Sending secondary cell transmissions using transmit power control adjustment values associated with primary cells

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may transmit a primary cell (PCell) uplink transmission to a network node, where the PCell uplink transmission is associated with a transmit power control (TPC) adjustment value. Based at least in part on a carrier handover from a PCell to a secondary cell (SCell), the UE may transmit to the network node an SCell sounding reference signal (SRS) transmission to which the TPC adjustment value associated with the PCell uplink transmission is applied based at least in part on a condition being satisfied. Numerous other aspects are described.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This patent application claims priority to U.S. non-provisional patent application No. 17 / 932,783, filed on September 16, 2022, entitled "TRANSMITTING SECONDARY CELLTRANSMISSIONS USING TRANSMIT POWER CONTROL ADJUSTMENT VALUES ASSOCIATED WITHA PRIMARY CELL," which is hereby expressly incorporated herein by reference. Technical Field

[0002] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for transmitting a secondary cell (SCell) transmission using a transmit power control (TPC) adjustment value associated with a primary cell (PCell). Background Art

[0003] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0004] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as user equipment (UE) or multiple UEs. The UE may communicate with the network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a side link (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0005] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region, and / or global level. New Radio (NR), which may be 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 spectrum efficiency; reducing costs; improving services; utilizing new spectrum; and using orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) (CP-OFDM) on the downlink, 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 to better integrate with other open standards; and supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. Summary of the invention

[0006] In some specific implementations, an apparatus for wireless communication at a user equipment (UE) includes a memory and one or more processors, the one or more processors coupled to the memory and configured to: send a primary cell (PCell) uplink transmission to a network node, wherein the PCell uplink transmission is associated with a transmit power control (TPC) adjustment value; and send an SCell sounding reference signal (SRS) transmission to the network node based at least in part on a carrier switching from the PCell to a secondary cell (Scell), wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied.

[0007] In some specific embodiments, an apparatus for performing wireless communications at a network node includes a memory and one or more processors, the one or more processors being coupled to the memory and configured to: receive a PCell uplink transmission from a UE, wherein the PCell uplink transmission is associated with a TPC adjustment value; and receive an SCell SRS transmission from the UE based at least in part on a carrier switch from a PCell to an SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied.

[0008] In some specific implementations, a method of wireless communication performed by a device of a UE includes: sending a PCell uplink transmission to a network node, wherein the PCell uplink transmission is associated with a TPC adjustment value; and sending an SCell SRS transmission to the network node based at least in part on a carrier switching from a PCell to a SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied.

[0009] In some specific embodiments, a method of wireless communication performed by an apparatus of a network node includes: receiving a PCell uplink transmission from a UE, wherein the PCell uplink transmission is associated with a TPC adjustment value; and receiving an SCell SRS transmission from the UE based at least in part on a carrier switching from a PCell to a SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied.

[0010] In some specific embodiments, a non-transitory computer-readable medium storing an instruction set for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: send a PCell uplink transmission to a network node, wherein the PCell uplink transmission is associated with a TPC adjustment value; and send an SCell SRS transmission to the network node based at least in part on a carrier switch from a PCell to an SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied.

[0011] In some specific embodiments, a non-transitory computer-readable medium storing an instruction set for wireless communication includes one or more instructions that, when executed by one or more processors of a network node, causes the network node to: receive a PCell uplink transmission from a UE, wherein the PCell uplink transmission is associated with a TPC adjustment value; and receive an SCell SRS transmission from the UE based at least in part on a carrier switch from a PCell to an SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied.

[0012] In some specific embodiments, an apparatus for wireless communication includes: a component for sending a PCell uplink transmission to a network node, wherein the PCell uplink transmission is associated with a TPC adjustment value; and a component for sending an SCell SRS transmission to the network node based at least in part on a carrier switching from a PCell to a SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied.

[0013] In some specific embodiments, an apparatus for wireless communication includes: a component for receiving a PCell uplink transmission from a UE, wherein the PCell uplink transmission is associated with a TPC adjustment value; and a component for receiving an SCell SRS transmission from the UE based at least in part on a carrier switching from a PCell to a SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied.

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

[0015] The features and technical advantages of examples according to the present disclosure have been outlined quite broadly above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations of the claims.

[0016] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other non-module component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / shopping devices, medical devices and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The devices incorporating the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers). The various aspects described herein are intended to be practiced in a variety of devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to be able to understand the above-mentioned features of the present disclosure in detail, a more specific description briefly summarized above may be obtained by reference to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0018] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0019] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0020] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0021] Figure 4 is a diagram illustrating an example associated with transmitting a secondary cell (SCell) using a transmit power control (TPC) adjustment value associated with a primary cell (PCell) according to the present disclosure.

[0022] Figures 5 and 6 is a diagram illustrating an example process associated with transmitting an SCell using a TPC adjustment value associated with a PCell according to the present disclosure.

[0023] Figures 7 and 8 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0024] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be construed as being limited to any specific structure or function presented throughout the present disclosure. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. It should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether it is independently or in combination with any other aspect of the disclosure. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method practiced using other structures, functionality, or structure and functionality in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the present invention.

[0025] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description 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 specific application and the design constraints imposed on the overall system.

[0026] Although various aspects may be described herein using terminology generally associated with 5G or new radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or 5G and beyond (e.g., 6G) RATs.

[0027] Figure 11 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). For another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0028] In some examples, the network node 110 is or includes a network node that communicates with the UE 120 via a radio access link, such as an RU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link, such as a CU. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. The network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul, midhaul, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0029] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​the network node 110 and / or a network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 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 radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 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 a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1 In the example shown in , network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. The network node may support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile network node 110 (e.g., a mobile network node).

[0030] In some aspects, the term "base station" or "network node" may refer to a converged base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near-RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions, such as those described herein in conjunction with the network node 110. In some aspects, the term "base station" or "network node" may refer to a plurality of devices configured to perform one or more functions. For example, in some distributed systems, each of a plurality of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeatedly perform at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions 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, but not another base station function. In this way, a single device may include more than one base station.

[0031] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that is capable of relaying transmissions for other UEs 120. Figure 1 In the example shown in , a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communications between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0032] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0033] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless or wired backhaul communication link. In some aspects, the network controller 130 may be, or may include, a CU or a core network device.

[0034] UE 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. UE 120 may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a 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, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0035] Some UEs 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that may communicate with a network node, 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. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0036] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, air interface, etc. Frequency may be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0037] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using network node 110 as an intermediary to communicate with each other) using one or more side link channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0038] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. 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 as frequency range designations FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be understood that, although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the “below 6 GHz” band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the “millimeter wave” band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as the “millimeter wave” band by the International Telecommunication Union (ITU).

[0039] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125 GHz–24.25 GHz). Bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, thus effectively extending the characteristics of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz-71 GHz), FR4 (52.6 GHz-114.25 GHz), and FR5 (114.25 GHz-300 GHz). Each of these higher frequency bands falls within the EHF band.

[0040] Considering the above examples, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. Additionally, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in 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.

[0041] In some aspects, a UE (e.g., UE 120) may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may send a primary cell (PCell) uplink transmission to a network node, wherein the PCell uplink transmission is associated with a transmit power control (TPC) adjustment value; and send a SCell sounding reference signal (SRS) transmission to the network node based at least in part on a carrier switch from the PCell to the SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0042] In some aspects, a network node (e.g., network node 110) may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may receive a PCell uplink transmission from a UE, wherein the PCell uplink transmission is associated with a TPC adjustment value; and receive a SCell SRS transmission from the UE based at least in part on a carrier switch from a PCell to a SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0043] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0044] Figure 2 2 is a diagram illustrating an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0045] At the network node 110, a transmit processor 220 may receive data intended for a UE 120 (or a set of UEs 120) from a data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and may provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., pre-coding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or up-convert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a to 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a to 234t).

[0046] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding 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 modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the 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 things. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0047] 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 network node 110 via the communication unit 294.

[0048] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included 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, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (in a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or may be coupled to one or more transmit and / or receive components (such as, Figure 2 One or more antenna elements of one or more components in.

[0049] On the uplink, at 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 pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform the functions described herein (eg, reference Figures 4 to 8 ) any aspects of any of the methods described herein.

[0050] At the network node 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 (shown as DEMOD) of the modem 232), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and provide the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink communication and / or uplink communication. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 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 operations described herein (e.g., with reference to Figures 4 to 8 ) any aspects of any of the methods described herein.

[0051] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the UE 120 may perform one or more techniques associated with sending the SCell using the TPC adjustment value associated with the PCell. For example, the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Figure 5 The process of 500 Figure 6 600 and / or other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly executed, or executed after compilation, conversion and / or interpretation), may cause one or more processors, UE 120 and / or network node 110 to perform or direct, for example, Figure 5 The process of 500 Figure 6 The process 600 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0052] In some aspects, a UE (e.g., UE 120) includes: a component for sending a PCell uplink transmission to a network node, wherein the PCell uplink transmission is associated with a TPC adjustment value; and / or a component for sending an SCell SRS transmission to a network node based at least in part on a carrier switch from a PCell to an SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied. In some aspects, the components for the apparatus to perform the operations described herein may include, for example, one or more of the communication manager 140, the antenna 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.

[0053] In some aspects, a network node (e.g., network node 110) includes: a component for receiving a PCell uplink transmission from a UE, wherein the PCell uplink transmission is associated with a TPC adjustment value; and / or a component for receiving a SCell SRS transmission from a UE based at least in part on a carrier switch from a PCell to a SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied. In some aspects, the components for an apparatus to perform operations described herein may include, for example, one or more of the following: a communication manager 150, a transmit processor 220, a TX MIMO processor 230, a modem 232, an antenna 234, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246.

[0054] Although Figure 2 The blocks in the 2000 and 2010 are illustrated as distinct components, but the functionality described above for these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described for the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0055] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0056] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or parts in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated or decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) that perform base station functionality can be implemented as an aggregated base station (also called an independent base station or a monolithic base station) or a decomposed base station. "Network entity" or "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0057] An aggregated base station (e.g., an aggregated network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, the CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other network nodes. The DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), and the like.

[0058] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a decomposed base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A decomposed base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Individual units of a decomposed base station may be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0059] Figure 3 3 is a diagram illustrating an example disaggregated base station architecture 300 according to the present disclosure. The disaggregated base station architecture 300 may include a CU 310 that may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more disaggregated control units, such as a near-RT RIC 325 via an E2 link, or a non-RTRIC 315 associated with a service management and orchestration (SMO) framework 305, or both. The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via an F1 interface. Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0060] Each of the units (including CU 310, DU 330, RU 340) and the near-RT RIC 325, non-RT RIC 315, and SMO framework 305 may include or be coupled to one or more interfaces, the one or more interfaces being configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit may be configured to communicate with one or more of the other units via a transmission medium. In some examples, each of the units may include a wired interface and a wireless interface, the wired interface being configured to receive signals or send signals to one or more of the other units via a wired transmission medium, the wireless interface being configured to receive signals or send signals to one or more of the other units via a wired transmission medium, the wireless interface being configured to receive signals or send signals to one or more of the other units via a wireless transmission medium, or both.

[0061] In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some specific implementations, the CU 310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0062] Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a MAC layer, and one or more high physical (PHY) layers, at least in part, according to a functional partition such as that defined by 3GPP. In some aspects, the one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc. In some aspects, the DU 330 may further host one or more low PHY layers, such as one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming or physical random access channel (PRACH) extraction and filtering, etc. Each layer (which may also be referred to as a module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0063] Each RU 340 may implement lower layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions or low PHY layer functions such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc. based on functional splitting (e.g., functional splitting defined by 3GPP) (such as lower layer functional splitting). In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0064] The SMO framework 305 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RTRIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0065] The non-RT RIC 315 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or communicate with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0066] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0067] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0068] For SRS, the UE may equally split the serving cell across the configured antenna ports for SRS Carrier Active uplink bandwidth part (BWP) The transmission power on The linear value of When UE uses the index The SRS power control adjustment state is based at least in part on the serving cell Carrier Active uplink BWP When sending SRS according to the configuration of SRS resource set (SRS-ResourceSet) on the UE, the UE can send SRS on the occasion SRS transmission power in Determined as

[0069]

[0070] (in dBm), where When SRS is sent Service Cell The carrier The maximum output power configured for the UE, By service area Carrier Active uplink BWP The p0 is provided, and the SRS resource set Provided by SRS ResourceSet and SRS ResourceSet Identifier (SRS-ResourceSetId), Service area Carrier Activities of UL BWP SRS transmission on The number of resource blocks represents the SRS bandwidth, and is a subcarrier spacing (SCS) configuration, and By service area and SRS resource set Carrier Active uplink BWP The α (alpha) parameter provides, The UE uses the serving cell and SRS resource set Reference signal (RS) resource index of the active downlink BWP Calculate the downlink path loss estimate (in dB). In addition, , wherein if the SRS power control adjustment state (srs-PowerControlAdjustmentStates) parameter indicates the same power control adjustment state for SRS transmission and PUSCH transmission, then is the current physical uplink shared channel (PUSCH) power control adjustment state. Here, It is the SRS power control adjustment state or transmit power control (TPC) adjustment. Carrier Active uplink BWP has The corresponding SRS power control adjustment state Value or When the configuration of the value is provided by a higher layer, In other words, Based at least in part on a change in serving cell or BWP.

[0071] When a UE transmits an SRS on a secondary cell (SCell) using a secondary component carrier (SCC) for SRS carrier switching (SRS-CS) (e.g., when the UE switches from a primary cell (PCell) to an SCell), the TPC adjustment value may be reset after SCell activation (e.g., ). Therefore, the UE may transmit the SRS on the SCell at a relatively high transmit power compared to when the SRS is transmitted on the PCell. The relatively high transmit power of the SRS transmission on the SCell may unnecessarily consume additional resources at the UE. For example, the UE may transmit at a relatively high transmit power on the SCell, which may not be necessary, thereby wasting resources at the UE. The relatively high power of the SRS transmission on the SCell may waste battery power at the UE. In addition, the relatively high transmit power may cause interference between the UE and other UEs.

[0072] For example, the transmit power associated with a PCell SRS transmission with a TPC adjustment of -13 dBm may be approximately -25 dBm, while that associated with a PCell SRS transmission with a TPC adjustment of 0 dBm (e.g., The transmit power associated with the TPC adjustment for SCell SRS transmission may be approximately -8 dBm. Due to SRS-CS, the UE may reset the TPC adjustment from -13 dBm to 0 dBm. The transmit power of approximately -8 dBm for SCell SRS transmission may be significantly greater than the transmit power of approximately -25 dBm for PCell SRS transmission, which may be based at least in part on resetting the TPC adjustment to 0 dBm after switching from PCell to SCell. In addition, power control values ​​other than the TPC adjustment may not change due to SRS-CS. For example, both PCell and SCell may be associated with the same SRS bandwidth (e.g., ), the same path loss (e.g., ), etc., such that the relatively high power of SRS transmissions on the SCell may be primarily attributed to the TPC being reset to 0 dBm, which may occur after SCell activation / addition. The relatively high power of SRS transmissions on the SCell may be based at least in part on the TPC for PCell SRS transmissions being adjusted to a negative value (e.g., -13 dBm).

[0073] In various aspects of the techniques and apparatus described herein, a UE may send a PCell uplink transmission to a network node. The PCell uplink transmission may be a PCell SRS transmission or a PCell PUSCH transmission. The PCell uplink transmission may be associated with a TPC adjustment value. The UE may send an SCell SRS transmission to a network node based at least in part on a carrier switching (e.g., an SRS carrier switching). Based at least in part on a condition being satisfied, the UE may apply a TPC adjustment value associated with the PCell uplink transmission to the SCell SRS transmission. In some aspects, by applying the TPC adjustment value associated with the PCell uplink transmission to the SCell SRS transmission instead of resetting the TPC adjustment value (e.g., setting the TPC adjustment value to zero) before the SCell SRS transmission, the UE may be able to perform the SCell SRS transmission at a lower transmit power, which may save battery power at the UE and avoid interference experienced by other UEs due to a higher transmit power associated with the UE. Additionally, by applying the TPC adjustment value associated with the PCell uplink transmission to the SCell SRS transmission, the UE may not transmit the SCell SRS transmission at a higher transmit power than necessary, thereby saving resources at the UE.

[0074] Figure 4 4 is a diagram illustrating an example 400 associated with transmitting an SCell using a TPC adjustment value associated with a PCell according to the present disclosure. Figure 4 As shown, example 400 includes communications between a UE (eg, UE 120) and a network node (eg, network node 110). In some aspects, the UE and the network node may be included in a wireless network (such as wireless network 100).

[0075] As shown in reference numeral 402, the UE may send a PCell uplink transmission to the network node. The PCell uplink transmission may be a PCell SRS transmission or a PCell PUSCH transmission. The PCell uplink transmission may be associated with a TPC adjustment value. In other words, the UE may apply the TPC adjustment value to the PCell uplink transmission. The TPC adjustment value may be a TPC command factor.

[0076] In some aspects, the UE may perform a carrier switch from a PCell to a SCell. The PCell may be associated with a primary component carrier, and the SCell may be associated with a secondary component carrier. The carrier switch from the PCell to the SCell may involve SCell activation / addition. In some cases, the carrier switch may be an SRS carrier switch.

[0077] As shown by reference numeral 404, the UE may send a SCell SRS transmission to a network node based at least in part on a carrier switch from a PCell to a SCell. The UE may apply a TPC adjustment value associated with a PCell uplink transmission to the SCell SRS transmission. In other words, the UE may apply the same TPC adjustment value applied to the PCell uplink transmission to the SCell SRS transmission. Contrary to resetting the TPC adjustment value to zero for the SCell SRS transmission, the UE may apply the same TPC adjustment value. In other words, the UE may apply the same TPC adjustment value applied to the PCell uplink transmission to the SCell SRS transmission, rather than applying a TPC adjustment value of zero to the SCell SRS transmission.

[0078] In some aspects, based at least in part on a condition being satisfied, the UE may apply a TPC adjustment value to the SCell SRS transmission. The condition may be satisfied based at least in part on a first value (A) being less than a second value (B), and based at least in part on a difference between the first value and the second value satisfying a threshold (X). The first value may correspond to an uplink transmit power (in dBm) of the PCell uplink transmission after incorporating the TPC adjustment value. The second value may correspond to an uplink transmit power of the SCell SRS transmission after incorporating a TPC adjustment value of zero. In other words, when A is less than B and the absolute value of A minus B is greater than X, the TPS adjustment value of the PCell (e.g., ) may be applied to SCell SRS transmissions instead of a TPS adjustment value of zero. Otherwise, a TPS adjustment value of zero (e.g., =0) may be applied to SCell SRS transmission. In other words, when A is not less than B and / or the absolute value of A minus B is not greater than X, a TPS adjustment value of zero may be applied to SCell SRS transmission.

[0079] In some aspects, the condition may be satisfied based at least in part on the network node not configuring downlink control information (DCI) format 2_3 in the RRC reconfiguration message. In some aspects, the condition may be satisfied based at least in part on the UE indicating in the UE capability indication that the UE does not support DCI format 2_3. When the network does not configure DCI format 2_3, or when the UE cannot support DCI format 2_3, the UE may apply the TPC adjustment value to the SCell SRS transmission because DCI format 2_3 may otherwise indicate the TPC adjustment value to be applied to SCells.

[0080] As shown by reference numeral 406, the UE may receive an indication of a TPC adjustment value for the SCell from the network node. The UE may begin using the TPC adjustment value for the SCell, and the UE may no longer use the TPC adjustment value associated with the PCell uplink transmission. In other words, based at least in part on receiving the indication of the TPC adjustment value for the SCell from the network node, the TPC adjustment value associated with the PCell uplink transmission is no longer applied to the SCell. The UE may receive an indication of the TPC adjustment value for the SCell via DCI format 2_3 or via message 2 TPC associated with a random access channel (RACH) process. Based at least in part on the network node configuring DCI format 2_3 and the UE being able to support DCI format 2_3, the UE may receive an indication of the TPC adjustment value for the SCell via DCI format 2_3. In some cases, the UE may receive an indication of the TPC adjustment value for the SCell via another DCI format (e.g., a DCI format other than DCI format 2_3).

[0081] In some aspects, when the condition is met, the UE may apply the same TPC adjustment value applied to the PCell to the SCell for SCell SRS transmission. The UE may apply the same TPC adjustment value (e.g., the TPC adjustment value associated with the PCell) until the UE receives an indication of the TPC adjustment value to be applied to the SCell. In other words, the UE may apply the same TPC adjustment value until the UE receives an indication of a TPC adjustment value specifically for the SCell. The UE may receive the indication from the network node via DCI format 2_3 or message 2 TPC associated with the RACH procedure.

[0082] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 The examples described are different.

[0083] Figure 5 is a diagram illustrating an example process 500 performed, for example, by a UE according to the present disclosure. Example process 500 is an example in which a UE (eg, UE 120) performs operations associated with transmitting an SCell transmission using a TPC adjustment value associated with a PCell.

[0084] like Figure 5 As shown, in some aspects, process 500 may include: sending a PCell uplink transmission to a network node, wherein the PCell uplink transmission is associated with a TPC adjustment value (block 510). For example, a UE (eg, using Figure 7The transmitting component 704 depicted in FIG. 1 may transmit a PCell uplink transmission to a network node, wherein the PCell uplink transmission is associated with a TPC adjustment value, such as in conjunction with Figure 4 as described.

[0085] like Figure 5 As further shown in FIG. 5 , in some aspects, process 500 may include: sending a SCell SRS transmission to a network node based at least in part on a carrier switch from a PCell to a SCell, wherein a TPC adjustment value associated with a PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied (block 520). For example, a UE (e.g., using Figure 7 The transmitting component 704 depicted in FIG. 1 may transmit an SCell SRS transmission to a network node based at least in part on a carrier switch from a PCell to a SCell, wherein a TPC adjustment value associated with a PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied, such as in conjunction with Figure 4 as described.

[0086] Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0087] In a first aspect, the condition is satisfied at least in part based on: a first value is less than a second value; and a difference between the first value and the second value satisfies a threshold, wherein the first value corresponds to an uplink transmit power of a PCell uplink transmission after incorporating a TPC adjustment value, and the second value corresponds to an uplink transmit power of a SCellSRS transmission after incorporating a TPC adjustment value of zero.

[0088] In a second aspect, alone or in combination with the first aspect, the TPC adjustment value associated with the PCell uplink transmission and applied to the SCell SRS transmission is a non-zero value.

[0089] In a third aspect, alone or in combination with one or more of the first and second aspects, the PCell uplink transmission is a PCell SRS transmission.

[0090] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the PCell uplink transmission is a PCell PUSCH transmission.

[0091] like Figure 5As shown, in the fifth aspect, alone or in combination with one or more of the first to fourth aspects, process 500 includes: receiving an indication of a TPC adjustment value for the SCell from a network node, wherein at least in part based on receiving the indication of the TPC adjustment value for the SCell from the network node, the TPC adjustment value associated with the PCell uplink transmission is no longer applied to the SCell (box 530).

[0092] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, an indication of a TPC adjustment value for the SCell is received via DCI format 2_3.

[0093] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the indication of the TPC adjustment value for the SCell is received via a message 2TPC associated with a RACH procedure.

[0094] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the condition is satisfied based at least in part on the network node not configuring DCI format 2_3 in the RRC reconfiguration message.

[0095] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the condition is satisfied at least in part based on the UE indicating in a UE capability indication that the UE does not support DCI format 2_3.

[0096] although Figure 5 Example blocks of process 500 are shown, but in some aspects, process 500 may include Figure 5 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted. Additionally or alternatively, two or more of the blocks of process 500 may be performed in parallel.

[0097] Figure 6 is a diagram illustrating an example process 600 performed, for example, by a network node in accordance with the present disclosure. The example process 600 is an example in which a network node (eg, the network node 110) performs operations associated with transmitting an SCell using a TPC adjustment value associated with a PCell.

[0098] like Figure 6 As shown, in some aspects, process 600 may include: receiving a PCell uplink transmission from a UE, wherein the PCell uplink transmission is associated with a TPC adjustment value (block 610). For example, a network node (eg, using Figure 8 The receiving component 802 depicted in FIG. 8 may receive a PCell uplink transmission from a UE, wherein the PCell uplink transmission is associated with a TPC adjustment value, such as in conjunction with Figure 4 as described.

[0099] like Figure 6 As further shown in FIG. 6 , in some aspects, process 600 may include: receiving an SCell SRS transmission from a UE based at least in part on a carrier switch from a PCell to an SCell, wherein a TPC adjustment value associated with a PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied (block 620). For example, a network node (e.g., using Figure 8 The receiving component 802 depicted in FIG. 1 may receive a SCell SRS transmission from a UE based at least in part on a carrier switch from a PCell to a SCell, wherein a TPC adjustment value associated with a PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied, such as in conjunction with Figure 4 as described.

[0100] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0101] In a first aspect, the condition is satisfied at least in part based on: a first value is less than a second value; and a difference between the first value and the second value satisfies a threshold, wherein the first value corresponds to an uplink transmit power of a PCell uplink transmission after incorporating a TPC adjustment value, and the second value corresponds to an uplink transmit power of a SCellSRS transmission after incorporating a TPC adjustment value of zero.

[0102] In a second aspect, alone or in combination with the first aspect, the TPC adjustment value associated with the PCell uplink transmission and applied to the SCell SRS transmission is a non-zero value.

[0103] In a third aspect, alone or in combination with one or more of the first and second aspects, the PCell uplink transmission is a PCell SRS transmission.

[0104] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the PCell uplink transmission is a PCell PUSCH transmission.

[0105] like Figure 6As further shown in, in a fifth aspect, alone or in combination with one or more of the first to third aspects, process 600 includes: sending an indication of a TPC adjustment value for the SCell to the UE, wherein at least in part based on receiving the indication of the TPC adjustment value for the SCell from the network node, the TPC adjustment value associated with the PCell uplink transmission is no longer applied to the SCell (box 630).

[0106] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, an indication of a TPC adjustment value for the SCell is received via DCI format 2_3.

[0107] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the indication of the TPC adjustment value for the SCell is received via a message 2TPC associated with a RACH procedure.

[0108] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the condition is satisfied based at least in part on the network node not configuring DCI format 2_3 in the RRC reconfiguration message.

[0109] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the condition is satisfied at least in part based on the UE indicating in a UE capability indication that the UE does not support DCI format 2_3.

[0110] although Figure 6 Example blocks of process 600 are shown, but in some aspects, process 600 may include Figure 6 The blocks depicted may be additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted. Additionally or alternatively, two or more of the blocks of process 600 may be performed in parallel.

[0111] Figure 7 700 for wireless communication according to the present disclosure. The apparatus 700 may be a UE, or the UE may include the apparatus 700. In some aspects, the apparatus 700 includes a receiving component 702 and a transmitting component 704, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 700 may communicate with another apparatus 706 (such as a UE, a base station, or another wireless communication device) using the receiving component 702 and the transmitting component 704.

[0112] In some aspects, the apparatus 700 may be configured to perform Figure 4Additionally or alternatively, the apparatus 700 may be configured to perform one or more processes described herein, such as Figure 5 The process 500. In some aspects, Figure 7 The device 700 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, Figure 7 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the component set 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 codes stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0113] The receiving component 702 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 706. The receiving component 702 may provide the received communications to one or more other components of the device 700. In some aspects, the receiving component 702 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to the one or more other components of the device 700. In some aspects, the receiving component 702 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0114] The transmitting component 704 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 706. In some aspects, one or more other components of the device 700 may generate communications and may provide the generated communications to the transmitting component 704 for transmission to the device 706. In some aspects, the transmitting component 704 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 706. In some aspects, the transmitting component 704 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 704 can be co-located with the receive component 702 in a transceiver.

[0115] The transmitting component 704 may transmit a PCell uplink transmission to the network node, wherein the PCell uplink transmission is associated with a TPC adjustment value. The transmitting component 704 may transmit a SCell SRS transmission to the network node based at least in part on a carrier switch from the PCell to the SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied. The receiving component 702 may receive an indication of a TPC adjustment value for the SCell from the network node, wherein the TPC adjustment value associated with the PCell uplink transmission is no longer applied to the SCell based at least in part on receiving an indication of a TPC adjustment value for the SCell from the network node.

[0116] Figure 7 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 7 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 7 Two or more components shown may be implemented in a single component, or Figure 7 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 7 The assembly (one or more components) of the components shown may be described as being executable by Figure 7 Another collection of components shown performs one or more functions.

[0117] Figure 8 800 for wireless communication according to the present disclosure. Apparatus 800 may be a network node, or a network node may include apparatus 800. In some aspects, apparatus 800 includes a receiving component 802 and a transmitting component 804, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 800 may communicate with another apparatus 806 (such as a UE, a base station, or another wireless communication device) using receiving component 802 and transmitting component 804.

[0118] In some aspects, the apparatus 800 may be configured to perform Figure 4 Additionally or alternatively, the apparatus 800 may be configured to perform one or more processes described herein, such as Figure 6 The process 600. In some aspects, Figure 8 The device 800 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, Figure 8 One or more of the components shown may be combined with Figure 2Additionally or alternatively, one or more components in the component set 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 codes stored in a non-transitory computer-readable medium and may be executed by a controller or processor to perform the function or operation of the component.

[0119] The receiving component 802 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 806. The receiving component 802 may provide the received communications to one or more other components of the device 800. In some aspects, the receiving component 802 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to the one or more other components of the device 800. In some aspects, the receiving component 802 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof, of the described network nodes.

[0120] The transmitting component 804 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 806. In some aspects, one or more other components of the device 800 may generate communications and may provide the generated communications to the transmitting component 804 for transmission to the device 806. In some aspects, the transmitting component 804 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 806. In some aspects, the transmitting component 804 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described network nodes. In some aspects, the transmit component 804 can be co-located with the receive component 802 in a transceiver.

[0121] The receiving component 802 may receive a PCell uplink transmission from the UE, wherein the PCell uplink transmission is associated with a TPC adjustment value. The receiving component 802 may receive a SCell SRS transmission from the UE based at least in part on a carrier switch from the PCell to the SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied. The transmitting component 804 may send an indication of a TPC adjustment value for the SCell to the UE, wherein the TPC adjustment value associated with the PCell uplink transmission is no longer applied to the SCell based at least in part on receiving an indication of a TPC adjustment value for the SCell from the network node.

[0122] Figure 8 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 8 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 8 Two or more components shown may be implemented in a single component, or Figure 8 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 8 The assembly (one or more components) of the components shown may be described as being executable by Figure 8 Another collection of components shown performs one or more functions.

[0123] The following provides an overview of some aspects of the disclosure:

[0124] Aspect 1: A method of wireless communication performed by a device of a user equipment (UE), the method comprising: sending a primary cell (PCell) uplink transmission to a network node, wherein the PCell uplink transmission is associated with a transmit power control (TPC) adjustment value; and sending an SCell sounding reference signal (SRS) transmission to the network node based at least in part on a carrier switching from the PCell to the SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied.

[0125] Aspect 2: A method according to Aspect 1, wherein the condition is satisfied at least in part based on: a first value is less than a second value; and a difference between the first value and the second value satisfies a threshold, wherein the first value corresponds to the uplink transmit power of the PCell uplink transmission after incorporating the TPC adjustment value, and the second value corresponds to the uplink transmit power of the SCell SRS transmission after incorporating a TPC adjustment value of zero.

[0126] Aspect 3: The method according to aspect 2, wherein the TPC adjustment value associated with the PCell uplink transmission and applied to the SCell SRS transmission is a non-zero value.

[0127] Aspect 4: The method according to any one of aspects 1 to 3, wherein the PCell uplink transmission is a PCell SRS transmission.

[0128] Aspect 5: The method according to any one of aspects 1 to 4, wherein the PCell uplink transmission is a PCell physical uplink shared channel transmission.

[0129] Aspect 6: According to the method described in any one of Aspects 1 to 5, the method further includes: receiving an indication of a TPC adjustment value for the SCell from the network node, wherein at least in part based on receiving the indication of the TPC adjustment value for the SCell from the network node, the TPC adjustment value associated with the PCell uplink transmission is no longer applied to the SCell.

[0130] Aspect 7: A method according to Aspect 6, wherein the indication of the TPC adjustment value for the SCell is received via downlink control information format 2_3.

[0131] Aspect 8: The method according to aspect 6, wherein the indication of the TPC adjustment value for the SCell is received via a Message 2 TPC associated with a random access channel procedure.

[0132] Aspect 9: A method according to any one of Aspects 1 to 8, wherein the condition is satisfied at least in part based on the network node not configuring downlink control information format 2_3 in a radio resource control reconfiguration message.

[0133] Aspect 10: A method according to any one of Aspects 1 to 9, wherein the condition is met at least in part based on the UE indicating in a UE capability indication that the UE does not support downlink control information format 2_3.

[0134] Aspect 11: A method of wireless communication performed by an apparatus of a network node, the method comprising: receiving a primary cell (PCell) uplink transmission from a user equipment (UE), wherein the PCell uplink transmission is associated with a transmit power control (TPC) adjustment value; and receiving a SCell sounding reference signal (SRS) transmission from the UE based at least in part on a carrier switching from the PCell to the SCell, wherein the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission based at least in part on a condition being satisfied.

[0135] Aspect 12: A method according to Aspect 11, wherein the condition is satisfied at least in part based on: a first value is less than a second value; and a difference between the first value and the second value satisfies a threshold, wherein the first value corresponds to the uplink transmit power of the PCell uplink transmission after incorporating the TPC adjustment value, and the second value corresponds to the uplink transmit power of the SCell SRS transmission after incorporating a TPC adjustment value of zero.

[0136] Aspect 13: The method according to aspect 12, wherein the TPC adjustment value associated with the PCell uplink transmission and applied to the SCell SRS transmission is a non-zero value.

[0137] Aspect 14: The method according to any one of aspects 11 to 13, wherein the PCell uplink transmission is a PCell SRS transmission.

[0138] Aspect 15: The method according to any one of aspects 11 to 14, wherein the PCell uplink transmission is a PCell physical uplink shared channel transmission.

[0139] Aspect 16: According to the method described in any one of Aspects 11 to 15, the method further includes: sending an indication of a TPC adjustment value for the SCell to the UE, wherein at least in part based on receiving the indication of the TPC adjustment value for the SCell from the network node, the TPC adjustment value associated with the PCell uplink transmission is no longer applied to the SCell.

[0140] Aspect 17: A method according to Aspect 17, wherein the indication of the TPC adjustment value for the SCell is received via downlink control information format 2_3.

[0141] Aspect 18: The method according to aspect 17, wherein the indication of the TPC adjustment value for the SCell is received via a Message 2 TPC associated with a random access channel procedure.

[0142] Aspect 19: A method according to any one of Aspects 11 to 18, wherein the condition is satisfied at least in part based on the network node not configuring downlink control information format 2_3 in a radio resource control reconfiguration message.

[0143] Aspect 20: A method according to any one of Aspects 11 to 19, wherein the condition is met at least in part based on the UE indicating in a UE capability indication that the UE does not support downlink control information format 2_3.

[0144] Aspect 21: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 10.

[0145] Aspect 22: A device for wireless communication, the device comprising: a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 1 to 10.

[0146] Aspect 23: An apparatus for wireless communication, the apparatus comprising at least one component configured to perform the method according to one or more of aspects 1 to 10.

[0147] Aspect 24: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 10.

[0148] Aspect 25: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 10.

[0149] Aspect 26: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 11 to 20.

[0150] Aspect 27: A device for wireless communication, the device comprising: a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 11 to 20.

[0151] Aspect 28: An apparatus for wireless communication, the apparatus comprising at least one component configured to perform the method according to one or more of aspects 11 to 20.

[0152] Aspect 29: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 11 to 20.

[0153] Aspect 30: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 11 to 20.

[0154] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0155] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes and / or functions, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by a combination of hardware and / or hardware and software in different forms. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, there is no reference to a specific software code herein to describe the operation and behavior of the system and / or method, because those skilled in the art will understand that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0156] As used herein, "satisfying a threshold" may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0157] Although specific combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of each aspect. Many of these features can be combined in a manner that is not specifically described in the claims and / or is not disclosed in the specification. The disclosure of each aspect includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (which includes a single member). As an example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, as well as any combination with multiple identical elements (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c and c+c+c, or any other ordering of a, b and c).

[0158] Any element, action or instruction used herein should not be interpreted as key or necessary unless explicitly described as such. In addition, as used herein, the article "one" is intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If only one item is intended to be referred to, the phrase "only one" or similar terms will be used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "an element with" A can also have B). In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless explicitly stated otherwise (eg, if used in conjunction with "either" or "only one of").

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Memory; as well as one or more processors coupled to the memory and configured to: sending a primary cell (PCell) uplink transmission to a network node, wherein the PCell uplink transmission is associated with a transmit power control (TPC) adjustment value; and A SCell sounding reference signal (SRS) transmission is sent to the network node based at least in part on a carrier switch from a PCell to a secondary cell (SCell), wherein based at least in part on a condition being satisfied, the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission.

2. The apparatus of claim 1 , wherein the condition is satisfied based at least in part on: The first value is less than the second value; and The difference between the first value and the second value satisfies a threshold value, The first value corresponds to the uplink transmission power of the PCell uplink transmission after incorporating the TPC adjustment value, and the second value corresponds to the uplink transmission power of the SCell SRS transmission after incorporating a TPC adjustment value of zero. 3 . The apparatus of claim 2 , wherein the TPC adjustment value associated with the PCell uplink transmission and applied to the SCell SRS transmission is a non-zero value. The apparatus of claim 1 , wherein the PCell uplink transmission is a PCell SRS transmission. 5 . The apparatus of claim 1 , wherein the PCell uplink transmission is a PCell physical uplink shared channel transmission.

6. The apparatus of claim 1, wherein the one or more processors are further configured to: An indication of a TPC adjustment value for the SCell is received from the network node, wherein based at least in part on receiving the indication of the TPC adjustment value for the SCell from the network node, the TPC adjustment value associated with the PCell uplink transmission is no longer applied to the SCell.

7. An apparatus according to claim 6, wherein the indication of the TPC adjustment value for the SCell is received via downlink control information format 2_3.

8. The apparatus of claim 6, wherein the indication of the TPC adjustment value for the SCell is received via a Message 2 TPC associated with a random access channel procedure.

9. The apparatus of claim 1 , wherein the condition is satisfied based at least in part on the network node not configuring downlink control information format 2_3 in a radio resource control reconfiguration message.

10. The apparatus of claim 1, wherein the condition is satisfied based at least in part on the UE indicating in a UE capability indication that the UE does not support downlink control information format 2_3.

11. An apparatus for wireless communication at a network node, the apparatus comprising: Memory; as well as one or more processors coupled to the memory and configured to: receiving a primary cell (PCell) uplink transmission from a user equipment (UE), wherein the PCell uplink transmission is associated with a transmit power control (TPC) adjustment value; and A SCell sounding reference signal (SRS) transmission is received from the UE based at least in part on a carrier switch from a PCell to a secondary cell (SCell), wherein based at least in part on a condition being satisfied, the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission.

12. The apparatus of claim 11, wherein the condition is satisfied based at least in part on: The first value is less than the second value; and The difference between the first value and the second value satisfies a threshold value, The first value corresponds to the uplink transmission power of the PCell uplink transmission after incorporating the TPC adjustment value, and the second value corresponds to the uplink transmission power of the SCell SRS transmission after incorporating a TPC adjustment value of zero. The apparatus of claim 11 , wherein the PCell uplink transmission is a PCell SRS transmission.

14. The apparatus of claim 11, wherein the PCell uplink transmission is a PCell physical uplink shared channel transmission.

15. The apparatus of claim 11, wherein the one or more processors are further configured to: An indication of a TPC adjustment value for the SCell is sent to the UE, wherein based at least in part on receiving the indication of the TPC adjustment value for the SCell from the network node, the TPC adjustment value associated with the PCell uplink transmission is no longer applied to the SCell.

16. An apparatus according to claim 15, wherein the indication of the TPC adjustment value for the SCell is received via downlink control information format 2_3.

17. The apparatus of claim 15, wherein the indication of the TPC adjustment value for the SCell is received via a Message 2 TPC associated with a random access channel procedure.

18. The apparatus of claim 11, wherein the condition is satisfied based at least in part on the network node not configuring downlink control information format 2_3 in a radio resource control reconfiguration message.

19. The apparatus of claim 11, wherein the condition is satisfied based at least in part on the UE indicating in a UE capability indication that the UE does not support downlink control information format 2_3.

20. A method of wireless communication performed by a device of a user equipment (UE), the method comprising: sending a primary cell (PCell) uplink transmission to a network node, wherein the PCell uplink transmission is associated with a transmit power control (TPC) adjustment value; as well as A SCell sounding reference signal (SRS) transmission is sent to the network node based at least in part on a carrier switch from a PCell to a secondary cell (SCell), wherein based at least in part on a condition being satisfied, the TPC adjustment value associated with the PCell uplink transmission is applied to the SCell SRS transmission.

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