Channel state information scheduling request

Abstract

Methods, systems, and devices for wireless communication are described. A device, which can additionally be referred to as a user equipment (UE), can support channel state information (CSI) operations, such as CSI reporting. The UE can identify a change in CSI related to communications with a base station or any other change in communications with the base station. The UE can transmit, to the base station, a CSI scheduling request based on the change in CSI, which can include an indication to activate or grant resources for a CSI report transmission from the UE to the base station. The UE can receive, from the base station, a CSI report trigger based on the CSI scheduling request, and transmit a CSI report over a physical layer uplink channel (e.g., a physical uplink shared channel (PUSCH)) in response to receiving the CSI report trigger.

Description

[0001] Cross-references

[0002] This patent application claims the benefit of U.S. Provisional Patent Application No. 62 / 965,114, entitled “Channel State Information Scheduling Request”, filed January 23, 2020, and U.S. Patent Application No. 17 / 154,397, entitled “Channel State Information Scheduling Request”, filed January 21, 2021, by Chande et al., each of which is assigned to the assignee of this application. Technical Field

[0003] The following pertains to wireless communication, and more specifically, to Channel State Information (CSI) scheduling requests.

[0004] background

[0005] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, broadcasting, and so on. These systems can support communication with multiple users by sharing 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-A 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 can employ various technologies, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM).

[0006] Wireless multiple access communication systems may include one or more base stations or one or more network access nodes, each of which simultaneously supports communication from multiple communication devices, which may also be referred to as user equipment (UE). Some wireless communication systems (such as 4G and 5G systems) can support Channel State Information (CSI) operation. However, with increasing demands for communication efficiency, some wireless communication systems (such as 4G and 5G systems) may not be able to provide satisfactory CSI operation, and therefore may not be able to support high-reliability or low-latency communication.

[0007] Overview

[0008] The described aspects of the technology involve configuring communication equipment (which may be user equipment (UE)) to support Channel State Information (CSI) operations, such as CSI reporting in wireless communication systems. The described technology can be used to configure communication equipment with CSI reporting configuration to extend the coverage of CSI reporting (e.g., non-periodic CSI reporting, semi-persistent CSI reporting). For example, CSI reporting configuration can configure the communication equipment to transmit a CSI scheduling request (also known as CSI-SR) to another communication equipment in response to a change in CSI related to communication with that other communication equipment (e.g., a next-generation B-node or a gigabit B-node, either of which may be referred to as a gNB)).

[0009] CSI scheduling requests may carry indications for activating or granting resources for CSI reporting to the other communication device. In some examples, CSI reporting configurations may configure the communication device to have various CSI scheduling triggers for CSI scheduling requests, as described herein. The communication device may transmit a CSI report to the other communication device in response to a CSI scheduling request. Thus, the communication device may be configured to support CSI operation, for example, in a 5G system (which may be referred to as a New Radio (NR) system). The described techniques may include features for improving power consumption and, in some examples, enhanced efficiency for high reliability and low latency operation in 5G systems, among other benefits.

[0010] A method for wireless communication at a UE is described. The method may include transmitting a CSI scheduling request to a base station, receiving a CSI report trigger based on the CSI scheduling request from the base station, and transmitting the CSI report via a physical layer uplink channel in response to receiving the CSI report trigger.

[0011] An apparatus for wireless communication is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. These instructions are executable by the processor to cause the apparatus to: transmit a CSI scheduling request to a base station; receive a CSI report trigger based on the CSI scheduling request from the base station; and, in response to receiving the CSI report trigger, transmit a CSI report via a physical layer uplink channel.

[0012] Another device for wireless communication is described. This device may include means for: transmitting a CSI scheduling request to a base station, receiving a CSI report trigger based on the CSI scheduling request from the base station, and transmitting a CSI report via a physical layer uplink channel in response to receiving the CSI report trigger.

[0013] A non-transient computer-readable medium is described, storing code for wireless communication at a UE. The code may include instructions executable by a processor to: transmit a CSI scheduling request to a base station, receive a CSI report trigger based on the CSI scheduling request from the base station, and transmit a CSI report via a physical layer uplink channel in response to receiving the CSI report trigger.

[0014] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for identifying changes in CSI related to communication with the base station at the UE, wherein a CSI scheduling request is transmitted based on the identification.

[0015] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for including in a CSI scheduling request a first indication of resources that the base station may activate or authorize for CSI report transmissions from the UE to the base station.

[0016] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, receiving a CSI report trigger may include operations, features, means, or instructions for receiving a second indication that resources for CSI report transmission have been activated or authorized.

[0017] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, transmitting a CSI scheduling request may include operations, features, means, or instructions for transmitting the CSI scheduling request on one or more dedicated resources or via a physical layer uplink channel carrying Hybrid Automatic Repeat Request (HARQ) information or a combination thereof.

[0018] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the one or more dedicated resources may be different from the scheduling request resources associated with scheduling requests for uplink transmissions other than CSI report transmissions.

[0019] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the CSI scheduling request may be a bit indication.

[0020] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the CSI report triggers downlink control information (DCI) signaling or media access control element (MAC-CE) signaling.

[0021] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, transmitting a CSI scheduling request may include operations, features, means, or instructions for transmitting the CSI scheduling request via a resource associated with one or more probe reference signals (SRS).

[0022] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means, or instructions for partitioning resources associated with the one or more SRSs, wherein the partitioning includes an indication of the presence of a CSI scheduling request.

[0023] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, devices, or instructions that autonomously generate CSI scheduling requests.

[0024] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for detecting a CSI scheduling request trigger and generating a CSI scheduling request based on the CSI scheduling request trigger.

[0025] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, detecting a CSI scheduling request trigger may include operations, features, means, or instructions for identifying channel interference measurements associated with a prior CSI report preceding the CSI report, and comparing the channel interference measurements associated with that prior CSI report with one or more other prior CSI reports.

[0026] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, detecting a CSI scheduling request trigger may include operations, features, means, or instructions for receiving one or more packets according to a modulation and coding scheme (MCS) and determining that the MCS satisfies a threshold based on a log-likelihood ratio associated with decoding the one or more packets, wherein generating a CSI scheduling request may be based on determining that the MCS satisfies the threshold.

[0027] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, detecting a CSI scheduling request trigger may include operations, features, means, or instructions for determining an uplink power level based on a maximum permissible exposure limit, wherein generating a CSI scheduling request may be based on determining that uplink power level.

[0028] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, detecting a CSI scheduling request trigger may include operations, features, means, or instructions for receiving one or more reserved signals in an unlicensed radio spectrum band, the one or more reserved signals including channel interference information, wherein generating a CSI scheduling request may be based on receiving the one or more reserved signals.

[0029] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, detecting a CSI scheduling request trigger may include operations, features, means, or instructions for: determining power clearance information, and determining a power clearance satisfaction threshold associated with uplink communication based on the power clearance information, wherein generating a CSI scheduling request may be based on the power clearance associated with uplink communication satisfying the threshold.

[0030] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, CSI reports include non-periodic CSI reports.

[0031] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, CSI reports include semi-persistent CSI reports.

[0032] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving signaling from a base station that includes a CSI scheduling request configuration, wherein the transmission of the CSI scheduling request is at least in part based on the CSI scheduling request configuration.

[0033] Some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein may further include operations, features, means, or instructions for identifying one or more resources for a CSI scheduling request, at least in part based on the CSI scheduling request configuration, wherein transmitting the CSI scheduling request includes transmitting the CSI scheduling request on the one or more pre-configured resources.

[0034] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means, or instructions for: determining a CSI scheduling request trigger based at least in part on a CSI scheduling request configuration including a threshold for CSI or a CSI-related parameter, or both; and generating a CSI scheduling request based at least in part on the CSI scheduling request trigger, wherein the transmission of the CSI scheduling request is based at least in part on the generation.

[0035] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the CSI scheduling request configuration corresponds to one or more directional beams transmitted by a base station.

[0036] A method for wireless communication at a base station is described. The method may include receiving a CSI scheduling request from a UE, transmitting a CSI report trigger based on the CSI scheduling request, and receiving a CSI report via a physical layer uplink channel in response to the CSI report trigger.

[0037] An apparatus for wireless communication is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. These instructions are executable by the processor to cause the apparatus to: receive a CSI scheduling request from a UE, transmit a CSI report trigger based on the CSI scheduling request, and receive a CSI report via a physical layer uplink channel in response to the CSI report trigger.

[0038] Another device for wireless communication is described. This device may include means for: receiving a CSI scheduling request from a UE, transmitting a CSI report trigger based on the CSI scheduling request, and receiving a CSI report via a physical layer uplink channel in response to the CSI report trigger.

[0039] A non-transient computer-readable medium is described, storing code for wireless communication at a base station. The code may include instructions executable by a processor for: receiving a CSI scheduling request from a UE, transmitting a CSI report trigger based on the CSI scheduling request, and receiving a CSI report via a physical layer uplink channel in response to the CSI report trigger.

[0040] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for: identifying in a CSI scheduling request a first indication regarding resources that the base station may activate or grant for CSI report transmission from the UE to the base station, and activating or granting the resources for such CSI report transmission.

[0041] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, triggering the transmission of CSI reports may include operations, features, means, or instructions for transmitting a second indication that resources for the transmission of CSI reports have been activated or authorized.

[0042] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, receiving a CSI scheduling request may include operations, features, means, or instructions for receiving a CSI scheduling request on one or more dedicated resources or through a physical layer uplink channel carrying HARQ information or a combination thereof.

[0043] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, CSI scheduling requests may be transmitted in association with one or more dedicated resources, which may be different from the scheduling request resources associated with scheduling requests for uplink transmissions other than CSI report transmissions.

[0044] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the CSI scheduling request may be a bit indication.

[0045] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, CSI report triggering includes DCI signaling.

[0046] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, CSI report triggering includes MAC-CE signaling.

[0047] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, receiving a CSI scheduling request may include operations, features, means, or instructions for receiving a CSI scheduling request via one or more SRSs.

[0048] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the partitioning of one or more SRSs can be an indication of the presence of a CSI scheduling request.

[0049] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the partitioning of one or more SRSs may be an indication of the absence of a CSI scheduling request.

[0050] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, CSI reports include non-periodic CSI reports.

[0051] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, CSI reports include semi-persistent CSI reports.

[0052] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means, or instructions for: determining a CSI scheduling request trigger based at least in part on a CSI scheduling request configuration including a threshold for CSI or a CSI-related parameter, or both; and generating a CSI scheduling request based at least in part on the CSI scheduling request trigger, wherein the transmission of the CSI scheduling request is based at least in part on the generation.

[0053] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the CSI scheduling request configuration corresponds to one or more directional beams associated with the UE. Brief description of the attached diagram

[0055] Figure 1 and Figure 2 Examples of wireless communication systems that support Channel State Information (CSI) scheduling requests according to various aspects of this disclosure are explained.

[0056] Figure 3 An example of the process flow supporting CSI scheduling requests according to various aspects of this disclosure is explained.

[0057] Figure 4 and Figure 5 A block diagram of an apparatus supporting CSI scheduling requests according to various aspects of this disclosure is shown.

[0058] Figure 6 A block diagram of a user equipment (UE) communications manager supporting CSI scheduling requests is shown according to various aspects of this disclosure.

[0059] Figure 7 A diagram of a system including devices supporting CSI scheduling requests is shown according to various aspects of this disclosure.

[0060] Figure 8 and Figure 9 A block diagram of an apparatus supporting CSI scheduling requests according to various aspects of this disclosure is shown.

[0061] Figure 10 A block diagram of a base station communication manager supporting CSI scheduling requests according to various aspects of this disclosure is shown.

[0062] Figure 11 A diagram of a system including devices supporting CSI scheduling requests is shown according to various aspects of this disclosure.

[0063] Figures 12 to 16 A flowchart illustrating various aspects of supporting CSI scheduling requests according to this disclosure is shown.

[0064] Detailed description

[0065] Wireless communication systems may include multiple communication devices, such as user equipment (UEs) and base stations (which can provide wireless communication services to UEs). For example, such base stations may be next-generation B-nodes or gigabit B-nodes (either of which may be referred to as gNBs) supporting a variety of radio access technologies, including 4G systems (such as Long Term Evolution (LTE) systems) and 5G systems (which may be referred to as New Radio (NR) systems). Some UEs may support Channel State Information (CSI) operations, such as CSI reporting. However, these systems rely on base stations to schedule or activate CSI reporting for the UE. In some cases, if the UE determines a change in CSI and decides that providing an updated CSI report based on that change would be beneficial, the UE may wait until the next periodic CSI reporting opportunity or receive a CSI report request from the base station (for non-periodic reporting) to provide a new CSI report.

[0066] The described techniques can be used to configure a UE with CSI reporting configuration to extend the coverage of CSI reporting (e.g., aperiodic CSI reporting, semi-persistent CSI reporting). For example, CSI reporting configuration can configure the UE to transmit a CSI scheduling request (also known as a CSI-SR) to the base station in response to changes in CSI related to communication with the base station. The CSI scheduling request may carry an indication to the base station regarding the activation or authorization of resources for CSI reporting. In some examples, CSI reporting configuration can configure the UE to have various CSI reporting triggers in response to CSI scheduling requests, as described herein. The UE can transmit a CSI report to the base station in response to a CSI scheduling request.

[0067] Specific aspects of the subject matter described in this disclosure may be implemented to achieve one or more of the following potential advantages. The technology employed by the UE can provide benefits and enhancements to the operation of the UE. For example, when operating in a 5G system, the operations performed by the UE can provide improvements in directional communication. In some examples, configuring the UE in a 5G system to provide CSI scheduling requests for CSI reports, etc., can support improvements in power consumption, spectral efficiency, higher data rates, and in some examples, can promote enhanced efficiency for beam operation, among other benefits. The aspects of this disclosure are initially described in the context of a wireless communication system. The aspects of this disclosure are then illustrated and described by way of and reference to process flows relating to CSI scheduling. The aspects of this disclosure are further illustrated and described by way of and reference to apparatus diagrams, system diagrams, and flowcharts relating to CSI scheduling.

[0068] Figure 1Examples of a wireless communication system 100 supporting CSI scheduling requests according to various aspects of this disclosure are described. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, the wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0069] Base station 105 can be distributed across a geographical area to form wireless communication system 100, and can be different types of devices or devices with different capabilities. Base station 105 and UE 115 can communicate wirelessly via one or more communication links 125. Each base station 105 can provide a coverage area 110, and UE 115 and base station 105 can establish one or more communication links 125 on the coverage area 110. Coverage area 110 can be an example of a geographical area over which base station 105 and UE 115 can support signal communication according to one or more radio access technologies.

[0070] Each UE 115 can be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. Each UE 115 can be a different type of device or a device with different capabilities. Figure 1 The document describes some example UE 115s. The UE 115 described herein can communicate with various types of devices, such as other UE 115s, base station 105, or network equipment (e.g., core network nodes, relay equipment, integrated access and backhaul (IAB) nodes, or other network equipment). Figure 1 As shown in the image.

[0071] Each base station 105 may communicate with the core network 130, or with each other, or both. For example, base station 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base stations 105 may communicate with each other directly (e.g., directly between base stations 105), indirectly (e.g., via the core network 130), or directly and indirectly on backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, backhaul link 120 may be or include one or more radio links.

[0072] One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, base transceiver station, radio base station, access point, radio transceiver, B node, evolved B node (eNB), next-generation B node or gigabit B node (any of which may be referred to as gNB), home B node, home evolved B node, or other suitable terms.

[0073] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a unit, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0074] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, as well as base station 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc. Figure 1 As shown in the image.

[0075] UE 115 and base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the radio spectrum band (e.g., a bandwidth portion (BWP)) operating according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating carrier operation, user data, or other signaling. Wireless communication system 100 may support communication with UE 115 using carrier aggregation or multi-carrier operation. UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation may be used in conjunction with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0076] In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition signaling or control signaling to coordinate the operation of other carriers. The carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid for discovery by UE 115. The carrier may operate in an autonomous mode in which initial acquisition and connection can be performed by UE 115 via that carrier, or in a non-autonomous mode in which the carrier may connect to carriers anchored using different carriers (e.g., different carriers of the same or different radio access technologies).

[0077] The communication link 125 shown in the wireless communication system 100 may include uplink transmission from UE 115 to base station 105, or downlink transmission from base station 105 to UE 115. The carrier may carry downlink or uplink communication (e.g., in FDD mode), or may be configured to carry both downlink and uplink communication (e.g., in TDD mode).

[0078] A carrier may be associated with a specific bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of several defined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz) of a carrier for a particular radio access technology. Devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have a hardware configuration that supports communication over a specific carrier bandwidth, or may be configurable to support communication over a single carrier bandwidth within a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate over a portion (e.g., a subband, BWP) or all of the carrier bandwidth.

[0079] The signal waveform transmitted on the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and subcarrier spacing are inversely related. The number 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). Thus, the more resource elements the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate the UE 115 can achieve. Wireless communication resources can refer to a combination of radio frequency spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and using multiple spatial layers can further improve the data rate or data integrity of communication with the UE 115.

[0080] One or more parameter designs for a carrier can be supported, where the parameter design may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier can be divided into one or more BWPs with the same or different parameter designs. In some examples, UE 115 can be configured with multiple BWPs. In some examples, a single BWP for a carrier can be active at a given time, and communication for UE 115 can be limited to one or more active BWPs.

[0081] The time interval of base station 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period T. s =1 / (Δf) max ·N f ) seconds, where Δf max This can represent the maximum supported subcarrier spacing, while N f This can represent the maximum supported Discrete Fourier Transform (DFT) size. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0082] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into several time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include several symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple mini-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N) symbols. f (Number) sampling periods. The duration of a symbol period can depend on the subcarrier interval or the operating frequency band.

[0083] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into several time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include several symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple mini-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N) symbols. f (Number) sampling periods. The duration of a symbol period can depend on the subcarrier interval or the operating frequency band.

[0084] Physical channels can be multiplexed on a carrier using various techniques. Physical control channels and physical data channels can be multiplexed on a downlink carrier, for example, using one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques. A control region (e.g., a control resource set (CORESET)) for physical control channels can be defined by the number of symbol periods and can extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESET) can be configured for a set of UEs 115. For example, one or more UEs 115 can monitor or search control regions for control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for control channel candidates can refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information in a control information format having a given payload size. The search space set may include a shared search space set configured to send control information to multiple UEs 115 and a UE-specific search space set configured to send control information to a particular UE 115.

[0085] Each base station 105 may provide communication coverage via one or more cells (e.g., macrocells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with base station 105 (e.g., on a carrier) and may be associated with an identifier used to distinguish adjacent cells (e.g., Physical Cell Identifier (PCID), Virtual Cell Identifier (VCID), or others). In some examples, a cell may also refer to a geographic coverage area 110 or a portion of geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. The extent of such cells may vary from smaller areas (e.g., structures, subsets of structures) to larger areas depending on various factors (such as the capabilities of base station 105). For example, a cell may be or include buildings, subsets of buildings, or external space between or overlapping geographic coverage areas 110, among other examples.

[0086] Macrocells cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access for UEs 115 that have service subscriptions with a network provider supporting the macrocell. Small cells may be associated with a lower-power base station 105 (compared to macrocells) and may operate in the same or different (e.g., licensed or unlicensed) frequency bands as macrocells. Small cells may provide unrestricted access to UEs 115 that have service subscriptions with a network provider, or may provide restricted access to UEs 115 associated with a small cell (e.g., UEs 115 in a Closed Subscriber Group (CSG), or UEs 115 associated with a user in a home or office). Base station 105 may support one or more cells and may also support communication on one or more cells using one or more component carriers.

[0087] In some examples, a carrier can support multiple cells and can be configured with different cells based on different protocol types that can provide access for different types of devices (e.g., MTC, Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB)).

[0088] In some examples, base station 105 may be mobile, and thus provide communication coverage to mobile geographic coverage areas 110. In some examples, different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. Wireless communication system 100 may include, for example, a heterogeneous network, in which different types of base stations 105 use the same or different radio access technologies to provide coverage to various geographic coverage areas 110.

[0089] The wireless communication system 100 can support synchronous or asynchronous operation. For synchronous operation, base stations 105 can have similar frame timing, and transmissions from different base stations 105 can be approximately time-aligned. For asynchronous operation, base stations 105 can have different frame timing, and transmissions from different base stations 105 may not be time-aligned in some examples. The techniques described herein can be used for both synchronous and asynchronous operation.

[0090] Some UE 115 devices (such as MTC or IoT devices) can be low-cost or low-complexity devices and can provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC can refer to data communication technologies that allow devices to communicate with each other or with base station 105 without human intervention. In some examples, M2M communication or MTC may include communication from devices that have integrated sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents it to people interacting with the application. Some UE 115 devices may be designed to collect information or automate the behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wilderness survival monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial toll collection.

[0091] Some UEs 115 can be configured to operate in reduced-power modes, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but not simultaneous transmission and reception). In some examples, half-duplex communication can be performed at a reduced peak rate. Other power-saving techniques for UEs 115 include entering a power-saving deep sleep mode when not engaged in active communication, operating on limited bandwidth (e.g., according to narrowband communication), or a combination of these techniques. For example, some UEs 115 can be configured to operate using a narrowband protocol type associated with a defined portion or range (e.g., subcarriers or resource block (RB) set) within the carrier, within the carrier's guard band, or outside the carrier.

[0092] Wireless communication system 100 may be configured to support ultra-reliable communication or low latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low latency communication (URLLC) or mission-critical communication. UE 115 may be designed to support ultra-reliable, low latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication may include private or group communication and may be supported by one or more mission-critical services, such as Mission-Critical Talk-to-Talk (MCPTT), Mission-Critical Video (MCVideo), or Mission-Critical Data (MCData)). Support for mission-critical functions may include prioritization of services, and mission-critical services may be used for public safety or general business applications. The terms ultra-reliable, low latency, mission-critical, and ultra-reliable low latency are used interchangeably herein.

[0093] In some examples, UE 115 may also be able to communicate directly with other UE 115 on a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UE 115s utilizing D2D communication may be within the geographic coverage area 110 of base station 105. Other UE 115s in such a group may be outside the geographic coverage area 110 of base station 105 or may be unable to receive transmissions from base station 105 for other reasons. In some examples, groups of UE 115s communicating via D2D communication may utilize a one-to-many (1:M) system, where each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between the individual UE 115s without involving base station 105.

[0094] In some systems, the D2D communication link 135 may be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles may communicate using vehicle-to-vehicle (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these communications. Vehicles may signal information relating to traffic conditions, signaling, weather, safety, emergencies, or any other information relevant to the V2X system. In some examples, vehicles in a V2X system may communicate via vehicle-to-network (V2N) communication through one or more network nodes (e.g., base station 105) with roadside infrastructure (such as roadside units), or with the network, or with both.

[0095] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC). The EPC or 5GC may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) for routing packets or interconnecting to external networks. The control plane entity manages non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by base station 105 associated with core network 130. User IP packets can be delivered through the user plane entity, which provides IP address allocation and other functions. The user plane entity can connect to network operator IP service 150. Carrier IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0096] Some network devices (such as base station 105) may include sub-components, such as access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with each UE 115 through one or more other access network transport entities 145, which may be referred to as a radio headend, smart radio headend, or transmit / receive point (TRP). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio headends and ANCs) or combined into a single network device (e.g., base station 105).

[0097] Wireless communication system 100 can operate using one or more frequency bands in the range of 300 MHz to 300 GHz. The 300 MHz to 3 GHz band is referred to as a UHF band or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter. UHF waves can be blocked or redirected by buildings and environmental features, but these waves can penetrate various structures sufficiently for macrocells to provide service to UE 115 located indoors. Compared to transmissions using smaller frequencies and longer waves in the lower HF or VHF portions of the spectrum below 300 MHz, UHF wave transmission can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0098] The wireless communication system 100 can also operate in the ultra-high frequency (SHF) zoning of the band from 3 GHz to 30 GHz (also known as the centimeter band) or in the extremely high frequency (EHF) zoning of the spectrum (e.g., from 30 GHz to 300 GHz) (also known as the millimeter band). In some examples, the wireless communication system 100 can support millimeter-wave (mmW) communication between the UE 115 and the base station 105, and the EHF antennas of the corresponding devices can be smaller and more closely spaced than UHF antennas. In some examples, this can facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may suffer even greater atmospheric attenuation and shorter range than SHF or UHF transmissions. The techniques disclosed herein can be employed across transmissions using one or more different frequency zonings, and the frequency band usage specified across these frequency zonings may vary by country or regulatory authority.

[0099] Wireless communication system 100 may utilize both licensed and unlicensed radio spectrum bands. For example, wireless communication system 100 may employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating in unlicensed radio spectrum bands, devices (such as base station 105 and UE 115) may employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed frequency bands may be based on carrier aggregation configuration (e.g., LAA) in coordination with component carriers operating in licensed frequency bands. Operation in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, etc.

[0100] Base station 105 or UE 115 may be equipped with multiple antennas that can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels that can support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may coexist at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have an antenna array with several rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0101] Base station 105 or UE 115 can use MIMO communication to leverage multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. This technique is known as spatial multiplexing. For example, a transmitting device may transmit multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device may receive multiple signals via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), where multiple spatial layers are transmitted to the same receiving device; and multi-user MIMO (MU-MIMO), where multiple spatial layers are transmitted to multiple devices.

[0102] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., base station 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array, such that some signals propagating relative to a particular orientation of the antenna array experience constructive interference, while others experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include the transmitting or receiving device applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with that device. The adjustments associated with each antenna element may be defined by a beamforming weight set associated with a particular orientation (e.g., the antenna array relative to the transmitting or receiving device, or relative to some other orientation).

[0103] Base station 105 or UE 115 may use beamsweeping techniques as part of beamforming operations. For example, base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) for beamforming operations to facilitate directional communication with UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by base station 105 in different directions. For example, base station 105 may transmit signals based on different beamforming weight sets associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by the transmitting device (such as base station 105) or the receiving device (such as UE 115)) to identify the beam direction that base station 105 uses for later transmission or reception.

[0104] Some signals (such as data signals associated with a specific receiving device) may be transmitted by base station 105 in a single beam direction (e.g., the direction associated with the receiving device (such as UE 115)). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on the signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signals received by UE 115 with the highest signal quality or other acceptable signal quality.

[0105] In some examples, transmissions performed by a device (e.g., by base station 105 or UE 115) may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate combined beams for transmission (e.g., from base station 105 to UE 115). UE 115 may report feedback indicating precoding weights for one or more beam directions, and this feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. Base station 105 may transmit reference signals that can be precoded or uncoded (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)). UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel type codebook, linear combination type codebook, port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify the beam direction used by UE 115 for subsequent transmission or reception) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0106] Base station 105 can be configured with CSI reporting configuration to extend the coverage of CSI reporting (e.g., non-periodic CSI reporting, semi-persistent CSI reporting) and manage or improve directed communication between base station 105 and UE 115. For example, CSI reporting configuration can configure UE 115 to transmit a CSI scheduling request (also known as a CSI-SR) to base station 105 in response to changes in CSI related to communication with base station 105. The CSI scheduling request may carry an indication to base station 105 of activating or granting resources for CSI reporting. In some examples, CSI reporting configuration can configure UE 115 to have various CSI scheduling triggers for CSI scheduling requests, as described herein. UE 115 can transmit a CSI report to base station 105 in response to a CSI scheduling request. Thus, UE 115 can be configured to support CSI operation, for example, in a 5G system (which may be referred to as an NR system).

[0107] A receiver device (e.g., UE 115) may attempt multiple receive configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105. For example, the receiver device may attempt multiple receive directions by: receiving via different antenna subarrays; processing received signals according to different antenna subarrays; receiving according to different sets of receive beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets); or processing received signals according to different sets of receive beamforming weights applied to signals received at multiple antenna elements of the antenna array, any of which may be referred to as "listening" according to different receive configurations or receive directions. In some examples, the receiver device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal). The single receive configuration may be aligned on a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0108] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer can be IP-based. The Radio Link Control (RLC) layer performs packet segmentation and reassembly for communication on logical channels. The Media Access Control (MAC) layer performs priority handling and multiplexing of logical channels into transport channels. The MAC layer can also use error detection, error correction, or both to support MAC layer retransmissions to improve link efficiency. In the control plane, the Radio Resource Control (RRC) protocol layer can provide the establishment, configuration, and maintenance of RRC connections between the UE 115 and the base station 105 or core network 130 that support user plane data radio bearers. At the physical layer, transport channels can be mapped to physical channels.

[0109] UE 115 and base station 105 can support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique used to increase the likelihood of correct data reception on communication link 125. HARQ may include a combination of error detection (e.g., using Cyclic Redundancy Check (CRC)), forward error correction (FEC), and retransmission (e.g., Automatic Repeat Request (ARQ)). HARQ can improve MAC layer throughput in poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, the device may support simultaneous time-slot HARQ feedback, where the device can provide HARQ feedback in a specific time slot for data received in previous symbols within that time slot. In other cases, the device may provide HARQ feedback in subsequent time slots or according to some other time interval.

[0110] Figure 2 Examples of a wireless communication system 200 supporting CSI scheduling requests according to various aspects of this disclosure are described. In some examples, the wireless communication system 200 may implement aspects of the wireless communication system 100. For example, the wireless communication system 200 may include a base station 105 and a UE 115 within a geographic coverage area 110. The base station 105 and the UE 115 may be referenced... Figure 1 Examples of corresponding devices are described. In some examples, the wireless communication system 200 may support multiple radio access technologies, including 4G systems (such as LTE systems, LTE-A systems, or LTE-A Pro systems) and 5G systems (which may be referred to as NR systems). The wireless communication system 200 may support improvements in power consumption, spectral efficiency, higher data rates, and in some examples, enhanced efficiency for high reliability and low latency CSI operation, etc.

[0111] Base station 105 and UE 115 may be configured with multiple antennas, which can be used to employ techniques such as transmit diversity, receive diversity, MIMO communication, or beamforming, or any combination thereof. The antennas of base station 105 and UE 115 may be located within one or more antenna arrays or antenna panels that can support MIMO operation or transmit or receive beamforming. For example, the antennas or antenna arrays of base station 105 may coexist at an antenna assembly (such as an antenna tower). In some examples, the antennas or antenna arrays associated with base station 105 may be located in different geographical locations. Base station 105 may have an antenna array with several rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panels may support radio frequency beamforming for signals transmitted via one or more antenna ports. Base station 105 and UE 115 can therefore be configured to support directional communication 205 using multiple antennas.

[0112] UE 115 in wireless communication system 200 may support CSI operation to conserve resources (e.g., time and frequency resources of wireless communication system 200), UE 115 battery life, etc. In some examples, UE 115 may be configured to support CSI operation to manage or improve directed communication 205 between base station 105 and UE 115. For example, base station 105 may transmit a CSI report configuration, and UE 115 may receive this CSI report configuration, which can be used to configure UE 115 to have CSI operation. With increasing demands for communication efficiency, some wireless communication systems (such as 4G and 5G systems) may not be able to provide satisfactory CSI operation (e.g., CSI reporting), and therefore may not be able to support high reliability or low latency communication, etc.

[0113] In 5G systems, for example, in mmW (millimeter wave) operation in frequency range 2 (FR2) and in high-frequency band deployments (>52 GHz), the interference conditions experienced by UE 115 can vary over short periods due to the use of directional communication 205 and beamforming gain. Therefore, the reported CSI information may be outdated, as it may no longer reflect accurate channel and interference conditions, which can be costly for downlink performance from base station 105 to UE 115 and uplink performance from UE 115 to base station 105. Furthermore, the overhead associated with CSI reporting (e.g., larger bandwidth and shorter slot duration) can result in a larger number of slots between two CSI reports from UE 115 (e.g., two periodic CSI reports). This can impose a higher relative penalty on outdated CSI information. For example, with a periodic CSI reporting period of 1 millisecond per report, one CSI report might have to be used for up to 64 slots to operate at a subcarrier spacing (SCS) of 960 kHz.

[0114] To address the aforementioned need for communication efficiency and avoid obsolete CSI information, UE 115 can be configured to support CSI operation to manage or improve directional communication 205 with base station 105. In some examples, base station 105 can transmit a CSI report configuration, and UE 115 can receive this CSI report configuration, which can be used to configure UE 115 to have CSI operation. In some examples, CSI operation may include providing a CSI scheduling request 210 to base station 105 via directional communication 205. For example, UE 115 may identify changes in CSI related to directional communication 205 or any other changes associated with directional communication 205 (such as bandwidth portion (BWP) changes). As a result, UE 115 may transmit the CSI scheduling request 210 to base station 105 via directional communication 205 (e.g., Physical Uplink Control Channel (PUCCH), Physical Uplink Shared Channel (PUSCH)).

[0115] UE 115 may include an indication in CSI scheduling request 210 regarding resources that base station 105 should activate or grant for CSI reporting 220. In other words, CSI scheduling request 210 may be a message from UE 115 to base station 105 to activate or grant, or activate and grant, resources for CSI reporting 220 to UE 115, and this message may carry new CSI information based on changes in CSI related to directed communication 205. These resources may include time and frequency resources, such as symbols, mini-slots or slots, subcarriers, carriers, or any combination thereof. Upon receiving CSI scheduling request 210, base station 150 may activate or grant, or activate and grant, the resources for CSI reporting 220.

[0116] In some examples, base station 105 may transmit a CSI report trigger 215, which may carry an indication that resources for CSI report transmission have been activated or granted. For example, base station 105 may transmit CSI report trigger 215 via DCI signaling, MAC-CE signaling, or a combination thereof. In response to receiving CSI report trigger 215, UE 115 may generate a CSI report 220 and transmit the CSI report 220 to base station 105 via directed communication 205. CSI report 220 may include one or more CSI parameters. In some examples, UE 115 may generate CSI report 220 including one or more CSI parameters based on measurements of one or more reference signals, such as a Synchronization Signal Physical Broadcast Channel (SS / PBCH) block (SSB) or CSI-RS from base station 105. For example, base station 105 can transmit one or more SSBs or CSI-RS via directional communication 205 between base station 105 and UE 115, and UE 115 can receive one or more SSBs or CSI-RS via the directional communication 205.

[0117] One or more CSI parameters may include one or more of the Channel Quality Indicator (CQI), PMI, or CSI Reference Signaling (CSI-RS) Indicator (CRI). In some other examples, one or more CSI parameters may additionally or alternatively include one or more of the Synchronization Signal Physical Broadcast Channel (SS / PBCH) Block Resource Indicator (SSBRI), Layer Indicator (LI), Rank Indicator (RI), or Layer 1 Reference Signaling Received Power (L1-RSRP). In some examples, UE 115 may determine LI in part based on CQI, PMI, RI, or CRI, or any combination thereof. In some examples, UE 115 may determine CQI in part based on PMI, RI, or CRI, or any combination thereof. In some examples, UE 115 may determine PMI in part based on RI or CRI, or both. UE 115 may determine RI in part based on CRI.

[0118] UE 115 may transmit CSI report 220 via directed communication 205. Directed communication 205 may include providing CSI report 220 on one or more physical channels (such as PUSCH, PUCCH, etc.). In some examples, CSI report 220 may be a non-periodic CSI report, and UE 115 may transmit a non-periodic CSI report on PUSCH according to CSI report configuration. In some examples, CSI report 220 may be a periodic CSI report, and UE 115 may use PUCCH to transmit periodic CSI reports according to CSI report configuration. Alternatively, CSI report 220 may be a semi-persistent CSI report, and UE 115 may use PUCCH or a DCI-activated PUSCH to transmit semi-persistent CSI reports according to CSI report configuration.

[0119] For example, the operations performed by base station 105 and UE 115 can thus provide improvements to directional operations in wireless communication system 200 and expand CSI reporting coverage. Furthermore, the operations performed by base station 105 and UE 115 can provide benefits and enhancements to the operation of UE 115. For example, by supporting CSI reporting dependent on CSI scheduling requests in wireless communication system 200, various operational characteristics (such as power consumption) can be reduced. The operations performed by base station 105 and UE 115 can also improve the efficiency of UE 115 by reducing latency associated with processes related to high-reliability and low-latency directional communication operations (such as beam management operations).

[0120] Figure 3 An example of a process flow 300 supporting CSI scheduling requests according to various aspects of this disclosure is explained. Process flow 300 can be implemented by referring to [references to other methods]. Figure 1 and 2 The wireless communication systems 100 and 200 are described in various aspects. For example, process flow 300 may be based on a configuration made by base station 105 or UE 115, and implemented by UE 115. Base station 105 and UE 115 may be as described in reference Figure 1 and 2 Examples of base stations and UEs described. In the following description of process flow 300, operations between base station 105 and UE 115 may be transmitted in a different order than the example order shown, or operations performed by base station 105 and UE 115 may be performed in a different order or at different times. Some operations may also be omitted from process flow 300, and other operations may be added to process flow 300.

[0121] At 305, base station 105 can transmit a CSI report configuration to UE 115, which may also include a CSI scheduling request configuration. In some examples, base station 105 may transmit the CSI report configuration via RRC signaling. The CSI report configuration can configure UE 115 to have CSI operations (such as CSI reporting, for example). Additionally, the CSI report configuration can configure UE 115 to have various CSI scheduling request triggers to extend the CSI report according to the CSI scheduling request, as described herein. UE 115 can manage or improve directional communication (e.g., one or more mmW directional beams) based on the CSI report configuration, the CSI scheduling request configuration, or both. For example, UE 115 can switch one or more mmW directional beams or modify parameters associated with one or more mmW directional beams based on the CSI report configuration, the CSI scheduling request configuration, or both.

[0122] At 310, UE 115 can detect changes in CSI or any other changes in communication with base station 105 (e.g., changes in BWP). For example, UE 115 can determine changes in one or more CSI values, which may include one or more of CQI, PMI, CRI, or any other relevant measurements. In some other examples, the one or more CSI parameters may additionally or alternatively include one or more of SSBRI, LI, RI, or L1-RSRP. In some examples, UE 115 may determine LI in part based on CQI, PMI, RI, or CRI, or any combination thereof. In some examples, UE 115 may determine CQI in part based on PMI, RI, or CRI, or any combination thereof. In some examples, UE 115 may determine PMI in part based on RI or CRI, or both. UE 115 may determine RI in part based on CRI.

[0123] At 315, UE 115 may transmit a CSI scheduling request to base station 105. The CSI scheduling request may carry an indication to base station 105 of activating or granting access to resources for periodic, aperiodic, or semi-persistent CSI reporting. In some examples, UE 115 may transmit the CSI scheduling request on one or more dedicated resources or via a physical layer uplink channel (e.g., PUSCH, PUCCH) carrying HARQ information, or a combination thereof. For example, UE 115 may piggyback on a physical layer uplink channel (e.g., PUSCH, PUCCH) carrying HARQ information. Therefore, the CSI scheduling request may be transmitted in association with one or more dedicated resources, which are different from the scheduling request resources associated with scheduling requests for uplink transmissions other than CSI reporting transmissions. In some examples, the CSI scheduling request may correspond to a separate request identifier, a separate resource identifier, and separate periodicity and offset.

[0124] In some other examples, UE 115 may transmit a CSI scheduling request on one or more reference signals, or the CSI scheduling request may be conveyed using one or more reference signals. For example, the CSI scheduling request may be a single-bit or multi-bit indication, which may utilize one or more probe reference signals (SRS) transmitted by UE 115. In some examples, the signature space (i.e., offset / cyclic shift) for the one or more SRS may be partitioned to convey the presence or absence of the CSI scheduling request. For example, UE 115 may partition the one or more SRS in a way that indicates the presence of a CSI scheduling request. Alternatively, UE 115 may partition the one or more SRS in a way that indicates the absence of a CSI scheduling request.

[0125] In some examples, UE 115 can autonomously generate and transmit CSI scheduling requests. Alternatively, UE 115 can transmit a CSI scheduling request based on a CSI scheduling request trigger in response to a change in CSI. For example, UE 115 can identify channel interference measurements associated with previous CSI reports, compare the channel interference measurements associated with previous CSI reports with one or more channel interference measurements associated with other previous CSI reports. In other words, UE 115 can store channel interference measurements used for previously transmitted CSI reports and compare them with the corresponding latest channel interference measurements. Therefore, CSI scheduling request triggering can be based on the determination of changes in channel interference measurements based on this comparison. Thus, UE 115 can generate a CSI scheduling request based on the comparison of the stored channel interference measurements used for previously transmitted CSI reports with the corresponding latest channel interference measurements and transmit the CSI scheduling request to base station 105.

[0126] In some other examples, UE 115 may receive one or more packets based on the MCS and determine the MCS satisfaction threshold in part based on the log-likelihood ratio associated with decoding the one or more packets. In other words, UE 115 may determine the scheduled MCS satisfaction threshold (e.g., an MCS threshold) for control or data, or both, based on the log-likelihood ratio. Therefore, CSI scheduling request triggering may be the determination of the scheduled MCS satisfaction threshold for control or data, or both. UE 115 may then generate a CSI scheduling request based on this determination and transmit it to base station 105. In other examples, UE 115 may determine the uplink power level based on the maximum permissible illumination. In other words, UE 115 may determine the presence of congestion between UE 115 and base station 105 through another device or object (e.g., through a mechanism for determining the choke uplink power required for the maximum permissible illumination). Therefore, CSI scheduling request triggering may be the determination of the uplink power level. Therefore, UE 115 can generate a CSI scheduling request based on this determination and transmit the CSI scheduling request to base station 105.

[0127] In some other examples, UE 115 can receive and decode one or more reserved signals in an unlicensed RF band. These reserved signals may include channel interference information. In other words, in unlicensed operation, UE 115 can decode one or more reserved signals from other devices (e.g., other UEs). The channel interference information may carry an indication of impending interference due to channel access by other devices. The channel interference information may also carry the type of interference (e.g., low-level interference, medium-level interference, high-level interference). A low-level interference condition may correspond to a first threshold (e.g., a traffic threshold), a medium-level interference condition may correspond to a second threshold (e.g., a traffic threshold) different from the first threshold (e.g., the first threshold may be less than the second threshold), and a high-level interference condition may correspond to a third threshold (e.g., a traffic threshold) different from the first and second thresholds (e.g., the first threshold may be less than the second threshold, and the second threshold may be less than the third threshold). Thus, UE 115 can generate a CSI scheduling request based on the one or more reserved signals received and decoded from other devices (e.g., other UEs) and transmit the CSI scheduling request to base station 105.

[0128] In some examples, UE 115 can determine power clearance information and, based on this information, determine a power clearance satisfaction threshold associated with uplink communication. For example, the satisfaction threshold (e.g., a power clearance limit) can indicate a new cell edge for UE 115. Therefore, CSI scheduling request triggering can include this determination of the power clearance satisfaction threshold (e.g., a power clearance limit) associated with uplink communication. Consequently, UE 115 can generate a CSI scheduling request and transmit it to base station 105 to extend CSI and cover CSI information related to a new cell edge for UE 115.

[0129] At 320, upon receiving a CSI scheduling request, base station 105 may transmit a CSI report trigger. For example, base station 105 may activate or grant, or activate and grant, resources for CSI reporting. Therefore, the CSI report trigger may carry an indication that resources for CSI reporting have been activated or granted. In some examples, the CSI report trigger may be signaled via DCI signaling or MAC-CE signaling, and this CSI report trigger is used to trigger a CSI report and activate the resources requested by UE 115. At 325, UE 115 may transmit a CSI report to base station 105. For example, UE 115 may prepare and transmit an aperiodic or semi-persistent CSI report activated by base station 105. Therefore, in a 5G system, CSI reporting can be configured by RRC, and in the case of aperiodic and semi-persistent CSI reporting, the CSI report can be activated / triggered by DCI or MAC-CE in response to a CSI scheduling request.

[0130] Alternatively, in some examples, UE 115 may transmit CSI reports (e.g., pre-agreed CSI reports) on one or more pre-configured resources based on pre-configured triggers (e.g., power level, MCS threshold, hold signal), as described above. In some examples, UE 115 may transmit CSI reports (e.g., pre-agreed CSI reports) on one or more pre-configured resources regardless of DCI or MAC-CE activation from base station 105. In other words, there may be no subsequent DCI or MAC-CE activation from base station 105 for the CSI report, but UE 115 may still transmit pre-agreed CSI reports on one or more pre-configured resources.

[0131] Operations performed by base station 105 and UE 115 can thus provide improvements to CSI operations. For example, CSI operations performed in process flow 300 can reduce CSI reporting overhead and increase the reliability of CSI reports, as well as reduce resources used for outer-loop algorithms to obtain accurate MCS estimates under rapidly changing channel conditions. Furthermore, operations performed by base station 105 and UE 115 can provide benefits and enhancements to the operation of UE 115. For example, by supporting CSI reporting dependent on CSI scheduling requests, various operational characteristics (such as power consumption) can be reduced. UE 115 can also experience improved directional communication based on CSI operations performed in process flow 300. For example, one or more of the triggers described above can involve one or more mmW directional beams associated with UE 115. To improve directional communication, UE 115 can switch one or more mmW directional beams or modify parameters associated with one or more mmW directional beams (e.g., transmit power, receive power, orientation, beamwidth) based on one or more triggers.

[0132] Figure 4 A block diagram 400 of a device 405 supporting CSI scheduling requests according to various aspects of this disclosure is shown. Device 405 may be an example of various aspects of UE 115 as described herein. Device 405 may include a receiver 410, a UE communication manager 415, and a transmitter 420. Device 405 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0133] Receiver 410 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to CSI scheduling). This information can be transmitted to other components of device 405. Receiver 410 can be a reference... Figure 7 Examples of various aspects of the transceiver 720 described. The receiver 410 may utilize a single antenna or an array of antennas.

[0134] The UE communication manager 415 can transmit a CSI scheduling request to the base station, receive a CSI report trigger based on the CSI scheduling request from the base station, and transmit a CSI report through the physical layer uplink channel in response to receiving the CSI report trigger. The UE communication manager 415 may be an example of various aspects of the UE communication manager 710 described herein.

[0135] The UE communication manager 415 or its sub-components may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functionality of the UE communication manager 415 or its sub-components may be performed by a general-purpose processor, DSP, application-specific integrated circuit (ASIC), field-programmable field array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described in this disclosure.

[0136] The UE communication manager 415 or its sub-components may be physically located in various locations, including being distributed such that parts of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of this disclosure, the UE communication manager 415 or its sub-components may be separate and distinct components. In some examples, according to various aspects of this disclosure, the UE communication manager 415 or its sub-components may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, transceivers, network servers, other computing devices, one or more other components described in this disclosure, or combinations thereof).

[0137] Transmitter 420 can transmit signals generated by other components of device 405. In some examples, transmitter 420 may coexist with receiver 410 in a transceiver assembly. For example, transmitter 420 may be a reference... Figure 7 Examples of various aspects of the transceiver 720 described. The transmitter 420 may utilize a single antenna or an array of antennas.

[0138] Figure 5 A block diagram 500 of a device 505 supporting CSI scheduling requests according to various aspects of this disclosure is shown. Device 505 may be an example of a device 405 or a UE 115 as described herein. Device 505 may include a receiver 510, a UE communication manager 515, and a transmitter 535. Device 505 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0139] Receiver 510 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to CSI scheduling). This information can be transmitted to other components of device 505. Receiver 510 can be a reference... Figure 7 Examples of various aspects of the transceiver 720 described. The receiver 510 may utilize a single antenna or an array of antennas.

[0140] UE communication manager 515 may be an example of aspects of UE communication manager 415 as described herein. UE communication manager 515 may include reporting component 525 and triggering component 530. UE communication manager 515 may be an example of aspects of UE communication manager 710 as described herein.

[0141] Reporting component 525 can transmit a CSI scheduling request to the base station and, in response to receiving a CSI report trigger, transmit a CSI report via the physical layer uplink channel. Triggering component 530 can receive a CSI report trigger based on the CSI scheduling request from the base station.

[0142] Transmitter 535 can transmit signals generated by other components of device 505. In some examples, transmitter 535 may coexist with receiver 510 in a transceiver assembly. For example, transmitter 535 may be a reference... Figure 7 Examples of various aspects of the transceiver 720 described. The transmitter 535 may utilize a single antenna or an array of antennas.

[0143] Figure 6A block diagram 600 of a UE communication manager 605 supporting CSI scheduling requests according to various aspects of this disclosure is shown. The UE communication manager 605 may be an example of aspects of the UE communication manager 415, UE communication manager 515, or UE communication manager 710 described herein. The UE communication manager 605 may include a channel component 610, a reporting component 615, a triggering component 620, and a reference signaling component 625. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0144] Reporting component 615 can transmit a CSI scheduling request to the base station. In some examples, reporting component 615 can transmit a CSI report via a physical layer uplink channel (e.g., PUSCH) in response to receiving a CSI report trigger. In some examples, reporting component 615 can include a first indication in the CSI scheduling request regarding resources that the base station wants to activate or grant permission for CSI report transmission from the UE to the base station. In some examples, reporting component 615 can transmit the CSI scheduling request on one or more dedicated resources or via a physical layer uplink channel carrying HARQ information, or a combination thereof.

[0145] In some examples, channel component 610 can identify changes in CSI related to communication with the base station at the UE, where CSI scheduling requests are transmitted based on this identification.

[0146] In some examples, the reporting component 615 can autonomously generate CSI scheduling requests. In some cases, one or more dedicated resources differ from the scheduling request resources associated with scheduling requests for uplink transmissions other than CSI report transmissions. In some cases, the CSI scheduling request is a bit indication. In some cases, the CSI report includes aperiodic CSI reports. In some cases, the CSI report includes semi-persistent CSI reports.

[0147] Triggering component 620 can receive a CSI report trigger based on a CSI scheduling request from the base station. In some examples, triggering component 620 can receive a second indication that resources used for CSI report transmission have been activated or granted. In some examples, triggering component 620 can detect a CSI scheduling request trigger. In some examples, triggering component 620 can generate a CSI scheduling request based on the CSI scheduling request trigger.

[0148] In some examples, triggering component 620 may identify channel interference measurements associated with a prior CSI report preceding the CSI report. In some examples, triggering component 620 may compare the channel interference measurements associated with a prior CSI report with one or more other channel interference measurements associated with other previous CSI reports. In some examples, triggering component 620 may receive one or more packets based on the MCS. In some examples, triggering component 620 may determine an MCS satisfaction threshold based on the log-likelihood ratio associated with decoding one or more packets, wherein generating a CSI scheduling request is based on determining that the MCS satisfies this threshold.

[0149] In some examples, triggering component 620 may determine the uplink power level based on a maximum permissible exposure limit, wherein generating a CSI scheduling request is based on determining that uplink power level. In some examples, triggering component 620 may receive one or more reserved signals in an unlicensed radio spectrum band, the one or more reserved signals including channel interference information, wherein generating a CSI scheduling request is based on receiving the one or more reserved signals. In some examples, triggering component 620 may determine power clearance information. In some examples, triggering component 620 may determine a power clearance satisfaction threshold associated with uplink communication based on the power clearance information, wherein generating a CSI scheduling request is based on the power clearance associated with uplink communication satisfying the threshold. In some cases, CSI reporting triggering includes DCI signaling or MAC-CE signaling.

[0150] Triggering component 620 can receive signaling from the base station including a CSI scheduling request configuration, wherein the transmission of the CSI scheduling request is based on the CSI scheduling request configuration. Triggering component 620 can identify one or more resources for the CSI scheduling request based on the CSI scheduling request configuration, wherein the one or more resources are pre-configured. In some examples, triggering component 620 can transmit the CSI scheduling request on one or more pre-configured resources. Triggering component 620 can determine CSI scheduling request triggering based on the CSI scheduling request configuration, which includes a threshold for CSI or CSI-related parameters, or both. Triggering component 620 can generate a CSI scheduling request based on the CSI scheduling request triggering. The CSI scheduling request configuration may correspond to one or more directional beams transmitted by the base station.

[0151] Reference signaling component 625 can transmit CSI scheduling requests via resources associated with one or more SRSs. In some examples, reference signaling component 625 can partition the resources associated with the one or more SRSs, wherein the partition includes an indication of the presence of a CSI scheduling request. In some examples, reference signaling component 625 can partition the one or more SRSs, wherein the partition of the one or more SRSs is an indication that no CSI scheduling request exists.

[0152] Figure 7 A diagram of a system 700 including device 705 supporting CSI scheduling requests according to various aspects of this disclosure is shown. Device 705 may be an example of device 405, device 505, or UE 115 as described herein, or a component including device 405, device 505, or UE 115. Device 705 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a UE communication manager 710, an I / O controller 715, a transceiver 720, an antenna 725, a memory 730, and a processor 740. These components may be in electronic communication via one or more buses (e.g., bus 745).

[0153] The UE communication manager 710 can transmit a CSI scheduling request to the base station, receive a CSI report trigger based on the CSI scheduling request from the base station, and transmit a CSI report through the physical layer uplink channel in response to receiving the CSI report trigger.

[0154] Device 705 may be implemented as described herein to achieve one or more potential advantages. One implementation may allow device 705 to interact more efficiently with base station 105 (such as...). Figure 2 (As shown in the diagram) Communication can save power and extend battery life. For example, device 705 can extend the coverage of CSI reporting. Additionally, device 705 can experience reduced complexity and better throughput through CSI reporting. Another implementation can facilitate higher reliability and lower latency communication at device 705 due to the flexibility of CSI reporting by supporting CSI scheduling requests, which can be messages from device 705 to the base station (e.g., gNB) to activate and grant resources for non-periodic or semi-persistent CSI reporting to device 705.

[0155] The I / O controller 715 manages the input and output signals of device 705. The I / O controller 715 can also manage peripheral devices not integrated into device 705. In some cases, the I / O controller 715 may represent a physical connection or port to an external peripheral device. In some cases, the I / O controller 715 may utilize an operating system, such as... Or another known operating system. In other cases, the I / O controller 715 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 715 may be implemented as part of a processor. In some cases, a user may interact with the device 705 via the I / O controller 715 or via hardware components controlled by the I / O controller 715.

[0156] Transceiver 720 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 720 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 720 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna. In some examples, device 705 may include a single antenna 725. However, in some other examples, device 705 may have more than one antenna 725, which may be able to transmit or receive multiple wireless transmissions concurrently.

[0157] Memory 730 may include random access memory (RAM) and read-only memory (ROM). Memory 730 may store computer-readable, computer-executable code 735, including instructions that, when executed, cause the processor to perform the various functions described herein. In some cases, memory 730 may particularly include a basic input / output system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0158] Code 735 may include instructions for implementing various aspects of this disclosure, including instructions for supporting wireless communication. Code 735 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 735 may not be directly executed by processor 740, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0159] Processor 740 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 740 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 740. Processor 740 may be configured to execute computer-readable instructions stored in memory (e.g., memory 730) to cause device 705 to perform various functions (e.g., functions or tasks supporting CSI scheduling).

[0160] Figure 8 A block diagram 800 of a device 805 supporting CSI scheduling requests according to various aspects of this disclosure is shown. Device 805 may be an example of various aspects of base station 105 as described herein. Device 805 may include a receiver 810, a base station communication manager 815, and a transmitter 820. Device 805 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0161] Receiver 810 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to CSI scheduling). This information can be transmitted to other components of device 805. Receiver 810 can be a reference... Figure 11 Examples of various aspects of the transceiver 1120 described. The receiver 810 may utilize a single antenna or an array of antennas.

[0162] The base station communication manager 815 can receive a CSI scheduling request from the UE, receive a CSI report via the physical layer uplink channel in response to the CSI report trigger, and transmit a CSI report trigger based on the CSI scheduling request. The base station communication manager 815 may be an example of various aspects of the base station communication manager 1110 described herein.

[0163] The base station communication manager 815 or its sub-components may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functionality of the base station communication manager 815 or its sub-components may be performed by a general-purpose processor, DSP, application-specific integrated circuit (ASIC), FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described in this disclosure.

[0164] The base station communication manager 815 or its sub-components may be physically located at various locations, including being distributed such that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of this disclosure, the base station communication manager 815 or its sub-components may be separate and distinct components. In some examples, according to various aspects of this disclosure, the base station communication manager 815 or its sub-components may be combined with one or more other hardware components (including, but not limited to, input / output (I / O) components, transceivers, network servers, other computing devices, one or more other components described in this disclosure, or combinations thereof).

[0165] Transmitter 820 can transmit signals generated by other components of device 805. In some examples, transmitter 820 may coexist with receiver 810 in a transceiver assembly. For example, transmitter 820 may be a reference... Figure 11 Examples of various aspects of the transceiver 1120 described. The transmitter 820 may utilize a single antenna or an array of antennas.

[0166] Figure 9 A block diagram 900 of a device 905 supporting CSI scheduling requests according to various aspects of this disclosure is shown. Device 905 may be an example of a device 805 as described herein or a aspect of base station 105. Device 905 may include a receiver 910, a base station communication manager 915, and a transmitter 930. Device 905 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0167] Receiver 910 can receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to CSI scheduling). This information can be transmitted to other components of device 905. Receiver 910 can be a reference... Figure 11 Examples of various aspects of the transceiver 1120 described herein. The receiver 910 may utilize a single antenna or an array of antennas.

[0168] Base station communication manager 915 may be an example of aspects of base station communication manager 815 as described herein. Base station communication manager 915 may include reporting component 920 and triggering component 925. Base station communication manager 915 may be an example of aspects of base station communication manager 1110 as described herein.

[0169] The reporting component 920 can receive a CSI scheduling request from the UE and receive a CSI report via the physical layer uplink channel in response to a CSI report trigger. The triggering component 925 can transmit a CSI report trigger based on the CSI scheduling request.

[0170] Transmitter 930 can transmit signals generated by other components of device 905. In some examples, transmitter 930 may coexist with receiver 910 in a transceiver assembly. For example, transmitter 930 may be a reference... Figure 11 Examples of various aspects of the transceiver 1120 described. The transmitter 930 may utilize a single antenna or an array of antennas.

[0171] Figure 10A block diagram 1000 of a base station communication manager 1005 supporting CSI scheduling requests according to various aspects of this disclosure is shown. The base station communication manager 1005 may be an example of various aspects of the base station communication manager 815, base station communication manager 915, or base station communication manager 1110 described herein. The base station communication manager 1005 may include a reporting component 1010, a triggering component 1015, a resource component 1020, and a reference signaling component 1025. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0172] Reporting component 1010 can receive CSI scheduling requests from the UE. In some examples, reporting component 1010 can receive CSI reports via a physical layer uplink channel (e.g., PUSCH) in response to a CSI report trigger. In some examples, reporting component 1010 can identify a first indication in the CSI scheduling request regarding resources that the base station should activate or grant for CSI report transmission from the UE to the base station. In some cases, the CSI scheduling request is a bit indication. In some cases, the CSI report includes aperiodic CSI reports. In some cases, the CSI report includes semi-persistent CSI reports. Reporting component 1010 can transmit signaling to the UE including a CSI scheduling request configuration, wherein the CSI scheduling request configuration corresponds to one or more directional beams associated with the UE.

[0173] Triggering component 1015 can transmit a CSI report trigger based on the CSI scheduling request. In some cases, the CSI report trigger includes DCI signaling. In some cases, the CSI report trigger includes MAC-CE signaling. Resource component 1020 can activate or grant resources for CSI report transmission. In some examples, resource component 1020 can transmit a second indication that resources for CSI report transmission have been activated or granted. In some examples, resource component 1020 can receive the CSI scheduling request on one or more dedicated resources or via a physical layer uplink channel carrying HARQ information or a combination thereof. In some cases, the CSI scheduling request is transmitted in association with one or more dedicated resources, which are different from scheduling request resources associated with scheduling requests for uplink transmissions other than CSI report transmissions. Reference signaling component 1025 can receive the CSI scheduling request via one or more SRSs. In some cases, the division of the one or more SRSs is an indication of the presence of a CSI scheduling request. In some cases, the division of the one or more SRSs is an indication of the absence of a CSI scheduling request.

[0174] Figure 11A diagram of a system 1100 including device 1105 supporting CSI scheduling requests according to various aspects of this disclosure is shown. Device 1105 may be an example of device 805, device 905, or base station 105 as described herein, or a component including the aforementioned devices. Device 1105 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including base station communication manager 1110, network communication manager 1115, transceiver 1120, antenna 1125, memory 1130, processor 1140, and inter-site communication manager 1145. These components may be in electronic communication via one or more buses (e.g., bus 1150).

[0175] The base station communication manager 1110 can receive CSI scheduling requests from the UE, receive CSI reports via a physical layer uplink channel (e.g., PUSCH) in response to CSI report triggering, and transmit CSI report triggering based on the CSI scheduling request. The network communication manager 1115 can manage communication with the core network (e.g., via one or more wired backhaul links). For example, the network communication manager 1115 can manage the delivery of data communications by client devices (such as one or more UEs 115).

[0176] Transceiver 1120 can communicate bidirectionally via one or more antennas, wired or wireless links, as described above. For example, transceiver 1120 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. Transceiver 1120 may also include a modem to modulate packets and provide the modulated packets to the antenna for transmission, and to demodulate packets received from the antenna. In some examples, device 1105 may include a single antenna 1125. However, in some examples, device 1105 may have more than one antenna 1125, which may be able to transmit or receive multiple wireless transmissions concurrently.

[0177] Memory 1130 may include RAM, ROM, or a combination thereof. Memory 1130 may store computer-readable code 1135 including instructions that, when executed by a processor (e.g., processor 1140), cause the device to perform the various functions described herein. In some cases, memory 1130 may, in particular, include a BIOS that controls basic hardware or software operation, such as interaction with peripheral components or devices. Code 1135 may include instructions for implementing aspects of this disclosure, including instructions for supporting wireless communication. Code 1135 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 1135 may not be directly executable by processor 1140, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein.

[0178] Processor 1140 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some examples, processor 1140 may be configured to use a memory controller to operate a memory array. In some examples, the memory controller may be integrated into processor 1140. Processor 1140 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1130) to cause device 1105 to perform various functions (e.g., functions or tasks supporting CSI scheduling).

[0179] Inter-site communication manager 1145 can manage communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with UE 115. For example, inter-site communication manager 1145 can coordinate the scheduling of transmissions to UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, inter-site communication manager 1145 may provide an X2 interface within LTE / LTE-A wireless communication network technology to facilitate communication between base stations 105.

[0180] Figure 12 A flowchart illustrating a method 1200 for supporting CSI scheduling requests according to various aspects of this disclosure is shown. Operation of method 1200 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1200 may be implemented by, as referred to... Figures 4 to 7 The UE communication manager described herein performs this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the following functions. Alternatively or alternatively, the UE may use dedicated hardware to perform aspects of the following functions.

[0181] At 1205, the UE can transmit a CSI scheduling request to the base station. The operation at 1210 can be performed according to the methods described herein. In some examples, aspects of the operation at 1210 can be derived from, as referenced... Figures 4 to 7 The described reporting component is used to perform this.

[0182] At 1210, the UE can receive a CSI report trigger based on the CSI scheduling request from the base station. The operation at 1215 can be performed according to the method described herein. In some examples, aspects of the operation at 1215 can be determined by referring to... Figures 4 to 7 The described triggering component is used to perform this action. In 1215, the UE can transmit a CSI report via the physical layer uplink channel in response to receiving a CSI report trigger. The operation of 1220 can be performed according to the method described herein. In some examples, aspects of the operation of 1220 can be performed as described in reference... Figures 4 to 7 The described reporting component is used to perform this.

[0183] Figure 13 A flowchart illustrating a method 1300 for supporting CSI scheduling requests according to various aspects of this disclosure is shown. Operation of method 1300 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1300 may be implemented by, as referred to... Figures 4 to 7 The UE communication manager described herein performs this function. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the following functions. Alternatively or alternatively, the UE may use dedicated hardware to perform aspects of the following functions.

[0184] At 1305, the UE may transmit a CSI scheduling request on one or more dedicated resources or via a physical layer uplink channel carrying HARQ information, or a combination thereof. Operation at 1310 may be performed according to the methods described herein. In some examples, aspects of operation at 1310 may be determined by reference to... Figures 4 to 7 The described reporting component is used to perform this.

[0185] At 1310, the UE can receive a CSI report trigger based on the CSI scheduling request from the base station. The operation at 1315 can be performed according to the method described herein. In some examples, aspects of the operation at 1315 can be determined by referring to... Figures 4 to 7 The described triggering component is used to execute.

[0186] At 1315, the UE may transmit a CSI report via a physical layer uplink channel (e.g., PUSCH or PUCCH) in response to receiving a CSI report. Operation at 1320 may be performed according to the methods described herein. In some examples, aspects of operation at 1320 may be determined by reference to... Figures 4 to 7 The described reporting component is used to perform this.

[0187] Figure 14 A flowchart illustrating a method 1400 for supporting CSI scheduling requests according to various aspects of this disclosure is shown. Operation of method 1400 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1400 may be implemented by, as referred to... Figures 4 to 7 The UE communication manager is described in this document. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the following functions.

[0188] At 1405, the UE can transmit a CSI scheduling request via a resource associated with one or more SRSs. The operation at 1410 can be performed according to the methods described herein. In some examples, aspects of the operation at 1410 can be described as follows: Figures 4 to 7 The reference signal component described is used for execution.

[0189] At 1410, the UE can receive a CSI report trigger based on the CSI scheduling request from the base station. The operation at 1415 can be performed according to the method described herein. In some examples, aspects of the operation at 1415 can be determined by referring to... Figures 4 to 7 The described triggering component is used to execute.

[0190] At 1415, the UE can transmit a CSI report via the physical layer uplink channel in response to receiving a CSI report. The operation at 1420 can be performed according to the methods described herein. In some examples, aspects of the operation at 1420 can be derived as described in reference... Figures 4 to 7 The described reporting component is used to perform this.

[0191] Figure 15 A flowchart illustrating a method 1500 for supporting CSI scheduling requests according to various aspects of this disclosure is shown. Operation of method 1500 may be implemented by a UE 115 or its components as described herein. For example, operation of method 1500 may be implemented by, as referred to... Figures 4 to 7 The UE communication manager is described in this document. In some examples, the UE can execute a set of instructions to control the functional elements of the UE to perform the following functions.

[0192] In step 1505, the UE can detect a CSI scheduling request trigger. The operation of step 1505 can be performed according to the methods described herein. In some examples, aspects of the operation of step 1505 can be described as follows: Figures 4 to 7 The described triggering component is used to execute.

[0193] In step 1510, the UE can generate a CSI scheduling request based on this CSI scheduling request trigger. The operation of step 1510 can be performed according to the methods described herein. In some examples, aspects of the operation of step 1510 can be derived from, as referenced... Figures 4 to 7 The described triggering component is used to execute.

[0194] At step 1515, the UE can transmit a CSI scheduling request to the base station. The operation of step 1515 can be performed according to the methods described herein. In some examples, aspects of the operation of step 1515 can be described as follows: Figures 4 to 7 The described reporting component is used to perform this.

[0195] At 1520, the UE can receive a CSI report trigger based on the CSI scheduling request from the base station. The operation of 1520 can be performed according to the methods described herein. In some examples, aspects of the operation of 1520 can be determined by referring to... Figures 4 to 7 The described triggering component is used to execute.

[0196] At 1525, the UE can transmit a CSI report via the physical layer uplink channel in response to receiving a CSI report. The operation of 1525 can be performed according to the methods described herein. In some examples, aspects of the operation of 1525 can be described as follows: Figures 4 to 7 The described reporting component is used to perform this.

[0197] Figure 16 A flowchart illustrating a method 1600 for supporting CSI scheduling requests according to various aspects of this disclosure is shown. Operation of method 1600 may be implemented by a base station 105 or its components as described herein. For example, operation of method 1600 may be implemented by, as referenced... Figures 8 to 11 The described base station communication manager is used to perform this function. In some examples, the base station can execute a set of instructions to control the functional elements of the base station to perform the following functions. Alternatively or alternatively, the base station may use dedicated hardware to perform aspects of the following functions.

[0198] In step 1605, the base station can receive CSI scheduling requests from the UE. The operation of step 1605 can be performed according to the methods described herein. In some examples, aspects of the operation of step 1605 can be described as follows: Figures 8 to 11 The described reporting component is used to perform this.

[0199] In step 1610, the base station can trigger the transmission of a CSI report based on this CSI scheduling request. The operation of step 1610 can be performed according to the methods described herein. In some examples, aspects of the operation of step 1610 can be derived from, as referenced... Figures 8 to 11 The described triggering component is used to execute.

[0200] In 1615, the base station can receive a CSI report via the physical layer uplink channel in response to a CSI report trigger. The operation of 1615 can be performed according to the methods described herein. In some examples, aspects of the operation of 1615 can be described as follows: Figures 8 to 11 The described reporting component is used to perform this.

[0201] The following provides an overview of the various aspects of this disclosure:

[0202] Aspect 1: A method for wireless communication at a UE, comprising: transmitting a CSI scheduling request to a base station; receiving a CSI report trigger from the base station based at least in part on the CSI scheduling request; and transmitting a CSI report via a physical layer uplink channel in response to receiving the CSI report trigger.

[0203] Aspect 2: The method of aspect 1 further includes: identifying changes in CSI related to communication with the base station at the UE, wherein a CSI scheduling request is transmitted based on the identification.

[0204] Aspect 3: The method of any one of Aspects 1 to 2 further includes: including in the CSI scheduling request a first indication of the resources that the base station wants to activate or grant for CSI report transmission from the UE to the base station.

[0205] Aspect 4: The method of aspect 3, wherein receiving a CSI report trigger includes: receiving a second indication that the resources used for CSI report transmission have been activated or authorized.

[0206] Aspect 5: The method of any one of Aspects 1 to 4, wherein transmitting the CSI scheduling request includes: transmitting the CSI scheduling request on one or more dedicated resources or via a physical layer uplink channel carrying HARQ information or a combination thereof.

[0207] Aspect 6: The method of aspect 5, wherein the one or more dedicated resources are different from the scheduling request resources associated with scheduling requests for uplink transmissions other than CSI report transmissions.

[0208] Aspect 7: The method of any of Aspects 1 to 6, wherein the CSI scheduling request is a bit indication.

[0209] Aspect 8: The method of any of Aspects 1 to 7, wherein the CSI report trigger includes DCI signaling or MAC-CE signaling.

[0210] Aspect 9: The method of any one of Aspects 1 to 8, wherein transmitting a CSI scheduling request includes transmitting the CSI scheduling request via a resource associated with one or more probe reference signals.

[0211] Aspect 10: The method of aspect 9 further includes: partitioning resources associated with the one or more probe reference signals, wherein the partitioning includes an indication of the presence of a CSI scheduling request.

[0212] Aspect 11: The method of any one of Aspects 1 to 10 further includes: autonomously generating CSI scheduling requests.

[0213] Aspect 12: The method of any one of Aspects 1 to 10 further includes: detecting a CSI scheduling request trigger; and generating a CSI scheduling request based at least in part on the CSI scheduling request trigger.

[0214] Aspect 13: The method of aspect 12, wherein detecting a CSI scheduling request trigger includes: identifying a channel interference measurement associated with a prior CSI report preceding the CSI report; and comparing the channel interference measurement associated with the prior CSI report with one or more channel interference measurements associated with other previous CSI reports.

[0215] Aspect 14: The method of any one of Aspects 12 to 13, wherein detecting a CSI scheduling request trigger comprises: receiving one or more packets according to a modulation and coding scheme; and determining, at least in part, that the modulation and coding scheme satisfies a threshold based on a log-likelihood ratio associated with decoding the one or more packets, wherein generating a CSI scheduling request is at least in part based on determining that the modulation and coding scheme satisfies the threshold.

[0216] Aspect 15: The method of any one of Aspects 12 to 14, wherein detecting a CSI scheduling request trigger comprises: determining an uplink power level at least in part based on a maximum permissible exposure limit, wherein generating a CSI scheduling request is at least in part based on determining the uplink power level.

[0217] Aspect 16: The method of any one of Aspects 12 to 15, wherein detecting a CSI scheduling request trigger comprises: receiving one or more reserved signals in an unlicensed radio spectrum band, the one or more reserved signals including channel interference information, wherein generating a CSI scheduling request is based at least in part on receiving the one or more reserved signals.

[0218] Aspect 17: The method of any one of Aspects 12 to 16, wherein detecting a CSI scheduling request trigger comprises: determining power clearance information; and determining, at least in part, a power clearance satisfaction threshold associated with uplink communication based on the power clearance information, wherein generating a CSI scheduling request is based at least in part on the power clearance associated with uplink communication satisfying the threshold.

[0219] Aspect 18: The method of any one of Aspects 1 to 17, wherein the CSI report includes non-periodic CSI reports.

[0220] Aspect 19: The method of any one of Aspects 1 to 18, wherein the CSI report includes a semi-persistent CSI report.

[0221] Aspect 20: The method of any one of Aspects 1 to 19 further includes: receiving from a base station signaling including a CSI scheduling request configuration, wherein the transmission of the CSI scheduling request is at least partially based on the CSI scheduling request configuration.

[0222] Aspect 21: The method of aspect 20 further includes: identifying one or more resources for the CSI scheduling request based at least in part on the CSI scheduling request configuration, the one or more resources being pre-configured, wherein transmitting the CSI scheduling request includes: transmitting the CSI scheduling request on the one or more pre-configured resources.

[0223] Aspect 22: The method of any one of Aspects 20 and 21 further includes: determining a CSI scheduling request trigger based at least in part on a CSI scheduling request configuration, the CSI scheduling request configuration including a threshold for CSI or a CSI-related parameter or both; and generating a CSI scheduling request based at least in part on the CSI scheduling request trigger.

[0224] Aspect 23: The method of any one of Aspects 20 to 22, wherein the CSI scheduling request configuration corresponds to one or more directional beams transmitted by the base station.

[0225] Aspect 24: A method for wireless communication at a base station, comprising: receiving a CSI scheduling request from a UE; transmitting a CSI report trigger based at least in part on the CSI scheduling request; and receiving a CSI report via a physical layer uplink channel in response to the CSI report trigger.

[0226] Aspect 25: The method of aspect 24 further includes: identifying in the CSI scheduling request a first indication regarding resources to be activated or permitted by the base station for CSI report transmission from the UE to the base station; and activating or permitting the resources for CSI report transmission.

[0227] Aspect 26: The method of aspect 25, wherein triggering the transmission of a CSI report includes: transmitting a second indication that the resources used for the transmission of the CSI report have been activated or authorized.

[0228] Aspect 27: The method of any one of Aspects 24 to 26, wherein receiving a CSI scheduling request comprises: receiving a CSI scheduling request on one or more dedicated resources or via a physical layer uplink channel carrying HARQ information or a combination thereof.

[0229] Aspect 28: The method of aspect 27, wherein the CSI scheduling request is transmitted in association with one or more dedicated resources, which are different from the scheduling request resources associated with scheduling requests for uplink transmissions other than CSI report transmissions.

[0230] Aspect 29: The method of any of Aspects 24 to 28, wherein the CSI scheduling request is a bit indication.

[0231] Aspect 30: The method of any one of Aspects 24 to 29, wherein the CSI report triggers downlink control information signaling.

[0232] Aspect 31: The method of any one of Aspects 24 to 30, wherein the CSI report triggers signaling including Media Access Control - Control Element.

[0233] Aspect 32: The method of any one of Aspects 24 to 31, wherein receiving a CSI scheduling request includes: receiving a CSI scheduling request via one or more probe reference signals.

[0234] Aspect 33: The method of aspect 32, wherein the division of the one or more probe reference signals is an indication of the presence of a CSI scheduling request.

[0235] Aspect 34: The method of any one of Aspects 32 and 33, wherein the partitioning of the one or more probe reference signals is an indication that there is no CSI scheduling request.

[0236] Aspect 35: The method of any one of Aspects 24 to 34, wherein the CSI report includes non-periodic CSI reports.

[0237] Aspect 36: The method of any one of Aspects 24 to 35, wherein the CSI report includes a semi-persistent CSI report.

[0238] Aspect 37: The method of any one of Aspects 24 to 36 further includes: transmitting to the UE signaling including a CSI scheduling request configuration, wherein receiving the CSI scheduling request is at least partially based on the CSI scheduling request configuration.

[0239] Aspect 38: The method of aspect 37, wherein the CSI scheduling request configuration corresponds to one or more directional beams associated with the UE.

[0240] Aspect 39: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of Aspects 1 to 23.

[0241] Aspect 40: An apparatus for wireless communication at a UE, comprising at least one means for performing the method of any one of aspects 1 to 23.

[0242] Aspect 41: A non-transient computer-readable medium storing code for wireless communication at a UE, the code including instructions executable by a processor to perform any one of methods 1 to 23.

[0243] Aspect 42: An apparatus for wireless communication at a base station, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of any one of aspects 24 to 38.

[0244] Aspect 43: An apparatus for wireless communication at a base station, comprising at least one means for performing the method of any one of aspects 24 to 38.

[0245] Aspect 44: A non-transient computer-readable medium storing code for wireless communication at a base station, the code including instructions executable by a processor to perform any of methods 24 to 38.

[0246] It should be noted that the methods described in this paper describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are also possible. Furthermore, aspects from two or more methods can be combined.

[0247] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein can also be applied to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques can be applied to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0248] The information and signals described herein can be represented using any of a wide variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout this description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0249] The various illustrative boxes and components described herein can be implemented or executed using a general-purpose processor, DSP, ASIC, CPU, 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. The general-purpose processor may be a microprocessor, but in alternatives, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a digital signal processor (DSP) and a microprocessor, multiple microprocessors, one or more microprocessors working in conjunction with a DSP core, or any other such configuration).

[0250] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations fall within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Features implementing the functions can also be physically located in various locations, including being distributed such that different parts of the function are implemented at different physical locations.

[0251] Computer-readable media includes both non-transient computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transient storage media can be any available medium accessible to a general-purpose or special-purpose computer. By way of example and not limitation, non-transient computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other non-transient medium that can be used to carry or store desired program code in the form of instructions or data structures and is accessible to a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Similarly, any connection is also legitimately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then that 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 media. As used in this article, disk and disc include CDs, laser discs, optical discs, DVDs, floppy disks, and Blu-ray discs, where disks often magnetically reproduce data while discs optically reproduce data using lasers. Combinations of these media are also included within the scope of computer-readable media.

[0252] As used herein (including in the claims), the word "or" in an enumeration of items (e.g., an enumeration of items accompanied by phrases such as "at least one of" or "one or more of") indicates an inclusive enumeration, such that an enumeration of at least one of, for example, 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). Similarly, as used herein, the phrase "based on" should not be construed as referencing a closed set of conditions. For example, an example step described as being based on condition "A" may be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0253] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, components of the same type may be distinguished by a dash following the reference numeral and a second reference numeral used to differentiate between similar components. If only the first reference numeral is used in the description, the description may apply to any of the similar components having the same first reference numeral, regardless of the second reference numeral or other subsequent reference numerals.

[0254] This document, illustrated with reference to the accompanying drawings, describes exemplary configurations but does not represent all examples that can be implemented or fall within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration" and does not imply "superior" or "outperforming" other examples. This detailed description includes specific details to provide an understanding of various concepts. However, these techniques can be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0255] The description provided herein is intended to enable those skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the universal principles defined herein can be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for performing wireless communication at a user equipment (UE), comprising: The UE receives signaling from the network device including a channel state information scheduling request configuration, the channel state information scheduling request configuration including a threshold for the channel state information or a parameter related to the channel state information, or both, the channel state information scheduling request configuration configuring the UE to have one or more channel state information scheduling request triggers that trigger the UE to transmit a channel state information scheduling request, the channel state information scheduling request requesting the network device to provide permission for a channel state information report including channel state information associated with the communication link between the UE and the network device; The UE transmits the channel state information scheduling request to the network device at least in part based on the UE detecting the presence of at least one channel state information scheduling request triggered as indicated in the channel state information scheduling request configuration. The channel state information report is triggered by receiving a channel state information report from the network device, wherein the channel state information report trigger is the granting or at least in part based on the channel state information scheduling request to activate the granting of scheduling the channel state information report; as well as The channel state information report is transmitted via the physical layer uplink channel in response to the channel state information report being triggered.

2. The method of claim 1, further comprising: The UE identifies changes in the channel state information related to communication with the network device, wherein the channel state information scheduling request is transmitted based on the identification.

3. The method as described in claim 1, wherein, The channel state information scheduling request includes: The channel state information scheduling request is transmitted on one or more dedicated resources or via the physical layer uplink channel or a combination thereof carrying mixed automatic repeat request information.

4. The method of claim 3, wherein, The one or more dedicated resources are different from the scheduling request resources associated with scheduling requests for uplink transmissions other than channel state information report transmissions.

5. The method of claim 1, wherein, The channel state information scheduling request is a bit indication.

6. The method of claim 1, wherein, The permission granted includes downlink control information signaling or media access control-control element signaling.

7. The method of claim 1, wherein, The channel state information scheduling request includes: The channel state information scheduling request is transmitted via resources associated with one or more probe reference signals.

8. The method of claim 7, further comprising: The resources associated with the one or more probe reference signals are partitioned, wherein the partitioning includes an indication of the presence of the channel state information scheduling request.

9. The method of claim 1, further comprising: The channel state information scheduling request is generated autonomously.

10. The method of claim 1, further comprising: The scheduling request for at least one channel state information is triggered. as well as The channel state information scheduling request is generated at least in part based on the triggering of the at least one channel state information scheduling request.

11. The method of claim 10, wherein, Detecting the triggering of at least one channel state information scheduling request includes: Identify channel interference measurements associated with prior channel state information reports preceding the aforementioned channel state information report; and The channel interference measurement associated with the prior channel state information report is compared with one or more other prior channel state information reports.

12. The method of claim 10, wherein, Detecting the triggering of at least one channel state information scheduling request includes: To receive one or more packets according to a modulation and coding scheme; and The modulation and coding scheme is determined to satisfy a threshold based at least in part on the log-likelihood ratio associated with decoding the one or more packets, wherein the generation of the channel state information scheduling request is based at least in part on the determination that the modulation and coding scheme satisfies the threshold.

13. The method of claim 10, wherein, Detecting the triggering of at least one channel state information scheduling request includes: The uplink power level is determined at least in part based on a maximum permissible illumination limit, wherein the generation of the channel state information scheduling request is at least in part based on the determination of the uplink power level.

14. The method of claim 10, wherein, Detecting the triggering of at least one channel state information scheduling request includes: One or more reserved signals are received in an unlicensed radio spectrum band, the one or more reserved signals including channel interference information, wherein the channel state information scheduling request is generated at least in part based on the receipt of the one or more reserved signals.

15. The method of claim 10, wherein, Detecting the triggering of at least one channel state information scheduling request includes: Determine power clearance information; and The power clearance satisfaction threshold associated with uplink communication is determined at least in part based on the power clearance information, wherein the channel state information scheduling request is generated at least in part based on the power clearance associated with the uplink communication satisfying the threshold.

16. The method of claim 1, wherein, The channel state information report includes aperiodic channel state information reports.

17. The method of claim 1, wherein, The channel state information report includes a semi-persistent channel state information report.

18. The method of claim 1, further comprising: The channel state information scheduling request is identified, at least in part, based on a configuration that identifies one or more resources for the channel state information scheduling request, the one or more resources being pre-configured, wherein transmitting the channel state information scheduling request includes: Transmit the channel state information scheduling request on one or more pre-configured resources.

19. The method of claim 1, further comprising: The triggering of the at least one channel state information scheduling request is determined at least in part based on the channel state information scheduling request configuration; as well as The channel state information scheduling request is generated at least in part based on the triggering of the at least one channel state information scheduling request.

20. The method of claim 1, wherein, The channel state information scheduling request configuration corresponds to one or more directional beams transmitted by the network device.

21. The method of claim 1, wherein, The triggering of one or more channel state information scheduling requests is related to one or more of the following: Changes in the channel state information relative to previously reported channel state information, the modulation and coding scheme (MCS) associated with received packets, and the power headroom associated with uplink transmissions performed by the UE.

22. A user equipment (UE) for wireless communication, comprising: processor; Memory coupled to the processor; as well as Instructions, which are stored in the memory and can be executed by the processor, to cause the UE to: The UE receives signaling from the network device including a channel state information scheduling request configuration, the channel state information scheduling request configuration including a threshold for the channel state information or a parameter related to the channel state information, or both, the channel state information scheduling request configuration configuring the UE to have one or more channel state information scheduling request triggers that trigger the UE to transmit a channel state information scheduling request, the channel state information scheduling request requesting the network device to provide permission for a channel state information report including channel state information associated with the communication link between the UE and the network device; The UE transmits the channel state information scheduling request to the network device at least in part based on the UE detecting the presence of at least one channel state information scheduling request triggered as indicated in the channel state information scheduling request configuration. The channel state information report is triggered by receiving a channel state information report from the network device, wherein the channel state information report trigger is the granting or at least in part based on the channel state information scheduling request to activate the granting of scheduling the channel state information report; as well as The channel state information report is transmitted via the physical layer uplink channel in response to the channel state information report being triggered.

23. The UE of claim 22, wherein the instructions are executable by the processor to cause the UE to: The UE identifies changes in the channel state information related to communication with the network device, wherein the channel state information scheduling request is transmitted based on the identification.

24. The UE of claim 22, wherein the instruction for transmitting the channel state information scheduling request is executable by the processor to cause the UE to: The channel state information scheduling request is transmitted on one or more dedicated resources or via the physical layer uplink channel or a combination thereof carrying mixed automatic repeat request information.

25. The UE of claim 22, wherein the instruction for transmitting the channel state information scheduling request is executable by the processor to cause the UE to: The channel state information scheduling request is transmitted via resources associated with one or more probe reference signals.

26. The UE of claim 22, wherein the instructions are executable by the processor to cause the UE to: Detecting the triggering of at least one channel state information scheduling request; and The channel state information scheduling request is generated at least in part based on the triggering of the at least one channel state information scheduling request.

27. A user equipment (UE) for wireless communication, comprising: A means for receiving signaling from a network device including a channel state information scheduling request configuration, the channel state information scheduling request configuration including a threshold for the channel state information or a parameter related to the channel state information, or both, the channel state information scheduling request configuration configuring the UE to have one or more channel state information scheduling request triggers that trigger the UE to transmit a channel state information scheduling request, the channel state information scheduling request requesting the network device to provide permission for a channel state information report including channel state information associated with a communication link between the UE and the network device; A means for transmitting the channel state information scheduling request to the network device based at least in part on the UE detecting the presence of at least one channel state information scheduling request trigger indicated in the channel state information scheduling request configuration; A means for receiving a channel state information report trigger from the network device, wherein the channel state information report trigger is the grant or at least in part based on the channel state information scheduling request that activates the grant to schedule the channel state information report; as well as A means for transmitting the channel state information report via a physical layer uplink channel in response to the channel state information report being triggered.

28. A non-transient computer-readable medium storing code for wireless communication at a user equipment (UE), the code including instructions executable by a processor of the UE for the following operations: The UE receives signaling from the network device including a channel state information scheduling request configuration, the channel state information scheduling request configuration including a threshold for the channel state information or a parameter related to the channel state information, or both, the channel state information scheduling request configuration configuring the UE to have one or more channel state information scheduling request triggers that trigger the UE to transmit a channel state information scheduling request, the channel state information scheduling request requesting the network device to provide permission for a channel state information report including channel state information associated with the communication link between the UE and the network device; The UE transmits the channel state information scheduling request to the network device at least in part based on the UE detecting the presence of at least one channel state information scheduling request triggered as indicated in the channel state information scheduling request configuration. The channel state information report is triggered by receiving a channel state information report from the network device, wherein the channel state information report trigger is the granting or at least in part based on the channel state information scheduling request to activate the granting of scheduling the channel state information report; as well as The channel state information report is transmitted via the physical layer uplink channel in response to the channel state information report being triggered.

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