Methods, apparatuses, and systems for an enhanced maximum power reduction (MPR) and power boost framework for spectrum aggregation techniques

Abstract

Methods, apparatuses, and systems provide an enhanced MPR and power boost framework for spectrum aggregation techniques. In the context of a method, the method includes identifying a set of active cells; determining a duration over which at least one time domain resource for at least one uplink transmission via a subset of the set of active cells is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells; determining at least one MPR based at least in part on the subset; and transmitting the at least one uplink transmission during at least a portion of the duration in accordance with one or more power control parameters that are based at least in part on the at least one MPR.

Description

METHODS, APPARATUSES, AND SYSTEMS FOR AN ENHANCED MAXIMUM POWER REDUCTION (MPR) AND POWER BOOST FRAMEWORK FOR SPECTRUM AGGREGATION TECHNIQUESRELATED APPLICATION

[0001] This application claims priority to US provisional Application No. 63 / 704323 filed October 7, 2024, which is incorporated herein by reference in its entirety.TECHNOLOGICAL FIELD

[0002] The present disclosure relates generally to techniques for maximum power reduction (MPR) and power boosting and, more particularly, to an enhanced MPR and power boost framework for spectrum aggregation techniques.BACKGROUND

[0003] In 5G New Radio, power control procedures are used for maintaining reliable communication within a network. A user equipment (UE) may be configured to support a procedure for uplink power control that includes a combination of open-loop power control and closed-loop power control. Open-loop power control may include support for fractional path-loss compensation in which the UE estimates an uplink path-loss based on downlink measurements and determines a transmit power at the UE accordingly. Closed-loop power control may include support for explicit transmit power-control (TPC) commands provided by the network. In some instances, a UE may be configured to support MPR and / or power boosting to maintain a suitable transmit power for wireless communication with one or more network nodes. In some such instances, the transmit power at the UE is based on the MPR or power boosting. Improvements in how a UE determines to apply MPR or power boosting are needed.BRIEF SUMMARY

[0004] Methods, apparatuses, and systems are disclosed for MPR and power boosting. In this regard, the methods, apparatuses, and systems are configured to support an enhanced MPR and power boost framework for spectrum aggregation techniques so as to provide for improved power control and reliability within a network. By providing for improved power control and reliability, the methods, apparatuses, and systems may provide for reduced latency and improved performance of wireless communications in the network.

[0005] In at least one example embodiment, an apparatus is provided comprising at least one processor and at least one memory including computer program code (e.g., instructions) configured to, with the at least one processor, cause the apparatus at least to identify a set of active cells; determine a duration over which at least one time domain resource for at least one uplink transmission via a subset of the set of active cells is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells; determine at least one maximum power reduction (MPR) based at least in part on the subset; and transmit the at least one uplink transmission during at least a portion of the duration in accordance with one or more power control parameters that are based at least in part on the at least one MPR.

[0006] In at least one example embodiment, the one or more power control parameters comprise at least one of: a power amplifier power backoff power reduction associated with the subset, a maximum power associated with at least one active cell of the subset, a maximum power associated with uplink transmissions at the apparatus, or a power headroom associated with the apparatus.

[0007] In at least one example embodiment, the at least one MPR is based at least in part on the duration.

[0008] In at least one example embodiment, the subset comprises a single active cell of the set of active cells, and wherein the at least one time domain resource is non-overlapping with a respective time domain resource for uplink transmissions via each remaining cell of the set of active cells.

[0009] In at least one example embodiment, the at least one MPR comprises at least a single carrier MPR based at least in part on the subset comprising the single active cell.

[0010] In at least one example embodiment, the subset comprises a plurality of active cells of the set of active cells, and wherein the at least one time domain resource is for a respective uplink transmission via each cell of the subset.

[0011] In at least one example embodiment, the at least one MPR is based at least in part on at least one of the following: one or more resource blocks associated with one or more cells of the subset, a duplexing mode associated with the at least one uplink transmission, a type of carrier aggregation associated with the at least one uplink transmission, at least one bandwidth class associated with the subset, a waveform modulation scheme associated with the at least one uplink transmission, a quantity of cells included in the subset, a power class associated with the apparatus, a power amplifier architecture associated with the apparatus, a transmission diversity capability associated with the apparatus, at least one power boostcapability associated with the apparatus, an uplink duty cycle associated with the apparatus, one or more operating bands associated with the subset, a band combination associated with the subset, or an aggregated bandwidth associated with the subset.

[0012] In at least one example embodiment, the duplexing mode comprises frequency division duplexing or time division duplexing, and wherein the type of carrier aggregation comprises inter-band carrier aggregation, intra-band non-contiguous carrier aggregation, intra-band contiguous carrier aggregation, or dual connectivity.

[0013] In at least one example embodiment, the at least one MPR is based at least in part on the at least one time domain resource comprising a quantity of time domain resources that satisfies a time domain threshold.

[0014] In at least one example embodiment, the at least one MPR is based at least in part on a difference between the at least one MPR and a second MPR satisfying an MPR threshold, wherein the second MPR is associated with a second time domain resource for a second uplink transmission, and wherein the second time domain resource precedes the at least one time domain resource.

[0015] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to receive control information indicative of a time domain threshold or an MPR threshold, wherein the at least one MPR is based at least in part on the time domain threshold or the MPR threshold.

[0016] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: determine at least one transmit power for the at least one uplink transmission based at least in part on the one or more power control parameters; and transmit an indication of the at least one transmit power.

[0017] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to transmit a power headroom report based at least in part on a difference between the at least one MPR and a second MPR, wherein the second MPR is associated with a second time domain resource for a second uplink transmission, and wherein the second time domain resource precedes the at least one time domain resource.

[0018] In at least one example embodiment, transmitting the power headroom report is based at least in part on the difference satisfying a threshold.

[0019] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to transmit anindication of a capability for MPR adaptation, wherein determining the at least one MPR is based at least in part on the capability.

[0020] In at least one example embodiment, the capability is for MPR adaptation with multiple active cells associated with overlapping transmissions or non-overlapping transmissions in the time domain.

[0021] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to determine to enable or disable the MPR adaptation based at least in part on the duration, wherein the at least one MPR is based at least in part on the determination to enable or disable the MPR adaptation.

[0022] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to receive control information indicating, to the apparatus, to enable or disable the MPR adaptation, wherein determining to enable or disable the MPR adaptation is in accordance with the control information.

[0023] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to identify a lack of a capability to maintain power boosting over at least the portion of the duration; and determine to omit a power boost or apply the at least one MPR based at least in part on the lack of the capability.

[0024] In at least one example embodiment, the at least one MPR comprises a first MPR, and wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to determine a time period associated with switching from a second MPR to the first MPR; and transmit control information indicative of the time period.

[0025] In at least one example embodiment, the time period is associated with the at least one uplink transmission, and wherein the control information comprises an indication of the time period or one or more parameters associated with the at least one uplink transmission.

[0026] In at least one example embodiment, the time period comprises a first time period based at least in part on the first MPR comprising a single carrier MPR or the time period comprises a second period based at least in part on the first MPR comprising a multi-carrier MPR.

[0027] In at least one example embodiment, the set of active cells are associated with a same one or more power amplifiers.

[0028] In at least one example embodiment, the set of active cells comprises one or more component carriers configured at the apparatus for wireless communication in accordance with at least one of: a carrier aggregation configuration, a multi-carrier single cell configuration, a dual connectivity configuration, or a dual stack configuration.

[0029] In at least one example embodiment, the subset comprises one or more active nondormant cells.

[0030] In at least one example embodiment, the set of active cells comprises at least one of the following: one or more serving cells, one or more carriers, one or more component carriers, or one or more bandwidth parts (BWPs).

[0031] In at least one example embodiment, the set of active cells comprises one or more secondary cells and a primary cell.

[0032] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to receive, from a network node, control information indicating activation of at least one secondary cell of the one or more secondary cells.

[0033] In at least one example embodiment, an apparatus is provided comprising at least one processor and at least one memory including computer program code (e.g., instructions) configured to, with the at least one processor, cause the apparatus at least to transmit first control information associated with a set of active cells; and receive, during at least a portion of a duration and in accordance with one or more power control parameters, at least one uplink transmission via a subset of the set of active cells, wherein the duration comprises at least one time domain resource for the at least one uplink transmission, wherein the at least one time domain resource is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells, and wherein the one or more power control parameters are based at least in part on at least one maximum power reduction (MPR) associated with the subset.

[0034] In at least one example embodiment, the one or more power control parameters comprise at least one of: a power amplifier power backoff power reduction associated with the subset, a maximum power associated with at least one active cell of the subset, a maximum power associated with uplink transmissions from a user equipment (UE), or a power headroom associated with the UE.

[0035] In at least one example embodiment, the at least one MPR is based at least in part on the duration.

[0036] In at least one example embodiment, the subset comprises a single active cell of the set of active cells, and wherein the at least one time domain resource is non-overlapping with a respective time domain resource for uplink transmissions via each remaining cell of the set of active cells.

[0037] In at least one example embodiment, the at least one MPR comprises at least a single carrier MPR based at least in part on the subset comprising the single active cell.

[0038] In at least one example embodiment, the subset comprises a plurality of active cells of the set of active cells, and wherein the at least one time domain resource is for a respective uplink transmission via each cell of the subset.

[0039] In at least one example embodiment, the at least one MPR is based at least in part on at least one of the following: one or more resource blocks associated with one or more cells of the subset, a duplexing mode associated with the at least one uplink transmission, a type of carrier aggregation associated with the at least one uplink transmission, at least one bandwidth class associated with the subset, a waveform modulation scheme associated with the at least one uplink transmission, a quantity of cells included in the subset, a power class associated with the apparatus, a power amplifier architecture associated with the apparatus, a transmission diversity capability associated with the apparatus, at least one power boost capability associated with the apparatus, an uplink duty cycle associated with the apparatus, one or more operating bands associated with the subset, a band combination associated with the subset, or an aggregated bandwidth associated with the subset.

[0040] In at least one example embodiment, the duplexing mode comprises frequency division duplexing or time division duplexing, and wherein the type of carrier aggregation comprises inter-band carrier aggregation, intra-band non-contiguous carrier aggregation, intra-band contiguous carrier aggregation, or dual connectivity.

[0041] In at least one example embodiment, the at least one MPR is based at least in part on the at least one time domain resource comprising a quantity of time domain resources that satisfies a time domain threshold.

[0042] In at least one example embodiment, the at least one MPR satisfies an MPR threshold.

[0043] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to transmit second control information indicative of a time domain threshold or an MPR threshold, wherein the at least one MPR is based at least in part on the time domain threshold or the MPR threshold.

[0044] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to receive an indication of at least one transmit power for the at least one uplink transmission, wherein the at least one transmit power is based at least in part on the one or more power control parameters.

[0045] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to receive a power headroom report based at least in part on the at least one MPR satisfying a threshold.

[0046] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to receive an indication of a capability for MPR adaptation, wherein the at least one MPR is based at least in part on the capability.

[0047] In at least one example embodiment, the capability is for MPR adaptation with multiple active cells associated with overlapping transmissions or non-overlapping transmissions in the time domain.

[0048] In at least one example embodiment, the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus at least to transmit second control information indicating to enable or disable the MPR adaptation, wherein the at least one MPR is based at least in part on the second control information.

[0049] In at least one example embodiment, the at least one MPR comprises a first MPR, and wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to receive second control information indicative of a time period associated with switching from a second MPR to the first MPR.

[0050] In at least one example embodiment, the time period is associated with the at least one uplink transmission, and wherein the second control information comprises an indication of the time period or one or more parameters associated with the at least one uplink transmission.

[0051] In at least one example embodiment, the time period comprises a first time period based at least in part on the first MPR comprising a single carrier MPR or the time period comprises a second period based at least in part on the first MPR comprising a multi-carrier MPR.

[0052] In at least one example embodiment, the set of active cells are associated with a same one or more power amplifiers.

[0053] In at least one example embodiment, the set of active cells comprises one or more component carriers configured at the apparatus for wireless communication in accordance with at least one of: a carrier aggregation configuration, a multi-carrier single cell configuration, a dual connectivity configuration, or a dual stack configuration.

[0054] In at least one example embodiment, the subset comprises one or more active nondormant cells.

[0055] In at least one example embodiment, the set of active cells comprises at least one of the following: one or more serving cells, one or more carriers, one or more component carriers, or one or more bandwidth parts (BWPs).

[0056] In at least one example embodiment, the set of active cells comprises one or more secondary cells and a primary cell.

[0057] In at least one example embodiment, a method is provided comprising identifying a set of active cells; determining a duration over which at least one time domain resource for at least one uplink transmission via a subset of the set of active cells is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells; determining at least one maximum power reduction (MPR) based at least in part on the subset; and transmitting the at least one uplink transmission during at least a portion of the duration in accordance with one or more power control parameters that are based at least in part on the at least one MPR.

[0058] In at least one example embodiment, a method is provided comprising transmitting first control information associated with a set of active cells; and receiving, during at least a portion of a duration and in accordance with one or more power control parameters, at least one uplink transmission via a subset of the set of active cells, wherein the duration comprises at least one time domain resource for the at least one uplink transmission, wherein the at least one time domain resource is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells, and wherein the one or more power control parameters are based at least in part on at least one maximum power reduction (MPR) associated with the subset.

[0059] In at least one example embodiment, a non-transitory computer readable storage medium is provided. The non-transitory computer readable storage medium comprises computer instructions that, when executed by an apparatus, cause the apparatus to identify a set of active cells; determine a duration over which at least one time domain resource for at least one uplink transmission via a subset of the set of active cells is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least oneother cell of the set of active cells; determine at least one maximum power reduction (MPR) based at least in part on the subset; and transmit the at least one uplink transmission during at least a portion of the duration in accordance with one or more power control parameters that are based at least in part on the at least one MPR.

[0060] In at least one example embodiment, a non-transitory computer readable storage medium is provided. The non-transitory computer readable storage medium comprises computer instructions that, when executed by an apparatus, cause the apparatus to transmit first control information associated with a set of active cells; and receive, during at least a portion of a duration and in accordance with one or more power control parameters, at least one uplink transmission via a subset of the set of active cells, wherein the duration comprises at least one time domain resource for the at least one uplink transmission, wherein the at least one time domain resource is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells, and wherein the one or more power control parameters are based at least in part on at least one maximum power reduction (MPR) associated with the subset.

[0061] In at least one example embodiment, an apparatus is provided that comprises means for identifying a set of active cells; determining a duration over which at least one time domain resource for at least one uplink transmission via a subset of the set of active cells is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells; determining at least one maximum power reduction (MPR) based at least in part on the subset; and transmitting the at least one uplink transmission during at least a portion of the duration in accordance with one or more power control parameters that are based at least in part on the at least one MPR.

[0062] In at least one example embodiment, an apparatus is provided that comprises means for transmitting first control information associated with a set of active cells; and receiving, during at least a portion of a duration and in accordance with one or more power control parameters, at least one uplink transmission via a subset of the set of active cells, wherein the duration comprises at least one time domain resource for the at least one uplink transmission, wherein the at least one time domain resource is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells, and wherein the one or more power control parameters are based at least in part on at least one maximum power reduction (MPR) associated with the subset.

[0063] The above summary is provided merely for purposes of summarizing at least some example embodiments to provide a basic understanding of some aspects of the disclosure. Accordingly, it will be appreciated that the above-described embodiments are merely examples and should not be construed to narrow the scope or spirit of the disclosure in any way. It will also be appreciated that the scope of the disclosure encompasses many potential embodiments in addition to those summarized here, some of which will be further described below.BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Having thus described certain example embodiments of the present disclosure in general terms, reference will hereinafter be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:

[0065] FIG. 1 illustrates an example of a communication network to which one or more examples disclosed herein may be applied;

[0066] FIG. 2 illustrates an example timing diagram to which one or more examples disclosed herein may be applied;

[0067] FIG. 3 illustrates an example timing to which one or more examples disclosed herein may be applied;

[0068] FIG. 4 illustrates an example signaling diagram to which one or more examples disclosed herein may be applied;

[0069] FIG. 5 illustrates an example signaling diagram to which one or more examples disclosed herein may be applied;

[0070] FIG. 6 illustrates an example signaling diagram to which one or more examples disclosed herein may be applied;

[0071] FIG. 7 illustrates an example flowchart of a method to which one or more examples disclosed herein may be applied;

[0072] FIG. 8 illustrates an example flowchart of a method to which one or more examples disclosed herein may be applied; and

[0073] FIG. 9 illustrates an example block diagram of an apparatus to which one or more examples disclosed herein may be applied.DETAILED DESCRIPTION

[0074] The following embodiments are exemplary. Although the specification may refer to “an”, “one”, or “some” embodiment(s) in several locations of the text, this does notnecessarily mean that each reference is made to the same embodiment(s), or that a particular feature only applies to a single embodiment. Single features of different embodiments may also be combined to provide other embodiments. Further, when a particular feature, structure, or characteristic is described in connection of an embodiment, it is within the knowledge of one skilled in the art to apply such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described. It shall be understood that although the terms “first,” “second” and the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another.

[0075] For the purposes of the present disclosure, the phrases “at least one of A or B”, “at least one of A and B”, and “A and / or B” means (A), (B), or (A and B). For the purposes of the present disclosure, the phrase “A, B, and / or C” means (A), (B), (C), (A and B), (A and C), (B and C), or (A, B, and C).

[0076] Some example embodiments described may be implemented in a communication network, such as any of the following radio access technologies (RATs): Worldwide Interoperability for Micro-wave Access (WiMAX), Global System for Mobile communications (GSM, 2G), GSM EDGE radio access Network (GERAN), General Packet Radio Service (GRPS), Universal Mobile Telecommunication System (UMTS, 3G) based on basic wideband-code division multiple access (W-CDMA), high-speed packet access (HSPA), Long Term Evolution (LTE), LTE-Advanced, and enhanced LTE (eLTE), 5G (also called NR), or any future RAT such as 6G. Moreover, communication within the communication network may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Frequency Division Duplex (FDD), Time Division Duplex (TDD), Multiple-Input Multiple-Output (MIMO), Orthogonal Frequency Division Multiple (OFDM), and / or Discrete Fourier Transform spread OFDM (DFT-s-OFDM).

[0077] As used herein, the term “network device” or “network node” refers to a node in a communication network via which user equipment may access the network and / or which is capable of controlling radio communication and managing radio resources within a cell. The network node or network device may be referred to as a base station (BS), an access point (AP) or an access node. The network device may be, depending on the applied technology, for example, a node B (NodeB or NB), an evolved NodeB (eNodeB or eNB), an NR NB (also referred to as a gNB), a Remote Radio Unit (RRU), a radio head (RH), a remote radio head(RRH), a relay, an Integrated Access and Backhaul (IAB) node, a low power node, a nonterrestrial network (NTN) or non-ground network device such as a satellite network device, a low earth orbit (LEO) satellite and a geosynchronous earth orbit (GEO) satellite, or an aircraft network device.

[0078] Moreover, in reference to a split radio access network (RAN), the network device may refer to a centralized unit (CU) of a base station and / or a distributed unit (DU) of a base station. An interface between CU and DU may be referred to as an Fl interface in NR. In the split RAN architecture, node operations may be carried out, at least partly, in the central / centralized unit, CU, (e.g. server, host or node) operationally coupled to the DU, (e.g. a radio head / node). One CU may control one or more DUs, acting at least as transmit / receive (Tx / Rx) nodes. In at least some embodiments, the DUs may comprise e.g. a radio link control (RLC), medium access control (MAC) layer and a physical (PHY) layer, whereas the CU may comprise the layers above RLC layer, such as a packet data convergence protocol (PDCP) layer, a radio resource control (RRC) layer and an internet protocol (IP) layer. Other functional splits are possible too. In practice, any processing task may be performed in either the CU or the DU and the boundary where the responsibility is shifted between the CU and the DU may depend on the applied implementation.

[0079] The term “terminal device” refers to any end device that may be capable of wireless communication. By way of example, a terminal device may be referred to as a communication device, user equipment (UE), a Subscriber Station (SS), or a Mobile Station (MS). The terminal device may include a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones a tablet, a wearable terminal device, a personal digital assistant (PDA), portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, USB dongles, an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD), a vehicle, a drone, a medical device and applications (e.g., remote surgery), an industrial device and applications (e.g., a robot and / or other wireless devices operating in an industrial and / or an automated processing chain contexts), a consumer electronics device, a device operating on commercial and / or industrial wireless networks, and the like.

[0080] A term “resource”, as used herein, may refer to radio resources in time domain, in frequency domain, in space domain, and / or in code domain. Some examples of resources include e.g. a physical resource block (PRB), a radio frame, a subframe, a time slot, a subband, a frequency region, a sub-carrier, a beam, etc. The term “transmission” and / or“reception” may refer to wirelessly transmitting and / or receiving via a wireless propagation channel on radio resources.

[0081] FIG. 1 illustrates an example of a communication network to which one or more examples disclosed herein may be applied. The communication network may be a cellular communication network may comprise a network node 110 providing one or more cells, such as cell 100, and a network node 112 providing one or more other cells, such as cell 102. Each cell may be, e.g., a macro cell, a micro cell, femto, or a pico cell, for example. The cell may define a coverage area or a service area of the corresponding access node.

[0082] The network node 110 may provide a user equipment (UE) 120 (one or more UEs) with wireless access to the communication network. The wireless access may comprise downlink (DL) communication from the network node to the UE 120 and uplink (UL) communication from the UE 120 to the network node. Examples of uplink channels comprise physical uplink control channel (PUCCH) for transmitting control information and physical uplink shared channel (PUSCH) for transmitting data towards the network. Examples of downlink channels comprise physical downlink control channel (PDCCH) for transmitting control information and physical downlink shared channel (PDSCH) for transmitting data towards the user equipment.

[0083] There may be a plurality of UEs 120, 122 in the system. Each of them may be served by the same or by different network nodes 110, 112. UE may be configured with dual connectivity (DC), wherein the UE, e.g. UE 120, may be connected to multiple network nodes 110, 112. The UEs 120, 122 may communicate with each other, in case device-to- device (D2D) communication interface is established between them via a so-called sidelink (SL). Such D2D communications may be referred to as machine-to-machine, peer-to-peer (P2P) communications, or vehicle-to-vehicle (V2V), for example.

[0084] In the case of multiple network nodes in the communication network, the network nodes may be connected to each other via an interface. LTE specifications refer to such an interface as an X2 interface. An interface between an LTE node and a 5G node, or between two 5G nodes may be called an Xn interface.

[0085] The network nodes 110 and 112 may be further connected via another interface to a core network 116 of the communication network. The LTE specifications specify the core network as an evolved packet core (EPC), and the core network may comprise e.g. a mobility management entity (MME) and a gateway node. The MME may handle mobility of terminal devices in a tracking area encompassing a plurality of cells and handle signaling connections between the terminal devices and the core network. The gateway node may handle datarouting in the core network and to / from the terminal devices. The 5G specifications specify the core network as a 5G core (5GC). The 5G core may comprise e.g. an access and mobility management function (AMF) and a user plane function / gateway (UPF) and other functions. The AMF may handle termination of non-access stratum (NAS) signaling, NAS ciphering & integrity protection, registration management, connection management, mobility management, access authentication and authorization, security context management. The UPF node may support packet routing and forwarding, packet inspection and quality of service (QoS) handling, for example.

[0086] The system of FIG. 1 may support one or more power control procedures for maintaining reliable communications, for example, between the UEs 120, 122 and the network nodes 110, 112. In some instances, a UE (e.g., one of the UEs 120, 122) may be configured to support MPR and / or power boosting to maintain or reach a suitable transmit power for communications with a network node (e.g., one of the network nodes 110, 112). In some such instances, a transmit power used at the UE for one or more uplink (uplink) transmissions may be based on the MPR or power boosting. For example, the UE may be configured to apply an MPR to achieve (or maintain) a suitable transmit power. In some instances, a suitable transmit power includes a power level that satisfies one or more emission constraints and / or device-specific constraints. An MPR applied by the UE for an uplink transmission may depend on a modulation scheme, bandwidth, and / or frequency band used at the UE for the uplink transmission. Additionally, or alternatively, the UE may be configured to apply a power boost during an uplink transmission to improve signal quality, for example, in scenarios in which channel conditions are reduced and / or the UE (or network node) is experiencing increased interference. In some instances, a power boost (also referred to as power boosting) by the UE may include the UE increasing the transmit power for one or more resource blocks (RBs) or subcarriers during an uplink transmission.

[0087] In some examples, a power configured at the UE (e.g., a maximum configured power at the UE) depends on the MPR at the UE. The MPR may be determined for a single carrier (e.g., 1 component carrier (CC) per band), for intra-band contiguous carrier aggregation (CA), intra-band non-contiguous CA, inter-band CA, and / or dual-connectivity. Some example data structures for determining an MPR at the UE (e.g., for single carrier or uplink transmission) are shown in Tables 1 and 2. Table 1 shows an example data structure for selecting an MPR for a first power class (e.g., power class 3), and Table 2 shows an example data structure for selecting an MPR for a second data class (e.g., power class 2).

[0088] The UE may be configured to select an MPR for intra-band contiguous CA. In some examples, for intra-band contiguous CA, an MPR used for an output power (e.g., maximum output power , such as a configured maximum output power (PCMAX))atthe UE for an uplink transmission with a contiguous RB allocation may be specified in accordance with one or more data structures, which may be based on a power class associated with the uplink transmission (e.g., a device type of the UE and / or a scenario associated with the uplink transmission). For example, Table 3 shows an example data structure for selecting an MPR for UE power class 3 and CA bandwidth classes B and C. Table 4 shows an example data structure for selecting n MPR used for determining an output power (e.g., a maximum output power, such as a configured maximum output power (Pc MAX))atthe UE for an uplink transmission with a contiguous RB allocation for power class 2 and CA bandwidth classes B and C (e.g., when signalling is absent for a dualPA-Architecture information element (IE)) or for power class 2 and CA bandwidth class C (e.g., when signalling is indicated for the dualPA-Architecture IE). Table 5 shows an example data structure for selecting an MPR used for determining an output power (e.g., a maximum output power, such as a configuredmaximum output power (PCMAX )atthe UE for an uplink transmission with a contiguous RB allocation for power class 2 and CA bandwidth classes B and C with transmission diversity (TxD) supported (e.g., dual uplink transmission (Tx2)). In some examples, a modulation format or waveform type is different on different CCs. In some such examples, one or more rules may be used to apply one or more constraints to the waveform type (e.g., discrete Fourier transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) or cyclic prefix-orthogonal frequency division multiplexing (CP-OFDM)) and modulation order used in the configuration (e.g., with the largest MPR among MPRs provided for in the data structure). In the examples of Tables 1-8, the term “pi / 2 BPSK” refers to multiple (e.g., all) variants of pi / 2 binary phase shift keying (BPSK).

[0089] The UE may be configured to select an MPR for intra-band contiguous CA. In some examples, for intra-band contiguous CA, an MPR used for determining an output power (e.g., a maximum output power, such as a configured maximum output power (PCMAXT)atthe UE for an uplink transmission with a non-contiguous RB allocation may be specified in accordance with one or more data structures, which may be based on a power class associated with the UE. For example, Table 6 shows an example data structure for selecting an MPR for UE power class 3 and CA bandwidth classes B and C. Table 7 shows an example datastructure for selecting an MPR for power class 2 and CA bandwidth classes B and C (e.g., when signalling is absent for the dualPA- Architecture IE) or for power class 2 and CA bandwidth class C (e.g., when the signalling is indicated for the dualPA-Architecture IE). Table 8 shows an example data structure for selecting an MPR for power class 2 and CA bandwidth classes B and C with TxD supported (e.g., with dual Tx2). In some examples, for intra-band non-contiguous CA, an MPR (e.g., an allowed MPR) for the output power at the UE is specified into 2 types, such as a first type of MPR used to meet a first threshold (e.g., -30dBm / MHz) and a second type of MPR used to meet a second threshold (e.g., -13dBm / MHz). In some examples, the UE may select an MPR to meet -30dBm / MHz and / or an MPR to meet -13dBm / MHz according to the UE dualP A- Architecture, power class, and / or total bandwidth (B) for multiple CCs (e.g., a total bandwidth for all CCs, B(MHz)). In some such examples, the selected MPR may range between about 6.5 dB and about 19.5 dB depending on one or more of the following: UE dualPA-Architecture, power class, or total bandwidth (B) for multiple CCs. The values provided in Tables 1-8 are merely examples and should not be construed to narrow the scope or spirit of the disclosure in any way.

[0090] The UE may be configured to support MPR for inter-band CA with one uplink carrier included in (e.g., assigned to) one band. Additionally, or alternatively, the UE may be configured to support MPR for inter-band CA with two contiguous uplink carriers assigned to one band. Additionally, or alternatively, the UE may be configured to support MPR for inter-band CA with two non-contiguous uplink carrier assigned to one band. Additionally, or alternatively, the UE may be configured to support MPR for inter-band CA with multiple uplink carriers assigned to two bands. In some examples, the UE may be configured to support MPR for combinations of intra-band and inter-band CA with three uplink carriers (e.g., up to two contiguously aggregated carriers per operating band). In some such examples, the MPR (e.g., the maximum output power reduction constraints) may be applied for a band supporting one carrier and / or for a band supporting two contiguous carriers. In some examples, for uplink CA, the UE may be configured to set its maximum output power (PCMAX.C) f°rserving cell c and its total configured maximum output power (PCMAX) f°rintra- band contiguous CA, intra-band non-contiguous CA, and / or inter-band CA.

[0091] In some examples, the UE may be configured to support one or more procedures for uplink power control that includes a combination of open-loop power control and closed- loop power control. Open-loop power control may include support for fractional path-loss compensation in which the UE estimates an uplink path-loss based on downlink measurements and sets a transmit power at the UE accordingly. Closed-loop power control may be based on one or more TPC commands (e.g., explicit TPC commands) provided by the network. In some examples, PUSCH power control may be based on a combination of the open-loop power control and the closed-loop power control. The UE may be configured to determine the PUSCH transmission power (in dBm) in accordance with the following Equation 1:in which the parameter Po,b,f,c(j isanetwork node receive power parameter where j G {0,1, ... , / — 1}; the parameter MRB bfC(i) is the bandwidth of the resource assignment expressed in number of resource blocks for transmission occasion (z) on active uplink BWP (b) of carrier ( / ) of serving cell (c); the parameter ( r) corresponds to a subcarrier spacing (SCS) configuration; the parameter abfC(f) is a fractional power control parameter configured at the UE for active uplink BWP (b) of carrier ( / ) of serving cell (c), the parameter PPb,f,c( l) isadownlink pathloss parameter calculated at the UE as referenceSignalPower - higher layer filtered RSRP using reference signal index (q), where referenceSignalPower is provided by higher layers and RSRP is defined for the reference serving cell and the higherlayer filter configuration provided by Quantity Config for the reference serving (c); and parameter(i) is transmit power adjustment parameter that is determined based on a modulation and coding scheme at the UE for uplink BWP (Zz) of each carrier ( / ) and serving cell (c), and fb,f,c(-> ) corresponds to a power control adjustment state for active uplink BWP (Zz) of carrier (f) of serving cell (c). The UE may be configured to determine the PUSCH transmission power in accordance with Equation 1 based on the UE being configured, in PUSCH transmission occasion (z), to transmit a PUSCH on an active uplink BWP (Zz) of carrier (f) of serving cell (c) using a parameter set configuration with index (j) and a PUSCH power control adjustment state with index (Z).

[0092] In some examples, the UE may be configured to determine a sounding reference signal (SRS) transmission power (in dBm) in accordance with the following Equation 2:where hbfC(i, / ) corresponds to a power control adjustment state for active uplink BWP (b) of carrier ( / ) of serving cell (c). The UE may be configured to determine the SRS transmission power in accordance with Equation 2 based on the UE being configured, in occasion (z), to transmits an SRS in accordance with a configuration by SRS-ResourceSet on an active uplink BWP (b) of carrier ( / ) of serving cell (c) using SRS power control adjustment state with index (Z).

[0093] In some examples, the UE may be configured to determine the PUCCH transmission power (in dBm) in accordance with the following Equation 3:where gb,f,c(f 0 corresponds to a power control adjustment state for active uplink BWP (Zz) of carrier (f) of primary cell (c). The UE may be configured to determine the PUCCH transmission power in accordance with Equation 3 based on the UE being configured, in occasion (z), to transmits a PUCCH an active uplink BWP (Zz) of carrier (f) of primary cell (c) using PUCCH power control adjustment state with index (Z).

[0094] In some instances, the system of FIG. 1 may support one or more MPR for a single carrier and / or CA. In some such instances, an MPR for a single carrier may bedifferent from (e.g., substantially different from) an MPR for CA. That is, there may be a relatively large MPR difference between single carrier and CA MPR . For example, for CA, the MPR may be based on a configuration of a band combination rather than, for example, one or more active uplink cells. That is, MPR for CA may be defined based on the configuration of band combination rather than based on the active uplink CCs. For example, the UE may be configured with one or more cells (e.g., one or more CCs) across a combination of one or more radio frequency bands (also referred to as a band combination). The network may activate one or more of the configured cells (e.g., one or more of the configured CCs), which the UE may aggregate for an uplink transmission. That is, the UE may use one or more of the activated CCs to perform uplink CA. In some such examples, the UE may select an MPR for the uplink transmission based on the band combination (e.g., the configured cells) rather than the activated CCs. Utilization of a transmission power capability of the UE for uplink CA or dual connectivity (DC) may be reduced (e.g., may not be fully utilized) compared to the utilization of the transmission power capability of the UE for a single CC transmission. In some examples, the utilization of the transmission power capability of the UE for uplink CA or dual DC may be reduced compared to the single CC transmission (e.g., a single cell transmission) due to an MPR for the uplink CA or DC being determined based on the band combination. For example, determining the MPR based on the band combination may lead to an unnecessarily low transmit power at the UE for uplink CA. In some examples, a relatively low transmission power for uplink CA may lead to a reduced coverage area of the uplink CA, as well as an increased likelihood of power sharing and / or failed uplink communications (e.g., uplink dropping).

[0095] In some examples, to improve the utilization of the transmission power capability at the UE, the UE may be configured to select an MPR for the CA (e.g., intra-band uplink CA) or DC based on active cells rather than based on the configured cells in the band combination. The network may activate / deactivate configured cells (e.g., secondary cells (SCells)) at the UE via one or more mechanisms. For example, configured SCell(s) may be activated and deactivated through the UE receiving an SCell activation / deactivation MAC CE, such as an SCell activation / deactivation MAC CE described in TS 38.321 clause 6.1.3.10 and / or an enhanced SCell activation / deactivation MAC CE described in TS 38.321 clause 6.1.3.55. Additionally, or alternatively, the UE may be configured with a timer (e.g., an sCellDeactivationTimer timer) per configured SCell (e.g., except the SCell configured with PUCCH, if any). In some such examples, the UE may determine that an SCell associated with a timer is deactivated in response to expiry of the timer. Additionally, or alternatively, the UEmay be configured with a state (e.g., an .sCellState) per configured SCell. In some such examples, the UE may determine to activate an SCell associated with an sCellState in response to being configured with the sCellState parameter. Additionally, or alternatively, the UE may deactivate an SCell in a secondary cell group (SCG) in response to receiving an RRC command (e.g., scg-State) indicating that SCells of the SCG are deactivated.

[0096] In some examples, SCell activation / deactivation may be based on MAC-CE signaling, which is relatively slow compared to a rate at which the channel conditions may change and / or compared to lower layer signaling (e.g., DCI). Accordingly, the network may activate more uplink cells than may be used (or predicted to be used) at the UE to provide for improved (e.g., faster) load balancing and adaptation of uplink transmission. The load balancing and adaptation of the uplink transmission may be based on UE buffer status report (BSR), quality of service (QoS) constraints, and / or scheduler constraints. In some examples, the UE may consider CA MPR based on active cells rather than configured cells. In some such examples, the UE may determine to use a relatively high CA MPR during a period based on one or more active cells irrespective of whether the one or more active CCs are configured to transmit during the period. For example, the UE may determine the MPR based on multiple (e.g., all) active cells during a period in which a single uplink transmission (via a single cell) is scheduled among the multiple active cells or during a period in which one cell among the multiple active cells is non-dormant. For example, during a period in which the UE is configured with three active cells and 1 uplink transmission (e.g., via one of the three active cells), the UE may be configured to use an MPR based on the three active cells. In some examples, the MPR determination based on the three active cells may result in an unnecessarily low uplink transmission power. That is, an MPR determination based on active cells that are dormant and / or not configured (e.g., scheduled) for an uplink transmission may result in a relatively inaccurate MPR (e.g., the MPR may be optimized) and, in some instances, an unnecessarily low uplink transmission power. A relatively low transmission power may lead to reduced coverage, as well as reduced data rates and a degraded load balancing capability. In some examples, signals transmitted using a relatively low transmission power may be susceptible to dynamic power sharing and may have an increased likelihood of uplink dropping.

[0097] Various aspects of the present disclosure provide for an enhanced MPR and power boost framework for uplink transmissions, including multiple frequency division multiplexed (FDMed) uplink transmissions. Some such uplink transmissions include, for example, uplink transmissions in accordance with CA, DC, dual stack, multi-carrier single cell, and multipleFDMed PUSCH. That is, the UE may be configured to apply the MPR and power boost framework to wireless communication in accordance with at least one of: a CA configuration, a multi-carrier single cell configuration, a DC configuration, or a dual stack configuration.

[0098] In some examples, in accordance with the enhanced MPR and power boost framework of the present disclosure, a UE (e.g., one of the UEs 120,122) may identify a set of active cells. For example, the UE may obtain information that is indicative of activation of a set of cells. In some examples, the UE may receive the information from the network (e.g., via a MAC CE, downlink control information (DCI), or RRC signaling). Additionally, or alternatively the UE may determine the information (at least partially) at the UE, for example, based on one or more rules, conditions, and / or configurations at the UE. The set of active cells may include a single active cell, or multiple active cells. For example, the set of active cells may include one active cell with one or more carriers. In some examples, the set of active cells may include one or more SCells or no SCell (e.g., one or more secondary component carriers (SCCs)) and / or one or more PCells (e.g., one or more primary component carriers (PCCs)). In other words, the set of active cells may include one or multiple (e.g., all) active serving cells. In some examples, the network (e.g., the network node) may activate a cell, such as an SCell, via RRC signaling and / or MAC and / or DCI signaling. For example, an SCell may be activated by RRC signaling used for an SCell configuration if the parameter sCellState is set to “activated” for the SCell (e.g., by upper layers). Additionally, or alternatively, an SCell may be activated / deactivated via MAC CE or DCI. In some examples, the network may activate multiple SCells. In some other examples, the network may activate a single SCell (or simply cell). In some examples, the PCell may be activated automatically (e.g., by default, without any additional signaling). In some examples, the set of active cells include one or more CCs configured at the apparatus for wireless communication in accordance with at least one of: a CA configuration, a multi-carrier single cell configuration, a DC configuration, or a dual stack configuration. In some examples, at least one cell may be or may correspond to or may include at least one carrier, at least one component carrier, at least one bandwidth, and / or at least one bandwidth part.

[0099] In some examples, in accordance with the enhanced MPR and power boost framework of the present disclosure, the UE may determine a duration over which at least one time domain resource allocated for at least one uplink transmission via a subset of the set of active cells is non-overlapping with at least one other time domain resource allocated for at least one other uplink transmission via at least one other cell of the set of active cells. In other words, the UE may determine at least one period for time non-overlapping uplinktransmissions among the set of active cells. The at least one time domain resource may include one or more types of time domain resources (e.g., any type of time domain resource), such as one or more mini-slots, one or more slots, one or more subframe, and / or one or more symbols. In some examples, the period for time non-overlapping uplink transmissions may correspond to a period in which a single cell of the set of active cells is configured for an uplink transmission. For example, the period may include a period over which a UE may be configured with no uplink transmissions, with one or more uplink transmissions in a single cell of the set of active cells. In other words, the period may include a period at the UE in which no uplink transmission or one or more uplink transmissions are scheduled in a single cell.

[0100] Accordingly, in some such examples, the subset includes the single cell. That is, in some examples, the period for time non-overlapping uplink transmissions may be a period in which a single active cell of the set of active cells is configured for an uplink transmission and remaining active cells of the set of active cells are not configured for (e.g., scheduled for) an uplink transmission. In some such examples, the UE determines the one or more parameters based on the single active cell with the time non-overlapping uplink transmission among the active cells in the set and / or the period (or portion(s) or function of the period) of the time non-overlapping uplink transmission. In some examples, the subset or the single active cell is an active non-dormant cell.

[0101] In some other examples, the period for time overlapping uplink transmissions may correspond to a period in which multiple cells included in the set of active cells are configured for an uplink transmission. Accordingly, in some such examples, the subset includes the multiple cells. In other words, the period for time overlapping uplink transmissions may be a period in which multiple active cells of the set of active cells are configured for (e.g., scheduled for) an uplink transmission and remaining active cells of the set of active cells are not configured for an uplink transmission. Accordingly, in some such examples, the period for time overlapping uplink transmissions may include (e.g., may also be) a period of time non-overlapping uplink transmissions for the multiple cells. That is, in some examples, the UE determines the one or more parameters based on multiple active cells with time overlapping uplink transmissions and / or the period (or portion(s) or function of the period) of the time overlapping uplink transmissions. In some examples, the multiple active cells are active non-dormant cells.

[0102] In some examples, the UE may determine at least one MPR (e.g., for the at least one uplink transmission) based on the subset. For example, the UE may select one or moreMPRs for the at least one uplink transmission based on one or more cells that are active and configured for an uplink transmission. In some such examples, the UE may transmit the at least one uplink transmission during at least a portion of the duration in accordance with one or more power control parameters that are based on the at least one MPR. That is, the UE may transmit the at least one uplink transmission during at least a portion of the duration in accordance with one or more power control parameters that are based on the determined MPR. The one or more power control parameters may include a power amplifier power backoff (i.e., power reduction) to be applied by the UE, a maximum power per active serving cell (e.g., PCMAX .C)’atotal maximum power for the UE (e.g., PCMAX and / or a power headroom at the UE. In some examples, the UE may determine the at least one MPR based on one or more resource blocks associated with one or more cells of the subset (e.g., whether an RB allocation for each cell is an edge, outer, or inner RB allocation), a duplexing mode associated with the at least one uplink transmission (e.g., whether the at least one uplink transmission will be FDMed or time division multiplexed (TDMed)), a type of CA associated with the at least one uplink transmission (e.g., whether the at least one uplink transmission will include inter-band CA, intra-band non-contiguous CA, or intra-band contiguous CA, or dual connectivity), at least one bandwidth class associated with the subset (e.g., whether the cells are bandwidth class B or C), a waveform modulation scheme associated with the at least one uplink transmission, and / or a quantity of cells included in the subset (e.g., whether a single cell or multiple cells are configured for the at least one uplink transmission), a power class associated with the UE, a power amplifier architecture at the UE (e.g., a dualP A- Architecture UE capability), a dualTx capability at the UE, a transmission diversity capability at the UE (e.g., whether the UE indicated Tx diversity (TxD) supported), at least one power boost capability, an uplink duty cycle (e.g., a maxUplinkDutyCycle capability) at the UE, one or more operating bands associated with the subset, a band combination associated with the subset, and / or an aggregated bandwidth associated with the subset (e.g., a total aggregated bandwidth).

[0103] In some examples, by providing for the UE to determine the MPR based on the subset, the enhanced MPR and power boost framework of the present disclosure enables the UE to determine more accurately (e.g., to optimize more dynamically) an uplink transmit power (e.g., a CA uplink transmit power) based on time non-overlapping uplink transmission(s) and / or uplink active cells that are associated in a time overlapping period. In some examples, by enabling the UE to more accurately determine an uplink transmit power,the enhanced MPR and power boost framework of the present disclosure may provide for higher coverage and capacity for CA / DC with multiple active CCs, as well as provide for lower latency due to less hybrid automatic repeat request (HARQ) re-transmissions.

[0104] Additionally, in some examples, by enabling the UE to more accurately determine an uplink transmit power, the enhanced MPR and power boost framework of the present disclosure may provide for higher uplink transmit powers at the UE for CA, which may lead to improved load balancing at the network. For example, the UE may be configured with a band combination including CC1, CC2, and CC3, in which CC1 and CC2 are active. During at least a portion of a duration, CC1 is configured to transmit and CC2 is not configured to transmit. That is, during at least the portion of the duration, CC1 is configured for at a time non-overlapping uplink transmission. In some examples, the UE may be configured with a first MPR (MPRO), which considers all configured cells in a band combination (e.g., CC1, CC2, and CC3). The UE may also be configured with a second MPR (MPR1), which considers all active cells in the band combination (e.g., CC1 and CC2). The UE may be further configured with a third MPR (MPR2), which considers active cells with time nonoverlapping uplink transmissions. In some such examples, MPR2 may be less than MPR1, which may be less than MPRO. Accordingly, by using MPR2 for the time non-overlapping uplink transmission (e.g., rather than MPRO or MPR1), the UE may achieve an improved (e.g., better) better power boost.

[0105] As used herein, a cell may refer to a serving ell, one or more carriers, one or more CCs, and / or one or more bandwidth parts. That is, in some examples, a cell may include one or more CCs or one or more active bandwidth parts. In some examples, a CC may correspond to (or be otherwise associated with) an FDMed uplink transmission (e.g., any FDMed uplink transmission, such as a multi-PUSCH in the frequency domain). In some examples, a CC or cell (e.g., each CC or cell) may be used for frequency division duplex (FDD) and / or time division duplex (TDD) communications. In some examples, the set of active cells (e.g., identified at the UE) may include cells sharing a same one or more power amplifiers. For example, the UE may have one or more power amplifiers in which each power amplifier may be shared among at least 2 CCs. In some examples, the one or more active cells included in the subset may be combined by the UE in accordance with a CA framework, a multi-carrier single cell framework, a dual connectivity framework, and / or a dual stack framework.

[0106] FIG. 2 illustrates an example timing diagram to which one or more examples disclosed herein may be applied. In accordance with the enhanced MPR and power boost framework of the present disclosure, a UE may determine one or more MPRs to be appliedduring a duration based on one or more active cells configured for one or more uplink transmissions during the duration. In some examples, the UE may be configured to determine the one or more MPRs based on a single active cell (or active non-dormant cell) with time non-overlapping uplink transmission among multiple uplink active cells (e.g., all uplink active cells) and / or the period (or portion(s) or function of the period) of the time nonoverlapping uplink transmission(s). In some examples, the UE may consider the period (or portion(s) or function of the period) of the time non-overlapping uplink transmission(s) in the determination of MPR by at least considering one or more corresponding MPR assumptions. For example, the UE may determine that an MPR determined based on one active cell may be valid or applicable at least in or during that period (or at least in a portion(s) or function of that period). In some examples, the UE may determine an applicable MPR table (e.g., single carrier MPR table) during the time non-overlapping uplink transmission(s) among multiple uplink active cells. In some examples, the UE may determine the applicable MPR table during the time non-overlapping uplink transmission(s) among multiple uplink active cells (e.g., an MPR defined in Table 6.2.2-1 of TS 38.101-1 applies for UE power class 3 CA bandwidth classes B and C; an MPR defined in Table 6.2D.2-1 of TS 38.101-1 applies for power class 2 CA bandwidth classes B and C when TxD capability is indicated; and MPR defined in Table 6.2.2-2 of TS 38.101-1 applies for power class 2 CA bandwidth classes B and C when TxD capability is absent).

[0107] As illustrated in the example of FIG. 2, the network may configure the UE with configured cells 220 (e.g., corresponding to CC1, CC2, and CC3). That is, CC1, CC2, and CC3 may each correspond to a respective cell configured at the UE. Although the example of FIG. 2 illustrates a single CC being associated with a single cell, it is to be understood that a cell may correspond to one or multiple CCs.

[0108] In some examples, one or more of the configured cells 220 may be inactive and one or more of the configured cells 220 may be active (e.g., dormant or non-dormant). In the example of FIG. 2, CC3 corresponds to an inactive cell, while CC1 and CC2 correspond to active cells 222 (e.g., active non-dormant cell(s) and / or active dormant cell(s)). The UE may use the active cells 222 for wireless communication with a network node. Accordingly, the active cells 222 (CC1 and CC2) may be associated with active periods with or without uplink transmissions. Additionally, remaining cells of the configured cells 220 (e.g., CC3) may be associated with inactive periods or inactive cells.

[0109] In accordance with the enhanced MPR and power boost framework of the present disclosure, the UE may determine at least one period for time non-overlapping uplinktransmissions among the active cells 222. In the example of FIG. 2, a first duration 202 may include a first period 210, a second period 211, and a third period 212, which overlap in time. The first period 210 corresponds to one or more time-domain resources over which CC1 is configured for (e.g., may be used for) uplink transmissions. That is, the first period 210 correspond to an active period with uplink transmission(s) for a first active cell (CC1) of the active cells 222. The second period 211 corresponds to one or more time-domain resources over which CC2 is configured for (e.g., may be used for) uplink transmissions. That is, the second period 211 correspond to an active period with uplink transmission(s) for a second active cell (CC2) of the active cells 222. The third period 212 corresponds to one or more time-domain resources over which CC3 is inactive. That is, the third period 212 correspond to an inactive period for a cell configured at the UE (e.g., one of the configured cells 220). Accordingly, based on the first period 210 and the second period 211 corresponding to active periods with uplink transmission(s), the UE may determine that (at least a portion of) the first duration 202 includes a period for time overlapping uplink transmissions among the active cells 222. In other words, the UE may determine that the first duration 202 includes one or more time overlapping uplink transmissions between the active cells 222. In some such examples, the UE may determine a first MPR for the first duration 202 based on CC1 and CC2.

[0110] As illustrated in the example of FIG. 2, a type of period associated with a cell may be the same throughout a duration. In some other examples, the type of period may change throughout a duration. That is, during a given duration, an active cell (e.g., CC1 or CC2) may be associated with an active period without uplink transmission(s) and / or an active period with uplink transmissions.

[0111] In the example of FIG. 2, a second duration 204 may include a fourth period 213, a fifth period 214, and a sixth period 215, which overlap in time. The fourth period 213 corresponds to one or more time-domain resources over which CC1 is configured for (e.g., may be used for) uplink transmissions. That is, the fourth period 213 correspond to an active period with uplink transmission(s) for the first active cell (CC1) of the active cells 222. The fifth period 214 corresponds to one or more time-domain resources over which CC2 is not configured for (e.g., is not used for) uplink transmissions. That is, the fifth period 214 correspond to an active period without uplink transmission(s) for the second active cell (CC2) of the active cells 222. The sixth period 215 corresponds to one or more time-domain resources over which CC3 is inactive. That is, the sixth period 215 corresponds to an inactive period for CC3. Based on the fourth period 213 corresponding to an active period with uplinktransmission(s) and the fifth period 214 corresponding to an active period without uplink transmission(s), the UE may determine that the portion of the second duration 204 including the fourth period 213 and the fifth period 214 corresponds to a period for time nonoverlapping uplink transmission(s) among the active cells 222. In other words, the UE may determine that the fourth period 213 and the fifth period 214 include at least one time domain resource for at least one uplink transmission via a subset (CC1) of the active cells 222, which is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell (CC2) of the active cells 222. In other words, the UE may determine that the second duration 204 includes no time overlapping uplink transmissions between the active cells 222. That is, during the fourth period 213, the subset (CC1) of active cells 222 may be configured for uplink transmissions and remaining active cells (CC2) may not be configured for uplink transmissions.

[0112] In accordance with the enhanced MPR and power boost framework of the present disclosure, the UE may determine a second MPR for (at least) the portion of the duration that includes the fourth period 213 and the fifth period 214 based on CC1 and / or the fourth period 213. That is, the UE may determine the second MPR based on a single active cell (or active non-dormant cell) with time non-overlapping UL transmission(s) among active cells 222 (e.g., all UL active cells) and / or the period (or portion(s) or function of the period) of the time non-overlapping UL transmission(s). The UE may transmit the at least one uplink transmission via CC1 during the fourth period 213 in accordance with one or more power control parameters that are based on the second MPR (e.g., the MPR determined based on CC1 and / or the fourth period 213).

[0113] In the example of FIG. 2, a third duration 206 may include a seventh period 216, an eighth period 217, and a ninth period 218, which overlap in time. The seventh period 216 corresponds to one or more time-domain resources over which CC1 is not configured for (e.g., is not used for) uplink transmissions. That is, the seventh period 216 correspond to an active period without uplink transmission(s) for the first active cell (CC1) of the active cells 222. The eighth period 217 corresponds to one or more time-domain resources over which CC2 is configured for (e.g., may be used for) uplink transmissions. That is, the eighth period 217 correspond to an active period with uplink transmission(s) for the second active cell (CC2) of the active cells 222. The ninth period 218 corresponds to one or more time-domain resources over which CC3 is inactive. That is, the ninth period 218 corresponds to an inactive period for CC3. Accordingly, based on the seventh period 216 corresponding to an active period without uplink transmission(s) and the eighth period 217 corresponding to an activeperiod with uplink transmission(s), the UE may determine that the portion of the third duration 206 including the seventh period 216 and the eighth period 217 correspond to a period for time non-overlapping uplink transmissions among the active cells 222. In other words, the UE may determine that the seventh period 216 and the eighth period 217 include at least one time domain resource for at least one uplink transmission via a subset (CC2) of the active cells 222, which is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell (CC1) of the active cells 222. In other words, the UE may determine that the third duration 206 includes no time overlapping uplink transmissions between the active cells 222. That is, during the eighth period 217, the subset (CC2) of active cells 222 may be configured for uplink transmissions and remaining active cells (CC1) may not be configured for uplink transmissions.

[0114] In accordance with the enhanced MPR and power boost framework of the present disclosure, the UE may determine a third MPR for (at least) the portion of the duration that includes the seventh period 216 and the eighth period 217 based on CC2 and / or the eighth period 217. That is, the UE may determine the third MPR based on a single active cell (or active non-dormant cell) with time non-overlapping UL transmission among the active cells 222 (e.g., all UL active cells) and / or the period (or portion(s) or function of the period) of the time non-overlapping UL transmission. The UE may transmit the at least one uplink transmission via CC2 during the eighth period 217 in accordance with one or more power control parameters that are based on the third MPR (e.g., the MPR determined based on CC2 and / or the eighth period 217). The third MPR may be the same as, or different from, the second MPR.

[0115] Thus, as illustrated in the example of FIG. 2, the UE may determine an MPR (and one or more power control parameters) at least partially based on a single active cell (or active non-dormant cell) with time non-overlapping UL transmission among active cells (e.g., all active uplink cells) and / or the period (or portion(s) or function of the period) of the time non-overlapping UL transmission.

[0116] In some examples, the UE may use a single carrier MPR for the at least a portion of the second duration 204 (e.g., the portion including the fourth period 213 and the fifth period 214) and at least a portion of the third duration 206 (e.g., the portion including the seventh period 216 and the eighth period 217) based on the UE determining that the portion of the second duration 204 and the portion of the third duration 206 including time nonoverlapping UL transmissions among the active cells 222. That is, the UE determines at least one period for time non-overlapping UL transmissions among the active cells 222 (e.g., allactive cells) and uses single carrier MPR for one or more of the at least one determined period or for at least part of one or more of the at least one determined period. The single carrier MPR may be an example of an MPR determined in accordance with one or more tables (e.g., one or more of Tables 1-8). In some examples, the UE may determine that, during at least a portion of the second duration 204 and / or the third duration 206, the applicable MPR table is at least one of the following: an MPR defined in Table 6.2.2- 1 of TS 38.101-1 for UE power class 3 CA bandwidth classes B and C; an MPR defined in Table 6.2D.2-1 of TS 38.101-1 for power class 2 CA bandwidth classes B and C when TxD capability is indicated; and MPR defined in Table 6.2.2-2 of TS 38.101-1 for power class 2 CA bandwidth classes B and C when TxD capability is absent).

[0117] In some examples, the UE may determine the period at least partially based on one or more received configuration(s) and / or indication(s) from the network node. Accordingly, the MPR may change dynamically, for example, if the MPR is determined (at least partially) based on one or more dynamic configurations. Alternatively, the MPR be semi-static / static, for example, if the MPR is determined (at least partially) based on one or more semi-static / static configurations.

[0118] In some examples, the active cells 222 may share a same one or more power amplifiers. For example, the UE may determine the MPR to be a single carrier MPR (and may thus determine PCMAX .C based on the single carrier MPR) for time non-overlapping uplink transmission among active cells sharing same the same power amplifier (e.g., for one or more uplink transmission within a time window for non-overlapping transmission among N cells, such as the second duration 204 or the third duration 206). That is, in the example of FIG. 2, the second MPR (MPR2) during the second duration 204 and the third MPR (MPR3) during the third duration 206 are single carrier MPRs determined based on time nonoverlapping uplink periods among active (or active and non-dormant) uplink cells sharing the same power amplifier.

[0119] FIG. 3 illustrates an example timing diagram to which one or more examples disclosed herein may be applied. In accordance with the enhanced MPR and power boost framework of the present disclosure, a UE may determine one or more MPRs to be applied during a duration based on one or more active cells configured for one or more uplink transmissions during the duration. In some examples, the UE may be configured to determine the one or more MPRs based on the active (or active non-dormant) cells with timeoverlapping UL transmissions, and / or the period (or portion(s) or function of the period) ofthe time overlapping uplink transmissions. In some examples, the UE may consider the period (or portion(s) or function of the period) of time overlapping uplink transmissions in the determination of MPR by at least considering one or more corresponding MPR assumptions. For example, the UE may determine that an MPR determined based on two (or more) active cells may be valid or applicable at least in or during that period (or at least in a portion(s) or function of that period). In some examples, UE may determine the applicable MPR based on the subset of active cells associated in the time-overlapping uplink period (e.g., rather than all active cells or configured cells). The determined MPR during the time overlapping period may be included in one of MPR tables for intra-band contiguous CA, intra-band non-contiguous CA, inter-band CA, or DC.

[0120] As illustrated in the example of FIG. 3, the network may configure the UE with configured cells 324 (e.g., corresponding to CC1, CC2, CC3, and CC4). That is, CC1, CC2, CC3, and CC4 may each correspond to a respective cell configured at the UE. Although the example of FIG. 3 illustrates a single CC being associated with a single cell, it is to be understood that a cell may correspond to one or multiple CCs. In the example of FIG. 3, CC1 and CC2 may correspond to intra-band contiguous CA carriers and CC1 and CC3 may correspond to intra-band non-contiguous CA carriers.

[0121] In some examples, one or more of the configured cells 324 may be inactive and one or more of the configured cells 324 may be active (e.g., non-dormant or active dormant). In the example of FIGG, CC4 corresponds to an inactive cell, while CC1, CC2, and CC3 correspond to active cells 326 (e.g., active non-dormant cell(s) and / or active dormant cell(s)). The UE may use the active cells 326 for wireless communication with a network node. Accordingly, the active cells 326 (CC1, CC2, and CC3) may be associated with active periods with or without uplink transmissions. Additionally, remaining cells of the configured cells 324 (e.g., CC4) may be associated with inactive periods.

[0122] In accordance with the enhanced MPR and power boost framework of the present disclosure, the UE may determine at least one period for time overlapping uplink transmissions among the active cells 326. In the example of FIG. 3, a first duration 302 may include a first period 310, a second period 311, and a third period 312, which overlap in time. The first period 310 corresponds to one or more time-domain resources over which CC1 is configured for (e.g., may be used for) uplink transmissions. That is, the first period 310 correspond to an active period with uplink transmission(s) for a first active cell (CC1) of the active cells 326. The second period 311 corresponds to one or more time-domain resources over which CC2 is configured for (e.g., may be used for) uplink transmissions. That is, thesecond period 311 correspond to an active period with uplink transmission(s) for a second active cell (CC2) of the active cells 326. The third period 312 corresponds to one or more time-domain resources over which CC3 is not configured for (e.g., is not used for) uplink transmissions. That is, the third period 312 correspond to an active period without uplink transmission(s) for a third active cell (CC3) of the active cells 326. Accordingly, based on the first period 310 and the second period 311 corresponding to active periods with uplink transmission(s), and the third period 312 corresponding to active periods without uplink transmissions, the UE may determine that (at least a portion of) the first duration 302 includes a period for time overlapping uplink transmissions among the active cells 326. That is, the UE may determine that a subset of the active cells 326 (CC1 and CC2) are configured for overlapping uplink transmissions and, as such, may determine that (at least a portion of) the first duration 302 includes a period for time overlapping uplink transmissions among the subset (CC1 and CC2). The UE may also determine that the period for time overlapping uplink transmission among the subset is non-overlapping with uplink transmission configured for remaining active cells (e.g., CC3).

[0123] In accordance with the enhanced MPR and power boost framework of the present disclosure, the UE may determine a first MPR for (at least) a portion of the duration that includes the first period 310 and the second period 311 based on CC1 and CC2 and / or the portion of the duration. That is, the UE may determine the first MPR based on the active (or active non-dormant) cells with time-overlapping UL transmissions and / or the period (or portion(s) or function of the period) of the time overlapping UL transmissions. In some examples, the first MPR may be an intra-band contiguous CA MPR. That is, the UE may determine to use, during at least the portion of the first duration 302, an intra-band contiguous CA MPR that is based on CC1 and CC2 and / or the portion of the first duration 302 that includes the first period 310 and the second period 311. The UE may transmit the at least one uplink transmission via CC1 and CC2 during the first period 310 and the second period 311 (which are overlapping in time) in accordance with one or more power control parameters that are based on the first MPR (e.g., the MPR determined based on CC1 and CC2). As illustrated in the example of FIG. 3, a type of period associated with a cell may be the same throughout a duration. In some other examples, the type of period may change throughout a duration.

[0124] In the example of FIG. 3, a second duration 304 may include a fourth period 313, a fifth period 314, and a sixth period 315, which overlap in time. The fourth period 313 corresponds to one or more time-domain resources over which CC1 is configured for (e.g.,may be used for) uplink transmissions. That is, the fourth period 313 correspond to an active period with uplink transmission(s) for the first active cell (CC1) of the active cells 326. The fifth period 314 corresponds to one or more time-domain resources over which CC2 is not configured for (e.g., is not used for) uplink transmissions. That is, the fifth period 314 correspond to an active period without uplink transmission(s) for the second active cell (CC2) of the active cells 326. The sixth period 315 corresponds to one or more time-domain resources over which CC3 is not configured for (e.g., is not used for) uplink transmissions. That is, the sixth period 315 correspond to an active period without uplink transmission(s) for the third active cell (CC3) of the active cells 326. Based on the fourth period 313 corresponding to an active period with uplink transmission(s) and the fifth period 314 and the sixth period 315 corresponding to an active period without uplink transmission(s), the UE may determine that the portion of the second duration 304 including the fourth period 313, the fifth period 314, and the sixth period 315 corresponds to a period for time nonoverlapping uplink transmission(s) among the active cells 326. In other words, the UE may determine that the fourth period 313, the fifth period 314, and the sixth period 315 include at least one time domain resource for at least one uplink transmission via a subset (CC1) of the active cells 326, which is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell (CC2 and CC3) of the active cells 326. In accordance with the enhanced MPR and power boost framework of the present disclosure, the UE may determine a second MPR for (at least) the portion of the duration that includes the fourth period 313, the fifth period 314, and the sixth period 315 based on CC1 and / or the fourth period 313. That is, the UE may determine the second MPR based on a single active cell (or active non-dormant cell) with time non-overlapping UL transmission(s) among active cells 326 (e.g., among all UL active cells) and / or the period (or portion(s) or function of the period) of the time non-overlapping UL transmission(s). In some examples, the second MPR may include a single carrier MPR. For example, the UE may determine to use a single carrier MPR based on the portion of the duration including time non-overlapping uplink transmission(s) among the active cells 326. The UE may transmit the at least one uplink transmission via CC1 during the fourth period 313 in accordance with one or more power control parameters that are based on the second MPR (e.g., the MPR determined based on CC1 and / or the fourth period 313).

[0125] In the example of FIG. 3, a third duration 306 may include a seventh period 316, an eighth period 317, and a ninth period 318, which overlap in time. The seventh period 316 corresponds to one or more time-domain resources over which CC1 is not configured for(e.g., is not used for) uplink transmissions. That is, the seventh period 316 correspond to an active period without uplink transmission(s) for the first active cell (CC1) of the active cells 326. The eighth period 317 corresponds to one or more time-domain resources over which CC2 is configured for (e.g., may be used for) uplink transmissions. That is, the eighth period 317 correspond to an active period with uplink transmission(s) for the second active cell (CC2) of the active cells 326. The ninth period 318 corresponds to one or more time-domain resources over which CC3 is configured for (e.g., may be used for) uplink transmissions. That is, the ninth period 318 correspond to an active period with uplink transmission(s) for the third active cell (CC3) of the active cells 326.

[0126] In some examples, based on the seventh period 316 corresponding to an active period without uplink transmission(s) and the eighth period 317 and the ninth period 318 corresponding to an active period with uplink transmission(s), the UE may determine that the portion of the third duration 306 including the seventh period 316, the eighth period 317, and the ninth period 318 corresponds to a period for time overlapping uplink transmissions among the active cells 326. That is, the UE may determine that a subset of the active cells 326 (CC2 and CC3) are configured for overlapping uplink transmissions and, as such, may determine that (at least a portion of) the third duration 306 includes a period for time overlapping uplink transmissions among the subset (CC2 and CC3). The UE may also determine that the period for time overlapping uplink transmission among the subset is nonoverlapping with uplink transmission configured for remaining active cells (e.g., CC1).

[0127] In accordance with the enhanced MPR and power boost framework of the present disclosure, the UE may determine a third MPR for (at least) a portion of the duration that includes the eighth period 317 and the ninth period 318 based on CC2 and CC3 and / or the portion of the duration. That is, the UE may determine the third MPR based on the active (or active non-dormant) cells with time-overlapping UL transmissions and / or the period (or portion(s) or function of the period) of the time overlapping UL transmissions. In some examples, to determine the third MPR, the UE may determine a common MPR and / or a respective MPR per cell (e.g., an MPR for CC2 and another MPR for C3). In some such examples, the UE may determine one common MPR for CC2 and CC3 based on the respective MPR per cell. For example, the UE may use a highest (e.g., maximum) MPR among the MPR determined for CC2 and the MPR determined for CC3. The UE may determine to use a common MPR for CC2 and CC3 based on CC2 and CC3 sharing the same power amplifier.

[0128] In some examples, the third MPR may be an intra-band non-contiguous CA MPR. That is, the UE may determine to use, during at least the portion of the third duration 306, an intra-band non-contiguous CA MPR that is based on CC2 and CC3 and / or the portion of the third duration 306 that includes the eighth period 317 and the ninth period 318. The UE may transmit the at least one uplink transmission via CC1 and CC2 during the eighth period 317 and the ninth period 318 (which are overlapping in time) in accordance with one or more power control parameters that are based on the third MPR (e.g., the MPR determined based on CC2 and CC3). In some examples, the first MPR and the third MPR include a same multicarrier MPR. In some other examples, the first MPR and the third MPR include different multi-carrier MPRs.

[0129] In the example of FIG. 3, a fourth duration 308 may include a tenth period 319, an eleventh period 320, and a twelfth period 321, which overlap in time. The tenth period 319 corresponds to one or more time-domain resources over which CC1 is not configured for (e.g., is not used for) uplink transmissions. That is, the tenth period 319 correspond to an active period without uplink transmission(s) for the first active cell (CC1) of the active cells 326. The eleventh period 320 corresponds to one or more time-domain resources over which CC2 is configured for (e.g., may be used for) uplink transmissions. That is, the eleventh period 320 correspond to an active period with uplink transmission(s) for the second active cell (CC2) of the active cells 326. The twelfth period 321 corresponds to one or more timedomain resources over which CC3 is not configured for (e.g., is not used for) uplink transmissions. That is, the twelfth period 321 correspond to an active period without uplink transmission(s) for the third active cell (CC3) of the active cells 326. Based on the tenth period 319 and the twelfth period 321 corresponding to active periods without uplink transmission(s) and the eleventh period 320 corresponding to an active period with uplink transmission(s), the UE may determine that the portion of the fourth duration 308 including the tenth period 319, the eleventh period 320, and the twelfth period 321 corresponds to a period for time non-overlapping uplink transmission(s) among the active cells 326. In other words, the UE may determine that the tenth period 319, the eleventh period 320, and the twelfth period 321 include at least one time domain resource for at least one uplink transmission via a subset (CC2) of the active cells 326, which is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell (CC1 and CC3) of the active cells 326. In accordance with the enhanced MPR and power boost framework of the present disclosure, the UE may determine a fourth MPR for (at least) the portion of the duration that includes the tenth period 319, the eleventh period 320,and the twelfth period 321 based on CC2 and / or the eleventh period 320. That is, the UE may determine the fourth MPR based on a single active cell (or active non-dormant cell) with time non-overlapping UL transmission(s) among active cells 326 (e.g., among all UL active cells) and / or the period (or portion(s) or function of the period) of the time non-overlapping UL transmission(s). In some examples, the fourth MPR may include a single carrier MPR. For example, the UE may determine to use a single carrier MPR based on the portion of the duration including time non-overlapping uplink transmission(s) among the active cells 326. The UE may transmit the at least one uplink transmission via CC2 during the eleventh period 320 in accordance with one or more power control parameters that are based on the fourth MPR (e.g., the MPR determined based on CC2 and / or the eleventh period 320). In some examples, the second MPR and the fourth MPR include a same single carrier MPR. In some other examples, the second MPR and the fourth MPR include different single carrier MPRs.

[0130] In the example of FIG. 3, the UE may determine an MPR (or power amplifier backoff) at least partially based on the active cells associated in the time-overlapping period. The MPR may correspond to a contiguous / non-contiguous intra-band with contiguous / non- contiguous resource blocks or may correspond to inter-band CA carriers sharing the same power amplifier or may correspond to dual connectivity. For example, in the case of 2 timeoverlapping UL transmissions between 2 cells among N active cells, the MPR may be based on the 2 cells associated with the time overlapping period.

[0131] FIG. 4 illustrates an example signaling diagram to which one or more examples disclosed herein may be applied. The signalling flow diagram of FIG. 4 illustrates operations performed, such as within the system of FIG. 1, by the UE 120 and the network node 110 in accordance with one or more aspects of the present disclosure. One or more operations performed at the UE 120 and the network node 110 may be performed in a different order than the example order shown. Additionally, or alternatively, one or more operations performed at the UE 120 and the network node 110 may be omitted and / or one or more other operations may be added. In the example of FIG. 4, the network node 110 may represent one or more gNBs or cells. In some examples, the UE 120 may be configured to determine one or more MPRs (or, more specifically, the power amplifier power backoff power reduction to be applied by the UE 120), an uplink maximum power per active serving cell (PCMAX .C)’ and / or a total maximum power (PCMAX)atleast partially based on a single active cell (or active nondormant cell) with time non-overlapping uplink transmission(s) among active cells (e.g., alluplink active cells) and / or the period (or portion(s) or function of the period) of the time nonoverlapping UL transmission(s).

[0132] In some examples, at 412, the UE 120 may transmit an indication of one or more UE capabilities to the network node 110. For example, the UE may transmit an indication of a transmission diversity capability, a power boost capability, and / or a capability for MPR adaptation, among other examples,

[0133] In some examples, at 414, the UE 120 may receive first configuration from the network node 110. The first configuration information may include a dynamic or semi-static configuration associated with MPR adaptation with multiple active CCs. For example, the first configuration information may indicate for the UE 120 to enable or disable MPR adaptation. Additionally, or alternatively, the first configuration information may indicate a transmit power, an MPR threshold, a PCMAX threshold, and / or a time domain threshold (e.g., a time related threshold).

[0134] At 416, the UE 120 may receive second configuration information from the network node 110. The second configuration information may include an uplink configuration and / or uplink grant. For example, the second configuration information may include an indication of one or more uplink resources, such as one or more time and / or frequency domain resources, for one or more uplink transmissions. Additionally, or alternatively, the second configuration information may include assistance information for the UE 120.

[0135] At 418, the UE 120 may determine one or more time non-overlapping periods among active uplink cells (e.g., all active uplink cells) sharing a same one or more power amplifiers. That is, the UE 120 may determine a duration over which at least one time domain resource for at least one uplink transmission via a subset of a set of active cells (e.g., one or more of the set of active cells) is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells.

[0136] At 420, the UE 120 may determine to use a single carrier MPR for the one or more time non-overlapping periods. That is, the UE 120 may determine to use single carrier MPR for the time non-overlapping uplink transmission among multiple active uplink cells. For example, the subset may include a single active cell of the set of active cells and the at least one time domain resource may be non-overlapping with a respective time domain resource for uplink transmissions via each remaining cell of the set of active cells. In such an example, the UE 120 may determine to use the single carrier MPR based on the subsetincluding the single active cell. In some examples, the UE 120 may determine to use (or not use) the single carrier MPR based on one or more thresholds and / or based on one or more features of one or more capabilities at the UE 120 being enabled (e.g., based on whether MPR adaptation is enabled at the UE 120).

[0137] At 422, the UE 120 may transmit the time non-overlapping uplink transmission, during the one or more time non-overlapping periods, based on one or more power control parameters (e.g., Pc MAX)aiKl the single carrier MPR.

[0138] In some examples, at 424, the UE 120 may transmit a power control indication to the network node 110. For example, the UE 120 may transmit an indication of the determined MPR (e.g., the single carrier MPR) and / or one or more power control parameters, such as PCMAX, which may be determined based on the MPR. In some examples, the UE may transmit the power control indication via a power headroom report.

[0139] FIG. 5 illustrates an example signaling diagram to which one or more examples disclosed herein may be applied. The signalling flow diagram of FIG. 5 illustrates operations performed, such as within the system of FIG. 1, by the UE 120 and the network node 110 in accordance with one or more aspects of the present disclosure. One or more operations performed at the UE 120 and the network node 110 may be performed in a different order than the example order shown. Additionally, or alternatively, one or more operations performed at the UE 120 and the network node 110 may be omitted and / or one or more other operations may be added. In the example of FIG. 5, the network node 110 may represent one or more gNBs or cells. In some examples, the UE 120 may be configured to determine one or more MPRs (or, more specifically, the power amplifier power backoff power reduction to be applied by the UE 120), an uplink maximum power per active serving cell (PCMAX, ,C)' and / or a total maximum power (PCMAX)atleast partially based on active (or active non-dormant) cells with time-overlapping uplink transmissions and / or the period (or portion(s) or function of the period) of the time overlapping UL transmissions.

[0140] In some examples, at 512, the UE 120 may transmit an indication of one or more UE capabilities to the network node 110. For example, the UE may transmit an indication of a transmission diversity capability, a power boost capability, and / or a capability for MPR adaptation, among other examples,

[0141] In some examples, at 514, the UE 120 may receive first configuration from the network node 110. The first configuration information may include a dynamic or semi-static configuration associated with MPR adaptation with multiple active CCs. For example, thefirst configuration information may indicate for the UE 120 to enable or disable MPR adaptation. Additionally, or alternatively, the first configuration information may indicate a transmit power, an MPR threshold, a PCMAX threshold, and / or a time domain threshold (e.g., a time related threshold).

[0142] At 516, the UE 120 may receive second configuration information from the network node 110. The second configuration information may include an uplink configuration and / or uplink grant. For example, the second configuration information may include an indication of one or more uplink resources, such as one or more time and / or frequency domain resources, for one or more uplink transmissions. Additionally, or alternatively, the second configuration information may include assistance information for the UE 120.

[0143] At 518, the UE 120 may determine active cells associated in one or more time overlapping periods among active uplink cells (e.g., all active uplink cells) that share a same one or more power amplifiers. For example, the UE may determine a subset of a set of active cells, in which the subset of active cells is configured for at least one uplink transmission via at least one time domain resource that is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells. In such an example, the subset of active cells may be associated with the at least one time domain resource (e.g., may be configured for one or more uplink transmissions via the same one or more time domain resources). In other words, the subset of active cells may be associated in one or more time overlapping periods.

[0144] At 520, the UE 120 may determine to use an MPR for the one or more time overlapping periods based on the active cells associated in the one or more time overlapping periods. In other words, the UE 120 may determine to use an MPR for the one or more time overlapping periods based on the subset of active cells. In some examples, the UE 120 may determine to use (or not use) the MPR based on one or more thresholds and / or based on one or more features of one or more capabilities at the UE 120 being enabled (e.g., based on whether MPR adaptation is enabled at the UE 120).

[0145] At 522, the UE 120 may transmit the time overlapping uplink transmission, during the one or more time overlapping periods, based on one or more power control parameters (e.g., PCMAX) and the MPR.

[0146] In some examples, at 524, the UE 120 may transmit a power control indication to the network node 110. For example, the UE 120 may transmit an indication of the determined MPR and / or one or more power control parameters, such as PCMAX- which may be determinedbased on the MPR. In some examples, the UE may transmit the power control indication via a power headroom report.

[0147] FIG. 6 illustrates an example signaling diagram to which one or more examples disclosed herein may be applied. The signalling flow diagram of FIG. 6 illustrates operations performed, such as within the system of FIG. 1, by the UE 120 and the network node 110 in accordance with one or more aspects of the present disclosure. One or more operations performed at the UE 120 and the network node 110 may be performed in a different order than the example order shown. Additionally, or alternatively, one or more operations performed at the UE 120 and the network node 110 may be omitted and / or one or more other operations may be added. In the example of FIG. 6, the network node 110 may represent one or more gNBs or cells. In some examples, the UE 120 may be configured to determine one or more MPRs (e.g., the power amplifier power backoff power reduction to be applied by the UE 120), an uplink maximum power per active serving cell (PCMAX .C)’ and / or a total maximum power (PCMAX) based on a subset of cells. The subset of cells may include a single active cell (or active non-dormant cell) with time non-overlapping uplink transmission(s) among uplink active cells or multiple active (or active non-dormant) cells with time overlapping uplink transmission(s).

[0148] As 612, the UE 120 may identify a set of active cells. For example, the UE may obtain information that is indicative of activation of a set of cells. In some examples, the UE may receive the information from the network (e.g., via a MAC CE, downlink control information (DCI), or RRC signaling). Additionally, or alternatively the UE may determine the information (at least partially) at the UE, for example, based on one or more rules, conditions, and / or configurations at the UE. The set of active cells may include a single active cell, or multiple active cells.

[0149] At 614, the UE 120 may determine a duration over which at least one time domain resource for at least one uplink transmission via a subset of the set of active cells is nonoverlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells. For example, the UE 120 may determine one or more time non-overlapping period(s) and / or one or more time overlapping period(s) among the set of active uplink cells.

[0150] At 616, the UE 120 may determine at least one MPR based on the subset. For example, the UE 120 may determine a single carrier MPR or a multi-carrier MPR based on the subset.

[0151] At 618, the UE 120 may transmit the at least one uplink transmission during at least a portion of the duration in accordance with one or more power control parameters that are based on the at least one MPR. In some examples, the at least one MPR is based on the at least one time domain resource including a quantity of time domain resources that satisfies a time domain threshold. For example, the UE 120 may determine to use the at least one MPR and / or a power amplifier backoff if at least one determined period (e.g., the at least one time domain resource) is greater than or equal to a pre-defined threshold (e.g. X slots, mini-slots, symbols, subframes). Additionally, or alternatively, the at least one MPR may be based on a difference between the at least one MPR and a second MPR satisfying an MPR threshold. The second MPR may be a previously determined (e.g., current) MPR. That is, the second MPR may be associated with a second time domain resource for a second uplink transmission, in which the second time domain resource precedes the at least one time domain resource. In other words, the UE 120 may determine to use the at least one MPR and / or a power amplifier backoff if the difference between the determined MPR (or power amplifier backoff) and a current MPR (or power amplifier backoff) satisfies a threshold. In some examples, the difference may satisfy the threshold if the difference is greater than, smaller than, or equal to the threshold (e.g., 1 dB). In some examples, the UE 120 may receive control information indicative of the time domain threshold or the MPR threshold. For example, time or power related threshold(s) may be configured by the network (or predefined at the UE 120).

[0152] In some examples, the UE 120 may indicate at least one indicative information of the uplink power per at least one active cell. For example, the UE 120 may determine at least one transmit power for the at least one uplink transmission based on the one or more power control parameters and may transmit an indication of the at least one transmit power to the network node 110. In some examples, the indicative information is implicitly within PcMAX.f.c Peractive serving cell when, for example, a power headroom report (including the indicative information) is transmitted based on a real transmission within the determined time non-overlapping period. In some examples, the indicative information includes a bit in a bitfield. For example, one bit field (e.g., reserved bits or repurposed bits) may be used in a power headroom report MAC-CE to indicate (i) that the MPR / power amplifier backoff is based on one or more time non-overlapping periods or one or more time overlapping periods and / or (ii) the active cell(s) within the subset. For example, the bit field may indicate the multiple active cells with overlapping uplink transmissions in the overlapping period(s)and / or the single active cell with the non-overlapping uplink transmission. In some examples, the indicative information may be included in a power headroom field. Additionally, or alternatively, the indicative information may be reported (explicitly) in a power headroom report MAC-CE (e.g., in a DPC (delta power class) field “DPC_BC”). In some examples, the indicative information for a cell may be included in multiple (e.g., separate) power headroom report MAC-CEs or jointly in the same power headroom report MAC-CE (e.g., along with PCMAX and with or without one or more other fields based on uplink active cells without time non-overlapping or time overlapping consideration).

[0153] The UE 120 may trigger a power headroom report, for example, if the MPR, PcMAX,f,c and / or power headroom is updated at least partially based on time non-overlapping uplink transmission. Additionally, or alternatively, the UE 120 may trigger a power headroom report if the update (e.g., PCMAX. .CorAMPR) is changed by more than predefined threshold (e.g., X dB). For example, the UE 120 may transmit a power headroom report based on a difference between the at least one MPR and a second MPR satisfying a threshold. The second MPR may be associated with a second time domain resource for a second uplink transmission in which the second time domain resource precedes the at least one time domain resource. That is, the second MPR may be a current or previously determined MPR for the subset.

[0154] In some examples, the UE 120 may indicate, to the network node 110, a capability for MPR adaptation with multiple active cells based on a time non-overlapping transmission and / or based on time overlapping transmissions. That is, the UE 120 may transmit, to the network node 110, an indication of a capability for MPR adaptation, which is used to determine the at least one MPR. In some such examples, the network node may configure the UE 120 (or the UE 120 may be otherwise specified) to enable or disable MPR adaptation based on time-non-overlapping transmissions or time non-overlapping transmissions. That is, the UE 120 may (autonomously) determine to enable or disable the MPR adaptation based on the duration or the UE 120 may receive control information from the network node 110 indicating, to the UE 120, to enable or disable the MPR adaptation.

[0155] In some examples, the network node 110 may configure the UE 120 (or the UE 120 may be otherwise specified) to omit a power boost or determined MPR based on a time non-overlapping transmission and / or based on time overlapping transmissions. For example, the UE 120 may be configured to omit the power boost or determined MPR if, for example, the UE 120 cannot maintain the power boost or determined MPR during the time non-overlapping transmission and / or time overlapping transmissions (e.g., during a full uplink transmission, which may include one or more mini-slots, slots, symbols, or subframes). That is, in some examples, the UE 120 may identify a lack of a capability to maintain power boosting over at least the portion of the duration. In some such examples, the UE may determine to omit a power boost or to apply the at least one MPR based on the lack of the capability. In some examples, a PUSCH transmission may be granted and may be at least partially within a time non-overlapping period. Such a PUSCH transmission may include a slot or multi-slot transmission, such as a transport block processing over multi-slot PUSCH (TBoMS) or repetition with DMRS bundling. In some such examples, the UE may determine (e.g., know or expect) that the PUSCH transmission is partially overlapping with another uplink transmission for which power amplifier backoff adaptation is used. Accordingly, the UE may determine to use an MPR based on active cells (e.g., all active cells) and omit the determined dynamic MPR, which is based on the active cells with time non-overlapping and / or time overlapping transmissions.

[0156] In some examples, to determine the duration (e.g., at least one period with a time non-overlapping uplink transmission), the UE 120 may consider a time constraint used at the UE 120 to switch from applying a multi-carrier MPR to a single-carrier MPR. Similarly, the UE 120 may use the same (or a different) time constraint for switching from the single-carrier MPR to the multi-carrier MPR. For example, the time constraint may include a first time period based on the at least one MPR including a single carrier MPR or the time period may include a second period based on the at least one MPR including a multi-carrier MPR. In some examples, a timing constraint (e.g., a minimum required switching time) may correspond to or may be represented as a transient period. In some examples, the UE 120 may report the timing constraint and / or one or more parameter related to the time non-overlapping periods to the network node 110. For example, the UE 120 may determine a time period associated with switching from a second MPR to the at least one MPR and may transmit information indicative of the time period to the network node 110.

[0157] FIG. 7 illustrates an example flowchart 700 of a method to which one or more examples disclosed herein may be applied. The method may be computer-implemented. The method may be performed by a UE, such as a UE illustrated by and described with reference to FIGs. 1-6.

[0158] As shown in FIG. 7, the UE at block 710 identifies a set of active cells. For example, the UE may include the means (e.g., a processor 12, a memory 14) for identifying a set of active cells.

[0159] As shown in FIG. 7, the UE at block 712 determines a duration over which at least one time domain resource for at least one uplink transmission via a subset of the set of active cells is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells. For example, the UE may include the means (e.g., a processor 12, a memory 14) for determining a duration over which at least one time domain resource for at least one uplink transmission via a subset of the set of active cells is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells.

[0160] As shown in FIG. 7, the UE in block 714 determines at least one maximum power reduction (MPR) based at least in part on the subset. For example, the UE may include the means (e.g., a processor 12, a memory 14) for determining at least one maximum power reduction (MPR) based at least in part on the subset.

[0161] As shown in FIG. 7, the UE in block 716 transmits the at least one transmission during at least a portion of the duration in accordance with one or more power control parameters that are based at least in part on the at least one MPR. For example, the UE may include the means (e.g., a processor 12, a memory 14, a radio interface 16) for transmitting the at least one transmission during at least a portion of the duration in accordance with one or more power control parameters that are based at least in part on the at least one MPR.

[0162] FIG. 8 illustrates an example flowchart 800 of a method to which one or more examples disclosed herein may be applied. The method may be computer-implemented. The method may be performed by a network node (also referred to herein as a network entity), such as a network node illustrated by and described with reference to FIGs. 1-6.

[0163] As shown in FIG. 8, the network node at block 810 transmits first control information associated with a set of active cells. For example, the network node may include the means (e.g., a processor 12, a memory 14, a radio interface 16) for transmitting first control information associated with a set of active cells. The first control information may be an example of the second configuration information illustrated by and described with reference to FIGs. 4 and 5.

[0164] As shown in FIG. 8, the network node at block 812 receive, during at least a portion of a duration and in accordance with one or more power control parameters, at least one uplink transmission via a subset of the set of active cells, wherein the duration comprises at least one time domain resource for the at least one uplink transmission, wherein the at least one time domain resource is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells, andwherein the one or more power control parameters are based at least in part on at least one maximum power reduction (MPR) associated with the subset. For example, the network node may include the means (e.g., a processor 12, a memory 14, a radio interface 16) for receiving, during at least a portion of a duration and in accordance with one or more power control parameters, at least one uplink transmission via a subset of the set of active cells, wherein the duration comprises at least one time domain resource for the at least one uplink transmission, wherein the at least one time domain resource is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells, and wherein the one or more power control parameters are based at least in part on at least one maximum power reduction (MPR) associated with the subset.

[0165] FIG. 9 shows, by way of example, a block diagram of an apparatus 10. The apparatus 10 comprises, for example, at least one processor 12 and at least one memory 14 storing instructions 15 that, when executed by the at least one processor, cause the apparatus 10 at least to perform the method or methods as disclosed herein, and at least some of the embodiments thereof. In an example, the at least one memory and the instructions (e.g. a computer program code, software), are configured, with the at least one processor, to cause the apparatus 10 to perform the method or methods as disclosed herein, and at least some of the embodiments thereof.

[0166] A processor 12 may comprise circuitry, or be constituted as circuitry or circuitries, the circuitry or circuitries being configured to perform phases of methods in accordance with at least some example embodiments described herein. As used in this application, the term “circuitry” may refer to one or more or all of the following: (a) hardware-only circuit implementations, such as implementations in only analog and / or digital circuitry, and (b) combinations of hardware circuits and software, such as, as applicable: (i) a combination of analog and / or digital hardware circuit(s) with software / firmware and (ii) any portions of hardware processor(s) with software (including digital signal processor(s)), software, and memory(ies) that work together to cause an apparatus, such as a user equipment, to perform various functions) and (c) hardware circuit(s) and / or processor(s), such as a microprocessor(s) or a portion of a microprocessor(s), that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation. This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware.The term circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.

[0167] The memory 14 may be implemented using any suitable data storage technology. The memory may comprise a database for storing data. The memory 14 may be at least in part external to apparatus 10 but accessible to apparatus 10.

[0168] The instructions 15 may be comprised in a computer readable medium or a non- transitory computer readable medium. A term non-transitory, as used herein, is a limitation of the medium itself (e.g., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g. random access memory, RAM, vs. read only memory, ROM).

[0169] For example, the apparatus 10 is a terminal device, such as the UE of FIGs. 1-6. As another example, the apparatus is comprised in such a terminal device, e.g. as a chipset configured to control the terminal device. The apparatus 10 may be caused or configured to perform at least the method of FIG. 7 and / or any one or more of the embodiments described.

[0170] As another example, the apparatus 10 is a network node, e.g. the network node of FIGs. 1-6. In at least another embodiment, the apparatus is comprised in such a network node, e.g. as a chipset configured to control the network node. The apparatus 10 may be caused or configured to perform at least the method of FIG. 8 and / or any one or more of the embodiments described.

[0171] The apparatus may comprise one or more entities of any of protocol layers, such as a MAC entity, an RRC entity, an REC entity, a PDCP entity or a PHY entity. In at least some embodiments, the entity is configured to perform at least the method of FIG. 7 or FIG. 8, and / or any one or more of the embodiments described.

[0172] The apparatus 10 comprises a radio interface 16. The radio interface 16 may provide the apparatus 10 with communication capabilities. The radio interface 16 may comprise a receiver configured to receive information in accordance with at least one cellular or non-cellular standard. The radio interface 16 may comprise a transmitter configured to transmit information in accordance with at least one cellular or non-cellular standard. The receiver may comprise more than one receiver. The transmitter may comprise more than one transmitter. The radio interface 16 may comprise a transceiver configured to receive and transmit information in accordance with at least one cellular or non-cellular standard. The transceiver may comprise more than one transceiver.

[0173] The apparatus 10 may comprise a user interface 18 comprising, for example, at least one of a keypad, a microphone, a touch display, a display, a speaker, etc. The userinterface 18 may be used to control the apparatus by the user. The user interface 18 may be external to the apparatus 10. For example, the apparatus 10 may be connected to another device, such as a computer, either via wireless or wired connection, and the apparatus 10 is controlled by the user via the computer.

[0174] In at least some embodiments, at least some of the processes described herein may be carried out by an apparatus comprising means for carrying out at least some of the described processes. Means for performing method steps as disclosed herein may include software and / or hardware components of the apparatus 10. For example, the at least one processor 12, the memory 14, and the computer program code form means for carrying out the method or methods as disclosed herein, and any of the embodiments thereof. As used herein the term “means” is to be construed in singular form, in other words referring to a single element, or in plural form, in other words referring to a combination of single elements. Therefore, terminology “means for [performing A, B, C]”, is to be interpreted to cover an apparatus in which there is only one means for performing A, B and C, or where there are separate means for performing A, B and C, or partially or fully overlapping means for performing A, B, C. Further, terminology “means for performing A, means for performing B, means for performing C” is to be interpreted to cover an apparatus in which there is only one means for performing A, B and C, or where there are separate means for performing A, B and C, or partially or fully overlapping means for performing A, B, C.

[0175] Even though the present disclosure has been described above with reference to an example according to the accompanying drawings, it is clear that the present disclosure is not restricted thereto but can be modified in several ways within the scope of the appended claims. Therefore, all words and expressions should be interpreted broadly and they are intended to illustrate, not to restrict, the embodiment. It will be obvious to a person skilled in the art that, as technology advances, the inventive concept can be implemented in various ways. Further, it is clear to a person skilled in the art that the described embodiments may, but are not required to, be combined with other embodiments in various ways.

Claims

What is claimed is:

1. An apparatus, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: identify a set of active cells; determine a duration over which at least one time domain resource for at least one uplink transmission via a subset of the set of active cells is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells; determine at least one maximum power reduction (MPR) based at least in part on the subset; and transmit the at least one uplink transmission during at least a portion of the duration in accordance with one or more power control parameters that are based at least in part on the at least one MPR.

2. An apparatus according to claim 1, wherein the one or more power control parameters comprise at least one of: a power amplifier power backoff power reduction associated with the subset, a maximum power associated with at least one active cell of the subset, a maximum power associated with uplink transmissions at the apparatus, or a power headroom associated with the apparatus.

3. An apparatus according to claim 1 or 2, wherein the at least one MPR is based at least in part on the duration.

4. An apparatus according to any one of claims 1-3, wherein the subset comprises a single active cell of the set of active cells, and wherein the at least one time domain resource is non-overlapping with a respective time domain resource for uplink transmissions via each remaining cell of the set of active cells.

5. An apparatus according to claim 4, wherein the at least one MPR comprises at least a single carrier MPR based at least in part on the subset comprising the single active cell.

6. An apparatus according to claim 1, wherein the subset comprises a plurality of active cells of the set of active cells, and wherein the at least one time domain resource is for a respective uplink transmission via each cell of the subset.

7. An apparatus according to any one of claims 1-6, wherein the at least one MPR is based at least in part on at least one of the following: one or more resource blocks associated with one or more cells of the subset, a duplexing mode associated with the at least one uplink transmission, a type of carrier aggregation associated with the at least one uplink transmission, at least one bandwidth class associated with the subset, a waveform modulation scheme associated with the at least one uplink transmission, a quantity of cells included in the subset, a power class associated with the apparatus, a power amplifier architecture associated with the apparatus, a transmission diversity capability associated with the apparatus, at least one power boost capability associated with the apparatus, an uplink duty cycle associated with the apparatus, one or more operating bands associated with the subset, a band combination associated with the subset, or an aggregated bandwidth associated with the subset.

8. An apparatus according to claim 7, wherein the duplexing mode comprises frequency division duplexing or time division duplexing, and wherein the type of carrier aggregation comprises inter-band carrier aggregation, intra-band non-contiguous carrier aggregation, intra-band contiguous carrier aggregation, or dual connectivity.

9. An apparatus according to any one of claims 1-8, wherein the at least one MPR is based at least in part on the at least one time domain resource comprising a quantity of time domain resources that satisfies a time domain threshold.

10. An apparatus according to any one of claims 1-9, wherein the at least one MPR is based at least in part on a difference between the at least one MPR and a second MPR satisfying an MPR threshold, wherein the second MPR is associated with a second time domain resource for a second uplink transmission, and wherein the second time domain resource precedes the at least one time domain resource.

11. An apparatus according to any one of claims 1-10, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: receive control information indicative of a time domain threshold or an MPR threshold, wherein the at least one MPR is based at least in part on the time domain threshold or the MPR threshold.

12. An apparatus according to any one of claims 1-11, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: determine at least one transmit power for the at least one uplink transmission based at least in part on the one or more power control parameters; and transmit an indication of the at least one transmit power.

13. An apparatus according to any one of claims 1-12, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: transmit a power headroom report based at least in part on a difference between the at least one MPR and a second MPR, wherein the second MPR is associated with a second time domain resource for a second uplink transmission, and wherein the second time domain resource precedes the at least one time domain resource.

14. An apparatus according to claim 13, wherein transmitting the power headroom report is based at least in part on the difference satisfying a threshold.

15. An apparatus according to any one of claims 1-14, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: transmit an indication of a capability for MPR adaptation, wherein determining the at least one MPR is based at least in part on the capability.

16. An apparatus according to claim 15, wherein the capability is for MPR adaptation with multiple active cells associated with overlapping transmissions or nonoverlapping transmissions in the time domain.

17. An apparatus according to claim 15 or 16, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: determine to enable or disable the MPR adaptation based at least in part on the duration, wherein the at least one MPR is based at least in part on the determination to enable or disable the MPR adaptation.

18. An apparatus according to claim 17, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: receive control information indicating, to the apparatus, to enable or disable the MPR adaptation, wherein determining to enable or disable the MPR adaptation is in accordance with the control information.

19. An apparatus according to any one of claims 1-18, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: identify a lack of a capability to maintain power boosting over at least the portion of the duration; and determine to omit a power boost or apply the at least one MPR based at least in part on the lack of the capability.

20. An apparatus according to any one of claims 1-19, wherein the at least one MPR comprises a first MPR, and wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: determine a time period associated with switching from a second MPR to the first MPR; and transmit control information indicative of the time period.

21. An apparatus according to claim 20, wherein the time period is associated with the at least one uplink transmission, and wherein the control information comprises an indication of the time period or one or more parameters associated with the at least one uplink transmission.

22. An apparatus according to claim 20 or 21, wherein the time period comprises a first time period based at least in part on the first MPR comprising a single carrier MPR or the time period comprises a second period based at least in part on the first MPR comprising a multi-carrier MPR.

23. An apparatus according to any one of claims 1-22, wherein the set of active cells are associated with a same one or more power amplifiers.

24. An apparatus according to any one of claims 1-23, wherein the set of active cells comprises one or more component carriers configured at the apparatus for wireless communication in accordance with at least one of: a carrier aggregation configuration, a multi-carrier single cell configuration, a dual connectivity configuration, or a dual stack configuration.

25. An apparatus according to any one of claims 1-24, wherein the subset comprises one or more active non-dormant cells.

26. An apparatus according to any one of claims 1-25, wherein the set of active cells comprises at least one of the following: one or more serving cells, one or more carriers, one or more component carriers, or one or more bandwidth parts (BWPs).

27. An apparatus according to any one of claims 1-26, wherein the set of active cells comprises one or more secondary cells and a primary cell.

28. An apparatus according to claim 27, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: receive, from a network node, control information indicating activation of at least one secondary cell of the one or more secondary cells.

29. An apparatus, comprising: at least one processor; and at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to: transmit first control information associated with a set of active cells; andreceive, during at least a portion of a duration and in accordance with one or more power control parameters, at least one uplink transmission via a subset of the set of active cells, wherein the duration comprises at least one time domain resource for the at least one uplink transmission, wherein the at least one time domain resource is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells, and wherein the one or more power control parameters are based at least in part on at least one maximum power reduction (MPR) associated with the subset.

30. An apparatus according to claim 29, wherein the one or more power control parameters comprise at least one of: a power amplifier power backoff power reduction associated with the subset, a maximum power associated with at least one active cell of the subset, a maximum power associated with uplink transmissions from a user equipment (UE), or a power headroom associated with the UE.

31. An apparatus according to claim 29 or 30, wherein the at least one MPR is based at least in part on the duration.

32. An apparatus according to any one of claims 29-31, wherein the subset comprises a single active cell of the set of active cells, and wherein the at least one time domain resource is non-overlapping with a respective time domain resource for uplink transmissions via each remaining cell of the set of active cells.

33. An apparatus according to claim 32, wherein the at least one MPR comprises at least a single carrier MPR based at least in part on the subset comprising the single active cell.

34. An apparatus according to claim 29, wherein the subset comprises a plurality of active cells of the set of active cells, and wherein the at least one time domain resource is for a respective uplink transmission via each cell of the subset.

35. An apparatus according to any one of claims 29-34, wherein the at least one MPR is based at least in part on at least one of the following: one or more resource blocks associated with one or more cells of the subset, a duplexing mode associated with the at leastone uplink transmission, a type of carrier aggregation associated with the at least one uplink transmission, at least one bandwidth class associated with the subset, a waveform modulation scheme associated with the at least one uplink transmission, a quantity of cells included in the subset, a power class associated with the apparatus, a power amplifier architecture associated with the apparatus, a transmission diversity capability associated with the apparatus, at least one power boost capability associated with the apparatus, an uplink duty cycle associated with the apparatus, one or more operating bands associated with the subset, a band combination associated with the subset, or an aggregated bandwidth associated with the subset.

36. An apparatus according to claim 35, wherein the duplexing mode comprises frequency division duplexing or time division duplexing, and wherein the type of carrier aggregation comprises inter-band carrier aggregation, intra-band non-contiguous carrier aggregation, intra-band contiguous carrier aggregation, or dual connectivity.

37. An apparatus according to any one of claims 29-36, wherein the at least one MPR is based at least in part on the at least one time domain resource comprising a quantity of time domain resources that satisfies a time domain threshold.

38. An apparatus according to any one of claims 29-37, wherein the at least one MPR satisfies an MPR threshold.

39. An apparatus according to any one of claims 29-38, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: transmit second control information indicative of a time domain threshold or an MPR threshold, wherein the at least one MPR is based at least in part on the time domain threshold or the MPR threshold.

40. An apparatus according to any one of claims 29-39, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: receive an indication of at least one transmit power for the at least one uplink transmission, wherein the at least one transmit power is based at least in part on the one or more power control parameters.

41. An apparatus according to any one of claims 29-40, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: receive a power headroom report based at least in part on the at least one MPR satisfying a threshold.

42. An apparatus according to any one of claims 29-41, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: receive an indication of a capability for MPR adaptation, wherein the at least one MPR is based at least in part on the capability.

43. An apparatus according to claim 42, wherein the capability is for MPR adaptation with multiple active cells associated with overlapping transmissions or nonoverlapping transmissions in the time domain.

44. An apparatus according to claim 42 or 43, wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: transmit second control information indicating to enable or disable the MPR adaptation, wherein the at least one MPR is based at least in part on the second control information.

45. An apparatus according to any one of claims 29-44, wherein the at least one MPR comprises a first MPR, and wherein the at least one memory and the instructions, when executed by the at least one processor, cause the apparatus to: receive second control information indicative of a time period associated with switching from a second MPR to the first MPR.

46. An apparatus according to claim 45, wherein the time period is associated with the at least one uplink transmission, and wherein the second control information comprises an indication of the time period or one or more parameters associated with the at least one uplink transmission.

47. An apparatus according to claim 45 or 46, wherein the time period comprises a first time period based at least in part on the first MPR comprising a single carrier MPR or the time period comprises a second period based at least in part on the first MPR comprising a multi-carrier MPR.

48. An apparatus according to any one of claims 29-47, wherein the set of active cells are associated with a same one or more power amplifiers.

49. An apparatus according to any one of claims 29-48, wherein the set of active cells comprises one or more component carriers configured at the apparatus for wireless communication in accordance with at least one of: a carrier aggregation configuration, a multi-carrier single cell configuration, a dual connectivity configuration, or a dual stack configuration.

50. An apparatus according to any one of claims 29-49, wherein the subset comprises one or more active non-dormant cells.

51. An apparatus according to any one of claims 29-50, wherein the set of active cells comprises at least one of the following: one or more serving cells, one or more carriers, one or more component carriers, or one or more bandwidth parts (BWPs).

52. An apparatus according to any one of claims 29-51, wherein the set of active cells comprises one or more secondary cells and a primary cell.

53. A method, comprising: identifying a set of active cells; determining a duration over which at least one time domain resource for at least one uplink transmission via a subset of the set of active cells is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells; determining at least one maximum power reduction (MPR) based at least in part on the subset; and transmitting the at least one uplink transmission during at least a portion of the duration in accordance with one or more power control parameters that are based at least inpart on the at least one MPR.

54. A method, comprising: transmitting first control information associated with a set of active cells; and receiving, during at least a portion of a duration and in accordance with one or more power control parameters, at least one uplink transmission via a subset of the set of active cells, wherein the duration comprises at least one time domain resource for the at least one uplink transmission, wherein the at least one time domain resource is non-overlapping with at least one other time domain resource for at least one other uplink transmission via at least one other cell of the set of active cells, and wherein the one or more power control parameters are based at least in part on at least one maximum power reduction (MPR) associated with the subset.

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