Indicating uplink power control parameters

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may determine one or more uplink power control parameters for a sounding reference signal (SRS) transmission based at least in part on whether the one or more uplink power control parameters are associated with a transmission configuration indication (TCI) state associated with at least one of an uplink control channel or an uplink shared channel. The UE may transmit an SRS transmission based at least in part on the one or more uplink power control parameters. Numerous other aspects are described.

Description

[Technical field]

[0001] (CROSS REFERENCE TO RELATED APPLICATIONS) This patent application claims priority to U.S. Provisional Patent Application No. 63 / 266,423, entitled "INDICATING UPLINK POWER CONTROL PARAMETERS," filed on January 5, 2022, and U.S. Non-Provisional Patent Application No. 17 / 900,566, entitled "INDICATING UPLINK POWER CONTROL PARAMETERS," filed on August 31, 2022, which are expressly incorporated by reference herein.

[0002] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for indicating uplink power control parameters. [Background technology]

[0003] Wireless communication systems have been widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may utilize multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is a set of extensions to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP®).

[0004] A wireless network may include one or more base stations that support communication for a single user equipment (UE) or multiple UEs. A UE may communicate with a base station via downlink and uplink communications. "Downlink" (or "DL") refers to the communication link from a base station to a UE, and "uplink" (or "UL") refers to the communication link from the UE to a base station.

[0005] The above multiple access technologies have been adopted in various telecommunications standards to provide common protocols that allow different UEs to communicate on a city, national, regional, and / or global scale. New Radio (NR), sometimes referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, taking advantage of new spectrum, using orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) (CP-OFDM) on the downlink and CP-OFDM and / or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, as well as better integration with other open standards that support beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to grow, further improvements in LTE, NR, and other radio access technologies remain useful. Summary of the Invention

[0006] Certain aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include determining one or more uplink power control parameters for a sounding reference signal (SRS) transmission based at least in part on whether the one or more uplink power control parameters are associated with a transmission configuration indicator (TCI) state associated with at least one of an uplink control channel or an uplink shared channel. The method may include transmitting an SRS transmission based at least in part on the one or more uplink power control parameters.

[0007] Certain aspects described herein relate to a method of wireless communication implemented by a base station. The method may include transmitting an indication of one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel. The method may include receiving an SRS transmission based at least in part on the one or more uplink power control parameters.

[0008] Some aspects described herein relate to a UE for wireless communication. The user equipment may include a memory and one or more processors coupled to the memory. The memory may include instructions executable by the one or more processors to cause the UE to determine one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel. The memory may include instructions executable by the one or more processors to cause the UE to transmit an SRS transmission based at least in part on the one or more uplink power control parameters.

[0009] Certain aspects described herein relate to a base station for wireless communication. The base station may include a memory and one or more processors coupled to the memory. The memory may include instructions executable by the one or more processors to cause the base station to transmit an indication of one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel. The memory may include instructions executable by the one or more processors to cause the base station to receive an SRS transmission based at least in part on the one or more uplink power control parameters.

[0010] Certain aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to determine one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel. The set of instructions, when executed by the one or more processors of the UE, may cause the UE to transmit an SRS transmission based at least in part on the one or more uplink power control parameters.

[0011] Certain aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a base station. The set of instructions, when executed by one or more processors of the base station, may cause the base station to transmit an indication of one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel. The set of instructions, when executed by the one or more processors of the base station, may cause the base station to receive an SRS transmission based at least in part on the one or more uplink power control parameters.

[0012] Certain aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for determining one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel. The apparatus may include means for transmitting an SRS transmission based at least in part on the one or more uplink power control parameters.

[0013] Certain aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for transmitting an indication of one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel. The apparatus may include means for receiving an SRS transmission based at least in part on the one or more uplink power control parameters.

[0014] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network nodes, wireless communication devices, and / or processing systems, as substantially fully described herein with reference to and as illustrated in the drawings and this specification.

[0015] The foregoing has outlined rather broadly the features and technical advantages of embodiments according to the present disclosure in order that the following Detailed Description may be better understood. Additional features and advantages will be described hereinafter. The concepts and examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent structures do not depart from the scope of the appended claims. The nature of the concepts disclosed herein, both their organization and method of operation, together with associated advantages, will be better understood from the following description when considered in conjunction with the accompanying figures. Each of the figures is provided for the purpose of illustration and explanation, and not as a definition of the limits of the claims.

[0016] Although aspects are described in this disclosure by illustrating some examples, those skilled in the art will appreciate that such aspects can be implemented in many different configurations and scenarios. The techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and / or packaging configurations. For example, some aspects may be implemented via integrated chip embodiments or other non-modular component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, and / or artificial intelligence-enabled devices). Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and / or system-level components. Devices incorporating the described aspects and features may include additional components and features for the implementation and practice of the claimed and described aspects. For example, the transmission and reception of wireless signals may include one or more components for analog and digital applications (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and / or summers). It is contemplated that aspects described herein may be practiced in a wide variety of devices, components, systems, distributed configurations, and / or end-user devices of various sizes, shapes, and configurations.

[0017] So that the above-listed features of the present disclosure can be understood in detail, a more detailed description, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the attached drawings. It should be noted, however, that the attached drawings illustrate only certain exemplary embodiments of the present disclosure and therefore should not be considered as limiting the scope of the present disclosure, since the present description may admit of other equally effective embodiments. The same reference numbers in different drawings may identify the same or similar elements. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 illustrates an example of a wireless network in accordance with the present disclosure. [Diagram 2] FIG. 1 illustrates an example of a base station in communication with a user equipment (UE) in a wireless network in accordance with the present disclosure. [Diagram 3] FIG. 2 illustrates an example of a transmit (Tx) chain and a receive (Rx) chain of a UE in accordance with the present disclosure. [Figure 4] FIG. 2 illustrates an example of physical channels and reference signals in a wireless network in accordance with the present disclosure. [Diagram 5] FIG. 1 illustrates an example of a sounding reference signal (SRS) resource set according to the present disclosure. [Figure 6] FIG. 1 illustrates an example of using beams for communication between a base station and a UE in accordance with the present disclosure. [Figure 7] FIG. 1 illustrates an example associated with indicating uplink power control parameters in accordance with the present disclosure. [Figure 8] 5 illustrates an example process associated with indicating uplink power control parameters in accordance with the present disclosure. [Figure 9] 5 illustrates an example process associated with indicating uplink power control parameters in accordance with the present disclosure. [Figure 10] FIG. 1 is an illustration of an exemplary apparatus for wireless communication in accordance with the present disclosure. [Figure 11] FIG. 1 is an illustration of an exemplary apparatus for wireless communication in accordance with the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] Various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure may be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout the present disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Those skilled in the art should understand that the scope of the present disclosure is intended to encompass any aspect of the present disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of the present disclosure. For example, an apparatus can be implemented or a method can be practiced using any number of the aspects described herein. Moreover, the scope of the present disclosure is intended to encompass such an apparatus or method that is practiced using other structures, functions, or structures and functions in addition to or other than the various aspects of the present disclosure described herein. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of a claim.

[0020] Several aspects of a telecommunications system are now presented with reference to various devices and techniques, which are described in the detailed description that follows and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.

[0021] Although aspects may be described herein using terminology commonly associated with 5G or New Radio (NR) radio access technology (RAT), aspects of the disclosure may be applicable to other RATs, such as 3G RATs, 4G RATs, and / or post-5G (e.g., 6G) RATs.

[0022] FIG. 1 illustrates an example of a wireless network 100 in accordance with the present disclosure. The wireless network 100 may be or include elements of a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, among other examples. The wireless network 100 may include one or more base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other network entities. The base stations 110 are entities that communicate with the UEs 120. The base stations 110 (which may be referred to as BSs) may include, for example, NR base stations, LTE base stations, Node Bs, eNBs (e.g., in 4G), gNBs (e.g., in 5G), access points, and / or transmit / receive points (TRPs). Each base station 110 can provide communication coverage for a particular geographic area. In 3rd Generation Partnership Project (3GPP®), the term "cell" can refer to the coverage area of ​​a base station 110 and / or a base station subsystem serving that coverage area, depending on the context in which the term is used.

[0023] A base station 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a few kilometers in radius) and may allow unrestricted access by UEs 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 with an association with the femto cell (e.g., UEs 120 in a closed subscriber group (CSG)). A base station 110 for a macro cell may be referred to as a macro base station. A base station 110 for a pico cell may be referred to as a pico base station. A base station 110 for a femto cell may be referred to as a femto base station or a home base station. 1, BS 110a may be a macro base station for a macro cell 102a, BS 110b may be a pico base station for a pico cell 102b, and BS 110c may be a femto base station for a femto cell 102c. A base station may support one or multiple (e.g., three) cells.

[0024] In some aspects, the term "base station" (e.g., base station 110) or "network node" may refer to an aggregated base station, a non-aggregated base station, an integrated access and backhaul (IAB) node, a relay node, and / or one or more components thereof. For example, in some aspects, a "base station" or a "network node" may refer to a central unit (CU), a distributed unit (DU), a radio unit (RU), a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC), or a Non-Real Time (Non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to one device configured to perform one or more functions, such as the functions described herein with respect to base station 110. In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, multiple different devices (which may be located at the same geographic location or different geographic locations) may each be configured to perform at least a portion of the functions or to replicate the performance of at least a portion of the functions, and the term "base station" or "network node" may refer to any one or more of those different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations and / or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions and not another base station function. In this manner, a single device may include two or more base stations.

[0025] In some embodiments, the cells may not necessarily be fixed, and the geographic area of ​​the cells may move according to the location of the base stations 110 that are mobile (e.g., mobile base stations). In some embodiments, the base stations 110 may be interconnected to each other and / or to one or more other base stations 110 or network nodes (not shown) within the wireless network 100 through various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

[0026] The wireless network 100 may include one or more relay stations. A relay station is an entity capable of receiving a data transmission from an upstream station (e.g., a base station 110 or a UE 120) and transmitting the data transmission to a downstream station (e.g., a UE 120 or a base station 110). A relay station may be a UE 120 that can relay a transmission for another UE 120. In the embodiment shown in FIG. 1, a BS 110d (e.g., a relay base station) may communicate with a BS 110a (e.g., a macro base station) and a UE 120d to facilitate communication between the BS 110a (e.g., a macro base station) and the UE 120d. A base station 110 that relays communication may be referred to as a relay station, a relay base station, a repeater, etc.

[0027] The wireless network 100 may be a heterogeneous network including different types of base stations 110, such as macro base stations, pico base stations, femto base stations, relay base stations, etc. These different types of base stations 110 may have different transmit power levels, different coverage areas, and / or different susceptibility to interference within the wireless network 100. For example, a macro base station may have a high transmit power level (e.g., 5-40 Watts), while the pico, femto, and relay base stations may have a lower transmit power level (e.g., 0.1-2 Watts).

[0028] A network controller 130 may be coupled to or in communication with a set of base stations 110 and may provide coordination and control for these base stations 110. The network controller 130 may communicate with the base stations 110 via backhaul communication links. The base stations 110 may communicate with each other directly or indirectly via wireless or wired backhaul communication links.

[0029] The UEs 120 may be dispersed throughout the wireless network 100, and each UE 120 may be fixed or mobile. The UEs 120 may include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. The UEs 120 may be a mobile phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, and / or any other suitable device configured to communicate over a wireless medium.

[0030] Some UEs 120 may be considered as machine-type communication (MTC) UEs or evolved or enhanced machine-type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, and / or a location tag that may communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet-of-Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. The UE 120 may be included within a housing that houses components of the UE 120, such as a processor component and / or a memory component. In some embodiments, the processor component and the memory component may be coupled to each other. For example, a processor component (e.g., one or more processors) and a memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0031] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a particular RAT and may operate on one or more frequencies. The RAT may be referred to as a radio technology, an air interface, etc. The frequencies may be referred to as a carrier, a frequency channel, etc. To avoid interference between wireless networks of different RATs, each frequency may support a single RAT in a given geographic area. In some cases, NR networks or 5G RAT networks may be deployed.

[0032] In some embodiments, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other) using one or more sidelink channels. For example, UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, vehicle-to-everything (V2X) protocols (which may include, e.g., vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such embodiments, UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0033] The devices of the wireless network 100 may communicate using an electromagnetic spectrum, which may be subdivided by frequency or wavelength into various classes, bands, channels, etc. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified with frequency range designations FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be understood that FR1 is often referred to (interchangeably) as a "sub-6 GHz" band in various documents and papers, although a portion of FR1 is higher than 6 GHz. A similar nomenclature issue may arise with respect to FR2, which is often referred to (interchangeably) as a "millimeter wave" band in documents and papers, even though it is different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as a "millimeter wave" band by the International Telecommunications Union (ITU).

[0034] Frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have identified operating bands for these mid-band frequencies as frequency range designation FR3 (7.125 GHz to 24.25 GHz). Frequency bands that fall within FR3 may inherit FR1 and / or FR2 characteristics, and thus, in effect, extend the features of FR1 and / or FR2 to the mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0035] With the above examples in mind, it should be understood that unless otherwise specified, terms such as "sub-6 GHz" as used herein may broadly refer to frequencies that may be below 6 GHz, may be within FR1, or may include mid-band frequencies. Additionally, unless otherwise specified, it should be understood that terms such as "millimeter wave" as used herein may broadly refer to frequencies that may be within FR2, FR4, FR4-a or FR4-1, and / or FR5, which may include mid-band frequencies, or may be within the EHF band. It is contemplated that frequencies included within these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0036] In some aspects, the UE 120 may include a communications manager 140. As described in more detail elsewhere herein, the communications manager 140 may determine one or more uplink power control parameters for a sounding reference signal (SRS) transmission based at least in part on whether one or more uplink power control parameters are associated with a transmission configuration indication (TCI) state associated with at least one of an uplink control channel or an uplink shared channel, and transmit an SRS transmission based at least in part on the one or more uplink power control parameters. Additionally or alternatively, the communications manager 140 may perform one or more other operations described herein.

[0037] In some aspects, the base station 110 may include a communications manager 150. As described in more detail elsewhere herein, the communications manager 150 may transmit an indication of one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and may receive an SRS transmission based at least in part on the one or more uplink power control parameters. Additionally or alternatively, the communications manager 150 may perform one or more other operations described herein.

[0038] As noted above, Figure 1 is provided as an example. Other implementations may differ from those described with respect to Figure 1.

[0039] 2 illustrates an example embodiment 200 of a base station 110 (e.g., a network node) communicating with a UE 120 in a wireless network 100 in accordance with the present disclosure. The base station 110 may be equipped with a set of antennas 234a through 234t, such as T antennas, where T≧1. The UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas, where R≧1.

[0040] At the base station 110, a transmit processor 220 may receive data intended for a UE 120 (or set of UEs 120) from a data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCSs) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. The base station 110 may process (e.g., encode and modulate) data for the UE 120 based at least in part on the MCS(es) selected for the UE 120 and provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., related to semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or higher layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for a reference signal (e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS)) and a synchronization signal (e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS)). A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​the data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a set of corresponding modems 232 (e.g., T modems), which are shown as modems 232a through 232t.For example, each output symbol stream may be provided to a modulator component (denoted as MOD) of modem 232. Each modem 232 may use a respective modulator component to process (e.g., for OFDM) a respective output symbol stream to obtain an output sample stream. Each modem 232 may further use a respective modulator component to process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream to obtain a downlink signal. Modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas), denoted as antennas 234a through 234t.

[0041] At the UE 120, a set of antennas 252 (depicted as antennas 252a through 252r) may receive downlink signals from the base station 110 and / or other base stations 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems), depicted as modems 254a through 254r. For example, each received signal may be provided to a demodulator component (depicted as DEMOD) of the modems 254. Each modem 254 may use a respective demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modems 254, perform MIMO detection on the received symbols, if applicable, and provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for the UE 120 to a data sink 260, and provide decoded control and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other examples. In some embodiments, one or more components of the UE 120 may be included within a housing 284.

[0042] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base stations 110 via the communication unit 294.

[0043] One or more antennas (e.g., antennas 234a-t and / or antennas 252a-r) may include or be contained within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, among other examples. An antenna panel, antenna group, set of antenna elements, and / or antenna array may include one or more antenna elements (in a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, and / or one or more antenna elements coupled to one or more transmitting and / or receiving components, such as one or more components of FIG.

[0044] On the uplink, in the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266, if applicable, and may be further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM) and transmitted to the base station 110. In some embodiments, the modem 254 of the UE 120 may include a modulator and a demodulator. In some embodiments, the UE 120 includes a transceiver. The transceiver may include any combination of the antenna(s) 252, the modem(s) 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, and / or the TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., with reference to Figures 3-11).

[0045] At the base station 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component of the modem 232, denoted as DEMOD), detected by a MIMO detector 236, if applicable, and further processed by a receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide decoded data to a data sink 239 and decoded control information to a controller / processor 240. The base station 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 for scheduling one or more UEs 120 for downlink and / or uplink communications. In some embodiments, the modem 232 of the base station 110 may include a modulator and a demodulator. In some embodiments, the base station 110 includes a transceiver. The transceiver may include any combination of antenna(s) 234, modem(s) 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., with reference to FIGS. 3-11).

[0046] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or any other component(s) of FIG. 2 may perform one or more techniques associated with directing uplink power control parameters, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or any other component(s) of FIG. 2 may perform or direct operations, for example, of process 800 of FIG. 8, process 900 of FIG. 9, and / or other processes as described herein. The memory 242 and the memory 282 may store data and program codes for the base station 110 and the UE 120, respectively. In some embodiments, the memory 242 and / or the memory 282 may include a non-transitory computer-readable medium that stores one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of the base station 110 and / or the UE 120 (e.g., directly or after being compiled, translated, and / or interpreted), may cause the one or more processors, the UE 120, and / or the base station 110 to perform or direct operations of, for example, process 800 of FIG. 8, process 900 of FIG. 9, and / or other processes as described herein. In some embodiments, executing the instructions may include executing the instructions, translating the instructions, compiling the instructions, and / or interpreting the instructions, among other examples.

[0047] In some aspects, the UE 120 includes means for determining one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and / or means for transmitting an SRS transmission based at least in part on the one or more uplink power control parameters. The means by which the UE 120 performs the operations described herein may include, for example, one or more of the communications manager 140, the antennas 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0048] In some aspects, the base station 110 includes means for transmitting an indication of one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and / or means for receiving an SRS transmission based at least in part on the one or more uplink power control parameters. The means by which the base station 110 performs the operations described herein may include, for example, one or more of the communications manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antennas 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246.

[0049] 2 are shown as separate components, the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combination component, or in various combinations of components. For example, functionality described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 may be performed by or under the control of controller / processor 280.

[0050] As noted above, Figure 2 is provided as an example. Other implementations may differ from those described with respect to Figure 2.

[0051] 3 illustrates an example 300 of a transmit (Tx) chain 302 and a receive (Rx) chain 304 of a UE 120 in accordance with the present disclosure. In some aspects, one or more components of the Tx chain 302 may be implemented in the transmit processor 264, the TX MIMO processor 266, the modem 254, and / or the controller / processor 280, as described above with respect to FIG. 2. In some aspects, the Tx chain 302 may be implemented in the UE 120 to transmit data 306 (e.g., uplink data, uplink reference signals, and / or uplink control information) to the base station 110 (e.g., a network node) on an uplink channel.

[0052] The encoder 307 may change the signal (e.g., bitstream) 303 into data 306. The data 306 to be transmitted is provided as input from the encoder 307 to a serial-to-parallel (S / P) converter 308. In some aspects, the S / P converter 308 may split the transmit data into N parallel data streams 310.

[0053] The N parallel data streams 310 may then be provided as inputs to a mapper 312. The mapper 312 may map the N parallel data streams 310 onto N constellation points. The mapping may be done using a modulation constellation such as binary phase-shift keying (BPSK), quadrature phase-shift keying (QPSK), 8 phase-shift keying (8PSK), quadrature amplitude modulation (QAM), etc. Thus, the mapper 312 may output N parallel symbol streams 316, each corresponding to one of the N orthogonal subcarriers of an inverse fast Fourier transform (IFFT) component 320. These N parallel symbol streams 316 may be represented in the frequency domain and converted by the IFFT component 320 into N parallel time-domain sample streams 318.

[0054] In some aspects, N parallel modulations in the frequency domain correspond to N modulation symbols in the frequency domain, which is equal to N mapping and N-point IFFT in the frequency domain, which is equal to one (useful) OFDM symbol in the time domain, which is equal to N samples in the time domain. One OFDM symbol in the time domain, Ns, is equal to Ncp (number of guard samples per OFDM symbol) + N (number of useful samples per OFDM symbol).

[0055] The N parallel time-domain sample streams 318 may be converted to an OFDM / OFDMA symbol stream 322 by a parallel-to-serial (P / S) converter 324. A guard insertion component 326 may insert guard intervals between successive OFDM / OFDMA symbols in the OFDM / OFDMA symbol stream 322. The output of the guard insertion component 326 may then be upconverted to a desired transmission frequency band by a radio frequency (RF) front end 328. An antenna 330 may then transmit the resulting signal 332.

[0056] In some aspects, the Rx chain 304 may utilize OFDM / OFDMA. In some aspects, one or more components of the Rx chain 304 may be implemented in the receive processor 258, the MIMO detector 256, the modem 254, and / or the controller / processor 280, as described above with respect to FIG. 2. In some aspects, the Rx chain 304 may be implemented in the UE 120 to receive data 306 (e.g., downlink data, downlink reference signals, and / or downlink control information) from the base station 110 on a downlink channel.

[0057] A transmit signal 332 is shown traveling from the Tx chain 302 to the Rx chain 304 over a wireless channel 334. When the signal 332' is received by an antenna 330', the received signal 332' may be downconverted to a baseband signal by an RF front end 328'. A guard removal component 326' may then remove the guard interval inserted between the OFDM / OFDMA symbols by the guard insertion component 326.

[0058] An output of the guard removal component 326' may be provided to an S / P converter 324'. The output may include an OFDM / OFDMA symbol stream 322', which may split the OFDM / OFDMA symbol stream 322' into N parallel time-domain symbol streams 318', each of which corresponds to one of the N orthogonal subcarriers. A fast Fourier transform (FFT) component 320' may transform the N parallel time-domain symbol streams 318' into the frequency domain and output N parallel frequency-domain symbol streams 316'.

[0059] A demapper 312' may perform the inverse of the symbol mapping operation performed by the mapper 312, and therefore output N parallel data streams 310'. A P / S converter 308' may combine the N parallel data streams 310' into a single data stream 306'. Ideally, the data stream 306' corresponds to the data 306 provided as an input to the Tx chain 302. The data stream 306' may be decoded by a decoder 307' into a decoded data stream 303'.

[0060] In some aspects, the UE 120 may determine or set one or more parameters for the transmitting Tx chain 302 for uplink transmit power control. For example, the UE 120 may determine one or more uplink power control parameters for the transmitting Tx chain 302. The UE 120 may adjust or set one or more of the components in the Tx chain 302 based at least in part on the one or more uplink power control parameters, e.g., to meet a particular transmit power threshold, to meet a signal to interference plus noise ratio (SINR) threshold, and / or to meet another threshold. The one or more uplink power control parameters may be set for uplink transmissions, such as SRS transmissions, physical uplink shared channel (PUSCH) transmissions, physical uplink control channel (PUCCH) transmissions, and / or another type of uplink transmission. The one or more uplink power control parameters may include, for example, a P0 parameter, an alpha parameter, a closed loop index parameter, a pathloss reference signal (PL RS) parameter, and / or another parameter.

[0061] The P0 parameter may include an uplink power control parameter representing a target received power (e.g., for a receiver of an uplink transmission). The alpha parameter may include an uplink power control parameter representing a compensation factor (e.g., a path loss compensation factor) in a power control equation for the Tx chain 302. The closed loop index (CLI) parameter may include an uplink power control parameter indicating a transmit power command (TCP) index to be applied to one or more closed power control loops in the Tx chain 302. In some aspects, the path loss reference signal parameter indicates an amount of path loss (e.g., an amount of signal power lost during transmission to the base station 110). In some aspects, the path loss reference signal parameter indicates resources to be measured by the UE 120 to perform power control for the Tx chain 302. For example, the path loss reference signal parameter may indicate a reference signal to be measured for path loss estimation and power control estimation for the corresponding uplink channel.

[0062] The number and arrangement of components shown in Figure 3 are provided as an example. In practice, there may be additional, fewer, different, or differently arranged components compared to those shown in Figure 3. Furthermore, two or more components shown in Figure 3 may be implemented within a single component, or a single component shown in Figure 3 may be implemented as multiple distributed components. Additionally or alternatively, a set of components shown in Figure 3 (e.g., one or more components) may perform one or more functions that are described as being performed by another set of components shown in Figure 3.

[0063] 4 is a diagram illustrating example physical channels and reference signals 400 in a wireless network in accordance with the present disclosure. As shown in FIG. 4, downlink channels and downlink reference signals can carry information from a base station 110 (e.g., a network node) to a UE 120, and uplink channels and uplink reference signals can carry information from a UE 120 to a base station 110.

[0064] As shown, the downlink channels may include a physical downlink control channel (PDCCH) carrying downlink control information (DCI), a physical downlink shared channel (PDSCH) carrying downlink data, or a physical broadcast channel (PBCH) carrying system information, among other examples. In some aspects, PDSCH communication may be scheduled by PDCCH communication. As further shown, the uplink channels may include a PUCCH carrying uplink control information (UCI), a PUSCH carrying uplink data, or a physical random access channel (PRACH) used for initial network access, among other examples. In some aspects, UE 120 may transmit acknowledgement (ACK) or negative acknowledgement (NACK) feedback (e.g., ACK / NACK feedback or ACK / NACK information) in the UCI on the PUCCH and / or PUSCH.

[0065] As further shown, the downlink reference signals may include a synchronization signal block (SSB), a channel state information (CSI) reference signal (CSI-RS), a DMRS, a positioning reference signal (PRS), or a phase tracking reference signal (PTRS), among other examples. As also shown, the uplink reference signals may include an SRS, a DMRS, or a PTRS, among other examples.

[0066] The SSBs may carry information used for initial network acquisition and synchronization, such as the PSS, SSS, PBCH, and PBCH DMRS. The SSBs may also be referred to as synchronization signal / PBCH (SS / PBCH) blocks. In some aspects, the base station 110 may transmit multiple SSBs on multiple corresponding beams, and the SSBs may be used for beam selection.

[0067] The CSI-RS may carry information used for downlink channel estimation (e.g., downlink CSI acquisition), which may be used for scheduling, link adaptation, or beam management, among other examples. The base station 110 may configure a set of CSI-RS for the UE 120, and the UE 120 may measure the configured set of CSI-RS. Based at least in part on the measurements, the UE 120 may perform channel estimation and report channel estimation parameters, such as a CQI, a precoding matrix indicator (PMI), a CSI-RS resource indicator (CRI), a layer indicator (LI), a rank indicator (RI), or an RSRP, among other examples, to the base station 110 (e.g., in a CSI report). The base station 110 may use the CSI report to select transmission parameters for downlink communication to the UE 120, such as a number of transmission layers (e.g., rank), a precoding matrix (e.g., precoder), an MCS, or an improved downlink beam (e.g., using a beam improvement procedure or a beam management procedure), among other examples.

[0068] A DMRS may carry information used to estimate a wireless channel for demodulation of an associated physical channel (e.g., PDCCH, PDSCH, PBCH, PUCCH, or PUSCH). The design and mapping of a DMRS may be specific to the physical channel for which the DMRS is used for estimation. A DMRS is UE specific, can be beamformed, can be restricted within scheduled resources (e.g., rather than being transmitted over a wideband), and can be transmitted only when necessary. As shown, a DMRS is used for both downlink and uplink communications.

[0069] The PTRS may carry information used to compensate for oscillator phase noise. Typically, phase noise increases as oscillator carrier frequency increases. Thus, the PTRS may be utilized at high carrier frequencies, such as millimeter wave frequencies, to mitigate phase noise. The PTRS may be used to track the phase of the local oscillator and enable suppression of phase noise and common phase error (CPE). As shown, PTRSs are used for both downlink communications (e.g., on the PDSCH) and uplink communications (e.g., on the PUSCH).

[0070] The PRS may carry information used to enable timing or ranging measurements of the UE 120 based on signals transmitted by the base station 110 to improve observed time difference of arrival (OTDOA) positioning performance. For example, the PRS may be a pseudorandom QPSK sequence mapped in a diagonal pattern with a shift in frequency and time to avoid collisions with cell-specific reference signals and control channels (e.g., PDCCH). In general, the PRS may be designed to improve detectability by the UE 120, which may need to detect downlink signals from multiple neighboring base stations to perform OTDOA-based positioning. Thus, the UE 120 may receive the PRS from multiple cells (e.g., a reference cell and one or more neighboring cells) and may report a reference signal time difference (RSTD) based on OTDOA measurements associated with the PRS received from the multiple cells. In some aspects, the base station 110 may then calculate a position of the UE 120 based on the RSTD measurements reported by the UE 120.

[0071] The SRS may carry information used for uplink channel estimation, which may be used for scheduling, link adaptation, precoder selection, or beam management, among other examples. The base station 110 may configure one or more SRS resource sets for the UE 120, and the UE 120 may transmit the SRS on the configured SRS resource sets. The SRS resource sets may have a configured use, such as uplink CSI acquisition, downlink CSI acquisition for reciprocity-based operation, uplink beam management, among other examples. The base station 110 may measure the SRS, perform channel estimation based at least in part on the measurements, and use the SRS measurements to configure communications with the UE 120.

[0072] In some aspects, one or more of the reference signals described with respect to FIG. 4 may be used or measured as a path loss reference signal. For example, the base station 110 may transmit CSI-RS (e.g., periodic CSI-RS (P-CSI-RS) or another type of CSI-RS), SSB, and / or another reference signal as a path loss reference signal, and the UE 120 may perform one or more measurements of the path loss reference signal for power control. The UE 120 may perform power control by estimating a path loss between the UE 120 and the base station 110 based at least in part on the one or more measurements and by using the estimated path loss in a power control algorithm to adjust the Tx chain 302 of the UE 120.

[0073] As noted above, Figure 4 is provided as an example. Other implementations may differ from that described with respect to Figure 4.

[0074] FIG. 5 is a diagram illustrating an example SRS resource set 500 in accordance with this disclosure.

[0075] The base station 110 (e.g., a network node) may configure the UE 120 with one or more SRS resource sets to allocate resources for SRS transmission by the UE 120. For example, the configuration of the SRS resource set may be indicated in a radio resource control (RRC) message (e.g., an RRC configuration message or an RRC reconfiguration message). As indicated by reference numeral 505, the SRS resource set may include one or more resources (e.g., denoted as SRS resources), which may include time resources and / or frequency resources (e.g., slots, symbols, resource blocks, and / or periods of time resources).

[0076] As indicated by reference numeral 510, an SRS resource may include one or more antenna ports on which the SRS should be transmitted (e.g., in time-frequency resources). Thus, a configuration of an SRS resource set may indicate one or more time-frequency resources on which the SRS should be transmitted, and may indicate one or more antenna ports on which the SRS should be transmitted in those time-frequency resources. In some aspects, a configuration of an SRS resource set may indicate a use case of the SRS resource set (e.g., in an SRS-SetUse information element). For example, an SRS resource set may have an antenna switching, codebook, non-codebook, or beam management use case.

[0077] The antenna switching SRS resource set may be used to indicate downlink CSI with reciprocity between the uplink and downlink channels. For example, when there is reciprocity between the uplink and downlink channels, the base station 110 may use the antenna switching SRS (e.g., SRS transmitted using resources of the antenna switching SRS resource set) to collect downlink CSI (e.g., to determine the downlink precoder to be used to communicate with the UE 120). A guard period may be used and / or required between two consecutive SRS resources for antenna switching. In some aspects, the length of the guard period may be indicated in the standard specification. The number of guard symbols in the guard period may depend on the tone spacing setting of the OFDM symbols in the corresponding bandwidth portion or component carrier. For example, the guard period may be two OFDM symbols for 120 kHz tone spacing, eight OFDM symbols for 480 kHz tone spacing, and 16 OFDM symbols for 960 tone spacing, with the number of OFDM symbols selected to ensure that the length of the guard period remains the same for all tone spacing configurations. Additionally and / or alternatively, UE 120 may report the minimum length of the guard time between two consecutive SRS resources to base station 110 as a UE capability. UE 120 may report the length of the guard period in terms of the number of guard symbols. In addition, UE 120 may report the length of the guard time for each tone spacing of an OFDM symbol.

[0078] The codebook SRS resource set may be used to indicate uplink CSI when the base station 110 indicates an uplink precoder to the UE 120. For example, when the base station 110 is configured to indicate an uplink precoder to the UE 120 (e.g., using a precoder codebook), the base station 110 may use the codebook SRS (e.g., SRS transmitted using resources of the codebook SRS resource set) to collect uplink CSI (e.g., to determine an uplink precoder to be indicated to the UE 120 and used by the UE 120 to communicate with the base station 110). In some aspects, at least a virtual port (e.g., a combination of two or more antenna ports) having a maximum transmit power may be supported for the codebook SRS.

[0079] The non-codebook SRS resource set may be used to indicate uplink CSI when UE 120 selects an uplink precoder (e.g., instead of base station 110 indicating the uplink precoder to be used by UE 120). For example, when UE 120 is configured to select an uplink precoder, base station 110 may use a non-codebook SRS (e.g., an SRS transmitted using resources of a non-codebook SRS resource set) to collect uplink CSI. In this case, the non-codebook SRS (e.g., may be indicated to base station 110) may be precoded using the precoder selected by UE 120.

[0080] The beam management SRS resource set may be used to indicate CSI for millimeter wave communications.

[0081] SRS resources may be configured as periodic, semi-persistent (sometimes referred to as semi-persistent scheduling (SPS)), or aperiodic. Periodic SRS resources may be configured via a configuration message indicating the periodicity (e.g., a slot-level periodicity where SRS resources occur every Y slots) and slot offset of the SRS resources. In some cases, periodic SRS resources may be always activated and may not be dynamically activated or deactivated. Semi-persistent SRS resources may also be configured via a configuration message indicating the periodicity and slot offset of the semi-persistent SRS resources and may be dynamically activated and deactivated (e.g., using a DCI or a medium access control (MAC) control element (CE) (MAC control element, MAC-CE)). Aperiodic SRS resources may be dynamically triggered, such as via a DCI (e.g., a UE-specific DCI or a group-common DCI) or a MAC-CE.

[0082] In some aspects, the UE 120 may be configured with a mapping between SRS ports (e.g., antenna ports) and corresponding SRS resources. The UE 120 may transmit the SRS on a particular SRS resource using the SRS port indicated in the configuration. In some aspects, the SRS resource may span N contiguous symbols in a slot (e.g., where N is equal to 1, 2, or 4). The UE 120 may be configured with X SRS ports (e.g., where X≦4). In some aspects, each of the X SRS ports may be mapped to a corresponding symbol of the SRS resource and used for transmission of the SRS in that symbol.

[0083] As shown in FIG. 5, in some aspects, different SRS resource sets indicated to UE 120 (e.g., having different use cases) may overlap (e.g., in time and / or frequency, such as within the same slot). For example, as indicated by reference numeral 515, a first SRS resource set (e.g., denoted as SRS resource set 1) is shown as having a first use case (use case 1). The first use case may include an antenna switching use case. As shown, this example antenna switching SRS resource set includes a first SRS resource (denoted as SRS resource A) and a second SRS resource (denoted as SRS resource B). Thus, an antenna switching SRS may be transmitted in SRS resource A (e.g., a first time-frequency resource) using antenna port 0 and antenna port 1, and in SRS resource B (e.g., a second time-frequency resource) using antenna port 2 and antenna port 3.

[0084] As indicated by reference numeral 520, a second SRS resource set (e.g., denoted as SRS resource set 2) may have a second use case (use case 2). The second use case may be a codebook use case. As shown, this example codebook SRS resource set includes only a first SRS resource (denoted as SRS resource A). Thus, a codebook SRS may be transmitted in SRS resource A (e.g., a first time-frequency resource) using antenna port 0 and antenna port 1. In this case, UE 120 may not transmit a codebook SRS in SRS resource B (e.g., a second time-frequency resource) using antenna port 2 and antenna port 3.

[0085] As noted above, Figure 5 is provided as an example. Other implementations may differ from those described with respect to Figure 5.

[0086] 6 is a diagram illustrating an example 600 of using beams for communication between a base station and a UE in accordance with the present disclosure. As shown in FIG. 6, a base station 110 (e.g., a network node) and a UE 120 may communicate with each other.

[0087] The base station 110 may transmit to a UE 120 located within the coverage area of ​​the base station 110. The base station 110 and the UE 120 may be configured for beamformed communications, where the base station 110 may transmit in the direction of the UE 120 using a directional BS transmit beam, and the UE 120 may receive the transmission using a directional UE receive beam. Each BS transmit beam may have an associated beam ID, beam direction, or beam symbol, among other examples. The base station 110 may transmit downlink communications via one or more BS transmit beams 605.

[0088] The UE 120 may attempt to receive downlink transmissions via one or more UE receive beams 610, which may be configured using different beamforming parameters in the receive circuitry of the UE 120. The UE 120 may identify a particular BS transmit beam 605, denoted as BS transmit beam 605-A, and a particular UE receive beam 610, denoted as UE receive beam 610-A, that provide relatively favorable performance (e.g., have best channel quality of different measured combinations of BS transmit beam 605 and UE receive beam 610). In some examples, the UE 120 may transmit an indication of which BS transmit beam 605 is identified by the UE 120 as a preferred BS transmit beam that the base station 110 may select for transmission to the UE 120. The UE 120 may thus achieve and maintain a beam pair link (BPL) (e.g., a combination of a BS transmitting beam 605-A and a UE receiving beam 610-A) with the base station 110 for downlink communications, and the BPL may be further improved and maintained in accordance with one or more established beam improvement procedures.

[0089] A downlink beam, such as a BS transmit beam 605 or a UE receive beam 610, may be associated with a TCI state. The TCI state may dictate a directivity or characteristic of the downlink beam, such as one or more quasi-collocation (QCL) properties of the downlink beam. The QCL properties may include, for example, Doppler shift, Doppler spread, average delay, delay spread, or spatial reception parameters, among other examples. In some examples, each BS transmit beam 605 may be associated with an SSB, and the UE 120 may indicate a preferred BS transmit beam 605 by transmitting an uplink transmission in resources of the SSB associated with the preferred BS transmit beam 605. A particular SSB may have an associated TCI state (e.g., for an antenna port or for beamforming). The base station 110 may indicate a downlink BS transmit beam 605 based at least in part on an antenna port QCL property, which may be dictated by the TCI state, in some examples. A TCI state may be associated with one downlink reference signal set (e.g., SSB and aperiodic, periodic, or semi-persistent CSI-RS) for different QCL types (e.g., QCL types for different combinations of Doppler shift, Doppler spread, average delay, delay spread, or spatial reception parameters, among other examples). In the case where the QCL type dictates spatial reception parameters, the QCL type may correspond to analog receive beamforming parameters of the UE receive beam 610 at the UE 120. Thus, the UE 120 may select a corresponding UE receive beam 610 from the set of BPLs based at least in part on the base station 110 instructing the BS transmit beam 605 via the TCI indication.

[0090] The base station 110 may maintain a set of activated TCI states for downlink shared channel transmissions and a set of activated TCI states for downlink control channel transmissions. The set of activated TCI states for downlink shared channel transmissions may correspond to beams that the base station 110 uses for downlink transmissions on a PDSCH. The set of activated TCI states for downlink control channel communications may correspond to beams that the base station 110 may use for downlink transmissions on a physical downlink control channel (PDCCH) or in a control resource set (CORESET). The UE 120 may also maintain a set of activated TCI states for receiving downlink shared channel transmissions and CORESET transmissions. If a TCI state is activated for the UE 120, the UE 120 may have one or more antenna configurations based at least in part on the TCI state, and the UE 120 may not need to reconfigure antennas or antenna weighting settings. In some examples, the set of activated TCI states for UE 120 (eg, activated PDSCH TCI states and activated CORESET TCI states) may be configured by a configuration message, such as an RRC message.

[0091] Similarly, for uplink communications, the UE 120 may transmit in the direction of the base station 110 using a directional UE transmit beam, and the base station 110 may receive the transmission using a directional BS receive beam. Each UE transmit beam may have an associated beam ID, beam direction, or beam symbol, among other examples. The UE 120 may transmit uplink communications via one or more UE transmit beams 615.

[0092] The base station 110 may receive uplink transmissions via one or more BS receive beams 620. The base station 110 may identify a particular UE transmit beam 615, denoted as UE transmit beam 615-A, and a particular BS receive beam 620, denoted as BS receive beam 620-A, that provide relatively favorable performance (e.g., have the best channel quality of different measured combinations of UE transmit beam 615 and BS receive beam 620). In some examples, the base station 110 may transmit an indication of which UE transmit beam 615 is identified by the base station 110 as a preferred UE transmit beam that the base station 110 may select for transmissions from the UE 120. The UE 120 and base station 110 may thus achieve and maintain a BPL (e.g., a combination of UE transmit beam 615-A and BS receive beam 620-A) for uplink communications, and the BPL may be further improved and maintained according to one or more established beam improvement procedures. An uplink beam, such as a UE transmit beam 615 or a BS receive beam 620, may be associated with a spatial relationship that may dictate the directionality or characteristics of the uplink beam, similar to one or more QCL properties described above.

[0093] In some aspects, a unified framework for TCI may be implemented in a wireless network (e.g., wireless network 100). For example, a joint TCI (sometimes referred to as a unified TCI) for uplink and downlink channels / signals may be shared for UE-dedicated reception on PDSCH / PDCCH and for transmission on PUSCH / PUCCH (e.g., in 3GPP Release 17 and / or later). The joint TCI state may replace spatial relation information (SpatialRelationInfo) (e.g., 3GPP Release 15 or 16 SpatialRelationInfo) to indicate uplink spatial filter information. The joint TCI state may be updated in MAC-CE, DCI, and / or another downlink communication. For example, a downlink non-UE dedicated PDCCH / PDSCH associated with a serving cell physical cell identifier (PCI) or aperiodic CSI-RS (AP-CSI-RS) for beam management or CSI may share joint TCI state with UE dedicated reception on dynamically granted PUSCH resources, configured grant PUSCH resources, and / or dedicated PUCCH resources. As another example, an SRS for beam management, for antenna switching, for codebook-based transmission, or for non-codebook-based transmission may share joint TCI state with dynamically granted PUSCH resources, configured grant PUSCH resources, and / or dedicated PUCCH resources. TCI state sharing may be configured via RRC or another type of downlink signaling.

[0094] An SRS resource (or an SRS resource set) that is a valid target signal of spatial relationship may be configured as a target signal (e.g., a target reference signal) of an uplink TCI or a joint TCI (e.g., uplink and downlink TCI). This does not require a new type of source reference signal in addition to the one supported for the uplink TCI and / or the joint TCI. Furthermore, this does not imply that the downlink and uplink TCI state pools are separate or shared for the separate downlink and uplink TCI states. UE 120 is not required to support both the unified TCI framework and the optional (e.g., 3GPP® Release 15 / 16) feature of SRS spatial relationship information in the same band. In some cases, if UE 120 is configured with SpatialRelationInfo (e.g., 3GPP® Release 17 TCI or later) on any component carrier in the band, UE 120 is not expected (or allowed) to be configured with spatial relationship information (e.g., 3GPP® Release 15 or 16 TCI). The component carrier list for multiple component carrier beam indication should not (or may not) include any component carriers configured with TCI. The SRS for beam management, antenna switching, codebook-based transmission, or non-codebook-based transmission may share the same indicated TCI state (e.g., joint TCI state in 3GPP Release 17 and later) with the dynamically granted PUSCH resources, the configured granted PUSCH resources, and / or the dedicated PUCCH resources. The TCI state sharing may be based on RRC configuration and / or another type of configuration. However, in some cases, the SRS may also use a different TCI state than the indicated TCI state for PUSCH / PUCCH.

[0095] Regarding uplink power control, in case of a unified TCI framework, the setting of the uplink power control parameters for SRS transmission (e.g., the uplink power control parameters described above in FIG. 3) may be associated with an uplink TCI state or a joint TCI state. If the uplink power control parameters for SRS transmission are not associated with an uplink TCI state or a joint TCI state, the uplink power control parameters may be independent of the uplink TCI state or the joint TCI state per bandwidth portion (BWP). If the uplink power control parameters for SRS transmission (or PUSCH / PUCCH transmission) are associated with an uplink TCI state or a joint TCI state per BWP, one separate setting may be associated with each uplink TCI state or each joint TCI state per BWP via RRC for each SRS transmission (or each PUSCH / PUCCH transmission).

[0096] In some cases (e.g., in 3GPP Release 16), uplink power control parameters for SRS transmission may be set by RRC for each SRS resource set. Each uplink TCI state or joint TCI state may be associated with an uplink power control parameter set in RRC. In some cases (e.g., in 3GPP Release 17), uplink power control parameters may be channel-dependent in the BWP and optionally TCI state-dependent. Here, each uplink TCI state or joint TCI state may be associated with an uplink power control parameter set for SRS transmission. If an uplink power control parameter set is not associated with an uplink TCI state or joint TCI state, the uplink power control parameter set may be set for SRS regardless of the TCI state in the BWP.

[0097] As noted above, Figure 6 is provided as an example, other implementations may differ from what is described with respect to Figure 6.

[0098] A base station (e.g., a network node) may want to configure SRS transmissions along spatial directions with different uplink power control parameters so that the base station may test different uplink power control parameters to optimize uplink reception at the base station. In some cases (e.g., in 3GPP® Release 16), the base station may associate different SRS resource sets with the same spatial relationship information but with different uplink power control parameters. However, in some cases (e.g., in 3GPP® Release 17), the uplink power control parameters may be associated with TCI states (e.g., uplink TCI state, joint TCI state). As a result, if the uplink power control parameter settings for SRS always follow the associated TCI state, there is always a coupling between the uplink power control parameters and the spatial filter settings for SRS. Thus, the base station may not be able to test different uplink power control parameters along the same spatial direction for uplink reception optimization. This may, among other examples, reduce flexibility in optimizing uplink reception at the base station, may reduce uplink reception quality, may increase the amount of uplink communications that are dropped at the base station (e.g., due to reduced uplink reception quality), and / or may increase retransmissions (increasing consumption of wireless network resources, power resources at the base station, memory resources at the base station, and / or processing resources at the base station).

[0099] Some aspects described herein provide flexible techniques for indicating uplink power control parameters. The techniques described herein increase flexibility in indicating different uplink power control parameters for SRS transmissions, especially in wireless networks where TCI states (e.g., uplink TCI state shared for SRS and PUSCH / PUCCH transmissions, joint TCI state shared for uplink and downlink transmissions) are used for uplink transmissions. One or more uplink parameters for SRS transmissions may be indicated by a base station (e.g., base station 110) or determined by a UE (e.g., UE 120). As described herein, the one or more uplink parameters may be based at least in part on whether the one or more uplink power control parameters are associated with a TCI state (e.g., uplink TCI state, joint TCI state). Thus, the base station is enabled to decouple the uplink power control parameters from the TCI state. This allows the base station to configure and / or indicate a different set of uplink power control parameters for SRS transmission in the spatial direction, such that the base station can optimize uplink reception in the spatial direction (e.g., by configuring the UE with an optimized set of uplink power control parameters), which may, among other examples, increase uplink reception quality and reliability at the base station, reduce the amount of dropped uplink transmissions at the base station, and / or reduce retransmissions by the base station (which may reduce consumption of wireless network resources, power resources at the base station, memory resources at the base station, and / or processing resources at the base station).

[0100] FIG. 7 illustrates an example 700 of indicating uplink power control parameters in accordance with the present disclosure. As shown in FIG. 7, the example 700 includes communication between a base station 110 (e.g., a network node) and a UE 120. The base station 110 and the UE 120 may be included in a wireless network 100. The base station 110 and the UE 120 may communicate over an access link in the wireless network 100. The access link may include an uplink and a downlink. The UE 120 may send an uplink transmission to the base station 110 on the uplink. The uplink transmission may include a PUSCH transmission, a PUCCH transmission, an SRS transmission, and / or another type of uplink transmission. The base station 110 may indicate the uplink power control parameters to the UE 120, and the UE 120 may determine the uplink power control parameters using techniques described herein.

[0101] As indicated by reference numeral 705, the base station may transmit (and the UE 120 may receive) an indication of one or more uplink power control parameters for the SRS transmission by the UE 120. As indicated by reference numeral 710, the UE 120 may determine the one or more uplink power control parameters for the SRS transmission. In some aspects, the UE 120 determines the one or more uplink power control parameters for the SRS transmission based at least in part on the indication. The one or more uplink power control parameters may include one or more of the uplink power control parameters described above in FIG. 3 and / or another uplink power control parameter.

[0102] The indication of one or more uplink power control parameters by base station 110 and / or the determination of one or more uplink power control parameters by UE 120 may be based at least in part on whether the one or more uplink power control parameters are associated with a TCI state. The TCI state may include an uplink TCI state associated with an uplink control channel (e.g., PUCCH) and / or an uplink shared channel (e.g., PUSCH), a joint TCI state associated with an uplink channel and a downlink channel, and / or another type of TCI state. Base station 110 enables decoupling of one or more uplink power control parameters from the TCI state, which enables base station 110 to selectively indicate uplink power control parameters that are or are not associated with a TCI state for SRS transmission. This provides base station 110 with improved flexibility to configure or schedule SRS transmission by UE 120 with different sets of uplink power control parameters in the same spatial direction.

[0103] In some aspects, if one or more uplink power control parameters are not associated with a TCI state, then one or more uplink power control parameters (indicated by base station 110 and determined by UE 120) may be set per SRS resource set. In these aspects, UE 102 may determine, and base station 110 may indicate, the one or more uplink power control parameters based at least in part on the SRS resource set associated with the SRS transmission. In other words, UE 120 may determine the one or more uplink power control parameters associated with the SRS resource set as the one or more uplink power control parameters associated with the SRS transmission.

[0104] The base station 110 may indicate one or more uplink power control parameters in an SRS resource set information element (IE) (e.g., in an RRC communication, a DCI communication, a MAC-CE communication, and / or another type of downlink communication). Additionally and / or alternatively, the base station 110 may indicate one or more uplink power control parameters in a parameter set outside of the SRS resource set IE. For example, the base station 110 may configure multiple uplink power control parameter sets having different combinations of uplink power control parameters and / or uplink power control parameter values ​​(or the sets may be configured in a wireless communication standard), and the base station 110 may indicate one of the uplink power control parameter sets to the UE 120 in a parameter set identifier field in the downlink communication. Each SRS resource set may be associated with an identifier of the uplink power control parameter set. This allows the base station 110 to reduce the amount of overall uplink power control parameter sets that may be selected (which reduces the complexity and overhead for indicating one or more uplink power control parameters).

[0105] In some aspects, if one or more uplink power control parameters are not associated with a TCI state, then one or more uplink power control parameters (indicated by base station 110 and determined by UE 120) may be set per SRS resource. In these aspects, UE 102 may determine, and base station 110 may indicate, the one or more uplink power control parameters based at least in part on the SRS resource associated with the SRS transmission. In other words, UE 120 may determine the one or more uplink power control parameters associated with the SRS resource as the one or more uplink power control parameters associated with the SRS transmission.

[0106] The base station 110 may indicate one or more uplink power control parameters in the SRS resource IE (e.g., in an RRC communication, a DCI communication, a MAC-CE communication, and / or another type of downlink communication). Additionally and / or alternatively, the base station 110 may indicate one or more uplink power control parameters in a parameter set outside the SRS resource IE. For example, the base station 110 may configure multiple uplink power control parameter sets having different combinations of uplink power control parameters and / or uplink power control parameter values ​​(or the sets may be configured in a wireless communication standard), and the base station 110 may indicate one of the uplink power control parameter sets to the UE 120 in a parameter set identifier field in the downlink communication. Each SRS resource may be associated with an identifier of the uplink power control parameter set. This allows the base station 110 to reduce the amount of overall uplink power control parameter sets that may be selected (which reduces the complexity and overhead for indicating one or more uplink power control parameters).

[0107] Alternatively, if uplink power control parameters are not configured for each SRS resource, the UE 102 may determine, and the base station 110 may instruct, one or more uplink power control parameters based at least in part on the SRS resource set in which the SRS resource is included. In other words, the UE 120 may determine one or more uplink power control parameters associated with the SRS resource set as the one or more uplink power control parameters associated with the SRS transmission.

[0108] In some aspects, the base station 110 transmits (and the UE 120 receives) an indication of the updated uplink power control parameter(s). This allows the base station 110 to update or modify the relationship between the updated uplink power control parameter(s), the SRS resources, and / or the SRS resource sets. The base station 110 may transmit the indication of the updated uplink power control parameter(s) in an RRC communication, a DCI communication, a MAC-CE communication, and / or another type of downlink communication.

[0109] In some aspects, if one or more uplink power control parameters are associated with a TCI state, one or more uplink power control parameters (indicated by base station 110 and determined by UE 120) may be set for each TCI state during the BWP. In these aspects, UE 102 may determine and base station 110 may indicate one or more uplink power control parameters based at least in part on the TCI state. In other words, UE 120 may determine one or more uplink power control parameters associated with a TCI state as one or more uplink power control parameters associated with an SRS transmission. UE 120 does not expect one or more uplink control parameters to be set in an SRS resource IE or in an SRS resource set IE and refrains from determining one or more uplink control parameters based at least in part on an SRS resource IE or in an SRS resource set IE. Base station 110 may indicate the TCI state in RRC communications, DCI communications, MAC-CE communications, and / or another type of downlink communications.

[0110] Alternatively, different sets of uplink control parameters may be associated with the TCI state and the SRS resource IE (or SRS resource set IE). Here, the UE 120 may use one or more uplink power control parameters associated with the TCI state or may use one or more uplink power control parameters associated with the SRS resource IE (or SRS resource set IE). For example, the UE 120 may determine one or more uplink power control parameters as the one or more uplink power control parameters associated with the TCI state and may refrain from determining one or more uplink power control parameters as the one or more other uplink power control parameters associated with the SRS resource IE (or SRS resource set IE). As another example, the UE 120 may determine one or more uplink power control parameters as the one or more uplink power control parameters associated with the SRS resource IE (or SRS resource set IE) and may refrain from determining one or more uplink power control parameters as the one or more other uplink power control parameters associated with the TCI state.

[0111] In some cases, UE 120 may be capable of supporting one or more configurations for uplink power control parameter indication, and different sets of uplink control parameters may be associated with a TCI state and an SRS resource IE (or an SRS resource set IE). For example, UE 120 may be capable of supporting different sets of uplink control parameters and may be associated with a TCI state and an SRS resource IE (or an SRS resource set IE). As another example, UE 120 may be capable of supporting only uplink power control parameters that are indicated by a TCI state.

[0112] In some aspects, the UE 120 may transmit an indication indicating capabilities to the base station 110. The indication of capabilities may include an indication of whether the UE 120 supports different sets of uplink control parameters that may be associated with the TCI state and the SRS resource IE (or SRS resource set IE) or whether the UE 102 supports only the uplink power control parameters indicated by the TCI state. The base station 110 may receive the indication of capabilities and may indicate to the UE 120 one or more uplink power control parameters based at least in part on the configuration. For example, the base station 110 may selectively indicate one or more uplink control parameters associated with the TCI state or the SRS resource IE (or SRS resource set IE) based at least in part on the capabilities indicating that the UE 120 supports different sets of uplink control parameters that may be associated with the TCI state and the SRS resource IE (or SRS resource set IE). As another example, the base station 110 may indicate one or more uplink control parameters associated with the TCI state based at least in part on the ability of the UE 120 to indicate that it supports only uplink control parameters associated with the TCI state.

[0113] In some aspects, the indication of one or more uplink power control parameters by base station 110 and / or the determination of one or more uplink power control parameters by UE 120 may be based at least in part on whether an SRS resource associated with an SRS transmission shares a TCI state with an uplink control channel or an uplink shared channel in addition to whether the one or more uplink power control parameters are associated with a TCI state. If an SRS resource associated with an SRS transmission shares a TCI state, base station 110 may transmit the indication of the one or more uplink power control parameters and / or UE 120 may determine the one or more uplink power control parameters based at least in part on whether the one or more uplink power control parameters are associated with a TCI state using the techniques described above. If the SRS resources associated with the SRS transmission do not share a TCI state (e.g., the SRS resources are associated with different TCI states), base station 110 may transmit an indication of one or more uplink power control parameters and / or UE 120 may determine the one or more uplink power control parameters based at least in part on the SRS resource set in which the SRS resource is included.

[0114] Alternatively, if the SRS resource associated with the SRS transmission shares a TCI state, base station 110 may transmit an indication of one or more uplink power control parameters and / or UE 120 may determine the one or more uplink power control parameters based at least in part on whether the one or more uplink power control parameters are associated with a TCI state using the techniques described above.

[0115] As indicated by reference numeral 715, the UE 120 may transmit an SRS transmission (and the base station 110 may receive the SRS transmission). The SRS transmission may be based at least in part on one or more uplink power control parameters determined by the UE 120 and / or indicated by the base station 110. For example, the UE 120 may measure a particular type of reference signal, such as a path loss reference signal indicated by the one or more uplink power control parameters, and adjust the Tx chain 302 of the UE 120 based at least in part on the result of the measurement. As another example, the UE 120 may adjust the Tx chain 302 of the UE 120 based at least in part on an amount of path loss between the UE 120 and the base station 110 indicated by the one or more uplink power control parameters. As another example, the UE 120 may adjust the Tx chain 302 of the UE 120 based at least in part on a target received power (e.g., a P0 value) indicated by the one or more uplink power control parameters. As another example, the UE 120 may adjust the Tx chain 302 of the UE 120 based at least in part on a path loss compensation factor (e.g., an alpha value) indicated by one or more uplink power control parameters. As another example, the UE 120 may adjust the Tx chain 302 of the UE 120 based at least in part on a closed loop index (e.g., a closed loop index value) indicated by one or more uplink power control parameters.

[0116] As noted above, Figure 7 is provided as an example. Other implementations may differ from what is described with respect to Figure 7.

[0117] 8 illustrates an example process 800 performed, for example, by a UE, in accordance with the present disclosure. The example process 800 is an example in which a UE (e.g., UE 120) performs operations associated with indicating uplink power control parameters.

[0118] 8, in some aspects, process 800 may include determining one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel (block 810). For example, the UE (e.g., using the communications manager 140 and / or the determining component 1008 illustrated in FIG. 10) may determine one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, as described above.

[0119] 8, in some aspects, process 800 may include transmitting an SRS transmission based at least in part on the one or more uplink power control parameters (block 820). For example, the UE (e.g., using the communications manager 140 and / or the transmitting component 1004 shown in FIG. 10) may transmit an SRS transmission based at least in part on the one or more uplink power control parameters, as described above.

[0120] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or with respect to one or more other processes described elsewhere herein.

[0121] In a first aspect, the one or more uplink power control parameters include at least one of a target received power, a path loss compensation factor, a closed loop index, or a path loss reference signal parameter.

[0122] In a second aspect, either alone or in combination with the first aspect, a pathloss reference signal parameter indicates a reference signal to be measured for pathloss estimation and power control estimation.

[0123] In a third aspect, alone or in combination with one or more of the first and second aspects, the one or more uplink power control parameters are not associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on an SRS resource set associated with the SRS transmission.

[0124] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the one or more uplink power control parameters are indicated in the downlink communication in an SRS resource set information element associated with an SRS resource set, or in the downlink communication in a parameter set identifier field indicating a parameter set identifier associated with the one or more uplink power control parameters, the parameter set identifier being associated with the SRS resource set.

[0125] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the one or more uplink power control parameters are not associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on SRS resources associated with the SRS transmission.

[0126] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, one or more uplink power control parameters are configured in the SRS resource.

[0127] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the one or more uplink power control parameters are configured for an SRS resource set in which the SRS resource is included, and determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on the SRS resource being included in the SRS resource set.

[0128] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the one or more uplink power control parameters are indicated in the downlink communication in an SRS resource information element associated with an SRS resource, or in the downlink communication in a parameter set identifier field indicating a parameter set identifier associated with the one or more uplink power control parameters, the parameter set identifier being associated with the SRS resource.

[0129] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the process 800 includes receiving, in a medium access control control element, an indication of updated one or more uplink power control parameters, the updated one or more uplink power control parameters being associated with an SRS resource associated with the SRS transmission.

[0130] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on the one or more uplink power control parameters being associated with the TCI state.

[0131] In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the process 800 includes refraining from determining one or more uplink power control parameters based at least in part on an indication of one or more other uplink power control parameters indicated in the SRS resource information element or in the SRS resource set information element.

[0132] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on at least one of an SRS resource associated with an SRS transmission or an SRS resource set in which the SRS resource is included.

[0133] In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the process 800 includes refraining from determining one or more uplink power control parameters based at least in part on an indication of one or more other uplink power control parameters associated with the TCI state.

[0134] In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the process 800 includes transmitting an indication of a capability to support selective use of other uplink power control parameters not associated with the TCI state or one or more uplink power control parameters associated with the TCI state.

[0135] In a fifteenth aspect, either alone or in combination with one or more of the first to fourteenth aspects, at least one of the SRS resources associated with an SRS transmission or the SRS resource set in which the SRS resource is included shares a TCI state with at least one of the uplink control channel or the uplink shared channel.

[0136] In a sixteenth aspect, either alone or in combination with one or more of the first to fifteenth aspects, an SRS resource associated with an SRS transmission, or at least one of the SRS resource sets in which the SRS resource is included, is associated with another TCI state different from a TCI state associated with at least one of the uplink control channel or the uplink shared channel.

[0137] 8 illustrates example blocks of process 800, in some aspects process 800 may include additional, fewer, different, or differently arranged blocks compared to the blocks illustrated in FIG 8. Additionally or alternatively, two or more of the blocks of process 800 may be performed in parallel.

[0138] 9 illustrates an example process 900 performed, for example, by a base station (network node) in accordance with the present disclosure. The example process 900 is an example in which a base station (e.g., base station 110) performs operations associated with indicating an uplink power control parameter.

[0139] 9, in some aspects, process 900 may include transmitting an indication of one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel (block 910). For example, the base station (e.g., using the communications manager 150 and / or the transmitting component 1104 shown in FIG. 11) may transmit an indication of one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, as described above.

[0140] 9, in some aspects, process 900 may include receiving an SRS transmission based at least in part on the one or more uplink power control parameters (block 920). For example, a base station (e.g., using communications manager 150 and / or receiving component 1102 shown in FIG. 11) may receive an SRS transmission based at least in part on the one or more uplink power control parameters, as described above.

[0141] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or with respect to one or more other processes described elsewhere herein.

[0142] In a first aspect, the one or more uplink power control parameters include at least one of a target received power, a path loss compensation factor, a closed loop index, or a path loss reference signal parameter.

[0143] In a second aspect, either alone or in combination with the first aspect, a pathloss reference signal parameter indicates a reference signal to be measured for pathloss estimation and power control estimation.

[0144] In a third aspect, alone or in combination with one or more of the first and second aspects, the one or more uplink power control parameters are not associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and transmitting an indication of the one or more uplink power control parameters includes transmitting an indication of the one or more uplink power control parameters in an SRS resource set information element associated with an SRS transmission.

[0145] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the one or more uplink power control parameters are not associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and transmitting an indication of the one or more uplink power control parameters comprises transmitting an indication of the one or more uplink power control parameters in a parameter set identifier field indicating a parameter set identifier associated with the one or more uplink power control parameters, the parameter set identifier being associated with an SRS resource set associated with the SRS transmission.

[0146] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the one or more uplink power control parameters are not associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and transmitting an indication of the one or more uplink power control parameters comprises transmitting an indication of the one or more uplink power control parameters in an SRS resource information element associated with an SRS transmission.

[0147] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the one or more uplink power control parameters are not associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and transmitting an indication of the one or more uplink power control parameters comprises transmitting an indication of the one or more uplink power control parameters in a parameter set identifier field indicating a parameter set identifier associated with the one or more uplink power control parameters, wherein the parameter set identifier is associated with an SRS resource associated with the SRS transmission.

[0148] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the process 900 includes transmitting, in a medium access control control element, an indication of the updated one or more uplink power control parameters, the updated one or more uplink power control parameters being associated with an SRS resource associated with the SRS transmission.

[0149] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the one or more uplink power control parameters are associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and transmitting an indication of the one or more uplink power control parameters comprises transmitting an indication of the TCI state.

[0150] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and transmitting an indication of the one or more uplink power control parameters comprises transmitting an indication of the one or more uplink power control parameters in at least one of an SRS resource information element associated with the SRS transmission or an SRS resource set information element associated with the SRS transmission.

[0151] In a tenth aspect, either alone or in combination with one or more of the first through ninth aspects, the process 900 includes receiving from the UE an indication of a capability to support selectively using other uplink power control parameters not associated with the TCI state or one or more uplink power control parameters associated with the TCI state, and transmitting an indication of the one or more uplink power control parameters to the UE based at least in part on the capability.

[0152] In an eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, at least one of the SRS resources associated with an SRS transmission or the SRS resource set in which the SRS resource is included shares a TCI state with at least one of the uplink control channel or the uplink shared channel.

[0153] In a twelfth aspect, either alone or in combination with one or more of the first to eleventh aspects, an SRS resource associated with an SRS transmission, or at least one of the SRS resource sets in which the SRS resource is included, is associated with another TCI state different from a TCI state associated with at least one of the uplink control channel or the uplink shared channel.

[0154] 9 illustrates example blocks of process 900, in some aspects process 900 may include additional, fewer, different, or differently arranged blocks compared to the blocks illustrated in FIG 9. Additionally or alternatively, two or more of the blocks of process 900 may be performed in parallel.

[0155] FIG. 10 is a diagram of an example apparatus 1000 for wireless communication. The apparatus 1000 may be a UE, or a UE may include the apparatus 1000. In some aspects, the apparatus 1000 includes a receiving component 1002 and a transmitting component 1004, which may be in communication with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 1000 may communicate with another apparatus 1006 (such as a UE, a base station, or another wireless communication device) using the receiving component 1002 and the transmitting component 1004. As further shown, the apparatus 1000 may include a communications manager 140. The communications manager 140 may include a determining component 1008, among other examples.

[0156] In some aspects, the apparatus 1000 may be configured to perform one or more operations described herein with respect to FIGS. 3-7. Additionally or alternatively, the apparatus 1000 may be configured to perform one or more processes described herein, such as process 800 of FIG. 8. In some aspects, the apparatus 1000 and / or one or more components illustrated in FIG. 10 may include one or more components of a UE described with respect to FIG. 2. Additionally or alternatively, one or more components illustrated in FIG. 10 may be implemented within one or more components described with respect to FIG. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

[0157] The receiving component 1002 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1006. The receiving component 1002 may provide the received communications to one or more other components of the device 1000. In some aspects, the receiving component 1002 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and provide the processed signals to one or more other components of the device 1000. In some aspects, the receiving component 1002 may include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller / processor, a memory, or a combination thereof of a UE as described with respect to FIG.

[0158] The transmitting component 1004 may transmit a communication, such as a reference signal, control information, a data communication, or a combination thereof, to the device 1006. In some aspects, one or more other components of the device 1000 may generate a communication and provide the generated communication to the transmitting component 1004 for transmission to the device 1006. In some aspects, the transmitting component 1004 may perform signal processing (such as filtering, amplifying, modulating, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communication and may transmit the processed signal to the device 1006. In some aspects, the transmitting component 1004 may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof, of a UE as described with respect to FIG. 2. In some aspects, the transmitting component 1004 may be collocated with the receiving component 1002 in a transceiver.

[0159] The determining component 1008 may determine one or more uplink power control parameters for the SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel. The transmitting component 1004 may transmit an SRS transmission (e.g., to the device 1006) based at least in part on the one or more uplink power control parameters.

[0160] In some aspects, the receiving component 1002 may receive (e.g., from the apparatus 1006) an indication of updated one or more uplink power control parameters in a medium access control control element, the updated one or more uplink power control parameters being associated with an SRS resource associated with the SRS transmission.

[0161] In some aspects, the determining component 1008 may refrain from determining one or more uplink power control parameters based at least in part on an indication of one or more other uplink power control parameters indicated in the SRS resource information element or in an SRS resource set information element.

[0162] In some aspects, the determining component 1008 may refrain from determining one or more uplink power control parameters based at least in part on an indication of one or more other uplink power control parameters associated with the TCI state.

[0163] In some aspects, the transmitting component 1004 may transmit (e.g., to the device 1006) an indication of a capability to support selectively using other uplink power control parameters not associated with the TCI state or one or more uplink power control parameters associated with the TCI state.

[0164] The number and arrangement of components shown in Figure 10 are provided as an example. In practice, there may be additional, fewer, different, or differently arranged components compared to those shown in Figure 10. Furthermore, two or more components shown in Figure 10 may be implemented within a single component, or a single component shown in Figure 10 may be implemented as multiple distributed components. Additionally or alternatively, a set of components (one or more) shown in Figure 10 may perform one or more functions described as being performed by another set of components shown in Figure 10.

[0165] 11 is a diagram of an example apparatus 1100 for wireless communication. The apparatus 1100 may be a base station, or a base station may include the apparatus 1100. In some aspects, the apparatus 1100 includes a receiving component 1102 and a transmitting component 1104, which may be in communication with one another (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 1100 may communicate with another apparatus 1106 (such as a UE, a base station, or another wireless communication device) using the receiving component 1102 and the transmitting component 1104. As further shown, the apparatus 1100 may include a communications manager 150.

[0166] In some aspects, the apparatus 1100 may be configured to perform one or more operations described herein with respect to FIGS. 4-7. Additionally or alternatively, the apparatus 1100 may be configured to perform one or more processes described herein, such as the process 900 of FIG. 9. In some aspects, the apparatus 1100 and / or one or more components shown in FIG. 11 may include one or more components of a base station described with respect to FIG. 2. Additionally or alternatively, one or more components shown in FIG. 11 may be implemented within one or more components described with respect to FIG. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

[0167] The receiving component 1102 can receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1106. The receiving component 1102 can provide the received communications to one or more other components of the device 1100. In some aspects, the receiving component 1102 can perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) on the received communications and can provide the processed signals to one or more other components of the device 1100. In some aspects, the receiving component 1102 may include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller / processor, a memory, or a combination thereof of a base station as described with respect to FIG.

[0168] The transmitting component 1104 can transmit a communication, such as a reference signal, control information, a data communication, or a combination thereof, to the device 1106. In some aspects, one or more other components of the device 1100 can generate a communication and provide the generated communication to the transmitting component 1104 for transmission to the device 1106. In some aspects, the transmitting component 1104 can perform signal processing (such as filtering, amplifying, modulating, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) on the generated communication and can transmit the processed signal to the device 1106. In some aspects, the transmitting component 1104 may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof, of a base station as described with respect to FIG. 2. In some aspects, the transmitting component 1104 can be collocated with the receiving component 1102 in a transceiver.

[0169] The transmitting component 1104 may transmit (e.g., to the device 1106) an indication of one or more uplink power control parameters for an SRS transmission based at least in part on whether the one or more uplink power control parameters are associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel. The receiving component 1102 may receive (e.g., from the device 1106) an SRS transmission based at least in part on the one or more uplink power control parameters.

[0170] In some aspects, the transmitting component 1104 may transmit (e.g., to the device 1106) an indication of the updated uplink power control parameter(s) in a medium access control control element, the updated uplink power control parameter(s) associated with an SRS resource associated with the SRS transmission.

[0171] In some aspects, the receiving component 1102 may receive an indication of a capability to support selectively using other uplink power control parameters not associated with a TCI state or one or more uplink power control parameters associated with a TCI state from the device 1106. In some aspects, the transmitting component 1104 may transmit an indication of the one or more uplink power control parameters to the device 1106 based at least in part on the capability.

[0172] The number and arrangement of components shown in Figure 11 are provided as an example. In practice, there may be additional, fewer, different, or differently arranged components compared to those shown in Figure 11. Furthermore, two or more components shown in Figure 11 may be implemented within a single component, or a single component shown in Figure 11 may be implemented as multiple distributed components. Additionally or alternatively, a set of components (one or more) shown in Figure 11 may perform one or more functions that are described as being performed by another set of components shown in Figure 11.

[0173] The following provides a summary of several aspects of the disclosure.

[0174] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: determining one or more uplink power control parameters for a sounding reference signal (SRS) transmission based at least in part on whether the one or more uplink power control parameters are associated with a transmission configuration indication (TCI) state associated with at least one of an uplink control channel or an uplink shared channel; and transmitting an SRS transmission based at least in part on the one or more uplink power control parameters.

[0175] Aspect 2: The method of aspect 1, wherein the one or more uplink power control parameters include at least one of a target received power, a path loss compensation factor, a closed loop index, or a path loss reference signal parameter.

[0176] Aspect 3: The method of aspect 2, wherein the path loss reference signal parameter indicates a reference signal to be measured for path loss estimation and power control estimation.

[0177] Aspect 4: The method of one or more of aspects 1-3, wherein the one or more uplink power control parameters are not associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on an SRS resource set associated with an SRS transmission.

[0178] Aspect 5: The method of aspect 4, wherein one or more uplink power control parameters are indicated in a downlink communication in an SRS resource set information element associated with an SRS resource set, or in a parameter set identifier field in downlink communication indicating a parameter set identifier associated with the one or more uplink power control parameters, and the parameter set identifier is associated with the SRS resource set.

[0179] Aspect 6: The method of one or more of aspects 1-5, wherein the one or more uplink power control parameters are not associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on SRS resources associated with an SRS transmission.

[0180] Aspect 7: The method of aspect 6, wherein one or more uplink power control parameters are configured for SRS resources.

[0181] Aspect 8: The method of aspect 6 or 7, wherein one or more uplink power control parameters are configured in an SRS resource set in which the SRS resource is included, and determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on the SRS resource being included in the SRS resource set.

[0182] Aspect 9: The method of one or more of aspects 6 to 8, wherein the one or more uplink power control parameters are indicated in a SRS resource information element associated with an SRS resource in the downlink communication, or in a parameter set identifier field indicating a parameter set identifier associated with the one or more uplink power control parameters in the downlink communication, and the parameter set identifier is associated with the SRS resource.

[0183] Aspect 10: The method of one or more of aspects 1 to 9, further comprising receiving, in a medium access control control element, an indication of updated one or more uplink power control parameters, the updated one or more uplink power control parameters being associated with an SRS resource associated with the SRS transmission.

[0184] Aspect 11: A method according to one or more of aspects 1 to 10, wherein one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on the one or more uplink power control parameters being associated with the TCI state.

[0185] Aspect 12: The method of aspect 11, further comprising refraining from determining one or more uplink power control parameters based at least in part on an indication of one or more other uplink power control parameters indicated in an SRS resource information element or in an SRS resource set information element.

[0186] Aspect 13: The method of one or more of aspects 1 to 12, wherein the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on at least one of an SRS resource associated with the SRS transmission or an SRS resource set in which the SRS resource is included.

[0187] Aspect 14: A method as described in one or more of aspects 11 to 13, further comprising refraining from determining one or more uplink power control parameters based at least in part on an indication of one or more other uplink power control parameters associated with the TCI state.

[0188] Aspect 15: A method according to one or more of aspects 11 to 14, further comprising transmitting an indication of a capability to support selectively using other uplink power control parameters not associated with a TCI state, or one or more uplink power control parameters associated with a TCI state.

[0189] Aspect 16: The method according to one or more of aspects 1 to 15, wherein at least one of an SRS resource associated with an SRS transmission or an SRS resource set in which the SRS resource is included shares a TCI state with at least one of an uplink control channel or an uplink shared channel.

[0190] Aspect 17: The method according to one or more of aspects 1 to 16, wherein at least one of an SRS resource associated with an SRS transmission, or an SRS resource set in which the SRS resource is included, is associated with another TCI state different from a TCI state associated with at least one of an uplink control channel or an uplink shared channel.

[0191] Aspect 18: A method of wireless communication performed by a base station, comprising: transmitting an indication of one or more uplink power control parameters for a sounding reference signal (SRS) transmission based at least in part on whether the one or more uplink power control parameters are associated with a transmission configuration indication (TCI) state associated with at least one of an uplink control channel or an uplink shared channel; and receiving an SRS transmission based at least in part on the one or more uplink power control parameters.

[0192] Aspect 19: The method of aspect 18, wherein the one or more uplink power control parameters include at least one of a target received power, a path loss compensation factor, a closed loop index, or a path loss reference signal parameter.

[0193] Aspect 20: The method of aspect 19, wherein the path loss reference signal parameter indicates a reference signal to be measured for path loss estimation and power control estimation.

[0194] Aspect 21: The method of one or more of aspects 18 to 20, wherein the one or more uplink power control parameters are not associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and transmitting an indication of the one or more uplink power control parameters includes transmitting an indication of the one or more uplink power control parameters in an SRS resource set information element associated with an SRS transmission.

[0195] Aspect 22: The method of one or more of aspects 18 to 21, wherein the one or more uplink power control parameters are not associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and transmitting an indication of the one or more uplink power control parameters includes transmitting an indication of the one or more uplink power control parameters in a parameter set identifier field indicating a parameter set identifier associated with the one or more uplink power control parameters, wherein the parameter set identifier is associated with an SRS resource set associated with an SRS transmission.

[0196] Aspect 23: The method of one or more of aspects 18 to 22, wherein the one or more uplink power control parameters are not associated with a TCI state associated with at least one of the uplink control channel or the uplink shared channel, and transmitting an indication of the one or more uplink power control parameters includes transmitting an indication of the one or more uplink power control parameters in an SRS resource information element associated with an SRS transmission.

[0197] Aspect 24: The method of one or more of aspects 18 to 23, wherein the one or more uplink power control parameters are not associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and transmitting an indication of the one or more uplink power control parameters includes transmitting an indication of the one or more uplink power control parameters in a parameter set identifier field indicating a parameter set identifier associated with the one or more uplink power control parameters, wherein the parameter set identifier is associated with an SRS resource associated with the SRS transmission.

[0198] Aspect 25: The method according to one or more of aspects 18 to 24, further comprising: transmitting, in a medium access control control element, an indication of the updated one or more uplink power control parameters, wherein the updated one or more uplink power control parameters are associated with an SRS resource associated with the SRS transmission.

[0199] Aspect 26: The method of one or more of aspects 18 to 25, wherein one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and transmitting an indication of the one or more uplink power control parameters includes transmitting an indication of the TCI state.

[0200] Aspect 27: The method of one or more of aspects 18 to 26, wherein the one or more uplink power control parameters are associated with a TCI state associated with at least one of an uplink control channel or an uplink shared channel, and transmitting an indication of the one or more uplink power control parameters includes transmitting an indication of the one or more uplink power control parameters in at least one of an SRS resource information element associated with the SRS transmission or an SRS resource set information element associated with the SRS transmission.

[0201] Aspect 28: The method of aspect 27, further comprising: receiving from a user equipment (UE) an indication of a capability to support selectively using other uplink power control parameters not associated with a TCI state or one or more uplink power control parameters associated with the TCI state; and transmitting an indication of the one or more uplink power control parameters to the UE based at least in part on the capability.

[0202] Aspect 29: The method according to one or more of aspects 18 to 28, wherein at least one of an SRS resource associated with an SRS transmission or an SRS resource set in which the SRS resource is included shares a TCI state with at least one of an uplink control channel or an uplink shared channel.

[0203] Aspect 30: The method according to one or more of aspects 18 to 29, wherein at least one of an SRS resource associated with an SRS transmission, or an SRS resource set in which the SRS resource is included, is associated with another TCI state different from a TCI state associated with at least one of an uplink control channel or an uplink shared channel.

[0204] Aspect 31: An apparatus for wireless communication in a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to perform a method according to one or more of aspects 1 to 17.

[0205] Aspect 32: A device for wireless communication, comprising: a memory; and one or more processors coupled to the memory, the one or more processors configured to perform the methods described in one or more of aspects 1 to 17.

[0206] Aspect 33: An apparatus for wireless communication, comprising at least one means for performing the method according to one or more of aspects 1 to 17.

[0207] Aspect 34: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform a method according to one or more of aspects 1-17.

[0208] Aspect 35: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method described in one or more of aspects 1-17.

[0209] Aspect 36: An apparatus for wireless communication in a device, comprising a processor, a memory coupled to the processor, and instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to perform the methods described in one or more of aspects 18-30.

[0210] Aspect 37: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the methods described in one or more of aspects 18 to 30.

[0211] Example 38: An apparatus for wireless communication, comprising at least one means for performing the method according to one or more of examples 18-30.

[0212] Aspect 39: A non-transitory computer-readable medium storing code for wireless communication, the code including instructions executable by a processor to perform the methods described in one or more of aspects 18 to 30.

[0213] Aspect 40: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method described in one or more of aspects 18-30.

[0214] The above disclosure provides illustration and description, but is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the embodiments.

[0215] As used herein, the term "component" shall be broadly construed as hardware and / or a combination of hardware and software. "Software" shall be broadly construed to mean, among other examples, instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. As used herein, a "processor" is implemented in hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein may be implemented in different forms of hardware and / or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and / or methods is not intended to limit aspects. Thus, the operation and behavior of the systems and / or methods are described herein without reference to specific software code, as those skilled in the art will appreciate that software and hardware may be designed to implement the systems and / or methods based at least in part on the description herein.

[0216] As used herein, "meeting a threshold" can refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc., depending on the context.

[0217] Even if certain combinations of features are recited in the claims and / or disclosed herein, these combinations are not intended to limit the disclosure of the various aspects. Many of these features may be combined in ways not specifically recited in the claims and / or disclosed herein. The disclosure of the various aspects includes each dependent claim in combination with any other claim in the claim set. As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. As an example, "at least one of a, b, or c" is intended to include a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination having multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other order of a, b, and c).

[0218] No element, act, or instruction used herein should be construed as critical or essential unless expressly described as such. Also, as used herein, the articles "a" and "an" are intended to include one or more items and may be used interchangeably with "one or more." Additionally, as used herein, the article "the" is intended to include one or more items referred to in relation to the article "the" and may be used interchangeably with "one or more." Additionally, as used herein, the terms "set" and "group" are intended to include one or more items and may be used interchangeably with "one or more." When only one item is intended, the phrase "only one" or similar language is used. Also, as used herein, terms such as "has," "have," and "having" are intended to be open-ended terms that do not limit the elements they modify (e.g., an element that "has" A can also have B). Additionally, the phrase "based on" is intended to mean "based at least in part on," unless expressly stated otherwise. Also, as used herein, the term "or" is intended to be inclusive when used in a sequence and may be used interchangeably with "and / or," unless expressly stated otherwise (e.g., when used in combination with "either" or "only one of").

Claims

1. 1. A method of wireless communication implemented by a user equipment (UE), comprising: determining one or more uplink power control parameters for a Sounding Reference Signal (SRS) transmission based at least in part on whether the one or more uplink power control parameters are associated with a Transmission Configuration Indication (TCI) state associated with at least one of an uplink control channel or an uplink shared channel, wherein determining the one or more uplink power control parameters includes determining the one or more uplink power control parameters based at least in part on SRS resources associated with a TCI state that is different from the TCI state associated with at least one of the uplink control channel or the uplink shared channel; transmitting the SRS transmission based at least in part on the one or more uplink power control parameters; A method comprising:

2. The one or more uplink power control parameters are: Target received power, Path loss compensation coefficient, Closed Loop Index, or Path loss reference signal parameters The method of claim 1 , comprising at least one of:

3. The method of claim 2 , wherein the path loss reference signal parameter indicates a reference signal to be measured for path loss estimation and power control estimation.

4. The method of claim 1, further comprising determining the one or more uplink power control parameters based at least in part on an SRS resource set associated with the SRS transmission.

5. The method of claim 1 , wherein the one or more uplink power control parameters are configured for the SRS resource.

6. 2. The method of claim 1, further comprising: transmitting an indication of a capability to support selectively using other uplink power control parameters not associated with the TCI state or the one or more uplink power control parameters associated with the TCI state.

7. 1. A user equipment (UE) for wireless communications, comprising: means for determining one or more uplink power control parameters for a Sounding Reference Signal (SRS) transmission based at least in part on whether the one or more uplink power control parameters are associated with a Transmission Configuration Indication (TCI) state associated with at least one of an uplink control channel or an uplink shared channel, wherein determining the one or more uplink power control parameters comprises determining the one or more uplink power control parameters based at least in part on SRS resources associated with a TCI state that is different from the TCI state associated with at least one of the uplink control channel or the uplink shared channel; means for transmitting the SRS transmission based at least in part on the one or more uplink power control parameters.

8. The UE of claim 7, further comprising means for performing the method of any one of claims 2 to 6.

9. 1. A method of wireless communication performed by a base station, comprising: transmitting, for a Sounding Reference Signal (SRS) transmission, an indication of one or more uplink power control parameters determined at least in part based on whether the one or more uplink power control parameters are associated with a Transmission Configuration Indication (TCI) state associated with at least one of an uplink control channel or an uplink shared channel, wherein the one or more uplink power control parameters are determined at least in part based on SRS resources associated with a TCI state that is different from the TCI state associated with at least one of the uplink control channel or the uplink shared channel; receiving the SRS transmission based at least in part on the one or more uplink power control parameters; A method comprising:

10. The one or more uplink power control parameters are: Target received power, Path loss compensation coefficient, Closed Loop Index, or Path loss reference signal parameters The method of claim 9 , comprising at least one of:

11. The method of claim 10 , wherein the path loss reference signal parameter indicates a reference signal to be measured for path loss estimation and power control estimation.

12. transmitting the indication of the one or more uplink power control parameters 10. The method of claim 9, comprising transmitting the indication of the one or more uplink power control parameters in an SRS resource set information element associated with the SRS transmission.

13. The method comprises:

10. The method of claim 9, further comprising transmitting, in a medium access control control element, an indication of the updated one or more uplink power control parameters.

14. 1. A base station for wireless communications, comprising: means for transmitting, for a Sounding Reference Signal (SRS) transmission, an indication of one or more uplink power control parameters determined at least in part based on whether the one or more uplink power control parameters are associated with a Transmission Configuration Indication (TCI) state associated with at least one of an uplink control channel or an uplink shared channel, wherein the one or more uplink power control parameters are determined at least in part based on SRS resources associated with a TCI state that is different from the TCI state associated with at least one of the uplink control channel or the uplink shared channel; means for receiving the SRS transmission based at least in part on the one or more uplink power control parameters.

15. The base station of claim 14, further comprising means for performing the method of any one of claims 10 to 13.

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