Techniques for channel state information-reference signal (CSI-RS) resource management for layer 1 / layer 2 trigger mobility (LTM) measurements
By enabling flexible CSI-RS resource management with aperiodic, periodic, and semi-persistent types, the solution addresses limitations in LTM measurements, enhancing UE performance in wireless communication systems.
Patent Information
- Application Number
- PCT/CN2024/109980
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-08-06
- Publication Date
- 2026-02-12
AI Technical Summary
Existing wireless communication systems face challenges in efficiently managing channel state information-reference signal (CSI-RS) resources for Layer 1/Layer 2 trigger mobility (LTM) measurements, particularly due to limitations in configuring aperiodic and semi-persistent resource types, which hinder effective beam measurements.
The implementation of control signaling to enable user equipment (UE) to support LTM CSI reporting based on CSI-RS resources, allowing for configuration of aperiodic, periodic, and semi-persistent resource types, and incorporating transmission configuration indicator (TCI) state management for improved mobility measurements.
Enhances the capability of UEs to perform accurate CSI measurements, improving beam management and mobility performance by enabling flexible resource type configurations for CSI-RS, thereby optimizing communication quality.
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Figure CN2024109980_12022026_PF_FP_ABST
Abstract
Description
TECHNIQUES FOR CHANNEL STATE INFORMATION-REFERENCE SIGNAL (CSI-RS) RESOURCE MANAGEMENT FOR LAYER 1 / LAYER 2 TRIGGER MOBILITY (LTM) MEASUREMENTS
[0001] FIELD OF DISCLOSURE
[0002] PThe following relates to wireless communications, including techniques for channel state information-reference signal (CSI-RS) resource management for Layer 1 / Layer 2 trigger mobility (LTM) measurements.BACKGROUND
[0003] Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) . Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM) . A wireless multiple-access communications system may include one or more base stations, each supporting wireless communication for communication devices, which may be known as user equipment (UE) .SUMMARY
[0004] The systems, methods, and devices of this disclosure each have several innovative aspects, no single one of which is solely responsible for the desirable attributes disclosed herein.
[0005] A method for wireless communications by a user equipment (UE) is described. The method may include receiving a first control message indicative of first configuration information associated with channel state information (CSI) reporting for Layer 1 / Layer 2 triggered mobility (LTM) , where the first configuration information is indicative of second configuration information associated with one or more CSI-reference signal (CSI-RS) resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and a semi-persistent (SP) resource type, and where the one or more CSI-RS resources are associated with a second resource type for transmission configuration indicator (TCI) state management and performing one or more CSI measurements for LTM in accordance with the first configuration information.
[0006] A UE for wireless communications is described. The UE may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the UE to receive a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and an SP resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management and perform one or more CSI measurements for LTM in accordance with the first configuration information.
[0007] Another UE for wireless communications is described. The UE may include means for receiving a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and an SP resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management and means for performing one or more CSI measurements for LTM in accordance with the first configuration information.
[0008] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to receive a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and an SP resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management and perform one or more CSI measurements for LTM in accordance with the first configuration information.
[0009] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the first configuration information includes an indication of the first resource type and the second resource type may be the same as the first resource type based on the second configuration information failing to include an indication of the second resource type.
[0010] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the first configuration information includes an indication of the first resource type and the second configuration information includes an indication of the second resource type.
[0011] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, performing one or more CSI measurements in accordance with the first configuration information may include operations, features, means, or instructions for performing the one or more CSI measurements in accordance with the first resource type based on the first resource type being associated with a higher priority than the second resource type.
[0012] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for performing the one or more CSI measurements in accordance with the first resource type, where the first resource type may be the periodic resource type based on the second resource type being the periodic resource type.
[0013] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the first configuration information being indicative of the first resource type may be based on the second configuration information including an indication of the second resource type, the first resource type and the second resource type may be a same resource type, and the same resource type may be a periodic resource type.
[0014] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the first configuration information includes an indication of the first resource type from the set of resource types including the aperiodic resource type and the SP resource type and the second configuration information includes an indication of the second resource type, the second resource type being a periodic resource type.
[0015] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the first configuration information being indicative of the first resource type may be based on the second configuration information including an indication of the first resource type.
[0016] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for performing the one or more CSI measurements in accordance with the first resource type based on the first resource type being associated with a higher priority than the second resource type.
[0017] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, performing one or more CSI measurements in accordance with the first configuration information may include operations, features, means, or instructions for performing the one or more CSI measurements in accordance with the first resource type, where the first resource type may be the aperiodic resource type or the SP resource type based on the second resource type being a periodic resource type.
[0018] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the set of resource types further includes a periodic resource type.
[0019] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the one or more CSI-RS resources may be associated with a CSI-RS resource set.
[0020] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the first configuration information may be further indicative of any combination of a CSI resource configuration identifier (ID) , one or more CSI synchronization signal block (SSB) resources, and one or more LTM candidate IDs.
[0021] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a second control message that activates or deactivates the CSI reporting for LTM, where the second control message may be indicative of at least one LTM candidate ID, one or more first SP CSI-RS resources, and one or more first TCI states associated with the one or more first SP CSI-RS resources, and where performing the one or more CSI measurements for LTM in accordance with the first configuration information may be based on receiving the second control message activating the CSI reporting for LTM.
[0022] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the second control message further includes an LTM indicator, the LTM indicator indicating that the second control message may be associated with the CSI reporting for LTM.
[0023] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the second control message further includes a logical channel ID and the second control message may be associated with CSI reporting based on the logical channel ID.
[0024] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, both the one or more first SP CSI-RS resources and the one or more first TCI states may be associated with a first configuration for first LTM candidate of a set of LTM candidates, the second control message may be further indicative of one or more second SP CSI-RS resources and one or more second TCI states associated with the one or more second SP CSI-RS resources, and both the one or more second SP CSI-RS resources and the one or more second TCI states may be associated with a second configuration for second LTM candidate of the set of LTM candidates.
[0025] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the second control message includes a first field indicating a last octet associated with the first configuration.
[0026] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the one or more first SP CSI-RS resources may be associated with a first SP CSI-RS resource set and the second control message may be indicative of the one or more first SP CSI-RS resources based on the second control message indicating a first SP CSI-RS resource set ID associated with the first SP CSI-RS resource set.
[0027] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the second control message indicates each of the one or more first SP CSI-RS resources via a respective SP CSI-RS resource ID and each of the one or more first SP CSI-RS resources may be associated with a respective first TCI state of the one or more first TCI states.
[0028] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the second control message may be indicative of a set of multiple LTM candidate IDs including the at least one LTM candidate ID and the second control message may be indicative of a set of multiple LTM candidate IDs based on the second control message including an ID associated with the first configuration information.
[0029] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a third control message indicative of third configuration information, where the third configuration information may be indicative of a serving cell ID, an index associated with an aperiodic trigger state, a first quantity of one or more first aperiodic CSI-RS resources, and the one or more first aperiodic CSI-RS resources.
[0030] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the third control message may be indicative of a first LTM candidate ID associated with both the first quantity of one or more first aperiodic CSI-RS resources and the one or more first aperiodic CSI-RS resources and the third control message may be further indicative a second quantity of one or more second aperiodic CSI-RS resources, the one or more second aperiodic CSI-RS resources, and a second LTM candidate ID associated with both the second quantity of one or more first aperiodic CSI-RS resources and the one or more second aperiodic CSI-RS resources.
[0031] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the one or more first aperiodic CSI-RS resources may be associated with one or more first aperiodic CSI-RS resource sets.
[0032] Some examples of the method, UEs, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving a fourth control message indicative of third configuration information, where the third configuration information may be indicative of an LTM candidate ID, one or more aperiodic CSI-RS resources, and one or more TCI states.
[0033] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, the one or more aperiodic CSI-RS resources may be associated with one or more aperiodic CSI-RS resource sets and each of the one or more aperiodic CSI-RS resource sets may be associated with a respective subset of the one or more TCI states.
[0034] In some examples of the method, UEs, and non-transitory computer-readable medium described herein, each of the one or more aperiodic CSI-RS resources may be associated with a respective subset of the one or more TCI states.
[0035] A method for wireless communications by a network entity is described. The method may include transmitting a first control message indicative of first configuration information associated with CSI reporting for LTM , where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and an SP resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management and transmitting one or more CSI-RS for LTM in accordance with the first configuration information.
[0036] A network entity for wireless communications is described. The network entity may include one or more memories storing processor executable code, and one or more processors coupled with the one or more memories. The one or more processors may individually or collectively be operable to execute the code to cause the network entity to transmit a first control message indicative of first configuration information associated with CSI reporting for LTM , where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and an SP resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management and transmit one or more CSI-RS for LTM in accordance with the first configuration information.
[0037] Another network entity for wireless communications is described. The network entity may include means for transmitting a first control message indicative of first configuration information associated with CSI reporting for LTM , where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and an SP resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management and means for transmitting one or more CSI-RS for LTM in accordance with the first configuration information.
[0038] A non-transitory computer-readable medium storing code for wireless communications is described. The code may include instructions executable by one or more processors to transmit a first control message indicative of first configuration information associated with CSI reporting for LTM , where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and an SP resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management and transmit one or more CSI-RS for LTM in accordance with the first configuration information.
[0039] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the first configuration information includes an indication of the first resource type and the second resource type may be the same as the first resource type based on the second configuration information failing to include an indication of the second resource type.
[0040] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the first configuration information includes an indication of the first resource type and the second configuration information includes an indication of the second resource type.
[0041] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, transmitting the one or more CSI-RS in accordance with the first configuration information may include operations, features, means, or instructions for transmitting the one or more CSI-RS in accordance with the first resource type based on the first resource type being associated with a higher priority than the second resource type.
[0042] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for transmitting the one or more CSI-RS in accordance with the first resource type, where the first resource type may be the periodic resource type based on the second resource type being the periodic resource type.
[0043] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the first configuration information being indicative of the first resource type may be based on the second configuration information including an indication of the second resource type, the first resource type and the second resource type may be a same resource type, and the same resource type may be a periodic resource type.
[0044] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the first configuration information includes an indication of the first resource type from the set of resource types including the aperiodic resource type and the SP resource type and the second configuration information includes an indication of the second resource type, the second resource type being a periodic resource type.
[0045] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the first configuration information being indicative of the first resource type may be based on the second configuration information including an indication of the first resource type.
[0046] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, and the method, apparatuses, and non-transitory computer-readable medium may include further operations, features, means, or instructions for transmitting the one or more CSI-RS in accordance with the first resource type based on the first resource type being associated with a higher priority than the second resource type.
[0047] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, transmitting the one or more CSI-RS in accordance with the first configuration information may include operations, features, means, or instructions for transmitting the one or more CSI-RS in accordance with the first resource type, where the first resource type may be the aperiodic resource type or the SP resource type based on the second resource type being a periodic resource type.
[0048] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the set of resource types further includes a periodic resource type.
[0049] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the one or more CSI-RS resources may be associated with a CSI-RS resource set.
[0050] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the first configuration information may be further indicative of any combination of a CSI resource configuration ID, one or more CSI SSB resources, and one or more LTM candidate IDs.
[0051] Some examples of the method, network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a second control message that activates or deactivates the CSI reporting for LTM, where the second control message may be indicative of at least one LTM candidate ID, one or more first SP CSI-RS resources, and one or more first TCI states associated with the one or more first SP CSI-RS resources, and where transmitting the one or more CSI-RS in accordance with the first configuration information may be based on receiving the second control message activating the CSI reporting for LTM.
[0052] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the second control message further includes an LTM indicator, the LTM indicator indicating that the second control message may be associated with the CSI reporting for LTM.
[0053] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the second control message further includes a logical channel ID (LCID) and the second control message may be associated with CSI reporting based on the LCID.
[0054] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, both the one or more first SP CSI-RS resources and the one or more first TCI states may be associated with a first configuration for first LTM candidate of a set of LTM candidates, the second control message may be further indicative of one or more second SP CSI-RS resources and one or more second TCI states associated with the one or more second SP CSI-RS resources, and both the one or more second SP CSI-RS resources and the one or more second TCI states may be associated with a second configuration for second LTM candidate of the set of LTM candidates.
[0055] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the second control message includes a first field indicating a last octet associated with the first configuration.
[0056] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the one or more first SP CSI-RS resources may be associated with a first SP CSI-RS resource set and the second control message may be indicative of the one or more first SP CSI-RS resources based on the second control message indicating a first SP CSI-RS resource set ID associated with the first SP CSI-RS resource set.
[0057] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the second control message indicates each of the one or more first SP CSI-RS resources via a respective SP CSI-RS resource ID and each of the one or more first SP CSI-RS resources may be associated with a respective first TCI state of the one or more first TCI states.
[0058] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the second control message may be indicative of a set of multiple LTM candidate IDs including the at least one LTM candidate ID and the second control message may be indicative of a set of multiple LTM candidate IDs based on the second control message including an ID associated with the first configuration information.
[0059] Some examples of the method, network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a third control message indicative of third configuration information, where the third configuration information may be indicative of a serving cell ID, an index associated with an aperiodic trigger state, a first quantity of one or more first aperiodic CSI-RS resources, and the one or more first aperiodic CSI-RS resources.
[0060] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the third control message may be indicative of a first LTM candidate ID associated with both the first quantity of one or more first aperiodic CSI-RS resources and the one or more first aperiodic CSI-RS resources and the third control message may be further indicative a second quantity of one or more second aperiodic CSI-RS resources, the one or more second aperiodic CSI-RS resources, and a second LTM candidate ID associated with both the second quantity of one or more first aperiodic CSI-RS resources and the one or more second aperiodic CSI-RS resources.
[0061] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the one or more first aperiodic CSI-RS resources may be associated with one or more first aperiodic CSI-RS resource sets.
[0062] Some examples of the method, network entities, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting a fourth control message indicative of third configuration information, where the third configuration information may be indicative of an LTM candidate ID, one or more aperiodic CSI-RS resources, and one or more TCI states.
[0063] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, the one or more aperiodic CSI-RS resources may be associated with one or more aperiodic CSI-RS resource sets and each of the one or more aperiodic CSI-RS resource sets may be associated with a respective subset of the one or more TCI states.
[0064] In some examples of the method, network entities, and non-transitory computer-readable medium described herein, each of the one or more aperiodic CSI-RS resources may be associated with a respective subset of the one or more TCI states.
[0065] Details of one or more implementations of the subject matter described in this disclosure are set forth in the accompanying drawings and the description below. Other features, aspects, and advantages will become apparent from the description, the drawings, and the claims. Note that the relative dimensions of the following figures may not be drawn to scale.BRIEF DESCRIPTION OF THE DRAWINGS
[0066] FIG. 1 shows an example of a wireless communications system that supports techniques for channel state information-reference signal (CSI-RS) resource management for Layer 1 / Layer 2 trigger mobility (LTM) measurements in accordance with one or more aspects of the present disclosure.
[0067] FIG. 2 shows an example of a wireless communications system that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0068] FIGs. 3A and 3B show examples of control messages that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0069] FIG. 4 shows examples of control messages that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0070] FIG. 5 shows examples of control messages that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0071] FIG. 6 shows examples of control messages that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0072] FIG. 7 shows examples of control messages that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0073] FIG. 8 shows an example of a process flow that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0074] FIGs. 9 and 10 show block diagrams of devices that support techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0075] FIG. 11 shows a block diagram of a communications manager that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0076] FIG. 12 shows a diagram of a system including a device that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0077] FIGs. 13 and 14 show block diagrams of devices that support techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0078] FIG. 15 shows a block diagram of a communications manager that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0079] FIG. 16 shows a diagram of a system including a device that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.
[0080] FIGs. 17 and 18 show flowcharts illustrating methods that support techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure.DETAILED DESCRIPTION
[0081] Some wireless communications systems may support channel state information (CSI) reporting in which a wireless device, such as a user equipment (UE) , may perform one or more CSI measurements based on one or more CSI-reference signals (CSI-RS) and may transmit a report indicative of the one or more CSI measurements. To enable CSI reporting, the UE may receive one or more first control messages (e.g., radio resource control (RRC) messages) indicating configuration information associated with the CSI reporting. For example, the one or first more control messages may indicate one or more CSI-RS resources and a resource type associated with the one or more CSI-RS resources, such as aperiodic, periodic, or semi-persistent. Additionally, in some cases, the UE may support multiple trigger states, where each trigger state is associated with different configuration information.
[0082] In some cases, the UE may additionally support Layer 1 / Layer 2 triggered mobility (LTM) . In such cases, the UE may receive one or more second control messages indicative of one or more LTM CSI resources, however, the one or more CSI resources may be associated with transmission configuration indicator (TCI) state management rather than CSI reporting (e.g., LTM CSI reporting) . Additionally, the one or more LTM CSI resources may be associated with a periodic resource type due to the one or more LTM CSI resources being synchronization signal blocks (SSBs) (e.g., being one or more LTM CSI SSB resources) . However, in some cases, the UE may additionally be capable of supporting LTM CSI reporting of CSI-RS (e.g., rather than SSB) to improve beam measurements (e.g., as compared to SSB-based CSI reporting) . In such cases, the one or more second control messages may not support LTM CSI reporting of CSI-RS due to the one or more second control messages indicating LTM CSI SSB resources, indicating a periodic resource type (e.g., only a periodic resource type) , or both. In other words, the one or more second control messages may not enable a network entity to indicate to the UE one or more LTM CSI-RS resources, a resource type (e.g., periodic, aperiodic, or semi-persistent (SP) ) associated with the LTM CSI-RS resources, or both.
[0083] Accordingly, techniques described herein may define control signaling to enable a UE to support LTM CSI reporting based on CSI-RS (e.g., one or more LTM CSI-RS resources) . For example, in some cases, the UE may receive a control message indicative of first configuration information for LTM CSI reporting (e.g., LTM-CSI-ResourceConfig-r18 or LTM-CSI-ResourceConfig-r19) , where the first configuration information indicates at least second configuration information associated with one or more CSI-RS resources (e.g., LTM-NZP-CSI-RS-ResourceSet or LTM-NZP-CSI-RS-Resource) and a first resource type (e.g., resourceType-r19) associated with the one or more CSI-RS resources. In such cases, the first resource type may be from a set of resource types including any combination of an aperiodic resource type, a periodic resource type, and an SP resource type. Additionally, the one or more CSI-RS resources may be associated with a second resource type (e.g., resourceType-r18) for TCI state management. In some cases, the first configuration information may include an indication of the first resource type while, in some other cases, the second configuration may include the indication of the first resource type.
[0084] Additionally, in some cases, such as when the first resource type is the SP resource type, the UE may receive a second control messages (e.g., medium access control-control element (MAC-CE) message) that activates or deactivates the CSI reporting for LTM. In such cases, the second control message may indicate at least one LTM candidate identifier (ID) , one or more first SP CSI-RS resources (e.g., of the one or more CSI-RS resources indicated in the first control message) , and one or more first TCI states associated with the one or more first SP CSI-RS resources. In some examples, the one or more first SP CSI-RS resources may be associated with an SP CSI-RS resource set, such that the one or more first TCI states are associated with the SP CSI-RS resource set. Additionally, in some cases, the second control message may further indicate one or more second SP CSI-RS resource sets (e.g., each including one or more second SP CSI-RS resources) and one or more second TCI states associated with each of the one or more second SP CSI-RS resource sets. In some other examples, the one or more first SP CSI-RS resources may not be associated with an SP CSI-RS resource set. In such cases, each of the one or more SP CSI-RS resources may be associated with a respective first TCI state of the one or more first TCI states. Additionally, in some cases, the second control message may indicate multiple LTM candidate IDs via an LTM CSI resource configuration identifier. That is, the second control message may indicate the LTM CSI resource configuration identifier, where the LTM CSI resource configuration identifier is associated with the multiple LTM candidate IDs.
[0085] Aspects of the disclosure are initially described in the context of wireless communications systems. Aspects of the disclosure are then described in the context of control messages and a process flow. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, and flowcharts that relate to techniques for CSI-RS resource management for LTM measurements.
[0086] FIG. 1 shows an example of a wireless communications system 100 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The wireless communications system 100 may include one or more devices, such as one or more network devices (e.g., network entities 105) , one or more UEs 115, and a core network 130. In some examples, the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating in accordance with other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.
[0087] The network entities 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may include devices in different forms or having different capabilities. In various examples, a network entity 105 may be referred to as a network element, a mobility element, a radio access network (RAN) node, or network equipment, among other nomenclature. In some examples, network entities 105 and UEs 115 may wirelessly communicate via communication link (s) 125 (e.g., a radio frequency (RF) access link) . For example, a network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) over which the UEs 115 and the network entity 105 may establish the communication link (s) 125. The coverage area 110 may be an example of a geographic area over which a network entity 105 and a UE 115 may support the communication of signals according to one or more radio access technologies (RATs) .
[0088] The UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times. The UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communications with various types of devices in the wireless communications system 100 (e.g., other wireless communication devices, including UEs 115 or network entities 105) , as shown in FIG. 1.
[0089] As described herein, a node of the wireless communications system 100, which may be referred to as a network node, or a wireless node, may be a network entity 105 (e.g., any network entity described herein) , a UE 115 (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be a UE 115. As another example, a node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In yet other aspects of this example, the first, second, and third nodes may be different relative to these examples. Similarly, reference to a UE 115, network entity 105, apparatus, device, computing system, or the like may include disclosure of the UE 115, network entity 105, apparatus, device, computing system, or the like being a node. For example, disclosure that a UE 115 is configured to receive information from a network entity 105 also discloses that a first node is configured to receive information from a second node.
[0090] In some examples, network entities 105 may communicate with a core network 130, or with one another, or both. For example, network entities 105 may communicate with the core network 130 via backhaul communication link (s) 120 (e.g., in accordance with an S1, N2, N3, or other interface protocol) . In some examples, network entities 105 may communicate with one another via backhaul communication link (s) 120 (e.g., in accordance with an X2, Xn, or other interface protocol) either directly (e.g., directly between network entities 105) or indirectly (e.g., via the core network 130) . In some examples, network entities 105 may communicate with one another via a midhaul communication link 162 (e.g., in accordance with a midhaul interface protocol) or a fronthaul communication link 168 (e.g., in accordance with a fronthaul interface protocol) , or any combination thereof. The backhaul communication link (s) 120, midhaul communication links 162, or fronthaul communication links 168 may be or include one or more wired links (e.g., an electrical link, an optical fiber link) or one or more wireless links (e.g., a radio link, a wireless optical link) , among other examples or various combinations thereof. A UE 115 may communicate with the core network 130 via a communication link 155.
[0091] One or more of the network entities 105 or network equipment described herein may include or may be referred to as a base station 140 (e.g., a base transceiver station, a radio base station, an NR base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or giga-NodeB (either of which may be referred to as a gNB) , a 5G NB, a next-generation eNB (ng-eNB) , a Home NodeB, a Home eNodeB, or other suitable terminology) . In some examples, a network entity 105 (e.g., a base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture, which may be configured to utilize a protocol stack that is physically or logically integrated within one network entity (e.g., a network entity 105 or a single RAN node, such as a base station 140) .
[0092] In some examples, a network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) , which may be configured to utilize a protocol stack that is physically or logically distributed among multiple network entities (e.g., network entities 105) , such as an integrated access and backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) . For example, a network entity 105 may include one or more of a central unit (CU) , such as a CU 160, a distributed unit (DU) , such as a DU 165, a radio unit (RU) , such as an RU 170, a RAN Intelligent Controller (RIC) , such as an RIC 175 (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, such as an SMO system 180, or any combination thereof. An RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) . One or more components of the network entities 105 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 105 may be located in distributed locations (e.g., separate physical locations) . In some examples, one or more of the network entities 105 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU)) .
[0093] The split of functionality between a CU 160, a DU 165, and an RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, or any combinations thereof) are performed at a CU 160, a DU 165, or an RU 170. For example, a functional split of a protocol stack may be employed between a CU 160 and a DU 165 such that the CU 160 may support one or more layers of the protocol stack and the DU 165 may support one or more different layers of the protocol stack. In some examples, the CU 160 may host upper protocol layer (e.g., layer 3 (L3) , layer 2 (L2)) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaptation protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) . The CU 160 (e.g., one or more CUs) may be connected to a DU 165 (e.g., one or more DUs) or an RU 170 (e.g., one or more RUs) , or some combination thereof, and the DUs 165, RUs 170, or both may host lower protocol layers, such as layer 1 (L1) (e.g., physical (PHY) layer) or L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160. Additionally, or alternatively, a functional split of the protocol stack may be employed between a DU 165 and an RU 170 such that the DU 165 may support one or more layers of the protocol stack and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or multiple different cells (e.g., via one or multiple different RUs, such as an RU 170) . In some cases, a functional split between a CU 160 and a DU 165 or between a DU 165 and an RU 170 may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU 160, a DU 165, or an RU 170, while other functions of the protocol layer are performed by a different one of the CU 160, the DU 165, or the RU 170) . A CU 160 may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions. A CU 160 may be connected to a DU 165 via a midhaul communication link 162 (e.g., F1, F1-c, F1-u) , and a DU 165 may be connected to an RU 170 via a fronthaul communication link 168 (e.g., open fronthaul (FH) interface) . In some examples, a midhaul communication link 162 or a fronthaul communication link 168 may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities (e.g., one or more of the network entities 105) that are in communication via such communication links.
[0094] In some wireless communications systems (e.g., the wireless communications system 100) , infrastructure and spectral resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, providing an IAB network architecture (e.g., to a core network 130) . In some cases, in an IAB network, one or more of the network entities 105 (e.g., network entities 105 or IAB node (s) 104) may be partially controlled by each other. The IAB node (s) 104 may be referred to as a donor entity or an IAB donor. A DU 165 or an RU 170 may be partially controlled by a CU 160 associated with a network entity 105 or base station 140 (such as a donor network entity or a donor base station) . The one or more donor entities (e.g., IAB donors) may be in communication with one or more additional devices (e.g., IAB node (s) 104) via supported access and backhaul links (e.g., backhaul communication link (s) 120) . IAB node (s) 104 may include an IAB mobile termination (IAB-MT) controlled (e.g., scheduled) by one or more DUs (e.g., DUs 165) of a coupled IAB donor. An IAB-MT may be equipped with an independent set of antennas for relay of communications with UEs 115 or may share the same antennas (e.g., of an RU 170) of IAB node (s) 104 used for access via the DU 165 of the IAB node (s) 104 (e.g., referred to as virtual IAB-MT (vIAB-MT) ) . In some examples, the IAB node (s) 104 may include one or more DUs (e.g., DUs 165) that support communication links with additional entities (e.g., IAB node (s) 104, UEs 115) within the relay chain or configuration of the access network (e.g., downstream) . In such cases, one or more components of the disaggregated RAN architecture (e.g., the IAB node (s) 104 or components of the IAB node (s) 104) may be configured to operate according to the techniques described herein.
[0095] In the case of the techniques described herein applied in the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support test as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally, or alternatively, be performed by one or more components of the disaggregated RAN architecture (e.g., components such as an IAB node, a DU 165, a CU 160, an RU 170, an RIC 175, an SMO system 180) .
[0096] A UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples. A UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer. In some examples, a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, vehicles, or meters, among other examples.
[0097] The UEs 115 described herein may be able to communicate with various types of devices, such as UEs 115 that may sometimes operate as relays, as well as the network entities 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
[0098] The UEs 115 and the network entities 105 may wirelessly communicate with one another via the communication link (s) 125 (e.g., one or more access links) using resources associated with one or more carriers. The term “carrier” may refer to a set of RF spectrum resources having a defined PHY layer structure for supporting the communication link (s) 125. For example, a carrier used for the communication link (s) 125 may include a portion of an RF spectrum band (e.g., a bandwidth part (BWP)) that is operated according to one or more PHY layer channels for a given RAT (e.g., LTE, LTE-A, LTE-A Pro, NR) . Each PHY layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling. The wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation. A UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers. Communication between a network entity 105 and other devices may refer to communication between the devices and any portion (e.g., entity, sub-entity) of a network entity 105. For example, the terms “transmitting, ” “receiving, ” or “communicating, ” when referring to a network entity 105, may refer to any portion of a network entity 105 (e.g., a base station 140, a CU 160, a DU 165, a RU 170) of a RAN communicating with another device (e.g., directly or via one or more other network entities, such as one or more of the network entities 105) .
[0099] Signal waveforms transmitted via a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) . In a system employing MCM techniques, a resource element may refer to resources of one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The quantity of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) , such that a relatively higher quantity of resource elements (e.g., in a transmission duration) and a relatively higher order of a modulation scheme may correspond to a relatively higher rate of communication. A wireless communications resource may refer to a combination of an RF spectrum resource, a time resource, and a spatial resource (e.g., a spatial layer, a beam) , and the use of multiple spatial resources may increase the data rate or data integrity for communications with a UE 115.
[0100] The time intervals for the network entities 105 or the UEs 115 may be expressed in multiples of a basic time unit which may, for example, refer to a sampling period of Ts=1 / (Δfmax·Nf) seconds, for which Δfmax may represent a supported subcarrier spacing, and Nf may represent a supported discrete Fourier transform (DFT) size. Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) . Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
[0101] Each frame may include multiple consecutively-numbered subframes or slots, and each subframe or slot may have the same duration. In some examples, a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a quantity of slots. Alternatively, each frame may include a variable quantity of slots, and the quantity of slots may depend on subcarrier spacing. Each slot may include a quantity of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) . In some wireless communications systems, such as the wireless communications system 100, a slot may further be divided into multiple mini-slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., Nf) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
[0102] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) . In some examples, the TTI duration (e.g., a quantity of symbol periods in a TTI) may be variable. Additionally, or alternatively, the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)) .
[0103] Physical channels may be multiplexed for communication using a carrier according to various techniques. A physical control channel and a physical data channel may be multiplexed for signaling via a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET) ) for a physical control channel may be defined by a set of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115. For example, one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for a control channel candidate may refer to an amount of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size. Search space sets may include common search space sets configured for sending control information to UEs 115 (e.g., one or more UEs) or may include UE-specific search space sets for sending control information to a UE 115 (e.g., a specific UE) .
[0104] A network entity 105 may provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof. The term “cell” may refer to a logical communication entity used for communication with a network entity 105 (e.g., using a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID) , a virtual cell identifier (VCID) ) . In some examples, a cell also may refer to a coverage area 110 or a portion of a coverage area 110 (e.g., a sector) over which the logical communication entity operates. Such cells may range from smaller areas (e.g., a structure, a subset of structure) to larger areas depending on various factors such as the capabilities of the network entity 105. For example, a cell may be or include a building, a subset of a building, or exterior spaces between or overlapping with coverage areas 110, among other examples.
[0105] A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell. A small cell may be associated with a network entity 105 operating with lower power (e.g., a base station 140 operating with lower power) relative to a macro cell, and a small cell may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG) , the UEs 115 associated with users in a home or office) . A network entity 105 may support one or more cells and may also support communications via the one or more cells using one or multiple component carriers.
[0106] In some examples, a network entity 105 (e.g., a base station 140, an RU 170) may be movable and therefore provide communication coverage for a moving coverage area, such as the coverage area 110. In some examples, coverage areas 110 (e.g., different coverage areas) associated with different technologies may overlap, but the coverage areas 110 (e.g., different coverage areas) may be supported by the same network entity (e.g., a network entity 105) . In some other examples, overlapping coverage areas, such as a coverage area 110, associated with different technologies may be supported by different network entities (e.g., the network entities 105) . The wireless communications system 100 may include, for example, a heterogeneous network in which different types of the network entities 105 support communications for coverage areas 110 (e.g., different coverage areas) using the same or different RATs.
[0107] The wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof. For example, the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) . The UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions. Ultra-reliable communications may include private communication or group communication and may be supported by one or more services such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.
[0108] In some examples, a UE 115 may be configured to support communicating directly with other UEs (e.g., one or more of the UEs 115) via a device-to-device (D2D) communication link, such as a D2D communication link 135 (e.g., in accordance with a peer-to-peer (P2P) , D2D, or sidelink protocol) . In some examples, one or more UEs 115 of a group that are performing D2D communications may be within the coverage area 110 of a network entity 105 (e.g., a base station 140, an RU 170) , which may support aspects of such D2D communications being configured by (e.g., scheduled by) the network entity 105. In some examples, one or more UEs 115 of such a group may be outside the coverage area 110 of a network entity 105 or may be otherwise unable to or not configured to receive transmissions from a network entity 105. In some examples, groups of the UEs 115 communicating via D2D communications may support a one-to-many (1: M) system in which each UE 115 transmits to one or more of the UEs 115 in the group. In some examples, a network entity 105 may facilitate the scheduling of resources for D2D communications. In some other examples, D2D communications may be carried out between the UEs 115 without an involvement of a network entity 105.
[0109] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) . The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the network entities 105 (e.g., base stations 140) associated with the core network 130. User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions. The user plane entity may be connected to IP services 150 for one or more network operators. The IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
[0110] The wireless communications system 100 may operate using one or more frequency bands, which may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) . Generally, the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features, which may be referred to as clusters, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than one hundred kilometers) compared to communications using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
[0111] The wireless communications system 100 may utilize both licensed and unlicensed RF spectrum bands. For example, the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) RAT, or NR technology using an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band. While operating using unlicensed RF spectrum bands, devices such as the network entities 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating using a licensed band (e.g., LAA) . Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
[0112] A network entity 105 (e.g., a base station 140, an RU 170) or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of a network entity 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower. In some examples, antennas or antenna arrays associated with a network entity 105 may be located at diverse geographic locations. A network entity 105 may include an antenna array with a set of rows and columns of antenna ports that the network entity 105 may use to support beamforming of communications with a UE 115. Likewise, a UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally, or alternatively, an antenna panel may support RF beamforming for a signal transmitted via an antenna port.
[0113] Beamforming, which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device. Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating along particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference. The adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device. The adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
[0114] Some wireless communications systems, such as the wireless communications system 100, may support CSI reporting in which a wireless device, such as a UE 115, may perform one or more CSI measurements based on one or more CSI-RS and may transmit a report indicative of the one or more CSI measurements. To enable CSI reporting, the UE 115 may receive a first control message indicating first configuration information associated with CSI measurement (e.g., CSI-MeasConfig) , where first configuration information further indicates one or more CSI resource settings associated with one or more CSI resources (e.g., one or more CSI- ResourceConfig’s ) . In such cases, each CSI resource setting may further indicate a first identifier (e.g., csi-ResourceConfigId) , a resource set list (e.g., csi-RS-ResourceSetList indicating nzp-CSI-RS-SSB further indicating nzp-CSI-RS-ResourceSetList and csi-SSB-ResourceSetList) , a bandwidth part (BWP) identifier (e.g., bwp-Id) , a resource type (e.g., resourceType) , an extension (e.g., csi-SSB-ResourceSetListExt-r17) , or any combination thereof. That is, each CSI resource setting (e.g., CSI-ResourceConfig) may indicate a list of one or more CSI resource sets (e.g., indicated by a higher layer parameter csi-RS-ResourceSetList) , where the list indicates (e.g., includes references to) either or both of one or more CSI-RS resource sets (e.g., nzp-CSI-RS-ResourceSetList) and one or more SS / physical broadcast channel (PBCH) block sets (e.g., csi-SSB-ResourceSetList) or the list indicates one or more CSI-interference measurement (IM) resource sets. In such cases, each CSI resource setting may be located in a downlink BWP indicated by the BWP identifier, and all CSI resource settings associated with a CSI report setting (e.g., CSI-ReportConfig) may be associated with a same downlink BWP. In some examples, the resource type may be set to one of aperiodic, SP, or periodic.
[0115] Further, the UE 115 may receive a second control message (e.g., or receive via the first control message) indicating one or more CSI report settings (e.g., CSI-ReportConfig’s ) , where each of the one or more CSI report settings includes an indication of a second identifier (e.g., csi-ReportConfigId) and one or more resources for channel measurements (e.g., resourcesForChannelMeaurement) . In such cases, the one or more resources for channel measurement may be indicated in the second control message via indication of a first identifier associated with a respective CSI resource setting (e.g., a CSI-ResourceConfigId) .
[0116] In some cases, such as when the resource type is set to SP, the UE 115 may receive an additional control message, which may be referred to as an activation / deactivation control message (e.g., SP CSI-RS / IM activation / deactivation MAC-CE) , indicating an SP CSI-RS resource set ID (e.g., and optionally CSI-IM resource set ID) and one or more TCI state IDs associated with each SP CSI-RS resource (e.g., NZP-CSI-RS-Resource) within the SP CSI-RS resource set. For example, the activation / deactivation control message may include a first octet including a 1-bit activation / deactivation field, a 5-bit serving cell ID field, and a 2-bit BWP ID field, a second octet including a reserved bit, a 1-bit CSI-IM information field (e.g., indicating presence of CSI-IM resources) , and a first 6-bit SP CSI-RS resource set ID field, a third octet including two reserved bits and a second 6-bit SP CSI-RS resource set ID field, and one or more additional octets each including a reserved bit and a 7-bit TCI state ID field.
[0117] Additionally, or alternatively, the UE 115 may support one or more aperiodic CSI trigger states (e.g., CSI-AperiodicTriggerState) . For example, 128 aperiodic CSI trigger states may be shared between non-LTM aperiodic CSI and LTM aperiodic CSI. In such cases, each aperiodic CSI trigger state may be associated with up to 16 CSI-associated report configuration information (e.g., CSI-AssociatedReportConfigInfo) , where each CSI-associated report configuration information indicates a report configuration ID (e.g., reportConfigId) , a resource set ID (e.g., resourceSet) and one or more TCI states to be associated with one or more CSI-RS resources associated with the resource set ID (E. g., qcl-info indicating one or more TCI-StateId’s ) . In such cases, configuration of the aperiodic CSI trigger states (e.g., RRC configuration) may be set (e.g., final) and may not be updated at a later time (e.g., after configuration) . However, down-selection of up to a quantity of trigger states (e.g., 64 trigger states) and corresponding triggering of aperiodic CSI reporting may be supported.
[0118] In some cases, a UE 115 may support LTM CSI reporting. In such cases, the UE 115 may receive a third control message indicative of one or more LTM CSI report settings (e.g., LTM-CSI-ReportConfig-r18) , where each of the one or more LTM CSI report settings indicates a third identifier (e.g., LTM-CSI-Report-ConfigId-r18) and one or more resources for LTM CSI reporting (e.g., ltm-CSI-ResourceConfigToAddModList-r18) . In such cases, the one or more resources for LTM CSI reporting may be indicated via one or more LTM CSI resource settings (e.g., LTM-CSI-ResourceConfig-r18) , where each LTM CSI resource setting indicates a fourth identifier (e.g., ltm-CSI-ResourceConfigId-r18) and a LTM resource set list (e.g., ltm-CSI-SSB-ResourceSet-r18) , where the LTM resource set list indicates one or more LTM resources (e.g., ltm-CSI-SSB-ResourceList-r18) and an LTM candidate ID list (e.g., ltm-CandidateIdList-r18) . In such cases, each LTM CSI resource setting may not indicate a resource type. That is, a measurement reference signal source for LTM CSI reporting may be SSB (e.g., only SSB) , which may be periodic.
[0119] The LTM resource set list for LTM CSI reporting (e.g., ltm-CSI-SSB-ResourceSet-r18) may be different than the resource set list for non-LTM CSI reporting (e.g., CSI-SSB-ResourceSet) based on the resource set list for non-LTM CSI reporting being associated with (e.g., indicating) a resource set list identifier (e.g., CSI-SSB-ResourceSetId) , whereas the LTM resource set list for LTM CSI reporting may not be associated with an LTM resource set list identifier. Additionally, or alternatively, indices associated with SSBs (e.g., SSB-Index) may be flatted across LTM candidate IDs (e.g., multiple candidate cells’S SBs may be supported) .
[0120] Additionally, in some cases (e.g., intra-CU mast cell group (MCG) / secondary cell group (SCG) LTM and inter-CU MCG / SCG LTM) , the UE 115 may additionally be capable of supporting LTM CSI reporting of CSI-RS (e.g., rather than SSB) to improve beam measurements (e.g., as compared to SSB-based CSI reporting) . That is, the UE 115 may support CSI-RS measurement for LTM procedures and CSI-RS-based beam management (e.g., and other physical layer operations on candidate cells before LTM) . However, in such cases, conventional control signaling (e.g., LTM-CSI-ResourceConfig-r18 and NZP-CSI-RS-ResourceSet) may not support LTM CSI-RS-based CSI reporting due to the conventional control signaling, in some cases, failing to indicate a resource type (e.g., LTM-CSI-ResourceConfig-r18 may not include a resourceType) and, in some other cases, having a resource type (e.g., resourceType-r18) , which may be set to periodic, for TCI state management (e.g., not for CSI reporting) . Additionally, re-using the resource type for TCI state management for LTM CSI-RS-based CSI reporting may result in overhead of CSI-RS transmissions exceeding a threshold (e.g., too significant) . Additionally, or alternatively, defining multiple aperiodic CSI trigger states to cover different combinations of CSI-RS from multiple LTM candidate cells may be inefficient and may result in increases in control signaling (e.g., RRC message) overhead.
[0121] Thus, to enable LTM CSI-RS-based CSI reporting, the wireless communications system 100 (e.g., wireless devices of the wireless communications system 100) may support control signaling to enable a UE 115 to support LTM CSI reporting based on CSI-RS (e.g., one or more LTM CSI-RS resources) . For example, in some cases, the UE 115 may receive a control message indicative of first configuration information for LTM CSI reporting (e.g., LTM-CSI-ResourceConfig-r18 or LTM-CSI-ResourceConfig-r19) , where the first configuration information indicates at least second configuration information associated with one or more CSI-RS resources (e.g., LTM-NZP-CSI-RS-ResourceSet or LTM-NZP-CSI-RS-Resource) and a first resource type (e.g., resourceType-r19) associated with the one or more CSI-RS resources. In such cases, the first resource type may be from a set of resource types including any combination of an aperiodic resource type, a periodic resource type, and an SP resource type. Additionally, the one or more CSI-RS resources may be associated with a second resource type (e.g., resourceType-r18) for TCI state management. In some cases, the first configuration information may include an indication of the first resource type while, in some other cases, the second configuration may include the indication of the first resource type.
[0122] Additionally, in some cases, such as when the first resource type is the SP resource type, the UE 115 may receive a second control messages (e.g., MA-CE message) that activates or deactivates the CSI reporting for LTM. In such cases, the second control message may indicate at least one LTM ID, one or more first SP CSI-RS resources (e.g., of the one or more CSI-RS resources indicated in the first control message) , and one or more first TCI states associated with the one or more first SP CSI-RS resources. In some examples, the one or more first SP CSI-RS resources may be associated with an SP CSI-RS resource set, such that the one or more first TCI states are associated with the SP CSI-RS resource set. Additionally, in some cases, the second control message may further indicate one or more second SP CSI-RS resource sets (e.g., each including one or more second SP CSI-RS resources) and one or more second TCI states associated with each of the one or more second SP CSI-RS resource sets. In some other examples, the one or more first SP CSI-RS resources may not be associated with an SP CSI-RS resource set. In such cases, each of the one or more SP CSI-RS resources may be associated with a respective first TCI state of the one or more first TCI states. Additionally, in some cases, the second control message may indicate multiple LTM candidate IDs via an LTM CSI resource configuration identifier. That is, the second control message may indicate the LTM CSI resource configuration identifier, where the LTM CSI resource configuration identifier is associated with the multiple LTM candidate IDs.
[0123] FIG. 2 shows an example of a wireless communications system 200 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. In some cases, the wireless communications system 200 may implement or be implemented by aspects of the wireless communications system 100. For example, the wireless communications system 200 may include one or more UEs 115 (e.g., a UE 215) and one or more network entities 105 (e.g., a network entity 205) , which may be examples of the corresponding devices as described herein.
[0124] In some cases, to support LTM CSI-RS-based CSI reporting (e.g., LTM CSI reporting using CSI-RS measurments) , wireless devices of the wireless communications system 200, such as the UE 215 and the network entity 205, may support communication of LTM CSI resource configurations 220. In some cases, an LTM CSI resource configurations 220, such as an LTM CSI resource configurations 220-a (e.g., LTM-CSI-ResourceConfig-r18) or an LTM CSI resource configuration 220-b (e.g., LTM-CSI-ResourceConfig-r19) , may include a resource type information element (IE) 240 (e.g., a new resource type parameter, resourceType-r19) which may indicate a first resource type associated with LTM CSI-RS-based CSI reporting.
[0125] For example, in some cases, the UE 215 may receive a control message 210 indicating the LTM CSI resource configuration 220-a, where the LTM CSI resource configuration 220-a may indicate an LTM CSI resource configuration ID IE 225-a, an LTM CSI SSB resource set IE 230-a, an LTM NZP-CSI-RS resource set IE 235-a, and a resource type IE 240-a, where the resource type IE 240-a is associated with LTM CSI-RS-based CSI reporting and indicates the first resource type associated with LTM CSI-RS-based CSI reporting. In some examples, the first resource type may be from a first set of resource types including a periodic resource type, an SP resource type, and a aperiodic resource type. In some other cases, the UE 215 may receive the control message 210 indicating the LTM CSI resource configuration 220-b, where the LTM CSI resource configuration 220-b indicates an LTM CSI resource configuration ID IE 225-b, an LTM candidate ID IE 250-a, an LTM CSI SSB resource IE 255-a (e.g., or LTM CSI SSB resource set IE) , an LTM NZP-CSI-RS resource IE 260-a (e.g., or LTM NZP-CSI-RS resource set IE) , and a resource type IE 240-b, where the resource type IE 240-a is associated with LTM CSI-RS-based CSI reporting and indicates the first resource type associated with LTM CSI-RS-based CSI reporting. In some cases, the first resource type may be from the first set of resource types including the periodic resource type, the SP resource type, and the aperiodic resource type.
[0126] In some cases, the LTM NZP-CSI-RS resource set IE 235-a may include an indication of a resource type IE 245-a, which may indicate a second resource type (e.g., periodic resource type) associated with TCI state management. When the resource type IE 245-a is not indicated via the LTM NZP-CSI-RS resource set IE 235-a (e.g., is not present) , the first resource type indicated via the resource type IE 240-a may be applied to the LTM NZP-CSI-RS resource set IE 235-a for TCI state management and LTM CSI-RS-based CSI reporting. In some cases, when the resource type IE 245-a is indicated via the LTM NZP-CSI-RS resource set IE 235-a (e.g., is present) , the first resource type indicated via the resource type IE 240-a may supersede the second (e.g., periodic) resource type indicated via the resource type IE 245-a. That is, the UE 215 may apply the first resource type indicated via the resource type IE 240-a to the LTM NZP-CSI-RS resource set IE 235-a for TCI state management and LTM CSI-RS-based CSI reporting based on the first resource type being associated with a higher priority than the second resource type indicated via the resource type IE 245-a. In some other cases when the resource type IE 245-a is indicated via the LTM NZP-CSI-RS resource set IE 235-a, the first resource type indicated via the resource type IE 240-a may be restricted to the periodic resource type such that the first resource type indicated via the resource type IE 240-and the second (e.g., periodic) resource type indicated via the resource type IE 245-a match (e.g., are the same) .
[0127] Similarly, the LTM NZP-CSI-RS resource IE 260-a may include an indication of a resource type IE 245-b (e.g., not depicted) , which may indicate the second resource type (e.g., periodic resource type) associated with TCI state management. When the resource type IE 245-b is not indicated via the LTM the LTM NZP-CSI-RS resource IE 260-a, the first resource type indicated via the resource type IE 240-b may be applied to the LTM NZP-CSI-RS resource IE 260-a for TCI state management and LTM CSI-RS-based CSI reporting. In some cases, when the resource type IE 245-b is indicated via the LTM NZP-CSI-RS resource IE 260-a, the first resource type indicated via the resource type IE 240-b may supersede the second resource type indicated via the resource type IE 245-b. That is, the UE 215 may apply the first resource type indicated via the resource type IE 240-b to the LTM NZP-CSI-RS resource IE 260-a for TCI state management and LTM CSI-RS-based CSI reporting based on the first resource type being associated with a higher priority than the second resource type indicated via the resource type IE 245-b. In some other cases when the resource type IE 245-b is indicated via the LTM NZP-CSI-RS resource IE 260-a, the first resource type indicated via the resource type IE 240-b may be restricted to periodic such that the first resource type indicated via the resource type IE 240-b and the second resource type indicated via the resource type IE 245-b match.
[0128] In some cases, the resource type IE 240-a and the resource type IE 240-b may be restricted to indicating the first resource type from a second set of resource types including the SP resource type and the aperiodic resource type (e.g., not including the periodic resource type) . That is, when the first resource type associated with LTM CSI-RS-based CSI reporting is the periodic resource type, the LTM CSI resource configuration 220-a may not include the resource type IE 240-a or the LTM CSI resource configuration 220-b may not include the resource type IE 240-b, such that the second (e.g., periodic) resource type indicated via the resource type IE 245-a or the resource type IE 245-b, respectively, may be applied to the LTM NZP-CSI-RS resource set IE 235-a or the LTM NZP-CSI-RS resource IE 260-a, respectively, for TCI state management and LTM CSI-RS-based CSI reporting. Conversely, when the first resource type is the SP resource type or the aperiodic resource type, the LTM CSI resource configuration 220-a may include the resource type IE 240-a indicating the SP resource type or the aperiodic resource type for LTM CSI-RS-based CSI reporting, or the LTM CSI resource configuration 220-b may include the resource type IE 240-b indicating the SP resource type or the aperiodic resource type for LTM CSI-RS-based CSI reporting. In such cases, the UE 215 may not expect to receive an LTM CSI resource configuration 220 indicating both a resource type IE 240 and a resource type IE 245.
[0129] In some cases, the UE 215 may receive the control message 210 indicating an LTM CSI resource configuration 220-c, where the LTM CSI resource configuration 220-c includes an LTM NZP-CSI-RS resource set IE 235-b further indicating a resource type IE 240-c indicating the first resource type for LTM CSI-RS-based CSI reporting (e.g., the first resource type is not defined directly under the LTM CSI resource configuration 220-c) . That is, the LTM NZP-CSI-RS resource set IE 235-b may indicate an NZP CSI-RS resource set ID IE 265-a, an LTM NZP-CSI-RS resource list IE 270, a resource type IE 245-c associated with TCI state management, and the resource type IE 240-c associated with LTM CSI-RS-based CSI reporting. In some cases, the first resource type indicated via the resource type IE 240-c may be from the first set of resource types including the aperiodic resource type, the SP resource type, and the periodic resource type, and the first resource type may supersede the second resource type indicated via the resource type IE 245-c. That is, the UE 215 may apply the first resource type indicated via the resource type IE 240-c to the LTM NZP-CSI-RS resource set IE 235-b for TCI state management and LTM CSI-RS-based CSI reporting based on the first resource type indicated via the resource type IE 240-c being associated with a higher priority than the second resource type indicated via the resource type IE 245-c. In some other cases, the first resource type indicated via the resource type IE 240-c may be from the second set of resource types including the aperiodic resource type and the SP resource type. In such cases, the UE 215 may not expect to receive an LTM NZP CSI-RS resource set IE 235 indicating both a resource type IE 240 and a resource type IE 245.
[0130] As used herein, the term “resource IE” may identify a single resource, multiple resources, a set of resources, one or more sets of resources, or any combination thereof. Similarly, the term “resource set IE” may identify one or more resources (e.g., a set of one or more resources) , a set of resources, one or more sets of resources, or any combination thereof. Thus, it is contemplated herein that a resource IE may be interchangeable with a resource set IE, and visa-versa.
[0131] FIGs. 3A and 3B show examples of control messages 300 (e.g., a control message 300-a, a control message 300-b, a control message 300-c, and a control message 300-d) that support techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. In some cases, the control messages 300 may implement or be implemented by aspects of the wireless communications system 100, the wireless communications system 200, or both. For example, the control messages 300 may be implemented by one or more UEs 115 and one or more network entities 105, which may be examples of the corresponding devices as described herein.
[0132] In some cases, to support SP CSI-RS resource activation in LTM, wireless devices may support communication of control messages 300, where the control messages 300 may be MAC-CE messages. In some cases, a control message 300, such as the control message 300-a (e.g., of variable size) , may control (e.g., activate or deactivate) one SP NZP-CSI-RS resource set for one LTM candidate. For example, the control message 300-a may include an activation / deactivation bit 305-a (e.g., activation / deactivation field, indicating whether the SP NZP-CSI-RS resource set is activated or deactivated) , a first field (e.g., in a Octet 1, 3 bits) indicating an LTM candidate ID 310-a associated with the LTM candidate, an LTM indicator bit 320-a (e.g., LTM indicator field, a most significant bit of a Octet 2) , a second field (e.g., in a Octet 2, 6 bits) indicating an SP CSI-RS resource set ID 325-a associated with the SP NZP-CSI-RS resource set, one or more third fields (e.g., in Octet 4 through Octet N+4, 7 bits each) indicating one or more (e.g., N-1) TCI state IDs 330, such as a TCI state ID 330-a and a TCI state ID 330-b, and multiple reserved bits 315 (e.g., reserved fields) . In such cases, the LTM indicator bit 320-a may indicate (e.g., be set to true) “TRUE” which may further indicate that the first field is to be interpreted as the LTM candidate ID 310-a (e.g., rather than a serving cell ID) , two reserved bits 315 at an end of Octet 1 are to be interpreted as reserved (e.g., instead of a BWP ID field) , a second reserved bit 315 in Octet 2 is to be interpreted as reserved (e.g., instead of as an IM field) , and fields in Octet 3 are empty (e.g., absent) . Additionally, or alternatively, the control message 300-a may be associated with a logical channel ID (LCID) that indicates that the control message 300-a is for SP CSI-RS resource activation in LTM (e.g., rather than non-LTM) . In such cases, the LTM indicator bit 320-a may be omitted (e.g., treated as a reserved bit 315) .
[0133] In some cases, a control message 300, such as the control message 300-b (e.g., of variable size) , may control (e.g., activate or deactivate) multiple SP NZP-CSI-RS resource sets per LTM candidate. For example, the control message 300-b may include, at least, an activation / deactivation bit 305-b (e.g., activation / deactivation field, indicating whether the multiple SP NZP-CSI-RS resource sets are activated or deactivated) , a first field (e.g., in a Octet 1, 3 bits) indicating an LTM candidate ID 310-b associated with a first LTM candidate (e.g., of multiple LTM candidates) , a second field (e.g., in a Octet 2, 6 bits) indicating an SP CSI-RS resource set ID 325-b associated with a first SP NZP-CSI-RS resource set of the multiple SP NZP-CSI-RS resource sets, one or more third fields (e.g., in Octet 3 through Octet N+3, 7 bits each) indicating one or more (e.g., N-1) first TCI state IDs 330, such as a TCI state ID 330-c and a TCI state ID 330-d, associated with the SP CSI-RS resource set ID 325-b, and multiple reserved bits 315 (e.g., reserved fields) . The control message 300-b may further include one or more repetitions of Octet 2 through Octet N+3 for each additional SP CSI-RS resource set ID 325 associated with the LTM candidate ID 310-b (e.g., each additional SP NZP-CSI-RS resource set of the multiple SP NZP-CSI-RS resource sets to be activate or deactivated. For example, the control message 300-b may additionally include a fourth field (e.g., in a Octet N+4, 6 bits) indicating an SP CSI-RS resource set ID 325-c associated with a second SP NZP-CSI-RS resource set of the multiple SP NZP-CSI-RS resource sets, one or more fifth fields (e.g., in Octet N+5 through Octet N+M) indicating one or more (e.g., M) second TCI state IDs 330, such as a TCI state ID 330-e, associated with the SP CSI-RS resource set ID 325-c, and additional reserved bits 315.
[0134] Additionally, in some cases, the control message 300-b may further include one or more repetitions of at least Octet 1 through Octet 3 for each LTM candidate ID 310. That is, the control message 300-b may further indicate one or more additional LTM candidate IDs 310, one or more additional SP CSI-RS resource set IDs 325 associated with each of the one or more additional LTM candidate IDs 310, and one or more TCI state IDs 330 associated with each of the one or more additional SP CSI-RS resource set IDs 325. In such cases, the control message 300-b may include one or more end bits 3 (e.g., end fields, set to E=1) , such as an end bit 340-a, that indicates that an octet in which the end bit 340 is present is a last octet associated with an LTM candidate ID 310 (e.g., indicates that an LTM candidate cell’s configuration is complete with the octet in which the end bit 340 is present) . For example, the end bit 340-a may indicate that the Octet N+5 (e.g., N+M, where M=1) is a last octet associated with the LTM candidate ID 310-b. Thus, when the end bit 340-a is present (e.g., is set to 1) , a wireless device may assume that a new LTM candidate cell configuration (e.g., associated with an additional LTM candidate ID 310) begins in the next octet. As such (e.g., when end bits 340 are supported) , multiple LTM candidate cells (e.g., each associated with a respective LTM candidate ID 310) and respective SP NZP-CSI-RS resource set (s) (e.g., each associated with an SP CSI-RS resource set ID 325) may be controlled (e.g., activate or deactivate) with the control message 300-b (e.g., a single control message) .
[0135] In some cases, a control message 300, such as the control message 300-c (e.g., of variable size) , may control (e.g., activate or deactivate) one or more SP NZP-CSI-RS resources per LTM candidate. For example, the control message 300-c may include, at least, an activation / deactivation bit 305-c (e.g., activation / deactivation field, indicating whether the one or more SP NZP-CSI-RS resources are activated or deactivated) , a first field (e.g., in a Octet 1, 3 bits) indicating an LTM candidate ID 310-c associated with a first LTM candidate (e.g., of multiple LTM candidates) , a second field (e.g., in a Octet 2, 6 bits) indicating an SP CSI-RS resource ID 335-a associated with a first SP NZP-CSI-RS resource of the one or more SP NZP-CSI-RS resources, a third field (e.g., in Octet 3, 7 bits) indicating a TCI state ID 330-f associated with the SP CSI-RS resource ID 335-a, and multiple reserved bits 315 (e.g., reserved fields) . The control message 300-b may further include one or more (e.g., N) repetitions of Octet 2 and Octet 3 for each additional SP CSI-RS resource ID 335 associated with the LTM candidate ID 310-c (e.g., each additional SP NZP-CSI-RS resource of the one or more SP NZP-CSI-RS resources to be activate or deactivated) . For example, the control message 300-b may additionally include a fourth field (e.g., in a Octet 4, 6 bits) indicating an SP CSI-RS resource ID 335-b associated with a second SP NZP-CSI-RS resource of the one or more SP NZP-CSI-RS resources, a fifth field (e.g., in Octet 5, 7 bits) indicating a TCI state ID 330-g associated with the SP CSI-RS resource ID 335-b, a sixth field (e.g., in a Octet 2N+2, 6 bits) indicating an SP CSI-RS resource ID 335-c associated with a third SP NZP-CSI-RS resource of the one or more SP NZP-CSI-RS resources, a seventh (e.g., in Octet 2N+3, 7 bits) indicating a TCI state ID 330-h associated with the SP CSI-RS resource ID 335-c and additional reserved bits 315.
[0136] Additionally, in some cases, the control message 300-c may further include one or more repetitions of at least Octet 1 through Octet 3 for each LTM candidate ID 310. That is, the control message 300-c may further indicate one or more additional LTM candidate IDs 310, one or more additional SP CSI-RS resources IDs 335 associated with each of the one or more additional LTM candidate IDs 310, and a TCI state ID 330 associated with each of the one or more additional SP CSI-RS resource IDs 335. In such cases, the control message 300-c may include one or more end bits 340 (e.g., end field, set to E=1) , such as an end bit 340-b, that indicates that an octet in which the end bit 340 is present is a last octet associated with an LTM candidate ID 310 (e.g., indicates that an LTM candidate cell’s configuration is complete with the octet in which the end but 340 is present) . For example, the end bit 340-b may indicate that the Octet 2N+3 is a last octet associated with the LTM candidate ID 310-c. Thus, when the end bit 340-b is present (e.g., is set to 1) , a wireless device may assume that a new LTM candidate cell configuration (e.g., associated with an additional LTM candidate ID 310) begins in the next octet.
[0137] In some cases, a control message 300, such as the control message 300-d (e.g., of variable size) , may control (e.g., activate or deactivate) one or more SP NZP-CSI-RS resources per LTM CSI resource (e.g., for when flattened NZP CSI-RS resource IDs are provided with a list of LTM candidate IDs 310 under an LTM CSI resource IE, no NZP CSI-RS resource set ID is available for LTM CSI report purposes) . For example, the control message 300-d may include, at least, an activation / deactivation bit 305-d (e.g., activation / deactivation field, indicating whether the one or more SP NZP-CSI-RS resources are activated or deactivated) , a first field (e.g., in a Octet 1, 7 ) indicating an LTM CSI resource configuration ID 345 (e.g., associated with one or more LTM candidates, maxNrofLTM-CS-ResourceConfigurations-r18 = 112) , a second field (e.g., in a Octet 2, 6 bits) indicating an SP CSI-RS resource ID 335-d associated with a first SP NZP-CSI-RS resource of the one or more SP NZP-CSI-RS resources, a third field (e.g., in Octet 3, 7 bits) indicating a TCI state ID 330-i associated with the SP CSI-RS resource ID 335-d, and multiple reserved bits 315 (e.g., reserved fields) . The control message 300-d may further include one or more (e.g., N) repetitions of Octet 2 and Octet 3 for each additional SP CSI-RS resource ID 335 associated with the LTM CSI resource configuration ID 345 (e.g., each additional SP NZP-CSI-RS resource of the one or more SP NZP-CSI-RS resources to be activate or deactivated) . For example, the control message 300-d may additionally include a fourth field (e.g., in a Octet 4, 6 bits) indicating an SP CSI-RS resource ID 335-e associated with a second SP NZP-CSI-RS resource of the one or more SP NZP-CSI-RS resources, a fifth field (e.g., in Octet 5, 7 bits) indicating a TCI state ID 330-j associated with the SP CSI-RS resource ID 335-e, a sixth field (e.g., in a Octet 2N+2, 6 bits) indicating an SP CSI-RS resource ID 335-i associated with a third SP NZP-CSI-RS resource of the one or more SP NZP-CSI-RS resources, a seventh (e.g., in Octet 2N+3, 7 bits) indicating a TCI state ID 330-k associated with the SP CSI-RS resource ID 335-i, and additional reserved bits 315. In such cases, one or more LTM candidate IDs 310 may be obtained based on the LTM CSI resource configuration ID 345 and an NZP-CSI-RS resource ID.
[0138] FIG. 4 shows examples of control messages 400 (e.g., a control message 400-a and a control message 400-b) that support techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. In some cases, the control messages 400 may implement or be implemented by aspects of the wireless communications system 100, the wireless communications system 200, the control messages 300, or any combination thereof. For example, the control messages 400 may be implemented by one or more UEs 115 and one or more network entities 105, which may be examples of the corresponding devices as described herein.
[0139] In some cases, for aperiodic CSI-RS in LTM measurement, one or more NZP CSI-RS resources (e.g., or resource sets) may be down-selected (e.g., from RRC via MAC-CE) for dynamic reconfiguration based on a location of a UE 115, an LTM candidate cell’s availability, or both. For example, a control message 400, such as the control message 400-a (e.g., of variable size) , may support down-selection per candidate ID configuration. For example, the control message 400-a may include, at least, a first field (e.g., in Octet 1, 5 bits) indicating a serving cell ID 410-a, a second field (e.g., in Octet 2, 7 bits) indicating an aperiodic trigger state index 415-a, a third field (e.g., in Octet 3, 3 bits) indicating an LTM candidate ID 430-a, a fourth field (e.g., in Octet 3, 5 bits) indicating a quantity 420-a of aperiodic CSI-RS resources 425, one or more fifth fields (e.g., in Octet 4 and one or more additional octets, 4 bits each) each indicating an aperiodic CSI-RS resource ID 435 (e.g., absolute or ordinal index) associated with each aperiodic CSI-RS resources 425 of the quantity 420-a of aperiodic CSI-RS resources 425, such as an aperiodic CSI-RS resource ID 435-a, an aperiodic CSI-RS resource ID 435-b, and an aperiodic CSI-RS resource ID 435-c, and additional reserved bits 405 (e.g., reserved fields) . In some cases, the control message 400-b may indicate one or more additional LTM candidate IDs 430, a respective quantity 420 of aperiodic CSI-RS resources 425 associated with each of the one or more additional LTM candidate IDs 430, and respective aperiodic CSI-RS resource IDs 435 associated with each quantity 420 of aperiodic CSI-RS resources 425. For example, the control message 400-a may further include a sixth field (e.g., in Octet 6, 3 bits) indicating an LTM candidate ID 430-b, a seventh field (e.g., in Octet 6, 5 bits) indicating a quantity 420-b of aperiodic CSI-RS resources 425, one or more eighth fields (e.g., in Octet 7 and one or more additional octets, 4 bits each) each indicating an aperiodic CSI-RS resource ID 435 associated with each aperiodic CSI-RS resources 425 of the quantity 420-b of aperiodic CSI-RS resources 425, such as an aperiodic CSI-RS resource ID 435-d and an aperiodic CSI-RS resource ID 435-e, and additional reserved bits 405. In such cases, the control message 400-b may support the multiple LTM candidate IDs 430 (e.g., multiple LTM candidate ID configurations) based on explicitly indicating the quantities 420 of aperiodic CSI-RS resources 425.
[0140] In some other examples, a control message 400, such as the control message 400-b (e.g., of variable size) , may support down-selection across candidate ID configuration. For example, the control message 400-b may include, at least, a first field (e.g., in Octet 1, 5 bits) indicating a serving cell ID 410-b, a second field (e.g., in Octet 2, 7 bits) indicating an aperiodic trigger state index 415-b, a third field (e.g., in Octet 3, 7 bits) indicating a quantity 420-c of aperiodic CSI-RS resources 425, and one or more fifth fields (e.g., in Octet 4 and one or more additional octets, 7 bits each) each indicating an aperiodic CSI-RS resource ID 435 (e.g., absolute or ordinal index) associated with each aperiodic CSI-RS resources 425 of the quantity 420-c of aperiodic CSI-RS resources 425, such as an aperiodic CSI-RS resource ID 435-e, an aperiodic CSI-RS resource ID 435-f, and an aperiodic CSI-RS resource ID 435-g, and additional reserved bits 405 (e.g., reserved fields) . In such cases, aperiodic CSI-RS resource IDs 435 may be flattened.
[0141] In either example, the control message 400 (e.g., the control message 400-a, the control message 400-b) may include a serving cell ID 410 based on multiple serving cells aperiodic trigger states being associated with LTM trigger states. In some other cases, the control message 400 may omit the serving cell ID 410 based on one serving cell (e.g., only one serving cell) being associated with the LTM trigger states. Additionally, or alternatively, an aperiodic trigger state index 415 may be a global index (e.g., across non-LTM and LTM trigger states) or may be a specific index associated with LTM trigger states.
[0142] Though described in the context of quantities 420 of aperiodic CSI-RS resources 425 and aperiodic CSI-RS resource IDs 435, this is not to be regarded as a limitation of the present disclosure. In this regard, the control messages 400 may indicate quantities of aperiodic CSI-RS resource sets and, accordingly, aperiodic CSI-RS resource set IDs.
[0143] FIG. 5 shows examples of control messages 500 (e.g., a control message 500-a and a control message 500-b) that support techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. In some cases, the control messages 500 may implement or be implemented by aspects of the wireless communications system 100, the wireless communications system 200, the control messages 300, the control messages 400, or any combination thereof. For example, the control messages 500 may be implemented by one or more UEs 115 and one or more network entities 105, which may be examples of the corresponding devices as described herein.
[0144] In some cases, for aperiodic CSI-RS in LTM measurement, one or more TCI state IDs 520 may be dynamically configured (e.g., reconfigured) via a control message 500. For example, a control message 500 may either overwrite one or more preconfigured TCI states with new TCI states or may set one or more TCI states for one or more LTM aperiodic NZP-CSI-RS resources (e.g., NZP-CSI-RS resources in aperiodic CSI-RS do not have associated TCI states specified in RRC) . For example, in some cases (e.g., NZP-CSI-RS resource set ID case) , a control message 500-a (e.g., of variable size) may include a first field (e.g., in Octet 1, 3 bits) indicating an LTM candidate ID 510-a, a second field (e.g., in Octet 2, 6 bits) indicating an aperiodic CSI-RS resource set ID 515-a, one or more third fields (e.g., in Octet 3 and N additional Octets, 7 bits each) indicating one or more (e.g., N-1) TCI state IDs 520 associated with the aperiodic CSI-RS resource set ID 515-a, such as a TCI state ID 520-a and a TCI state 520-b, and additional reserved bits 505 (e.g., reserved fields) . In some cases, the control message 500-a may indicate one or more additional aperiodic CSI-RS resource sets IDs 515 and one or more respective TCI state IDs 520. For example, the control message 500-a may include a fourth field (e.g., in Octet N+4, 6 bits) indicating an aperiodic CSI-RS resource set ID 515-b, a fifth field (e.g., in Octet N+5, 7 bits) indicating a TCI state ID 520-c associated with the aperiodic CSI-RS resource set ID 515-b, and additional reserved bits 505. Additionally, in some cases, the control message 500-a may include an end bit 530-a (e.g., end field, set to 1) indicating an end to a configuration associated with the LTM candidate ID 510-a. Thus, the control message 500-a may further include additional fields indicating one or more additional configurations associated with one or more additional LTM candidate IDs 510 (e.g., one or more repetitions of the Octet 1 through the Octet N+5) .
[0145] In some other cases (e.g., NZP-CSI-RS resource ID case) , a control message 500-b (e.g., of variable size) may include a first field (e.g., in Octet 1, 3 bits) indicating an LTM candidate ID 510-b, a second field (e.g., in Octet 2, 6 bits) indicating an aperiodic CSI-RS resource ID 535-a, a third field (e.g., in Octet 3, 7 bits) indicating a TCI state ID 520-d associated with the aperiodic CSI-RS resource ID 535-a, and additional reserved bits 505 (e.g., reserved fields) . In some cases, the control message 500-b may indicate one or more (e.g., N-1) additional aperiodic CSI-RS resource IDs 535 and one or more respective TCI state IDs 520. For example, the control message 500-b may include a fourth field (e.g., in Octet 4, 6 bits) indicating an aperiodic CSI-RS resource ID 535-b, a fifth field (e.g., in Octet 5, 7 bits) indicating a TCI state ID 520-e associated with the aperiodic CSI-RS resource ID 535-b, a sixth field (e.g., in Octet 2N+2, 6 bits) indicating an aperiodic CSI-RS resource ID 535-c, a seventh field (e.g., in Octet 2N+3, 7 bits) indicating a TCI state ID 520-f associated with the aperiodic CSI-RS resource ID 535-c, and additional reserved bits 505. Additionally, in some cases, the control message 500-b may include an end bit 530-b (e.g., end field, set to 1) indicating an end to a configuration associated with the LTM candidate ID 510-b. Thus, the control message 500-b may further include additional fields indicating one or more additional configurations associated with one or more additional LTM candidate IDs 510 (e.g., one or more repetitions of the Octet 1 through the Octet 2N+3) .
[0146] FIG. 6 shows examples of control messages 600 (e.g., a control message 600-a and a control message 600-b) that support techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. In some cases, the control messages 600 may implement or be implemented by aspects of the wireless communications system 100, the wireless communications system 200, the control messages 300, the control messages 400, the control messages 500, or any combination thereof. For example, the control messages 600 may be implemented by one or more UEs 115 and one or more network entities 105, which may be examples of the corresponding devices as described herein.
[0147] In some cases, wireless devices may support a combination of a control message 400 and a control message 500. That is, a control message 600 may include both aperiodic CSI-RS resource IDs 635 (e.g., or aperiodic resource set IDs) and one or more corresponding TCI state IDs 640. For example, in some cases, such as depicted with reference to the control message 600-a, after each set of one or more aperiodic CSI-RS resource IDs 635, the control message 600-a may include one or more additional fields indicating a set of one or more TCI state IDs 640 associated with the respective set of one or more aperiodic CSI-RS resource IDs 635. That is, as described with reference to FIG. 4, the control message 600-a may include multiple fields indicating a serving cell ID 610-a, an aperiodic trigger state index 615-a, a quantity 620-a of aperiodic CSI-RS resources 625, an LTM candidate ID 630-a, an aperiodic CSI-RS resource ID 635-a, an aperiodic CSI-RS resource ID 635-b, an aperiodic CSI-RS resource ID 635-c, and additional reserved bits 605. Additionally, the control message 600-a may include a set of additional fields indicating a TCI state ID 640-a, a TCI state ID 640-b, and a TCI state 640-c (e.g., corresponding to the aperiodic CSI-RS resource IDs 635) . In some cases, the control message 600-a may indicate one or more additional LTM candidate IDs 630 (e.g., an LTM candidate ID 630-b) , a respective quantity 620 of aperiodic CSI-RS resources 625 associated with each of the one or more additional LTM candidate IDs (e.g., a quantity 620-b of aperiodic CSI-RS resources 625) , a respective set of aperiodic CSI-RS resource IDs 635 associated with each quantity 620 of aperiodic CSI-RS resources 625 (e.g., an aperiodic CSI-RS resource ID 635-d and an aperiodic CSI-RS resource ID 635-e) , a respective set of TCI state IDs 640 associated with each set of aperiodic CSI-RS resource IDs 635, and additional reserved bits 605.
[0148] In another example, as depicted with reference to the control message 600-b, each aperiodic CSI-RS resource ID 635 may be associated with a TCI state ID 640. That is, as described with reference to FIG. 5, the control message 600-b may include multiple fields indicating a serving cell ID 610-b, an aperiodic trigger state index 615-b, a quantity 620-c of aperiodic CSI-RS resources 625, an aperiodic CSI-RS resource ID 635-f, an aperiodic CSI-RS resource ID 635-g, and additional reserved bits 605. Additionally, the control message 600-a may include, in an octet after each octet indicating an aperiodic CSI-RS resource ID 635, a field indicating a TCI state ID 640 associated with the respective aperiodic CSI-RS resource ID 635. For example, the control message 600-b may indicate a TCI state ID 640-e associated with the aperiodic CSI-RS resource ID 635-f and may indicate TCI state ID 640-f associated with the aperiodic CSI-RS resource ID 635-g.
[0149] Though described in the context of aperiodic CSI-RS resources 625 and aperiodic CSI-RS resource IDs 635, this is not to be regarded as a limitation of the present disclosure. In this regard, the control messages 600 may indicate quantities of aperiodic CSI-RS resource sets and, accordingly, aperiodic CSI-RS resource set IDs. In such cases, the control messages 600 may further indicate one or more TCI state IDs 640 associated with each aperiodic CSI-RS resource sets (e.g., each aperiodic CSI-RS resource sets ID) .
[0150] FIG. 7 shows examples of control messages 700 (e.g., a control message 700-a and a control message 700-b) that support techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. In some cases, the control messages 700 may implement or be implemented by aspects of the wireless communications system 100, the wireless communications system 200, the control messages 300, the control messages 400, the control messages 500, the control messages 600, or any combination thereof. For example, the control messages 700 may be implemented by one or more UEs 115 and one or more network entities 105, which may be examples of the corresponding devices as described herein.
[0151] In some cases, wireless devices may support a combination of a control message 300 and a control message 500. That is, a control message 700 may include an semi-persistent / aperiodic (SP / A) indicator bit 715 (e.g., SP / A indicator field) that indicates whether CSI-RS resources indicated via the control message 700 are SP or aperiodic and, if they are SP, that an activation / deactivation bit 710 may be present in the control message 700. For example, as described with reference to FIGs. 3A, 3B, and 4, a control message 700-a may indicate an LTM candidate ID 720-a, one or more CSI-RS resource set IDs 725 (e.g., a CSI-RS resource set ID 725-a and a CSI-RS resource set ID 725-b) , one or more (e.g., N-1) TCI states 730 associated with each CSI resource set ID 725 of the one or more CSI-RS resource set IDs 725 (e.g., a TCI state ID 730-a and a TCI state ID 730-b associated with the CSI-RS resource set ID 725-a and a TCI state ID 730-c associated with the CSI-RS resource set ID 725-b) , an end bit 740-a (e.g., end field) , and additional reserved bits 705 (e.g., reserved fields) . Additionally, the control message 700-a may include an SP / A indicator bit 715-a that indicates whether the one or more CSI-RS resource set IDs 725 are associated with one or more SP CSI-RS resource sets or one or more aperiodic CSI-RS resource sets. Further, then the SP / A indicator bit 715-a indicates that the one or more CSI-RS resource set IDs 725 are associated with one or more SP CSI-RS resource sets, the control message 700-a may further include an activation / deactivation bit 710-a. Conversely, when the SP / A indicator bit 715-a indicates that the one or more CSI-RS resource set IDs 725 are associated with one or more aperiodic CSI-RS resource sets, a wireless device may treat the activation / deactivation bit 710-a as a reserved bit 705.
[0152] In another example, as described with reference to FIGs. 3A, 3B, and 4, a control message 700-b may indicate an LTM candidate ID 720-b, one or more (e.g., N-1) CSI-RS resource IDs 735 (e.g., a CSI-RS resource ID 735-a, a CSI-RS resource ID 735-b, and a CSI-RS resource ID 735-c) , a TCI state 730 associated with each CSI-RS resource ID 735 of the one or more CSI-RS resource IDs 735 (e.g., a TCI state ID 730-d associated with the CSI-RS resource ID 735-a, a TCI state ID 730-e associated with the CSI-RS resource ID 735-b, and a TCI state ID 730-f associated with the CSI-RS resource ID 735-c) , an end bit 740-b (e.g., end field) , and additional reserved bits 705 (e.g., reserved fields) . Additionally, the control message 700-b may include an SP / A indicator bit 715-b that indicates whether the one or more CSI-RS resource IDs 735 are associated with one or more SP CSI-RS resources or one or more aperiodic CSI-RS resources. Further, when the SP / A indicator bit 715-b indicates that the one or more CSI-RS resource IDs 735 are associated with one or more SP CSI-RS resources, the control message 700-b may further include an activation / deactivation bit 710-b. Conversely, when the SP / A indicator bit 715-b indicates that the one or more CSI-RS resource IDs 735 are associated with one or more aperiodic CSI-RS resources, a wireless device may treat the activation / deactivation bit 710-b as a reserved bit 705.
[0153] FIG. 8 shows an example of a process flow 800 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. In some cases, the process flow 800 may implement or be implemented by aspects of the wireless communications system 100, the wireless communications system 200, the control messages 300, the control messages 400, the control messages 500, the control messages 600, the control messages 700, or any combination thereof. For example, the process flow 800 may be implemented by one or more UEs 115 (e.g., a UE 815) and one or more network entities 105 (e.g., a network entity 805) , which may be examples of the corresponding devices as described herein. In the following description of the process flow 800, the operations between the UE 815 and the network entity 805 may be transmitted in a different order than the example order shown, or the operations performed by the UE 815 and the network entity 805 may be performed in different orders or at different times. Some operations may also be omitted from the process flow 800, and other operations may be added to the process flow 800.
[0154] At 820, the UE 815 may receive a first control message (e.g., RRC message) indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type (e.g., and optionally a periodic resource type) . The one or more CSI-RS resources may additionally be associated with a second resource type for TCI state management. In some cases, the one or more CSI-RS resources may be associated with a CSI-RS resource set. Additionally, or alternatively, the first configuration information may further be indicative of any combination of a CSI resource configuration ID, one or more CSI SSB resources, and one or more LTM candidate IDs.
[0155] In some cases, the first configuration information may include an indication of the first resource type, and the second resource type may be the same as the first resource type based on the second configuration information failing to include an indication of the second resource type.
[0156] In some other cases, the first configuration information may include the indication of the first resource type, and the second resource type may include the indication of the second resource type. In such cases, the set of resource types may further include the periodic resource type.
[0157] In some other cases, the first configuration information being indicative of the first resource type may be based on the second configuration information including the indication of the second resource type, where the first resource type and the second resource type are a same resource type (e.g., the periodic resource type) . In some other cases, the first configuration information being indicative of the first resource type may be based on the second configuration information including the indication of the first resource type.
[0158] In some examples, the first configuration information may include the indication of the first resource type from the set of resource types including the aperiodic resource type and the SP resource type. In such cases, the second configuration information may include an indication of the second resource type, where the second resource type is a periodic resource type.
[0159] At 825, the UE 815 may receive a second control message (e.g., MAC-CE message) that activates or deactivates the CSI reporting for LTM, where the second control message is indicative of at least one LTM candidate ID, one or more first SP CSI-RS resources, and one or more first TCI states associated with the one or more first SP CSI-RS resources. In some cases, the second control message may further include an LCID, where the second control message is associated with CSI reporting for LTM based on the LCID.
[0160] In some cases, both the one or more first SP CSI-RS resources and the one or more first TCI states may be associated with a first configuration for a first LTM candidate of a set of LTM candidates. In such cases, the second control message may further be indicative of one or more SP CSI-RS resources and one or more second TCI states associated with the one or more second SP CSI-RS resources, and both the one or more second SP CSI-RS resources and the one or more second TCI states may be associated with a second configuration for a second LTM candidate of the set of LTM candidates. In such cases, the second control message may include a first field (e.g., end field) indicating a last octet associated with the first configuration.
[0161] In some cases, the one or more first semi-persistent CSI-RS resources may be associated with a first SP CSI-RS resource set, and the second control message may be indicative of the one or more first SP CSI-RS resources based on the second control message indicating a first SP CSI-RS resource set ID associated with the first SP CSI-RS resource set. In some other cases, the second control message may indicate each of the one or more first SP CSI-RS resources via a respective SP CSI-RS resource ID, and each of the one or more SP CSI-RS resources may be associated with a respective first TCI state of the one or more first TCI states.
[0162] Additionally, or alternatively, the second control message may be indicative of multiple LTM candidate IDs including the at least one LTM candidate ID, and the second control message may be indicative of multiple LTM candidate IDs based on the second control message including an ID associated with the first configuration information.
[0163] At 830, the network entity 805 may transmit one or more CSI-RS for LTM in accordance with the first configuration information and, at 835, the UE 815 may perform one or more CSI measurements for LTM in accordance with the first configuration information. In some cases, the UE 815 may perform the one or more CSI measurements in accordance with the first resource type based on the first resource type being associated with a higher priority than the second resource type. In some other cases, the UE 815 may perform the one or more CSI measurements in accordance with the first resource type, where the first resource type is the periodic resource type based on the second resource type being the periodic resource type. In some other examples, the UE 815 may perform the one or more CSI measurements in accordance with the first resource type, where the first resource type is the periodic resource type based on the second resource type being the periodic resource type.
[0164] Additionally, or alternatively, the UE 815 may perform the one or more CSI measurements for LTM in accordance with the first configuration information based on receiving the second control message activating the CSI reporting for LTM.
[0165] At 840, the UE 815 may transmit a CSI report based on the one or more CSI measurements.
[0166] At 845, the UE 815 may receive a third control message (e.g., MAC-CE message) indicative of third configuration information, where the third configuration information is indicative of a serving cell ID, an index associated with an aperiodic trigger state, a first quantity of one or more first aperiodic CSI-RS resources, and the one or more first aperiodic CSI-RS resources. In some cases, the one or more first aperiodic CSI-RS resources may be associated with one or more first aperiodic CSI-RS resource sets. Additionally, or alternatively, the third control message may be indicative of a first LTM candidate ID associated with both the first quantity of one or more first aperiodic CSI-RS resources and the one or more first aperiodic CSI-RS resources. In such cases, the third control message may further be indicative a second quantity of one or more second aperiodic CSI-RS resources, the one or more second aperiodic CSI-RS resources, and a second LTM candidate ID associated with both the second quantity of one or more first aperiodic CSI-RS resources and the one or more second aperiodic CSI-RS resources.
[0167] At 850, the UE 815 may receive a fourth control message (e.g., MAC-CE message) indicative of fourth configuration information, where the fourth configuration information is indicative of an LTM candidate ID, one or more aperiodic CSI-RS resources, and one or more TCI states. In some examples, the one or more aperiodic CSI-RS resources may be associated with one or more aperiodic CSI-RS resource sets, and each of the one or more aperiodic CSI-RS resource sets may be associated with a respective subset of the one or more TCI states. In some other cases, each of the one or more aperiodic CSI-RS resources may be associated with a respective subset of the one or more TCI states.
[0168] Though described in the context of LTM, this is not to be regarded as a limitation of the present disclosure. In this regard, the techniques described herein may be applied to UE-initiated CSI reporting, event-driven CSI reporting, or both.
[0169] FIG. 9 shows a block diagram 900 of a device 905 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The device 905 may be an example of aspects of a UE 115 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communications manager 920. The device 905, or one or more components of the device 905 (e.g., the receiver 910, the transmitter 915, the communications manager 920) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0170] The receiver 910 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for CSI-RS resource management for LTM measurements) . Information may be passed on to other components of the device 905. The receiver 910 may utilize a single antenna or a set of multiple antennas.
[0171] The transmitter 915 may provide a means for transmitting signals generated by other components of the device 905. For example, the transmitter 915 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for CSI-RS resource management for LTM measurements) . In some examples, the transmitter 915 may be co-located with a receiver 910 in a transceiver module. The transmitter 915 may utilize a single antenna or a set of multiple antennas.
[0172] The communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be examples of means for performing various aspects of techniques for CSI-RS resource management for LTM measurements as described herein. For example, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0173] In some examples, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a digital signal processor (DSP) , a central processing unit (CPU) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0174] Additionally, or alternatively, the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor (e.g., referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 920, the receiver 910, the transmitter 915, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0175] In some examples, the communications manager 920 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 910, the transmitter 915, or both. For example, the communications manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated in combination with the receiver 910, the transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.
[0176] The communications manager 920 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 920 is capable of, configured to, or operable to support a means for receiving a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management. The communications manager 920 is capable of, configured to, or operable to support a means for performing one or more CSI measurements for LTM in accordance with the first configuration information.
[0177] By including or configuring the communications manager 920 in accordance with examples as described herein, the device 905 (e.g., at least one processor controlling or otherwise coupled with the receiver 910, the transmitter 915, the communications manager 920, or a combination thereof) may support techniques for CSI-RS resource management for LTM measurements, which may result in reduced processing, reduced power consumption, and more efficient utilization of communication resources, among other advantages.
[0178] FIG. 10 shows a block diagram 1000 of a device 1005 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The device 1005 may be an example of aspects of a device 905 or a UE 115 as described herein. The device 1005 may include a receiver 1010, a transmitter 1015, and a communications manager 1020. The device 1005, or one or more components of the device 1005 (e.g., the receiver 1010, the transmitter 1015, the communications manager 1020) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0179] The receiver 1010 may provide a means for receiving information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for CSI-RS resource management for LTM measurements) . Information may be passed on to other components of the device 1005. The receiver 1010 may utilize a single antenna or a set of multiple antennas.
[0180] The transmitter 1015 may provide a means for transmitting signals generated by other components of the device 1005. For example, the transmitter 1015 may transmit information such as packets, user data, control information, or any combination thereof associated with various information channels (e.g., control channels, data channels, information channels related to techniques for CSI-RS resource management for LTM measurements) . In some examples, the transmitter 1015 may be co-located with a receiver 1010 in a transceiver module. The transmitter 1015 may utilize a single antenna or a set of multiple antennas.
[0181] The device 1005, or various components thereof, may be an example of means for performing various aspects of techniques for CSI-RS resource management for LTM measurements as described herein. For example, the communications manager 1020 may include a configuration component 1025 a CSI measurement component 1030, or any combination thereof. The communications manager 1020 may be an example of aspects of a communications manager 920 as described herein. In some examples, the communications manager 1020, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1010, the transmitter 1015, or both. For example, the communications manager 1020 may receive information from the receiver 1010, send information to the transmitter 1015, or be integrated in combination with the receiver 1010, the transmitter 1015, or both to obtain information, output information, or perform various other operations as described herein.
[0182] The communications manager 1020 may support wireless communications in accordance with examples as disclosed herein. The configuration component 1025 is capable of, configured to, or operable to support a means for receiving a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management. The CSI measurement component 1030 is capable of, configured to, or operable to support a means for performing one or more CSI measurements for LTM in accordance with the first configuration information.
[0183] FIG. 11 shows a block diagram 1100 of a communications manager 1120 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The communications manager 1120 may be an example of aspects of a communications manager 920, a communications manager 1020, or both, as described herein. The communications manager 1120, or various components thereof, may be an example of means for performing various aspects of techniques for CSI-RS resource management for LTM measurements as described herein. For example, the communications manager 1120 may include a configuration component 1125, a CSI measurement component 1130, an activation component 1135, a down-selection component 1140, a reconfiguration component 1145, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
[0184] The communications manager 1120 may support wireless communications in accordance with examples as disclosed herein. The configuration component 1125 is capable of, configured to, or operable to support a means for receiving a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management. The CSI measurement component 1130 is capable of, configured to, or operable to support a means for performing one or more CSI measurements for LTM in accordance with the first configuration information.
[0185] In some examples, the first configuration information includes an indication of the first resource type. In some examples, the second resource type is the same as the first resource type based on the second configuration information failing to include an indication of the second resource type.
[0186] In some examples, the first configuration information includes an indication of the first resource type. In some examples, the second configuration information includes an indication of the second resource type.
[0187] In some examples, to support performing one or more CSI measurements in accordance with the first configuration information, the CSI measurement component 1130 is capable of, configured to, or operable to support a means for performing the one or more CSI measurements in accordance with the first resource type based on the first resource type being associated with a higher priority than the second resource type.
[0188] In some examples, the set of resource types further includes a periodic resource type and to support performing the one or more CSI measurements in accordance with the first configuration information, the CSI measurement component 1130 is capable of, configured to, or operable to support a means for performing the one or more CSI measurements in accordance with the first resource type, where the first resource type is the periodic resource type based on the second resource type being the periodic resource type.
[0189] In some examples, the first configuration information being indicative of the first resource type is based on the second configuration information including an indication of the second resource type. In some examples, the first resource type and the second resource type are a same resource type. In some examples, the same resource type is a periodic resource type.
[0190] In some examples, the first configuration information includes an indication of the first resource type from the set of resource types including the aperiodic resource type and the semi-persistent resource type. In some examples, the second configuration information includes an indication of the second resource type, the second resource type being a periodic resource type.
[0191] In some examples, the first configuration information being indicative of the first resource type is based on the second configuration information including an indication of the first resource type.
[0192] In some examples, the set of resource types further includes a periodic resource type and to support performing the one or more CSI measurements in accordance with the first configuration information, the CSI measurement component 1130 is capable of, configured to, or operable to support a means for performing the one or more CSI measurements in accordance with the first resource type based on the first resource type being associated with a higher priority than the second resource type.
[0193] In some examples, to support performing one or more CSI measurements in accordance with the first configuration information, the CSI measurement component 1130 is capable of, configured to, or operable to support a means for performing the one or more CSI measurements in accordance with the first resource type, where the first resource type is the aperiodic resource type or the semi-persistent resource type based on the second resource type being a periodic resource type.
[0194] In some examples, the set of resource types further includes a periodic resource type.
[0195] In some examples, the one or more CSI-RS resources are associated with a CSI-RS resource set.
[0196] In some examples, the first configuration information is further indicative of any combination of a CSI resource configuration identifier, one or more CSI SSB resources, and one or more LTM candidate identifiers.
[0197] In some examples, the activation component 1135 is capable of, configured to, or operable to support a means for receiving a second control message that activates or deactivates the CSI reporting for LTM, where the second control message is indicative of at least one LTM candidate identifier, one or more first semi-persistent CSI-RS resources, and one or more first transmission configuration indicator states associated with the one or more first semi-persistent CSI-RS resources, and where performing the one or more CSI measurements for LTM in accordance with the first configuration information is based on receiving the second control message activating the CSI reporting for LTM.
[0198] In some examples, the second control message further includes an LTM indicator, the LTM indicator indicating that the second control message is associated with the CSI reporting for LTM.
[0199] In some examples, the second control message further includes a logical channel identifier. In some examples, the second control message is associated with CSI reporting based on the logical channel identifier.
[0200] In some examples, both the one or more first semi-persistent CSI-RS resources and the one or more first transmission configuration indicator states are associated with a first configuration for first LTM candidate of a set of LTM candidates. In some examples, the second control message is further indicative of one or more second semi-persistent CSI-RS resources and one or more second transmission configuration indicator states associated with the one or more second semi-persistent CSI-RS resources. In some examples, both the one or more second semi-persistent CSI-RS resources and the one or more second transmission configuration indicator states are associated with a second configuration for second LTM candidate of the set of LTM candidates.
[0201] In some examples, the second control message includes a first field indicating a last octet associated with the first configuration.
[0202] In some examples, the one or more first semi-persistent CSI-RS resources are associated with a first semi-persistent CSI-RS resource set. In some examples, the second control message is indicative of the one or more first semi-persistent CSI-RS resources based on the second control message indicating a first semi-persistent CSI-RS resource set identifier associated with the first semi-persistent CSI-RS resource set.
[0203] In some examples, the second control message indicates each of the one or more first semi-persistent CSI-RS resources via a respective semi-persistent CSI-RS resource identifier. In some examples, each of the one or more first semi-persistent CSI-RS resources is associated with a respective first transmission configuration indicator state of the one or more first transmission configuration indicator states.
[0204] In some examples, the second control message is indicative of a set of multiple LTM candidate identifiers including the at least one LTM candidate identifier. In some examples, the second control message is indicative of a set of multiple LTM candidate identifiers based on the second control message including an identifier associated with the first configuration information.
[0205] In some examples, the down-selection component 1140 is capable of, configured to, or operable to support a means for receiving a third control message indicative of third configuration information, where the third configuration information is indicative of a serving cell identifier, an index associated with an aperiodic trigger state, a first quantity of one or more first aperiodic CSI-RS resources, and the one or more first aperiodic CSI-RS resources.
[0206] In some examples, the third control message is indicative of a first LTM candidate identifier associated with both the first quantity of one or more first aperiodic CSI-RS resources and the one or more first aperiodic CSI-RS resources. In some examples, the third control message is further indicative a second quantity of one or more second aperiodic CSI-RS resources, the one or more second aperiodic CSI-RS resources, and a second LTM candidate identifier associated with both the second quantity of one or more first aperiodic CSI-RS resources and the one or more second aperiodic CSI-RS resources.
[0207] In some examples, the one or more first aperiodic CSI-RS resources are associated with one or more first aperiodic CSI-RS resource sets.
[0208] In some examples, the reconfiguration component 1145 is capable of, configured to, or operable to support a means for receiving a fourth control message indicative of third configuration information, where the third configuration information is indicative of an LTM candidate identifier, one or more aperiodic CSI-RS resources, and one or more transmission configuration indicator states.
[0209] In some examples, the one or more aperiodic CSI-RS resources are associated with one or more aperiodic CSI-RS resource sets. In some examples, each of the one or more aperiodic CSI-RS resource sets are associated with a respective subset of the one or more transmission configuration indicator states.
[0210] In some examples, each of the one or more aperiodic CSI-RS resources are associated with a respective subset of the one or more transmission configuration indicator states.
[0211] FIG. 12 shows a diagram of a system 1200 including a device 1205 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The device 1205 may be an example of or include components of a device 905, a device 1005, or a UE 115 as described herein. The device 1205 may communicate (e.g., wirelessly) with one or more other devices (e.g., network entities 105, UEs 115, or a combination thereof) . The device 1205 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, such as a communications manager 1220, an input / output (I / O) controller, such as an I / O controller 1210, a transceiver 1215, one or more antennas 1225, at least one memory 1230, code 1235, and at least one processor 1240. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1245) .
[0212] The I / O controller 1210 may manage input and output signals for the device 1205. The I / O controller 1210 may also manage peripherals not integrated into the device 1205. In some cases, the I / O controller 1210 may represent a physical connection or port to an external peripheral. In some cases, the I / O controller 1210 may utilize an operating system such as or another known operating system. Additionally, or alternatively, the I / O controller 1210 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device. In some cases, the I / O controller 1210 may be implemented as part of one or more processors, such as the at least one processor 1240. In some cases, a user may interact with the device 1205 via the I / O controller 1210 or via hardware components controlled by the I / O controller 1210.
[0213] In some cases, the device 1205 may include a single antenna. However, in some other cases, the device 1205 may have more than one antenna, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1215 may communicate bi-directionally via the one or more antennas 1225 using wired or wireless links as described herein. For example, the transceiver 1215 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver. The transceiver 1215 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 1225 for transmission, and to demodulate packets received from the one or more antennas 1225. The transceiver 1215, or the transceiver 1215 and one or more antennas 1225, may be an example of a transmitter 915, a transmitter 1015, a receiver 910, a receiver 1010, or any combination thereof or component thereof, as described herein.
[0214] The at least one memory 1230 may include random access memory (RAM) and read-only memory (ROM) . The at least one memory 1230 may store computer-readable, computer-executable, or processor-executable code, such as the code 1235. The code 1235 may include instructions that, when executed by the at least one processor 1240, cause the device 1205 to perform various functions described herein. The code 1235 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1235 may not be directly executable by the at least one processor 1240 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1230 may include, among other things, a basic I / O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
[0215] The at least one processor 1240 may include one or more intelligent hardware devices (e.g., one or more general-purpose processors, one or more DSPs, one or more CPUs, one or more graphics processing units (GPUs) , one or more neural processing units (NPUs) (also referred to as neural network processors or deep learning processors (DLPs) ) , one or more microcontrollers, one or more ASICs, one or more FPGAs, one or more programmable logic devices, discrete gate or transistor logic, one or more discrete hardware components, or any combination thereof) . In some cases, the at least one processor 1240 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into the at least one processor 1240. The at least one processor 1240 may be configured to execute computer-readable instructions stored in a memory (e.g., the at least one memory 1230) to cause the device 1205 to perform various functions (e.g., functions or tasks supporting techniques for CSI-RS resource management for LTM measurements) . For example, the device 1205 or a component of the device 1205 may include at least one processor 1240 and at least one memory 1230 coupled with or to the at least one processor 1240, the at least one processor 1240 and the at least one memory 1230 configured to perform various functions described herein.
[0216] In some examples, the at least one processor 1240 may include multiple processors and the at least one memory 1230 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions described herein. In some examples, the at least one processor 1240 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1240) and memory circuitry (which may include the at least one memory 1230) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 1240 or a processing system including the at least one processor 1240 may be configured to, configurable to, or operable to cause the device 1205 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to” may be used interchangeably and may be associated with a capability, when executing code 1235 (e.g., processor-executable code) stored in the at least one memory 1230 or otherwise, to perform one or more of the functions described herein.
[0217] The communications manager 1220 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1220 is capable of, configured to, or operable to support a means for receiving a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management. The communications manager 1220 is capable of, configured to, or operable to support a means for performing one or more CSI measurements for LTM in accordance with the first configuration information.
[0218] By including or configuring the communications manager 1220 in accordance with examples as described herein, the device 1205 may support techniques CSI-RS resource management for LTM measurements, which may result in improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, and improved utilization of processing capability, among other advantages.
[0219] In some examples, the communications manager 1220 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise in cooperation with the transceiver 1215, the one or more antennas 1225, or any combination thereof. Although the communications manager 1220 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1220 may be supported by or performed by the at least one processor 1240, the at least one memory 1230, the code 1235, or any combination thereof. For example, the code 1235 may include instructions executable by the at least one processor 1240 to cause the device 1205 to perform various aspects of techniques for CSI-RS resource management for LTM measurements as described herein, or the at least one processor 1240 and the at least one memory 1230 may be otherwise configured to, individually or collectively, perform or support such operations.
[0220] FIG. 13 shows a block diagram 1300 of a device 1305 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The device 1305 may be an example of aspects of a network entity 105 as described herein. The device 1305 may include a receiver 1310, a transmitter 1315, and a communications manager 1320. The device 1305, or one or more components of the device 1305 (e.g., the receiver 1310, the transmitter 1315, the communications manager 1320) , may include at least one processor, which may be coupled with at least one memory, to, individually or collectively, support or enable the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0221] The receiver 1310 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 1305. In some examples, the receiver 1310 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1310 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0222] The transmitter 1315 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1305. For example, the transmitter 1315 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . In some examples, the transmitter 1315 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1315 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1315 and the receiver 1310 may be co-located in a transceiver, which may include or be coupled with a modem.
[0223] The communications manager 1320, the receiver 1310, the transmitter 1315, or various combinations or components thereof may be examples of means for performing various aspects of techniques for CSI-RS resource management for LTM measurements as described herein. For example, the communications manager 1320, the receiver 1310, the transmitter 1315, or various combinations or components thereof may be capable of performing one or more of the functions described herein.
[0224] In some examples, the communications manager 1320, the receiver 1310, the transmitter 1315, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) . The hardware may include at least one of a processor, a DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure. In some examples, at least one processor and at least one memory coupled with the at least one processor may be configured to perform one or more of the functions described herein (e.g., by one or more processors, individually or collectively, executing instructions stored in the at least one memory) .
[0225] Additionally, or alternatively, the communications manager 1320, the receiver 1310, the transmitter 1315, or various combinations or components thereof may be implemented in code (e.g., as communications management software or firmware) executed by at least one processor (e.g., referred to as a processor-executable code) . If implemented in code executed by at least one processor, the functions of the communications manager 1320, the receiver 1310, the transmitter 1315, or various combinations or components thereof may be performed by a general-purpose processor, a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices (e.g., configured as or otherwise supporting, individually or collectively, a means for performing the functions described in the present disclosure) .
[0226] In some examples, the communications manager 1320 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1310, the transmitter 1315, or both. For example, the communications manager 1320 may receive information from the receiver 1310, send information to the transmitter 1315, or be integrated in combination with the receiver 1310, the transmitter 1315, or both to obtain information, output information, or perform various other operations as described herein.
[0227] The communications manager 1320 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1320 is capable of, configured to, or operable to support a means for transmitting a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management. The communications manager 1320 is capable of, configured to, or operable to support a means for transmitting one or more CSI-RS for LTM in accordance with the first configuration information.
[0228] By including or configuring the communications manager 1320 in accordance with examples as described herein, the device 1305 (e.g., at least one processor controlling or otherwise coupled with the receiver 1310, the transmitter 1315, the communications manager 1320, or a combination thereof) may support techniques for CSI-RS resource management for LTM measurements, which may result in reduced processing, reduced power consumption, and more efficient utilization of communication resources, among other advantages.
[0229] FIG. 14 shows a block diagram 1400 of a device 1405 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The device 1405 may be an example of aspects of a device 1305 or a network entity 105 as described herein. The device 1405 may include a receiver 1410, a transmitter 1415, and a communications manager 1420. The device 1405, or one or more components of the device 1405 (e.g., the receiver 1410, the transmitter 1415, the communications manager 1420) , may include at least one processor, which may be coupled with at least one memory, to support the described techniques. Each of these components may be in communication with one another (e.g., via one or more buses) .
[0230] The receiver 1410 may provide a means for obtaining (e.g., receiving, determining, identifying) information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . Information may be passed on to other components of the device 1405. In some examples, the receiver 1410 may support obtaining information by receiving signals via one or more antennas. Additionally, or alternatively, the receiver 1410 may support obtaining information by receiving signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof.
[0231] The transmitter 1415 may provide a means for outputting (e.g., transmitting, providing, conveying, sending) information generated by other components of the device 1405. For example, the transmitter 1415 may output information such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units) associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) . In some examples, the transmitter 1415 may support outputting information by transmitting signals via one or more antennas. Additionally, or alternatively, the transmitter 1415 may support outputting information by transmitting signals via one or more wired (e.g., electrical, fiber optic) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 1415 and the receiver 1410 may be co-located in a transceiver, which may include or be coupled with a modem.
[0232] The device 1405, or various components thereof, may be an example of means for performing various aspects of techniques for CSI-RS resource management for LTM measurements as described herein. For example, the communications manager 1420 may include a configuration component 1425 a reference signal component 1430, or any combination thereof. The communications manager 1420 may be an example of aspects of a communications manager 1320 as described herein. In some examples, the communications manager 1420, or various components thereof, may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the receiver 1410, the transmitter 1415, or both. For example, the communications manager 1420 may receive information from the receiver 1410, send information to the transmitter 1415, or be integrated in combination with the receiver 1410, the transmitter 1415, or both to obtain information, output information, or perform various other operations as described herein.
[0233] The communications manager 1420 may support wireless communications in accordance with examples as disclosed herein. The configuration component 1425 is capable of, configured to, or operable to support a means for transmitting a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management. The reference signal component 1430 is capable of, configured to, or operable to support a means for transmitting one or more CSI-RS for LTM in accordance with the first configuration information.
[0234] FIG. 15 shows a block diagram 1500 of a communications manager 1520 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The communications manager 1520 may be an example of aspects of a communications manager 1320, a communications manager 1420, or both, as described herein. The communications manager 1520, or various components thereof, may be an example of means for performing various aspects of techniques for CSI-RS resource management for LTM measurements as described herein. For example, the communications manager 1520 may include a configuration component 1525, a reference signal component 1530, an activation component 1535, a down-selection component 1540, a reconfiguration component 1545, or any combination thereof. Each of these components, or components or subcomponents thereof (e.g., one or more processors, one or more memories) , may communicate, directly or indirectly, with one another (e.g., via one or more buses) . The communications may include communications within a protocol layer of a protocol stack, communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualized component associated with a network entity 105, between devices, components, or virtualized components associated with a network entity 105) , or any combination thereof.
[0235] The communications manager 1520 may support wireless communications in accordance with examples as disclosed herein. The configuration component 1525 is capable of, configured to, or operable to support a means for transmitting a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management. The reference signal component 1530 is capable of, configured to, or operable to support a means for transmitting one or more CSI-RS for LTM in accordance with the first configuration information.
[0236] In some examples, the first configuration information includes an indication of the first resource type. In some examples, the second resource type is the same as the first resource type based on the second configuration information failing to include an indication of the second resource type.
[0237] In some examples, the first configuration information includes an indication of the first resource type. In some examples, the second configuration information includes an indication of the second resource type.
[0238] In some examples, to support transmitting the one or more CSI-RS in accordance with the first configuration information, the reference signal component 1530 is capable of, configured to, or operable to support a means for transmitting the one or more CSI-RS in accordance with the first resource type based on the first resource type being associated with a higher priority than the second resource type.
[0239] In some examples, the set of resource types further includes a periodic resource type and to support transmitting the one or more CSI-RS in accordance with the first configuration information, the reference signal component 1530 is capable of, configured to, or operable to support a means for transmitting the one or more CSI-RS in accordance with the first resource type, where the first resource type is the periodic resource type based on the second resource type being the periodic resource type.
[0240] In some examples, the first configuration information being indicative of the first resource type is based on the second configuration information including an indication of the second resource type. In some examples, the first resource type and the second resource type are a same resource type. In some examples, the same resource type is a periodic resource type.
[0241] In some examples, the first configuration information includes an indication of the first resource type from the set of resource types including the aperiodic resource type and the semi-persistent resource type. In some examples, the second configuration information includes an indication of the second resource type, the second resource type being a periodic resource type.
[0242] In some examples, the first configuration information being indicative of the first resource type is based on the second configuration information including an indication of the first resource type.
[0243] In some examples, the set of resource types further includes a periodic resource type and to support transmitting the one or more CSI-RS in accordance with the first configuration information, the reference signal component 1530 is capable of, configured to, or operable to support a means for transmitting the one or more CSI-RS in accordance with the first resource type based on the first resource type being associated with a higher priority than the second resource type.
[0244] In some examples, to support transmitting the one or more CSI-RS in accordance with the first configuration information, the reference signal component 1530 is capable of, configured to, or operable to support a means for transmitting the one or more CSI-RS in accordance with the first resource type, where the first resource type is the aperiodic resource type or the semi-persistent resource type based on the second resource type being a periodic resource type.
[0245] In some examples, the set of resource types further includes a periodic resource type.
[0246] In some examples, the one or more CSI-RS resources are associated with a CSI-RS resource set.
[0247] In some examples, the first configuration information is further indicative of any combination of a CSI resource configuration identifier, one or more CSI synchronization signal block (SSB) resources, and one or more LTM candidate identifiers.
[0248] In some examples, the activation component 1535 is capable of, configured to, or operable to support a means for transmitting a second control message that activates or deactivates the CSI reporting for LTM, where the second control message is indicative of at least one LTM candidate identifier, one or more first semi-persistent CSI-RS resources, and one or more first transmission configuration indicator states associated with the one or more first semi-persistent CSI-RS resources, and where transmitting the one or more CSI-RS in accordance with the first configuration information is based on receiving the second control message activating the CSI reporting for LTM.
[0249] In some examples, the second control message further includes an LTM indicator, the LTM indicator indicating that the second control message is associated with the CSI reporting for LTM.
[0250] In some examples, the second control message further includes a logical channel identifier. In some examples, the second control message is associated with CSI reporting based on the logical channel identifier.
[0251] In some examples, both the one or more first semi-persistent CSI-RS resources and the one or more first transmission configuration indicator states are associated with a first configuration for first LTM candidate of a set of LTM candidates. In some examples, the second control message is further indicative of one or more second semi-persistent CSI-RS resources and one or more second transmission configuration indicator states associated with the one or more second semi-persistent CSI-RS resources. In some examples, both the one or more second semi-persistent CSI-RS resources and the one or more second transmission configuration indicator states are associated with a second configuration for second LTM candidate of the set of LTM candidates.
[0252] In some examples, the second control message includes a first field indicating a last octet associated with the first configuration.
[0253] In some examples, the one or more first semi-persistent CSI-RS resources are associated with a first semi-persistent CSI-RS resource set. In some examples, the second control message is indicative of the one or more first semi-persistent CSI-RS resources based on the second control message indicating a first semi-persistent CSI-RS resource set identifier associated with the first semi-persistent CSI-RS resource set.
[0254] In some examples, the second control message indicates each of the one or more first semi-persistent CSI-RS resources via a respective semi-persistent CSI-RS resource identifier. In some examples, each of the one or more first semi-persistent CSI-RS resources is associated with a respective first transmission configuration indicator state of the one or more first transmission configuration indicator states.
[0255] In some examples, the second control message is indicative of a set of multiple LTM candidate identifiers including the at least one LTM candidate identifier. In some examples, the second control message is indicative of a set of multiple LTM candidate identifiers based on the second control message including an identifier associated with the first configuration information.
[0256] In some examples, the down-selection component 1540 is capable of, configured to, or operable to support a means for transmitting a third control message indicative of third configuration information, where the third configuration information is indicative of a serving cell identifier, an index associated with an aperiodic trigger state, a first quantity of one or more first aperiodic CSI-RS resources, and the one or more first aperiodic CSI-RS resources.
[0257] In some examples, the third control message is indicative of a first LTM candidate identifier associated with both the first quantity of one or more first aperiodic CSI-RS resources and the one or more first aperiodic CSI-RS resources. In some examples, the third control message is further indicative a second quantity of one or more second aperiodic CSI-RS resources, the one or more second aperiodic CSI-RS resources, and a second LTM candidate identifier associated with both the second quantity of one or more first aperiodic CSI-RS resources and the one or more second aperiodic CSI-RS resources.
[0258] In some examples, the one or more first aperiodic CSI-RS resources are associated with one or more first aperiodic CSI-RS resource sets.
[0259] In some examples, the reconfiguration component 1545 is capable of, configured to, or operable to support a means for transmitting a fourth control message indicative of third configuration information, where the third configuration information is indicative of an LTM candidate identifier, one or more aperiodic CSI-RS resources, and one or more transmission configuration indicator states.
[0260] In some examples, the one or more aperiodic CSI-RS resources are associated with one or more aperiodic CSI-RS resource sets. In some examples, each of the one or more aperiodic CSI-RS resource sets are associated with a respective subset of the one or more transmission configuration indicator states.
[0261] In some examples, each of the one or more aperiodic CSI-RS resources are associated with a respective subset of the one or more transmission configuration indicator states.
[0262] FIG. 16 shows a diagram of a system 1600 including a device 1605 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The device 1605 may be an example of or include components of a device 1305, a device 1405, or a network entity 105 as described herein. The device 1605 may communicate with other network devices or network equipment such as one or more of the network entities 105, UEs 115, or any combination thereof. The communications may include communications over one or more wired interfaces, over one or more wireless interfaces, or any combination thereof. The device 1605 may include components that support outputting and obtaining communications, such as a communications manager 1620, a transceiver 1610, one or more antennas 1615, at least one memory 1625, code 1630, and at least one processor 1635. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 1640) .
[0263] The transceiver 1610 may support bi-directional communications via wired links, wireless links, or both as described herein. In some examples, the transceiver 1610 may include a wired transceiver and may communicate bi-directionally with another wired transceiver. Additionally, or alternatively, in some examples, the transceiver 1610 may include a wireless transceiver and may communicate bi- directionally with another wireless transceiver. In some examples, the device 1605 may include one or more antennas 1615, which may be capable of transmitting or receiving wireless transmissions (e.g., concurrently) . The transceiver 1610 may also include a modem to modulate signals, to provide the modulated signals for transmission (e.g., by one or more antennas 1615, by a wired transmitter) , to receive modulated signals (e.g., from one or more antennas 1615, from a wired receiver) , and to demodulate signals. In some implementations, the transceiver 1610 may include one or more interfaces, such as one or more interfaces coupled with the one or more antennas 1615 that are configured to support various receiving or obtaining operations, or one or more interfaces coupled with the one or more antennas 1615 that are configured to support various transmitting or outputting operations, or a combination thereof. In some implementations, the transceiver 1610 may include or be configured for coupling with one or more processors or one or more memory components that are operable to perform or support operations based on received or obtained information or signals, or to generate information or other signals for transmission or other outputting, or any combination thereof. In some implementations, the transceiver 1610, or the transceiver 1610 and the one or more antennas 1615, or the transceiver 1610 and the one or more antennas 1615 and one or more processors or one or more memory components (e.g., the at least one processor 1635, the at least one memory 1625, or both) , may be included in a chip or chip assembly that is installed in the device 1605. In some examples, the transceiver 1610 may be operable to support communications via one or more communications links (e.g., communication link (s) 125, backhaul communication link (s) 120, a midhaul communication link 162, a fronthaul communication link 168) .
[0264] The at least one memory 1625 may include RAM, ROM, or any combination thereof. The at least one memory 1625 may store computer-readable, computer-executable, or processor-executable code, such as the code 1630. The code 1630 may include instructions that, when executed by one or more of the at least one processor 1635, cause the device 1605 to perform various functions described herein. The code 1630 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, the code 1630 may not be directly executable by a processor of the at least one processor 1635 but may cause a computer (e.g., when compiled and executed) to perform functions described herein. In some cases, the at least one memory 1625 may include, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices. In some examples, the at least one processor 1635 may include multiple processors and the at least one memory 1625 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories which may, individually or collectively, be configured to perform various functions herein (for example, as part of a processing system) .
[0265] The at least one processor 1635 may include one or more intelligent hardware devices (e.g., one or more general-purpose processors, one or more DSPs, one or more CPUs, one or more graphics processing units (GPUs) , one or more neural processing units (NPUs) (also referred to as neural network processors or deep learning processors (DLPs) ) , one or more microcontrollers, one or more ASICs, one or more FPGAs, one or more programmable logic devices, discrete gate or transistor logic, one or more discrete hardware components, or any combination thereof) . In some cases, the at least one processor 1635 may be configured to operate a memory array using a memory controller. In some other cases, a memory controller may be integrated into one or more of the at least one processor 1635. The at least one processor 1635 may be configured to execute computer-readable instructions stored in a memory (e.g., one or more of the at least one memory 1625) to cause the device 1605 to perform various functions (e.g., functions or tasks supporting techniques for CSI-RS resource management for LTM measurements) . For example, the device 1605 or a component of the device 1605 may include at least one processor 1635 and at least one memory 1625 coupled with one or more of the at least one processor 1635, the at least one processor 1635 and the at least one memory 1625 configured to perform various functions described herein. The at least one processor 1635 may be an example of a cloud-computing platform (e.g., one or more physical nodes and supporting software such as operating systems, virtual machines, or container instances) that may host the functions (e.g., by executing code 1630) to perform the functions of the device 1605. The at least one processor 1635 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1605 (such as within one or more of the at least one memory 1625) .
[0266] In some examples, the at least one processor 1635 may include multiple processors and the at least one memory 1625 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein. In some examples, the at least one processor 1635 may be a component of a processing system, which may refer to a system (such as a series) of machines, circuitry (including, for example, one or both of processor circuitry (which may include the at least one processor 1635) and memory circuitry (which may include the at least one memory 1625) ) , or components, that receives or obtains inputs and processes the inputs to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. For example, the at least one processor 1635 or a processing system including the at least one processor 1635 may be configured to, configurable to, or operable to cause the device 1605 to perform one or more of the functions described herein. Further, as described herein, being “configured to, ” being “configurable to, ” and being “operable to”may be used interchangeably and may be associated with a capability, when executing code stored in the at least one memory 1625 or otherwise, to perform one or more of the functions described herein.
[0267] In some examples, a bus 1640 may support communications of (e.g., within) a protocol layer of a protocol stack. In some examples, a bus 1640 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack) , which may include communications performed within a component of the device 1605, or between different components of the device 1605 that may be co-located or located in different locations (e.g., where the device 1605 may refer to a system in which one or more of the communications manager 1620, the transceiver 1610, the at least one memory 1625, the code 1630, and the at least one processor 1635 may be located in one of the different components or divided between different components) .
[0268] In some examples, the communications manager 1620 may manage aspects of communications with a core network 130 (e.g., via one or more wired or wireless backhaul links) . For example, the communications manager 1620 may manage the transfer of data communications for client devices, such as one or more UEs 115. In some examples, the communications manager 1620 may manage communications with one or more other network entities 105, and may include a controller or scheduler for controlling communications with UEs 115 (e.g., in cooperation with the one or more other network devices) . In some examples, the communications manager 1620 may support an X2 interface within an LTE / LTE-A wireless communications network technology to provide communication between network entities 105.
[0269] The communications manager 1620 may support wireless communications in accordance with examples as disclosed herein. For example, the communications manager 1620 is capable of, configured to, or operable to support a means for transmitting a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management. The communications manager 1620 is capable of, configured to, or operable to support a means for transmitting one or more CSI-RS for LTM in accordance with the first configuration information.
[0270] By including or configuring the communications manager 1620 in accordance with examples as described herein, the device 1605 may support techniques for CSI-RS resource management for LTM measurements, which may result in improved communication reliability, reduced latency, improved user experience related to reduced processing, reduced power consumption, more efficient utilization of communication resources, improved coordination between devices, longer battery life, and improved utilization of processing capability, among other advantages.
[0271] In some examples, the communications manager 1620 may be configured to perform various operations (e.g., receiving, obtaining, monitoring, outputting, transmitting) using or otherwise in cooperation with the transceiver 1610, the one or more antennas 1615 (e.g., where applicable) , or any combination thereof. Although the communications manager 1620 is illustrated as a separate component, in some examples, one or more functions described with reference to the communications manager 1620 may be supported by or performed by the transceiver 1610, one or more of the at least one processor 1635, one or more of the at least one memory 1625, the code 1630, or any combination thereof (for example, by a processing system including at least a portion of the at least one processor 1635, the at least one memory 1625, the code 1630, or any combination thereof) . For example, the code 1630 may include instructions executable by one or more of the at least one processor 1635 to cause the device 1605 to perform various aspects of techniques for CSI-RS resource management for LTM measurements as described herein, or the at least one processor 1635 and the at least one memory 1625 may be otherwise configured to, individually or collectively, perform or support such operations.
[0272] FIG. 17 shows a flowchart illustrating a method 1700 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The operations of the method 1700 may be implemented by a UE or its components as described herein. For example, the operations of the method 1700 may be performed by a UE 115 as described with reference to FIGs. 1 through 12. In some examples, a UE may execute a set of instructions to control the functional elements of the UE to perform the described functions. Additionally, or alternatively, the UE may perform aspects of the described functions using special-purpose hardware.
[0273] At 1705, the method may include receiving a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management. The operations of 1705 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed by a configuration component 1125 as described with reference to FIG. 11.
[0274] At 1710, the method may include performing one or more CSI measurements for LTM in accordance with the first configuration information. The operations of 1710 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1710 may be performed by a CSI measurement component 1130 as described with reference to FIG. 11.
[0275] FIG. 18 shows a flowchart illustrating a method 1800 that supports techniques for CSI-RS resource management for LTM measurements in accordance with one or more aspects of the present disclosure. The operations of the method 1800 may be implemented by a network entity or its components as described herein. For example, the operations of the method 1800 may be performed by a network entity as described with reference to FIGs. 1 through 8 and 13 through 16. In some examples, a network entity may execute a set of instructions to control the functional elements of the network entity to perform the described functions. Additionally, or alternatively, the network entity may perform aspects of the described functions using special-purpose hardware.
[0276] At 1805, the method may include transmitting a first control message indicative of first configuration information associated with CSI reporting for LTM, where the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types including at least an aperiodic resource type and semi-persistent resource type, and where the one or more CSI-RS resources are associated with a second resource type for TCI state management. The operations of 1805 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1805 may be performed by a configuration component 1525 as described with reference to FIG. 15.
[0277] At 1810, the method may include transmitting one or more CSI-RS for LTM in accordance with the first configuration information. The operations of 1810 may be performed in accordance with examples as disclosed herein. In some examples, aspects of the operations of 1810 may be performed by a reference signal component 1530 as described with reference to FIG. 15.
[0278] The following provides an overview of aspects of the present disclosure:
[0279] Aspect 1: A method for wireless communications at a UE, comprising: receiving a first control message indicative of first configuration information associated with CSI reporting for LTM, wherein the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types comprising at least an aperiodic resource type and an SP resource type, and wherein the one or more CSI-RS resources are associated with a second resource type for TCI state management; and performing one or more CSI measurements for LTM in accordance with the first configuration information.
[0280] Aspect 2: The method of aspect 1, wherein the first configuration information comprises an indication of the first resource type, and the second resource type is the same as the first resource type based at least in part on the second configuration information failing to comprise an indication of the second resource type.
[0281] Aspect 3: The method of any of aspects 1 through 2, wherein the first configuration information comprises an indication of the first resource type, and the second configuration information comprises an indication of the second resource type.
[0282] Aspect 4: The method of aspect 3, wherein performing one or more CSI measurements in accordance with the first configuration information comprises: performing the one or more CSI measurements in accordance with the first resource type based at least in part on the first resource type being associated with a higher priority than the second resource type.
[0283] Aspect 5: The method of any of aspects 3 through 4, wherein the set of resource types further comprises a periodic resource type, and wherein performing one or more CSI measurements in accordance with the first configuration information comprises: performing the one or more CSI measurements in accordance with the first resource type, wherein the first resource type is the periodic resource type based at least in part on the second resource type being the periodic resource type.
[0284] Aspect 6: The method of any of aspects 1 through 5, wherein the first configuration information being indicative of the first resource type is based at least in part on the second configuration information comprising an indication of the second resource type, the first resource type and the second resource type are a same resource type, and the same resource type is a periodic resource type.
[0285] Aspect 7: The method of any of aspects 1 through 6, wherein the first configuration information comprises an indication of the first resource type from the set of resource types comprising the aperiodic resource type and the SP resource type, and the second configuration information comprises an indication of the second resource type, the second resource type being a periodic resource type.
[0286] Aspect 8: The method of any of aspects 1 through 7, wherein the first configuration information being indicative of the first resource type is based at least in part on the second configuration information comprising an indication of the first resource type.
[0287] Aspect 9: The method of aspect 8, wherein the set of resource types further comprises a periodic resource type, and wherein performing one or more CSI measurements in accordance with the first configuration information comprises: performing the one or more CSI measurements in accordance with the first resource type based at least in part on the first resource type being associated with a higher priority than the second resource type.
[0288] Aspect 10: The method of any of aspects 8 through 9, wherein performing one or more CSI measurements in accordance with the first configuration information comprises: performing the one or more CSI measurements in accordance with the first resource type, wherein the first resource type is the aperiodic resource type or the SP resource type based at least in part on the second resource type being a periodic resource type.
[0289] Aspect 11: The method of any of aspects 1 through 10, wherein the set of resource types further comprises a periodic resource type.
[0290] Aspect 12: The method of any of aspects 1 through 11, wherein the one or more CSI-RS resources are associated with a CSI-RS resource set.
[0291] Aspect 13: The method of any of aspects 1 through 12, wherein the first configuration information is further indicative of any combination of a CSI resource configuration ID, one or more CSI SSB resources, and one or more LTM candidate IDs.
[0292] Aspect 14: The method of any of aspects 1 through 13, further comprising: receiving a second control message that activates or deactivates the CSI reporting for LTM, where the second control message is indicative of at least one LTM candidate ID, one or more first SP CSI-RS resources, and one or more first TCI states associated with the one or more first SP CSI-RS resources, and wherein performing the one or more CSI measurements for LTM in accordance with the first configuration information is based at least in part on receiving the second control message activating the CSI reporting for LTM.
[0293] Aspect 15: The method of aspect 14, wherein the second control message further comprises an LTM indicator, the LTM indicator indicating that the second control message is associated with the CSI reporting for LTM.
[0294] Aspect 16: The method of any of aspects 14 through 15, wherein the second control message further comprises a LCID, and the second control message is associated with CSI reporting based at least in part on the LCID.
[0295] Aspect 17: The method of any of aspects 14 through 16, wherein both the one or more first SP CSI-RS resources and the one or more first TCI states are associated with a first configuration for first LTM candidate of a set of LTM candidates, the second control message is further indicative of one or more second SP CSI-RS resources and one or more second TCI states associated with the one or more second SP CSI-RS resources, and both the one or more second SP CSI-RS resources and the one or more second TCI states are associated with a second configuration for second LTM candidate of the set of LTM candidates.
[0296] Aspect 18: The method of aspect 17, wherein the second control message comprises a first field indicating a last octet associated with the first configuration.
[0297] Aspect 19: The method of any of aspects 14 through 18, wherein the one or more first SP CSI-RS resources are associated with a first SP CSI-RS resource set, and the second control message is indicative of the one or more first SP CSI-RS resources based at least in part on the second control message indicating a first SP CSI-RS resource set ID associated with the first SP CSI-RS resource set.
[0298] Aspect 20: The method of any of aspects 14 through 19, wherein the second control message indicates each of the one or more first SP CSI-RS resources via a respective SP CSI-RS resource ID, and each of the one or more first SP CSI-RS resources is associated with a respective first TCI state of the one or more first TCI states.
[0299] Aspect 21: The method of any of aspects 14 through 20, wherein the second control message is indicative of a plurality of LTM candidate IDs comprising the at least one LTM candidate ID, and the second control message is indicative of a plurality of LTM candidate IDs based at least in part on the second control message comprising an ID associated with the first configuration information.
[0300] Aspect 22: The method of any of aspects 1 through 21, further comprising: receiving a third control message indicative of third configuration information, wherein the third configuration information is indicative of a serving cell ID, an index associated with an aperiodic trigger state, a first quantity of one or more first aperiodic CSI-RS resources, and the one or more first aperiodic CSI-RS resources.
[0301] Aspect 23: The method of aspect 22, wherein the third control message is indicative of a first LTM candidate ID associated with both the first quantity of one or more first aperiodic CSI-RS resources and the one or more first aperiodic CSI-RS resources, and the third control message is further indicative a second quantity of one or more second aperiodic CSI-RS resources, the one or more second aperiodic CSI-RS resources, and a second LTM candidate ID associated with both the second quantity of one or more first aperiodic CSI-RS resources and the one or more second aperiodic CSI-RS resources.
[0302] Aspect 24: The method of any of aspects 22 through 23, wherein the one or more first aperiodic CSI-RS resources are associated with one or more first aperiodic CSI-RS resource sets.
[0303] Aspect 25: The method of any of aspects 1 through 24, further comprising: receiving a fourth control message indicative of third configuration information, wherein the third configuration information is indicative of an LTM candidate ID, one or more aperiodic CSI-RS resources, and one or more TCI states.
[0304] Aspect 26: The method of aspect 25, wherein the one or more aperiodic CSI-RS resources are associated with one or more aperiodic CSI-RS resource sets, and each of the one or more aperiodic CSI-RS resource sets are associated with a respective subset of the one or more TCI states.
[0305] Aspect 27: The method of any of aspects 25 through 26, wherein each of the one or more aperiodic CSI-RS resources are associated with a respective subset of the one or more TCI states.
[0306] Aspect 28: A method for wireless communications at a network entity, comprising: transmitting a first control message indicative of first configuration information associated with CSI reporting for LTM , wherein the first configuration information is indicative of second configuration information associated with one or more CSI-RS resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types comprising at least an aperiodic resource type and an SP resource type, and wherein the one or more CSI-RS resources are associated with a second resource type for TCI state management; and transmitting one or more CSI-RS for LTM in accordance with the first configuration information.
[0307] Aspect 29: The method of aspect 28, wherein the first configuration information comprises an indication of the first resource type, and the second resource type is the same as the first resource type based at least in part on the second configuration information failing to comprise an indication of the second resource type.
[0308] Aspect 30: The method of any of aspects 28 through 29, wherein the first configuration information comprises an indication of the first resource type, and the second configuration information comprises an indication of the second resource type.
[0309] Aspect 31: The method of aspect 30, wherein transmitting the one or more CSI-RS in accordance with the first configuration information comprises: transmitting the one or more CSI-RS in accordance with the first resource type based at least in part on the first resource type being associated with a higher priority than the second resource type.
[0310] Aspect 32: The method of any of aspects 30 through 31, wherein the set of resource types further comprises a periodic resource type, and wherein transmitting the one or more CSI-RS in accordance with the first configuration information comprises: transmitting the one or more CSI-RS in accordance with the first resource type, wherein the first resource type is the periodic resource type based at least in part on the second resource type being the periodic resource type.
[0311] Aspect 33: The method of any of aspects 28 through 32, wherein the first configuration information being indicative of the first resource type is based at least in part on the second configuration information comprising an indication of the second resource type, the first resource type and the second resource type are a same resource type, and the same resource type is a periodic resource type.
[0312] Aspect 34: The method of any of aspects 28 through 33, wherein the first configuration information comprises an indication of the first resource type from the set of resource types comprising the aperiodic resource type and the SP resource type, and the second configuration information comprises an indication of the second resource type, the second resource type being a periodic resource type.
[0313] Aspect 35: The method of any of aspects 28 through 34, wherein the first configuration information being indicative of the first resource type is based at least in part on the second configuration information comprising an indication of the first resource type.
[0314] Aspect 36: The method of aspect 35, wherein the set of resource types further comprises a periodic resource type, and wherein transmitting the one or more CSI-RS in accordance with the first configuration information comprises: transmitting the one or more CSI-RS in accordance with the first resource type based at least in part on the first resource type being associated with a higher priority than the second resource type.
[0315] Aspect 37: The method of any of aspects 35 through 36, wherein transmitting the one or more CSI-RS in accordance with the first configuration information comprises: transmitting the one or more CSI-RS in accordance with the first resource type, wherein the first resource type is the aperiodic resource type or the SP resource type based at least in part on the second resource type being a periodic resource type.
[0316] Aspect 38: The method of any of aspects 28 through 37, wherein the set of resource types further comprises a periodic resource type.
[0317] Aspect 39: The method of any of aspects 28 through 38, wherein the one or more CSI-RS resources are associated with a CSI-RS resource set.
[0318] Aspect 40: The method of any of aspects 28 through 39, wherein the first configuration information is further indicative of any combination of a CSI resource configuration ID, one or more CSI SSB resources, and one or more LTM candidate IDs.
[0319] Aspect 41: The method of any of aspects 28 through 40, further comprising: transmitting a second control message that activates or deactivates the CSI reporting for LTM, where the second control message is indicative of at least one LTM candidate ID, one or more first SP CSI-RS resources, and one or more first TCI states associated with the one or more first SP CSI-RS resources, and wherein transmitting the one or more CSI-RS in accordance with the first configuration information is based at least in part on receiving the second control message activating the CSI reporting for LTM.
[0320] Aspect 42: The method of aspect 41, wherein the second control message further comprises an LTM indicator, the LTM indicator indicating that the second control message is associated with the CSI reporting for LTM.
[0321] Aspect 43: The method of any of aspects 41 through 42, wherein the second control message further comprises a LCID, and the second control message is associated with CSI reporting based at least in part on the LCID.
[0322] Aspect 44: The method of any of aspects 41 through 43, wherein both the one or more first SP CSI-RS resources and the one or more first TCI states are associated with a first configuration for first LTM candidate of a set of LTM candidates, the second control message is further indicative of one or more second SP CSI-RS resources and one or more second TCI states associated with the one or more second SP CSI-RS resources, and both the one or more second SP CSI-RS resources and the one or more second TCI states are associated with a second configuration for second LTM candidate of the set of LTM candidates.
[0323] Aspect 45: The method of aspect 44, wherein the second control message comprises a first field indicating a last octet associated with the first configuration.
[0324] Aspect 46: The method of any of aspects 41 through 45, wherein the one or more first SP CSI-RS resources are associated with a first SP CSI-RS resource set, and the second control message is indicative of the one or more first SP CSI-RS resources based at least in part on the second control message indicating a first SP CSI-RS resource set ID associated with the first SP CSI-RS resource set.
[0325] Aspect 47: The method of any of aspects 41 through 46, wherein the second control message indicates each of the one or more first SP CSI-RS resources via a respective SP CSI-RS resource ID, and each of the one or more first SP CSI-RS resources is associated with a respective first TCI state of the one or more first TCI states.
[0326] Aspect 48: The method of any of aspects 41 through 47, wherein the second control message is indicative of a plurality of LTM candidate IDs comprising the at least one LTM candidate ID, and the second control message is indicative of a plurality of LTM candidate IDs based at least in part on the second control message comprising an ID associated with the first configuration information.
[0327] Aspect 49: The method of any of aspects 28 through 48, further comprising: transmitting a third control message indicative of third configuration information, wherein the third configuration information is indicative of a serving cell ID, an index associated with an aperiodic trigger state, a first quantity of one or more first aperiodic CSI-RS resources, and the one or more first aperiodic CSI-RS resources.
[0328] Aspect 50: The method of aspect 49, wherein the third control message is indicative of a first LTM candidate ID associated with both the first quantity of one or more first aperiodic CSI-RS resources and the one or more first aperiodic CSI-RS resources, and the third control message is further indicative a second quantity of one or more second aperiodic CSI-RS resources, the one or more second aperiodic CSI-RS resources, and a second LTM candidate ID associated with both the second quantity of one or more first aperiodic CSI-RS resources and the one or more second aperiodic CSI-RS resources.
[0329] Aspect 51: The method of any of aspects 49 through 50, wherein the one or more first aperiodic CSI-RS resources are associated with one or more first aperiodic CSI-RS resource sets.
[0330] Aspect 52: The method of any of aspects 28 through 51, further comprising: transmitting a fourth control message indicative of third configuration information, wherein the third configuration information is indicative of an LTM candidate ID, one or more aperiodic CSI-RS resources, and one or more TCI states.
[0331] Aspect 53: The method of aspect 52, wherein the one or more aperiodic CSI-RS resources are associated with one or more aperiodic CSI-RS resource sets, and each of the one or more aperiodic CSI-RS resource sets are associated with a respective subset of the one or more TCI states.
[0332] Aspect 54: The method of any of aspects 52 through 53, wherein each of the one or more aperiodic CSI-RS resources are associated with a respective subset of the one or more TCI states.
[0333] Aspect 55: A UE for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to perform a method of any of aspects 1 through 27.
[0334] Aspect 56: A UE for wireless communications, comprising at least one means for performing a method of any of aspects 1 through 27.
[0335] Aspect 57: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 1 through 27.
[0336] Aspect 58: A network entity for wireless communications, comprising one or more memories storing processor-executable code, and one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the network entity to perform a method of any of aspects 28 through 54.
[0337] Aspect 59: A network entity for wireless communications, comprising at least one means for performing a method of any of aspects 28 through 54.
[0338] Aspect 60: A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by one or more processors to perform a method of any of aspects 28 through 54.
[0339] It should be noted that the methods described herein describe possible implementations. The operations and the steps may be rearranged or otherwise modified and other implementations are possible. Further, aspects from two or more of the methods may be combined.
[0340] Although aspects of an LTE, LTE-A, LTE-A Pro, or NR system may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
[0341] Information and signals described herein may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0342] The various illustrative blocks and components described in connection with the disclosure herein may be implemented or performed using a general-purpose processor, a DSP, an ASIC, a CPU, a graphics processing unit (GPU) , a neural processing unit (NPU) , an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor but, in the alternative, the processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) . Any functions or operations described herein as being capable of being performed by a processor may be performed by multiple processors that, individually or collectively, are capable of performing the described functions or operations.
[0343] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. If implemented using software executed by a processor, the functions may be stored as or transmitted using one or more instructions or code of a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
[0344] Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Also, any connection is properly termed a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave, then the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, include CD, laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and Blu-ray disc. Disks may reproduce data magnetically, and discs may reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media. Any functions or operations described herein as being capable of being performed by a memory may be performed by multiple memories that, individually or collectively, are capable of performing the described functions or operations.
[0345] As used herein, including in the claims, “or” as used in a list of items (e.g., a list of items prefaced by a phrase such as “at least one of” or “one or more of” ) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) . Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on. ”
[0346] As used herein, including in the claims, the article “a” before a noun is open-ended and understood to refer to “at least one” of those nouns or “one or more” of those nouns. Thus, the terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable. For example, if a claim recites “acomponent” that performs one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “acomponent” having characteristics or performing functions may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent reference to a component introduced with the article “a” using the terms “the” or “said” may refer to any or all of the one or more components. For example, a component introduced with the article “a” may be understood to mean “one or more components, ” and referring to “the component” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ” Similarly, subsequent reference to a component introduced as “one or more components” using the terms “the” or “said” may refer to any or all of the one or more components. For example, referring to “the one or more components” subsequently in the claims may be understood to be equivalent to referring to “at least one of the one or more components. ”
[0347] The term “determine” or “determining” encompasses a variety of actions and, therefore, “determining” can include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, a database, or another data structure) , ascertaining, and the like. Also, “determining” can include receiving (e.g., receiving information) , accessing (e.g., accessing data stored in memory) , and the like. Also, “determining” can include resolving, obtaining, selecting, choosing, establishing, and other such similar actions.
[0348] In the appended figures, similar components or features may have the same reference label. Further, various components of the same type may be distinguished by following the reference label by a dash and a second label that distinguishes among the similar components. If just the first reference label is used in the specification, the description is applicable to any one of the similar components having the same first reference label irrespective of the second reference label or other subsequent reference label.
[0349] The description set forth herein, in connection with the appended drawings, describes example configurations and does not represent all the examples that may be implemented or that are within the scope of the claims. The term “example” used herein means “serving as an example, instance, or illustration” and not “preferred” or “advantageous over other examples. ” The detailed description includes specific details for the purpose of providing an understanding of the described techniques. These techniques, however, may be practiced without these specific details. In some figures, known structures and devices are shown in block diagram form in order to avoid obscuring the concepts of the described examples.
[0350] The description herein is provided to enable a person having ordinary skill in the art to make or use the disclosure. Various modifications to the disclosure will be apparent to a person having ordinary skill in the art, and the generic principles defined herein may be applied to other variations without departing from the scope of the disclosure. Thus, the disclosure is not limited to the examples and designs described herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1.A user equipment (UE) , comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:receive a first control message indicative of first configuration information associated with channel state information (CSI) reporting for Layer 1 / Layer 2 triggered mobility (LTM) , wherein the first configuration information is indicative of second configuration information associated with one or more CSI-reference signal (CSI-RS) resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types comprising at least an aperiodic resource type and semi-persistent resource type, and wherein the one or more CSI-RS resources are associated with a second resource type for transmission configuration indicator (TCI) state management; andperform one or more CSI measurements for LTM in accordance with the first configuration information.2.The UE of claim 1, wherein the first configuration information comprises an indication of the first resource type, and wherein the second resource type is the same as the first resource type based at least in part on the second configuration information failing to comprise an indication of the second resource type.3.The UE of claim 1, wherein the first configuration information comprises an indication of the first resource type, and wherein the second configuration information comprises an indication of the second resource type.4.The UE of claim 3, wherein, to perform the one or more CSI measurements in accordance with the first configuration information, the one or more processors are individually or collectively operable to execute the code to cause the UE to:perform the one or more CSI measurements in accordance with the first resource type based at least in part on the first resource type being associated with a higher priority than the second resource type.5.The UE of claim 3, wherein the set of resource types further comprises a periodic resource type and, wherein, to perform the one or more CSI measurements in accordance with the first configuration information, the one or more processors are individually or collectively further operable to execute the code to cause the UE to:perform the one or more CSI measurements in accordance with the first resource type, wherein the first resource type is the periodic resource type based at least in part on the second resource type being the periodic resource type.6.The UE of claim 1, wherein the first configuration information being indicative of the first resource type is based at least in part on the second configuration information comprising an indication of the second resource type, wherein the first resource type and the second resource type are a same resource type, and wherein the same resource type is a periodic resource type.7.The UE of claim 1, wherein the first configuration information comprises an indication of the first resource type from the set of resource types comprising the aperiodic resource type and the semi-persistent resource type, and wherein the second configuration information comprises an indication of the second resource type, the second resource type being a periodic resource type.8.The UE of claim 1, wherein the first configuration information being indicative of the first resource type is based at least in part on the second configuration information comprising an indication of the first resource type.9.The UE of claim 8, wherein the set of resource types further comprises a periodic resource type and, wherein, to perform the one or more CSI measurements in accordance with the first configuration information, the one or more processors are individually or collectively further operable to execute the code to cause the UE to:perform the one or more CSI measurements in accordance with the first resource type based at least in part on the first resource type being associated with a higher priority than the second resource type.10.The UE of claim 8, wherein, to perform the one or more CSI measurements in accordance with the first configuration information, the one or more processors are individually or collectively operable to execute the code to cause the UE to:perform the one or more CSI measurements in accordance with the first resource type, wherein the first resource type is the aperiodic resource type or the semi-persistent resource type based at least in part on the second resource type being a periodic resource type.11.The UE of claim 1, wherein the set of resource types further comprises a periodic resource type.12.The UE of claim 1, wherein the one or more CSI-RS resources are associated with a CSI-RS resource set.13.The UE of claim 1, wherein the first configuration information is further indicative of any combination of a CSI resource configuration identifier, one or more CSI synchronization signal block (SSB) resources, and one or more LTM candidate identifiers.14.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a second control message that activates or deactivates the CSI reporting for LTM, where the second control message is indicative of at least one LTM candidate identifier, one or more first semi-persistent CSI-RS resources, and one or more first TCI states associated with the one or more first semi-persistent CSI-RS resources, and wherein performing the one or more CSI measurements for LTM in accordance with the first configuration information is based at least in part on receiving the second control message activating the CSI reporting for LTM.15.The UE of claim 14, wherein the second control message further comprises an LTM indicator, the LTM indicator indicating that the second control message is associated with the CSI reporting for LTM.16.The UE of claim 14, wherein the second control message further comprises a logical channel identifier, and wherein the second control message is associated with CSI reporting based at least in part on the logical channel identifier.17.The UE of claim 14, wherein both the one or more first semi-persistent CSI-RS resources and the one or more first TCI states are associated with a first configuration for first LTM candidate of a set of LTM candidates, wherein the second control message is further indicative of one or more second semi-persistent CSI-RS resources and one or more second TCI states associated with the one or more second semi-persistent CSI-RS resources, and wherein both the one or more second semi-persistent CSI-RS resources and the one or more second TCI states are associated with a second configuration for second LTM candidate of the set of LTM candidates.18.The UE of claim 17, wherein the second control message comprises a first field indicating a last octet associated with the first configuration.19.The UE of claim 14, wherein the one or more first semi-persistent CSI-RS resources are associated with a first semi-persistent CSI-RS resource set, and wherein the second control message is indicative of the one or more first semi-persistent CSI-RS resources based at least in part on the second control message indicating a first semi-persistent CSI-RS resource set identifier associated with the first semi-persistent CSI-RS resource set.20.The UE of claim 14, wherein the second control message indicates each of the one or more first semi-persistent CSI-RS resources via a respective semi-persistent CSI-RS resource identifier, and wherein each of the one or more first semi-persistent CSI-RS resources is associated with a respective first TCI state of the one or more first TCI states.21.The UE of claim 14, wherein the second control message is indicative of a plurality of LTM candidate identifiers comprising the at least one LTM candidate identifier, and wherein the second control message is indicative of a plurality of LTM candidate identifiers based at least in part on the second control message comprising an identifier associated with the first configuration information.22.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a third control message indicative of third configuration information, wherein the third configuration information is indicative of a serving cell identifier, an index associated with an aperiodic trigger state, a first quantity of one or more first aperiodic CSI-RS resources, and the one or more first aperiodic CSI-RS resources.23.The UE of claim 22, wherein the third control message is indicative of a first LTM candidate identifier associated with both the first quantity of one or more first aperiodic CSI-RS resources and the one or more first aperiodic CSI-RS resources, and wherein the third control message is further indicative a second quantity of one or more second aperiodic CSI-RS resources, the one or more second aperiodic CSI-RS resources, and a second LTM candidate identifier associated with both the second quantity of one or more first aperiodic CSI-RS resources and the one or more second aperiodic CSI-RS resources.24.The UE of claim 22, wherein the one or more first aperiodic CSI-RS resources are associated with one or more first aperiodic CSI-RS resource sets.25.The UE of claim 1, wherein the one or more processors are individually or collectively further operable to execute the code to cause the UE to:receive a fourth control message indicative of third configuration information, wherein the third configuration information is indicative of an LTM candidate identifier, one or more aperiodic CSI-RS resources, and one or more TCI states.26.The UE of claim 25, wherein the one or more aperiodic CSI-RS resources are associated with one or more aperiodic CSI-RS resource sets, and wherein each of the one or more aperiodic CSI-RS resource sets are associated with a respective subset of the one or more TCI states.27.The UE of claim 25, wherein each of the one or more aperiodic CSI-RS resources are associated with a respective subset of the one or more TCI states.28.A network entity, comprising:one or more memories storing processor-executable code; andone or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the network entity to:transmit a first control message indicative of first configuration information associated with channel state information (CSI) reporting for Layer 1 / Layer 2 triggered mobility (LTM) , wherein the first configuration information is indicative of second configuration information associated with one or more CSI-reference signal (CSI-RS) resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types comprising at least an aperiodic resource type and semi-persistent resource type, and wherein the one or more CSI-RS resources are associated with a second resource type for transmission configuration indicator (TCI) state management; andtransmit one or more CSI-RS for LTM in accordance with the first configuration information.29.A method for wireless communications at a user equipment (UE) , comprising:receiving a first control message indicative of first configuration information associated with channel state information (CSI) reporting for Layer 1 / Layer 2 triggered mobility (LTM) , wherein the first configuration information is indicative of second configuration information associated with one or more CSI-reference signal (CSI-RS) resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types comprising at least an aperiodic resource type and semi-persistent resource type, and wherein the one or more CSI-RS resources are associated with a second resource type for transmission configuration indicator (TCI) state management; andperforming one or more CSI measurements for LTM in accordance with the first configuration information.30.A method for wireless communications at a network entity, comprising:transmitting a first control message indicative of first configuration information associated with channel state information (CSI) reporting for Layer 1 / Layer 2 triggered mobility (LTM) , wherein the first configuration information is indicative of second configuration information associated with one or more CSI-reference signal (CSI-RS) resources and is indicative of a first resource type associated with the one or more CSI-RS resources, the first resource type being from a set of resource types comprising at least an aperiodic resource type and semi-persistent resource type, and wherein the one or more CSI-RS resources are associated with a second resource type for transmission configuration indicator (TCI) state management; andtransmitting one or more CSI-RS for LTM in accordance with the first configuration information.
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