Transmission configuration indicator state activation based on downlink beam prediction
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2023-05-03
- Publication Date
- 2026-03-11
Smart Images

Figure CN2023091943_07112024_PF_FP_ABST
Abstract
Description
TRANSMISSION CONFIGURATION INDICATOR STATE ACTIVATION BASED ON DOWNLINK BEAM PREDICTION
[0001] FIELD OF TECHNOLOGY
[0002] The following relates to wireless communications, including transmission configuration indicator state activation based on downlink beam prediction.BACKGROUND
[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .
[0004] SUMMARY
[0005] The described techniques relate to improved methods, systems, devices, and apparatuses that support transmission configuration indicator state activation based on downlink (DL) beam prediction. For example, the described techniques enable a user equipment (UE) and a network entity to communicate in accordance with a transmission configuration indicator (TCI) state that is based on resources (e.g., channel measurement resources (CMRs) ) or virtual resources, which may be resources that were not used by the UE or network entity for communicating. The UE may receive an indication of the resources associated with a first set of TCI states activated for the UE. The UE also may receive an indication of the virtual resource associated with a second set of TCI states different from the first set of TCI states. The UE may receive a control message indicating a TCI state associated with a virtual resource based on a beam prediction procedure associated with the virtual resource, and may perform subsequent communications in accordance with the indicated TCI state.
[0006] A method for wireless communication at a UE is described. The method may include receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource, and communicating in accordance with the TCI state.
[0007] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, receive a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource, and communicating in accordance with the TCI state.
[0008] Another apparatus for wireless communication at a UE is described. The apparatus may include means for receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, means for receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource, and means for communicating in accordance with the TCI state.
[0009] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to receive an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, receive a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource, and communicating in accordance with the TCI state.
[0010] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first set of resources includes one or more DL resources and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for receiving one or more reference signals via the first set of resources for measurement at the UE and performing one or more channel measurements for the first set of resources, where the beam prediction procedure may be based on measurements of the one or more reference signals, the measurements of the one or more reference signals based on the one or more channel measurements.
[0011] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first set of resources includes one or more uplink (UL) resources and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for transmitting one or more reference signals via the first set of resources.
[0012] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the second set of resources includes one or more DL resources and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for predicting measurements of one or more reference signals for the second set of resources based on communicating the one or more reference signals via the first set of resources and transmitting a report indicating the predicted measurements, where the TCI state may be based on the report.
[0013] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the second set of resources includes one or more UL resources and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for predicting measurements of one or more reference signals for the second set of resources based on communicating the one or more reference signals via the first set of resources.
[0014] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, communicating in accordance with the TCI state may include operations, features, means, or instructions for communicating using a spatial filter, the spatial filter based on the TCI state and the resource.
[0015] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control message includes a first parameter indicating the resource and a second parameter indicating a resource of the first set of resources.
[0016] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control message indicates that the TCI state may be associated with a first TCI state type and a reference resource for the TCI state may be based on the resource.
[0017] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the control message may include operations, features, means, or instructions for receiving a media access control (MAC) message indicating a TCI state identifier and one or more bits indicating the first TCI state type.
[0018] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control message may be a MAC message and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for receiving a second MAC message indicating a second TCI state associated with a resource of the first set of resources.
[0019] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving the MAC message may be based on the MAC message indicating the TCI state associated with the resource.
[0020] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control message indicates a TCI state identifier and one or more bits indicating a transmission direction associated with the TCI state.
[0021] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, receiving the control message may include operations, features, means, or instructions for receiving DL control information (DCI) indicating that the UE may be to switch the TCI state.
[0022] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the DCI includes a TCI switching field indicating a MAC message for activating the TCI state.
[0023] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, communicating in accordance with the TCI state may include operations, features, means, or instructions for receiving a DL message via one or more transmission and reception points in accordance with the TCI state.
[0024] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, communicating in accordance with the TCI state may include operations, features, means, or instructions for transmitting an UL message including at least one of a sounding reference signal (SRS) , a physical UL control channel (PUCCH) , or a physical UL shared channel (PUSCH) in accordance with the TCI state.
[0025] A method for wireless communication at a network entity is described. The method may include transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, transmitting a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource, and communicating in accordance with the TCI state.
[0026] An apparatus for wireless communication at a network entity is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to transmit an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, transmit a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource, and communicating in accordance with the TCI state.
[0027] Another apparatus for wireless communication at a network entity is described. The apparatus may include means for transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, means for transmitting a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource, and means for communicating in accordance with the TCI state.
[0028] A non-transitory computer-readable medium storing code for wireless communication at a network entity is described. The code may include instructions executable by a processor to transmit an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, transmit a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource, and communicating in accordance with the TCI state.
[0029] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first set of resources includes one or more DL resources and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for transmitting one or more reference signals via the first set of resources for measurement at the UE.
[0030] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the first set of resources includes one or more UL resources and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for receiving one or more reference signals via the first set of resources for measurement at the UE.
[0031] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, communicating in accordance with the TCI state may include operations, features, means, or instructions for communicating using a spatial filter, the spatial filter based on the TCI state and the resource.
[0032] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control message includes a first parameter indicating the resource and a second parameter indicating a resource of the first set of resources.
[0033] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control message indicates that the TCI state may be associated with a first TCI state type and a reference resource for the TCI state may be based on the resource.
[0034] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the control message may include operations, features, means, or instructions for transmitting a MAC message indicating a TCI state identifier and one or more bits indicating the first TCI state type.
[0035] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control message may be a MAC message and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for transmitting a second MAC message indicating a second TCI state associated with a resource of the first set of resources.
[0036] Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting the MAC message may be based on the MAC message indicating the TCI state associated with the resource.
[0037] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the control message indicates a TCI state identifier and one or more bits indicating a transmission direction associated with the TCI state.
[0038] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, transmitting the control message may include operations, features, means, or instructions for transmitting DCI indicating that the UE may be to switch the TCI state.
[0039] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, the DCI includes a TCI switching field indicating a MAC message for activating the TCI state.
[0040] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, communicating in accordance with the TCI state may include operations, features, means, or instructions for transmitting a DL message via one or more transmission and reception points in accordance with the TCI state.
[0041] In some examples of the method, apparatuses, and non-transitory computer-readable medium described herein, communicating in accordance with the TCI state may include operations, features, means, or instructions for receiving an UL message including at least one of an SRS, a PUCCH, or a PUSCH in accordance with the TCI state.BRIEF DESCRIPTION OF THE DRAWINGS
[0042] FIG. 1 shows an example of a wireless communications system that supports transmission configuration indicator (TCI) state activation based on downlink (DL) beam prediction in accordance with one or more aspects of the present disclosure.
[0043] FIG. 2 shows an example of a wireless communications system that supports transmission configuration indicator state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure.
[0044] FIGs. 3 through 5 show examples of a TCI state configuration diagrams that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure.
[0045] FIG. 6 shows an example of a process flow that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure.
[0046] FIGs. 7 and 8 show block diagrams of devices that support TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure.
[0047] FIG. 9 shows a block diagram of a communications manager that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure.
[0048] FIG. 10 shows a diagram of a system including a device that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure.
[0049] FIGs. 11 and 12 show block diagrams of devices that support TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure.
[0050] FIG. 13 shows a block diagram of a communications manager that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure.
[0051] FIG. 14 shows a diagram of a system including a device that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure.
[0052] FIGs. 15 through 22 show flowcharts illustrating methods that support TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0053] In some wireless communication systems, a user equipment (UE) may communicate with a network entity in accordance with a transmission configuration indicator (TCI) state, where a TCI state indicates quasi co-location (QCL) relationships between downlink (DL) reference signals and resources or beams used for communicating via the resources. The TCI state may be configured based on a reference resource that is used for transmission of one or more reference signals to the UE and measured by the UE to determine channel quality. For example, the UE may measure a reference signal transmitted by the network entity via the reference resource and report channel quality measurements to the network entity. The network entity may use the reference resource and corresponding channel quality measurements to configure a TCI state for the UE. In some cases, however, the UE may perform resource measurement predictions using virtual resources, which are resources that were not used by the network entity to transmit a reference signal, but may be used for subsequent communications between the UE and the network entity. In such cases, the network entity may be unable to configure a TCI state with a reference resource that corresponds to a virtual resource of a given type, or a reference resource that is based on virtual resources.
[0054] In some cases, a network entity may activate or switch TCI states at a UE, where the TCI states are based on beam predictions. A network entity may configure a UE with a TCI state, where a reference resource associated with the TCI state may be based on a virtual resource. Such a TCI state may be referred to as a virtual TCI state. If the network entity may configures the virtual TCI state for uplink (UL) transmissions, the virtual TCI state may be referred to as a virtual UL-TCI state. If the network entity configures the virtual TCI state for DL transmissions, the virtual TCI state may be referred to as a virtual DL-TCI state. In some cases, the UE or the network entity may apply spatial filters to transmissions for which the network entity applies the virtual TCI state. For example, if the TCI state is based on virtual DL resources, the UE may apply transmit spatial filters that correspond to (or are same as) the receive spatial filters that the UE identified for receiving the virtual DL resources. In some examples, a network entity may use a media access control (MAC) -control element (CE) to indicate a TCI state for the UE, but the MAC-CE may be insufficient to indicate the virtual TCI state (e.g., the MAC-CE may only support non-virtual TCI states) . Accordingly, the network entity may transmit an enhanced MAC-CE that supports indicating a virtual TCI state or a non-virtual TCI state, or both, or the network entity may transmit an additional MAC-CE dedicated for virtual TCI states.
[0055] By supporting TCI states of the virtual TCI state type, the UE may support reduced latency and reduced processing power by enabling more efficient TCI state activation and switching. For example, the UE may receive an indication of a TCI state where a source reference signal of the TCI state may not have been transmitted or received by the UE. Thus, the UE may save power at the UE because the UE may refrain from transmitting or receiving the reference signal associated with the TCI state before activating the TCI state at the UE. The UE may reduce an amount of time before activating a TCI state because the UE may be able to predict measurements of virtual resources, thereby reducing the quantity of resources that the UE receives and measurements that the UE performs. Accordingly, the UE may reduce latency of communications where the communications are based on a TCI state being activated because the UE or the network entity may support a virtual TCI state based on virtual resources.
[0056] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further described in the context of TCI state configuration diagrams and process flows. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to transmission configuration indicator state activation based on DL beam prediction.
[0057] FIG. 1 shows an example of a wireless communications system 100 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0058] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via one or more communication links 125 (e.g., a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
[0059] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices, such as other UEs 115 or network entities 105, as shown in FIG. 1.
[0060] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity described herein) , a UE 115 (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.
[0061] In some examples, network entities 105 may communicate with the core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via one or more backhaul communication links 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via a backhaul communication link 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via a core network 130) . In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication links 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) , one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
[0062] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140) .
[0063] In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 105 may include one or more of a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN Intelligent Controller (RIC) 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) 180 system, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations) . In some examples, one or more network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0064] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or more RUs 170) . In some cases, a functional split between a CU 160 and a DU 165, or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to one or more DUs 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to one or more RUs 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that are in communication via such communication links.
[0065] In wireless communications systems (e.g., wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) . In some cases, in an IAB network, one or more network entities 105 (e.g., IAB nodes 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as a donor entity or an IAB donor. One or more DUs 165 or one or more RUs 170 may be partially controlled by one or more CUs 160 associated with a donor network entity 105 (e.g., a donor base station 140) . The one or more donor network entities 105 (e.g., IAB donors) may be in communication with one or more additional network entities 105 (e.g., IAB nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120) . IAB nodes 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by DUs 165 of a coupled IAB donor. An IAB-MT may include an independent set of antennas for relay of communications with UEs 115, or may share the same antennas (e.g., of an RU 170) of an IAB node 104 used for access via the DU 165 of the IAB node 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB nodes 104 may include DUs 165 that support communication links with additional entities (e.g., IAB nodes 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., one or more IAB nodes 104 or components of IAB nodes 104) may be configured to operate according to the techniques described herein.
[0066] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support transmission configuration indicator state activation based on DL beam prediction as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., IAB nodes 104, DUs 165, CUs 160, RUs 170, RIC 175, SMO 180) .
[0067] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.
[0068] The UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
[0069] The UEs 115 and the network entities 105 may wirelessly communicate with one another via one or more communication links 125 (e.g., an access link) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined physical layer structure for supporting the communication links 125. For example, a carrier used for a communication link 125 may include a portion of a RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple DL component carriers and one or more UL component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network entity 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities 105) .
[0070] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) . In a system employing MCM techniques, a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) , such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
[0071] The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of Ts=1 / (Δfmax·Nf) seconds, for which Δfmax may represent a supported subcarrier spacing, and Nf may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
[0072] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0073] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
[0074] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a DL carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.
[0075] In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, the overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 provide coverage for various coverage areas 110 using the same or different radio access technologies.
[0076] The wireless communications system 100 may support synchronous or asynchronous operation. For synchronous operation, network entities 105 (e.g., base stations 140) may have similar frame timings, and transmissions from different network entities 105 may be approximately aligned in time. For asynchronous operation, network entities 105 may have different frame timings, and transmissions from different network entities 105 may, in some examples, not be aligned in time. The techniques described herein may be used for either synchronous or asynchronous operations.
[0077] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
[0078] In some examples, a UE 115 may be configured to support communicating directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
[0079] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
[0080] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
[0081] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include DL transmissions, UL transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0082] A network entity 105 (e.g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
[0083] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0084] A network entity 105 or a UE 115 may use beam sweeping techniques as part of beamforming operations. For example, a network entity 105 (e.g., a base station 140, an RU 170) may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted by a network entity 105 multiple times along different directions. For example, the network entity 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission. Transmissions along different beam directions may be used to identify (e.g., by a transmitting device, such as a network entity 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the network entity 105.
[0085] Some signals, such as data signals associated with a particular receiving device, may be transmitted by transmitting device (e.g., a transmitting network entity 105, a transmitting UE 115) along a single beam direction (e.g., a direction associated with the receiving device, such as a receiving network entity 105 or a receiving UE 115) . In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted along one or more beam directions. For example, a UE 115 may receive one or more of the signals transmitted by the network entity 105 along different directions and may report to the network entity 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
[0086] In some examples, transmissions by a device (e.g., by a network entity 105 or a UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or beamforming to generate a combined beam for transmission (e.g., from a network entity 105 to a UE 115) . The UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured set of beams across a system bandwidth or one or more sub-bands. The network entity 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS) ) , which may be precoded or unprecoded. The UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) . Although these techniques are described with reference to signals transmitted along one or more directions by a network entity 105 (e.g., a base station 140, an RU 170) , a UE 115 may employ similar techniques for transmitting signals multiple times along different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal along a single direction (e.g., for transmitting data to a receiving device) .
[0087] A receiving device (e.g., a UE 115) may perform reception operations in accordance with multiple receive configurations (e.g., directional listening) when receiving various signals from a receiving device (e.g., a network entity 105) , such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may perform reception in accordance with multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions. In some examples, a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) . The single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to- noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
[0088] The wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, communications at the bearer or PDCP layer may be IP-based. An RLC layer may perform packet segmentation and reassembly to communicate via logical channels. A MAC layer may perform priority handling and multiplexing of logical channels into transport channels. The MAC layer also may implement error detection techniques, error correction techniques, or both to support retransmissions to improve link efficiency. In the control plane, an RRC layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a network entity 105 or a core network 130 supporting radio bearers for user plane data. A PHY layer may map transport channels to physical channels.
[0089] The wireless communications system 100 may support various communication procedures. A UE 115 may start in an RRC idle state or an RRC inactive state. The UE 115 may perform an initial access with a network entity 105. The initial access may include synchronization signal blocks (SSBs) , beam sweeping, contention-based random access (CBRA) , RACH procedures (e.g., occasions, preambles) , or any combination thereof. The UE 115 and the network entity 105 in an RRC connected state, based on a successful initial access, may perform beam management procedures. For example, beam management procedures may support L1-signal to interference plus noise ratio (SINR) reporting, L1-reference signal received power (RSRP) reporting, overhead and latency reduction (e.g., component carrier aggregation group beam update, efficient UL beam update) , latency and efficiency enhancements (e.g., unified transmission configuration indicator (TCI) states, L1 and layer 2 (L2) -centric mobility, dynamic TCI update, UL multi-panel selection, maximum power extrapolation (MPE) mitigation, or any combination thereof.
[0090] In the RRC connected state, the UE 115 may perform beam failure detection based on channel quality measurements or beam measurements. Based on detecting one or more failed beams, the UE 115 may perform beam failure recovery. For example, the UE 115 may perform beam failure detection, beam failure recovery, or both, for primary cells (PCells) , primary and secondary cells (PSCells) , or secondary cells (SCells) using reference signals, physical DL control channel (PDCCH) block error rate (BLER) , contention-free random access (FRA) , link recovery requests, MAC-CE, or any combination thereof. In some cases, the UE 115 may perform fast recovery and restart beam management procedures. In other cases, the UE 115 may determine a radio link failure.
[0091] The wireless communications system 100 may support beam management, beam prediction in time, spatial domain for overhead and latency reduction, beam selection accuracy improvement, or any combination thereof. In some cases, the wireless communications system 100 may utilize artificial intelligence (AI) or machine learning (ML) techniques. UEs 115 and network entities 105 in the wireless communications system 100 may perform model training, model deployment, model inference, model monitoring, model updating, or a combination thereof, on an AI or ML model to assist in wireless communications methods.
[0092] In some examples of beam management (e.g., AI-based, ML-based beam management) , the network entity 105 may configure the UE 115 with two sets of beams for CSI measurement and prediction. The network entity may configure the UE 115 with a first set of beams (e.g., set A) . The UE may perform measurements on the first set of beams via a first set of resources (e.g., channel measurement resources (CMRs) ) . In some examples, the network entity may configure the UE 115 with a second set of beams (e.g., set B) . The UE may perform a beam prediction (e.g., spatial-domain DL beam prediction, temporal DL beam prediction) for the second set of beams based on measurement results, historic measurement results, or a combination thereof, of the first set of beams. In some cases, the UE 115 may use a second set of resources (e.g., CMRs, virtual resources) to perform the beam prediction, and the second set of resources may correspond to the second set of beams. The UE 115 may perform measurements using the first set of beams and the set of beams via resources in the same frequency range or in different frequency ranges (e.g., the first set of resources and the second set of resources may partially overlap in frequency, completely overlap in frequency, may correspond to adjacent frequency ranges or frequency bands or subbands, or may be entirely different from each other) .
[0093] In some examples, the first set of beams may be a subset of the second set of beams. In some examples, the first set of beams may have a same quantity of beams as the second set of beams, or the sets of beams (e.g., set A, set B) may have different quantities of beams. In some cases, the first set of beams may be associated with the second set of beams based on a fixed pattern, a random pattern, or a QCL relationship. The first set of beams may have different characteristics than the second set of beams. For example, the first set of beams may be wide (e.g., coarse) beams and the second set of beams may be narrow (e.g., fine) beams. In some examples, subsets of the second set of beams may correspond to individual coarse beams of the first set of beams (e.g., three narrow beams of the second set of beams may correspond to each coarse beam of the first set of beams) . The first set of beams may be for DL beam measurement, and the second set of beams may be for DL beam prediction. The first set of beams and the second set of beams may be indicated by codebook constructions.
[0094] In some cases, the UE 115 may perform beam prediction for an UL-transmission (Tx) beam via a DL reference signal (e.g., the UE 115 may have beam correspondence) . The UE 115 may predict L1-RSRPs for DL beams and the associated reception (Rx) beams, where the UE 115 may use the Rx beams for UL transmission if the UE 115 has beam correspondence. For example, the UL-Tx beam for a physical uplink shared channel (PUSCH) 220 may share the same spatial filter as the predicted Rx beam. In some cases, the UE 115 may perform beam prediction for an UL-Tx beam via an UL reference signal. The UE 115 may perform time domain beam prediction which may enable the UE 115 to predict one or more future PUSCH Tx beams. By utilizing time domain beam prediction, the UE 115 may support less frequent SRS transmission, which may support UE power reduction, UE SRS overhead reduction, or both.
[0095] Additionally, or alternatively, the UE 115 may perform spatial domain beam prediction which may allow the UE 115 to predict PUSCH Tx beams in non-sounded directions. In some examples, the UE 115 may use spatial domain beam prediction in combination with time domain beam prediction. By utilizing spatial domain beam prediction, the UE 115 may support spatially sparse SRS transmissions, which may support UE power reduction and UE SRS overhead reduction, or may support an optimized UL Tx beam, which may improve accuracy. In some examples, the UE 115 may perform frequency domain beam prediction, which may enable the UE 115 to predict higher frequency UL-Tx beams via lower frequency SRS (e.g., frequency range (FR) 1 / 3 to FR2, FR2x to FR2y, FR2 to FR4) . By utilizing frequency domain beam prediction, the UE 115 may support improved coverage or less RF phase shifting at lower frequency, which may support UE power reduction. Additionally, or alternatively, by performing frequency domain beam prediction, the UE 115 may support fewer beams at lower frequency, which may support UE SRS overhead reduction.
[0096] In some examples, a UE 115 may receive an indication of a first set of resources (e.g., corresponding to the first set of beams or set A) configured for reference signal communications between the UE 115 and a network entity 105 and of a second set of resources (e.g., corresponding to the second set of beams or set B) . The second set of resources may be different from and non-overlapping with the first set of resources. The first set of resources may be associated with a first set of TCI states activated for the UE 115 and the second set of resources may be associated with a second set of TCI states different from the first set of TCI states. The second set of resources may include virtual resources and the second set of TCI states may include virtual TCI states. The UE 115 may receive a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. In some examples, the UE 115 may communicate in accordance with the TCI state.
[0097] FIG. 2 shows an example of a wireless communications system 200 that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The wireless communications system 200 may implement aspects of or may be implemented by aspects of the wireless communications system 100. For example, the wireless communications system 200 may include a UE 115-a and a network entity 105-a, which may be examples of corresponding devices as described with reference to FIG. 1.
[0098] The network entity 105-a may transmit one or more reference signals to the UE 115-a, via a first set of DL resources using a first beam, for performing channel measurements. For example, the UE 115-a may perform channel measurements (e.g., L1-RSRP, L1-SINR, rank indicator (RI) , channel quality indicator (CQI) , PMI) for the first set of resources associated with the first beam. In some cases, the UE 115-a may report the channel measurements for the first set of DL resources to the network entity 105-a. The UE 115-b may receive an indication of the first set of resources configured for reference signal communications between the UE 115-b and the network entity 105-b. In some examples, the UE 115-b may also receive (e.g., in a same message as the one or more reference signals) a second set of DL resources associated with a beam 205 (e.g., a second beam, a DL beam) , different from and non-overlapping with the first set of DL resources and the first beam, respectively. The UE 115-a may use the second set of DL resources associated with the beam 205 for predicting channel measurements via a beam prediction procedure.
[0099] The UE 115-a may predict channel measurements for the second set of DL resources via the second set of DL resources without receiving any signal (e.g., a reference signal) . For example, the UE 115-a may predict the channel measurements for the second set of DL resources based on the channel measurements the UE 115-a obtains for the first set of DL resources. The UE 115-a may predict beam characteristics of the beam 205, or otherwise predict the beam 205, based on the beam prediction procedure. In such cases, because the UE 115-a may not receive a signal for the channel measurements, DL resources of the second set of DL resources may be referred to herein as virtual DL resources, and the beam 205 may be referred to herein as a virtual DL beam (e.g., a virtual DL-Tx beam) . In some examples, the UE 115-a may report the predicted channel measurements for the second set of DL resources to the network entity 105-a.
[0100] In some cases, the UE 115-a may predict channel measurements for a set of UL resources associated with a beam 210 (e.g., a UL beam) . For example, the UE 115-a may predict channel measurements for the set of UL resources without transmitting any signal (e.g., a reference signal) via the set of UL resources. In some examples, the UE 115-a may predict (e.g., via the beam prediction procedure) the channel measurements for the set of UL resources based on the channel measurements the UE 115-a obtains for the first set of DL resources, the channel measurements the UE 115-a predicts for the second set of DL resources, or a combination thereof. The UE 115-a may predict beam characteristics of the beam 210, or otherwise predict the beam 210, based on the beam prediction procedure. As the UE 115-a may refrain from transmitting a signal via the set of UL resources, the UL resources of the set of UL resources may be referred to herein as UL virtual resources, and the beam 210 may be referred to herein as a virtual UL beam. In some examples, the UE 115-a may report the predicted channel measurements for the set of UL resources to the network entity 105-a.
[0101] The network entity 105-a and the UE 115-a may communicate in accordance with a TCI state (e.g., UL TCI state, joint / DL TCI state) . The network entity 105-a may configure (e.g., via RRC configuration) or activate a TCI state at the UE 115-a. In some cases, the network entity 105-a may switch, via DL control information (DCI) , a TCI state for the UE 115-a (e.g., from a first TCI state to a second TCI state) . In some examples, the UE 115-a or the network entity 105-a may benefit from configuring, activating, or switching a TCI state that is based on a predicted beam (e.g., virtual beam) . However, the UE predicted DL-Tx beams may not be based on actual SSBs, channel state information (CSI) -reference signals (CSI-RSs) , or sounding reference signals (SRSs) . Accordingly, the types of reference signals supported for TCI state configuration diagrams (e.g., UL TCI state configuration diagrams) may be insufficient for activating or switching a TCI state that is based on a predicted beam.
[0102] For example, for UL-Tx beam prediction via DL reference signals using spatial domain DL-Tx beam prediction at the UE 115-a, the UE predicted DL-Tx beams may be based on virtual resources that are not actually transmitted, DL-angle of arrival (AoA) or DL-angle of departure (AoD) , or linear combinations of actually transmitted DL-Tx beams (e.g., linear combinations of SSB or CSI-RS resources) . In some examples, for UL-transmission (Tx) beam prediction via UL reference signals, the predicted UL-Tx beams may be based on virtual resources that are not actually transmitted, UL-AoA, or one or more linear combinations of actually transmitted UL-Tx beams (e.g., linear combinations of SRS resources) .
[0103] In some examples, the UE 115-a or the network entity 105-a may configure, activate or DCI switch a dedicated (e.g., new) TCI state whose Type-D quasi colocation (QCL) source resource is based on virtual beams. The dedicated TCI state may include a DL TCI state, a joint (e.g., DL and UL) TCI state, or an UL TCI state. However, a single-bit flag in a TCI-state activation MAC-CE indicating whether the associated TCI state identifier (ID) is regarding a joint / DL or UL TCI state may be insufficient for indicating the new TCI state. For example, the network entity 105-a may configure, activate, or DCI switch four types of TCI states with separate TCI state IDs. The four types of TCI states may include joint / DL TCI states, UL TCI states, joint / DL TCI states based on predicted virtual DL-Tx beams (e.g., virtual joint / DL TCI states) , and UL TCI states based on predicted virtual DL or virtual UL beams (e.g., virtual UL TCI states) . Thus, a unified TCI state activation MAC-CE may be insufficient for indicating the four types of TCI states. As such, as supported by the wireless communications system 200, the network entity 105-a may utilize or transmit a new MAC-CE to identify an increased quantity of TCI state types.
[0104] In some cases, the UE 115-a or the network entity 105-a may use a multi-transmission and reception point (mTRP) deployment, or operation. In such cases, the UE 115-a or the network entity 105-a may consider (e.g., utilize, configure) multiple TCI states per TCI-state codepoint, and the TCI states associated in a single TCI state codepoint may be associated with different types of TCI states (e.g., conventional TCI states, TCI states based on predicted virtual beams) . Thus, the MAC-CE for activating TCI states for mTRP may be insufficient for configuring different types of TCI states (e.g., virtual TCI states) . In some examples, the network entity 105-a may utilize or transmit a new MAC-CE to identify an increased quantity of TCI state types in an mTRP deployment.
[0105] In accordance with examples described herein, the network entity 105-a may introduce new types of resources (e.g., predicted resources, virtual resources) as a source reference signal for an UL-TCI state. The network entity 105-a may introduce new types of UL-TCI states whose Type-D QCL source is based on virtual UL beams (e.g., the beam 210) or virtual DL beams (e.g., the beam 205) . For example, a first set of resources (e.g., actual resources) may be associated with a first set of UL-TCI states activated for the UE and a second set of resources (e.g., virtual resources) may be associated with a second set of UL-TCI states different from the first set of UL-TCI states. In some cases, the network entity 105-a may enhance TCI state activation MAC-CEs to sufficiently identify the increased quantity of UL-TCI state types. In some examples, an UL-TCI state may be based on virtual DL beams (e.g., the beam 205) or virtual UL beams (e.g., the beam 210) . For example, the UE 115-a may be RRC configured, MAC-CE activated, or DCI switched with an UL-TCI state which may be applied to an SRS, a physical UL control channel (PUCCH) , or a PUSCH 220, where the reference source associated with the UL-TCI state is based on at least one of a virtual DL resource (e.g., associated with the beam 205) or a virtual UL resource (e.g., associated with the beam 210) . That is, the UE 115-b may receive a control message indicating an UL-TCI state associated with a resource (e.g., virtual DL resource) of the second set of resources based on a beam prediction procedure associated with the resource.
[0106] The virtual DL resource may include a DL prediction resource, a DL-AoD / AoA, a linear combination of SSB / CSI-RS resources, or a combination thereof. The virtual DL resource may not actually be received by the UE 115-a, but the virtual DL resource may have already been predicted and reported by the UE 115-a regarding channel characteristics (e.g., L1-RSRP, L1-SINR, RI, CQI, PMI) of the virtual resource. The virtual UL resource may include an UL prediction resource, an UL-AoD / AoA, a linear combination of SRS resources, or a combination thereof. The virtual UL resources may not actually be transmitted by the UE 115-a.
[0107] The UE 115-b may communicate in accordance with the UL-TCI state. For example, the UE 115-b may transmit an UL message including at least one of an SRS, a PUCCH, or a PUSCH 220 in accordance with the UL-TCI state. In some examples, one or more Tx spatial filters for the SRS, PUCCH, or PUSCH 220 may be based on virtual UL beams (e.g., beam 210) or virtual DL beams (e.g., beam 205) . The UE 115-b may communicate using a spatial filter, and the spatial filter may be based on the UL-TCI state, a resource (e.g., virtual resource) , or both. In an example, the UE 115-a may identify one or more Rx spatial filters for virtually receiving a virtual DL resource (e.g., using the beam 205) . If the reference source associated with the UL-TCI state is based on virtual DL resources, the UE 115-a may apply one or more Tx spatial filters that are the same as, or similar to, the identified one or more Rx spatial filters. For example, the UE 115-a may transmit an applicable SRS, PUCCH, or PUSCH 220 configured for, activated with, or switched to the virtual UL-TCI state using the Tx spatial filters. Accordingly, an UL-Tx beam 215 for the PUSCH 220 may share the same spatial filter as the beam 205 (e.g., a predicted Rx beam) .
[0108] When used for transmitting the PUSCH 220, the network entity 105-a may indicate the spatial filter (e.g., Tx spatial filter) to the UE 115-a based on the virtual UL-TCI state (e.g., UL-TCI state based on virtual DL / UL beams predicted by the UE 115-a) . In another example, the UE 115-a may identify one or more Tx spatial filters for virtually transmitting a virtual UL resource (e.g., using the beam 210) . If the reference source associated with the UL-TCI state is based on virtual UL resources, the UE 115-amay apply one or more Tx spatial filters the same as, or similar to, the Tx spatial filters the UE 115-a used for virtually transmitting the virtual UL resources. For example, the UE 115-a may transmit the applicable SRS, PUCCH, or PUSCH 220 switched to the virtual UL-TCI state using the applied Tx spatial filters.
[0109] The network entity 105-a may configure (e.g., RRC configure) virtual DL or virtual UL beams for UL-TCI states (e.g., as a source reference signal for the UL-TCI state) . In some cases, the network entity 105-a may reuse an RRC configuration for UL-TCI states (e.g., TCI-UL-State-r17) by supplying additional sub-information elements (IEs) (e.g., parameters) in the RRC configuration. For example, the network entity 105-a may include sub-IEs (e.g., a sub-IE virtualSourceResource-r19) under the RRC configuration (e.g., directly under TCI-UL-State-r17) , which may include or indicate the DL virtual resources or UL virtual resources associated with the UL-TCI state. That is, the UE 115 may receive a control message (e.g., RRC message) including a first parameter (e.g., virtualSourceResource-r19) indicating a resource (e.g., virtual resource) and a second parameter (e.g., referenceSignal-r17) indicating a resource of a first set of resources. The network entity 105-a may not configure an actual resource for the UL-TCI state and a virtual resource for the UL-TCI state at the same time (e.g., referenceSignal-r17 and virtualSourceResource-r19 may not be expected to be configured simultaneously) . In some cases, additional sub-IEs under the sub-IE of a reference signal for the UL-TCI state (e.g., referenceSignal-r17 under TCI-UL-State-r17) may respectively include the DL virtual resources or UL virtual resources for the UL-TCI state.
[0110] In some examples, the network entity 105-a may introduce a dedicated (e.g., new) virtual UL-TCI state differentiated from a conventional UL-TCI state. For example, the network entity 105-a may indicate or configure the dedicated UL-TCI state, whose reference source (e.g., source resource, reference signal) is based on one or more DL virtual resources or one or more UL virtual resources, in a newly introduced dedicated IE (e.g., Virtual-TCI-UL-State-r19) that is differentiated from the IE conventionally used for configuring UL-TCI states (e.g., TCI-UL-State-r17) . That is, a control message (e.g., RRC message) may indicate that the UL-TCI state is associated with a first TCI state type (e.g., virtual UL-TCI state) , where a reference resource for the UL-TCI state is based on the DL virtual resource or UL virtual resource.
[0111] In some examples, the network entity 105-a may introduce new types of resources (e.g., predicted resources, virtual resources) as a source reference signal for a DL-TCI state. In some cases, the network entity 105-a may apply the DL-TCI state to both DL and UL communications at the UE 115-a, and the DL-TCI state may otherwise be referred to herein as a joint TCI state (e.g., joint / DL TCI state) . The network entity 105-a may introduce new types of DL-TCI states whose Type-D QCL source is based on virtual UL beams (e.g., the beam 210) or virtual DL beams (e.g., the beam 205) . For example, a first set of resources (e.g., actual resources) may be associated with a first set of DL-TCI states activated for the UE and a second set of resources (e.g., virtual resources) may be associated with a second set of DL-TCI states different from the first set of DL-TCI states. In some cases, the network entity 105-a may enhance TCI state activation MAC-CEs to sufficiently identify the increased quantity of DL-TCI state types. In some examples, a DL-TCI state may be based on virtual DL beams (e.g., the beam 205) or virtual UL beams (e.g., the beam 210) . For example, the UE 115-a may be RRC configured, MAC-CE activated, or DCI switched with a DL-TCI state which may be applied to an SRS, a physical DL control channel (PDCCH) , or a physical DL shared channel (PDSCH) 230, where the reference source associated with the DL-TCI state is based on at least one of a virtual DL resource (e.g., associated with the beam 205) or a virtual UL resource (e.g., associated with the beam 210) . That is, the UE 115-b may receive a control message indicating a DL-TCI state associated with a resource (e.g., virtual DL resource) of the second set of resources based on a beam prediction procedure associated with the resource.
[0112] The UE 115-b may communicate in accordance with the DL-TCI state. For example, the UE 115-b may receive a DL message including at least one of an SRS, a PDCCH, or a PDSCH 230 in accordance with the DL-TCI state. In some examples, one or more Rx spatial filters for the SRS, PDCCH, or PDSCH 230 may be based on virtual UL beams (e.g., beam 210) or virtual DL beams (e.g., beam 205) . The UE 115-b may communicate using a spatial filter, and the spatial filter may be based on the DL-TCI state, a resource (e.g., virtual resource) , or both. In an example, the UE 115-a may identify one or more Tx spatial filters for virtually transmitting a virtual UL resource (e.g., using the beam 210) . If the reference source associated with the DL-TCI state is based on virtual UL resources, the UE 115-a may apply one or more Rx spatial filters that are the same as, or similar to, the identified one or more Tx spatial filters. For example, the UE 115-a may receive an applicable SRS, PDCCH, or PDSCH 230 configured for, activated with, or switched to the virtual DL-TCI state using the Rx spatial filters. Accordingly, a DL-Rx beam 225 for the PDSCH 230 may share the same spatial filter as the beam 210 (e.g., a predicted Tx beam) .
[0113] When used for receiving the PDSCH 230, the network entity 105-a may indicate the spatial filter (e.g., Rx spatial filter) to the UE 115-a based on the virtual DL-TCI state (e.g., DL-TCI state based on virtual DL / UL beams predicted by the UE 115-a) . In another example, the UE 115-a may identify one or more Rx spatial filters for virtually receiving a virtual DL resource (e.g., using the beam 205) . If the reference source associated with the DL-TCI state is based on virtual DL resources, the UE 115-a may apply one or more Rx spatial filters the same as, or similar to, the Rx spatial filters the UE 115-a used for virtually receiving the virtual DL resources. For example, the network entity 105-a may receive the applicable SRS, PDCCH, or PDSCH 230 switched to the virtual DL-TCI state using the applied Rx spatial filters.
[0114] The network entity 105-a may configure (e.g., RRC configure) virtual DL or virtual UL beams for DL-TCI states (e.g., as a source reference signal for the DL-TCI state) . In some cases, the network entity 105-a may reuse an RRC configuration for DL--TCI states (e.g., TCI-State) by supplying additional sub-information elements (IEs) in the RRC configuration. For example, the network entity 105-a may include sub-IEs (e.g., a sub-IE virtualSourceResource-r19) under the RRC configuration (e.g., directly under TCI-State) , which may include or indicate the DL virtual resources or UL virtual resources associated with the DL-TCI state. That is, the UE 115-a may receive a control message (e.g., RRC message) including a first parameter (e.g., virtualSourceResource-r19) indicating a resource (e.g., virtual resource) and a second parameter (e.g., referenceSignal-r17) indicating a resource of a first set of resources. The network entity 105-a may not configure an actual resource for the DL-TCI state and a virtual resource for the DL-TCI state at the same time (e.g., referenceSignal-r17 and virtualSourceResource-r19 may not be expected to be configured simultaneously) . In some cases, additional sub-IEs under the sub-IE of a reference signal for the DL-TCI state (e.g., referenceSignal-r17 under TCI-State) may respectively include the DL virtual resources or UL virtual resources for the DL-TCI state.
[0115] In some examples, the network entity 105-a may introduce a dedicated (e.g., new) virtual DL-TCI state differentiated from a conventional DL-TCI state. For example, the dedicated DL-TCI state whose reference source (e.g., source resource, reference signal) is based on one or more DL virtual resources or one or more UL virtual resources may be indicated or configured in a newly introduced dedicated IE (e.g., Virtual-TCI-State-r19) that is differentiated from the IE conventionally used for configuring UL TCI states (e.g., TCI-State) . That is, a control message (e.g., RRC message) may indicate that the DL-TCI state is associated with a first TCI state type (e.g., virtual DL-TCI state) , where a reference resource for the DL-TCI state is based on the DL virtual resource or UL virtual resource.
[0116] FIG. 3 shows an example of a TCI state configuration diagram 300 that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The TCI state configuration diagram 300 may implement aspects of or may be implemented by aspects of the wireless communications systems 100 and 200. For example, the TCI state configuration diagram 300 may illustrate a MAC-CE 315-a, a MAC-CE 315-b, and a DCI 320, which may be examples of signals communicated between a UE 115 and a network entity 105 to indicate TCI states as described with reference to FIGs. 1 and 2.
[0117] The network entity 105 may transmit a MAC-CE 315 to the UE 115 indicating a joint, DL, or UL TCI state to activate at the UE 115. In some examples, the network entity 105 may enhance the MAC-CE 315 to identify virtual joint, DL, or UL TCI states in addition to conventional joint, DL, or UL TCI states. The network entity 105 may configure (e.g., via an RRC configuration) types of TCI states associated with reference source resources that are DL or UL virtual resources and types of TCI states associated with source resources that are actual DL or UL reference signals. That is, the network entity 105 may use an RRC configuration to configure both virtual and conventional TCI states at the UE. The network entity 105 may transmit a MAC-CE 315 activating a subset of such RRC configured types of TCI states, where the activating MAC-CE 315 identifies the type and the ID of each of the respective TCI states activated by the MAC-CE 315. For example, the UE 115 may receive a MAC message indicating a TCI state ID and one or more bits (e.g., a flag 310) indicating a first TCI state type (e.g., virtual TCI state type) .
[0118] The network entity 105 may configure (e.g., via RRC signaling) various types of TCI states at the UE 115. In some examples, the network entity 105 may configure the UE 115 with four types of TCI states: conventional joint or DL TCI states (e.g., TCI-State) , virtual joint or DL TCI states based on virtual DL resources (e.g., Virtual-TCI-State-r19) , conventional UL TCI states (e.g., TCI-UL-state-r17) , and virtual UL TCI states based on virtual DL or UL resources (e.g., Virtual-TCI-UL-State-r19) . In other examples, the network entity 105 may RRC configure the UE 115 with three types of TCI states: joint or DL TCI states (e.g., TCI-State) including both conventional joint or DL TCI states and virtual joint or DL TCI states, conventional UL TCI states (e.g., TCI-UL-State-r17) , and virtual UL TCI states based on virtual DL or UL resources (e.g., Virtual-TCI-UL-State-r19) .
[0119] In some cases, the network entity 105 may use a single MAC-CE 315 for activating all types of TCI states (e.g., both conventional and virtual) . For example, a single unified TCI state activation MAC-CE may include one or more TCI state IDs 305 of TCI states to activate at the UE 115, and each TCI state ID may be accompanied with a flag 310 (e.g., a field) identifying one of the types of TCI states described herein (e.g., TCI-State, Virtual-TCI-State-r19, TCI-UL-state-r17, Virtual-TCI-UL-State-r19) . In some examples, a MAC-CE 315-a may include 8 bits per activated TCI state. The MAC-CE 315-a may include a 6-bit TCI state ID and a flag 310 (e.g., a 2-bit flag) corresponding to the TCI state ID. A TCI state ID 305-a may correspond to a flag 310-a, a TCI state ID 305-b may correspond to a flag 310-b, a TCI state ID 305-c may correspond to a flag 310-c, and a TCI state ID 305-d may correspond to a flag 310-d. In other examples, a MAC-CE 315-b may include 16 bits per activated TCI state. For example, the MAC-CE 315-b may include a TCI state ID 305-e, a TCI state ID 305-f, a TCI state ID 305-g, and a TCI state ID 305-h, which may each be 14 bits, and a flag 310-e, a flag 310-f, a flag 310-g, and a flag 310-h, which may each be 2 bits.
[0120] In cases where the network entity 105 may configure (e.g., RRC configure) four types of TCI states, each TCI state ID 305 may be accompanied with 2 bits to identify the type of TCI state being activated. In an example, if the flag 310-a includes the bits 00, the TCI state ID 305-a may correspond to a conventional UL TCI state (e.g., TCI-UL-state-r17) , if the flag 310-a includes the bits 01, the TCI state ID 305-a may correspond to a conventional joint or DL TCI state (e.g., TCI-State) , if the flag 310-a includes the bits 10, the TCI state ID 305-a may correspond to a virtual UL TCI state (e.g., Virtual-TCI-UL-State-r19) , and if the flag 310-a includes the bits 11, the TCI state ID 305-a may correspond to a virtual joint or DL TCI state (e.g., Virtual-TCI-State-r19) .
[0121] In some examples, the network entity 105 may transmit DCI 320 to indicate a TCI state switch for the UE 115. For example, the DCI 320 may include a DL grant for switching unified or UL TCI states. The DCI 320 may be reused (e.g., may be unchanged, may have a same format as other switching DCIs or DL grants) . In some examples, the DCI 320 may indicate a TCI state ID of the MAC-CE 315-a or the MAC-CE 315-b. The UE 115 may switch to the TCI state indicated by the DCI 320 and may communicate in accordance with the new TCI state.
[0122] FIG. 4 shows an example of a TCI state configuration diagram 400 that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The TCI state configuration diagram 400 may implement aspects of or may be implemented by aspects of the wireless communications systems 100 and 200. For example, the TCI state configuration diagram 400 may illustrate a MAC-CE 415-a, a MAC-CE 415-b, a MAC-CE 415-c, a MAC-CE 415-d, and a DCI 420, which may be examples of signals communicated between a UE 115 and a network entity 105 to indicate TCI states as described with reference to FIGs. 1 and 2.
[0123] In some examples, the network entity 105 may use multiple MAC-CEs 415 to activate respective types of TCI states. For example, the network entity 105 may use an additional unified TCI state activation MAC-CE 415-b apart from a conventional unified TCI state activation MAC-CE 415-a to activate joint, DL, or UL TCI states whose reference sources are based on virtual resources. That is, the network entity 105 may transmit a MAC-CE 415-a (e.g., a first MAC-CE) for activating a conventional TCI state associated with a reference source that is based on actual resources, and may transmit a MAC-CE 415-b (e.g., a second MAC-CE) for activating a virtual TCI state associated with a reference source that is based on virtual resources. The MAC-CE 415-b may correspond to either of the MAC-CE 415-c or the MAC-CE 415-d.
[0124] The MAC-CE 415-a may indicate TCI state IDs of conventional (e.g., non-virtual) TCI states, which may include a TCI state ID 405-a corresponding to a flag 410-a (e.g., a field) , a TCI state 405-b corresponding to a flag 410-b, a TCI state 405-c corresponding to a flag 410-c, and a TCI state 405-d corresponding to a flag 410-d. In some examples, an UL TCI state (e.g., TCI-UL-State-r17) may be MAC-CE activated and switched by a DL grant DCI. The DL grant DCI may be further used for determining TCI states of SRS, PUCCH, or PUSCH transmissions. The QCL source reference signals applicable for an UL TCI state may include SSB, CSI-RS, and SRS, but may exclude virtual resources. For joint (e.g., unified) or DL TCI states, the applicable QCL source reference signals may include SSB and CSI-RS, but may exclude virtual resources. For a MAC-CE 415-a activating joint / DL or UL TCI states, each TCI state ID 405 in the MAC-CE is associated with a single-bit flag identifying whether the TCI state ID 405 is referring to a joint / DL TCI state or an UL TCI state. For example, the flags 410-a, 410-b, 410-c, and 410-d may each be one bit and may indicate a conventional UL TCI state (e.g., TCI-UL-State-r17) if the bit has a value of 0 and may indicate a conventional DL TCI state (e.g., TCI-State) if the bit has a value of 1.
[0125] The format of the additional MAC-CE 415-b may reuse the format of a conventional unified TCI state activation MAC-CE 415-a. For example, the MAC-CE 415-b may be MAC-CE 415-c and may include TCI state IDs for activated TCI states, and a 1-bit flag accompanying each activated TCI state ID to identify whether the activated TCI state is associated with a Virtual-TCI-State-r19 (e.g., virtual joint or DL TCI state) or a Virtual-TCI-UL-State-r19 (e.g., virtual UL TCI state) . The MAC-CE 415-c may include a flag 410-e, which may correspond to a TCI state ID 405-e, a flag 410-f, which may correspond to a TCI state ID 405-f, a flag 410-g, which may correspond to a TCI state ID 405-g, and a flag 410-h, which may correspond to a TCI state ID 405-h.
[0126] In some examples, the network entity may configure (e.g., RRC configure) the UE 115 with virtual UL TCI states (e.g., Virtual-TCI-UL-State-r19) , but virtual joint or DL TCI states may lack a separate (e.g., new) TCI state type. For example, the joint or DL TCI state type may be enhanced to include virtual joint / DL TCI states without introducing new TCI state types. In this case, the network entity 105 may RRC configure the UE with three TCI state types (e.g., TCI-UL-State-r17, TCI-State, Virtual- TCI-UL-State-r19) as described herein with greater detail with reference to FIG. 3. In such cases, the additional MAC-CE 415-b may be the MAC-CE 415-d and may directly indicate the TCI state IDs without the 1-bit flag ID. For example, the MAC-CE 415-d may include the TCI state ID 405-e, the TCI state ID 405-f, the TCI state ID 405-g, and the TCI state ID 405-h. The MAC-CE 415-d may implicitly indicate (e.g., without the use of a flag 410) that the TCI state IDs included in the MAC-CE 415-d correspond to TCI states of the virtual UL TCI state type (e.g., Virtual-TCI-UL-State-r19) . The bits that may be dedicated to the flag 410 in the conventional activation MAC-CE (e.g., the MAC-CE 415-a) or in the MAC-CE 415-c may be reserved in the MAC-CE 415-d.
[0127] In some examples, the network entity 105 may use DCI 420 for switching the TCI state at the UE 115, where the DCI 420 may be enhanced to additionally indicate which of the MAC-CEs 415 (e.g., MAC-CE 415-a, MAC-CE 415-b, MAC-CE 415-c, MAC-CE 415-d, conventional MAC-CE, new or additional MAC-CE) was referred to regarding the TCI state being switched to. For example, the DCI 420 may include a MAC-CE selector, a TCI codepoint in the associated MAC-CE, or both. In some cases, the UE 115 may expect such an enhanced DCI 420 based on separately RRC-configured parameters. The UE 115 may determine the MAC-CE based on an RRC-configured table (e.g., a look-up table) , a MAC-CE index (e.g., one or more bits) , or both. The enhanced DCI 420 may be based on an alternative DCI format, an alternative radio network temporary ID (RNTI) , or both.
[0128] FIG. 5 shows an example of a TCI state configuration diagram 500 that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The TCI state configuration diagram 500 may implement aspects of or may be implemented by aspects of the wireless communications systems 100 and 200. For example, the TCI state configuration diagram 500 may illustrate a MAC-CE 515, which may be an example of a signal communicated between a UE 115 and a network entity 105 to indicate TCI states as described with reference to FIGs. 1 and 2.
[0129] In some examples, the network entity 105-a may activate DL-TCI states at the UE 115 for communicating via a PDSCH. The network entity 105 or the UE 115 may use the activated DL-TCI states for communicating messages in mTRP deployments. For example, the network entity 105 may utilize an enhanced MAC-CE 515 for activating TCI states for PDSCH communications, mTRP communications, or both. The network entity 105 may use RRC signaling to configure the UE 115 with multiple types of TCI states. For example, the network entity 105 may configure the UE 115 with joint or DL TCI states (e.g., conventional joint or DL TCI states) and virtual joint or DL TCI states based on virtual DL resources or virtual UL resources, as described herein with reference to FIG. 2.
[0130] The enhanced MAC-CE 515 may include TCI state IDs 505 which may identify TCI states to be activated at the UE 115. Each TCI state ID 505 activated in the enhanced MAC-CE 515 may be accompanied with a 1-bit field identifying whether the activated TCI state is associated with a conventional TCI state (e.g., TCI-State) or a virtual TCI state (e.g., Virtual-TCI-State-r19) . For example, a flag 510-a may correspond to a TCI state ID 505-a, a flag 510-b may correspond to a TCI state ID 505-b, a flag 510-c may correspond to a TCI state ID 505-c, a flag 510-d may correspond to a TCI state ID 505-d, a flag 510-e may correspond to a TCI state ID 505-e, a flag 510-f may correspond to a TCI state ID 505-f, and a flag 510-g may correspond to a TCI state ID 505-g.
[0131] A flag 510 may be a 1-bit field. If the flag 510 has a value of 0, the corresponding TCI state ID 505 may correspond to a conventional TCI state (e.g., joint or DL TCI state) , and if the flag 510 has a value of 1, the corresponding TCI state ID 505 may correspond to a virtual TCI state (e.g., virtual joint or virtual DL TCI state) . For example, the flag 510-a may have a value of 0, which may indicate that the TCI state ID 505-a identifies a TCI state of a joint or DL TCI state type. The flag 510-b may have a value of 1, which may indicate that the TCI state ID 505-b identifies a TCI state of a virtual joint or DL TCI state type.
[0132] A field Ci may indicate whether the octet containing TCI state IDi, 2 is present. If Ci is set to (e.g., has a value of) 1, the octet containing TCI state IDi, 2 may be present. If Ci is set to (e.g., has a value of) 0, the octet containing TCI state IDi, 2 may not be present. The field TCI state IDi, j may indicate the TCI state identified by a parameter (e.g., an RRC-configured parameter) TCI-StateId, where i may be the index of the codepoint of the DCI Transmission configuration indication field and TCI state IDi, j may denote the jth TCI state indicated for the ith codepoint in the DCI Transmission Configuration Indication field. The TCI codepoint to which the TCI States are mapped may be determined by its ordinal position among all the TCI codepoints with sets of TCI state IDi, j fields, (e.g., the first TCI codepoint with TCI state ID0, 1 and TCI state ID0, 2 may be mapped to the codepoint value 0, the second TCI codepoint with TCI state ID1, 1 and TCI state ID1, 2 may be mapped to the codepoint value 1, etc. ) . The TCI state IDi, 2 may be optional based on the indication of the Ci field. The maximum quantity of activated TCI codepoints may be 8 and the maximum quantity of TCI states mapped to a TCI codepoint may be 2.
[0133] FIG. 6 shows an example of a process flow 600 that supports TCI state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The process flow 600 may implement or may be implemented by aspects of the wireless communications systems 100 and 200. For example, the process flow 600 may include a UE 115-b and a network entity 105-b which may be examples of corresponding devices and entities as described with reference to FIGs. 1 and 2. In the following description of the process flow 600, the operations between the UE 115-b and the network entity 105-b may be transmitted in a different order than the example order shown, or the operations performed by the UE 115-b and the network entity 105-b may be performed in different orders or at different times. Some operations may also be omitted from the process flow 600, and other operations may be added to the process flow 600.
[0134] At 605, the UE 115-b may receive an indication of a first set of resources (e.g., actual resources, non-virtual resources) configured for reference signal communications between the UE 115-b and the network entity 105-b and of a second set of resources (e.g., virtual resources) different from and non-overlapping with the first set of resources. The first set of resources may be associated with a first set of TCI states (e.g., conventional TCI states, UL-TCI states, DL-TCI states) activated for the UE 115-b and the second set of resources may be associated with a second set of TCI states (e.g., virtual TCI states, virtual UL-TCI states, virtual DL-TCI states) different from the first set of TCI states.
[0135] At 610, the UE 115-b may receive one or more reference signals via the first set of resources for measurement at the UE 115-b. The first set of resources may include one or more DL resources. In other examples, the first set of resources may include one or more UL resources, and the UE 115-b may transmit the one or more reference signals via the first set of resources.
[0136] At 615, the UE 115-b may perform one or more channel measurements for the first set of resources. For example, the UE 115-b may perform L1-RSRP measurements, L1-SINR measurements, or other channel measurements.
[0137] At 620, the UE 115-b may predict, via a beam prediction procedure, measurements of one or more reference signals for the second set of resources based on communicating the one or more reference signals via the first set of resources. The predicted measurements of the one or more reference signals may be based on the one or more channel measurements. At 625, the UE 115-b may transmit, to the network entity 105-b, a report indicating the predicted measurements.
[0138] At 630, the UE 115-b may receive a control message indicating a TCI state associated with a resource of the second set of resources based on the beam prediction procedure associated with the resource. In some examples, the control message may include a first parameter indicating the resource and a second parameter indicating a resource of the first set of resources. The control message may indicate that the TCI state is associated with a first TCI state type (e.g., virtual TCI state type) , where a reference resource (e.g., source resource) for the TCI state is based on the resource. In some cases, the control message may be an RRC message that configures the UE 115-b. In such cases, the first parameter may be a sub-IE in the RRC configuration (e.g., virtualSourceResource-r19) and the second parameter may also be a sub-IE in the RRC configuration (e.g., referenceSignal-r17) . The first parameter and the second parameter may not be configured simultaneously. In some cases, the network entity 105-b may indicate the first parameter or the second parameter as the reference resource for the TCI state, or the reference resource for the TCI state may be based on the first parameter or the second parameter.
[0139] In some examples, the control message may be a MAC message (e.g., additional MAC-CE, new MAC-CE) indicating a TCI state ID and one or more bits (e.g., a flag) indicating the first TCI state type (e.g., virtual TCI state type, Virtual-TCI-UL-State-r19, Virtual-TCI-State-r19) . In some cases, the UE 115-b may receive a second MAC message (e.g., conventional MAC-CE) indicating a second TCI state (e.g., conventional TCI state type, TCI-UL-State-r17, TCI-State) associated with a resource of the first set of resources (e.g., actual resources, non-virtual resources) . In such cases, receiving the MAC message may be based on the MAC message indicating the TCI state associated with the resource. In some examples, the control message may include one or more bits indicating a transmission direction (e.g., DL, UL) associated with the TCI state. For example, the control message may be a conventional MAC-CE, and the one or more bits may indicate whether the TCI state is an UL TCI state (e.g., TCI-UL-State-r17) or a joint or DL TCI state (e.g., TCI-State) .
[0140] In some cases, the control message may be a DCI indicating that the UE 115-b is to switch the TCI state. The DCI may include a TCI switching field (e.g., MAC-CE selector) indicating a MAC message for activating the TCI state. The DCI may indicate to the UE 115-b to switch from a conventional TCI state based on an actual resource to a virtual TCI state based on a virtual resource. In some examples, the virtual TCI state may be indicated in a separate MAC-CE than the MAC-CE indicating a conventional TCI state, and the DCI may indicate which MAC-CE includes the TCI state to activate or switch to at the UE 115-b.
[0141] At 635, the UE 115-b may communicate in accordance with the TCI state. For example, the UE 115-b may transmit an UL message including at least one of an SRS, a PUCCH, or a PUSCH in accordance with the TCI state. In some examples, the UE 115-b may communicate using a spatial filter. The spatial filter may be based on the TCI state and the resource (e.g., virtual resource) . For example, the UE 115-b may identify an Rx spatial filter for virtually receiving the resource, without actually receiving the resource from the network entity 105-b, or may identify a Tx spatial filter for virtually transmitting the resource, without actually transmitting the resource to the network entity 105-b. The UE 115-b may apply Tx spatial filters the same as, or similar to, the identified Rx or Tx spatial filters for transmitting the UL message.
[0142] FIG. 7 shows a block diagram 700 of a device 705 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The device 705 may be an example of aspects of a UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. The device 705 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0143] The receiver 710 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to transmission configuration indicator state activation based on DL beam prediction) . Information may be passed on to other components of the device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.
[0144] The transmitter 715 may provide a means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to transmission configuration indicator state activation based on DL beam prediction) . In some examples, the transmitter 715 may be co-located with a receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.
[0145] The communications manager 720, the receiver 710, the transmitter 715, or various combinations thereof or various components thereof may be examples of means for performing various aspects of transmission configuration indicator state activation based on DL beam prediction as described herein. For example, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may support a method for performing one or more of the functions described herein.
[0146] In some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some examples, a processor and memory coupled with the processor may be configured to perform one or more of the functions described herein (e.g., by executing, by the processor, instructions stored in the memory) .
[0147] Additionally, or alternatively, in some examples, the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by a processor. If implemented in code executed by a processor, the functions of the communications manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in the present disclosure) .
[0148] In some examples, the communications manager 720 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 710, the transmitter 715, or both. For example, the communications manager 720 may receive information from the receiver 710, send information to the transmitter 715, or be integrated in combination with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.
[0149] The communications manager 720 may support wireless communication at a UE in accordance with examples as disclosed herein. For example, the communications manager 720 is capable of, configured to, or operable to support a means for receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states. The communications manager 720 is capable of, configured to, or operable to support a means for receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The communications manager 720 is capable of, configured to, or operable to support a means for communicating in accordance with the TCI state.
[0150] By including or configuring the communications manager 720 in accordance with examples as described herein, the device 705 (e.g., a processor controlling or otherwise coupled with the receiver 710, the transmitter 715, the communications manager 720, or a combination thereof) may support techniques for reduced processing at the UE 115 by performing fewer channel measurements or reusing predicted measurements for TCI state activation without performing new measurements. The device 705 may support more efficient utilization of communication resources because the UE 115 may refrain from transmitting or receiving additional reference signals to DCI switch or activate a TCI state for communications, where predicted measurements may already be available to use.
[0151] FIG. 8 shows a block diagram 800 of a device 805 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The device 805 may be an example of aspects of a device 705 or a UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communications manager 820. The device 805 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0152] The receiver 810 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to transmission configuration indicator state activation based on DL beam prediction) . Information may be passed on to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.
[0153] The transmitter 815 may provide a means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to transmission configuration indicator state activation based on DL beam prediction) . In some examples, the transmitter 815 may be co- located with a receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.
[0154] The device 805, or various components thereof, may be an example of means for performing various aspects of transmission configuration indicator state activation based on DL beam prediction as described herein. For example, the communications manager 820 may include a reference signal component 825, a TCI state component 830, a communication component 835, or any combination thereof. The communications manager 820 may be an example of aspects of a communications manager 720 as described herein. In some examples, the communications manager 820, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 810, the transmitter 815, or both. For example, the communications manager 820 may receive information from the receiver 810, send information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.
[0155] The communications manager 820 may support wireless communication at a UE in accordance with examples as disclosed herein. The reference signal component 825 is capable of, configured to, or operable to support a means for receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states. The TCI state component 830 is capable of, configured to, or operable to support a means for receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The communication component 835 is capable of, configured to, or operable to support a means for communicating in accordance with the TCI state.
[0156] FIG. 9 shows a block diagram 900 of a communications manager 920 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The communications manager 920 may be an example of aspects of a communications manager 720, a communications manager 820, or both, as described herein. The communications manager 920, or various components thereof, may be an example of means for performing various aspects of transmission configuration indicator state activation based on DL beam prediction as described herein. For example, the communications manager 920 may include a reference signal component 925, a TCI state component 930, a communication component 935, a measurement component 940, a prediction component 945, or any combination thereof. Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0157] The communications manager 920 may support wireless communication at a UE in accordance with examples as disclosed herein. The reference signal component 925 is capable of, configured to, or operable to support a means for receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states. The TCI state component 930 is capable of, configured to, or operable to support a means for receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The communication component 935 is capable of, configured to, or operable to support a means for communicating in accordance with the TCI state.
[0158] In some examples, the first set of resources includes one or more DL resources, and the reference signal component 925 is capable of, configured to, or operable to support a means for receiving one or more reference signals via the first set of resources for measurement at the UE. In some examples, the first set of resources includes one or more DL resources, and the measurement component 940 is capable of, configured to, or operable to support a means for performing one or more channel measurements for the first set of resources, where the beam prediction procedure is based on measurements of the one or more reference signals, the measurements of the one or more reference signals based on the one or more channel measurements.
[0159] In some examples, the first set of resources includes one or more UL resources, and the reference signal component 925 is capable of, configured to, or operable to support a means for transmitting one or more reference signals via the first set of resources.
[0160] In some examples, the second set of resources includes one or more DL resources, and the prediction component 945 is capable of, configured to, or operable to support a means for predicting measurements of one or more reference signals for the second set of resources based on communicating the one or more reference signals via the first set of resources. In some examples, the second set of resources includes one or more DL resources, and the prediction component 945 is capable of, configured to, or operable to support a means for transmitting a report indicating the predicted measurements, where the TCI state is based on the report.
[0161] In some examples, the second set of resources includes one or more UL resources, and the prediction component 945 is capable of, configured to, or operable to support a means for predicting measurements of one or more reference signals for the second set of resources based on communicating the one or more reference signals via the first set of resources.
[0162] In some examples, to support communicating in accordance with the TCI state, the communication component 935 is capable of, configured to, or operable to support a means for communicating using a spatial filter, the spatial filter based on the TCI state and the resource.
[0163] In some examples, the control message includes a first parameter indicating the resource and a second parameter indicating a resource of the first set of resources. In some examples, the control message indicates that the TCI state is associated with a first TCI state type. In some examples, a reference resource for the TCI state is based on the resource.
[0164] In some examples, to support receiving the control message, the TCI state component 930 is capable of, configured to, or operable to support a means for receiving a MAC message indicating a TCI state ID and one or more bits indicating the first TCI state type.
[0165] In some examples, the control message is a MAC message, and the TCI state component 930 is capable of, configured to, or operable to support a means for receiving a second MAC message indicating a second TCI state associated with a resource of the first set of resources.
[0166] In some examples, receiving the MAC message is based on the MAC message indicating the TCI state associated with the resource.
[0167] In some examples, the control message indicates a TCI state ID and one or more bits indicating a transmission direction associated with the TCI state.
[0168] In some examples, to support receiving the control message, the TCI state component 930 is capable of, configured to, or operable to support a means for receiving DL control information indicating that the UE is to switch the TCI state. In some examples, the DL control information includes a TCI switching field indicating a MAC message for activating the TCI state.
[0169] In some examples, to support communicating in accordance with the TCI state, the communication component 935 is capable of, configured to, or operable to support a means for receiving a DL message via one or more transmission and reception points in accordance with the TCI state.
[0170] In some examples, to support communicating in accordance with the TCI state, the communication component 935 is capable of, configured to, or operable to support a means for transmitting an UL message including at least one of a SRS, a PUCCH, or a PUSCH in accordance with the TCI state.
[0171] FIG. 10 shows a diagram of a system 1000 including a device 1005 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The device 1005 may be an example of or include the components of a device 705, a device 805, or a UE 115 as described herein. The device 1005 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 1005 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1020, an input / output (I / O) controller 1010, a transceiver 1015, an antenna 1025, a memory 1030, code 1035, and a processor 1040. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1045) .
[0172] The I / O controller 1010 may manage input and output signals for the device 1005. The I / O controller 1010 may also manage peripherals not integrated into the device 1005. In some cases, the I / O controller 1010 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 1010 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 1010 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 1010 may be implemented as part of a processor, such as the processor 1040. In some cases, a user may interact with the device 1005 via the I / O controller 1010 or via hardware components controlled by the I / O controller 1010.
[0173] In some cases, the device 1005 may include a single antenna 1025. However, in some other cases, the device 1005 may have more than one antenna 1025, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1015 may communicate bi-directionally, via the one or more antennas 1025, wired, or wireless links as described herein. For example, the transceiver 1015 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1015 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 1025 for transmission, and to demodulate packets received from the one or more antennas 1025. The transceiver 1015, or the transceiver 1015 and one or more antennas 1025, may be an example of a transmitter 715, a transmitter 815, a receiver 710, a receiver 810, or any combination thereof or component thereof, as described herein.
[0174] The memory 1030 may include random access memory (RAM) and read-only memory (ROM) . The memory 1030 may store computer-readable, computer-executable code 1035 including instructions that, when executed by the processor 1040, cause the device 1005 to perform various functions described herein. The code 1035 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1035 may not be directly executable by the processor 1040 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the memory 1030 may contain, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0175] The processor 1040 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) . In some cases, the processor 1040 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the processor 1040. The processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1030) to cause the device 1005 to perform various functions (e.g., functions or tasks supporting transmission configuration indicator state activation based on DL beam prediction) . For example, the device 1005 or a component of the device 1005 may include a processor 1040 and memory 1030 coupled with or to the processor 1040, the processor 1040 and memory 1030 configured to perform various functions described herein.
[0176] The communications manager 1020 may support wireless communication at a UE in accordance with examples as disclosed herein. For example, the communications manager 1020 is capable of, configured to, or operable to support a means for receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states. The communications manager 1020 is capable of, configured to, or operable to support a means for receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The communications manager 1020 is capable of, configured to, or operable to support a means for communicating in accordance with the TCI state.
[0177] By including or configuring the communications manager 1020 in accordance with examples as described herein, the device 1005 may support techniques for reduced latency by reducing the amount of time taken to activate or DCI switch a TCI state. For example, the device 1005 may support TCI states based on virtual resources, which may reduce the amount of time taken to receive and measure reference signals, since the UE 115 or the network entity 105 may base the TCI state on virtual resources, where predicted measurements of the virtual resource may already be known. Thus, the UE 115 may refrain from remeasuring reference signals or measuring new reference signals, which may reduce latency of communications where the communications are based on TCI state activation at the UE 115.
[0178] In some examples, the communications manager 1020 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1015, the one or more antennas 1025, or any combination thereof. Although the communications manager 1020 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1020 may be supported by or performed by the processor 1040, the memory 1030, the code 1035, or any combination thereof. For example, the code 1035 may include instructions executable by the processor 1040 to cause the device 1005 to perform various aspects of transmission configuration indicator state activation based on DL beam prediction as described herein, or the processor 1040 and the memory 1030 may be otherwise configured to perform or support such operations.
[0179] FIG. 11 shows a block diagram 1100 of a device 1105 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The device 1105 may be an example of aspects of a network entity 105 as described herein. The device 1105 may include a receiver 1110, a transmitter 1115, and a communications manager 1120. The device 1105 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0180] The receiver 1110 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 1105. In some examples, the receiver 1110 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1110 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0181] The transmitter 1115 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1105. For example, the transmitter 1115 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . In some examples, the transmitter 1115 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1115 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1115 and the receiver 1110 may be co-located in a transceiver, which may include or be coupled with a modem.
[0182] The communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations thereof or various components thereof may be examples of means for performing various aspects of transmission configuration indicator state activation based on DL beam prediction as described herein. For example, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may support a method for performing one or more of the functions described herein.
[0183] In some examples, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include a processor, a DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure. In some examples, a processor and memory coupled with the processor may be configured to perform one or more of the functions described herein (e.g., by executing, by the processor, instructions stored in the memory) .
[0184] Additionally, or alternatively, in some examples, the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by a processor. If implemented in code executed by a processor, the functions of the communications manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting a means for performing the functions described in the present disclosure) .
[0185] In some examples, the communications manager 1120 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1110, the transmitter 1115, or both. For example, the communications manager 1120 may receive information from the receiver 1110, send information to the transmitter 1115, or be integrated in combination with the receiver 1110, the transmitter 1115, or both to obtain information, output information, or perform various other operations as described herein.
[0186] The communications manager 1120 may support wireless communication at a network entity in accordance with examples as disclosed herein. For example, the communications manager 1120 is capable of, configured to, or operable to support a means for transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states. The communications manager 1120 is capable of, configured to, or operable to support a means for transmitting a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The communications manager 1120 is capable of, configured to, or operable to support a means for communicating in accordance with the TCI state.
[0187] By including or configuring the communications manager 1120 in accordance with examples as described herein, the device 1105 (e.g., a processor controlling or otherwise coupled with the receiver 1110, the transmitter 1115, the communications manager 1120, or a combination thereof) may support techniques for reduced processing at the UE 115 by performing fewer channel measurements or reusing predicted measurements for TCI state activation without performing new measurements. The device 1105 may support more efficient utilization of communication resources because the UE 115 may refrain from transmitting or receiving additional reference signals to DCI switch or activate a TCI state for communications, where predicted measurements may already be available to use.
[0188] FIG. 12 shows a block diagram 1200 of a device 1205 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The device 1205 may be an example of aspects of a device 1105 or a network entity 105 as described herein. The device 1205 may include a receiver 1210, a transmitter 1215, and a communications manager 1220. The device 1205 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0189] The receiver 1210 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 1205. In some examples, the receiver 1210 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1210 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0190] The transmitter 1215 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1205. For example, the transmitter 1215 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . In some examples, the transmitter 1215 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1215 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1215 and the receiver 1210 may be co-located in a transceiver, which may include or be coupled with a modem.
[0191] The device 1205, or various components thereof, may be an example of means for performing various aspects of transmission configuration indicator state activation based on DL beam prediction as described herein. For example, the communications manager 1220 may include a reference signal manager 1225, a TCI state manager 1230, a communication manager 1235, or any combination thereof. The communications manager 1220 may be an example of aspects of a communications manager 1120 as described herein. In some examples, the communications manager 1220, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1210, the transmitter 1215, or both. For example, the communications manager 1220 may receive information from the receiver 1210, send information to the transmitter 1215, or be integrated in combination with the receiver 1210, the transmitter 1215, or both to obtain information, output information, or perform various other operations as described herein.
[0192] The communications manager 1220 may support wireless communication at a network entity in accordance with examples as disclosed herein. The reference signal manager 1225 is capable of, configured to, or operable to support a means for transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states. The TCI state manager 1230 is capable of, configured to, or operable to support a means for transmitting a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The communication manager 1235 is capable of, configured to, or operable to support a means for communicating in accordance with the TCI state.
[0193] FIG. 13 shows a block diagram 1300 of a communications manager 1320 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The communications manager 1320 may be an example of aspects of a communications manager 1120, a communications manager 1220, or both, as described herein. The communications manager 1320, or various components thereof, may be an example of means for performing various aspects of transmission configuration indicator state activation based on DL beam prediction as described herein. For example, the communications manager 1320 may include a reference signal manager 1325, a TCI state manager 1330, a communication manager 1335, or any combination thereof. Each of these components may communicate, directly or indirectly, with one another (e.g., via one or more buses) which may include communications within a protocol layer of a protocol stack, communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualized component associated with a network entity 105, between devices, components, or virtualized components associated with a network entity 105) , or any combination thereof.
[0194] The communications manager 1320 may support wireless communication at a network entity in accordance with examples as disclosed herein. The reference signal manager 1325 is capable of, configured to, or operable to support a means for transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states. The TCI state manager 1330 is capable of, configured to, or operable to support a means for transmitting a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The communication manager 1335 is capable of, configured to, or operable to support a means for communicating in accordance with the TCI state.
[0195] In some examples, the first set of resources includes one or more DL resources, and the reference signal manager 1325 is capable of, configured to, or operable to support a means for transmitting one or more reference signals via the first set of resources for measurement at the UE.
[0196] In some examples, the first set of resources includes one or more UL resources, and the reference signal manager 1325 is capable of, configured to, or operable to support a means for receiving one or more reference signals via the first set of resources for measurement at the UE.
[0197] In some examples, to support communicating in accordance with the TCI state, the communication manager 1335 is capable of, configured to, or operable to support a means for communicating using a spatial filter, the spatial filter based on the TCI state and the resource.
[0198] In some examples, the control message includes a first parameter indicating the resource and a second parameter indicating a resource of the first set of resources.
[0199] In some examples, the control message indicates that the TCI state is associated with a first TCI state type. In some examples, a reference resource for the TCI state is based on the resource.
[0200] In some examples, to support transmitting the control message, the TCI state manager 1330 is capable of, configured to, or operable to support a means for transmitting a MAC message indicating a TCI state ID and one or more bits indicating the first TCI state type.
[0201] In some examples, the control message is a MAC message, and the TCI state manager 1330 is capable of, configured to, or operable to support a means for transmitting a second MAC message indicating a second TCI state associated with a resource of the first set of resources.
[0202] In some examples, transmitting the MAC message is based on the MAC message indicating the TCI state associated with the resource.
[0203] In some examples, the control message indicates a TCI state ID and one or more bits indicating a transmission direction associated with the TCI state.
[0204] In some examples, to support transmitting the control message, the TCI state manager 1330 is capable of, configured to, or operable to support a means for transmitting DL control information indicating that the UE is to switch the TCI state.
[0205] In some examples, the DL control information includes a TCI switching field indicating a MAC message for activating the TCI state.
[0206] In some examples, to support communicating in accordance with the TCI state, the communication manager 1335 is capable of, configured to, or operable to support a means for transmitting a DL message via one or more transmission and reception points in accordance with the TCI state.
[0207] In some examples, to support communicating in accordance with the TCI state, the communication manager 1335 is capable of, configured to, or operable to support a means for receiving an UL message including at least one of a SRS, a PUCCH, or a PUSCH in accordance with the TCI state.
[0208] FIG. 14 shows a diagram of a system 1400 including a device 1405 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with one or more aspects of the present disclosure. The device 1405 may be an example of or include the components of a device 1105, a device 1205, or a network entity 105 as described herein. The device 1405 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which may include communications over one or more wired interfaces, over one or more wireless interfaces, or any combination thereof. The device 1405 may include components that support outputting and obtaining communications, such as a communications manager 1420, a transceiver 1410, an antenna 1415, a memory 1425, code 1430, and a processor 1435. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1440) .
[0209] The transceiver 1410 may support bi-directional communications via wired links, wireless links, or both as described herein. In some examples, the transceiver 1410 may include a wired transceiver and may communicate bi-directionally with another wired transceiver. Additionally, or alternatively, in some examples, the transceiver 1410 may include a wireless transceiver and may communicate bi-directionally with another wireless transceiver. In some examples, the device 1405 may include one or more antennas 1415, which may be capable of transmitting or receiving wireless transmissions (e.g., concurrently) . The transceiver 1410 may also include a modem to modulate signals, to provide the modulated signals for transmission (e.g., by one or more antennas 1415, by a wired transmitter) , to receive modulated signals (e.g., from one or more antennas 1415, from a wired receiver) , and to demodulate signals. In some implementations, the transceiver 1410 may include one or more interfaces, such as one or more interfaces coupled with the one or more antennas 1415 that are configured to support various receiving or obtaining operations, or one or more interfaces coupled with the one or more antennas 1415 that are configured to support various transmitting or outputting operations, or a combination thereof. In some implementations, the transceiver 1410 may include or be configured for coupling with one or more processors or memory components that are operable to perform or support operations based on received or obtained information or signals, or to generate information or other signals for transmission or other outputting, or any combination thereof. In some implementations, the transceiver 1410, or the transceiver 1410 and the one or more antennas 1415, or the transceiver 1410 and the one or more antennas 1415 and one or more processors or memory components (for example, the processor 1435, or the memory 1425, or both) , may be included in a chip or chip assembly that is installed in the device 1405. In some examples, the transceiver may be operable to support communications via one or more communications links (e.g., a communication link 125, a backhaul communication link 120, a midhaul communication link 162, a fronthaul communication link 168) .
[0210] The memory 1425 may include RAM and ROM. The memory 1425 may store computer-readable, computer-executable code 1430 including instructions that, when executed by the processor 1435, cause the device 1405 to perform various functions described herein. The code 1430 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1430 may not be directly executable by the processor 1435 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the memory 1425 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0211] The processor 1435 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA, a microcontroller, a programmable logic device, discrete gate or transistor logic, a discrete hardware component, or any combination thereof) . In some cases, the processor 1435 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the processor 1435. The processor 1435 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1425) to cause the device 1405 to perform various functions (e.g., functions or tasks supporting transmission configuration indicator state activation based on DL beam prediction) . For example, the device 1405 or a component of the device 1405 may include a processor 1435 and memory 1425 coupled with the processor 1435, the processor 1435 and memory 1425 configured to perform various functions described herein. The processor 1435 may be an example of a cloud-computing platform (e.g., one or more physical nodes and supporting software such as operating systems, virtual machines, or container instances) that may host the functions (e.g., by executing code 1430) to perform the functions of the device 1405. The processor 1435 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1405 (such as within the memory 1425) . In some implementations, the processor 1435 may be a component of a processing system. A processing system may generally refer to a system or series of machines or components that receives inputs and processes the inputs to produce a set of outputs (which may be passed to other systems or components of, for example, the device 1405) . For example, a processing system of the device 1405 may refer to a system including the various other components or subcomponents of the device 1405, such as the processor 1435, or the transceiver 1410, or the communications manager 1420, or other components or combinations of components of the device 1405. The processing system of the device 1405 may interface with other components of the device 1405, and may process information received from other components (such as inputs or signals) or output information to other components. For example, a chip or modem of the device 1405 may include a processing system and one or more interfaces to output information, or to obtain information, or both. The one or more interfaces may be implemented as or otherwise include a first interface configured to output information and a second interface configured to obtain information, or a same interface configured to output information and to obtain information, among other implementations. In some implementations, the one or more interfaces may refer to an interface between the processing system of the chip or modem and a transmitter, such that the device 1405 may transmit information output from the chip or modem. Additionally, or alternatively, in some implementations, the one or more interfaces may refer to an interface between the processing system of the chip or modem and a receiver, such that the device 1405 may obtain information or signal inputs, and the information may be passed to the processing system. A person having ordinary skill in the art will readily recognize that a first interface also may obtain information or signal inputs, and a second interface also may output information or signal outputs.
[0212] In some examples, a bus 1440 may support communications of (e.g., within) a protocol layer of a protocol stack. In some examples, a bus 1440 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack) , which may include communications performed within a component of the device 1405, or between different components of the device 1405 that may be co-located or located in different locations (e.g., where the device 1405 may refer to a system in which one or more of the communications manager 1420, the transceiver 1410, the memory 1425, the code 1430, and the processor 1435 may be located in one of the different components or divided between different components) .
[0213] In some examples, the communications manager 1420 may manage aspects of communications with a core network 130 (e.g., via one or more wired or wireless backhaul links) . For example, the communications manager 1420 may manage the transfer of data communications for client devices, such as one or more UEs 115. In some examples, the communications manager 1420 may manage communications with other network entities 105, and may include a controller or scheduler for controlling communications with UEs 115 in cooperation with other network entities 105. In some examples, the communications manager 1420 may support an X2 interface within an LTE / LTE-A wireless communications network technology to provide communication between network entities 105.
[0214] The communications manager 1420 may support wireless communication at a network entity in accordance with examples as disclosed herein. For example, the communications manager 1420 is capable of, configured to, or operable to support a means for transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states. The communications manager 1420 is capable of, configured to, or operable to support a means for transmitting a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The communications manager 1420 is capable of, configured to, or operable to support a means for communicating in accordance with the TCI state.
[0215] By including or configuring the communications manager 1420 in accordance with examples as described herein, the device 1405 may support techniques for reduced latency by reducing the amount of time taken to activate or DCI switch a TCI state. For example, the device 1405 may support TCI states based on virtual resources, which may reduce the amount of time taken to receive and measure reference signals, since the UE 115 or the network entity 105 may base the TCI state on virtual resources, where predicted measurements of the virtual resource may already be known. Thus, the UE 115 may refrain from remeasuring reference signals or measuring new reference signals, which may reduce latency of communications where the communications are based on TCI state activation at the UE 115.
[0216] In some examples, the communications manager 1420 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the transceiver 1410, the one or more antennas 1415 (e.g., where applicable) , or any combination thereof. Although the communications manager 1420 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1420 may be supported by or performed by the transceiver 1410, the processor 1435, the memory 1425, the code 1430, or any combination thereof. For example, the code 1430 may include instructions executable by the processor 1435 to cause the device 1405 to perform various aspects of transmission configuration indicator state activation based on DL beam prediction as described herein, or the processor 1435 and the memory 1425 may be otherwise configured to perform or support such operations.
[0217] FIG. 15 shows a flowchart illustrating a method 1500 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with aspects of the present disclosure. The operations of the method 1500 may be implemented by a UE or its components as described herein. For example, the operations of the method 1500 may be performed by a UE 115 as described with reference to FIGs. 1 through 10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0218] At 1505, the method may include receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states. The operations of block 1505 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed by a reference signal component 925 as described with reference to FIG. 9.
[0219] At 1510, the method may include receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The operations of block 1510 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed by a TCI state component 930 as described with reference to FIG. 9.
[0220] At 1515, the method may include communicating in accordance with the TCI state. The operations of block 1515 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed by a communication component 935 as described with reference to FIG. 9.
[0221] FIG. 16 shows a flowchart illustrating a method 1600 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with aspects of the present disclosure. The operations of the method 1600 may be implemented by a UE or its components as described herein. For example, the operations of the method 1600 may be performed by a UE 115 as described with reference to FIGs. 1 through 10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0222] At 1605, the method may include receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, where the first set of resources includes one or more DL resources. The operations of block 1605 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed by a reference signal component 925 as described with reference to FIG. 9.
[0223] At 1610, the method may include receiving one or more reference signals via the first set of resources for measurement at the UE. The operations of block 1610 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed by a reference signal component 925 as described with reference to FIG. 9.
[0224] At 1615, the method may include performing one or more channel measurements for the first set of resources. The operations of block 1615 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed by a measurement component 940 as described with reference to FIG. 9.
[0225] At 1620, the method may include receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource, where the beam prediction procedure is based on measurements of the one or more reference signals, the measurements of the one or more reference signals based on the one or more channel measurements. The operations of block 1620 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1620 may be performed by a TCI state component 930 as described with reference to FIG. 9.
[0226] At 1625, the method may include communicating in accordance with the TCI state. The operations of block 1625 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1625 may be performed by a communication component 935 as described with reference to FIG. 9.
[0227] FIG. 17 shows a flowchart illustrating a method 1700 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with aspects of the present disclosure. The operations of the method 1700 may be implemented by a UE or its components as described herein. For example, the operations of the method 1700 may be performed by a UE 115 as described with reference to FIGs. 1 through 10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0228] At 1705, the method may include receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, where the first set of resources includes one or more UL resources. The operations of block 1705 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed by a reference signal component 925 as described with reference to FIG. 9.
[0229] At 1710, the method may include transmitting one or more reference signals via the first set of resources. The operations of block 1710 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1710 may be performed by a reference signal component 925 as described with reference to FIG. 9.
[0230] At 1715, the method may include receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The operations of block 1715 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1715 may be performed by a TCI state component 930 as described with reference to FIG. 9.
[0231] At 1720, the method may include communicating in accordance with the TCI state. The operations of block 1720 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1720 may be performed by a communication component 935 as described with reference to FIG. 9.
[0232] FIG. 18 shows a flowchart illustrating a method 1800 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with aspects of the present disclosure. The operations of the method 1800 may be implemented by a UE or its components as described herein. For example, the operations of the method 1800 may be performed by a UE 115 as described with reference to FIGs. 1 through 10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0233] At 1805, the method may include receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, where the second set of resources includes one or more DL resources. The operations of block 1805 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1805 may be performed by a reference signal component 925 as described with reference to FIG. 9.
[0234] At 1810, the method may include predicting measurements of one or more reference signals for the second set of resources based on communicating the one or more reference signals via the first set of resources. The operations of block 1810 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1810 may be performed by a prediction component 945 as described with reference to FIG. 9.
[0235] At 1815, the method may include transmitting a report indicating the predicted measurements. The operations of block 1815 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1815 may be performed by a prediction component 945 as described with reference to FIG. 9.
[0236] At 1820, the method may include receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource, where the TCI state is based on the report. The operations of block 1820 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1820 may be performed by a TCI state component 930 as described with reference to FIG. 9.
[0237] At 1825, the method may include communicating in accordance with the TCI state. The operations of block 1825 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1825 may be performed by a communication component 935 as described with reference to FIG. 9.
[0238] FIG. 19 shows a flowchart illustrating a method 1900 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with aspects of the present disclosure. The operations of the method 1900 may be implemented by a UE or its components as described herein. For example, the operations of the method 1900 may be performed by a UE 115 as described with reference to FIGs. 1 through 10. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0239] At 1905, the method may include receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, where the second set of resources includes one or more UL resources. The operations of block 1905 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1905 may be performed by a reference signal component 925 as described with reference to FIG. 9.
[0240] At 1910, the method may include predicting measurements of one or more reference signals for the second set of resources based on communicating the one or more reference signals via the first set of resources. The operations of block 1910 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1910 may be performed by a prediction component 945 as described with reference to FIG. 9.
[0241] At 1915, the method may include receiving a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The operations of block 1915 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1915 may be performed by a TCI state component 930 as described with reference to FIG. 9.
[0242] At 1920, the method may include communicating in accordance with the TCI state. The operations of block 1920 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1920 may be performed by a communication component 935 as described with reference to FIG. 9.
[0243] FIG. 20 shows a flowchart illustrating a method 2000 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with aspects of the present disclosure. The operations of the method 2000 may be implemented by a network entity or its components as described herein. For example, the operations of the method 2000 may be performed by a network entity as described with reference to FIGs. 1 through 6 and 11 through 14. In some examples, a network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally, or alternatively, the network entity may perform aspects of the described functions using special-purpose hardware.
[0244] At 2005, the method may include transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states. The operations of block 2005 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2005 may be performed by a reference signal manager 1325 as described with reference to FIG. 13.
[0245] At 2010, the method may include transmitting a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The operations of block 2010 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2010 may be performed by a TCI state manager 1330 as described with reference to FIG. 13.
[0246] At 2015, the method may include communicating in accordance with the TCI state. The operations of block 2015 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2015 may be performed by a communication manager 1335 as described with reference to FIG. 13.
[0247] FIG. 21 shows a flowchart illustrating a method 2100 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with aspects of the present disclosure. The operations of the method 2100 may be implemented by a network entity or its components as described herein. For example, the operations of the method 2100 may be performed by a network entity as described with reference to FIGs. 1 through 6 and 11 through 14. In some examples, a network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally, or alternatively, the network entity may perform aspects of the described functions using special-purpose hardware.
[0248] At 2105, the method may include transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, where the first set of resources includes one or more DL resources. The operations of block 2105 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2105 may be performed by a reference signal manager 1325 as described with reference to FIG. 13.
[0249] At 2110, the method may include transmitting one or more reference signals via the first set of resources for measurement at the UE. The operations of block 2110 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2110 may be performed by a reference signal manager 1325 as described with reference to FIG. 13.
[0250] At 2115, the method may include transmitting a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The operations of block 2115 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2115 may be performed by a TCI state manager 1330 as described with reference to FIG. 13.
[0251] At 2120, the method may include communicating in accordance with the TCI state. The operations of block 2120 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2120 may be performed by a communication manager 1335 as described with reference to FIG. 13.
[0252] FIG. 22 shows a flowchart illustrating a method 2200 that supports transmission configuration indicator state activation based on DL beam prediction in accordance with aspects of the present disclosure. The operations of the method 2200 may be implemented by a network entity or its components as described herein. For example, the operations of the method 2200 may be performed by a network entity as described with reference to FIGs. 1 through 6 and 11 through 14. In some examples, a network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally, or alternatively, the network entity may perform aspects of the described functions using special-purpose hardware.
[0253] At 2205, the method may include transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, where the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states, where the first set of resources includes one or more UL resources. The operations of block 2205 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2205 may be performed by a reference signal manager 1325 as described with reference to FIG. 13.
[0254] At 2210, the method may include receiving one or more reference signals via the first set of resources for measurement at the UE. The operations of block 2210 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2210 may be performed by a reference signal manager 1325 as described with reference to FIG. 13.
[0255] At 2215, the method may include transmitting a control message indicating a TCI state associated with a resource of the second set of resources based on a beam prediction procedure associated with the resource. The operations of block 2215 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2215 may be performed by a TCI state manager 1330 as described with reference to FIG. 13.
[0256] At 2220, the method may include communicating in accordance with the TCI state. The operations of block 2220 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 2220 may be performed by a communication manager 1335 as described with reference to FIG. 13.
[0257] The following provides an overview of aspects of the present disclosure:
[0258] Aspect 1: A method for wireless communication at a UE, comprising: receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, wherein the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states; receiving a control message indicating a TCI state associated with a resource of the second set of resources based at least in part on a beam prediction procedure associated with the resource; and communicating in accordance with the TCI state.
[0259] Aspect 2: The method of aspect 1, wherein the first set of resources comprises one or more DL resources, the method further comprising: receiving one or more reference signals via the first set of resources for measurement at the UE; and performing one or more channel measurements for the first set of resources, wherein the beam prediction procedure is based at least in part on measurements of the one or more reference signals, the measurements of the one or more reference signals based at least in part on the one or more channel measurements.
[0260] Aspect 3: The method of any of aspects 1 through 2, wherein the first set of resources comprises one or more UL resources, the method further comprising: transmitting one or more reference signals via the first set of resources.
[0261] Aspect 4: The method of any of aspects 1 through 3, wherein the second set of resources comprises one or more DL resources, the method further comprising: predicting measurements of one or more reference signals for the second set of resources based at least in part on communicating the one or more reference signals via the first set of resources; and transmitting a report indicating the predicted measurements, wherein the TCI state is based at least in part on the report.
[0262] Aspect 5: The method of any of aspects 1 through 4, wherein the second set of resources comprises one or more UL resources, the method further comprising: predicting measurements of one or more reference signals for the second set of resources based at least in part on communicating the one or more reference signals via the first set of resources.
[0263] Aspect 6: The method of any of aspects 1 through 5, wherein communicating in accordance with the TCI state comprises: communicating using a spatial filter, the spatial filter based at least in part on the TCI state and the resource.
[0264] Aspect 7: The method of any of aspects 1 through 6, wherein the control message comprises a first parameter indicating the resource and a second parameter indicating a resource of the first set of resources.
[0265] Aspect 8: The method of any of aspects 1 through 7, wherein the control message indicates that the TCI state is associated with a first TCI state type, a reference resource for the TCI state is based at least in part on the resource.
[0266] Aspect 9: The method of aspect 8, wherein receiving the control message comprises: receiving a MAC message indicating a TCI state identifier and one or more bits indicating the first TCI state type.
[0267] Aspect 10: The method of any of aspects 1 through 9, wherein the control message is a MAC message, the method further comprising: receiving a second MAC message indicating a second TCI state associated with a resource of the first set of resources.
[0268] Aspect 11: The method of aspect 10, wherein receiving the MAC message is based at least in part on the MAC message indicating the TCI state associated with the resource.
[0269] Aspect 12: The method of any of aspects 1 through 11, wherein the control message indicates a TCI state identifier and one or more bits indicating a transmission direction associated with the TCI state.
[0270] Aspect 13: The method of any of aspects 1 through 12, wherein receiving the control message comprises: receiving DL control information indicating that the UE is to switch the TCI state.
[0271] Aspect 14: The method of aspect 13, wherein the DL control information comprises a TCI switching field indicating a MAC message for activating the TCI state.
[0272] Aspect 15: The method of any of aspects 1 through 14, wherein communicating in accordance with the TCI state comprises: receiving a DL message via one or more transmission and reception points in accordance with the TCI state.
[0273] Aspect 16: The method of any of aspects 1 through 15, wherein communicating in accordance with the TCI state comprises: transmitting an UL message comprising at least one of an SRS, a PUCCH, or a PUSCH in accordance with the TCI state.
[0274] Aspect 17: A method for wireless communication at a network entity, comprising: transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a UE and of a second set of resources different from and non-overlapping with the first set of resources, wherein the first set of resources is associated with a first set of TCI states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states; transmitting a control message indicating a TCI state associated with a resource of the second set of resources based at least in part on a beam prediction procedure associated with the resource; and communicating in accordance with the TCI state.
[0275] Aspect 18: The method of aspect 17, wherein the first set of resources comprises one or more DL resources, the method further comprising: transmitting one or more reference signals via the first set of resources for measurement at the UE.
[0276] Aspect 19: The method of any of aspects 17 through 18, wherein the first set of resources comprises one or more UL resources, the method further comprising: receiving one or more reference signals via the first set of resources for measurement at the UE.
[0277] Aspect 20: The method of any of aspects 17 through 19, wherein communicating in accordance with the TCI state comprises: communicating using a spatial filter, the spatial filter based at least in part on the TCI state and the resource.
[0278] Aspect 21: The method of any of aspects 17 through 20, wherein the control message comprises a first parameter indicating the resource and a second parameter indicating a resource of the first set of resources.
[0279] Aspect 22: The method of any of aspects 17 through 21, wherein the control message indicates that the TCI state is associated with a first TCI state type, a reference resource for the TCI state is based at least in part on the resource.
[0280] Aspect 23: The method of aspect 22, wherein transmitting the control message comprises: transmitting a MAC message indicating a TCI state identifier and one or more bits indicating the first TCI state type.
[0281] Aspect 24: The method of any of aspects 17 through 23, wherein the control message is a MAC message, the method further comprising: transmitting a second MAC message indicating a second TCI state associated with a resource of the first set of resources.
[0282] Aspect 25: The method of aspect 24, wherein transmitting the MAC message is based at least in part on the MAC message indicating the TCI state associated with the resource.
[0283] Aspect 26: The method of any of aspects 17 through 25, wherein the control message indicates a TCI state identifier and one or more bits indicating a transmission direction associated with the TCI state.
[0284] Aspect 27: The method of any of aspects 17 through 26, wherein transmitting the control message comprises: transmitting DL control information indicating that the UE is to switch the TCI state.
[0285] Aspect 28: The method of aspect 27, wherein the DL control information comprises a TCI switching field indicating a MAC message for activating the TCI state.
[0286] Aspect 29: The method of any of aspects 17 through 28, wherein communicating in accordance with the TCI state comprises: transmitting a DL message via one or more transmission and reception points in accordance with the TCI state.
[0287] Aspect 30: The method of any of aspects 17 through 29, wherein communicating in accordance with the TCI state comprises: receiving an UL message comprising at least one of an SRS, a PUCCH, or a PUSCH in accordance with the TCI state.
[0288] Aspect 31: An apparatus for wireless communication at a UE, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 1 through 16.
[0289] Aspect 32: An apparatus for wireless communication at a UE, comprising at least one means for performing a method of any of aspects 1 through 16.
[0290] Aspect 33: A non-transitory computer-readable medium storing code for wireless communication at a UE, the code comprising instructions executable by a processor to perform a method of any of aspects 1 through 16.
[0291] Aspect 34: An apparatus for wireless communication at a network entity, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 17 through 30.
[0292] Aspect 35: An apparatus for wireless communication at a network entity, comprising at least one means for performing a method of any of aspects 17 through 30.
[0293] Aspect 36: A non-transitory computer-readable medium storing code for wireless communication at a network entity, the code comprising instructions executable by a processor to perform a method of any of aspects 17 through 30.
[0294] It should be noted that the methods described herein describe possible implementations, and that the operations and the steps may be rearranged or otherwise modified and that other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0295] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
[0296] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0297] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) .
[0298] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0299] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.
[0300] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”
[0301] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” can include receiving (e.g., receiving information) , accessing (e.g., accessing data stored in memory) and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.
[0302] In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label, or other subsequent reference label.
[0303] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration, ” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0304] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.An apparatus for wireless communication at a user equipment (UE) , comprising:a processor;memory coupled with the processor; andinstructions stored in the memory and executable by the processor to cause the apparatus to:receive an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, wherein the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states;receive a control message indicating a TCI state associated with a resource of the second set of resources based at least in part on a beam prediction procedure associated with the resource; andcommunicating in accordance with the TCI state.2.The apparatus of claim 1, wherein the first set of resources comprises one or more downlink resources, and the instructions are further executable by the processor to cause the apparatus to:receive one or more reference signals via the first set of resources for measurement at the UE; andperform one or more channel measurements for the first set of resources, wherein the beam prediction procedure is based at least in part on measurements of the one or more reference signals, the measurements of the one or more reference signals based at least in part on the one or more channel measurements.3.The apparatus of claim 1, wherein the first set of resources comprises one or more uplink resources, and the instructions are further executable by the processor to cause the apparatus to:transmit one or more reference signals via the first set of resources.4.The apparatus of claim 1, wherein the second set of resources comprises one or more downlink resources, and the instructions are further executable by the processor to cause the apparatus to:predict measurements of one or more reference signals for the second set of resources based at least in part on communicating the one or more reference signals via the first set of resources; andtransmit a report indicating the predicted measurements, wherein the TCI state is based at least in part on the report.5.The apparatus of claim 1, wherein the second set of resources comprises one or more uplink resources, and the instructions are further executable by the processor to cause the apparatus to:predict measurements of one or more reference signals for the second set of resources based at least in part on communicating the one or more reference signals via the first set of resources.6.The apparatus of claim 1, wherein the instructions to communicate in accordance with the TCI state are executable by the processor to cause the apparatus to:communicating used a spatial filter, the spatial filter based at least in part on the TCI state and the resource.7.The apparatus of claim 1, wherein the control message comprises a first parameter indicating the resource and a second parameter indicating a resource of the first set of resources.8.The apparatus of claim 1, wherein the control message indicates that the TCI state is associated with a first TCI state type, wherein a reference resource for the TCI state is based at least in part on the resource.9.The apparatus of claim 8, wherein the instructions to receive the control message are executable by the processor to cause the apparatus to:receive a media access control message indicating a TCI state identifier and one or more bits indicating the first TCI state type.10.The apparatus of claim 1, wherein the control message is a media access control message, and the instructions are further executable by the processor to cause the apparatus to:receive a second media access control message indicating a second TCI state associated with a resource of the first set of resources.11.The apparatus of claim 10, wherein receiving the media access control message is based at least in part on the media access control message indicating the TCI state associated with the resource.12.The apparatus of claim 1, wherein the control message indicates a TCI state identifier and one or more bits indicating a transmission direction associated with the TCI state.13.The apparatus of claim 1, wherein the instructions to receive the control message are executable by the processor to cause the apparatus to:receive downlink control information indicating that the UE is to switch the TCI state.14.The apparatus of claim 13, wherein the downlink control information comprises a TCI switching field indicating a media access control message for activating the TCI state.15.The apparatus of claim 1, wherein the instructions to communicate in accordance with the TCI state are executable by the processor to cause the apparatus to:receive a downlink message via one or more transmission and reception points in accordance with the TCI state.16.The apparatus of claim 1, wherein the instructions to communicate in accordance with the TCI state are executable by the processor to cause the apparatus to:transmit an uplink message comprising at least one of a sounding reference signal, a physical uplink control channel, or a physical uplink shared channel in accordance with the TCI state.17.An apparatus for wireless communication at a network entity, comprising:a processor;memory coupled with the processor; andinstructions stored in the memory and executable by the processor to cause the apparatus to:transmit an indication of a first set of resources configured for reference signal communications between the network entity and a user equipment (UE) and of a second set of resources different from and non-overlapping with the first set of resources, wherein the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states;transmit a control message indicating a TCI state associated with a resource of the second set of resources based at least in part on a beam prediction procedure associated with the resource; andcommunicating in accordance with the TCI state.18.The apparatus of claim 17, wherein the first set of resources comprises one or more downlink resources, and the instructions are further executable by the processor to cause the apparatus to:transmit one or more reference signals via the first set of resources for measurement at the UE.19.The apparatus of claim 17, wherein the first set of resources comprises one or more uplink resources, and the instructions are further executable by the processor to cause the apparatus to:receive one or more reference signals via the first set of resources for measurement at the UE.20.The apparatus of claim 17, wherein the instructions to communicate in accordance with the TCI state are executable by the processor to cause the apparatus to:communicating used a spatial filter, the spatial filter based at least in part on the TCI state and the resource.21.The apparatus of claim 17, wherein the control message comprises a first parameter indicating the resource and a second parameter indicating a resource of the first set of resources.22.The apparatus of claim 17, wherein the control message indicates that the TCI state is associated with a first TCI state type, wherein a reference resource for the TCI state is based at least in part on the resource.23.The apparatus of claim 22, wherein the instructions to transmit the control message are executable by the processor to cause the apparatus to:transmit a media access control message indicating a TCI state identifier and one or more bits indicating the first TCI state type.24.The apparatus of claim 17, wherein the control message is a media access control message, and the instructions are further executable by the processor to cause the apparatus to:transmit a second media access control message indicating a second TCI state associated with a resource of the first set of resources.25.The apparatus of claim 24, wherein transmitting the media access control message is based at least in part on the media access control message indicating the TCI state associated with the resource.26.The apparatus of claim 17, wherein the control message indicates a TCI state identifier and one or more bits indicating a transmission direction associated with the TCI state.27.The apparatus of claim 17, wherein the instructions to transmit the control message are executable by the processor to cause the apparatus to:transmit downlink control information indicating that the UE is to switch the TCI state.28.The apparatus of claim 27, wherein the downlink control information comprises a TCI switching field indicating a media access control message for activating the TCI state.29.A method for wireless communication at a user equipment (UE) , comprising:receiving an indication of a first set of resources configured for reference signal communications between the UE and a network entity and of a second set of resources different from and non-overlapping with the first set of resources, wherein the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states;receiving a control message indicating a TCI state associated with a resource of the second set of resources based at least in part on a beam prediction procedure associated with the resource; andcommunicating in accordance with the TCI state.30.A method for wireless communication at a network entity, comprising:transmitting an indication of a first set of resources configured for reference signal communications between the network entity and a user equipment (UE) and of a second set of resources different from and non-overlapping with the first set of resources, wherein the first set of resources is associated with a first set of transmission configuration indicator (TCI) states activated for the UE and the second set of resources is associated with a second set of TCI states different from the first set of TCI states;transmitting a control message indicating a TCI state associated with a resource of the second set of resources based at least in part on a beam prediction procedure associated with the resource; andcommunicating in accordance with the TCI state.