Floating reference signal reporting
By receiving multiple TCI state configurations and sending RS reports based on different periodic RS resources, the detection delay and signaling overhead issues when beam quality changes are resolved, enabling fast and accurate beam management and autonomous handover.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-09
- Publication Date
- 2026-03-27
AI Technical Summary
In existing technologies, user equipment (UE) has difficulty detecting and reporting significant changes in the serving beam in a timely manner when beam quality changes, resulting in large beam management delays, high overhead, and inaccurate reporting. This is especially true when attenuation is severe in the high frequency range, making it difficult to dynamically update the TCI status.
The UE receives the TCI status configuration indicating multiple periodic RS resources, sends RS reports based on different periodic RS resources, implements floating reference signal identifiers, reduces signaling overhead, supports autonomous beam switching, and avoids dynamic reconfiguration of periodic RS resources.
It enables faster beam switching and reporting, reduces signaling overhead and impact on other UEs, and improves the flexibility and accuracy of beam management.
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Figure CN121753388A_ABST
Abstract
Description
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS
[0002] This patent application claims priority to International Patent Application No. PCT / CN2023 / 116109, filed August 31, 2023, entitled “FLOATING REFERENCE SIGNAL REPORTING” and assigned to the assignee hereof. The disclosure of the priority application is considered part of the disclosure of this patent application and is hereby incorporated by reference into this patent application. TECHNICAL FIELD
[0003] Aspects of the present disclosure relate generally to wireless communication and to techniques and apparatuses for floating reference signal reporting. BACKGROUND
[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems can employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3 GPP).
[0005] A wireless network can include one or more network nodes that support communications for wireless communication devices, such as a user equipment (UE) or multiple UEs. A UE can communicate with a network node via downlink communications and uplink communications. “Downlink” (or “DL”) refers to communications from network nodes to UEs, and “uplink” (or “UL”) refers to communications from UEs to network nodes. Some wireless networks can support device-to-device communications, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, among others).
[0006] The above multiple access technologies have been adopted in various telecommunication standards to provide common protocols that enable different UEs to communicate on a municipal, national, regional, and / or global level. 5G, which can be referred to as New Radio (NR), is a set of enhancements to the LTE mobile standard promulgated by 3GPP. 5G is designed to provide faster data rates, lower latency, and more reliable mobile connections. It is designed to support a wider variety of devices and applications than previous generations of wireless technology, including massive Internet of Things (IoT) deployments and mission-critical services. 4G, 5G, and other radio access technologies (RATs) continue to evolve and improve, and further improvements remain useful. SUMMARY
[0007] A user equipment (UE) can measure a reference signal (RS) for various purposes. For example, a UE can measure a RS, such as a channel state information RS (CSI-RS) or a synchronization signal block (SSB), for beam management, such as to select or refine a suitable serving beam. The UE can report information about the measured RS to a network node. Generally, a RS can be configured using a RS resource configuration, such as a channel state information (CSI) resource configuration. For example, a UE can report information about a RS transmitted on a CSI-RS resource defined by a CSI resource configuration, and the reported information can be derived from measurements of the CSI-RS resource according to the CSI resource configuration. The UE can report information about a measured RS according to a reporting configuration, which can indicate a resource identifier that identifies a RS resource. For example, a RS resource can be identified by an identifier, such as a CSI-RS resource identifier or a SSB identifier. The identifier can be configured semi-statically for the RS resource (e.g., via parameters NZP-CSI-RS-ResourceId, NZP-CSI-RS-ResourceSetId, and / or CSI-ResourceConfigId), and can be configured semi-statically in a reporting configuration for the UE.
[0008] RS resources (such as CSI-RS resources) and reporting configurations can generally be configured by semi-static signaling, such as radio resource control (RRC) signaling. For example, some RS resources can be configured via semi-static signaling as periodic RS resources, which are associated with a periodicity of RS resource occurrences. As another example, a periodic CSI-RS resource identifier for each measurement can be fixed in the reporting configuration. Thus, a certain amount of latency and overhead can be involved in reconfiguring RS resources. One parameter for some RS resource configurations is a transmission configuration indicator (TCI) state. A TCI state includes parameters that can be used to derive spatial or other characteristics of a beam. For example, a CSI-RS configured with a given TCI state can be transmitted or measured using a beam defined by the given TCI state. A TCI state can indicate a quasi co-location (QCL) parameter and a source RS for the QCL parameter. The QCL parameter can indicate a set of properties (e.g., spatial transmission parameters, Doppler parameters, delay parameters, etc.) to be derived from the source RS. A UE can use the set of properties derived from the source RS to transmit or receive a signal configured with the TCI state. For example, a UE can use a beam (e.g., a spatial filter or other parameters) derived from a source RS of a TCI state of an RS resource (e.g., a CSI-RS resource, an SSB resource) to measure the RS resource. A TCI state for a periodic RS resource can be semi-statically configured (e.g., via RRC signaling) for the periodic RS resource. Thus, in some deployments, a TCI state for a periodic RS resource (such as a periodic CSI-RS, which can include a channel measurement resource or an interference measurement resource for a CSI report) can only be changed via RRC signaling.
[0009] A UE can utilize beamforming to communicate with other wireless communication devices such as other UEs or network nodes. Beamforming can be particularly beneficial in higher frequency ranges, such as frequency range 2 (defined elsewhere herein), to counteract increased attenuation in these higher frequency ranges. A beam used by a UE to transmit or receive communications can be referred to as an active beam or a serving beam. “Active beam” can be used interchangeably with “serving beam” herein, although “active beam” can also refer to a non-serving beam.
[0010] Beam quality, which can be quantified by a transmitted reference signal received power (RSRP) or a signal to interference plus noise ratio (SINR) on a beam, can vary over time due to blockage, movement, rotation, or interference. These changes can occur at any time and have potentially rapid changes. For example, in the case of blockage, a beam can experience a 10 dB drop in RSRP in a 100 millisecond (ms) window, and in the case of a burst of interference, a similar drop in SINR can be experienced.
[0011] As a UE changes location or orientation, its serving beam may change periodically. If significant changes in serving beam quality can be detected and reported promptly, network nodes can trigger beam management (by sending beam reports or CSI reports) to update beam information or CSI before the serving beam completely fails (i.e., before a beam failure occurs). If the serving beam completely fails, a new beam needs to be identified and established with a higher latency than the serving beam update. One way to achieve early detection of beam quality changes is to configure periodic reporting of serving beam quality with a sufficiently short measurement and / or reporting period (such as 5ms or 10ms). As the UE's serving beam changes, the previously configured CSI reporting configuration for the UE can be linked to a periodic RS resource associated with a TCI state that is no longer accurate for the UE's serving beam. Reporting information (e.g., beam reports) for this outdated periodic RS resource may not provide information about the performance of the serving beam. However, dynamic updates to the TCI state for periodic RS resources (such as via downlink control information or media access control signaling) to match the updated serving beam's TCI state may not be supported. Even if supported, dynamic updates may be difficult to implement because a given periodic CSI-RS resource (or CSI-RS) may be shared by multiple UEs (e.g., to save overhead). If the periodic CSI-RS resource is shared by multiple UEs, dynamically updating the TCI state may be impractical because the TCI state matching the serving beam of one UE may not match the serving beam of another UE. Therefore, in such deployments, it may be difficult to dynamically change the TCI for individual UEs. Due to all of these factors, beam reports for proactive updates of serving (active) beams may be associated with latency due to semi-static reconfiguration, significant overhead due to a large number of configured RS resources, or inaccurate or outdated beam reports due to outdated TCI states of RS resources. For example, if a semi-static approach is used to update the TCI state, the periodic CSI-RS resource identifier measured in the reporting configuration may have to be updated via RRC signaling to have a TCI state that matches the configuration of the indicated TCI state, since the indicated TCI state changes for the UE.
[0012] This disclosure relates generally to beam reporting. Some aspects more specifically relate to transmitting multiple RS reports (such as CSI-RS or SSB-based beam reporting) for an active serving beam of a UE. For example, the UE may be configured with a first TCI state for a first periodic RS resource and a second TCI state for a second periodic RS resource. The UE may also have an active serving beam. The UE may transmit a first RS report associated with the active serving beam, wherein the first RS report is based on the first periodic RS resource and the first TCI state. The UE may transmit a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and the second TCI state. In some aspects, the UE may switch the active serving beam between the first RS report and the second RS report, such that the active serving beam switches from using the first TCI state to using the second TCI state. Thus, as the active serving beam changes, the UE can use different periodic RS resources to perform reporting for the active serving beam. In some respects, the UE can perform the report without receiving signaling to update which periodic RS resource is used for reporting or to update the TCI state of a given periodic RS resource. Therefore, the UE can implement a “floating reference signal identifier” that changes as the UE’s serving beam (and TCI state) changes without requiring RRC reconfiguration of the UE’s reporting configuration or resource configuration.
[0013] Various aspects of this disclosure can be used to achieve one or more of the following potential advantages. In some aspects, by using different periodic RS resources to perform reporting for the active serving beam as it changes, the UE reduces signaling overhead and achieves faster handover of the active serving beam. Furthermore, the UE reduces the impact on beam measurements of other UEs by avoiding dynamic reconfiguration of periodic RS resources. Moreover, by performing reporting without receiving signaling to update the periodic RS resources or TCI status for reporting, the UE achieves autonomous beam handover and reporting with reduced overhead compared to explicit signaling.
[0014] In some aspects, a method of wireless communication performed by a UE includes: receiving a configuration indicating a first TCI state for a first periodic RS resource and a second TCI state for a second periodic RS resource; transmitting a first RS report associated with an active serving beam of the UE, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and transmitting a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0015] In some aspects, a wireless communication method performed by a UE includes: receiving a signal including a demodulation reference signal (DMRS); and transmitting a report jointly encoded to indicate at least two parameters in association with Hybrid Automatic Repeat Request (HARQ) feedback, the at least two parameters including at least two of the following: an RSRP variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS and indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0016] In some aspects, an apparatus for wireless communication at a UE includes: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being individually or collectively configured to cause the UE to: receive a configuration indicating a first TCI state for a first periodic RS resource and a second TCI state for a second periodic RS resource; transmit a first RS report associated with the UE's active serving beam, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and transmit a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0017] In some aspects, an apparatus for wireless communication at a UE includes: one or more memories; and one or more processors coupled to the one or more memories, the one or more processors being individually or jointly configured to cause the UE to: receive a signal including a DMRS; and transmit, in association with HARQ feedback, a report jointly encoded to indicate at least two parameters, the at least two parameters including at least two of the following: an RSRP variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS and indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0018] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: receive a configuration indicating a first TCI state for a first periodic RS resource and a second TCI state for a second periodic RS resource; transmit a first RS report associated with the UE's active serving beam, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and transmit a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0019] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: receive a signal including a DMRS; and, in association with HARQ feedback, transmit a report jointly encoded to indicate at least two parameters, including at least two of the following: an RSRP variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS and indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0020] In some aspects, an apparatus for wireless communication includes: means for receiving a configuration indicating a first TCI state for a first periodic RS resource and a second TCI state for a second periodic RS resource; means for transmitting a first RS report associated with an active serving beam of the UE, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and means for transmitting a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0021] In some aspects, an apparatus for wireless communication includes: a component for receiving a signal including a DMRS; and a component for transmitting, in association with HARQ feedback, a report jointly encoded to indicate at least two parameters, the at least two parameters including at least two of the following: an RSRP variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS and indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0022] In some aspects, a method of wireless communication performed by a network node includes: transmitting a configuration indicating a first Transmit Configuration Indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource; receiving a first RS report associated with an active serving beam of the UE, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and receiving a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0023] In some aspects, a method of wireless communication performed by a network node includes: transmitting a signal including a demodulation reference signal (DMRS); and receiving, in association with a hybrid automatic repeat request (HARQ) feedback, a report jointly encoded to indicate at least two parameters, the at least two parameters including at least two of the following: a reference signal received power (RSRP) variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS and indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0024] In some aspects, an apparatus for wireless communication at a network node includes: one or more memories; and one or more processors coupled to the one or more memories and configured to cause the network node to: transmit a configuration indicating a first Transmit Configuration Indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource; receive a first RS report associated with an active serving beam of the UE, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and receive a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0025] In some aspects, an apparatus for wireless communication at a network node includes: one or more memories; and one or more processors coupled to the one or more memories and configured to cause the network node to: transmit a signal including a demodulation reference signal (DMRS); and receive, in association with Hybrid Automatic Repeat Request (HARQ) feedback, a report jointly encoded to indicate at least two parameters, the at least two parameters including at least two of the following: a reference signal received power (RSRP) variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS and indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0026] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a network node, cause the network node to: transmit a configuration indicating a first Transmit Configuration Indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource; receive a first RS report associated with an active serving beam of the UE, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and receive a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0027] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a network node, cause the network node to: transmit a signal including a demodulation reference signal (DMRS); and receive, in association with Hybrid Automatic Repeat Request (HARQ) feedback, a report jointly encoded to indicate at least two parameters, including at least two of the following: a reference signal received power (RSRP) variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS and indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0028] In some aspects, an apparatus for wireless communication includes: means for transmitting a configuration indicating a first transmit configuration indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource; means for receiving a first RS report associated with an active serving beam of the UE, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and means for receiving a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0029] In some aspects, an apparatus for wireless communication includes: components for transmitting a signal including a demodulation reference signal (DMRS); and components for receiving, in association with Hybrid Automatic Repeat Request (HARQ) feedback, a report jointly encoded to indicate at least two parameters, the at least two parameters including at least two of the following: a reference signal received power (RSRP) variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS and indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0030] The general terms include, as fully described with reference to the accompanying drawings and illustrated by reference to the drawings, methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication equipment, network entities, network nodes and / or processing systems.
[0031] The features and technical advantages of the examples according to this disclosure have been summarized rather extensively above in order to better understand the detailed description below. Additional features and advantages will be described below. The disclosed concepts and specific examples can be readily utilized as the basis for modifying or designing other structures for achieving the same purpose of this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein (both their organization and manner of operation) and the associated advantages will be better understood from the following description when considered in conjunction with the accompanying drawings. Each figure in the drawings is provided for illustrative and descriptive purposes and not as a limitation of the definitions in the claims. Attached Figure Description
[0032] Figure 1 This is a diagram illustrating an example of a wireless network.
[0033] Figure 2 This is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network.
[0034] Figure 3 This is a diagram illustrating an example decomposed base station architecture according to this disclosure.
[0035] Figure 4 This is a diagram illustrating an example of the channel state information reference signal (CSI-RS) beam management process according to this disclosure.
[0036] Figure 5 This is a diagram illustrating an example of the transmission of a reference signal (RS) report for an active service beam according to this disclosure.
[0037] Figure 6 This is a diagram illustrating an example of signaling associated with a floating measurement RS report according to this disclosure.
[0038] Figure 7 This is a diagram illustrating examples of reports based on parameters of a demodulated reference signal according to this disclosure.
[0039] Figure 8 This is a flowchart of an example method for wireless communication.
[0040] Figure 9 This is a flowchart of an example method for wireless communication.
[0041] Figure 10This is a diagram of an example device for wireless communication according to the present disclosure.
[0042] Figure 11 This is a diagram illustrating an example of a hardware implementation of a device for employing a processing system according to the present disclosure.
[0043] Figure 12 This is a flowchart of an example method for wireless communication.
[0044] Figure 13 This is a flowchart of an example method for wireless communication.
[0045] Figure 14 This is a diagram of an example device for wireless communication according to the present disclosure.
[0046] Figure 15 This is a diagram illustrating an example of a hardware implementation of a device for employing a processing system according to the present disclosure.
[0047] Figure 16 This is a diagram illustrating an example of identifying CSI-RS resources based on the indicated Transmission Configuration Indicator (TCI) status.
[0048] Figure 17 and Figure 18 This is a diagram illustrating an example of identifying multiple measured CSI-RS resources based on one or more indicated TCI states. Detailed Implementation
[0049] The detailed description that follows, taken in conjunction with the accompanying drawings, is intended as a description of various configurations and not as a representation of a configuration in which the concepts described herein can be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of the various concepts. However, it will be apparent to those skilled in the art that these concepts can be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.
[0050] Various apparatuses and methods will now be used to present several aspects of a telecommunications system. These apparatuses and methods will be described in detail below and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, “elements”). These elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the system as a whole.
[0051] By way of example, an element, or any part of an element, or any combination of elements, may be implemented using a "processing system" comprising one or more processors. Examples of processors include microprocessors, microcontrollers, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic units, discrete hardware circuits, and other suitable hardware configured to perform the various functionalities described throughout this disclosure. One or more processors in the processing system can execute software. Software should be interpreted broadly as instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description languages, or other names.
[0052] Therefore, in one or more example embodiments, the described functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or code on a computer-readable medium. A computer-readable medium includes a computer storage medium. The storage medium may be any available medium accessible to a computer. By way of example, and not limitation, such computer-readable media may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), compact disc ROM (CD-ROM), or other optical disc storage devices, magnetic disk storage devices, or other magnetic storage devices, combinations of computer-readable media of the types described above, or any other medium that can be used to store computer-executable code in the form of computer-accessible instructions or data structures.
[0053] Although terms generally associated with 5G or New Radio (NR) Radio Access Technology (RAT) may be used herein to describe aspects, aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT and / or 5G and later (e.g., 6G) RATs.
[0054] Figure 1This is an illustration of an example of a wireless network 100. Wireless network 100 can be a 5G (e.g., NR) network or a 4G (e.g., LTE) network, or may include elements of a 5G (e.g., NR) network or elements of a 4G (e.g., LTE) network, etc. Wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), or other entities. Network node 110 is an example of a network node communicating with UE 120. As shown, network node 110 may include one or more network nodes. For example, network node 110 can be an aggregated network node, meaning that the aggregated network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). As another example, network node 110 can be a decomposed network node (sometimes referred to as a decomposed base station), meaning that network node 110 is configured to utilize a protocol stack that is physically or logically distributed among two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).
[0055] In some examples, network node 110 is or includes network nodes such as RU that communicate with UE 120 via a radio access link. In some examples, network node 110 is or includes network nodes such as DU that communicate with other network nodes 110 via a fronthaul or midhaul link. In some examples, network node 110 is or includes network nodes such as CU that communicate with other network nodes 110 via a midhaul link or with the core network via a backhaul link. In some examples, network node 110 (such as aggregated network node 110 or decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. For example, network node 110 may include NR base stations, LTE base stations, Node Bs, eNBs (e.g., in 4G), gNBs (e.g., in 5G), access points, Transmit / Receive Points (TRPs), DUs, RUs, CUs, network mobility elements, core network nodes, network elements, network equipment, RAN nodes, or combinations thereof. In some examples, network nodes 110 can interconnect with each other or with one or more other network nodes 110 in the wireless network 100 using any suitable transport network through various types of fronthaul interfaces, midhaul interfaces, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks).
[0056] In some examples, network node 110 may provide communication coverage for a specific geographic area. In the 3rd Generation Partnership Project (3GPP), depending on the context in which the term is used, the term "cell" may refer to the coverage area of network node 110 or a network node subsystem serving that coverage area. Network node 110 may provide communication coverage for macrocells, picocells, femtocells, or another type of cell. A macrocell may cover a relatively large geographic area (e.g., with a radius of several kilometers) and may allow unrestricted access by UE 120 with a service subscription. A picocell may cover a relatively small geographic area and may allow unrestricted access by UE 120 with a service subscription. A femtocell may cover a relatively small geographic area (e.g., a residential area) and may allow restricted access by UE 120 associated with that femtocell (e.g., UE 120 in a Closed Subscriber Group (CSG)). Network node 110 used for macrocells may be referred to as a macro network node. Network node 110 used for picocells may be referred to as a pico network node. The network node 110 used for femtocells can be referred to as a femtocell network node or a home network node. Figure 1 In the example shown, network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. Network nodes may support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographical area of the cells may move depending on the location of the mobile network node 110 (e.g., a mobile network node).
[0057] In some aspects, the term "base station" or "network node" may refer to an aggregated base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, "base station" or "network node" may refer to a CU, DU, RU, a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with network node 110). In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of multiple different devices (which may be located in the same geographical location or different geographical locations) may be configured to perform at least a portion of a function, or to repeatedly perform at least a portion of that function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions can be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one base station function rather than another. In this way, a single device can include more than one base station.
[0058] Wireless network 100 may include one or more relay stations. A relay station is a network node that receives data transmissions from an upstream node (e.g., network node 110 or UE 120) and transmits data to a downstream node (e.g., UE 120 or network node 110). A relay station may be a UE 120 that can relay transmissions to other UE 120s. Figure 1 In the example shown, network node 110d (e.g., a relay network node) can communicate with network node 110a (e.g., a macro network node) and UE 120d to facilitate communication between network node 110a and UE 120d. The network node 110 for relay communication may be referred to as a relay station, relay base station, relay network node, relay node, or relay, etc.
[0059] The wireless network 100 can be a heterogeneous network, comprising different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, or relay network nodes. These different types of network nodes 110 may have different transmit power levels, different coverage areas, or different effects on interference in the wireless network 100. For example, macro network nodes may have high transmit power levels (e.g., 5 watts to 40 watts), while pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (e.g., 0.1 watts to 2 watts).
[0060] Network controller 130 may be coupled to or communicate with network node set 110, and may provide coordination and control for these network nodes 110. Network controller 130 may communicate with network nodes 110 via a backhaul or midhaul link. Network nodes 110 may also communicate directly with each other, or indirectly via a wireless or wired backhaul link. In some aspects, network controller 130 may be a CU or core network device, or may include a CU or core network device.
[0061] UE 120 may be distributed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a terminal, a mobile station, or a subscriber unit. UE 120 may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or smart bracelet)), an entertainment device (e.g., a music device, a video device, or a satellite radio), an in-vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a GPS device, a UE function of a network node, or any other suitable device configured to communicate via wireless or wired media.
[0062] Some UEs 120 may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC UEs or eMTC UEs may include, for example, robots, unmanned aerial vehicles, remote devices, sensors, meters, monitors, or location markers that can communicate with network nodes, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices or may be implemented as NB-IoT (Narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. UEs 120 may be included within a housing that houses the components of the UE 120, such as processor components or memory components. In some examples, the processor components and memory components may be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, or electrically coupled.
[0063] Generally, any number of wireless networks 100 can be deployed in a given geographical area. Each wireless network 100 can support a specific RAT and can operate on one or more frequencies. A RAT can also be referred to as a radio technology or air interface. A frequency can also be referred to as a carrier or frequency channel. Each frequency in a given geographical area can support a single RAT to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.
[0064] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using network node 110 as an intermediary for communication with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, or other operations described elsewhere herein as being performed by network node 110.
[0065] Devices in Wireless Network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, or channels by frequency or wavelength. For example, devices in Wireless Network 100 can communicate using one or more operating bands. In 5G NR, two initial operating bands have been designated as frequency ranges FR1 (410MHz to 7.125GHz) and FR2 (24.25GHz to 52.6GHz). Although a portion of FR1 is greater than 6GHz, in various documents and articles, FR1 is often (interchangeably) referred to as the “sub-6GHz” band. Similar naming issues sometimes occur with FR2, which is often (interchangeably) referred to in documents and articles as the “millimeter wave” band, although this is different from the Extremely High Frequency (EHF) band (30GHz to 300GHz) designated as a “millimeter wave” band by the International Telecommunication Union (ITU).
[0066] The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR studies have designated the operating bands for these mid-band frequencies as the frequency range designation FR3 (7.125 GHz to 24.25 GHz). Bands falling within FR3 can inherit FR1 or FR2 characteristics, thus effectively extending the features of FR1 or FR2 into the mid-band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating frequency bands have been designated as the frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.
[0067] In light of these examples, unless otherwise specifically stated, the term "below 6 GHz" as used herein can broadly refer to frequencies less than 6 GHz, frequencies within FR1, or frequencies that may include intermediate frequency bands. Furthermore, unless otherwise specifically stated, the term "millimeter wave" as used herein can broadly refer to frequencies that may include intermediate frequency bands, frequencies within FR2, FR4, FR4-a, FR4-1, or FR5, or frequencies within the EHF band. It is conceivable that the frequencies included in these operating frequency bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, or FR5) can be modified, and the techniques described herein are applicable to those modified frequency ranges.
[0068] In some aspects, UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may receive configurations indicating a first transmit configuration indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource; transmit a first RS report associated with the UE's active serving beam, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and transmit a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration. As described in more detail elsewhere herein, the communication manager 140 may receive a signal including a demodulation reference signal (DMRS); and transmit a report jointly encoded to indicate at least two parameters in association with Hybrid Automatic Repeat Request (HARQ) feedback, the at least two parameters including at least two of the following: a reference signal received power (RSRP) variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.
[0069] As indicated above, Figure 1 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 1 The examples described are different.
[0070] Figure 2 This is a diagram illustrating example 200 of communication between network node 110 and UE 120 in wireless network 100. Network node 110 may be equipped with antenna sets 234a to 234t, such as... T One antenna ( T ≥1). UE 120 may be equipped with antenna sets 252a to 252r, such as R One antenna ( R ≥1). Network node 110 of Example 200 includes one or more radio frequency components, such as antenna 234 and modem 232. In some examples, network node 110 may include an interface, communication components, or another component that facilitates communication with UE 120 or another network node. Some network node 110 may not include radio frequency components that facilitate direct communication with UE 120, such as one or more CUs or one or more DUs.
[0071] At network node 110, transmitting processor 220 can receive data from data source 212 intended for use by UE 120 (or UE set 120). Transmitting processor 220 can use one or more Channel Quality Indicators (CQIs) received from UE 120 to select one or more modulation and decoding schemes (MCSs) for that UE 120. Network node 110 can use the MCS selected for UE 120 to process (e.g., encode and modulate) the data for UE 120 and can provide data symbols to UE 120. Transmitting processor 220 can process system information (e.g., semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, or upper-layer signaling) and provide overhead symbols and control symbols. Transmitting processor 220 can generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or DMRS) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., pre-decoding) on data symbols, control symbols, overhead symbols, or reference symbols (if applicable), and can direct to a corresponding set of modems 232 shown as modems 232a to 232t (e.g., T A set of output symbol streams (e.g., modems) is provided by a modem. T Each output symbol stream can be provided to a modulator component (shown as MOD) of modem 232. Each modem 232 can use a corresponding modulator component to process the corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modem 232 can also use a corresponding modulator component to process (e.g., convert to analog, amplify, filter, or upconvert) the output sample stream to obtain a downlink signal. Modems 232a to 232t can be connected via a corresponding set of antennas 234 (e.g., T Each antenna (shown as antennas 234a to 234t) is used to transmit a set of downlink signals (e.g., T (One downlink signal).
[0072] At UE 120, the set of antennas 252 (shown as antennas 252a to 252r) can receive downlink signals from network node 110 or other network nodes 110, and can transmit signals to the set of modems 254 (e.g., R Each modem (shown as modems 254a to 254r) provides a set of received signals (e.g., REach received signal may be provided to a demodulator component (shown as DEMOD) of modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, down-convert, or digitize) the received signal to obtain an input sample. Each modem 254 may use a demodulator component to further process the input sample (e.g., for OFDM) to obtain a received symbol. MIMO detector 256 may obtain the received symbols from modem 254, perform MIMO detection on the received symbols where applicable, and provide the detected symbols. Receive (RX) processor 258 may process (e.g., demodulate and decode) the detected symbols, provide the decoded data for UE 120 to data sink 260, and provide the decoded control information and system information to controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine RSRP parameters, Received Signal Strength Indicator (RSSI) parameters, Reference Signal Received Quality (RSRQ) parameters, or CQI parameters, etc. In some examples, one or more components of UE 120 may be included in housing 284.
[0073] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, for example, in a core network. Network controller 130 may communicate with network node 110 via communication unit 294.
[0074] One or more antennas (e.g., antennas 234a to 234t or antennas 252a to 252r) may include or be included in the following: one or more antenna panels, one or more antenna groups, one or more collections of antenna elements, or one or more antenna arrays, etc. Antenna panels, antenna groups, collections of antenna elements, or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), coplanar antenna element collections, non-coplanar antenna element collections, or coupled to one or more transmitting or receiving components (such as...). Figure 2 One or more antenna elements (one or more components).
[0075] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, or CQI). Transmit processor 264 can generate reference symbols for one or more reference signals. Symbols from transmit processor 264 may be pre-decoded by TX MIMO processor 266 where applicable, further processed by modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to network node 110. In some examples, modem 254 of UE 120 may include modulator and demodulator. In some examples, UE 120 includes a transceiver. The transceiver may include any combination of antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the processes described herein.
[0076] At network node 110, uplink signals from UE 120 or other UEs may be received by antenna 234, processed by modem 232 (e.g., demodulator component of modem 232, shown as DEMOD), detected by MIMO detector 236 where applicable, and further processed by receiver processor 238 to obtain decoded data and control information transmitted via UE 120. Receiver processor 238 may provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Network node 110 may include communication unit 244 and may communicate with network controller 130 via communication unit 244. Network node 110 may include scheduler 246 to schedule one or more UEs 120 for downlink or uplink communication. In some examples, modem 232 of network node 110 may include modulator and demodulator. In some examples, network node 110 includes transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the processes described herein.
[0077] The controller / processor 240 of network node 110, the controller / processor 280 of UE 120 and / or Figure 2Any other component may perform one or more techniques associated with floating reference signal reporting, as described in more detail elsewhere herein. For example, the controller / processor 240 of network node 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component that can execute or direct, for example Figure 8 Method 800 Figure 9 Method 900 Figure 12 Method 1200 Figure 13 The operation of method 1300 and / or other processes as described herein. Memory 242 and memory 282 may store data and program code for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly executed, or executed after compilation, transformation, and / or interpretation), these one or more instructions may cause the one or more processors, UE 120, and / or network node 110 to perform or direct, for example... Figure 8 Method 800 Figure 9 Method 900 Figure 12 Method 1200 Figure 13 Method 1300 and / or other procedures as described herein. In some examples, execution instructions may include run instructions, transform instructions, compile instructions and / or interpret instructions, etc.
[0078] In some aspects, UE 120 includes components for receiving a configuration indicating a first TCI state for a first periodic RS resource and a second TCI state for a second periodic RS resource; components for transmitting a first RS report associated with the UE's active serving beam, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and / or components for transmitting a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration. In some aspects, UE 120 includes components for receiving a signal including DMRS; and / or components for transmitting a report jointly encoded to indicate at least two parameters in association with HARQ feedback, the at least two parameters including at least two of the following: an RSRP variability parameter derived from DMRS, a decoding quality parameter derived from DMRS indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from DMRS. Components used by UE 120 to perform the operations described herein may include, for example, one or more of the following: communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.
[0079] In some respects, a single processor can perform all the functions described as being performed by that one or more processors. In other respects, the one or more processors can jointly perform a set of functions. For example, a first group(s) of the one or more processors can perform a first function described as being performed by that one or more processors, and a second group(s) of the one or more processors can perform a second function described as being performed by that one or more processors. The first group and the second group of processors can be the same group of processors or can be different groups of processors. The reference to "one or more processors" should be understood as referring to a combination of functions. Figure 2 Any one or more processors described. The reference to "one or more memories" should be understood to refer to any one or more memories of the corresponding device, such as those in conjunction with... Figure 2 The memory described. For example, a function described as being performed by one or more memories can be performed by the same subset of the one or more memories or by different subsets of the one or more memories.
[0080] Although Figure 2The boxes in the diagram are illustrated as different components, but the functions described above with respect to these boxes may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 may be performed by or under the control of controller / processor 280.
[0081] As indicated above, Figure 2 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 2 The examples described are different.
[0082] The deployment of communication systems such as 5G NR systems can be arranged in a variety of ways using various components or parts. In a 5G NR system or network, network nodes, network entities, network mobility elements, RAN nodes, core network nodes, network elements, base stations, or network equipment can be implemented in either a converged or decomposed architecture. For example, a base station (such as a Node B (NB), evolved NB (eNB), NR base station, 5G NB, access point (AP), TRP, or cell, etc.) or one or more units (or components) performing base station functionality can be implemented as a converged base station (also known as a standalone base station or monolithic base station) or a decomposed base station. A "network entity" or "network node" can refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or combinations thereof).
[0083] Aggregated base stations (e.g., aggregated network nodes) can be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or cell). Decomposed base stations (e.g., decomposed network nodes) can be configured to utilize a protocol stack that is physically or logically distributed across two or more cells (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, the CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other network nodes. DUs may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU can also be implemented as a virtual cell, such as a Virtual Central Unit (VCU), a Virtual Distributed Unit (VDU), or a Virtual Radio Unit (VRU), etc.
[0084] Base station type operation or network design can take into account the aggregation characteristics of base station functionality. For example, decomposed base stations can be utilized in IAB networks, Open Radio Access Networks (O-RAN (such as network configurations initiated by the O-RAN Alliance)), or Virtualized Radio Access Networks (vRAN, also known as Cloud Radio Access Networks (C-RAN)) to facilitate the scaling of communication systems by separating base station functionality into one or more units that can be deployed individually. Decomposed base stations can include functionality implemented across two or more units at various physical locations, as well as functionality virtually implemented for at least one unit, which enables flexibility in network design. Each unit of a decomposed base station can be configured for wired or wireless communication with at least one other unit of the decomposed base station.
[0085] Figure 3 This is an illustration of an example disaggregated base station architecture 300 according to the present disclosure. The disaggregated base station architecture 300 may include a CU 310, which may communicate directly with the core network 320 via a backhaul link, or indirectly with the core network 320 via one or more disaggregated control units (such as near-RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a Service Management and Orchestration (SMO) framework 305, or both). The CU 310 may communicate with one or more DUs 330 via a corresponding midhaul link (such as via an F1 interface). Each DU 330 may communicate with one or more RUs 340 via a corresponding fronthaul link. Each RU 340 may communicate with one or more UEs 120 via a corresponding radio frequency (RF) access link. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.
[0086] Each unit in the clusters (including CU 310, DU 330, RU 340), as well as the near-RT RIC 325, non-RT RIC 315, and SMO frame 305, may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via wired or wireless transmission media. Each unit in the cluster, or an associated processor or controller providing instructions to one or more communication interfaces of the corresponding unit, may be configured to communicate with one or more units in other clusters via transmission media. In some examples, each unit in the cluster may include a wired interface and a wireless interface configured to receive signals or transmit signals to one or more units in other clusters via a wired transmission media, and the wireless interface may include a receiver, transmitter, or transceiver (such as an RF transceiver) configured to receive signals or transmit signals to one or more units in other clusters via a wireless transmission media, or both.
[0087] In some aspects, the CU 310 can host one or more higher-level control functions. Such control functions may include RRC functions, Packet Data Convergence Protocol (PDCP) functions, or Service Data Adaptation Protocol (SDAP) functions, etc. Each control function can be implemented using an interface configured to signal to other control functions hosted by the CU 310. The CU 310 can be configured to handle user plane functions (e.g., Central Unit-User Plane (CU-UP) functions), control plane functions (e.g., Central Unit-Control Plane (CU-CP) functions), or combinations thereof. In some implementations, the CU 310 can be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP units can communicate bidirectionally with the CU-CP units via an interface such as an E1 interface. The CU 310 can be implemented to communicate with the DU330 for network control and signaling purposes, as needed.
[0088] Each DU 330 may correspond to a logical unit comprising one or more base station functions for controlling the operation of one or more RU 340s. In some aspects, the DU 330 may host one or more of the Radio Link Control (RLC) layer, Medium Access Control (MAC) layer, and one or more high physical (PHY) layers, at least in part, according to functional splits (such as those defined by 3GPP). In some aspects, the one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, and modulation and demodulation, etc. In some aspects, the DU 330 may also host one or more low PHY layers, such as those implemented by one or more modules for Fast Fourier Transform (FFT), Inverse FFT (iFFT), Digital Beamforming, or Physical Random Access Channel (PRACH) extraction and filtering, etc. Each layer (which may also be referred to as a module) may be implemented using an interface configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.
[0089] Each RU 340 can implement low-level functionality. In some deployments, an RU 340 controlled by a DU 330 can correspond to a logical node that hosts RF processing functions or low-PHY layer functions, such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, based on function splitting (e.g., function splitting defined by 3GPP) (such as low-level function splitting). In such architectures, each RU 340 can be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some specific implementations, the real-time and non-real-time aspects of control plane and user plane communications with the RU 340 can be controlled by the corresponding DU 330. In some scenarios, this configuration allows each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
[0090] The SMO framework 305 can be configured to support RAN deployment and provisioning of both non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO framework 305 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which can be managed via operation and maintenance interfaces such as the O1 interface. For virtualized network elements, the SMO framework 305 can be configured to interact with cloud computing platforms such as the Open Cloud (O-Cloud) platform 390 to perform network element lifecycle management (such as instantiating virtualized network elements) via cloud computing platform interfaces such as the O2 interface. Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RTTRIC 325. In some specific implementations, the SMO framework 305 may communicate with 4G RAN hardware aspects such as the Open eNB (O-eNB) 311 via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 may also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.
[0091] The non-RT RIC 315 can be configured to include logical functions that enable non-real-time control and optimization of RAN elements and resources, including artificial intelligence / machine learning (AI / ML) workflows for model training and updates, or policy-based guidance for applications / features in the near-RT RIC 325. The non-RT RIC 315 can be coupled to or communicate with the near-RT RIC 325, such as via an A1 interface. The near-RT RIC 325 can be configured to include logical functions that enable near real-time control and optimization of RAN elements and resources via an interface, such as an E2 interface, through data collection and actions, connecting one or more CU 310s, one or more DU 330s, or both, and O-eNBs to the near-RT RIC 325.
[0092] In some implementations, to generate AI / ML models to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. This information can be utilized by the near-RT RIC 325 and may be received from non-network data sources or network functions at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns in performance and employ AI / ML models to perform corrective actions via the SMO framework 305 (such as reconfiguration via the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).
[0093] As indicated above, Figure 3 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 3 The examples described are different.
[0094] Figure 4 These are illustrations of examples 400, 410, and 420 illustrating the CSI-RS beam management process according to this disclosure. Figure 4 As shown, Examples 400, 410, and 420 include UE 120 communicating with network node 110 in a wireless network (e.g., wireless network 100). However, Figure 4 The device shown is provided as an example, and the wireless network can support communication and beam management between other devices (e.g., between UE 120 and network node 110 or TRP, between mobile terminal node and control node, between IAB child node and IAB parent node, and / or between scheduled node and scheduling node). In some aspects, UE 120 and network node 110 may be in a connected state (e.g., RRC connected state).
[0095] likeFigure 4 As shown, Example 400 may include a network node 110 (e.g., one or more network node devices such as RU, DU, and / or CU) communicating with UE 120 to perform beam management using CSI-RS. Example 400 depicts a first beam management procedure (e.g., P1 CSI-RS beam management). The first beam management procedure may be referred to as a beam selection procedure, an initial beam acquisition procedure, a beam scanning procedure, a cell search procedure, and / or a beam search procedure. Figure 4 As shown in Example 400, CSI-RS can be configured to be transmitted from network node 110 to UE 120. CSI-RS can be configured to be periodic (e.g., using RRC signaling), semi-persistent (e.g., using MAC control element (MAC-CE) signaling), and / or aperiodic (e.g., using downlink control information (DCI)).
[0096] The first beam management process may include network node 110 performing beam scanning on multiple transmit (Tx) beams. Network node 110 may use each transmit beam for beam management to transmit CSI-RS. To enable UE 120 to perform receive (Rx) beam scanning, the network node may use the transmit beams to transmit (e.g., with repetition) each CSI-RS multiple times within the same RS resource set, allowing UE 120 to scan the receive beam in several transmit instances. For example, if network node 110 has a set of N One transmit beam and UE 120 has a set M If there is a receiving beam, then it can be N CSI-RS is transmitted on each of the 100 transmit beams. M This allows UE 120 to receive CSI-RS for each transmitted beam. M This is an example. In other words, for each transmit beam of network node 110, UE 120 can perform a beam scan of the receive beam of UE 120. Therefore, the first beam management procedure enables UE 120 to measure CSI-RS on different transmit beams using different receive beams to support the selection of beam pairs for network node 110 transmit beam / UE 120 receive beam. UE 120 can report the measurements to network node 110 so that network node 110 can select one or more beam pairs for communication between network node 110 and UE 120. Although Example 400 has been described in conjunction with CSI-RS, the first beam management procedure can also be performed using SSB or other RS in a similar manner as described above.
[0097] like Figure 4As shown, Example 410 may include network node 110 and UE 120 communicating to perform beam management using CSI-RS. Example 410 depicts a second beam management procedure (e.g., P2 CSI-RS beam management). This second beam management procedure may be referred to as a beam refinement procedure, a network node beam refinement procedure, a TRP beam refinement procedure, and / or a transmit beam refinement procedure. Figure 4 As shown in Example 410, CSI-RS can be configured to be transmitted from network node 110 to UE 120. A second beam management procedure may include network node 110 performing beam scanning on one or more transmit beams. These one or more transmit beams may be a subset of all transmit beams associated with network node 110 (e.g., determined at least in part based on measurements reported by UE 120 in conjunction with the first beam management procedure). Network node 110 may transmit CSI-RS using each of the one or more transmit beams used for beam management. UE 120 may measure each CSI-RS using a single (e.g., identical) receive beam (e.g., determined at least in part based on measurements performed in conjunction with the first beam management procedure). This second beam management procedure enables network node 110 to select the optimal transmit beam at least in part based on (e.g., measurements taken by UE 120 using a single receive beam) the measurements of CSI-RS reported by UE 120.
[0098] like Figure 4 As shown, Example 420 depicts a third beam management process (e.g., P3 CSI-RS beam management). This third beam management process may be referred to as a beam refinement process, a UE beam refinement process, and / or a receive beam refinement process. Figure 4As shown in Example 420, one or more CSI-RS can be configured to be transmitted from network node 110 to UE 120. The CSI-RS can be configured to be non-periodic (e.g., using DCI). The third beam management procedure may include network node 110 transmitting one or more CSI-RS using a single transmit beam (e.g., determined at least in part based on measurements reported by UE 120 in conjunction with the first beam management procedure and / or the second beam management procedure). To enable UE 120 to perform receive beam scanning, the network node may transmit (e.g., with repetition) CSI-RS multiple times within the same RS resource set using the transmit beam, allowing UE 120 to scan one or more receive beams in several transmission instances. The one or more receive beams may be a subset of all receive beams associated with UE 120 (e.g., determined at least in part based on measurements performed in conjunction with the first beam management procedure and / or the second beam management procedure). This third beam management process enables network node 110 and / or UE 120 to select the optimal receive beam based at least in part on reported measurements received from UE 120 (e.g., reported measurements of the CSI-RS of the transmit beam using one or more receive beams).
[0099] As mentioned, UE 120 may report information about the measured RS to network node 110 to facilitate beamforming operations. This report may include, for example, a CSI report configured by a CSI report configuration indicating one or more resources (such as via the parameter CSI-ResourceConfigId) for channel measurements. The one or more resources for channel measurements may be indicated by the parameter nzp-CSI-RS-ResourceSetList of the CSI resource configuration indicated by CSI-ResourceConfigId, and may include CSI-RS resources or SSB resources. The parameter nzp-CSI-RS-ResourceSetList may indicate one or more resources for channel measurements, such as via the parameter NZP-CSI-RS-ResourceId. One or more of these configurations may also indicate the TCI state for measuring a given CSI-RS resource. The above configurations may be communicated via semi-static (e.g., RRC) signaling. In some aspects described herein, UE 120 may implicitly determine the resources (e.g., resource identifiers) for channel measurements based on the TCI state indicated for the active serving beam of UE 120.
[0100] As also mentioned, the active serving beam of UE 120 may change from time to time, such as based at least in part on dynamic signaling received from network node 110 or autonomous operation of UE 120. If the active serving beam of UE 120 changes from a first beam to a second beam, the CSI resources previously configured for channel measurements may have a TCI state that is no longer suitable for determining the performance of the second beam. Some techniques described herein provide for the transmission of beam reports (sometimes referred to as RS reports) regarding the RS corresponding to the current active serving beam of UE 120, even if the active serving beam changes in different reporting periods. For example, instead of measuring CSI-RS resources configured with a fixed RS identifier in the CSI report configuration, the resource identifier for the measurement can be implicitly determined based on the active serving beam of UE 120 (e.g., the TCI state indicated by the active serving beam).
[0101] As indicated above, Figure 4 This is provided as an example of a beam management process. Other examples of beam management processes can be found in relation to [the relevant documentation / information]. Figure 5 The examples described are different.
[0102] Figure 4 This is a diagram illustrating an example 500 of transmitting RS reports for an active service beam according to this disclosure. Example 500 shows multiple periodic RS resources 510 (RS-1 to RS-10). N ,in N (Positive integer). Periodic RS resource 510 can be configured for any form of RS, such as CSI-RS, SSB, beam fault detection RS, radio link monitoring RS, or another form of RS. Several reporting periods 520 are also shown, including the first... X Period, First Y Period and the Z Periodicity. In some aspects, the periodicity of the reporting period can support dynamic beam switching at the UE (e.g., UE 120), such as 5ms periodicity, 10ms periodicity, etc. As shown in the figure, the UE can send an RS report 530 (e.g., a beam report) in each reporting period 520. The number of periodic RS resources 510 can be configured via semi-static (e.g., RRC) signaling.
[0103] A network node (e.g., network node 110) can transmit an RS corresponding to each of a plurality of periodic RS resources 510. For example, each periodic RS resource 510 can be configured with a TCI state indicating one or more parameters for transmitting the RS using a beam on the periodic RS resource 510. In some aspects, the TCI state can be configured to support extended transmission across periodic RS resources 510, such as for... Figure 5The described beam refinement.
[0104] The UE can switch from using the first serving beam to using the second serving beam. For example, the UE can switch from using the second serving beam to using the third serving beam. X In cycle 520, the first serving beam corresponding to the TCI state of RS-1 (e.g., defined by the TCI state of RS-1, complementary to the TCI state of RS-1) is switched to the first serving beam in cycle 520. Y In cycle 520, the second serving beam corresponding to the TCI state of RS-2 is used. As shown by reference numeral 540, the... X The first RS report 530 in the cycle can be associated with RS-1, and as shown by reference numeral 550 in the figure, the... Y A second RS report 530 within a period can be associated with RS-2. For example, the UE may report RS-1 when served by a first serving beam corresponding to the TCI state of RS-1, and may report RS-2 when served by a second serving beam corresponding to the TCI state of RS-2. Reporting of any periodic RS resource 510 corresponding to the UE's active serving beam can be referred to as reporting a floating measurement RS. Floating measurement RS may not require dynamic TCI updates to the periodic RS resource 510 to facilitate reporting on different serving beams of the UE, thereby reducing overhead and latency.
[0105] As indicated above, Figure 5 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 6 The examples described are different.
[0106] Figure 16 This is a diagram illustrating example 600 of signaling associated with a floating measurement RS report according to this disclosure. Example 600 includes UE 120 and network node 110.
[0107] As shown by reference numeral 610 in the attached figure, network node 110 can send configuration information, and UE 120 can receive the configuration information. The configuration information may include configurations such as one or more RRC Information Elements (IEs). This configuration may indicate a first TCI state for a first periodic RS resource (e.g., periodic RS resource 510) and a second TCI state for a second periodic RS resource (e.g., periodic RS resource 510). Each TCI state may indicate QCL parameters and a source RS. Based on the QCL parameters, parameters (e.g., spatial parameters, Doppler parameters, delay parameters, etc.) of the periodic RS resource configured with the TCI state of the source RS are derived from the source RS. For example, the QCL parameters may indicate which parameters to derive from the source RS (e.g., QCL Type A, Type B, Type C, or Type D).
[0108] In some aspects, a first source RS can be configured as a source RS for another signal or channel via a first TCI state. The first source RS itself can be configured with a second TCI state indicating a second source RS from which parameters for the first source RS are derived. Therefore, parameters of the first source RS can be derived from the second source RS, and parameters of another signal or channel can then be derived from the source RS. In this example, the second source RS can be referred to as the root source RS of the other signal or channel. For example, consider a periodic RS resource configured with a first TCI state indicating from which parameters for the periodic RS resource are derived, wherein the first source RS is configured with a second TCI state indicating from which parameters for the first source RS are derived. In this example, parameters for the periodic RS resource are derived from the first source RS, and parameters for the first source RS are derived from the second source RS. In this scenario, the second source RS can be referred to as the root QCL source RS of the periodic RS resource. In some aspects, the source RS can be referred to as a QCL source or a QCL source RS.
[0109] Periodic RS resources can be associated with identifiers. In some examples, when sending an RS report about a corresponding periodic RS resource, UE 120 may include the identifier of the corresponding periodic RS resource in the RS report. For example, the identifier may identify the RS of the measurement associated with the RS report (sometimes referred to as the floating measurement RS). In some aspects, the identifier may be linked to the TCI state indicated by the UE's serving beam. For example, the identifier may be the identifier of an RS indicated by the indicated TCI state as a QCL source RS, an RS indicated by the indicated TCI state as a root QCL source RS, etc. That is, the identifier may be linked to the indicated TCI state because the identifier is derived from the RS indicated by the TCI state, or otherwise associated with the TCI state. The serving beam may use the indicated TCI state, and the indicated TCI state may be signaled to UE 120 or determined by UE 120. Therefore, the active serving beam may be associated with an identifier.
[0110] As an example of an identifier associated with the active serving beam (of the measured RS), consider a single periodic CSI-RS configured as a Channel Measurement Resource (CMR), and assume that a single TCI state is indicated only for the serving beam at a given time. In this example, the identifier (i.e., the identifier of the measured CSI-RS resource) could be an identifier whose configured TCI state (i.e., whose RS resource configuration is configured with a TCI state) matches the TCI state indicated by the active serving beam. Therefore, UE 120 can measure a periodic CSI-RS resource configured with the same TCI state indicated for the active serving beam. In this way, the identifier of the measured resource is implicitly determined based on the indicated TCI (e.g., instead of using a fixed RS identifier in the reporting configuration). This saves on RRC reconfiguration, while the same periodic CSI-RS resource can be shared by multiple UEs with a fixed TCI state. Figure 17 To provide an example.
[0111] As another example, UE 120 can be configured with X The periodic resources used (where the periodic resources used are periodic resources used for channel measurement or interference measurement), among which X The periodic resources used follow UE 120. Y One of the TCI states indicated. In some respects, X Each resource used can have a prior X A configured periodic resource identifier (i.e., X The lowest resource identifier index), whose configured TCI state matches the TCI state of the associated indicator (where the TCI state of the associated indicator is the previous one). X Each configured periodic resource identifier is configured to follow the indicated TCI state. In some respects, X Each resource used may have a last X A configured periodic resource identifier (i.e., X The highest resource identifier index), whose configured TCI state matches the TCI state of the associated indicator (where the TCI state of the associated indicator is the last one). X Each configured periodic resource identifier is configured to follow the indicated TCI state. Figure 18 and Figure 6 To provide an example.
[0112] In some aspects, the identifier may include an identifier corresponding to the root QCL source RS of the TCI state (e.g., a floating RS may be the root QCL source RS of the TCI state). As another example, the identifier may include an identifier corresponding to the QCL source RS of the TCI state (e.g., a floating RS may be the QCL source RS of the TCI state). As another example, the identifier may include an identifier of a beam fault detection (BFD) resource or radio link monitoring (RLM) RS associated with the TCI state (e.g., a floating RS may be an implicit BFD or RLM RS associated with the TCI state). As another example, the identifier may include an identifier of a dedicated RS linked to the TCI state (e.g., a floating RS may be a dedicated RS linked to the TCI state).
[0113] As mentioned, in some aspects, the identifier may be linked to the TCI state of the active serving beam of the UE 120 (e.g., may identify the RS indicated by that TCI state). For example, the RS measured in connection with an RS report may be an RS identifier (e.g., an SSB identifier) that serves as the root QCL source indicating the TCI state of the current (e.g., active) downlink and / or uplink serving beam that is used or configured for data or control channels. For example, the measured RS may be an SSB that is a QCL-Type A, Type B, Type C, or Type D source RS of the QCL source RS indicating the joint or individual downlink or uplink TCI state for the Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), Physical Uplink Shared Channel (PUSCH), and / or Physical Uplink Control Channel (PUCCH) (e.g., for the serving beam). The SSB can be used in TCI state as a QCL-Type C and QCL-Type D source RS for Tracking Reference Signal (TRS) and a CSI-RS for beam management, and in TCI state as a QCL-Type D source RS for the CSI-RS used for CSI. If the indicated TCI state has two QCL source RSs, then in the indicated TCI state, the SSB can be a QCL-Type D source RS for the QCL-Type D RS. If the SSB has already been transmitted for other purposes, this may not involve RS transmission overhead.
[0114] In some respects, the RS measured in connection with an RS report can be an RS that serves as a QCL source RS for the indicated TCI state of the current downlink and / or uplink serving beam used or configured for data or control channels. For example, the measured RS can be a CSI-RS, which can be a QCL-Type A, Type B, Type C, or Type D source RS for the joint or individual downlink and / or uplink TCI state indicated for the PDCCH, PDSCH, PUSCH, and / or PUCCH (e.g., for the serving beam). If the indicated TCI state has two QCL source RSs, then the measured RS can be a QCL-Type D RS for the indicated TCI state.
[0115] In some respects, the measured RS can be a TRS indicated by the TCI state (where the TRS is a CSI-RS configured as a TRS). For example, in the TCI state, the same TRS can be used as both a QCL-Type A source RS and a QCL-Type D source RS. This reduces RS transmission overhead if TRSs have been sent for different purposes. In this example, network node 110 can send signaling indicating that one or more TRS resources (e.g., periodic RS resources) in the resource set associated with the TCI should be measured and reported.
[0116] In some respects, the measured RS can be a CSI-RS for CSI indicated by the TCI state. For example, in the TCI state, the same CSI-RS for CSI can be used as both a QCL-Type A source RS and a QCL-Type D source RS. This reduces RS transmission overhead if CSI-RS have been transmitted for different purposes. In this example, UE 120 can calculate the measured value of the RS report for the measured RS. For example, for a multi-port CSI-RS for CSI, UE 120 can use the average of per-port metrics calculated across all ports of the CSI-RS resource to calculate the measured value (such as Layer 1 Reference Signal Received Power (L1-RSRP) or Layer 1 Signal-to-Interference-plus-Noise Ratio (L1-SINR)). For example, for a multi-port CSI-RS for CSI, UE 120 can use the average of per-port metrics calculated across a subset of ports of the CSI-RS resource (e.g., the set of ports with the highest port identifier or the set of ports with the lowest port identifier) to calculate the measured value (such as L1-RSRP or L1-SINR). For example, for multi-port CSI-RS used for CSI, UE 120 can use a metric calculated for a single port of the CSI-RS resource (e.g., the port with the highest port identifier or the port with the lowest port identifier) to calculate a measurement (such as L1-RSRP or L1-SINR).
[0117] In some respects, the measured RS can be a CSI-RS for beam management (BM) indicated by the TCI state. For example, a CSI-RS for BM can be used as a QCL-Type D source RS, where the TRS is a QCL-Type A source RS for the TCI state. This can be advantageous because the CSI-RS for BM can be configured with a relatively short periodicity with low overhead (e.g., a 10ms periodicity with 1 symbol per CSI-RS resource).
[0118] As mentioned, in some respects, the measured RS can be a dedicated periodic RS. For example, the measured RS can be considered a Beam Change Detection (BVD) RS, where the BVD RS is linked to the TCI state. When the UE 120 switches the active serving beam to the TCI state, the UE can measure the BVD RS and can send an RS report about the BVD RS.
[0119] In some respects, the measured RS can be a QCL source RS, which serves as an implicit BFD RS or RLM RS for the TCI state. For example, if a QCL-Type D source RS exists for the indicated TCI state, the QCI-Type D source RS for the indicated TCI state of the active serving beam can be used as an implicit BFD or RLM RS for the corresponding serving beam. Otherwise, the QCL source RS presented in the indicated TCI state can be used as an implicit BFD / RLM RS. These source RSs can be measured and reported as floating measurement RSs.
[0120] In some respects, where no TCI state indicates the serving beam, an identifier (e.g., the RS identifier for a floating measurement) may be linked to (e.g., may identify) the QCL source RS of the serving beam. For example, if no TCI state indicates the serving beam, the serving beam may be indicated by the SSB used for the Most Recently Accessed Channel (RACH) procedure. In this case, the RS used for RS reporting may be the SSB that serves as the QCL source RS of the serving beam.
[0121] In some aspects, an identifier (e.g., an RS identifier for floating measurements) may be linked to (e.g., may identify) an active TCI state of the active beam of UE 120, where the active beam can be a serving beam or a non-serving beam. For example, the RS for floating measurements may be linked to a specific active TCI state. UE 120 can use the active TCI state to detect corresponding beam quality changes. The TCI state may be activated by Media Access Control or Downlink Control Information signaling. Once activated, the TCI state can be selected for transmission (e.g., the TCI state can be used). In some aspects, the active TCI state may be associated with a serving beam. In some aspects, the active TCI state may be associated with a non-serving beam. In some aspects, the active TCI state may be indicated by a sequence index. For example, the UE may use the first active TCI state (e.g., with the lowest index) for the RS for floating measurements. In this example, the RS for floating measurements may be the root QCL source RS or the QCL source RS of the active TCI, or it may be a dedicated RS (e.g., a BVD RS) linked to the TCI state.
[0122] In some aspects, configuration information may indicate the reporting mode used for RS reporting. For example, configuration information may indicate that UE120 should send an RS report at each configured reporting time. As another example, configuration information may include the configuration for event-triggered RS reporting. For example, for a given reporting time, the configuration may indicate that an RS report is sent only when a change in a metric (e.g., a beam quality change parameter) meets a threshold. As another example, configuration information may indicate that an RS report is always sent at the first reporting time for a given discontinuous reception (DRX) activity period, and may indicate event-triggered RS reporting for the remaining reporting times for a given DRX activity period.
[0123] As shown by reference numeral 620 in the attached figure, the UE may send a first RS report (e.g., a periodic RS report or a semi-persistent RS report). The first RS report may indicate a measurement value regarding one of the configured periodic RS resources (e.g., the first periodic RS resource). For example, the measurement value may include an L1-RSRP value, an L1-SINR value, etc. The UE 120 may measure periodic RS resources, referred to as measuring floating measurements on periodic RS resources. For example, the periodic RS resource may correspond to the active serving beam of the UE 120, as described above.
[0124] As shown by reference numeral 630 in the attached figure, the UE may send a second RS report (e.g., a periodic RS report or a semi-persistent RS report). The second RS report may indicate a measurement of one of the configured periodic RS resources (e.g., a second periodic RS resource), which may be the same periodic RS resource reported in the first RS report, or may be different from the periodic RS resource reported in the first RS report (e.g., the first periodic RS resource). Measurements may include L1-RSRP values, L1-SINR values, etc. The UE 120 may measure periodic RS resources, referred to as measuring floating measurements on periodic RS resources. For example, a periodic RS resource may correspond to the active serving beam of the UE 120, as described above. In some aspects, the UE may send a second RS report without updating the TCI state of the configured periodic RS resources.
[0125] In some aspects, the first RS report or the second RS report may include a logical beam identifier. The logical beam identifier may identify the serving beam. For example, instead of an RS identifier indicating a fixed measurement (as configured by configuration information), the report configuration for the first RS report or the second RS report may indicate a logical beam identifier. If the measured RS identifier is linked to an indicated TCI state of the serving beam (as described above), the logical beam identifier may include an identifier of the indicated TCI state. For example, the logical beam identifier may be determined based on the order among all indicated TCI states. In this example, the logical beam identifier may correspond to the first indicated TCI state, the second indicated TCI state, and so on. In some aspects, the logical beam identifier may be based at least in part on an order index of the TCI states mapped to the indicated TCI code point (e.g., the first or second TCI state mapped to the indicated TCI code point). In some aspects, the logical beam identifier may be explicitly signaled for each indicated TCI state (e.g., in a TCI activation MAC-CE or a TCI indication DCI). In some aspects, the logical beam identifier may be based at least in part on the order of the indicated TCI state among all indicated TCI states. For example, for an indicated TCI state with an identifier of 10, the beam identifier may be 1, and for an indicated TCI state with an identifier of 20, the beam identifier may be 2 (e.g., the indicated TCI state with a lower identifier may use the first beam identifier, and the indicated TCI state with a higher identifier may use the second TCI state). In some aspects, the reporting configuration for RS reports (e.g., the first RS report and / or the second RS report) may indicate the type of indicated TCI state, such as a combined downlink / uplink TCI state, a separate downlink TCI state, or a separate uplink TCI state.
[0126] For example, the RS reporting configuration for the first floating measurement RS can signal the first indicated joint DL / UL TCI status to indicate that the corresponding floating measurement RS is linked to the first indicated joint DL / UL TCI status. Similarly, the RS reporting configuration for the second floating measurement RS can signal the second indicated joint DL / UL TCI status to indicate that the corresponding floating measurement RS is linked to the second indicated joint DL / UL TCI status. The reported metrics for both the first and second floating measurement RSs will be carried in the same report.
[0127] In some aspects, the UE may switch from a first periodic RS resource to a second periodic RS resource based on the handover timing. For example, the UE may switch from measuring the first periodic RS resource and / or generating reports for the first periodic RS resource to measuring and / or generating reports for the second periodic RS resource based on the handover timing. In some aspects, the handover timing is based at least in part on the application time of the TCI state for the serving beam. For example, a floatingly measured RS may be switched after the application time of a newly indicated TCI state. For example, suppose the first floatingly measured RS (first periodic RS resource) is linked to the first indicated joint DL / UL TCI state, and suppose the first indicated joint TCI state is later updated from TCI state identifier 10 to TCI state identifier 20 by DCI or MAC-CE. After the application time of TCI state identifier 20, the UE 120 may begin measuring the floatingly measured RS linked to the new first indicated joint TCI, which corresponds to TCI state identifier 20.
[0128] In some aspects, the first periodic RS resource can be used for an RS type different from the second periodic RS resource. For example, the RS for a floating measurement may differ for the first periodic RS resource from that for the second periodic RS resource. In some aspects, the first periodic RS resource can be associated with an RS type different from the second periodic RS resource. For example, the first periodic RS resource can be used for SSB, and the second periodic RS resource can be used for CSI-RS. In some aspects, the first periodic RS resource can be used for an RS format different from the second periodic RS resource. For example, the first periodic RS resource can be used for a single-symbol CSI-RS with 3 resource elements per resource block, and the second periodic RS resource can be used for a double-symbol CSI-RS with one resource element per resource block. In some aspects, the first periodic RS resource can have a periodicity different from the second periodic RS resource. For example, the first periodic RS resource can have a periodicity of 10 ms, and the second periodic RS resource can have a periodicity of 30 ms. In some aspects, the first periodic RS resource and the second periodic RS resource can be forced to have the same RS type. In some aspects, the first periodic RS and the second periodic RS can be forced to have the same RS format. In some respects, the first periodic RS resources can be forced to have the same periodicity.
[0129] The first or second RS report may include one or more metrics. For example, an RS report may indicate a measured value of RS for a floating measurement. In some aspects, the metric may include a beam quality change indicator. The beam quality change indicator (e.g., 1 bit) may indicate whether the difference between the current measured metric of RS based on the floating measurement and a reference value exceeds a threshold (e.g., RSRP / SINR change > 1 dB or 2 dB). For example, in an indicator with ID= X After the TCI state is used as the serving beam, UE 120 can record a reference value for that TCI state and compare that reference value with a metric measured at each time of the floating measured RS (in some aspects described above, the floating measured RS may be the QCL source RS in the currently indicated TCI state). A corresponding beam quality change indicator can indicate whether the difference exceeds a threshold. In some aspects, network node 110 can send information indicating the reference value, and UE 120 can receive information indicating the reference value. For example, network node 110 can send information indicating the reference value in a beam switching command for the serving beam of UE 120.
[0130] In some respects, the reference values described above can be reported metrics associated with the currently indicated TCI state (e.g., the last reported metric, the first reported metric, or another reported metric), such as reported metrics before, after, or in time closest to the time when the TCI state was indicated to be used (e.g., the time when the application of the indicated TCI state occurred). For example, the reported metric can be measured based on the QCL source RS in the TCI state or based on the SSB of the root QCL source RS that is the QCL source RS in the TCI state. In this example, network node 110 can also know the reference value of the serving beam based on the updated TCI state. However, network node 110 can provide information indicating that the reported (e.g., floating measurement) RS is linked to the TCI state, because the reported RS may be different from the QCL source RS.
[0131] In some respects, the reference value can be a metric associated with the currently indicated TCI state (e.g., the metric of the last measured measurement, the metric of the first measured measurement, or the metric of another measured measurement), such as a metric measured before, after, or in time closest to the time when the TCI state was indicated to be used. For example, the metric can be measured based on the QCL source RS in the TCI state or based on the SSB of the root QCL source RS that is the QCL source RS in the TCI state. In this option, network node 110 may not be aware of the reference value, and UE 120 may not report the reference value. However, since no report is sent, a link between the reported RS and the TCI state may not be required.
[0132] In some respects, the first RS report or the second RS report may indicate the metric actually measured, such as L1-RSRP or L1-SINR. If the first RS report is associated with an RS type different from the second RS report, the metric actually measured may be RS type specific. For example, the metric actually measured may include the synchronization signal RSRP for SSB or the CSI RSRP for L1-RSRP measurements based on CSI-RS.
[0133] In some aspects, a first or second RS report may indicate whether a measured metric meets a threshold. For example, a first or second RS report may include a beam quality indicator (e.g., bits) indicating whether a measured metric is above or below a threshold. In some aspects, the threshold may be specific to the RS type. Additionally or alternatively, the threshold may be specific to the RS format. In some aspects, the threshold may be common across RS types. In some aspects, the threshold may be common across RS formats.
[0134] In some respects, the measurement may be based at least in part on the compensated transmit power. For example, if a first periodic RS resource is associated with a transmit power different from that of a second periodic RS resource, the UE 120 may apply compensation at least in part based on the different transmit power. For example, the UE may derive the compensation from a reference transmit power, such as the SSB transmit power. Alternatively, the UE 120 may not apply compensation at least in part based on the different transmit power.
[0135] In some aspects, the first RS report or the second RS report may include values for uplink metrics and values for downlink metrics. For example, the RS report may include a first parameter indicating a first value of a downlink-related metric (e.g., a change in downlink beam quality) and a second parameter indicating a second value of a uplink-related metric (e.g., a change in uplink beam quality). In some aspects, the uplink beam quality change indicator may be based at least in part on a change in uplink RSRP satisfying (e.g., exceeding) a threshold, wherein the uplink RSRP is equal to the uplink transmit power minus the downlink transmit power plus the downlink RSRP value. Therefore, in the presence of a human body near UE 120, the transmit power of UE 120 may be reduced to meet the maximum permissible exposure requirement, and network node 110 may predict a decrease in the received RSRP of the uplink serving beam.
[0136] In some aspects, the first or second RS report may indicate a predicted metric, such as a predicted beam quality change, as described below. For example, UE 120 may use AI / ML-based beam blocking prediction (as described below) to predict beam quality changes using a floating-measure RS. UE 120 may report beam quality change metrics for the current time (e.g., without prediction, based on current measurements) and / or future time (e.g., with prediction, at least in part based on predicted measurements). When reporting beam quality change metrics for future time, the UE may send information indicating a time value (e.g., a timestamp) associated with the beam quality change metric. In some aspects, the time value may be an absolute time value. In some aspects, the timestamp may be a relative time value (e.g., relative to the time of transmission of the RS report indicating the beam quality change metric or the measurement time of the floating-measure RS). In some aspects, UE 120 may also send an indication of the confidence level of the prediction, as described below. The confidence level may indicate, for example, an ML-based confidence score, expected value, standard deviation, etc.
[0137] AI / ML-based beam blocking prediction may involve using an AI / ML model trained to output information indicating predictions of beam quality changes over future times, at least in part, based on inputs. Inputs may include, for example, historical measurements of beam quality, indications of the serving beam of UE 120, indications of the orientation or location of UE 120 or the rate of change of orientation or location, indications of radio frequency conditions at UE 120 (e.g., radio frequency map, one or more blockages, one or more clusters, etc.). The AI / ML model can be trained on a training set that includes inputs (e.g., one or more of the inputs described above) and corresponding beam quality change values. For example, the AI / ML model may be trained at UE 120, or it may be trained offline and implemented at UE 120. The information indicating predictions of beam quality changes may indicate that beam quality is expected to decrease below a threshold or change above a threshold over future times. Information indicating a prediction of beam quality changes may additionally or alternatively indicate a future time (e.g., via a time value predicting when the beam quality change will occur, such as via a timestamp).
[0138] In some aspects, the first or second RS report may be at least partially based on filtering operations. For example, time filtering may be applied to metrics derived from floating RS measurements, which can improve the accuracy of the metrics by reducing the impact of outlier measurements. Filtering may include applying time-domain operations to a set of measurements, such as averaging or smoothing operations. In some aspects, network node 110 may configure filtering. In some aspects, the configuration for filtering may be specified in the wireless communication specification. In some aspects, UE 120 may determine the configuration for filtering. In some aspects, filtering for a given periodic RS may be applied once the corresponding TCI state (indicating a given periodic RS) is activated (e.g., before indicating a TCI state for a serving beam). In some aspects, filtering may be applied after indicating a TCI state for a serving beam. In some aspects, filtering may be reset upon receiving another TCI indication (e.g., UE 120 may initiate a new filtering operation and discard time-domain information associated with the previous filtering operation upon receiving another TCI indication).
[0139] In some respects, the transmission of the first or second RS report may be based at least in part on uplink control information (UCI) multiplexing priority. For example, UE 120 may apply UCI multiplexing if multiple UCI types are to be multiplexed in the same uplink channel (PUCCH or PUSCH) with insufficient payload. In some respects, the UCI multiplexing priority of the metric (or RS report containing the metric) may be higher than the priority of one or more of HARQ acknowledgment (ACK), scheduling request, the first part of CSI, or the second part of CSI. In some respects, the UCI multiplexing priority of the metric (or RS report containing the metric) may be lower than the priority of one or more of HARQ ACK, scheduling request, the first part of CSI, or the second part of CSI. In some respects, for RS reports that include CSI reports, the UCI multiplexing priority may be higher than one or more of the following: periodic CSI reports, semi-persistent CSI reports, aperiodic CSI reports, CSI reports with L1-RSRP, CSI reports with L1-SINR, CSI reports with channel state feedback, or combinations thereof. In other respects, for RS reports that include CSI reports, the UCI multiplexing priority may be lower than one or more of the following: periodic CSI reports, semi-persistent CSI reports, aperiodic CSI reports, CSI reports with L1-RSRP, CSI reports with L1-SINR, CSI reports with channel state feedback, or combinations thereof.
[0140] In some aspects, the UE may send RS reports (e.g., a first RS report or a second RS report) based at least in part on a threshold change in a parameter (e.g., a metric) of the active serving beam. For example, in non-DRX mode (where the UE 120 is not configured with a DRX cycle that includes active and inactive times), the UE 120 may send an RS report when the beam quality of the serving beam changes significantly (e.g., when a metric changes by at least a threshold). For example, the RS report may include an indication that a parameter (e.g., a metric) of the active serving beam (e.g., L1-RSRP, L1-SINR, etc.) has changed by at least a threshold. This can reduce UE power consumption and interference.
[0141] In some aspects, UE 120 may send RS reports (e.g., a first RS report or a second RS report) at least in part based on DRX cycles. For example, UE 120 may be configured with DRX cycles that include active and inactive times. During active times, UE 120 may monitor PDCCH or other forms of communication. During inactive times, UE 120 may not monitor such communication. In some aspects, UE 120 may send at least one RS report during each DRX active time (e.g., regardless of whether a threshold change occurs in the parameters or metric of the active serving beam). For example, if the DRX cycle's DRX period is longer than a threshold (e.g., regardless of whether a change in the metric of the active serving beam meets the threshold), UE 120 may send at least one RS report during each DRX active time. In some aspects, at least one RS report may occur at the earliest RS report time within a DRX active time. In some aspects, at least one RS report may occur at the latest RS report time prior to a DRX active time. In some respects, if UE 120 does not send an RS report during the DRX activity period, network node 110 may attempt to communicate with UE 120 using a different beam. For example, network node 110 may perform paging across one or more SSBs. As another example, network node 110 may attempt to communicate with the UE via a primary cell in another frequency range, such as FR1.
[0142] In some aspects, network node 110 or UE 120 may send indications of changes to the reporting frequency of RS reports. For example, in all candidate reporting times (where candidate reporting times are times on which UE 120 may send RS reports, such as reporting resources for periodic RS resources), network node 110 or UE 120 may initially indicate the use of a first subset of candidate reporting times (such as an 80ms periodicity based on a first periodicity). Then, UE 120 or network node 110 may indicate the use of a second subset of candidate reporting times (e.g., a 40ms periodicity based on a second periodicity), such as changing at least a threshold or changing at least a threshold number or frequency of RS reports based at least partially on the reporting metric. In some aspects, UE 120 or network node 110 may indicate the sending of RS reports in all candidate reporting times (e.g., changing at least a threshold or changing at least a threshold number or frequency of RS reports based at least partially on the reporting metric).
[0143] In some aspects, the first or second RS report may indicate a beam update scheme. For example, the first or second RS report may indicate a beam update scheme rather than beam quality or a measure of beam quality change. For example, the beam update scheme may be based at least in part on AI / ML-based beam prediction, which outputs predicted beam update parameters. The predicted beam update parameters may indicate expected changes in the beam, such as a prediction that the UE-side beam may change while the network-side narrow beam remains constant (e.g., the UE 120 beam may change while the network node 110 beam does not change), a prediction that the network-side narrow beam may change, or a prediction that the network-side wide beam may change. In some aspects, the predicted beam update parameters may indicate the time associated with the expected beam change. The AI / ML-based beam prediction may use an AI / ML model trained at least in part to output information indicating the predicted beam update parameters based on the input. Inputs may include, for example, historical measurements of beam quality, historical information about UE-side or network-side beam updates, indications of the serving beam of UE 120, measurements associated with the serving beam, indications of the orientation or location of UE 120 or the rate of change of orientation or location, indications of radio frequency conditions at UE 120 (e.g., radio frequency map, one or more blockages, one or more clusters, etc.). AI / ML techniques can be used to train an AI / ML model on a training set that includes the inputs (e.g., one or more of the inputs described above) and the corresponding beam updates. For example, the AI / ML model can be trained at UE 120, or it can be trained offline and implemented at UE 120. Information indicating predicted beam update parameters may indicate that the UE-side beam and / or network-side beam is predicted to change at a future time (e.g., from a first serving beam to a second serving beam). Information indicating a prediction of beam quality changes may additionally or alternatively indicate a future time (e.g., via a time value predicting the occurrence of the beam quality change, such as via a timestamp).
[0144] In some aspects, UE 120 may request on-demand UE beamfining based at least in part on a prediction that UE 120's beam may change without changing the beam of network node 110 (where network node 110 may trigger CSI-RS with beam repetition for UE receive beamfining). As another example, UE 120 may request on-demand gNB narrow beamfining within the same wide beam based at least in part on a prediction that the optimal gNB narrow beam may change while the optimal gNB wide beam remains constant (e.g., where network node 110 may trigger CSI-RS using narrow beam scanning under a given wide beam (such as a given SSB beam)). As another example, UE 120 may request on-demand gNB wide beam reporting based at least in part on a prediction that the optimal gNB wide beam (e.g., SSB beam) may change (e.g., where network node 110 may trigger reporting of wide beam measurements for UE 120).
[0145] In some respects, UE 120 may receive signaling that explicitly updates the RS of measurements for the active serving beam. For example, instead of implicit updates of the RS of measurements based on the serving beam or the corresponding indicated TCI status, the RS of measurements may be explicitly and dynamically updated by MAC-CE or DCI. For example, MAC-CE or DCI may dynamically update the RS ID of measurements in the RS reporting configuration used for RS reporting.
[0146] As indicated above, Figure 6 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 7 The examples described are different.
[0147] Figure 7 This is a diagram illustrating a reporting example 700 based on several DMRS-based parameters according to this disclosure. Example 700 includes a UE 120 and a network node 110. In some aspects, the operation of example 700 may be combined with the operation of example 600.
[0148] DMRS can be included in channels such as PDSCH or PDCCH. DMRS provides a reference point from which UE 120 can derive adjustments to the received signal to improve channel demodulation performance. DMRS can be used as a measurement RS for various purposes, such as UE-triggered beam or CSI-RS updates (e.g., based on DMRS, the UE can detect sufficient beam quality and therefore recommend beam or CSI-RS updates), beam failure detection (e.g., based at least in part on semi-persistent scheduling DMRS, the UE can detect when the serving beam fails and therefore trigger beam failure recovery), P2 or P3 beam refinement (e.g., DMRS can be used together with CSI-RS or independently as a P2 or P3 reference signal in the case of repetition), and mobility state determination (e.g., in event-triggered reporting, if DMRS indicates satisfactory link quality, the UE can skip candidate cell measurements). Using DMRS as a measurement RS can save overhead, network power, and UE power, reduce interference, and can provide accelerated feedback by leveraging hybrid automatic repeat request acknowledgment.
[0149] In some cases, beam quality may vary due to obstruction, movement, rotation, interference, etc. Timely detection and feedback of changes in beam quality can be achieved, at least in part, based on measurements of the DMRS (such as the RSRP or SINR of the DMRS). These changes may occur infrequently, but may also occur suddenly with rapid changes, such as a 10 dB drop in RSRP within approximately 100 ms under obstruction conditions, or a similar drop in SINR under sudden interference.
[0150] As indicated by reference numeral 710 in the accompanying drawings, network node 110 can transmit and UE 120 can receive signals including DMRS. For example, the signal may include PDCCH transmission or PDSCH transmission. The signal may be semi-persistently scheduled (e.g., using a configuration that can be subsequently activated or deactivated), or it may be scheduled via dynamic permission.
[0151] As shown by reference numeral 720 in the attached figure, UE 120 can determine (or derive) one or more parameters from the DMRS. For example, UE 120 can measure the DMRS and / or the DMRS of one or more other signals, and can derive one or more parameters from the measured DMRS.
[0152] In some aspects, one or more parameters may include RSRP variability parameters. RSRP variability parameters may include bits indicating whether an RSRP change in the serving beam of UE 120 meets a threshold. For example, in some aspects, the threshold may be configured as 1 dB. In some aspects, if the RSRP change meets the threshold, UE 120 or network node 110 may switch the serving beam. For example, if the RSRP variability parameters indicate that the RSRP change meets the threshold, the network node may trigger beam management or channel state feedback transmission for potential beam updates or potential CSI updates. In some aspects, UE 120 may skip the transmission of dedicated beam measurements or RS reports, at least in part, based on transmitting RSRP variability parameters. For example, if a DMRS or HARQ ACK carrying RSRP variability parameters precedes dedicated beam measurements or reports. Y If the event occurs within milliseconds, the UE 120 may not send a dedicated beam measurement or report (e.g., it may skip sending a beam report). Y For numbers.
[0153] In some aspects, one or more parameters may include decoding quality parameters. Decoding quality parameters may indicate whether the decoding quality of the signal fails to meet a threshold. For example, decoding quality parameters may include bits indicating whether the average log-likelihood ratio (LLR) across demodulated bits is below a threshold. In some aspects, the threshold may be specific to a modulation scheme, coding scheme, or a combination thereof.
[0154] In some aspects, one or more parameters may include interference quality parameters. Interference quality parameters may, for example, indicate via bits whether the interference level is at least a threshold higher than the noise floor. For example, in some implementations, the threshold may be 3 dB.
[0155] As shown by reference numeral 730 in the accompanying drawings, UE 120 may send a report in association with HARQ feedback, and network node 110 may receive the report in association with HARQ feedback. For example, the report may be multiplexed with HARQ feedback, or HARQ feedback may include the report, or the report may include HARQ feedback. The report may indicate one or more parameters. For example, if UE 120 determines at least two parameters, the report may be jointly encoded to indicate at least two parameters. In some aspects, the report may indicate at least two parameters by indicating a requested action corresponding to at least two parameters. For example, a combination of parameters may be associated with an action that can be performed by UE 120 or network node 110. The report may include a field indicating an action, and the action may correspond to a combination of parameters. In one example, the field may include two bits, where 00 indicates no action, 01 indicates beam and / or CSI update, 10 indicates a request to change subband or carrier, and 11 indicates a request to reduce rate.
[0156] Table 1 provides examples of actions corresponding to different combinations of parameters.
[0157]
[0158] Table 1
[0159] Table 2 provides another example of actions corresponding to different combinations of parameters.
[0160]
[0161] Table 2
[0162] In some respects, network node 110 may perform actions based at least in part on reports. For example, network node 110 may perform actions indicated by reports, or may configure UE 120 based on actions indicated by reports.
[0163] As indicated above, Figure 7 This is provided as an example. Other examples are available with reference to [the relevant information]. Figure 8 The examples described are different.
[0164] Figure 10 This is a flowchart of an example method 800 for wireless communication. Method 800 may be performed at, for example, a UE (e.g., UE 120) or a device of the UE.
[0165] At 810, the UE can receive configuration indicating a first TCI state for a first periodic RS resource and a second TCI state for a second periodic RS resource. For example, the UE (e.g., using...) Figure 6 The communication manager 140 and / or receiving component 1002 described herein can receive configurations indicating a first TCI state for a first periodic RS resource and a second TCI state for a second periodic RS resource, as described above in conjunction with, for example... Figure 10 And as described at 610. In some aspects, the first RS resource and the second RS resource are associated with RS parameters, the RS parameters for the first RS resource being different from the RS parameters for the second RS resource, and the RS parameters including at least one of RS type, RS format, or periodicity. A network node (e.g., network node 110) may send configuration.
[0166] At 820, the UE may send a first RS report associated with the UE's active serving beam, wherein the first RS report is based on a first periodic RS resource and corresponds to a first TCI state indicated by configuration. For example, the UE (e.g., using...) Figure 6The communication manager 140 and / or transmission component 1004 depicted herein may transmit a first RS report associated with the UE's active serving beam, wherein the first RS report is based on a first periodic RS resource and corresponds to a first TCI state indicated by configuration, as described above in conjunction with, for example Figure 10 And as described at 620. A network node (e.g., network node 110) may receive the first RS report.
[0167] At 830, the UE may send a second RS report associated with the active serving beam, wherein the second RS report is based on a second periodic RS resource and corresponds to a second TCI state indicated by the configuration. For example, the UE (e.g., using...) Figure 6 The communication manager 140 and / or transmitting component 1004 depicted herein may transmit a second RS report associated with the active service beam, wherein the second RS report is based on a second periodic RS resource and corresponds to a second TCI state indicated by configuration, as described above in conjunction with, for example Figure 8 And as described at 630. In some aspects, sending a second RS report also includes sending the second RS report in association with a change in a metric regarding the active serving beam satisfying a threshold. In some aspects, the first RS report or the second RS report indicates predicted beam update parameters. A network node (e.g., network node 110) may receive the second RS report.
[0168] In some aspects, the active serving beam is associated with an identifier, and the first RS report and the second RS report indicate the identifier. In some aspects, the identifier differs in the first RS report from the second RS report. In some aspects, the identifier is linked to the TCI state of the active serving beam. In some aspects, the identifier corresponds to the root QCL source RS of the TCI state of the active serving beam. In some aspects, the identifier corresponds to the QCL source RS of the TCI state of the active serving beam. In some aspects, the identifier corresponds to the beam fault detection RS or radio link monitoring RS of the TCI state of the active serving beam. In some aspects, the identifier corresponds to a dedicated RS linked to the TCI state of the active serving beam. In some aspects, the identifier is linked to the QCL source RS of the active serving beam. In some aspects, the identifier is linked to the active TCI state of the UE's active beam. In some aspects, the identifier is indicated in the RS report configuration of the first RS report or the second RS report. In some aspects, the identifier is based at least in part on the order in which it is associated with one or more indicated TCI states for the active serving beam.
[0169] In some aspects, method 800 includes: switching the active serving beam from a first TCI state to a second TCI state before sending a second RS report; and measuring a second periodic RS resource based on the application time associated with the second TCI state before sending the second RS report. In some aspects, the network node may enable the UE to switch the active serving beam from the first TCI state to the second TCI state.
[0170] In some aspects, the first RS report or the second RS report includes an indication of whether a metric associated with the active serving beam has a change exceeding a threshold. In some aspects, the first RS report or the second RS report includes a first value of the metric associated with the downlink and a second value of the metric associated with the uplink. In some aspects, the first RS report or the second RS report indicates at least one of a predicted metric, a time value associated with the predicted metric, or a confidence level of the predicted metric.
[0171] In some aspects, the UE is in DRX mode, and sending a second RS report also includes sending a second RS report in association with the start of DRX activity time. In some aspects, network nodes may receive a second RS report in association with the start of DRX activity time. In some aspects, sending a second RS report in association with the start of DRX activity time also includes sending a second RS report regardless of whether changes to the metric regarding the active serving beam meet a threshold.
[0172] In some aspects, method 800 includes receiving signaling to update the measured RS resources for the active serving beam to second RS resources after sending a first RS report, wherein the second RS report is at least partially based on the signaling. A network node (e.g., network node 110) may send the signaling to update the measured RS resources.
[0173] In some aspects, sending a second RS report also includes sending the second RS report even before signaling indicating a second periodic RS resource for an active service beam has been received. In some aspects, a network node (e.g., network node 110) may receive the second RS report even before signaling indicating a second periodic RS resource for an active service beam has been sent.
[0174] although Figure 8 An example box of method 800 is shown, but in some respects, method 800 may include... Figure 9 The boxes depicted in the diagram may be fewer, different, or arranged differently than additional boxes. Alternatively, two or more boxes in the diagram of method 800 may be executed in parallel.
[0175] Figure 10This is a flowchart of an example method 900 for wireless communication. Method 900 may be performed at, for example, a UE (e.g., UE 120) or a device of the UE.
[0176] At 910, the UE can receive signals including DMRS. For example, the UE (e.g., using...) Figure 7 The communication manager 140 and / or receiving component 1002 depicted herein may receive signals including DMRS, as described above in conjunction with, for example Figure 10 And as described at 710. In some aspects, the signal includes at least one of physical downlink control channel transmission or physical downlink shared channel transmission. Network nodes may transmit signals including DMRS.
[0177] At 920, the UE can determine two or more parameters (e.g., using...). Figure 7 The communication manager 140 and / or determining component 1008 described herein, as per [reference to...] Figure 10 And as described at 720.
[0178] At 930, the UE may send a report, jointly encoded to indicate at least two parameters, in association with HARQ feedback. For example, the UE (e.g., using...) Figure 7 The communication manager 140 and / or transmitting component 1004 described herein may transmit, in association with HARQ feedback, a report jointly encoded to indicate at least two parameters, which include at least two of the following: an RSRP variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS, as described above in combination, for example... Figure 9 And as described at 720 and 730. Network nodes can receive reports in association with HARQ feedback.
[0179] In some aspects, the RSRP variability parameter includes bits indicating whether the RSRP change of the UE's serving beam meets a threshold. In some aspects, decoding quality is the average LLR value. In some aspects, the threshold is an LLR threshold specific to the modulation and coding scheme. In some aspects, the interference quality parameter indicates whether the interference level is at least a threshold interference value higher than the noise floor. In some aspects, the report indicates a requested action corresponding to at least two parameters. In some aspects, the requested action indicates at least two parameters. In some aspects, the requested action includes at least one of beam update, channel state information update, subband or carrier change, or rate change.
[0180] In some aspects, method 900 includes skipping the transmission of beam reports based at least in part on HARQ feedback within a threshold time for the resources used for beam reporting.
[0181] although Figure 9 An example box of method 900 is shown, but in some respects, method 900 may include... Figure 10 The boxes depicted in the diagram may be fewer, different, or arranged differently than additional boxes. Alternatively, two or more boxes in the diagram of method 900 may be executed in parallel.
[0182] Figure 4 to Figure 7 This is a diagram of an example device 1000 for wireless communication according to the present disclosure. Device 1000 may be a UE, or a UE may include device 1000. In some aspects, device 1000 includes a receiving component 1002 and a transmitting component 1004, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1000 can use the receiving component 1002 and the transmitting component 1004 to communicate with another device 1006 (such as a UE, a base station, or another wireless communication device). As further shown, device 1000 may include a communication manager 140. Communication manager 140 may include a determining component 1008, etc.
[0183] In some respects, device 1000 can be configured to perform the functions described herein. Figure 8 One or more operations as described herein. Additionally or alternatively, the apparatus 1000 may be configured to perform one or more processes described herein (such as...). Figure 9 Method 800 Figure 10 Method 900) or a combination thereof. In some respects, Figure 2 The illustrated device 1000 and / or one or more components may include a combination Figure 10 One or more components of the described UE. Additionally or alternatively, Figure 2 One or more components shown can be combined Figure 2 Implementation within one or more of the described components. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in one or more memories. For example, a component (or a portion thereof) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by one or more controllers or one or more processors to perform the function or operation of the component.
[0184] Receiver 1002 may receive communications from device 1006, such as reference signals, control information, data communications, or combinations thereof. Receiver 1002 may provide the received communications to one or more other components of device 1000. In some aspects, receiver 1002 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signals to one or more other components of device 1000. In some aspects, receiver 1002 may include combinations of... Figure 2 The described UE includes one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receiver processors, one or more controllers / processors, one or more memories, or combinations thereof.
[0185] Transmitting component 1004 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1006. In some aspects, one or more other components of device 1000 may generate communications and provide the generated communications to transmitting component 1004 for transmission to device 1006. In some aspects, transmitting component 1004 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 1006. In some aspects, transmitting component 1004 may include combinations of... Figure 10 The described UE may include one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers / processors, one or more memories, or combinations thereof. In some aspects, the transmit component 1004 may co-located with the receive component 1002 in one or more transceivers.
[0186] The receiving component 1002 can receive configurations indicating a first TCI state for a first periodic RS resource and a second TCI state for a second periodic RS resource. The transmitting component 1004 can transmit a first RS report associated with the UE's active serving beam, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration. The transmitting component 1004 can also transmit a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0187] The receiving component 1002 can receive signals including DMRS. The transmitting component 1004 can transmit, in association with HARQ feedback, a report jointly encoded to indicate at least two parameters, which include at least two of the following: an RSRP variability parameter derived from DMRS, a decoding quality parameter derived from DMRS indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from DMRS. The determining component 1008 can determine at least two parameters.
[0188] Figure 10 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 10 The components shown are compared to components with more components, fewer components, different components, or components arranged in a different way. Furthermore, Figure 10 The two or more components shown can be implemented within a single component, or Figure 10 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 10 The set (one or more) components shown are executable descriptions by Figure 11 The other set of components shown performs one or more functions.
[0189] Figure 11 This is an illustration of an example 1100 of a hardware implementation of an apparatus 1105 for employing a processing system 1110 according to the present disclosure. The apparatus 1105 may be a UE or may be located at a UE (e.g., included in a UE).
[0190] Processing system 1110 can be implemented using a bus architecture generally represented by bus 1115. Bus 1115 may include any number of interconnect buses and bridges, depending on the specific application of processing system 1110 and overall design constraints. Bus 1115 links together various circuits including one or more processors and / or hardware components represented by processor 1120, illustrated components, and computer-readable medium / memory 1125. Bus 1115 may also link various other circuits, such as timing sources, peripheral devices, voltage regulators, and / or power management circuits.
[0191] Processing system 1110 may be coupled to one or more transceivers 1130. Transceiver 1130 is coupled to one or more antennas 1135. Transceiver 1130 provides components for communicating with various other devices via a transmission medium. Transceiver 1130 receives signals from one or more antennas 1135, extracts information from the received signals, and provides the extracted information to processing system 1110 (specifically, receiving component 1002). Furthermore, transceiver 1130 receives information from processing system 1110 (specifically, transmitting component 1004) and generates signals to be applied to one or more antennas 1135 based at least in part on the received information.
[0192] Processing system 1110 includes one or more processors 1120 coupled to computer-readable medium / memory 1125. Processor 1120 is responsible for general processing, including executing software stored on computer-readable medium / memory 1125. When executed by processor 1120, the software causes processing system 1110 to perform the various functions described herein with respect to any particular device. Computer-readable medium / memory 1125 can also be used to store data manipulated by processor 1120 during software execution. The processing system also includes at least one of the illustrated components. A component may be: a software module running in processor 1120, residing in / stored on computer-readable medium / memory 1125, one or more hardware modules coupled to processor 1120, or some combination thereof.
[0193] In some aspects, the processing system 1110 may be a component of the UE 120 and may include one or more memories (such as memory 282) and / or may include one or more processors (such as at least one of TX MIMO processor 266, RX processor 258, and / or controller / processor 280). In some aspects, the apparatus 1105 for wireless communication includes: means for receiving a configuration indicating a first TCI state for a first periodic RS resource and a second TCI state for a second periodic RS resource; means for transmitting a first RS report associated with the UE's active serving beam, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; means for transmitting a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration; means for receiving a signal including DMRS; and means for transmitting a report jointly encoded to indicate at least two parameters in association with HARQ feedback. The aforementioned components may be one or more of the aforementioned components of the processing system 1110 of device 1000 and / or device 1105 configured to perform the functions described herein. As described elsewhere herein, the processing system 1110 may include a TX MIMO processor 266, an RX processor 258, and / or a controller / processor 280. In one configuration, the aforementioned components may be the TX MIMO processor 266, the RX processor 258, and / or the controller / processor 280 configured to perform the functions and / or operations described herein.
[0194] Figure 11 This is provided as an example. Other examples can be combined with it. Figure 12 The examples described are different.
[0195] Figure 14 This is a flowchart of an example method 1200 for wireless communication. Method 1200 may be performed at, for example, a network node (e.g., network node 110) or a device of a network node.
[0196] At 1210, the network node may transmit a configuration indicating the state of a first Transmit Configuration Indicator (TCI) for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource. For example, the network node (e.g., using...) Figure 6 The communication manager 150 and / or transmitting component 1404 depicted herein can transmit configurations indicating a first transmit configuration indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource, as described above in conjunction with, for example... Figure 14And as described at 610. In some respects, the first RS resource and the second RS resource are associated with RS parameters, the RS parameters for the first RS resource being different from the RS parameters for the second RS resource, and the RS parameters including at least one of RS type, RS format, or periodicity.
[0197] At 1220, the network node can receive a first RS report associated with the UE's active serving beam, wherein the first RS report is based on a first periodic RS resource and corresponds to a first TCI state indicated by configuration. For example, the network node (e.g., using...) Figure 6 The communication manager 150 and / or receiving component 1402 depicted herein may receive a first RS report associated with the UE's active serving beam, wherein the first RS report is based on a first periodic RS resource and corresponds to a first TCI state indicated by configuration, as described above in conjunction with, for example Figure 14 And as described at 620.
[0198] In some aspects, method 1200 includes sending signaling after receiving a first RS report to update the RS resource for measurements of the active serving beam to a second RS resource, wherein the second RS report is at least partially based on the signaling.
[0199] At 1230, the network node can receive a second RS report associated with the active service beam, wherein the second RS report is based on a second periodic RS resource and corresponds to a second TCI state indicated by the configuration. For example, the network node (e.g., using...) Figure 6 The communication manager 150 and / or receiving component 1402 depicted herein can receive a second RS report associated with the active service beam, wherein the second RS report is based on a second periodic RS resource and corresponds to a second TCI state indicated by configuration, as described above in conjunction with, for example Figure 12 And as described at 630. In some aspects, receiving a second RS report also includes receiving the second RS report in association with a change in a metric concerning the active serving beam satisfying a threshold. In some aspects, the first RS report or the second RS report indicates predicted beam update parameters. In some aspects, receiving a second RS report also includes receiving the second RS report even before signaling indicating a second periodic RS resource for the active serving beam has been sent.
[0200] In some aspects, receiving a second RS report also includes sending a second RS report in association with the start of DRX activity time. In some aspects, receiving a second RS report in association with the start of DRX activity time also includes receiving a second RS report regardless of whether a change in the metric for the active serving beam meets a threshold.
[0201] In some aspects, the active serving beam is associated with an identifier, and the first RS report and the second RS report indicate the identifier. In some aspects, the identifier differs in the first RS report from the second RS report. In some aspects, the identifier is linked to the TCI state of the active serving beam. In some aspects, the identifier corresponds to the root QCL source RS of the TCI state of the active serving beam. In some aspects, the identifier corresponds to the QCL source RS of the TCI state of the active serving beam.
[0202] In some aspects, the identifier corresponds to a beam fault detection RS or radio link monitoring RS for the TCI state of the active serving beam. In some aspects, the identifier corresponds to a dedicated RS linked to the TCI state of the active serving beam. In some aspects, method 1200 includes switching the active serving beam from a first TCI state to a second TCI state before sending a second RS report, wherein the second RS report is based at least in part on a second periodic RS resource measured according to the application time associated with the second TCI state. In some aspects, the identifier is linked to the QCL source RS of the active serving beam. In some aspects, the identifier is linked to the active TCI state of the UE's active beam.
[0203] In some aspects, the identifier is indicated in the RS report configuration of the first RS report or the second RS report. In some aspects, the identifier is based at least in part on the order in which TCI states associated with one or more indications for the active serving beam are determined. In some aspects, the first RS resource and the second RS resource are associated with RS parameters, the RS parameters for the first RS resource being different from those for the second RS resource, and the RS parameters include at least one of RS type, RS format, or periodicity. In some aspects, the first RS report or the second RS report includes an indication of whether a metric associated with the active serving beam has a change exceeding a threshold.
[0204] In some aspects, the first RS report or the second RS report includes a first value of a metric associated with the downlink and a second value of a metric associated with the uplink. In some aspects, the first RS report or the second RS report indicates at least one of a predicted metric, a time value associated with the predicted metric, or a confidence level of the predicted metric. In some aspects, receiving the second RS report also includes receiving the second RS report in association with a change in a metric regarding the active serving beam satisfying a threshold.
[0205] although Figure 12 An example box of method 1200 is shown, but in some aspects, method 1200 may include... Figure 13 The boxes depicted may be fewer, different, or arranged differently than additional boxes, boxes, or boxes in a different manner. Alternatively, two or more boxes in the box of method 1200 may be performed in parallel.
[0206] Figure 14 This is a flowchart of an example method 1300 for wireless communication. Method 1300 may be performed at, for example, a network node (e.g., network node 110) or a device of a network node.
[0207] At 1310, the network node can transmit a signal including a demodulation reference signal (DMRS). For example, the network node (e.g., using...) Figure 7 The communication manager 150 and / or transmitting component 1404 depicted herein may transmit signals including a demodulation reference signal (DMRS), as described above in conjunction with, for example... Figure 14 And as described at 710. In some aspects, the signal includes at least one of physical downlink control channel transmission or physical downlink shared channel transmission.
[0208] At 1320, a network node may receive a report jointly encoded to indicate at least two parameters in association with Hybrid Automatic Repeat Request (HARQ) feedback, the at least two parameters including at least two of the following: For example, a network node (e.g., using...) Figure 7 The communication manager 150 and / or receiving component 1402 depicted herein may receive, in association with Hybrid Automatic Repeat Request (HARQ) feedback, a report jointly encoded to indicate at least two parameters, which include at least two of the following: a Reference Signal Received Power (RSRP) variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS, as described above in combination, for example... Figure 13 And as described at 720.
[0209] In some respects, RSRP variability parameters include bits that indicate whether the RSRP change of the UE's serving beam meets a threshold.
[0210] In some respects, decoding quality is the average log-likelihood ratio (LLR) value. In other respects, the threshold is an LLR threshold specific to the modulation and coding scheme.
[0211] In some respects, interference quality parameters indicate whether the interference level is at least a threshold interference value higher than the noise floor.
[0212] In some respects, the report indicates a requested action corresponding to at least two parameters. In some respects, the requested action indicates at least two parameters. In some respects, the requested action includes at least one of beam update, channel state information update, subband or carrier change, or rate change.
[0213] although Figure 13An example box of method 1300 is shown, but in some aspects, method 1300 may include... Figure 14 The boxes depicted may be fewer, different, or arranged differently than additional boxes, boxes, or boxes in a different manner. Alternatively, two or more boxes in the box of method 1300 may be performed in parallel.
[0214] Figure 4 to Figure 6 This is a diagram of device 1400. Device 1400 may be a network node, or a network node may include device 1400. In some aspects, device 1400 includes a receiving component 1402 and a transmitting component 1404, which can communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, device 1400 can use the receiving component 1402 and the transmitting component 1404 to communicate with another device 1406 (such as a UE, a base station, or another wireless communication device). As further shown, device 1400 may include a communication manager 150. Communication manager 150 may include one or more of beam switching components 1408, etc.
[0215] In some respects, device 1400 can be configured to perform the functions described herein. Figure 12 One or more operations as described herein. Additionally or alternatively, the apparatus 1400 may be configured to perform one or more processes described herein (such as...). Figure 13 Method 1200 Figure 14 Method 1300) or a combination thereof. In some respects, Figure 2 The device 1400 and / or one or more components shown may include a combination Figure 14 One or more components of the described network node. Additionally or alternatively, Figure 2 One or more components shown can be combined Figure 2 Implementation within one or more of the described components. Additionally or alternatively, one or more components in the set of components may be implemented at least partially as software stored in one or more memories. For example, a component (or a portion thereof) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by one or more controllers or one or more processors to perform the function or operation of the component.
[0216] Receiver 1402 may receive communications from device 1406, such as reference signals, control information, data communications, or combinations thereof. Receiver 1402 may provide the received communications to one or more other components of device 1400. In some aspects, receiver 1402 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) and may provide the processed signals to one or more other components of device 1400. In some aspects, receiver 1402 may include combinations of... Figure 2 The described network node includes one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receiver processors, one or more controllers / processors, one or more memories, or combinations thereof.
[0217] Transmitting component 1404 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1406. In some aspects, one or more other components of device 1400 may generate communications and provide the generated communications to transmitting component 1404 for transmission to device 1406. In some aspects, transmitting component 1404 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 1406. In some aspects, transmitting component 1404 may include combinations of... Figure 14 The described network node includes one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers / processors, one or more memories, or combinations thereof. In some aspects, the transmit component 1404 may co-located with the receive component 1402 in one or more transceivers.
[0218] Transmitting component 1404 can transmit configurations indicating a first Transmit Configuration Indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource. Receiving component 1402 can receive a first RS report associated with the UE's active serving beam, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration. Receiving component 1402 can also receive a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0219] The beam switching component 1408 can switch the active service beam from a first TCI state to a second TCI state before receiving a second RS report, wherein the second RS report is based at least in part on a second periodic RS resource measured according to the application time associated with the second TCI state.
[0220] The transmitting component 1404 may, after receiving the first RS report, transmit signaling to update the RS resource of the measurement for the active serving beam to a second RS resource, wherein the second RS report is at least partially based on the signaling.
[0221] Transmitting component 1404 may transmit a signal including a demodulation reference signal (DMRS). Receiving component 1402 may receive, in association with Hybrid Automatic Repeat Request (HARQ) feedback, a report jointly encoded to indicate at least two parameters, which include at least two of the following: a reference signal received power (RSRP) variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0222] Figure 14 The number and arrangement of components shown are provided as an example. In practice, different arrangements may exist. Figure 14 The components shown are compared to components with more components, fewer components, different components, or components arranged in a different way. Furthermore, Figure 14 The two or more components shown can be implemented within a single component, or Figure 14 The single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 14 The set (one or more) components shown are executable descriptions by Figure 15 The other set of components shown performs one or more functions.
[0223] Figure 15 This is an illustration of an example 1500 of a hardware implementation of a device 1505 employing a processing system 1510 according to the present disclosure. The device 1505 may be a network node or may be located at a network node (e.g., included in a network node).
[0224] Processing system 1510 can be implemented using a bus architecture generally represented by bus 1515. Bus 1515 may include any number of interconnect buses and bridges, depending on the specific application of processing system 1510 and overall design constraints. Bus 1515 links together various circuits including one or more processors and / or hardware components represented by processor 1520, illustrated components, and computer-readable medium / memory 1525. Bus 1515 may also link various other circuits, such as timing sources, peripheral devices, voltage regulators, and / or power management circuits.
[0225] Processing system 1510 may be coupled to one or more transceivers 1530. Transceiver 1530 is coupled to one or more antennas 1535. Transceiver 1530 provides components for communicating with various other devices via a transmission medium. Transceiver 1530 receives signals from one or more antennas 1535, extracts information from the received signals, and provides the extracted information to processing system 1510 (specifically, receiving component 1402). Furthermore, transceiver 1530 receives information from processing system 1510 (specifically, transmitting component 1404) and generates signals to be applied to one or more antennas 1535 based at least in part on the received information.
[0226] Processing system 1510 includes one or more processors 1520 coupled to computer-readable medium / memory 1525. Processor 1520 is responsible for general processing, including executing software stored on computer-readable medium / memory 1525. When executed by processor 1520, the software causes processing system 1510 to perform the various functions described herein with respect to any particular device. Computer-readable medium / memory 1525 can also be used to store data manipulated by processor 1520 during software execution. The processing system also includes at least one of the illustrated components. A component may be: a software module running in processor 1520, residing in / stored in computer-readable medium / memory 1525, one or more hardware modules coupled to processor 1520, or some combination thereof.
[0227] In some aspects, the processing system 1510 may be a component of the network node 110 and may include one or more memories (such as memory 242), and / or may include one or more processors (such as at least one of TX MIMO processor 230, RX processor 238, and / or controller / processor 240). In some aspects, the apparatus 1505 for wireless communication includes: components for transmitting a configuration indicating a first transmit configuration indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource; components for receiving a first RS report associated with an active serving beam of the UE, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and / or components for receiving a second RS report associated with an active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration. In some aspects, apparatus 1500 may include: components for transmitting a signal including a demodulation reference signal (DMRS); and / or components for receiving, in association with Hybrid Automatic Repeat Request (HARQ) feedback, reports jointly encoded to indicate at least two parameters, including at least two of the following: a reference signal received power (RSRP) variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS indicating whether the decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS. The aforementioned components may be one or more of the aforementioned components of the processing system 1510 of apparatus 1400 and / or apparatus 1505 configured to perform the functions stated by the aforementioned components. As described elsewhere herein, processing system 1510 may include a TX MIMO processor 230, a receive processor 238, and / or a controller / processor 240. In one configuration, the aforementioned components may be the TX MIMO processor 230, the receive processor 238, and / or the controller / processor 240 configured to perform the functions and / or operations stated herein.
[0228] Figure 15 This is provided as an example. Other examples can be combined with it. Figure 16 The examples described are different.
[0229] Figure 17This is an illustration of Example 1600, which demonstrates how a measured CSI-RS resource is identified based on an indicated TCI state. The measured CSI-RS resource may be configured with an identifier. In Example 1600, a single periodic CSI-RS is configured as a Channel Measurement Resource (CMR) and indicates a single TCI state only for the serving beam at a given time. In this example, the identifier (i.e., the identifier of the measured CSI-RS resource) can be an identifier whose configured TCI state (i.e., whose periodic CSI-RS resource configuration is configured with a TCI state) matches the indicated TCI state of the active serving beam. Therefore, UE 120 can measure a periodic CSI-RS resource configured with the same TCI state indicated for the active serving beam.
[0230] In Example 1600, UE 120 is configured with 64 CSI-RS resources, each with an identifier (denoted as #1 to #16). In some aspects, UE 120 is pre-configured with these 64 CSI-RS resources, such as via semi-static (e.g., RRC) configuration. Each of the 64 CSI-RS resources is configured with a corresponding TCI state (denoted as TCI #1 to TCI #64). If UE 120 is indicated to have a TCI state #n for its serving beam, UE 120 can use CSI-RS #n to perform CSI measurements and reporting because CSI-RS #n is configured with TCI state #n.
[0231] Figure 18 and Figure 16 to Figure 18 These are illustrations of examples 1700 and 1800 that identify multiple measured CSI-RS resources based on one or more indicated TCI states. UE 120 can be configured with... X The periodic resources used (where the periodic resources used are periodic resources used for channel measurement or interference measurement), among which X The periodic resources used follow UE 120. Y One of the TCI states indicated. In some respects, X Each resource used can have a prior X A configured periodic resource identifier (i.e., X The lowest resource identifier index), whose configured TCI state matches the TCI state of the associated indicator (where the TCI state of the associated indicator is the previous one). X A periodic resource identifier is configured to follow the indication of the TCI state, such as in the reporting configuration. In some respects, X Each resource used may have a last X A configured periodic resource identifier (i.e., X The highest resource identifier index), whose configured TCI state matches the TCI state of the associated indicator (where the TCI state of the associated indicator is the last one). X Each configured periodic resource identifier is configured to follow the indicated TCI state. This approach may be advantageous in the context of PDSCH coherent joint transmission (CJT) across multiple TRPs. For example, UE 120 may have one used CSI-RS resource for each of the multiple TRPs (i.e., there may be...). X (a TRP), and the UE may be indicated to have one or more TCI states (where a single TCI state can be used for all multiple TRPs, or different TCI states can be used for different TRPs).
[0232] In Example 1700, X The number is 4, as shown by reference numeral 1710 in the figures for the first, second, third, and fourth CMRs used. Y A value of 1 means that UE 120 is indicated to have one TCI state across all TRPs. As shown by reference numeral 1720, each of the four used CMRs can be derived from an indicated TCI state (e.g., the first indicated TCI state) for the serving beam of UE 120. For example, when TCI #2 is indicated for the serving beam of UE 120, CSI-RS resources #5, #6, #7, and #8 are used for the four used CMRs (e.g., for CSI measurement and reporting) because these four CSI-RS resources are configured with TCI #2. If more than four CSI-RS resources are configured with TCI #2, UE 120 can use either the first four CSI-RS resources configured with TCI #2 or the last four CSI-RS resources.
[0233] In Example 1800, X The number is 4, as shown by reference numeral 1810 in the figures for the first, second, third, and fourth CMRs used. YThe value is 2, meaning that UE 120 is indicated with two TCI states. The first TCI state (the first indicated TCI state) is used for the first, second, and third used CMRs (corresponding to the first three TRPs), and the second TCI state (the second indicated TCI state) is used for the fourth used CMR (corresponding to the fourth TRP). As shown by reference numeral 1820, the first three used CMRs can be derived from the first indicated TCI state for the first serving beam of UE 120, and as shown by reference numeral 1830, the fourth used CMR can be derived from the second indicated TCI state for the second serving beam of UE 120. For example, when TCI #2 is indicated for the first serving beam of UE 120, CSI-RS resources #4, #5, and #6 are used for the first three used CMRs (e.g., for CSI measurement and reporting) because these three CSI-RS resources are configured with TCI #2. When TCI #4 is designated for the second serving beam of UE 120, CSI-RS resource #10 is used for the fourth CMR (e.g., for CSI measurement and reporting) because that CSI-RS resource is configured with TCI #4.
[0234] Therefore, in the context of PDSCH-CJT (e.g., CJT for transmitting PDSCH from multiple TRPs to a single receiver), the gNB can configure up to four CMRs for up to four TRPs, with two indicated TCIs across all TRPs. As an example, the first three CMRs used may follow the first indicated TCI, while the fourth CMR used may follow the second indicated TCI. The three CMRs used after the first indicated TCI may include CSI-RS #4-#6, whose TCIs match the first indicated TCI, which is TCI #2. Therefore, the UE 120 can measure the first set of periodic CSI-RS resources based on the TCI state of the corresponding active serving beam of the UE 120 configured for each periodic RS resource in the first set of periodic CSI-RS resources. A CMR used after the second indicated TCI can be CSI-RS #10, whose TCI matches the TCI of the second indicated TCI, which is TCI #4. Therefore, the UE can measure and / or report the second set of periodic RS resources based on the TCI status of each periodic RS resource in the second set, configured with another active serving beam of the UE.
[0235] UE 120 may send an RS report corresponding to the CMR used. For example, UE 120 may send an RS report corresponding to each of the CMRs used, based on one or more reporting configurations, as described elsewhere herein. The RS report for the used CMR may indicate the identifier of the used CMR.
[0236] As indicated above, Figure 16 to Figure 18 This is provided as an example. Other examples are available with reference to [the relevant information]. The examples described are different.
[0237] The following provides an overview of some aspects of this disclosure: Aspect 1: A method of wireless communication performed by a user equipment (UE), the method comprising: receiving a configuration indicating a first transmit configuration indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource; transmitting a first RS report associated with an active serving beam of the UE, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and transmitting a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0238] Aspect 2: According to the method of aspect 1, wherein the active service beam is associated with an identifier, and wherein the first RS report and the second RS report indicate the identifier.
[0239] Aspect 3: According to the method of aspect 2, wherein the identifier is different in the first RS report than in the second RS report.
[0240] Aspect 4: According to the method of aspect 2, wherein the identifier is linked to the TCI status of the active service beam.
[0241] Aspect 5: According to the method of aspect 4, wherein the identifier corresponds to the root quasi-co-address (QCL) source RS of the TCI state of the active service beam.
[0242] Aspect 6: According to the method of aspect 4, wherein the identifier corresponds to the quasi-co-located (QCL) source RS of the TCI state of the active service beam.
[0243] Aspect 7: According to the method of aspect 4, wherein the identifier corresponds to the beam fault detection RS or radio link monitoring RS of the TCI state of the active service beam.
[0244] Aspect 8: According to the method of aspect 4, wherein the identifier corresponds to a dedicated RS linked to the TCI state of the active service beam.
[0245] Aspect 9: According to the method of aspect 4, the method further includes: switching the active service beam from the first TCI state to the second TCI state before sending the second RS report; and measuring the second periodic RS resource based on the application time associated with the second TCI state before sending the second RS report.
[0246] Aspect 10: According to the method of aspect 2, wherein the identifier is linked to the quasi-co-located (QCL) source RS of the active service beam.
[0247] Aspect 11: According to the method of aspect 2, wherein the identifier is linked to the active TCI state of the UE's active beam.
[0248] Aspect 12: According to the method of aspect 2, wherein the identifier is indicated in the RS report configuration of the first RS report or the second RS report.
[0249] Aspect 13: According to the method of aspect 11, wherein the identifier is based at least in part on the order in which it is associated with the TCI status of one or more indications for the active service beam.
[0250] Aspect 14: The method according to any one of Aspects 1 to 13, wherein the first RS resource and the second RS resource are associated with RS parameters, the RS parameters for the first RS resource are different from the RS parameters for the second RS resource, and the RS parameters include at least one of: RS type, RS format, or periodicity.
[0251] Aspect 15: The method according to any one of Aspects 1 to 14, wherein the first RS report or the second RS report includes an indication of whether a metric associated with the active service beam has a change exceeding a threshold.
[0252] Aspect 16: According to the method of aspect 15, wherein the first RS report or the second RS report includes a first value of the metric associated with the downlink and a second value of the metric associated with the uplink.
[0253] Aspect 17: The method according to any one of Aspects 1 to 16, wherein the first RS report or the second RS report indicates at least one of the following: a predicted metric, a time value associated with the predicted metric, or a confidence level of the predicted metric.
[0254] Aspect 18: The method according to any one of Aspects 1 to 17, wherein sending the second RS report further includes sending the second RS report in association with a change in a metric relating to the active service beam satisfying a threshold.
[0255] Aspect 19: The method according to any one of Aspects 1 to 18, wherein the UE is in discontinuous reception (DRX) mode, and wherein transmitting the second RS report further includes transmitting the second RS report in association with the start of DRX activity time.
[0256] Aspect 20: According to the method of aspect 19, sending the second RS report in association with the start of the DRX activity time further includes sending the second RS report regardless of whether the change in the metric for the activity service beam meets a threshold.
[0257] Aspect 21: The method according to any one of Aspects 1 to 20, wherein the first RS report or the second RS report indicates the predicted beam update parameters.
[0258] Aspect 22: The method according to any one of aspects 1 to 21, the method further comprising receiving, after sending the first RS report, signaling to update the RS resource of the measurement for the active service beam to the second RS resource, wherein the second RS report is at least partially based on the signaling.
[0259] Aspect 23: The method according to any one of aspects 1 to 22, wherein sending the second RS report further includes sending the second RS report even before signaling indicating the second periodic RS resource for the active service beam has been received.
[0260] Aspect 24: A method of wireless communication performed by a user equipment (UE), the method comprising: receiving a signal including a demodulation reference signal (DMRS); and transmitting, in association with a hybrid automatic repeat request (HARQ) feedback, a report jointly encoded to indicate at least two parameters, the at least two parameters including at least two of the following: a reference signal received power (RSRP) variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS and indicating whether decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0261] Aspect 25: The method according to aspect 24, wherein the signal includes at least one of physical downlink control channel transmission or physical downlink shared channel transmission.
[0262] Aspect 26: The method according to any one of Aspects 24 to 25, wherein the RSRP variability parameter includes a bit indicating whether the RSRP change of the UE's serving beam satisfies a threshold.
[0263] Aspect 27: The method according to any one of Aspects 24 to 26, the method further comprising skipping the transmission of the beam report at least in part based on the HARQ feedback within a threshold time for the resources used for the beam report.
[0264] Aspect 28: The method according to any one of Aspects 24 to 27, wherein the decoding quality is the average log-likelihood ratio (LLR) value.
[0265] Aspect 29: The method according to aspect 28, wherein the threshold is an LLR threshold specific to the modulation and coding scheme.
[0266] Aspect 30: The method according to any one of Aspects 24 to 29, wherein the interference quality parameter indicates whether the interference level is at least a threshold interference value higher than the noise floor.
[0267] Aspect 31: The method according to any one of Aspects 24 to 30, wherein the report indicates the action of a request corresponding to the at least two parameters.
[0268] Aspect 32: The method according to aspect 31, wherein the requested action indicates the at least two parameters.
[0269] Aspect 33: The method according to aspect 31, wherein the requested action includes at least one of the following: beam update, channel state information update, subband or carrier change or rate change.
[0270] Aspect 34: A method for wireless communication performed by a network node, the method comprising: transmitting a configuration indicating a first Transmit Configuration Indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource; receiving a first RS report associated with an active serving beam of the UE, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and receiving a second RS report associated with the active serving beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
[0271] Aspect 35: According to the method of aspect 34, wherein the active service beam is associated with an identifier, and wherein the first RS report and the second RS report indicate the identifier.
[0272] Aspect 36: The method according to aspect 35, wherein the identifier is different in the first RS report than in the second RS report.
[0273] Aspect 37: According to the method of aspect 35, wherein the identifier is linked to the TCI state of the active service beam.
[0274] Aspect 38: The method according to aspect 37, wherein the identifier corresponds to the root quasi-co-address (QCL) source RS of the TCI state of the active service beam.
[0275] Aspect 39: The method according to aspect 37, wherein the identifier corresponds to the quasi-co-located (QCL) source RS of the TCI state of the active service beam.
[0276] Aspect 40: The method according to aspect 37, wherein the identifier corresponds to the beam fault detection RS or radio link monitoring RS of the TCI state of the active serving beam.
[0277] Aspect 41: The method according to aspect 37, wherein the identifier corresponds to a dedicated RS linked to the TCI state of the active service beam.
[0278] Aspect 42: The method according to aspect 37, the method further comprising: switching the active service beam from the first TCI state to the second TCI state before receiving the second RS report, wherein the second RS report is based at least in part on measuring the second periodic RS resource according to the application time associated with the second TCI state.
[0279] Aspect 43: The method according to aspect 35, wherein the identifier is linked to the quasi-co-located (QCL) source RS of the active service beam.
[0280] Aspect 44: According to the method of aspect 35, wherein the identifier is linked to the active TCI state of the UE's active beam.
[0281] Aspect 45: According to the method of aspect 35, wherein the identifier is indicated in the RS report configuration of the first RS report or the second RS report.
[0282] Aspect 46: According to the method of aspect 45, the identifier is based at least in part on the order in which it is associated with the TCI status of one or more indications for the active service beam.
[0283] Aspect 47: The method according to any one of Aspects 34 to 46, wherein the first RS resource and the second RS resource are associated with RS parameters, the RS parameters for the first RS resource being different from the RS parameters for the second RS resource, and the RS parameters include at least one of: RS type, RS format, or periodicity.
[0284] Aspect 48: The method according to any one of Aspects 34 to 47, wherein the first RS report or the second RS report includes an indication of whether a metric associated with the active service beam has a change exceeding a threshold.
[0285] Aspect 49: According to the method of aspect 48, wherein the first RS report or the second RS report includes a first value of the metric associated with the downlink and a second value of the metric associated with the uplink.
[0286] Aspect 50: The method according to any one of Aspects 34 to 49, wherein the first RS report or the second RS report indicates at least one of the following: a predicted metric, a time value associated with the predicted metric, or a confidence level of the predicted metric.
[0287] Aspect 51: The method according to any one of Aspects 34 to 50, wherein receiving the second RS report further includes receiving the second RS report in association with a change in a metric relating to the active service beam satisfying a threshold.
[0288] Aspect 52: The method according to any one of aspects 34 to 51, wherein receiving the second RS report further includes transmitting the second RS report in association with the start of discontinuous reception (DRX) activity time.
[0289] Aspect 53: The method according to aspect 52, wherein receiving the second RS report in association with the start of the DRX activity time further includes receiving the second RS report regardless of whether a change in the metric for the activity serving beam satisfies a threshold.
[0290] Aspect 54: The method according to any one of aspects 34 to 53, wherein the first RS report or the second RS report indicates the predicted beam update parameters.
[0291] Aspect 55: The method according to any one of Aspects 34 to 54, the method further comprising sending signaling after receiving the first RS report to update the RS resource of the measurement for the active service beam to the second RS resource, wherein the second RS report is at least partially based on the signaling.
[0292] Aspect 56: The method according to any one of Aspects 34 to 55, wherein receiving the second RS report further includes receiving the second RS report before signaling indicating the second periodic RS resource for the active service beam has been sent.
[0293] Aspect 57: A method of wireless communication performed by a network node, the method comprising: transmitting a signal including a demodulation reference signal (DMRS); and receiving, in association with a hybrid automatic repeat request (HARQ) feedback, a report jointly encoded to indicate at least two parameters, the at least two parameters including at least two of the following: a reference signal received power (RSRP) variability parameter derived from the DMRS, a decoding quality parameter derived from the DMRS and indicating whether decoding quality has failed to meet a threshold, or an interference quality parameter derived from the DMRS.
[0294] Aspect 58: The method according to aspect 57, wherein the signal includes at least one of physical downlink control channel transmission or physical downlink shared channel transmission.
[0295] Aspect 59: The method according to any one of Aspects 57 to 58, wherein the RSRP variability parameter includes a bit indicating whether the RSRP change of the UE's serving beam satisfies a threshold.
[0296] Aspect 60: The method according to any one of Aspects 57 to 59, wherein the decoding quality is the average log-likelihood ratio (LLR) value.
[0297] Aspect 61: The method according to aspect 60, wherein the threshold is an LLR threshold specific to the modulation and coding scheme.
[0298] Aspect 62: The method according to any one of Aspects 57 to 61, wherein the interference quality parameter indicates whether the interference level is at least a threshold interference value higher than the noise floor.
[0299] Aspect 63: The method according to any one of aspects 57 to 62, wherein the report indicates the action of a request corresponding to the at least two parameters.
[0300] Aspect 64: The method according to aspect 63, wherein the requested action indicates the at least two parameters.
[0301] Aspect 65: The method according to aspect 63, wherein the requested action includes at least one of the following: beam update, channel state information update, subband or carrier change or rate change.
[0302] Aspect 66: The method according to any one of Aspects 1 to 23, wherein the first RS report is derived from the measurement of the first periodic RS resource based on the first TCI state indicated for the active service beam of the UE.
[0303] Aspect 67: The method according to any one of aspects 1 to 23 or 66, the method further comprising measuring a set of periodic RS resources including the first periodic RS resources based on each of the plurality of periodic resources being configured with the first TCI state.
[0304] Aspect 68: The method according to any one of aspects 1 to 23 or 66 to 67, the method further comprising measuring the second set of periodic resources based on a third TCI state of each periodic RS resource in the second set of periodic RS resources configured with the second active serving beam of the UE.
[0305] Aspect 69: An apparatus for wireless communication at a device, the apparatus comprising: one or more processors; one or more memories coupled to the one or more processors; and instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to perform the method according to one or more of aspects 1 to 68.
[0306] Aspect 70: An apparatus for wireless communication at a device, the apparatus comprising one or more memories and one or more processors coupled to the one or more memories, the one or more processors being configured to cause the device to perform the method according to one or more of aspects 1 to 68.
[0307] Aspect 71: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 68.
[0308] Aspect 72: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by one or more processors to perform the method according to one or more of aspects 1 to 68.
[0309] Aspect 73: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 1 to 68.
[0310] Aspect 74: A device for wireless communication, the device including a processing system comprising one or more processors and one or more memories coupled to the one or more processors, the processing system being configured to cause the device to perform the method according to one or more of aspects 1 to 68.
[0311] Aspect 75: An apparatus for wireless communication at a device, the apparatus comprising one or more memories and one or more processors coupled to the one or more memories, the one or more processors being individually or collectively configured to cause the device to perform one or more of the methods according to aspects 1 to 68.
[0312] While the foregoing disclosure provides examples and descriptions, it is not intended to be exhaustive or to limit aspects to the precise forms disclosed. Modifications and variations can be made based on the foregoing disclosure, or from various aspects of practice.
[0313] As used herein, the term "component" is intended to be interpreted broadly as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other names, "software" should be interpreted broadly as meaning instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, etc. As used herein, a "processor" is implemented in hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented through various forms of hardware and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limiting in any way. Therefore, no specific software code is referred to in this document to describe the operation and behavior of the systems and / or methods, as those skilled in the art will understand that the software and hardware can be designed, at least in part, based on the descriptions herein, to implement the systems and / or methods.
[0314] As used in this article, depending on the context, "meeting the threshold" can mean a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.
[0315] Although specific combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features may be combined in ways not specifically set forth in the claims and / or not disclosed in the specification. The disclosure of various aspects includes each dependent claim in combination with each other claim in the set of claims. As used herein, the phrase “at least one of” in the list of items refers to any combination of these entries, including a single member. As an example, “at least one of a, b, or c” is intended to cover a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination having multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other ordering of a, b, and c).
[0316] No element, action, or instruction used herein should be construed as essential or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “an” are intended to include one or more items and are interchangeable with “one or more.” Furthermore, as used herein, the article “described” is intended to include one or more items mentioned in connection with the article “described” and is interchangeable with “one or more.” Furthermore, as used herein, the terms “group” and “cluster” are intended to include one or more entries and are interchangeable with “one or more.” If only one item is desired, the phrase “only one” or similar terminology will be used. Additionally, as used herein, the terms “having” and the like are intended to be open-ended terms that do not limit the elements they modify (e.g., an element “having” A may also have B). Furthermore, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated. Additionally, as used herein, the term “or” is intended to be open-ended when used in a series and is interchangeable with “and / or” unless otherwise explicitly stated (e.g., if used in conjunction with “any” or “only one”).
Claims
1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: One or more memory units; and One or more processors, said one or more processors coupled to said one or more memories, said one or more processors individually or collectively configured to cause the UE to: The receiver indicates the configuration of the first transmit configuration indicator (TCI) state for the first periodic reference signal (RS) resource and the second TCI state for the second periodic RS resource. Send a first RS report associated with the UE's active serving beam, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and Send a second RS report associated with the active service beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
2. The apparatus of claim 1, wherein the active service beam is associated with an identifier, and wherein the first RS report and the second RS report indicate the identifier.
3. The apparatus of claim 2, wherein the identifier is different in the first RS report than in the second RS report.
4. The apparatus of claim 2, wherein the identifier is linked to the TCI status of the active service beam.
5. The apparatus of claim 4, wherein the identifier corresponds to the root quasi-co-address (QCL) source RS of the TCI state of the active serving beam.
6. The apparatus of claim 4, wherein the identifier corresponds to the quasi-co-located (QCL) source RS of the TCI state of the active serving beam.
7. The apparatus of claim 4, wherein the identifier corresponds to a beam fault detection RS or radio link monitoring RS for the TCI state of the active serving beam.
8. The apparatus of claim 4, wherein the identifier corresponds to a dedicated RS linked to the TCI state of the active service beam.
9. The apparatus of claim 4, wherein the one or more processors are further configured individually or collectively to: Before sending the second RS report, the active service beam is switched from the first TCI state to the second TCI state; and Before sending the second RS report, the second periodic RS resource is measured based on the application time associated with the second TCI status.
10. The apparatus of claim 2, wherein the identifier is linked to the quasi-co-located (QCL) source RS of the active service beam.
11. The apparatus of claim 2, wherein the identifier is linked to the active TCI state of the UE's active beam.
12. The apparatus of claim 2, wherein the identifier is indicated in the RS report configuration of the first RS report or the second RS report.
13. The apparatus of claim 12, wherein the identifier is based at least in part on the order in which it is associated with the TCI status of one or more indications for the active service beam.
14. The apparatus of claim 1, wherein the first RS resource and the second RS resource are associated with RS parameters, the RS parameters for the first RS resource being different from the RS parameters for the second RS resource, and the RS parameters include at least one of the following: RS type, RS format, or Periodicity.
15. The apparatus of claim 1, wherein the first RS report or the second RS report includes an indication of whether a metric associated with the active service beam has a change exceeding a threshold.
16. The apparatus of claim 15, wherein the first RS report or the second RS report includes a first value of the metric associated with the downlink and a second value of the metric associated with the uplink.
17. The apparatus of claim 1, wherein the first RS report or the second RS report indicates at least one of the following: Predictive metrics The time value associated with the predicted metric, or The confidence level of the predicted metric.
18. The apparatus of claim 1, wherein, in order to send the second RS report, the one or more processors are individually or jointly configured to send the second RS report in association with a change in a metric relating to the active serving beam satisfying a threshold.
19. The apparatus of claim 1, wherein the UE is in discontinuous reception (DRX) mode, and wherein, in order to send the second RS report, the one or more processors are individually or jointly configured to send the second RS report in association with the start of DRX activity time.
20. The apparatus of claim 19, wherein, in order to send the second RS report in association with the start of the DRX activity time, the one or more processors are individually or jointly configured to send the second RS report, regardless of whether a change in the metric relating to the active serving beam satisfies a threshold.
21. The apparatus of claim 1, wherein the first RS report or the second RS report indicates predicted beam update parameters.
22. The apparatus of claim 1, wherein the first RS report is derived from the measurement of the first periodic RS resource based on the first TCI state indicated for the active service beam of the UE.
23. The apparatus of claim 1, wherein the one or more processors are individually or collectively configured to cause the UE to measure the set of periodic RS resources based on each periodic RS resource in the set of periodic RS resources, which includes the first periodic RS resource, being configured with the first TCI state.
24. The apparatus of claim 23, wherein the one or more processors are individually or collectively configured to cause the UE to measure the second set of periodic RS resources based on a third TCI state of the UE's second active serving beam for each periodic RS resource in the second set of periodic resources.
25. A method for wireless communication performed by a user equipment (UE), the method comprising: The receiver indicates the configuration of the first transmit configuration indicator (TCI) state for the first periodic reference signal (RS) resource and the second TCI state for the second periodic RS resource. Send a first RS report associated with the UE's active serving beam, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and Send a second RS report associated with the active service beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
26. The method of claim 25, wherein the active service beam is associated with an identifier, and wherein the first RS report and the second RS report indicate the identifier.
27. The method of claim 26, wherein the identifier is different in the first RS report than in the second RS report.
28. The method of claim 26, wherein the identifier is linked to the TCI status of the active service beam.
29. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising: One or more instructions, which, when executed by one or more processors of a user equipment (UE), cause the UE to: The receiver indicates the configuration of the first transmit configuration indicator (TCI) state for the first periodic reference signal (RS) resource and the second TCI state for the second periodic RS resource. Send a first RS report associated with the UE's active serving beam, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and Send a second RS report associated with the active service beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.
30. An apparatus for wireless communication, the apparatus comprising: A component for receiving a configuration indicating a first transmit configuration indicator (TCI) state for a first periodic reference signal (RS) resource and a second TCI state for a second periodic RS resource; A component for transmitting a first RS report associated with the active service beam of the device, wherein the first RS report is based on the first periodic RS resource and corresponds to the first TCI state indicated by the configuration; and A component for sending a second RS report associated with the active service beam, wherein the second RS report is based on the second periodic RS resource and corresponds to the second TCI state indicated by the configuration.