Techniques for indicating event-based beam reporting
By using multi-bit and single-bit PUCCHs to indicate event-based beam reporting, the challenges of coordinating multiple events in wireless communication systems are addressed, enhancing resource allocation and reducing signaling overhead for efficient beam reporting.
Patent Information
- Application Number
- PCT/CN2024/094121
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-05-20
- Publication Date
- 2025-11-27
AI Technical Summary
Existing wireless communication systems face challenges in efficiently indicating and coordinating event-based beam reporting due to the need for different signaling techniques when multiple events are configured, leading to inefficiencies in resource allocation and signaling overhead.
The implementation of multi-bit and single-bit physical uplink control channels (PUCCH) to indicate triggered events, allowing for accurate event reporting and reduced signaling overhead through efficient resource allocation and multiplexing with channel state information (CSI) reporting.
This approach enhances coordination between the network and user equipment (UE) by enabling effective event reporting, improving resource scheduling and reducing signaling overhead, thereby optimizing beam reporting processes.
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Figure CN2024094121_27112025_PF_FP_ABST
Abstract
Description
TECHNIQUES FOR INDICATING EVENT-BASED BEAM REPORTING
[0001] FIELD OF TECHNOLOGY
[0002] The following relates to wireless communications, including techniques for indicating event-based beam reporting.BACKGROUND
[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .SUMMARY
[0004] The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein.
[0005] A method for wireless communications by a user equipment (UE) is described. The method may include determining that one or more events of a set of multiple configured events are triggered at the UE based on one or more respective event conditions being satisfied, where each event of the set of multiple configured events is associated with event-based beam reporting, transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, where the first message includes a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, where the single-bit indicator is based on one or more event groups associated with the set of multiple configured events, and where a size of the multi-bit indicator is based on a quantity of the set of multiple configured events, and transmitting, via the one or more uplink resources, a second message including the event-based beam report for the one or more events, where transmission of the second message is based on transmission of the first message.
[0006] A UE for wireless communications is described. The UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the UE to determine that one or more events of a set of multiple configured events are triggered at the UE based on one or more respective event conditions being satisfied, where each event of the set of multiple configured events is associated with event-based beam reporting, transmit a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, where the first message includes a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, where the single-bit indicator is based on one or more event groups associated with the set of multiple configured events, and where a size of the multi-bit indicator is based on a quantity of the set of multiple configured events, and transmit, via the one or more uplink resources, a second message including the event-based beam report for the one or more events, where transmission of the second message is based on transmission of the first message.
[0007] Another UE for wireless communications is described. The UE may include means for determining that one or more events of a set of multiple configured events are triggered at the UE based on one or more respective event conditions being satisfied, where each event of the set of multiple configured events is associated with event-based beam reporting, means for transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, where the first message includes a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, where the single-bit indicator is based on one or more event groups associated with the set of multiple configured events, and where a size of the multi-bit indicator is based on a quantity of the set of multiple configured events, and means for transmitting, via the one or more uplink resources, a second message including the event-based beam report for the one or more events, where transmission of the second message is based on transmission of the first message.
[0008] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to determine that one or more events of a set of multiple configured events are triggered at the UE based on one or more respective event conditions being satisfied, where each event of the set of multiple configured events is associated with event-based beam reporting, transmit a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, where the first message includes a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, where the single-bit indicator is based on one or more event groups associated with the set of multiple configured events, and where a size of the multi-bit indicator is based on a quantity of the set of multiple configured events, and transmit, via the one or more uplink resources, a second message including the event-based beam report for the one or more events, where transmission of the second message is based on transmission of the first message.
[0009] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the first message may include operations, features, means, or instructions for selecting a single triggered event of the one or more events in accordance with a priority of the single triggered event, the priority being based on an event configuration identifier of the single triggered event, a cell identifier of the single triggered event, a selection criteria, or any combination thereof and transmitting the first message including the multi-bit indicator that includes an indication of the single triggered event.
[0010] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the first message may include operations, features, means, or instructions for transmitting the first message based on the one or more events including at least one event that satisfies a triggering condition.
[0011] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the size of the multi-bit indicator may be indicative of a quantity of the one or more events that may be triggered at the UE and at least one bit value of the multi-bit indicator supports an indication that the first message may be transmitted without an event being triggered.
[0012] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the size of the multi-bit indicator includes a quantity of ceil (log2 (N+1) ) bits for a single triggered event of the set of multiple configured events.
[0013] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the multi-bit indicator includes a quantity of N bits for at least one triggered event and at least one bit value of the multi-bit indicator supports an indication that the first message may be transmitted without an event being triggered.
[0014] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting one or more retransmissions of the first message based on an expiration of a timer.
[0015] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the first message may include operations, features, means, or instructions for transmitting the first message via an uplink control channel format 0 or an uplink control channel format 1, where the first message includes a multi-bit indicator of up to three bits.
[0016] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, responsive to the first message, a downlink control information (DCI) message including a scheduling of the one or more uplink resources to transmit the event-based beam report based on the single-bit indicator or the multi-bit indicator.
[0017] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the DCI message includes a parameter indicative of one or more event identifiers of the one or more events associated with the event-based beam report.
[0018] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the parameter may have a size of ceil (log2 (N) ) bits.
[0019] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the DCI message includes a channel state (CSI) information request field that includes an indication of one or more event identifiers of the one or more events associated with the event-based beam report.
[0020] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the indication of the one or more event identifiers of the one or more events may be included in a quantity of bits of the CSI request field and the quantity of bits corresponds to the quantity of the set of multiple configured events.
[0021] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the DCI message includes a parameter that schedules the one or more uplink resources for at least one event associated with the event-based beam report.
[0022] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, responsive to the first message, a DCI message includes a scheduling of the one or more uplink resources, where the DCI message includes a parameter that indicates a scheduling of an uplink report that may be different from the event-based beam report.
[0023] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the parameter may have a size of ceil (log2 (N+1) ) bits.
[0024] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the second message may include operations, features, means, or instructions for receiving one or more radio resource control (RRC) messages indicative of a scheduling configuration for transmission of the second message, where the scheduling configuration includes one or more parameters configured per-event identifier of the set of multiple configured events and transmitting the second message in accordance with the scheduling configuration.
[0025] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the one or more parameters include respective payload sizes corresponding to each event identifier, respective quantities of physical channel resources corresponding to each event identifier, or any combination thereof.
[0026] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the first message may include operations, features, means, or instructions for selecting at least one event of the one or more events from the set of multiple configured events and transmitting the first message including the multi-bit indicator including an indication of the at least one event, where a payload of the multi-bit indicator includes a bitmap of N bits.
[0027] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the second message may include operations, features, means, or instructions for transmitting, via the second message, the two or more reports in accordance with an indexing value of the two or more reports, where the indexing value includes respective event identifiers associated with the two or more reports, respective report identifiers associated with the two or more reports, respective cell identifiers associated with the two or more reports, or any combination thereof.
[0028] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the second message may include operations, features, means, or instructions for transmitting the two or more reports via the second message, where the two or more reports include an event identifier, a report identifier, a cell identifier, or any combination thereof, corresponding to respective events of the one or more events.
[0029] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the first message may include operations, features, means, or instructions for transmitting the first message including the single-bit indicator for an event group of the one or more event groups based on at least one event of an event group satisfying a triggering condition.
[0030] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the one or more event groups correspond to a respective one or more uplink control channel configurations associated with transmission of the first message.
[0031] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the first message includes at least one bit map that may be indicative of a correspondence between the one or more events and the one or more event groups.
[0032] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the second message may include operations, features, means, or instructions for transmitting, via the second message, one or more event-based beam reports that correspond to each of the one or more events of the one or more event groups, where the second message may have a fixed payload size.
[0033] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the second message may include operations, features, means, or instructions for transmitting, via the second message, a null report or a latest report for at least one event of the one or more events that fails to satisfy one or more triggering conditions for the event-based beam reporting.
[0034] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, transmitting the first message may include operations, features, means, or instructions for transmitting the first message multiplexed with a CSI report based on a collision between the first message and the CSI report.
[0035] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the single-bit indicator includes a quantity of N bits and the multi-bit indicator includes a quantity of ceil (log2 (N) ) bits.
[0036] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that the relative dimensions of the following figures may not be drawn to scale.BRIEF DESCRIPTION OF THE DRAWINGS
[0037] FIGs. 1, 2, and 3 show examples of wireless communications systems that support techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure.
[0038] FIG. 4 shows an example of a channel state information (CSI) multiplexing configuration that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure.
[0039] FIG. 5 shows an example of a process flow that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure.
[0040] FIGs. 6 and 7 show block diagrams of devices that support techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure.
[0041] FIG. 8 shows a block diagram of a communications manager that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure.
[0042] FIG. 9 shows a diagram of a system including a device that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure.
[0043] FIGs. 10 through 12 show flowcharts illustrating methods that support techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0044] Wireless networks may provide various mechanisms for a user equipment (UE) to transmit channel state information (CSI) reports which indicate various aspects of channel state and communications performance. In some aspects, the UE may utilize CSI reporting mechanism to support UE-initiated beam reporting or beam reporting that is otherwise driven by the occurrence of a specific event (e.g., event-based reporting) , such as a change in channel conditions or signal strength associated with one or more beams (e.g., one or more serving beams) . To initiate beam reporting, in some cases, the UE may transmit a first uplink control channel (e.g., a first physical uplink control channel (PUCCH) ) that requests a resource allocation for a second uplink channel (e.g., a second PUCCH, a physical uplink shared channel (PUSCH) ) to transmit the beam report. The network may allocate resources for the second uplink channel, and the UE may transmit the event-based beam report via the second uplink channel. In some other cases, the UE may indicate, via the first uplink control channel, a configured resource that the UE may use to transmit the event-driven beam report, and the UE may transmit the event-driven beam report via the indicated second uplink control channel. In some cases, however, the UE may be configured with multiple different events that may trigger event-based beam reporting, and different signaling techniques may be needed to effectively indicate which events have been triggered, and which events are being reported via the event-based beam reporting.
[0045] In some implementations, the UE can be configured with a multi-bit PUCCH and multiple (e.g., N) event configurations, and the UE may transmit the multi-bit PUCCH to indicate a single triggered event by having a payload size of ceil (log2 (N) ) bits or a payload that includes a bitmap of N bits. In some such implementations, the UE may be configured with a set of parameters for transmission of the event-based beam report for various different triggered events, or the network may transmit downlink control information (DCI) that indicates a scheduling for the event-driven beam report, which also may indicate which events that the scheduling is intended for. In some other implementations, the UE may be configured with a single-bit PUCCH, and multiple (e.g., N) event configurations which may be divided into M event groups sharing a same PUCCH configuration. The UE may transmit the single-bit PUCCH to indicate that at least one event included in an event group has satisfied a triggering condition, and may transmit the event-based beam report based on transmission of the single-bit PUCCH. In some other implementations, the UE may multiplex information of the first PUCCH with other CSI report information, which may reduce signaling overhead for beam reporting at the UE.
[0046] Aspects of the disclosure may be implemented to realize one or more potential advantages. For example, the configuration of multi-bit PUCCH and single-bit PUCCH to accurately indicate different triggered events at the UE may allow for improved coordination between the network and the UE, since the UE may be able to effectively convey events that impact signaling conditions or quality. Additionally, or alternatively, the techniques described herein may allow for more efficient scheduling for event-driven beam reporting based on the initial indication in the first multi-bit or single-bit PUCCH. Additionally, or alternatively, the techniques described herein may reduce signaling overhead based on the UEs ability to multiplex the PUCCH information with existing CSI reporting.
[0047] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are further illustrated by and described with reference to CSI multiplexing configurations, a process flow, apparatus diagrams, system diagrams, and flowcharts that relate to techniques for indicating event-based beam reporting.
[0048] FIG. 1 shows an example of a wireless communications system 100 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more devices, such as one or more network devices (e.g., network entities 105) , one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0049] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via communication link (s) 125 (e.g., a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish the communication link (s) 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
[0050] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices in the wireless communications system 100 (e.g., other wireless communication devices, including UEs 115 or network entities 105) , as shown in FIG. 1.
[0051] 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.
[0052] In some examples, network entities 105 may communicate with a core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via backhaul communication link (s) 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via backhaul communication link (s) 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via the core network 130) . In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication link (s) 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) or one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
[0053] One or more of the network entities 105 or network equipment described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within one network entity (e.g., a network entity 105 or a single RAN node, such as a base station 140) .
[0054] In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among multiple network entities (e.g., network entities 105) , such as an integrated access and backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 105 may include one or more of a central unit (CU) , such as a CU 160, a distributed unit (DU) , such as a DU 165, a radio unit (RU) , such as an RU 170, a RAN Intelligent Controller (RIC) , such as an RIC 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, such as an SMO system 180, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations) . In some examples, one or more of the network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
[0055] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, or any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaptation protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 (e.g., one or more CUs) may be connected to a DU 165 (e.g., one or more DUs) or an RU 170 (e.g., one or more RUs) , or some combination thereof, and the DUs 165, RUs 170, or both may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or multiple different RUs, such as an RU 170) . In some cases, a functional split between a CU 160 and a DU 165 or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to a DU 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to an RU 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities (e.g., one or more of the network entities 105) that are in communication via such communication links.
[0056] In some wireless communications systems (e.g., the wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) . In some cases, in an IAB network, one or more of the network entities 105 (e.g., network entities 105 or IAB node (s) 104) may be partially controlled by each other. The IAB node (s) 104 may be referred to as a donor entity or an IAB donor. A DU 165 or an RU 170 may be partially controlled by a CU 160 associated with a network entity 105 or base station 140 (such as a donor network entity or a donor base station) . The one or more donor entities (e.g., IAB donors) may be in communication with one or more additional devices (e.g., IAB node (s) 104) via supported access and backhaul links (e.g., backhaul communication link (s) 120) . IAB node (s) 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by one or more DUs (e.g., DUs 165) of a coupled IAB donor. An IAB-MT may be equipped with an independent set of antennas for relay of communications with UEs 115 or may share the same antennas (e.g., of an RU 170) of IAB node (s) 104 used for access via the DU 165 of the IAB node (s) 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB node (s) 104 may include one or more DUs (e.g., DUs 165) that support communication links with additional entities (e.g., IAB node (s) 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., the IAB node (s) 104 or components of the IAB node (s) 104) may be configured to operate according to the techniques described herein.
[0057] 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 test as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., components such as an IAB node, a DU 165, a CU 160, an RU 170, an RIC 175, an SMO system 180) .
[0058] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, vehicles, or meters, among other examples.
[0059] The UEs 115 described herein may be able to communicate with various types of devices, such as UEs 115 that may sometimes operate as relays, as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
[0060] The UEs 115 and the network entities 105 may wirelessly communicate with one another via the communication link (s) 125 (e.g., one or more access links) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined PHY layer structure for supporting the communication link (s) 125. For example, a carrier used for the communication link (s) 125 may include a portion of an RF spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more PHY layer channels for a given RAT (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each PHY layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network entity 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities, such as one or more of the network entities 105) .
[0061] 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.
[0062] 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) .
[0063] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems, such as the wireless communications system 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0064] 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) ) .
[0065] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to UEs 115 (e.g., one or more UEs) or may include UE-specific search space sets for sending control information to a UE 115 (e.g., a specific UE) .
[0066] In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area, such as the coverage area 110. In some examples, coverage areas 110 (e.g., different coverage areas) associated with different technologies may overlap, but the coverage areas 110 (e.g., different coverage areas) may be supported by the same network entity (e.g., a network entity 105) . In some other examples, overlapping coverage areas, such as a coverage area 110, associated with different technologies may be supported by different network entities (e.g., the network entities 105) . The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 support communications for coverage areas 110 (e.g., different coverage areas) using the same or different RATs.
[0067] 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.
[0068] In some examples, a UE 115 may be configured to support communicating directly with other UEs (e.g., one or more of the UEs 115) via a device-to-device (D2D) communication link, such as a D2D communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to one or more of the UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
[0069] 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.
[0070] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than one hundred kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
[0071] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) RAT, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0072] 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.
[0073] 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) .
[0074] 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.
[0075] Some signals, such as data signals associated with a particular receiving device, may be transmitted by a transmitting device (e.g., a network entity 105 or a UE 115) along a single beam direction (e.g., a direction associated with the receiving device, such as another network entity 105 or UE 115) . In some examples, the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted along one or more beam directions. For example, a UE 115 may receive one or more of the signals transmitted by the network entity 105 along different directions and may report to the network entity 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
[0076] 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) .
[0077] A receiving device (e.g., a UE 115) may perform reception operations in accordance with multiple receive configurations (e.g., directional listening) when receiving various signals from a transmitting device (e.g., a network entity 105) , such as synchronization signals, reference signals, beam selection signals, or other control signals. For example, a receiving device may perform reception in accordance with multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions. In some examples, a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) . The single receive configuration may be aligned along a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
[0078] The UEs 115 and the network entities 105 may support retransmissions of data to increase the likelihood that data is received successfully. Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly via a communication link (e.g., the communication link (s) 125, a D2D communication link 135) . HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC) ) , forward error correction (FEC) , and retransmission (e.g., automatic repeat request (ARQ) ) . HARQ may improve throughput at the MAC layer in relatively poor radio conditions (e.g., low signal-to-noise conditions) . In some examples, a device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific slot for data received via a previous symbol in the slot. In some other examples, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
[0079] A UE 115 may support beam reporting techniques such as UE-initiated (e.g., event-based, event-driven, event-triggered) beam management to reduce signaling overhead and latency for beam management. For example, the UE 115 may transmit a beam report to a network entity 105 after one or more event conditions for beam reporting are satisfied (e.g., after a current beam falls below a signal strength or quality, after a different beam exceeds a signal strength or quality of current beam, after a decoding quality of a current beam falls below a quality threshold, among other event triggers) . In some examples, the UE 115 may operate using a unified TCI framework for CSI measurement and reporting, sTRP with intra-cell and inter-cell beam management, or both, with support for FR2 and FR1. Additionally, or alternatively, the UE 115 may support UE-initiated or event-driven beam reporting to facilitate fast beam switching between different beams, which may allow for increased communications quality and signal strength. In some cases, the UE 115 may utilize signaling that is specific to UE-initiated or event-driven reporting, or may re-use other signaling to transmit UE-initiated or event-driven reporting.
[0080] A UE 115 may support UE-initiated beam reporting or beam reporting that is otherwise driven by the occurrence of a specific event (e.g., event-based reporting) . To initiate beam reporting, in some cases, the UE 115 may transmit a first uplink control channel (e.g., a first PUCCH) that requests a resource allocation for a second uplink channel (e.g., a second PUCCH, a PUSCH) to transmit the event-based beam report. The network entity 105 may allocate resources for the second uplink channel (e.g., based on the first uplink control channel) , and the UE 115 may transmit the event-based beam report via the second uplink channel. In some other cases, the UE 115 may indicate, via the first PUCCH, a configured resource that the UE 115 will use to transmit the event-driven beam report, and the UE 115 may transmit the event-driven beam report via the indicated second uplink control channel. In some cases, however, the UE 115 may be configured with multiple different events that may trigger event-based beam reporting, and the UE 115 may implement signaling techniques to effectively indicate which events are triggered, and which events are being reported via the event-based beam reporting.
[0081] In some implementations, the UE 115 can be configured with a multi-bit PUCCH and multiple (e.g., N) event configurations, and the UE 115 may transmit the multi-bit PUCCH to indicate a single triggered event by having a payload size of ceil (log2 (N) ) bits or a payload that includes a bitmap of N bits. In some such implementations, the UE 115 may be configured with a set of parameters for transmission of the event-based beam report for various different triggered events, or the network may transmit DCI which indicates a scheduling for the event-driven beam report, which also may indicate which events that the scheduling is intended for. In some other implementations, the UE 115 may be configured with a single-bit PUCCH, and multiple (e.g., N) event configurations which may be divided into M event groups sharing a same PUCCH configuration. The UE 115 may transmit the single-bit PUCCH to indicate that at least one event included in an event group has satisfied a triggering condition, and may transmit the event-based beam report based on transmission of the single-bit PUCCH. In some other implementations, the UE 115 may multiplex information of the first PUCCH with other CSI report information, which may reduce signaling overhead for beam reporting at the UE 115.
[0082] FIG. 2 shows an example of a wireless communications system 200 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. For example, the wireless communications system 200 may support communications between a network entity 105-a and a UE 115-a, which may be examples of corresponding network entities 105 and UEs 115 described with reference to FIG. 1, and described herein.
[0083] The wireless communications system 200 may support various beam management procedures to improve signal quality and reliability. For example, a wireless device may configure or activate periodic or semi-persistent beam reporting (e.g., to select a set of “best” beams and corresponding L1-RSRPs) or may trigger frequent aperiodic beam reporting to acquire beams for the communication of data and control information. In some aspects, however, periodic, aperiodic, and semi-persistent beam reporting may increase signaling overhead, and in at least some examples, relatively less frequent beam reporting by the UE 115-a may lead to outdated or inefficient beams used for communications, which may degrade signaling performance. To reduce signaling overhead and to increase the accuracy of beam reporting, the wireless communications system 200 may support event-based beam reporting (e.g., event-triggered beam reporting, event-driven beam reporting) , where the UE 115-a may transmit beam reports based on the satisfaction of one or more event triggers. For example, if the UE 115-a determines that the signal strength or signal quality associated with a current beam falls below a threshold, the UE 115-a may trigger beam reporting (with or without the network entity 105-a configuring resources for the beam reporting) . Additionally, or alternatively, the UE 115-a may trigger beam reporting based on identifying that one or more different beams have a signal strength or signal quality that is greater than a signal strength or signal quality of a current beam. In some other examples, the UE 115-a may trigger beam reporting based on identifying a decoding quality for a current beam that falls below a threshold decoding quality or based on a threshold quantity of failed decodes within a duration of time.
[0084] The UE 115-a may support one or more event-based (e.g., UE-initiated, event-driven) beam reporting modes. A first mode (e.g., “Mode A, ” a baseline mode supported by UE functionality) may allow the network entity 105-a to dynamically schedule resources for the UE 115-a to transmit uplink control information (UCI) including the event-based beam report. For example, the UE 115-a may transmit a first uplink message 205 (e.g., a first one-bit PUCCH or a first multi-bit PUCCH) that may include an indication of the triggered event, and requests a resource allocation for the transmission of a second uplink message 210 (e.g., a second uplink channel) including the event-based beam report. In some aspects, the UE 115-a may transmit the request in the form of a scheduling request or using one or more UCI types. Responsive to the first uplink message 205, the UE 115-a may detect a DCI 220 (e.g., a DCI format) which indicates a resource (e.g., a resource allocation) for a second uplink channel that the UE 115-a may use for transmission of the event-based beam report via the second uplink message 210. In some aspects, the second uplink channel may be a second PUCCH, a PUSCH, or both. The UE 115-a may transmit the event-based beam report in the second uplink message 210 via the second uplink channel.
[0085] A second mode (e.g., “Mode B” ) may allow the UE 115-a to transmit the event-based beam report in UCI via one or more pre-configured resources of a second uplink channel. Once an event is triggered (e.g., at least one of the set of multiple events 215) , the UE 115-a may transmit a first uplink message 205 (e.g., a first one-bit PUCCH or a first multi-bit PUCCH) that indicates (using a scheduling request or a UCI type) a second uplink channel that the UE 115-a will use to transmit the event-based beam report via a second uplink message 210. In some aspects, the second uplink channel may be a second PUCCH, a PUSCH, or both. The UE 115-a may transmit the event-based beam report via the second uplink channel. For the second reporting mode, the indication that the UE 115-a transmits via the first uplink message 205 is in a separate reporting instance from the event-based beam report transmitted in the second uplink message 210. For either or both of the first mode and the second mode, the UE 115-a may support cross-component carrier beam reporting, and may also receive (e.g., from the network entity 105-a) acknowledgment information in response to the first uplink message 205, the second uplink message 210, or both.
[0086] In some implementations, the UE 115-a may be configured with a set of multiple events 215 (e.g., one or more, a plurality) that may trigger the event-based beam reporting, and each event of the multiple events may be associated with a first uplink message 205. For example, the UE 115-a may transmit a first scheduling request or a first UCI via the first uplink message 205 after a first event (e.g., Event 1) is triggered, a second scheduling request or a second UCI via the first uplink message after a second event (e.g., Event 2) is triggered, and so on, and the network entity 105-a may use the information included in the first uplink message 205 to determine which event has been triggered at the UE 115-a. In some aspects, the network entity 105-a may configure the first uplink message 205 for the UE 115-a so that the first uplink message 205 is common to all events of the set of multiple events 215 at the UE 115-a, or the network entity 105-a may configure the first uplink message 205 so that there are separate first uplink messages for separate events of the set of multiple events 215. In some cases, however, separately configuring the first uplink message 205 for each of the different events may increase complexity and signaling overhead.
[0087] To support efficient event-triggered beam reporting, the UE 115-a may transmit the first uplink message 205 to indicate one or more events of the set of multiple events 215 triggered at the UE 115-a. For example, the UE 115-a may be configured with N event configurations (e.g., the quantity of events may be an integer value N) , and may be configured to transmit the first uplink message 205 as a multi-bit PUCCH. In some such examples, the PUCCH may be defined or RRC configured to include a single event identification of a single triggered event of the set of multiple events 215, and the payload size of the multi-bit PUCCH may be equal to ceil (log2 (N) ) bits. In some implementations, the ceil (log2 (N) ) payload of the multi-bit PUCCH may be indicative of the single triggered event at the UE 115-a. In some other examples, the PUCCH may be defined or RRC configured to include a triggered event identification (corresponding to one or more triggered events) of the set of multiple events 215, and the payload size of the multi-bit PUCCH may be equal to N bits, or an N bit bitmap. In some implementations, the N-bit bitmap of the multi-bit PUCCH may be indicative of one or more triggered events at the UE 115-a.
[0088] In some aspects, for values of N that are less than or equal to 3 (e.g., 3 or less event configurations) , the UE 115-a may transmit the multi-bit PUCCH using 3 bits in a PUCCH format 0 or a PUCCH format 1. For example, the 3 bits used in the PUCCH format 0 or a PUCCH format 1 (e.g., the scheduling request and HARQ bits) may be used for transmission of the indication of the single triggered event.
[0089] In examples where multiple events are triggered at the UE 115-a, the UE 115-a may select one event to include as the single event identification in the multi-bit PUCCH. For example, the UE 115-a may select one event based on a priority of the event (e.g., based on an event configuration identifier, a cell identifier, or both) . In some other examples, the UE 115-a may select one event based on other factors (e.g., UE implementation, a first event or last event triggered, random selection, among other factors) .
[0090] The network entity 105-a may use one or more techniques to detect or determine the presence of the multi-bit PUCCH from the UE 115-a. For example, the network entity 105-a may determine (e.g., implicitly) that the first uplink message 205 includes the multi-bit PUCCH using blind detection. In such examples, the UE 115-a may transmit the multi-bit PUCCH when at least one event of the set of multiple events 215 satisfies a triggering condition for event-based beam reporting, and the network entity 105-a may determine whether the received multi-bit PUCCH corresponds to the event-based beam reporting based on a received signal strength of the multi-bit PUCCH, a received signal-to-interference-plus-noise ratio (SINR) associated with the received multi-bit PUCCH. For example, if received multi-bit PUCCH has a signal strength or SINR of a received multi-bit PUCCH exceeds a threshold, the network entity 105-a may determine that the received multi-bit PUCCH corresponds to an indication of a triggered event at the UE 115-a. In some other implementations, the network entity 105-a may determine (e.g., explicitly) that there is no event that satisfied the triggering condition at the UE 115-a based on a defined payload of the multi-bit PUCCH. For example, the payload may include bits of all zeroes or all ones (e.g., all zeros or all ones may be indicative of no triggered event) , and the payload size may be ceil (log2 (N+1) ) if the multi-bit PUCCH corresponds to a single triggered event, or the payload size may be N if the multi-bit PUCCH corresponds to one or more triggered events. In some implementations, the UE 115-a may re-transmit the multi-bit PUCCH after a duration of time specified by a timer has elapsed without receiving a responsive communication from the network entity 105-a. Here, one or more techniques may be used for retransmitting indications of the one or more events of the set of multiple events 215 triggered at the UE 115-a (or indications of the absence of triggered events) .
[0091] In some implementations, the network entity 105-a may transmit the DCI 220 (e.g., an uplink scheduling DCI) in response to the first uplink message 205, which may dynamically schedule an uplink channel (e.g., a PUCCH or a PUSCH) that the UE 115-a may use to transmit the event-based beam report. In some aspects, the DCI 220 may include an indication of one or more of the triggered events for which the DCI 220 is intended to schedule resources for the event-based beam report. In some examples, the DCI 220 may include a parameter having a length of ceil (log2 (N) ) which may be optionally present for the UE 115-a that is configured to support the event-based beam reporting. This parameter in the DCI 220 may enable the UE 115-a to determine that the contents of the DCI 220 are intended for scheduling resources for transmission of the second uplink message 210 including the event-driven beam report. In some examples, the DCI 220 may include a parameter having a length of ceil (log2 (N+1) ) bits. This parameter in the DCI 220 may enable the UE 115-a to determine that the contents of the DCI 220 are not intended for scheduling resources for transmission of the second uplink message 210 including the event-driven beam report. In examples where the UE 115-a transmits the multi-bit PUCCH with an indication of multiple triggered events, the DCI 220 may include a parameter having a length of N’ bits (where N ≤N’ ) which may be optionally present. This parameter may allow the UE 115-a to determine that the contents of the DCI 220 are intended for scheduling resources for transmission of the second uplink message 210 including the event-based beam report for the multiple triggered events.
[0092] In some examples, the DCI 220 may include an event identifier in a channel state information (CSI) request field that has a bit length of a fixed integer value, or a length that is set to ceil (log2 (N) ) bits. In some examples, a quantity of entries in the CSI request field may be used to indicate the DCI as scheduling the event-based beam reporting (e.g., a first N entries in the CSI request field may be used, a last N entries in the CSI request field may be used, or other entries of the CSI request field) .
[0093] In some other implementations, the network entity 105-a may transmit one or more RRC messages including an RRC configuration that semi-statically configures or pre-configures the UE 115-a with a set of resources or parameters that the UE 115-a may use to transmit the event-driven beam report (e.g., without dynamic resource allocation via the DCI 220) . For example, the one or more RRC messages may include a set of parameters configured per event of the set of multiple events 215 (e.g., per event identifier) , which the UE 115-a may use to transmit the event-based beam report depending on which event is triggered. Additionally, or alternatively, the one or more RRC messages may include an indication of a payload size of the event-based beam report, a set of physical channel resources such as a quantity of resource blocks, a quantity of symbols, a modulation order, or any combination thereof. In such examples, the one or more RRC messages may include configuration information that is based on the UE 115-a using resources associated with the first PUCCH.
[0094] In some aspects, the UE 115-a may transmit multiple (e.g., two or more) beam reports that correspond to multiple triggered events via the second uplink channel. In some examples, the UE 115-a may transmit different event-driven beam reports in accordance with an indexing value, which may assign an order to the different event-driven beam reports. For example, the indexing value may be based on corresponding event identifiers of different triggered events, a report identifier corresponding to the different triggered events, a cell identifier associated with the different triggered events, or any combination thereof. The network entity 105-a may implicitly determine which different reports correspond to the different triggered events based on the ordering of the reports. In some other examples, the UE 115-a may include an indication of the triggered event, a report identifier, a cell identifier, or any combination thereof, as part of the report. The network entity 105-a may use the indication of the triggered event, a report identifier, a cell identifier, or any combination thereof, to explicitly identify different event-driven beam reports as corresponding to different triggered events. In some examples, the reports may include both the explicit indication of the triggered event, a report identifier, a cell identifier, or any combination thereof, and may be ordered in accordance with the indexing value.
[0095] FIG. 3 shows an example of a wireless communications system 300 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. For example, the wireless communications system 300 may support communications between a network entity 105-b and a UE 115-b, which may be examples of corresponding network entities 105 and UEs 115 described with reference to FIGs. 1 and 2, and described herein.
[0096] The UE 115-b may support one or more event-based (e.g., UE-initiated, event-driven) beam reporting modes. A first mode (e.g., “Mode A” ) may allow the network entity 105-b to dynamically schedule resources for the UE 115-b to transmit UCI including the event-based beam report. For example, the UE 115-b may transmit a first uplink message 305 (e.g., a first one-bit PUCCH or a first multi-bit PUCCH) that may include an indication of the triggered event, and requests a resource allocation for the transmission of a second uplink message 310 (e.g., a second uplink channel) including the event-based beam report. In some aspects, the UE 115-b may transmit the request in the form of a scheduling request or using one or more UCI types. Responsive to the first uplink message 305, the UE 115-b may detect a DCI (e.g., a DCI format) which indicates a resource (e.g., a resource allocation) for a second uplink channel that the UE 115-b may use for transmission of the event-based beam report via the second uplink message 310. In some aspects, the second uplink channel may be a second PUCCH, a PUSCH, or both. The UE 115-b may transmit the event-based beam report in the second uplink message 310 via the second uplink channel.
[0097] A second mode (e.g., “Mode B” ) may allow the UE 115-b to transmit the event-based beam report in UCI via one or more pre-configured resources of a second uplink channel. Once an event is triggered (e.g., at least one of the events of the event groups 0 and 1 or events 0 through 3) , the UE 115-b may transmit a first uplink message 305 (e.g., a first one-bit PUCCH or a first multi-bit PUCCH) that indicates a second uplink channel that the UE 115-b will use to transmit the event-based beam report via a second uplink message 310. In some aspects, the second uplink channel may be a second PUCCH, a PUSCH, or both. The UE 115-b may transmit the event-based beam report via the second uplink channel.
[0098] In some implementations, the UE 115-a may be configured with multiple events (e.g., one or more, a plurality) that may trigger the event-based beam reporting. In some aspects, the multiple events may be part of a set of one or more event groups 315 (which may include an Event Group 0 that is associated with Event 0 and Event 1, and / or an Event Group 1 that is associated with Event 2 and Event 3) . Additionally, or alternatively, the multiple events may be part of set of events 320 (e.g., including Event 0, Event 1, Event 2, Event 3, and so on) that may have a flattened structure (e.g., that are not associated with different event groups) . In some implementations, the UE 115-b may transmit a first scheduling request or a first UCI via the first uplink message 305 after at least one event is triggered from an event group.
[0099] To support efficient event-triggered beam reporting, the UE 115-b may transmit the first uplink message 305 to indicate one or more events (e.g., singular events or event groups) that are triggered at the UE 115-b. For example, the UE 115-b may be configured with N event configurations (e.g., the quantity of events may be an integer value N) that may be divided into M event groups, and may be configured to transmit the first uplink message 305 as a single-bit PUCCH. In some such examples, the PUCCH may be defined or configured to include an indication of one or more events or event groups that are triggered at the UE 115-b, where different events within an event group share a same PUCCH configuration.
[0100] In some implementations, a quantity of events N associated with event-based reporting may be grouped into a corresponding quantity of event groups M. Although the quantities of N and M may be any integer such that N ≥ M, FIG. 3 illustrates a quantity of N=4 event configurations (e.g., Event 0, Event 1, Event 2, Event 3) that may be grouped into M=2 event groups (e.g., Event Group 0 and Event Group 1) . In such examples, the events associated with a first event group (e.g., Events 0 and 1 associated with Event Group 0) may share a same PUCCH configuration for the first uplink message 305. In addition, the events associated with a second event group (e.g., Events 2 and 3 associated with Event Group 1) , may share a same PUCCH configuration for the first uplink message 305, which may be the same as or different from the PUCCH configuration associated with the first event group. In some aspects, the quantity of events may be considered an event group, as in the set of events 320, where N=M. In some other aspects, Event group 0 may have two events (e.g., Event 0, Event 1) , and Event group 1 may have two events (e.g., Event 2, Event 3) , and the UE 115-b may identify which events correspond to which event group using a bitmap. For example, Event group 0 may be represented by a bitmap ‘1100, ’ corresponding to Event 0 and Event 1, and Event Group 1 may be represented by a bitmap ‘0011’ corresponding to Event 2 and Event 3.
[0101] The UE 115-b may transmit the first uplink message 305 including the single-bit PUCCH when at least one event within an event group satisfies a triggering condition. The UE 115-b may transmit the second uplink message 310 via a second uplink channel (e.g., PUCCH, PUSCH, or both) which includes beam reports (e.g., UCIs) from all events that are triggered within the event group, and that have a fixed payload size. In examples where one or more events do not satisfy the triggering condition, the UE 115-b may modify the payload of the event-based beam report to indicate the one or more events that do not satisfy the triggering condition. For example, the payload for the one or more events that do not satisfy the triggering condition may have a payload sequence that is defined to indicate that there is no valid beam report for the event (e.g., null reporting) , such as a payload that includes all zeroes or all ones. In some other examples, the UE 115-b may re-send a most recent measurement irrespective of the triggering condition being met.
[0102] FIG. 4 shows an example of a CSI multiplexing configuration 400 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. For example, the CSI multiplexing configuration 400 may be implemented at or by a UE 115 as described herein.
[0103] To support efficient event-triggered beam reporting, a UE may transmit a first uplink message (e.g., a first PUCCH) to indicate one or more events (e.g., singular events such as event A or event B, or event groups) that are triggered at the UE. For example, the UE may be configured with N event configurations that may be divided into M event groups, and may be configured to transmit the first uplink message as a single-bit PUCCH. In some such examples, the PUCCH may be defined or configured to include an indication of one or more events or event groups that are triggered at the UE, where different events within an event group share a same PUCCH configuration.
[0104] In some cases, however, the first uplink message (e.g., one or more first PUCCHs) associated with one or more event groups may collide with a CSI report (e.g., a network-initiated CSI report or an event-based beam report) that is transmitted on PUCCH, PUSCH, or both. In such cases, the UE may multiplex information bits from the first uplink message into the CSI report.
[0105] For example, in a first configuration 405, the quantity of events N may be the same as the quantity of event groups M, and both the first PUCCH occasion for event A and the second PUCCH occasion for event B may be overlapping with the PUCCH occasion for CSI. In such examples, the UE may multiplex the first PUCCH for both events A and B (e.g., two bits, with one bit corresponding to each event) into the CSI. In some aspects, the first PUCCH may include a scheduling request for an event-based beam report corresponding to events A and B. In some other implementations, for example, in a second configuration 410, the quantity of events N may be the same as the quantity of event groups M, and both the first PUCCH occasion for event A may be overlapping with a second CSI occasion, and the second PUCCH occasion for event B may be overlapping with a first PUCCH occasion for CSI. In such examples, the UE may multiplex the first PUCCH (e.g., one bit) for event B into the first CSI, and may multiplex the first PUCCH (e.g., one bit) for event A into the second CSI.
[0106] FIG. 5 shows an example of a process flow 500 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. For example, the process flow 500 illustrates communications between a UE 115-c (which may be an example a UE 115 described herein) and a network entity 105-c (which may be an example of a network entity 105 described herein) .
[0107] Alternative examples of the following may be implemented. Some steps are performed in a different order than described or are not performed at all. In some implementations, steps may include additional features not mentioned below, or additional steps may be added. Further, although the UE 115-c and the network entity 105-c are shown performing the operations of the process flow 500, some aspects of some operations may also be performed by one or more other wireless communication devices.
[0108] At 505, the UE 115-c may determine that one or more events of a plurality of configured events are triggered at the UE 115-c based one or more respective event conditions being satisfied. In some aspects, each event of the plurality of configured events may be associated with event-based beam reporting.
[0109] At 510, the UE 115-c may transmit a first message (e.g., a first PUCCH) indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events. In some aspects, the first message may include a single-bit indicator or a multi-bit indicator that indicates the one or more events that are triggered, or that at least one event has satisfied a triggering condition. In some examples, the single-bit indicator may be based on one or more event groups associated with the plurality of configured events, and a size of the multi-bit indicator may be based on a quantity of the plurality of configured events.
[0110] In some implementations, the UE 115-c may select a single triggered event of the one or more events in accordance with a priority of the single triggered event, the priority being based on an event configuration identifier of the single triggered event, a cell identifier of the single triggered event, a selection criteria, or any combination thereof, and the UE 115-c may transmit the first message including the multi-bit indicator that includes the indication of the single triggered event. In some implementations, the size of the multi-bit indicator is indicative of a quantity of the one or more events that are triggered at the UE 115-c, and at least one bit value of the multi-bit indicator supports an indication that the first message is transmitted without an event being triggered. In some aspects, the payload or size of the multi-bit indicator may be equal to ceil (log2 (N+1) ) or N bits (e.g., a bitmap of N bits) , which may indicate the single triggered event of the plurality of configured events. In some aspects, the UE 115-c may transmit one or more retransmissions of the first message based on an expiration of a timer (e.g., after the timer has expired and the UE 115-c has not received responsive communication from the network entity 105-c) . In some aspects, the UE 115-c may transmit the first message via a PUCCH format 0 or a PUCCH 1, where the multi-bit indicator of the first message may include up to three bits.
[0111] In some other examples, the UE 115-c may transit the first message including a single-bit indicator (e.g., a single-bit PUCCH, a single-bit UCI via PUCCH) that corresponds to an event group of one or more event groups configured for the UE 115-c, where the event group is triggered based on at least one event included in the event group satisfying a triggering condition. In some aspects, the one or more event groups correspond to a respective one or more uplink control channel configurations associated with the transmission of the first message. In some aspects, the first message may include at least one bit map that is indicative of a correspondence between the one or more events and the one or more event groups.
[0112] In some other implementations, the UE 115-c may transmit the first message multiplexed with one or more other CSI reports based on a collision between the first message and the channel state information report.
[0113] At 515, the network entity 105-c may optionally transmit, and the UE 115-c may optionally receive, a DCI message that includes a scheduling indicative of the one or more uplink resources for transmitting the event-based beam report associated with the one or more events.
[0114] In some examples, the DCI message may include a parameter (with a size ceil (log2 (N) ) bits) that is indicative of one or more event identifiers of the one or more events associated with the event-based beam report. In some other examples, the DCI message may include a CSI request field that includes an indication of one or more event identifiers of the one or more events associated with the event-based beam report. In some aspects, the indication of the one or more event identifiers of the one or more events is included in a quantity of bits of the CSI request field, where the quantity of bits corresponds to the quantity of the plurality of configured events. In some examples, the DCI message may include a parameter (with a size ceil (log2 (N+1) ) bits) that schedules the one or more uplink resources for at least one event associated with the event-based beam report, or may indicate that the contents of the DCI message are for an uplink report that is different from the event-based beam report.
[0115] At 520, the UE 115-c may transmit, via the one or more uplink resources, a second message (e.g., a PUCCH transmission, a PUSCH transmission) that includes the event-based beam report for the one or more events.
[0116] In some implementations, the event-based beam report may include two or more reports associated with the one or more events, and the UE 115-c may transmit the two or more reports in accordance with an indexing value of the two or more reports. In some examples, the indexing value includes respective event identifiers associated with the two or more reports, respective report identifiers associated with the two or more reports, respective cell identifiers associated with the two or more reports, or any combination thereof. In some other examples, the UE 115-c may transmit the two or more reports, where each respective report includes an event identifier, a report identifier, a cell identifier, or any combination thereof, corresponding to respective events of the one or more events.
[0117] In some implementations, the second message may have a fixed payload size, and may include one or more event-based beam reports that correspond to each of the one or more events of the one or more event groups. In some examples, the UE 115-c may transmit the second message as a null report for at least one event of the one or more events that fails to satisfy the one or more triggering conditions for the event-based beam reporting. In some other examples, the UE 115-c may transmit a latest report for at least one event of the one or more events that fails to satisfy the one or more triggering conditions for the event-based beam reporting.
[0118] FIG. 6 shows a block diagram 600 of a device 605 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. The device 605 may be an example of aspects of a UE 115 as described herein. The device 605 may include a receiver 610, a transmitter 615, and a communications manager 620. The device 605, or one or more components of the device 605 (e.g., the receiver 610, the transmitter 615, the communications manager 620) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0119] The receiver 610 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for indicating event-based beam reporting) . Information may be passed on to other components of the device 605. The receiver 610 may utilize a single antenna or a set of multiple antennas.
[0120] The transmitter 615 may provide a means for transmitting signals generated by other components of the device 605. For example, the transmitter 615 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for indicating event-based beam reporting) . In some examples, the transmitter 615 may be co-located with a receiver 610 in a transceiver module. The transmitter 615 may utilize a single antenna or a set of multiple antennas.
[0121] The communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be examples of means for performing various aspects of techniques for indicating event-based beam reporting as described herein. For example, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0122] In some examples, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0123] Additionally, or alternatively, the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor (e.g., referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 620, the receiver 610, the transmitter 615, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0124] In some examples, the communications manager 620 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 610, the transmitter 615, or both. For example, the communications manager 620 may receive information from the receiver 610, send information to the transmitter 615, or be integrated in combination with the receiver 610, the transmitter 615, or both to obtain information, output information, or perform various other operations as described herein.
[0125] The communications manager 620 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 620 is capable of, configured to, or operable to support a means for determining that one or more events of a set of multiple configured events are triggered at the UE based on one or more respective event conditions being satisfied, where each event of the set of multiple configured events is associated with event-based beam reporting. The communications manager 620 is capable of, configured to, or operable to support a means for transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, where the first message includes a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, where the single-bit indicator is based on one or more event groups associated with the set of multiple configured events, and where a size of the multi-bit indicator is based on a quantity of the set of multiple configured events. The communications manager 620 is capable of, configured to, or operable to support a means for transmitting, via the one or more uplink resources, a second message including the event-based beam report for the one or more events, where transmission of the second message is based on transmission of the first message.
[0126] By including or configuring the communications manager 620 in accordance with examples as described herein, the device 605 (e.g., at least one processor controlling or otherwise coupled with the receiver 610, the transmitter 615, the communications manager 620, or a combination thereof) may support techniques for reduced power consumption, more efficient utilization of communication resources, improved communications quality due to effective beam management and beam switching, reduced signaling overhead and reduced power expenditure, among other benefits.
[0127] FIG. 7 shows a block diagram 700 of a device 705 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. The device 705 may be an example of aspects of a device 605 or a UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communications manager 720. The device 705, or one or more components of the device 705 (e.g., the receiver 710, the transmitter 715, the communications manager 720) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0128] 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 techniques for indicating event-based beam reporting) . Information may be passed on to other components of the device 705. The receiver 710 may utilize a single antenna or a set of multiple antennas.
[0129] 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 techniques for indicating event-based beam reporting) . In some examples, the transmitter 715 may be co-located with a receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.
[0130] The device 705, or various components thereof, may be an example of means for performing various aspects of techniques for indicating event-based beam reporting as described herein. For example, the communications manager 720 may include an event evaluation component 725, an event indication signaling component 730, an event-based beam reporting component 735, or any combination thereof. The communications manager 720 may be an example of aspects of a communications manager 620 as described herein. In some examples, the communications manager 720, 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 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.
[0131] The communications manager 720 may support wireless communications in accordance with examples as disclosed herein. The event evaluation component 725 is capable of, configured to, or operable to support a means for determining that one or more events of a set of multiple configured events are triggered at the UE based on one or more respective event conditions being satisfied, where each event of the set of multiple configured events is associated with event-based beam reporting. The event indication signaling component 730 is capable of, configured to, or operable to support a means for transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, where the first message includes a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, where the single-bit indicator is based on one or more event groups associated with the set of multiple configured events, and where a size of the multi-bit indicator is based on a quantity of the set of multiple configured events. The event-based beam reporting component 735 is capable of, configured to, or operable to support a means for transmitting, via the one or more uplink resources, a second message including the event-based beam report for the one or more events, where transmission of the second message is based on transmission of the first message.
[0132] FIG. 8 shows a block diagram 800 of a communications manager 820 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. The communications manager 820 may be an example of aspects of a communications manager 620, a communications manager 720, or both, as described herein. The communications manager 820, or various components thereof, may be an example of means for performing various aspects of techniques for indicating event-based beam reporting as described herein. For example, the communications manager 820 may include an event evaluation component 825, an event indication signaling component 830, an event-based beam reporting component 835, a scheduling configuration component 840, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0133] The communications manager 820 may support wireless communications in accordance with examples as disclosed herein. The event evaluation component 825 is capable of, configured to, or operable to support a means for determining that one or more events of a set of multiple configured events are triggered at the UE based on one or more respective event conditions being satisfied, where each event of the set of multiple configured events is associated with event-based beam reporting. The event indication signaling component 830 is capable of, configured to, or operable to support a means for transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, where the first message includes a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, where the single-bit indicator is based on one or more event groups associated with the set of multiple configured events, and where a size of the multi-bit indicator is based on a quantity of the set of multiple configured events. The event-based beam reporting component 835 is capable of, configured to, or operable to support a means for transmitting, via the one or more uplink resources, a second message including the event-based beam report for the one or more events, where transmission of the second message is based on transmission of the first message.
[0134] In some examples, to support transmitting the first message, the event evaluation component 825 is capable of, configured to, or operable to support a means for selecting a single triggered event of the one or more events in accordance with a priority of the single triggered event, the priority being based on an event configuration identifier of the single triggered event, a cell identifier of the single triggered event, a selection criteria, or any combination thereof. In some examples, to support transmitting the first message, the event indication signaling component 830 is capable of, configured to, or operable to support a means for transmitting the first message including the multi-bit indicator that includes an indication of the single triggered event.
[0135] In some examples, to support transmitting the first message, the event indication signaling component 830 is capable of, configured to, or operable to support a means for transmitting the first message based on the one or more events including at least one event that satisfies a triggering condition. In some examples, the size of the multi-bit indicator is indicative of a quantity of the one or more events that are triggered at the UE. In some examples, at least one bit value of the multi-bit indicator supports an indication that the first message is transmitted without an event being triggered. In some examples, the size of the multi-bit indicator includes a quantity of ceil (log2 (N+1) ) bits for a single triggered event of the set of multiple configured events.
[0136] In some examples, the multi-bit indicator includes a quantity of N bits for at least one triggered event. In some examples, at least one bit value of the multi-bit indicator supports an indication that the first message is transmitted without an event being triggered.
[0137] In some examples, the event indication signaling component 830 is capable of, configured to, or operable to support a means for transmitting one or more retransmissions of the first message based on an expiration of a timer. In some examples, to support transmitting the first message, the event indication signaling component 830 is capable of, configured to, or operable to support a means for transmitting the first message via an uplink control channel format 0 or an uplink control channel format 1, where the first message includes a multi-bit indicator of up to three bits.
[0138] In some examples, the scheduling configuration component 840 is capable of, configured to, or operable to support a means for receiving, responsive to the first message, a DCI message including a scheduling of the one or more uplink resources to transmit the event-based beam report based on the single-bit indicator or the multi-bit indicator. In some examples, the DCI message includes a parameter indicative of one or more event identifiers of the one or more events associated with the event-based beam report. In some examples, the parameter has a size of ceil (log2 (N) ) bits. In some examples, the DCI message includes a channel state information request field that includes an indication of one or more event identifiers of the one or more events associated with the event-based beam report.
[0139] In some examples, the indication of the one or more event identifiers of the one or more events is included in a quantity of bits of the channel state information request field. In some examples, the quantity of bits corresponds to the quantity of the set of multiple configured events.
[0140] In some examples, the DCI message includes a parameter that schedules the one or more uplink resources for at least one event associated with the event-based beam report.
[0141] In some examples, the scheduling configuration component 840 is capable of, configured to, or operable to support a means for receiving, responsive to the first message, a DCI message includes a scheduling of the one or more uplink resources, where the DCI message includes a parameter that indicates a scheduling of an uplink report that is different from the event-based beam report. In some examples, the parameter has a size of ceil (log2 (N+1) ) bits.
[0142] In some examples, to support transmitting the second message, the scheduling configuration component 840 is capable of, configured to, or operable to support a means for receiving one or more RRC messages indicative of a scheduling configuration for transmission of the second message, where the scheduling configuration includes one or more parameters configured per-event identifier of the set of multiple configured events. In some examples, to support transmitting the second message, the event-based beam reporting component 835 is capable of, configured to, or operable to support a means for transmitting the second message in accordance with the scheduling configuration.
[0143] In some examples, the one or more parameters include respective payload sizes corresponding to each event identifier, respective quantities of physical channel resources corresponding to each event identifier, or any combination thereof.
[0144] In some examples, to support transmitting the first message, the event evaluation component 825 is capable of, configured to, or operable to support a means for selecting at least one event of the one or more events from the set of multiple configured events. In some examples, to support transmitting the first message, the event indication signaling component 830 is capable of, configured to, or operable to support a means for transmitting the first message including the multi-bit indicator including an indication of the at least one event, where a payload of the multi-bit indicator includes a bitmap of N bits.
[0145] In some examples, to support transmitting the second message, the event-based beam reporting component 835 is capable of, configured to, or operable to support a means for transmitting, via the second message, the two or more reports in accordance with an indexing value of the two or more reports, where the indexing value includes respective event identifiers associated with the two or more reports, respective report identifiers associated with the two or more reports, respective cell identifiers associated with the two or more reports, or any combination thereof.
[0146] In some examples, to support transmitting the second message, the event-based beam reporting component 835 is capable of, configured to, or operable to support a means for transmitting the two or more reports via the second message, where the two or more reports include an event identifier, a report identifier, a cell identifier, or any combination thereof, corresponding to respective events of the one or more events.
[0147] In some examples, to support transmitting the first message, the event indication signaling component 830 is capable of, configured to, or operable to support a means for transmitting the first message including the single-bit indicator for an event group of the one or more event groups based on at least one event of an event group satisfying a triggering condition. In some examples, the one or more event groups correspond to a respective one or more uplink control channel configurations associated with transmission of the first message. In some examples, the first message includes at least one bit map that is indicative of a correspondence between the one or more events and the one or more event groups.
[0148] In some examples, to support transmitting the second message, the event-based beam reporting component 835 is capable of, configured to, or operable to support a means for transmitting, via the second message, one or more event-based beam reports that correspond to each of the one or more events of the one or more event groups, where the second message has a fixed payload size.
[0149] In some examples, to support transmitting the second message, the event-based beam reporting component 835 is capable of, configured to, or operable to support a means for transmitting, via the second message, a null report or a latest report for at least one event of the one or more events that fails to satisfy one or more triggering conditions for the event-based beam reporting.
[0150] In some examples, to support transmitting the first message, the event indication signaling component 830 is capable of, configured to, or operable to support a means for transmitting the first message multiplexed with a channel state information report based on a collision between the first message and the channel state information report. In some examples, the single-bit indicator includes a quantity of N bits, and the multi-bit indicator includes a quantity of ceil (log2 (N) ) bits.
[0151] FIG. 9 shows a diagram of a system 900 including a device 905 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. The device 905 may be an example of or include components of a device 605, a device 705, or a UE 115 as described herein. The device 905 may communicate (e.g., wirelessly) with one or more other devices (e.g., network entities 105, UEs 115, or a combination thereof) . The device 905 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 920, an input / output (I / O) controller, such as an I / O controller 910, a transceiver 915, one or more antennas 925, at least one memory 930, code 935, and at least one processor 940. 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 945) .
[0152] The I / O controller 910 may manage input and output signals for the device 905. The I / O controller 910 may also manage peripherals not integrated into the device 905. In some cases, the I / O controller 910 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 910 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 910 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 910 may be implemented as part of one or more processors, such as the at least one processor 940. In some cases, a user may interact with the device 905 via the I / O controller 910 or via hardware components controlled by the I / O controller 910.
[0153] In some cases, the device 905 may include a single antenna. However, in some other cases, the device 905 may have more than one antenna, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 915 may communicate bi-directionally via the one or more antennas 925 using wired or wireless links as described herein. For example, the transceiver 915 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 915 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 925 for transmission, and to demodulate packets received from the one or more antennas 925. The transceiver 915, or the transceiver 915 and one or more antennas 925, may be an example of a transmitter 615, a transmitter 715, a receiver 610, a receiver 710, or any combination thereof or component thereof, as described herein.
[0154] The at least one memory 930 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 930 may store computer-readable, computer-executable, or processor-executable code, such as the code 935. The code 935 may include instructions that, when executed by the at least one processor 940, cause the device 905 to perform various functions described herein. The code 935 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 935 may not be directly executable by the at least one processor 940 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 930 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0155] The at least one processor 940 may include one or more intelligent hardware devices (e.g., one or more general-purpose processors, one or more DSPs, one or more CPUs, one or more graphics processing units (GPUs) , one or more neural processing units (NPUs) (also referred to as neural network processors or deep learning processors (DLPs) ) , one or more microcontrollers, one or more ASICs, one or more FPGAs, one or more programmable logic devices, discrete gate or transistor logic, one or more discrete hardware components, or any combination thereof) . In some cases, the at least one processor 940 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 940. The at least one processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks supporting techniques for indicating event-based beam reporting) . For example, the device 905 or a component of the device 905 may include at least one processor 940 and at least one memory 930 coupled with or to the at least one processor 940, the at least one processor 940 and the at least one memory 930 configured to perform various functions described herein.
[0156] In some examples, the at least one processor 940 may include multiple processors and the at least one memory 930 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions described herein. In some examples, the at least one processor 940 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 940) and memory circuitry (which may include the at least one memory 930) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 940 or a processing system including the at least one processor 940 may be configured to, configurable to, or operable to cause the device 905 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code 935 (e.g., processor-executable code) stored in the at least one memory 930 or otherwise, to perform one or more of the functions described herein.
[0157] The communications manager 920 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 920 is capable of, configured to, or operable to support a means for determining that one or more events of a set of multiple configured events are triggered at the UE based on one or more respective event conditions being satisfied, where each event of the set of multiple configured events is associated with event-based beam reporting. The communications manager 920 is capable of, configured to, or operable to support a means for transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, where the first message includes a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, where the single-bit indicator is based on one or more event groups associated with the set of multiple configured events, and where a size of the multi-bit indicator is based on a quantity of the set of multiple configured events. The communications manager 920 is capable of, configured to, or operable to support a means for transmitting, via the one or more uplink resources, a second message including the event-based beam report for the one or more events, where transmission of the second message is based on transmission of the first message.
[0158] By including or configuring the communications manager 920 in accordance with examples as described herein, the device 905 may support techniques for improved communication reliability, reduced latency, more efficient utilization of communication resources, improved coordination between devices, improved communications quality due to effective beam management and beam switching, reduced signaling overhead and reduced power expenditure, among other benefits.
[0159] In some examples, the communications manager 920 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 915, the one or more antennas 925, or any combination thereof. Although the communications manager 920 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 920 may be supported by or performed by the at least one processor 940, the at least one memory 930, the code 935, or any combination thereof. For example, the code 935 may include instructions executable by the at least one processor 940 to cause the device 905 to perform various aspects of techniques for indicating event-based beam reporting as described herein, or the at least one processor 940 and the at least one memory 930 may be otherwise configured to, individually or collectively, perform or support such operations.
[0160] FIG. 10 shows a flowchart illustrating a method 1000 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. The operations of the method 1000 may be implemented by a UE or its components as described herein. For example, the operations of the method 1000 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. 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.
[0161] At 1005, the method may include determining that one or more events of a plurality of configured events are triggered at the UE based at least in part on one or more respective event conditions being satisfied, wherein each event of the plurality of configured events is associated with event-based beam reporting. The operations of 1005 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1005 may be performed by an event evaluation component 825 as described with reference to FIG. 8.
[0162] At 1010, the method may include transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, wherein the first message comprises a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, wherein the single-bit indicator is based on one or more event groups associated with the plurality of configured events, and wherein a size of the multi-bit indicator is based at least in part on a quantity of the plurality of configured events. The operations of 1010 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1010 may be performed by an event indication signaling component 830 as described with reference to FIG. 8.
[0163] At 1015, the method may include transmitting, via the one or more uplink resources, a second message comprising the event-based beam report for the one or more events, wherein transmission of the second message is based at least in part on transmission of the first message. The operations of 1015 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1015 may be performed by an event-based beam reporting component 835 as described with reference to FIG. 8.
[0164] FIG. 11 shows a flowchart illustrating a method 1100 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. The operations of the method 1100 may be implemented by a UE or its components as described herein. For example, the operations of the method 1100 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. 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.
[0165] At 1105, the method may include determining that one or more events of a plurality of configured events are triggered at the UE based at least in part on one or more respective event conditions being satisfied, wherein each event of the plurality of configured events is associated with event-based beam reporting. The operations of 1105 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1105 may be performed by an event evaluation component 825 as described with reference to FIG. 8.
[0166] At 1110, the method may include a single triggered event of the one or more events in accordance with a priority of the single triggered event, the priority being based at least in part on an event configuration identifier of the single triggered event, a cell identifier of the single triggered event, a selection criteria, or any combination thereof. The operations of 1110 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1110 may be performed by an event evaluation component 825 as described with reference to FIG. 8.
[0167] At 1115, the method may include transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, wherein the first message comprises a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, wherein the single-bit indicator is based on one or more event groups associated with the plurality of configured events, wherein a size of the multi-bit indicator is based at least in part on a quantity of the plurality of configured events, and wherein the first message comprises the multi-bit indicator that includes an indication of the single triggered event. The operations of 1115 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1115 may be performed by an event indication signaling component 830 as described with reference to FIG. 8.
[0168] At 1120, the method may include transmitting, via the one or more uplink resources, a second message comprising the event-based beam report for the one or more events, wherein transmission of the second message is based at least in part on transmission of the first message. The operations of 1120may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1120may be performed by an event-based beam reporting component 835 as described with reference to FIG. 8.
[0169] FIG. 12 shows a flowchart illustrating a method 1200 that supports techniques for indicating event-based beam reporting in accordance with one or more aspects of the present disclosure. The operations of the method 1200 may be implemented by a UE or its components as described herein. For example, the operations of the method 1200 may be performed by a UE 115 as described with reference to FIGs. 1 through 9. 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.
[0170] At 1205, the method may include determining that one or more events of a plurality of configured events are triggered at the UE based at least in part on one or more respective event conditions being satisfied, wherein each event of the plurality of configured events is associated with event-based beam reporting. The operations of 1205 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed by an event evaluation component 825 as described with reference to FIG. 8.
[0171] At 1210, the method may include transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, wherein the first message comprises a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, wherein the single-bit indicator is based on one or more event groups associated with the plurality of configured events, wherein a size of the multi-bit indicator is based at least in part on a quantity of the plurality of configured events, and wherein the first message comprises the single-bit indicator for an event group of the one or more event groups based at least in part on at least one event of an event group satisfying a triggering condition. The operations of 1210 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed by an event indication signaling component 830 as described with reference to FIG. 8.
[0172] At 1215, the method may include transmitting, via the one or more uplink resources, a second message comprising the event-based beam report for the one or more events, wherein transmission of the second message is based at least in part on transmission of the first message. The operations of 1215 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed by an event-based beam reporting component 835 as described with reference to FIG. 8.
[0173] The following provides an overview of aspects of the present disclosure:
[0174] Aspect 1: A method for wireless communications at a UE, comprising: determining that one or more events of a plurality of configured events are triggered at the UE based at least in part on one or more respective event conditions being satisfied, wherein each event of the plurality of configured events is associated with event-based beam reporting; transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, wherein the first message comprises a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, wherein the single-bit indicator is based on one or more event groups associated with the plurality of configured events, and wherein a size of the multi-bit indicator is based at least in part on a quantity of the plurality of configured events; and transmitting, via the one or more uplink resources, a second message comprising the event-based beam report for the one or more events, wherein transmission of the second message is based at least in part on transmission of the first message.
[0175] Aspect 2: The method of aspect 1, wherein transmitting the first message comprises: selecting a single triggered event of the one or more events in accordance with a priority of the single triggered event, the priority being based at least in part on an event configuration identifier of the single triggered event, a cell identifier of the single triggered event, a selection criteria, or any combination thereof; and transmitting the first message comprising the multi-bit indicator that includes an indication of the single triggered event.
[0176] Aspect 3: The method of any of aspects 1 through 2, wherein transmitting the first message comprises: transmitting the first message based at least in part on the one or more events comprising at least one event that satisfies a triggering condition.
[0177] Aspect 4: The method of any of aspects 1 through 3, wherein the size of the multi-bit indicator is indicative of a quantity of the one or more events that are triggered at the UE, and at least one bit value of the multi-bit indicator supports an indication that the first message is transmitted without an event being triggered.
[0178] Aspect 5: The method of aspect 4, wherein the size of the multi-bit indicator comprises a quantity of ceil (log2 (N+1) ) bits for a single triggered event of the plurality of configured events.
[0179] Aspect 6: The method of any of aspects 4 through 5, wherein the multi-bit indicator comprises a quantity of N bits for at least one triggered event, and at least one bit value of the multi-bit indicator supports an indication that the first message is transmitted without an event being triggered.
[0180] Aspect 7: The method of any of aspects 1 through 6, further comprising: transmitting one or more retransmissions of the first message based at least in part on an expiration of a timer.
[0181] Aspect 8: The method of any of aspects 1 through 7, wherein transmitting the first message comprises: transmitting the first message via an uplink control channel format 0 or an uplink control channel format 1, wherein the first message comprises a multi-bit indicator of up to three bits.
[0182] Aspect 9: The method of any of aspects 1 through 8, further comprising: receiving, responsive to the first message, a DCI message comprising a scheduling of the one or more uplink resources to transmit the event-based beam report based at least in part on the single-bit indicator or the multi-bit indicator.
[0183] Aspect 10: The method of aspect 9, wherein the DCI message comprises a parameter indicative of one or more event identifiers of the one or more events associated with the event-based beam report.
[0184] Aspect 11: The method of aspect 10, wherein the parameter has a size of ceil (log2 (N) ) bits.
[0185] Aspect 12: The method of any of aspects 9 through 11, wherein the DCI message comprises a CSI request field that includes an indication of one or more event identifiers of the one or more events associated with the event-based beam report.
[0186] Aspect 13: The method of aspect 12, wherein the indication of the one or more event identifiers of the one or more events is included in a quantity of bits of the CSI request field, the quantity of bits corresponds to the quantity of the plurality of configured events.
[0187] Aspect 14: The method of any of aspects 9 through 13, wherein the DCI message includes a parameter that schedules the one or more uplink resources for at least one event associated with the event-based beam report.
[0188] Aspect 15: The method of any of aspects 1 through 14, further comprising: receiving, responsive to the first message, a DCI message comprises a scheduling of the one or more uplink resources, wherein the DCI message includes a parameter that indicates a scheduling of an uplink report that is different from the event-based beam report.
[0189] Aspect 16: The method of aspect 15, wherein the parameter has a size of ceil (log2 (N+1) ) bits.
[0190] Aspect 17: The method of any of aspects 1 through 16, wherein transmitting the second message further comprises: receiving one or more RRC messages indicative of a scheduling configuration for transmission of the second message, wherein the scheduling configuration comprises one or more parameters configured per-event identifier of the plurality of configured events; and transmitting the second message in accordance with the scheduling configuration.
[0191] Aspect 18: The method of aspect 17, wherein the one or more parameters comprise respective payload sizes corresponding to each event identifier, respective quantities of physical channel resources corresponding to each event identifier, or any combination thereof.
[0192] Aspect 19: The method of any of aspects 1 through 18, wherein transmitting the first message comprises: selecting at least one event of the one or more events from the plurality of configured events; and transmitting the first message comprising the multi-bit indicator including an indication of the at least one event, wherein a payload of the multi-bit indicator comprises a bitmap of N bits.
[0193] Aspect 20: The method of any of aspects 1 through 19, wherein the event-based beam report comprises two or more reports associated with the one or more events, wherein transmitting the second message comprises: transmitting, via the second message, the two or more reports in accordance with an indexing value of the two or more reports, wherein the indexing value comprises respective event identifiers associated with the two or more reports, respective report identifiers associated with the two or more reports, respective cell identifiers associated with the two or more reports, or any combination thereof.
[0194] Aspect 21: The method of any of aspects 1 through 20, wherein the event-based beam report comprises two or more reports associated with the one or more events, wherein transmitting the second message comprises: transmitting the two or more reports via the second message, wherein the two or more reports include an event identifier, a report identifier, a cell identifier, or any combination thereof, corresponding to respective events of the one or more events.
[0195] Aspect 22: The method of any of aspects 1 through 21, wherein transmitting the first message comprises: transmitting the first message comprising the single-bit indicator for an event group of the one or more event groups based at least in part on at least one event of an event group satisfying a triggering condition.
[0196] Aspect 23: The method of aspect 22, wherein the one or more event groups correspond to a respective one or more uplink control channel configurations associated with transmission of the first message.
[0197] Aspect 24: The method of any of aspects 22 through 23, wherein the first message includes at least one bit map that is indicative of a correspondence between the one or more events and the one or more event groups.
[0198] Aspect 25: The method of any of aspects 1 through 24, wherein transmitting the second message comprises: transmitting, via the second message, one or more event-based beam reports that correspond to each of the one or more events of the one or more event groups, wherein the second message has a fixed payload size.
[0199] Aspect 26: The method of aspect 25, wherein transmitting the second message comprises: transmitting, via the second message, a null report or a latest report for at least one event of the one or more events that fails to satisfy one or more triggering conditions for the event-based beam reporting.
[0200] Aspect 27: The method of any of aspects 1 through 26, wherein transmitting the first message comprises: transmitting the first message multiplexed with a CSI report based at least in part on a collision between the first message and the CSI report.
[0201] Aspect 28: The method of any of aspects 1 through 27, wherein the single-bit indicator comprises a quantity of N bits and the multi-bit indicator comprises a quantity of ceil (log2 (N) ) bits.
[0202] Aspect 29: A UE for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 1 through 28.
[0203] Aspect 30: A UE for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 28.
[0204] Aspect 31: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 1 through 28.
[0205] It should be noted that the methods described herein describe possible implementations. The operations and the steps may be rearranged or otherwise modified and other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0206] 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.
[0207] 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.
[0208] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, a graphics processing unit (GPU) , a neural processing unit (NPU) , an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
[0209] 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.
[0210] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0211] 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. ”
[0212] As used herein, including in the claims, the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. For example, if a claim recites “acomponent” that performs one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “acomponent” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
[0213] 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.
[0214] 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.
[0215] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some figures, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0216] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment (UE) , comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:determine that one or more events of a plurality of configured events are triggered at the UE based at least in part on one or more respective event conditions being satisfied, wherein each event of the plurality of configured events is associated with event-based beam reporting;transmit a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, wherein the first message comprises a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, wherein the single-bit indicator is based on one or more event groups associated with the plurality of configured events, and wherein a size of the multi-bit indicator is based at least in part on a quantity of the plurality of configured events; andtransmit, via the one or more uplink resources, a second message comprising the event-based beam report for the one or more events, wherein transmission of the second message is based at least in part on transmission of the first message.2.The UE of claim 1, wherein, to transmit the first message, the one or more processors are individually or collectively operable to execute the code to cause the UE to:select a single triggered event of the one or more events in accordance with a priority of the single triggered event, the priority being based at least in part on an event configuration identifier of the single triggered event, a cell identifier of the single triggered event, a selection criteria, or any combination thereof; andtransmit the first message comprising the multi-bit indicator that includes an indication of the single triggered event.3.The UE of claim 1, wherein the size of the multi-bit indicator is indicative of a quantity of the one or more events that are triggered at the UE, and at least one bit value of the multi-bit indicator supports an indication that the first message is transmitted without an event being triggered.4.The UE of claim 3, wherein the size of the multi-bit indicator comprises a quantity of ceil (log2 (N+1) ) bits for a single triggered event of the plurality of configured events, or the multi-bit indicator comprises a quantity of N bits for at least one triggered event.5.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:transmit one or more retransmissions of the first message based at least in part on an expiration of a timer.6.The UE of claim 1, wherein, to transmit the first message, the one or more processors are individually or collectively operable to execute the code to cause the UE to:transmit the first message via an uplink control channel format 0 or an uplink control channel format 1, wherein the first message comprises a multi-bit indicator of up to three bits.7.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive, responsive to the first message, a downlink control information message comprising a scheduling of the one or more uplink resources to transmit the event-based beam report based at least in part on the single-bit indicator or the multi-bit indicator.8.The UE of claim 7, wherein the downlink control information message comprises a parameter indicative of one or more event identifiers of the one or more events associated with the event-based beam report, and the parameter has a size of ceil (log2 (N) ) bits.9.The UE of claim 7, wherein the downlink control information message comprises a channel state information request field that includes an indication of one or more event identifiers of the one or more events associated with the event-based beam report.10.The UE of claim 7, wherein the downlink control information message includes a parameter that schedules the one or more uplink resources for at least one event associated with the event-based beam report.11.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive, responsive to the first message, a downlink control information message comprises a scheduling of the one or more uplink resources, wherein the downlink control information message includes a parameter that indicates a scheduling of an uplink report that is different from the event-based beam report, and the parameter has a size of ceil (log2 (N+1) ) bits.12.The UE of claim 1, wherein, to transmit the second message, the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive one or more radio resource control messages indicative of a scheduling configuration for transmission of the second message, wherein the scheduling configuration comprises one or more parameters configured per-event identifier of the plurality of configured events, and wherein the one or more parameters comprise respective payload sizes corresponding to each event identifier, respective quantities of physical channel resources corresponding to each event identifier, or any combination thereof; andtransmit the second message in accordance with the scheduling configuration.13.The UE of claim 1, wherein, to transmit the first message, the one or more processors are individually or collectively operable to execute the code to cause the UE to:select at least one event of the one or more events from the plurality of configured events; andtransmit the first message comprising the multi-bit indicator including an indication of the at least one event, wherein a payload of the multi-bit indicator comprises a bitmap of N bits.14.The UE of claim 1, wherein, to transmit the second message, the one or more processors are individually or collectively operable to execute the code to cause the UE to:transmit, via the second message, two or more reports in accordance with an indexing value of the two or more reports, wherein the indexing value comprises respective event identifiers associated with the two or more reports, respective report identifiers associated with the two or more reports, respective cell identifiers associated with the two or more reports, or any combination thereof, or the two or more reports include an event identifier, a report identifier, a cell identifier, or any combination thereof, corresponding to respective events of the one or more events.15.The UE of claim 1, wherein, to transmit the first message, the one or more processors are individually or collectively operable to execute the code to cause the UE to:transmit the first message comprising the single-bit indicator for an event group of the one or more event groups based at least in part on at least one event of an event group satisfying a triggering condition.16.The UE of claim 15, wherein the one or more event groups correspond to a respective one or more uplink control channel configurations associated with transmission of the first message, and the first message includes at least one bit map that is indicative of a correspondence between the one or more events and the one or more event groups.17.The UE of claim 1, wherein, to transmit the second message, the one or more processors are individually or collectively operable to execute the code to cause the UE to:transmit, via the second message, one or more event-based beam reports that correspond to each of the one or more events of the one or more event groups, wherein the second message has a fixed payload size.18.The UE of claim 1, wherein, to transmit the first message, the one or more processors are individually or collectively operable to execute the code to cause the UE to:transmit the first message multiplexed with a channel state information report based at least in part on a collision between the first message and the channel state information report.19.A method for wireless communications at a user equipment (UE) , comprising:determining that one or more events of a plurality of configured events are triggered at the UE based at least in part on one or more respective event conditions being satisfied, wherein each event of the plurality of configured events is associated with event-based beam reporting;transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, wherein the first message comprises a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, wherein the single-bit indicator is based on one or more event groups associated with the plurality of configured events, and wherein a size of the multi-bit indicator is based at least in part on a quantity of the plurality of configured events; andtransmitting, via the one or more uplink resources, a second message comprising the event-based beam report for the one or more events, wherein transmission of the second message is based at least in part on transmission of the first message.20.A user equipment (UE) for wireless communications, comprising:means for determining that one or more events of a plurality of configured events are triggered at the UE based at least in part on one or more respective event conditions being satisfied, wherein each event of the plurality of configured events is associated with event-based beam reporting;means for transmitting a first message indicative of one or more uplink resources for transmitting an event-based beam report associated with the one or more events, wherein the first message comprises a single-bit indicator or a multi-bit indicator indicating the one or more events that are triggered, wherein the single-bit indicator is based on one or more event groups associated with the plurality of configured events, and wherein a size of the multi-bit indicator is based at least in part on a quantity of the plurality of configured events; andmeans for transmitting, via the one or more uplink resources, a second message comprising the event-based beam report for the one or more events, wherein transmission of the second message is based at least in part on transmission of the first message.
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