects of the present disclosure is depicted. In the example timeline, a network entity transmits SSBs via four different beams depicted as SSB 1, SSB 2, SSB 3, and SSB 4. Later, the UE transmits a beam report, which may be a DL-only beam report, a UL-only beam report, or a joint DL and UL beam report.

[0131] Figure 8B Example beam reports that a UE may send in timeline 800 in accordance with aspects of the present disclosure are depicted in box form. As shown, a DL-only beam report 852 includes a column of SSB resource identifiers for downlink beams, referred to as SSBRI-D-1, SSBRI-D-2, SSBRI-D-3, and SSBRI-D-4. For each SSB resource identifier in the SSB resource identifiers for the DL beam, there is a corresponding DL beam metric in the same row. As shown, a UL-only beam report 854 includes a column of SSB resource identifiers for uplink beams, referred to as SSBRI-U-1, SSBRI-U-2, SSBRI-U-3, and SSBRI-U-4. For the SSB resource identifier in the SSB resource identifiers for the UL beam, there is a corresponding UL beam metric in the same row. As shown, a joint DL and UL beam report 860 includes all of both the DL-only beam report 852 and the UL-only beam report 854. The UE sending a DL-only beam report, a UL-only beam report, or a joint DL and UL beam report to the network entity is an example of the UE reporting and the network entity receiving a report of the beam quality of at least one of the UL beam or the DL beam according to the indication, such as Figure 7 As shown at 708 in .

[0132] In various aspects of the present disclosure, a UE may notify a network entity whether the UE uses decoupled DL beams and UL beams for a given TCI or reports a DL RS (i.e., associated with a reference signal) for decoupled DL beams and UL beams for the same TCI. For example, one bit may be used for each reported DL RS in a DL beam report to indicate whether the decoupled DL beam and UL beam corresponding to the DL RS is used by the reporting UE. The UE notifying the network entity whether the UE uses decoupled DL beams and UL beams for a given TCI or the reported DL RS is an example in which the UE reports and the network entity receives a report of beam quality of at least one of the UL beam or the DL beam according to the indication, such as Figure 7 As shown at 708 in .

[0133] According to aspects of the present disclosure, the UE using the decoupled DL beam and UL beam is an example of the UE obtaining an indication for reporting the beam quality of the decoupled UL beam and DL beam, such as Figure 7 As shown at 706 in .

[0134] Fig.9A An example timeline 900 of a synchronization signal block (SSB) based P1 beam management process in accordance with aspects of the present disclosure is depicted. In the example timeline, a network entity transmits SSBs via four different beams depicted as SSB 1, SSB 2, SSB 3, and SSB 4. Later, the UE transmits a beam report, which may be a DL-only beam report, a UL-only beam report, or a joint DL and UL beam report.

[0135] Fig. 9B Depicted is a UE, a best DL beam for SSB 2, and a best UL beam for SSB 2 in accordance with aspects of the present disclosure. As shown, the UE determines the best DL beam and the best UL beam for each SSB based on measurements of SSBs previously transmitted by a network entity.

[0136] Fig. 9C An example beam report 952 that a UE may send in timeline 900 in accordance with aspects of the present disclosure is depicted in block form. As shown, the beam report includes a list of SSB source identifiers, referred to as SSBRI-1, SSBRI-2, SSBRI-3, and SSBRI-4. For each of the SSB resource identifiers, there is a corresponding DL beam metric and an indicator of whether the UE uses decoupled DL beams and UL beams for that SSB resource indicator in the same row. The UE sending a beam report with an indicator of whether the UE uses decoupled DL beams and UL beams is an example of the UE reporting and the network entity receiving a report of beam quality of at least one of the UL beam or the DL beam based on the indication, such as Figure 7 As shown at 708 in .

[0137] In various aspects of the present disclosure, a UE may report both DL metrics and UL metrics according to a reported RS for a decoupled DL beam and UL beam for the same TCI. A network entity that receives such a report may select a TCI by jointly considering both the DL metrics and the UL metrics. In addition, an indicator may be signaled to the UE to use a decoupled DL beam and UL beam according to the reported RS. The UE including an indicator of using a decoupled DL beam and UL beam for a reported DL RS in a beam report to the network entity is an example of the UE reporting and the network entity receiving a report of beam quality of at least one of the UL beam or the DL beam according to the indication, such as Figure 7 As shown at 708 in .

[0138] Fig.10 In block form, a UE according to various aspects of the present disclosure may be Fig.9A An example beam report 1002 is shown sent in timeline 900. As shown, the beam report includes a list of SSB source identifiers, referred to as SSBRI-1, SSBRI-2, SSBRI-3, and SSBRI-4. For each of the SSB resource identifiers, there is a corresponding DL beam metric, a corresponding UL beam metric, and an indicator of whether the UE uses decoupled DL beams and UL beams for that SSB resource indicator in the same row. The UE sending a beam report with an indicator of whether the UE uses decoupled DL beams and UL beams is an example of the UE reporting and the network entity receiving a report of beam quality of at least one of the UL beam or the DL beam based on the indication, such as Figure 7 As shown at 708 in .

[0139] According to aspects of the present disclosure, the DL metrics may include one or more of layer 1 RSRP (L1-RSRP), layer 1 signal to interference plus noise ratio (L1-SINR), DL throughput, channel quality indicator (CQI), rank indicator (RI), or precoding matrix indicator (PMI).

[0140] In various aspects of the present disclosure, the UL metric may include one or more of UL RSRP, power management maximum power reduction (P-MPR), virtual power headroom (vPHR), power headroom (PHR), or the maximum transmit power of the UE in the band.

[0141] According to aspects of the present disclosure, when a UE is configured to perform beam reporting for a P2 beam management procedure for a decoupled DL / UL TCI, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3BS 102 as shown) may configure the UE to have separate periodic or semi-persistent DL-only and UL-only beam reporting. The network entity configuring the UE to perform such DL-only and UL-only beam reporting is an example of the network entity transmitting an indication for reporting the beam quality of the decoupled UL beam and DL beam, such as Figure 7 Similarly, the UE receiving a configuration for performing such DL-only and UL-only beam reporting is an example of the UE obtaining an indication for reporting the beam quality of the decoupled UL beam and DL beam, such as Figure 7 As shown at 706 in .

[0142] In various aspects of the present disclosure, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3 The BS 102 shown may configure a periodic or semi-persistent CSI-RS resource set that may alternatively be measured by the UE using decoupled DL beams and UL beams to supply measurements to the network entity for beam selection during a periodic or semi-persistent CSI-RS based P2 beam management process for the same TCI with decoupled DL beams and UL beams.

[0143] According to aspects of the present disclosure, when performing a periodic or semi-persistent CSI-RS based P2 beam management procedure for decoupled DL and UL TCI, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3 The BS 102 shown) may configure the UE with separate periodic or semi-persistent DL-only and UL-only CSI-RS for the P3 beam management process.

[0144] In various aspects of the present disclosure, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3 BS102 as shown) may be configured with a periodic or semi-persistent CSI-RS resource set, which may be alternatively used to measure a DL receive beam during a P3 beam management process, or to measure a UL transmit beam for UL beam refinement during a periodic or semi-persistent CSI-RS based P2 beam management process for the same TCI with decoupled DL beams and UL beams.

[0145] According to aspects of the present disclosure, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3BS 102 as shown may configure three types of beam reports for the UE to report beam measurements for the P2 beam management process for decoupled DL and UL TCI. The three types of beam reports may include DL-only reports, UL-only reports, or joint DL beam and UL beam reports. For example, the network entity may include the type of report in the CSI-ReportConfig IE. The network entity configures the UE to perform one of the three types of beam reports. A beam report is an example of the network entity transmitting an indication for reporting the beam quality of the decoupled UL beam and DL beam, such as Figure 7 Similarly, the UE receiving a configuration for performing one of the three types of beam reporting is an example of the UE obtaining an indication for reporting the beam quality of the decoupled UL beam and DL beam, such as Figure 7 As shown at 706 in .

[0146] Fig.11A An example timeline 1100 of a P2 beam management process according to aspects of the present disclosure is depicted. In the example timeline, a network entity triggers a DL-only P2 beam report based on an aperiodic CSI-RS to cause a UE to identify a best DL P2 beam within a DL P1 SSB beam selected by the network entity, e.g., a DL P1 beam with identifier SSBRI-D-1. The network entity transmits a CSI-RS quasi-co-located with SSBRI-D-1 via four different beams depicted as CSI-RS1, CSI-RS2, CSI-RS 3, and CSI-RS 4. Later, the UE transmits a DL-only beam report based on the CSI-RS.

[0147] Fig. 11B A UE and a receive beam of the UE associated with SSBRI-D-1 according to aspects of the present disclosure are depicted. As shown, the UE uses the depicted receive beam to measure a CSI-RS transmitted by a network entity and received by the UE.

[0148] Fig. 11C An example DL-only beam report 1152 that a UE may send in timeline 1100 in accordance with aspects of the present disclosure is depicted in block form. As shown, the beam report includes a list of CSI-RS resource identifiers, referred to as CRI-D-1, CRI-D-2, CRI-D-3, and CRI-D-4. For each of the CSI-RS resource identifiers, there is a corresponding DL beam metric in the same row. The UE sending such a DL-only beam report is an example of the UE reporting and the network entity receiving a report of the beam quality of at least one of the UL beam or the DL beam in accordance with the indication, such as Figure 7 As shown at 708 in .

[0149] In various aspects of the present disclosure, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3 The BS 102 shown may trigger UL P2 beam-only reporting based on the AP CSI-RS to identify the best UL P2 beam within the UL P1 SSB beam selected by the network entity for decoupled DL / UL TCI.

[0150] Fig. 12A An example timeline 1100 of a P2 beam management process according to aspects of the present disclosure is depicted. In the example timeline, a network entity triggers a UL P2 beam-only report based on aperiodic CSI-RS to cause a UE to identify a best UL P2 beam within a UL P1 SSB beam selected by the network entity, e.g., a UL P1 beam with identifier SSBRI-U-1. The network entity transmits CSI-RS quasi-co-located with SSBRI-U-1 via four different beams depicted as CSI-RS1, CSI-RS2, CSI-RS 3, and CSI-RS 4. Later, the UE transmits a UL beam-only report based on the CSI-RS.

[0151] Fig. 12B A UE and a receive beam of the UE associated with SSBRI-U-1 according to aspects of the present disclosure are depicted. As shown, the UE uses the depicted receive beam to measure a CSI-RS transmitted by a network entity and received by the UE.

[0152] Fig. 12C An example UL-only beam report 1252 that a UE may send in timeline 1200 in accordance with aspects of the present disclosure is depicted in box form. As shown, the beam report includes a list of CSI-RS resource identifiers, referred to as CRI-D-1, CRI-D-2, CRI-D-3, and CRI-D-4. For each CSI-RS resource identifier in the CSI-RS resource identifiers, there is a corresponding UL beam metric in the same row. The UE sending such an UL-only beam report is an example of the UE reporting and the network entity receiving a report of the beam quality of at least one of the UL beam or the DL beam in accordance with the indication, such as Figure 7 As shown at 708 in .

[0153] According to aspects of the present disclosure, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3BS102 as shown) may trigger the transmission of two non-periodic CSI-RS resource sets, where the second set is a repetition of the first set for P2 CSI-RS beam reporting. In this case, the first set and the second set are measured by the UE using the best DL beam and the best UL beam of the P1 SSB beam selected by the network entity for DL ​​and UL beam measurements, respectively.

[0154] For UEs supporting simultaneous dual-beam measurement, the network entity may trigger the transmission of a single aperiodic CSI-RS resource set, and the UE may measure a single set of aperiodic CSI-RS using both DL and UL beams, and then report the best DL beam and the best UL beam.

[0155] In various aspects of the present disclosure, the UE selects a P2 CSI-RS beam as a potential TCI for both DL and UL by jointly considering the DL metric of the P2 CSI-RS beam measured by the best DL beam of the P1 SSB beam selected by the network entity and the UL metric measured by the best UL beam of the same P1 SSB beam. For example, the UE may report the CSI-RS beam with the best DL RSRP as the best CSI-RS beam among all CSI-RS beams with UL RSRP exceeding a minimum threshold.

[0156] According to aspects of the present disclosure, if the following is the case, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3 BS 102 as shown) can trigger two sets of AP CSI-RS resource sets for DL ​​and UL metric measurements:

[0157] 1) SSBRI-1 has decoupled UE DL / UL beams as indicated in the P1 report; and

[0158] 2) The UE does not support one RS measured by two receive beams simultaneously

[0159] Fig.13AAn example timeline 1300 of a P2 beam management process in accordance with aspects of the present disclosure is depicted. In the example timeline, a network entity triggers a P2 beam report based on an aperiodic CSI-RS to cause a UE to identify a best DL P2 beam and a best UL P2 beam within a UL P1 SSB beam selected by the network entity, e.g., a DL P1 and UL P1 beam with identifier SSBRI-1. The network entity transmits a first set of CSI-RS quasi-co-located with SSBRI-1 via four different beams depicted as CSI-RS1, CSI-RS2, CSI-RS 3, and CSI-RS 4. The UE measures the CSI-RS in the first set using the best DL beam associated with SSBRI-1, e.g., CSI-RS4. Fig. 13B Next, the network transmits a second set of CSI-RS quasi-co-located with SSBRI-1 via the same four beams used in transmitting the CSI-RS in the first set. The UE measures the CSI-RS in the second set using the best UL beam associated with SSBRI-1, as shown in FIG. Fig. 13C Later, the UE sends a DL beam report based on the CSI-RS in the first set and the second set.

[0160] Fig. 13B A UE and an optimal DL beam associated with SSBRI-1 of the UE according to various aspects of the present disclosure are depicted. The UE uses the depicted DL beam to measure the UE received by the network entity at Fig.13A The CSI-RS transmitted in the first set is shown.

[0161] Fig. 13C A UE and an optimal UL beam associated with SSBRI-1 of the UE according to various aspects of the present disclosure are depicted. The UE uses the depicted UL beam to measure the UE received by the network entity at Fig.13A The CSI-RS transmitted in the second set is shown.

[0162] In various aspects of the present disclosure, if the network entity triggers the transmission of two sets of CSI-RS, both DL and UL RSRP may be reported based on the reported CRI. UL RSRP may be calculated as:

[0163] UL RSRP=(UL transmit power of the UL beam for SSBRI-1−DL transmit power of the DL beam for the reported CRI)+DL RSRP measured by the UL beam for SSBRI-1.

[0164] According to aspects of the present disclosure, for each reported CRI, one bit may indicate whether the corresponding UE DL and UL beams are decoupled.

[0165] Fig.14 In block form, a UE according to various aspects of the present disclosure may be Fig.13A An example beam report 1402 is shown sent in timeline 1300. As shown, the beam report includes a list of CSI-RS resource identifiers, referred to as CRI-1, CRI-2, CRI-3, and CRI-4. For each CSI-RS resource identifier in the CSI-RS resource identifiers, there is a corresponding DL RSRP, a corresponding UL RSRP, and an indicator of whether the UE uses decoupled DL beams and UL beams for that CSI-RS resource indicator in the same row. The UE sending a beam report with an indicator of whether the UE uses decoupled DL beams and UL beams is an example of the UE reporting and the network entity receiving a report of the beam quality of at least one of the UL beam or the DL beam based on the indication, such as Figure 7 As shown at 708 in .

[0166] In various aspects of the present disclosure, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3 The BS 102 shown may configure three types of P3 beam refinement procedures without reporting, including DL-only P3 beam refinement, UL-only P3 beam refinement, or joint DL and UL P3 beam refinement. For example, the network entity may configure P3 beam refinement by indicating P3 beam refinement in the CSI-ReportConfig IE.

[0167] According to aspects of the present disclosure, for DL-only P3 beam refinement, a network entity triggers repetition of a P2 CSI-RS beam selected by the network entity for DL ​​to refine the DL receive beam within a receive beam for an SSB (such as SSBRI-D-1) received with a downlink beam.

[0168] Fig.15A An example timeline 1500 of a P3 beam refinement process without reporting in accordance with aspects of the present disclosure is depicted. In the example timeline, a network entity triggers DL-only P3 beam refinement based on aperiodic CSI-RS to cause a UE to refine the best DL P3 beam within a receive beam selected by the network entity (e.g., a receive beam of an SSB with identifier SSBRI-D-1). The network entity transmits a CSI-RS quasi-co-located with SSBRI-D-1 four times via the same beam depicted as CSI-RS1.

[0169] Fig. 15B A UE and its receive beam associated with SSBRI-D-1 are depicted in accordance with aspects of the present disclosure. As shown, the UE uses the depicted receive beam to refine the P3 DL receive beam.

[0170] In various aspects of the present disclosure, for UL P3-only beam refinement, a network entity (e.g., a gNB or BS, such as Figure 1 and Figure 3 BS 102 is shown triggering repetition of a P2 CSI-RS beam for a UL selected by a network entity to refine the UL transmit beam within a transmit beam for an SSB (such as SSBRI-U-1) received with the UL beam.

[0171] Fig.16A An example timeline 1600 of a P3 beam refinement process without reporting in accordance with aspects of the present disclosure is depicted. In the example timeline, a network entity triggers UL-only P3 beam refinement based on aperiodic CSI-RS to cause a UE to refine the best UL P3 beam within a transmit beam selected by the network entity (e.g., a transmit beam of an SSB with identifier SSBRI-U-1). The network entity transmits CSI-RS quasi-co-located with SSBRI-U-1 four times via the same beam depicted as CSI-RS 4.

[0172] Fig. 16B A UE and its transmit beams associated with SSBRI-U-1 are depicted in accordance with aspects of the present disclosure. As shown, the UE uses the depicted transmit beams to refine the P3 UL transmit beam.

[0173] According to aspects of the present disclosure, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3 BS 102 as shown may trigger two non-periodic CSI-RS resource sets, where the second set is a repetition of the first set for P3 CSI-RS beam refinement. In this case, the first set and the second set are used by the UE to refine the DL beam and the UL beam for the P2 SSB beam selected by the network entity for DL ​​and UL P3 beam refinement, respectively.

[0174] For UEs supporting simultaneous dual-beam measurement, the network entity may trigger the transmission of a single aperiodic CSI-RS resource set, and the UE may use a single set of aperiodic CSI-RS to refine both the DL beam and the UL beam.

[0175] According to aspects of the present disclosure, if the following is the case, a network entity (e.g., a gNB or a BS, such as Figure 1 and Figure 3 BS 102 as shown) can trigger two sets of AP CSI-RS resource sets for DL ​​and UL metric measurements:

[0176] 3) SSBRI-1 has decoupled UE DL and UL beams as indicated in the P1 report; and

[0177] 4) The UE does not support one RS measured by two receive beams simultaneously

[0178] Fig.17A An example timeline 1700 of a P3 beam refinement process in accordance with aspects of the present disclosure is depicted. In the example timeline, a network entity triggers P3 beam refinement based on aperiodic CSI-RS to cause a UE to refine a DL P3 beam and a UL P3 beam within UL and DL SSB beams selected by the network entity, e.g., a DL P1 beam and a UL P1 beam having identifiers SSBRI-D-1 and SSBRI-U-1. The network entity transmits a first set of four CSI-RS quasi-co-located with SSBRI-1 via a beam depicted as CSI-RS2. The UE refines a receive beam based on the CSI-RS in the first set using a receive beam associated with SSBRI-D-1, e.g., Fig. 17B Next, the network transmits a second set of CSI-RS quasi-co-located with SSBRI-1 via the same beam used in transmitting the CSI-RS in the first set. The UE uses the transmit beam associated with SSBRI-U-1 to refine the transmit beam based on the CSI-RS in the second set, as shown in FIG. Fig. 17C shown.

[0179] Fig. 17B A UE and a receive beam associated with SSBRI-D-1 of the UE according to various aspects of the present disclosure are depicted. The UE receives a receive beam associated with SSBRI-D-1 based on a received beam received by a network entity at Fig.13A The CSI-RS sent in the first set is shown to refine the receive beam.

[0180] Fig. 17C A UE and a transmit beam associated with SSBRI-U-1 of the UE according to various aspects of the present disclosure are depicted. The UE Fig.13A The CSI-RS sent in the second set is shown to refine the transmit beam.

[0181] Example Operation of User Equipment

[0182] Fig.18 A method for use by a UE such as Figure 1 and Figure 3 An example of method 1800 for performing wireless communications with a UE 104).

[0183] Method 1800 begins at step 1805, where an indication for reporting the beam quality of a decoupled UL beam and DL beam is obtained. In some cases, the operation of this step refers to the operation of Fig. 20The described circuit for obtaining and / or code for obtaining, or can be executed by the circuit and / or the code.

[0184] Then, method 1800 proceeds to step 1810, where the beam quality of at least one of the UL beam or the DL beam is reported according to the indication. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for reporting and / or codes for reporting may be performed by or may be executed by the circuits and / or codes.

[0185] In some aspects, obtaining the indication includes receiving a configuration for reporting a first quality metric of a DL beam or a second quality metric of a UL beam; and reporting the beam quality includes sending a report according to the configuration.

[0186] In some aspects, the configuration configures the UE to report only the first quality metric of the DL beam.

[0187] In some aspects, the configuration configures the UE to report the second quality metric for the UL beam only.

[0188] In some aspects, the configuration configures the UE to report a first quality metric for a DL beam and a second quality metric for a UL beam.

[0189] In some aspects, the method 1800 further includes determining a first quality metric based on the first periodic or semi-persistently scheduled CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0190] In some aspects, the method 1800 further includes determining a second quality metric based on a second periodic or semi-persistently scheduled CSI-RS that is different from the first periodic or semi-persistently scheduled CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0191] In some aspects, the method 1800 further includes receiving a configuration of a first periodic or semi-persistently scheduled CSI-RS and a second periodic or semi-persistently scheduled CSI-RS. In some cases, the operation of this step refers to the configuration of Fig. 20 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.

[0192] In some aspects, method 1800 further includes determining a first quality metric or a second quality metric based on the non-periodic CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0193] In some aspects, method 1800 further includes determining a first quality metric based on the first non-periodic CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0194] In some aspects, the method 1800 further includes determining a second quality metric based on a second aperiodic CSI-RS that is a repetition of the first aperiodic CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0195] In some aspects, method 1800 further includes determining a first quality metric based on the non-periodic CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0196] In some aspects, method 1800 further includes determining a second quality metric based on the non-periodic CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0197] In some aspects, obtaining the indication comprises sending a UL signal to the network entity via a UL beam and receiving a DL signal from the network entity via a DL beam.

[0198] In some aspects, reporting the beam quality comprises sending a report comprising a quality metric of the DL beam and an indicator that the UL beam is decoupled from the DL beam.

[0199] In some aspects, reporting the beam quality comprises sending a report comprising a first quality metric of the DL beam, a second quality metric of the UL beam, and an indicator that the UL beam is decoupled from the DL beam.

[0200] In some aspects, the method 1800 further includes determining a first quality metric of the DL beam based on the periodic or semi-persistently scheduled CSI-RS received at the first time. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0201] In some aspects, the method 1800 further includes determining a second quality metric of the UL beam based on a periodic or semi-persistently scheduled CSI-RS received at a second time different from the first time. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0202] In some aspects, method 1800 further includes determining a first quality metric based on the first non-periodic CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0203] In some aspects, the method 1800 further includes determining a second quality metric based on a second aperiodic CSI-RS that is a repetition of the first aperiodic CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0204] In some aspects, method 1800 further includes determining a first quality metric based on the non-periodic CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0205] In some aspects, method 1800 further includes determining a second quality metric based on the non-periodic CSI-RS. In some cases, the operation of this step refers to referring to Fig. 20 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.

[0206] In one aspect, method 1800 or any aspect related thereto may be performed by an apparatus such as Fig. 20 The method 1800 is performed by a communication device 2000 that includes various components operable, configured, or adapted to perform the method 1800. The communication device 2000 is described in more detail below.

[0207] Please note that Fig.18 This is merely one example of a method, and other methods including fewer, additional, or alternative steps may also be consistent with the present disclosure.

[0208] Example Operations of Network Entities

[0209] Fig.19 A method for transmitting data to a network entity such as Figure 1 and Figure 3 BS102 or as relative to Figure 2 An example of a method 1900 for performing wireless communications using a decomposed base station) as discussed.

[0210] Method 1900 begins at step 1905, where an indication is transmitted for reporting the beam quality of the decoupled UL beam and DL beam. In some cases, the operation of this step refers to the operation of Fig.21 The described circuits for transmitting and / or codes for transmitting may be executed by the circuits and / or codes.

[0211] Then, method 1900 proceeds to step 1910, where a report of the beam quality of at least one of the UL beam or the DL beam is received in accordance with the indication. In some cases, the operation of this step refers to the operation of Fig.21 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.

[0212] In some aspects, transmitting the indication includes sending a configuration for reporting a first quality metric of a DL beam or a second quality metric of a UL beam; and receiving the report includes receiving the report according to the configuration.

[0213] In some aspects, the configuration configures the UE to report only the first quality metric of the DL beam.

[0214] In some aspects, the configuration configures the UE to report the second quality metric for the UL beam only.

[0215] In some aspects, the configuration configures the UE to report a first quality metric for a DL beam and a second quality metric for a UL beam.

[0216] In some aspects, the first quality metric is based on a first periodic or semi-persistently scheduled CSI-RS; and the second quality metric is based on a second periodic or semi-persistently scheduled CSI-RS different from the first periodic or semi-persistently scheduled CSI-RS.

[0217] In some aspects, the method 1900 further includes sending a configuration of a first periodic or semi-persistently scheduled CSI-RS and a second periodic or semi-persistently scheduled CSI-RS. In some cases, the operation of this step refers to the configuration of Fig.21 The described circuits for transmitting and / or codes for transmitting, or may be executed by the circuits and / or the codes.

[0218] In some aspects, the first quality metric or the second quality metric is based on an aperiodic CSI-RS.

[0219] In some aspects, the first quality metric is based on a first aperiodic CSI-RS; and the second quality metric is based on a second aperiodic CSI-RS that is a repetition of the first aperiodic CSI-RS.

[0220] In some aspects, the first quality metric is based on an aperiodic CSI-RS; and the second quality metric is based on an aperiodic CSI-RS.

[0221] In some aspects, transmitting the indication comprises receiving a UL signal via a UL beam and sending a DL signal via a DL beam.

[0222] In some aspects, the report includes a quality metric of the DL beam and an indicator that the UL beam is decoupled from the DL beam.

[0223] In some aspects, the report includes a first quality metric for the DL beam, a second quality metric for the UL beam, and an indicator that the UL beam is decoupled from the DL beam.

[0224] In some aspects, a first quality metric of a DL beam is based on a periodic or semi-persistently scheduled CSI-RS sent at a first time; and a second quality metric of a UL beam is based on a periodic or semi-persistently scheduled CSI-RS sent at a second time different from the first time.

[0225] In some aspects, the first quality metric is based on a first aperiodic CSI-RS; and the second quality metric is based on a second aperiodic CSI-RS that is a repetition of the first aperiodic CSI-RS.

[0226] In some aspects, the first quality metric is based on an aperiodic CSI-RS; and the second quality metric is based on an aperiodic CSI-RS.

[0227] In one aspect, method 1900 or any aspect related thereto may be performed by an apparatus such as Fig.21 The method 1900 is performed by a communication device 2100 that includes various components operable, configured, or adapted to perform the method 1900. The communication device 2100 is described in more detail below.

[0228] Please note that Fig.19 This is merely one example of a method, and other methods including fewer, additional, or alternative steps may also be consistent with the present disclosure.

[0229] Example Communication Device

[0230] Fig. 20 Depicted are aspects of an example communications device 2000. In some examples, the communications device 2000 is a user equipment (UE), such as described above with respect to Figure 1 and Figure 3UE 104 is described.

[0231] The communication device 2000 includes a processing system 2005 coupled to a transceiver 2065 (e.g., a transmitter and / or a receiver). The transceiver 2065 is configured to transmit and receive signals for the communication device 2000, such as the various signals described herein, via an antenna 2070. The processing system 2005 may be configured to perform processing functions for the communication device 2000, including processing signals received and / or to be transmitted by the communication device 2000.

[0232] The processing system 2005 includes one or more processors 2010. In various aspects, such as with respect to Figure 3 As depicted, the one or more processors 2010 may represent one or more of the receive processor 358, the transmit processor 364, the TX MIMO processor 366, and / or the controller / processor 380. The one or more processors 2010 are coupled to the computer-readable medium / memory 2035 via the bus 2060. In certain aspects, the computer-readable medium / memory 2035 is configured to store instructions (e.g., computer-executable code) that, when executed by the one or more processors 2010, cause the one or more processors 2010 to perform operations with respect to the computer-readable medium / memory 2035. Fig.18 The described method 1800 or any aspect related thereto. Note that references to a processor performing a function of the communication device 2000 may include one or more processors 2010 performing that function of the communication device 2000.

[0233] In the depicted example, computer readable medium / memory 2035 stores code (e.g., executable instructions), such as code for obtaining 2040, code for reporting 2045, code for determining 2050, and code for receiving 2055. Processing of code for obtaining 2040, code for reporting 2045, code for determining 2050, and code for receiving 2055 may cause communication device 2000 to perform operations related to Fig.18 The method 1800 described herein or any aspect related thereto.

[0234] The one or more processors 2010 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 2035, including circuits such as circuits for obtaining 2015, circuits for reporting 2020, circuits for determining 2025, and circuits for receiving 2030. Processing using the circuits for obtaining 2015, the circuits for reporting 2020, the circuits for determining 2025, and the circuits for receiving 2030 may cause the communication device 2000 to perform operations related to Fig.18 The method 1800 described herein or any aspect related thereto.

[0235] The various components of the communication device 2000 may be provided for performing operations relative to Fig.18 The components of the described method 1800 or any aspect thereof. For example, the components for sending, transmitting, or outputting for sending may include Figure 3 The transceiver 354 and / or antenna 352 of the UE 104 illustrated in FIG. Fig. 20 The transceiver 2065 and antenna 2070 of the communication device 2000 in FIG. 1 may include Figure 3 The transceiver 354 and / or antenna 352 and / or Fig. 20 The transceiver 2065 and antenna 2070 of the communication device 2000.

[0236] Fig.21 Various aspects of an example communication device 2100 are depicted. In some aspects, the communication device 2100 is a network entity such as Figure 1 and Figure 3 BS102, or as Figure 2 The decomposed base station in question.

[0237] The communication device 2100 includes a processing system 2105 coupled to a transceiver 2155 (e.g., a transmitter and / or a receiver) and / or a network interface 2165. The transceiver 2155 is configured to transmit and receive signals of the communication device 2100 via an antenna 2160, such as the various signals described herein. The network interface 2165 is configured to transmit and receive signals of the communication device 2100 via a communication link (such as the various signals described herein). Figure 2 The processing system 2105 may be configured to perform processing functions of the communication device 2100, including processing signals received and / or to be transmitted by the communication device 2100.

[0238] The processing system 2105 includes one or more processors 2110. In various aspects, such as with respect to Figure 3 As described, the one or more processors 2110 may represent one or more of the receive processor 338, the transmit processor 320, the TX MIMO processor 330, and / or the controller / processor 340. The one or more processors 2110 are coupled to the computer-readable medium / memory 2130 via the bus 2150. In certain aspects, the computer-readable medium / memory 2130 is configured to store instructions (e.g., computer-executable code) that, when executed by the one or more processors 2110, cause the one or more processors 2110 to perform operations with respect to the computer-readable medium / memory 2130. Fig.19The described method 1900 or any aspect related thereto. Note that references to a processor of the communication device 2100 that performs a function may include one or more processors 2110 of the communication device 2100 that perform the function.

[0239] In the depicted example, computer readable medium / memory 2130 stores code (e.g., executable instructions) such as code for transmitting 2135, code for receiving 2140, and code for sending 2145. Processing of code for transmitting 2135, code for receiving 2140, and code for sending 2145 may cause communication device 2100 to perform operations with respect to Fig.19 The described method 1900 or any aspect related thereto.

[0240] The one or more processors 2110 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 2130, including circuits such as circuits for transmitting 2115, circuits for receiving 2120, and circuits for sending 2125. Processing performed by the circuits for transmitting 2115, the circuits for receiving 2120, and the circuits for sending 2125 may enable the communication device 2100 to perform operations with respect to Fig.19 The described method 1900 or any aspect related thereto.

[0241] The various components of the communication device 2100 may be provided for performing the operations described in relation to Fig.19 The components of the described method 1900 or any aspect related thereto. The components for sending, transmitting or outputting for sending may include Figure 3 The transceiver 332 and / or antenna 334 and / or Fig.21 The transceiver 2155 and antenna 2160 of the communication device 2100 in FIG. 1 may include Figure 3 The transceiver 332 and / or antenna 334 and / or Fig.21 The transceiver 2155 and antenna 2160 of the communication device 2100.

[0242] Sample Clauses

[0243] Specific implementation examples are described in the following numbered clauses:

[0244] Clause 1: A method for wireless communication by a UE, the method comprising: obtaining an indication for reporting beam quality of a decoupled UL beam and DL beam; and reporting the beam quality of at least one of the UL beam or the DL beam based on the indication.

[0245] Clause 2: A method according to clause 1, wherein: obtaining the indication includes receiving a configuration for reporting a first quality metric of the DL beam or a second quality metric of the UL beam; and reporting the beam quality includes sending a report according to the configuration.

[0246] Clause 3: A method as described in clause 2, wherein the configuration configures the UE to report only the first quality metric of the DL beam.

[0247] Clause 4: A method as described in clause 2, wherein the configuration configures the UE to report only the second quality metric of the UL beam.

[0248] Clause 5: A method according to clause 2, wherein: the configuration configures the UE to report the first quality metric of the DL beam and the second quality metric of the UL beam.

[0249] Clause 6: The method according to Clause 2 further includes: determining the first quality metric based on a first periodic or semi-persistently scheduled CSI-RS; and determining the second quality metric based on a second periodic or semi-persistently scheduled CSI-RS different from the first periodic or semi-persistently scheduled CSI-RS.

[0250] Clause 7: The method of clause 6, further comprising: receiving a configuration of the first periodic or semi-persistently scheduled CSI-RS and the second periodic or semi-persistently scheduled CSI-RS.

[0251] Clause 8: The method of clause 2, further comprising determining the first quality metric or the second quality metric based on an aperiodic CSI-RS.

[0252] Clause 9: The method of clause 2, further comprising: determining the first quality metric based on a first non-periodic CSI-RS; and determining the second quality metric based on a second non-periodic CSI-RS that is a repetition of the first non-periodic CSI-RS.

[0253] Clause 10: The method of clause 2, further comprising: determining the first quality metric based on an aperiodic CSI-RS; and determining the second quality metric based on the aperiodic CSI-RS.

[0254] Clause 11: A method as described in any of clauses 1 to 10, wherein obtaining the indication comprises sending a UL signal to a network entity via the UL beam and receiving a DL signal from the network entity via the DL beam.

[0255] Clause 12: The method of clause 11, wherein reporting the beam quality comprises sending a report including a quality metric of the DL beam and an indicator that the UL beam is decoupled from the DL beam.

[0256] Clause 13: The method of clause 11, wherein reporting the beam quality comprises sending a report comprising a first quality metric of the DL beam, a second quality metric of the UL beam, and an indicator that the UL beam is decoupled from the DL beam.

[0257] Clause 14: The method according to Clause 11 further includes: determining a first quality metric of the DL beam based on a periodically or semi-persistently scheduled CSI-RS received at a first time; and determining a second quality metric of the UL beam based on the periodically or semi-persistently scheduled CSI-RS received at a second time different from the first time.

[0258] Clause 15: The method of clause 14, further comprising: determining the first quality metric based on a first aperiodic CSI-RS; and determining the second quality metric based on a second aperiodic CSI-RS that is a repetition of the first aperiodic CSI-RS.

[0259] Clause 16: The method of clause 14, further comprising: determining the first quality metric based on an aperiodic CSI-RS; and determining the second quality metric based on the aperiodic CSI-RS.

[0260] Clause 17: A method for wireless communications by a network entity, the method comprising: transmitting an indication for reporting beam quality of a decoupled UL beam and DL beam; and receiving a report of the beam quality of at least one of the UL beam or the DL beam based on the indication.

[0261] Clause 18: A method according to clause 17, wherein: transmitting the indication includes sending a configuration for reporting a first quality metric of the DL beam or a second quality metric of the UL beam; and receiving the report includes receiving the report according to the configuration.

[0262] Clause 19: A method as described in clause 18, wherein the configuration configures the UE to report only the first quality metric of the DL beam.

[0263] Clause 20: A method as described in clause 18, wherein the configuration configures the UE to report only the second quality metric of the UL beam.

[0264] Clause 21: A method according to clause 18, wherein: the configuration configures the UE to report the first quality metric of the DL beam and the second quality metric of the UL beam.

[0265] Clause 22: A method according to clause 18, wherein: the first quality metric is based on a first periodic or semi-persistently scheduled CSI-RS; and the second quality metric is based on a second periodic or semi-persistently scheduled CSI-RS different from the first periodic or semi-persistently scheduled CSI-RS.

[0266] Clause 23: The method of clause 22, further comprising: transmitting a configuration of the first periodic or semi-persistently scheduled CSI-RS and the second periodic or semi-persistently scheduled CSI-RS.

[0267] Clause 24: The method of clause 18, wherein the first quality metric or the second quality metric is based on an aperiodic CSI-RS.

[0268] Clause 25: The method of clause 18, wherein: the first quality metric is based on a first aperiodic CSI-RS; and the second quality metric is based on a second aperiodic CSI-RS that is a repetition of the first aperiodic CSI-RS.

[0269] Clause 26: The method of clause 18, wherein: the first quality metric is based on an aperiodic CSI-RS; and the second quality metric is based on the aperiodic CSI-RS.

[0270] Clause 27: A method as described in any of clauses 17 to 26, wherein transmitting the indication comprises receiving a UL signal via the UL beam and sending a DL signal via the DL beam.

[0271] Clause 28: The method of clause 27, wherein the report comprises a quality metric of the DL beam and an indicator that the UL beam is decoupled from the DL beam.

[0272] Clause 29: The method of clause 27, wherein the report comprises a first quality metric of the DL beam, a second quality metric of the UL beam, and an indicator that the UL beam is decoupled from the DL beam.

[0273] Clause 30: A method according to clause 27, wherein: the first quality metric of the DL beam is based on a periodically or semi-persistently scheduled CSI-RS sent at a first time; and the second quality metric of the UL beam is based on the periodically or semi-persistently scheduled CSI-RS sent at a second time different from the first time.

[0274] Clause 31: The method of clause 30, wherein: the first quality metric is based on a first aperiodic CSI-RS; and the second quality metric is based on a second aperiodic CSI-RS that is a repetition of the first aperiodic CSI-RS.

[0275] Clause 32: The method of clause 30, wherein: the first quality metric is based on an aperiodic CSI-RS; and the second quality metric is based on the aperiodic CSI-RS.

[0276] Clause 33: An apparatus comprising: a memory including executable instructions; and a processor configured to execute the executable instructions and cause the apparatus to perform the method of any one of clauses 1 to 32.

[0277] Clause 34: An apparatus comprising means for performing the method of any of clauses 1 to 32.

[0278] Clause 35: A non-transitory computer readable medium comprising executable instructions which, when executed by a processor of an apparatus, cause the apparatus to perform the method of any one of clauses 1 to 32.

[0279] Clause 36: A computer program product embodied on a computer readable storage medium, the computer readable storage medium comprising code for performing the method according to any one of clauses 1 to 32.

[0280] Additional considerations

[0281] 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, without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Various examples may omit, replace, or add various processes or components as appropriate. For example, the described methods may be performed in a different order from the described order, and various actions may be added, omitted, or combined. In addition, the 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 a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functionality, or structures and functionality other than the various aspects of the present disclosure set forth herein or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0282] The various illustrative logic blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or performed using a general purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. Although a general purpose processor may be a microprocessor, in an alternative, 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, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, a system on a chip (SoC), or any other such configuration.

[0283] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items (including single members). 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 multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other ordering of a, b, and c).

[0284] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include computing, calculating, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, and the like. Additionally, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. Additionally, "determining" may include resolving, selecting, choosing, establishing, and the like.

[0285] The method disclosed herein includes one or more actions for implementing the method. The method actions may be interchangeable with each other without departing from the scope of the claims. In other words, unless a specified order of actions is specified, the order and / or use of specific actions may be modified without departing from the scope of the claims. In addition, the various operations of the above-mentioned method may be performed by any suitable component capable of performing the corresponding function. The 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.

[0286] The following claims are not intended to be limited to the various aspects shown herein, but should be given the full scope consistent with the language of the claims. Within the claims, unless explicitly stated, reference to an element in the singular form is not intended to mean "one and only one", but "one or more". Unless otherwise specified, the term "some" refers to one or more. Any claim element is not interpreted according to the provisions of 35 U.S.C. § 112 (f) unless the element is explicitly stated using the phrase "parts for...". All structural and functional equivalents of the elements throughout the various aspects described in this disclosure that are known or will be known later to a person of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, regardless of whether such disclosure is explicitly stated in the claims, anything disclosed herein is not intended to be disclosed to the public.

Claims

1. A method for wireless communication by a user equipment (UE), the method comprising: obtaining an indication for reporting beam quality of a decoupled uplink (UL) beam and a downlink (DL) beam; as well as A beam quality of at least one of the UL beam or the DL beam is reported according to the indication.

2. The method according to claim 1, wherein: Obtaining the indication comprises receiving a configuration for reporting a first quality metric of the DL beam or a second quality metric of the UL beam; and Reporting the beam quality includes sending a report according to the configuration.

3. The method of claim 2, wherein the configuration configures the UE to report only the first quality metric of the DL beam.

4. The method of claim 2, wherein the configuration configures the UE to report only the second quality metric of the UL beam.

5. The method according to claim 2, wherein: The configuration configures the UE to report the first quality metric of the DL beam and the second quality metric of the UL beam.

6. The method according to claim 2, further comprising: determining the first quality metric based on a first periodic or semi-persistently scheduled channel state information (CSI) reference signal (CSI-RS); as well as The second quality metric is determined based on a second periodic or semi-persistently scheduled CSI-RS different from the first periodic or semi-persistently scheduled CSI-RS.

7. The method according to claim 6, further comprising: Configuration of the first periodic or semi-persistently scheduled CSI-RS and the second periodic or semi-persistently scheduled CSI-RS is received.

8. The method according to claim 2, further comprising: The first quality metric or the second quality metric is determined based on an aperiodic channel state information (CSI) reference signal (CSI-RS).

9. The method according to claim 2, further comprising: determining the first quality metric based on a first aperiodic channel state information (CSI) reference signal (CSI-RS); as well as The second quality metric is determined based on a second aperiodic CSI-RS that is a repetition of the first aperiodic CSI-RS.

10. The method according to claim 2, further comprising: determining the first quality metric based on an aperiodic channel state information (CSI) reference signal (CSI-RS); as well as The second quality metric is determined based on the aperiodic CSI-RS.

11. The method of claim 1, wherein obtaining the indication comprises sending an UL signal to a network entity via the UL beam and receiving a DL signal from the network entity via the DL beam.

12. The method of claim 11, wherein reporting the beam quality comprises sending a report including a quality metric of the DL beam and an indicator that the UL beam is decoupled from the DL beam.

13. The method of claim 11, wherein reporting the beam quality comprises sending a report including a first quality metric of the DL beam, a second quality metric of the UL beam, and an indicator that the UL beam is decoupled from the DL beam.

14. The method according to claim 11, further comprising: determining a first quality metric of the DL beam based on a periodically or semi-persistently scheduled channel state information (CSI) reference signal (CSI-RS) received at a first time; as well as A second quality metric of the UL beam is determined based on the periodic or semi-persistently scheduled CSI-RS received at a second time different from the first time.

15. The method according to claim 14, further comprising: determining the first quality metric based on a first aperiodic channel state information (CSI) reference signal (CSI-RS); as well as The second quality metric is determined based on a second aperiodic CSI-RS that is a repetition of the first aperiodic CSI-RS.

16. The method according to claim 14, further comprising: determining the first quality metric based on an aperiodic channel state information (CSI) reference signal (CSI-RS); as well as The second quality metric is determined based on the aperiodic CSI-RS.

17. A method for wireless communication by a network entity, the method comprising: transmitting an indication for reporting beam quality of a decoupled uplink (UL) beam and a downlink (DL) beam; as well as A report of a beam quality of at least one of the UL beam or the DL beam is received based on the indication.

18. The method of claim 17, wherein: Transmitting the indication comprises sending a configuration for reporting a first quality metric of the DL beam or a second quality metric of the UL beam; and Receiving the report includes receiving the report according to the configuration.

19. The method of claim 18, wherein the configuration configures a user equipment (UE) to report only the first quality metric of the DL beam.

20. The method of claim 18, wherein the configuration configures a user equipment (UE) to report only the second quality metric of the UL beam.

21. The method of claim 18, wherein: The configuration configures a user equipment (UE) to report the first quality metric of the DL beam and the second quality metric of the UL beam.

22. The method of claim 18, wherein: The first quality metric is based on a first periodic or semi-persistently scheduled channel state information (CSI) reference signal (CSI-RS); and The second quality metric is based on a second periodic or semi-persistently scheduled CSI-RS different from the first periodic or semi-persistently scheduled CSI-RS.

23. The method according to claim 22, further comprising: The configuration of the first periodic or semi-persistently scheduled CSI-RS and the second periodic or semi-persistently scheduled CSI-RS is transmitted.

24. The method of claim 18, wherein the first quality metric or the second quality metric is based on an aperiodic channel state information (CSI) reference signal (CSI-RS).

25. The method of claim 18, wherein: The first quality metric is based on a first aperiodic channel state information (CSI) reference signal (CSI-RS); and The second quality metric is based on a second aperiodic CSI-RS that is a repetition of the first aperiodic CSI-RS.

26. The method of claim 18, wherein: The first quality metric is based on an aperiodic channel state information (CSI) reference signal (CSI-RS); and The second quality metric is based on the aperiodic CSI-RS.

27. The method of claim 17, wherein transmitting the indication comprises receiving a UL signal via the UL beam and sending a DL signal via the DL beam.

28. The method of claim 27, wherein the report includes a quality metric of the DL beam and an indicator that the UL beam is decoupled from the DL beam.

29. A user equipment configured for wireless communication, the user equipment comprising: a memory including computer executable instructions; as well as a processor configured to execute the computer-executable instructions and cause the user equipment to: obtaining an indication for reporting beam quality of a decoupled uplink (UL) beam and a downlink (DL) beam; and A beam quality of at least one of the UL beam or the DL beam is reported according to the indication.

30. A network entity configured for wireless communication, the network entity comprising: a memory including computer executable instructions; as well as a processor configured to execute the computer executable instructions and cause the network entity to: transmitting an indication reporting beam quality of a decoupled uplink (UL) beam and a downlink (DL) beam; and A report of a beam quality of at least one of the UL beam or the DL beam is received based on the indication.

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