Shared transmit power for mtrp operation
Patent Information
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- QUALCOMM INC
- Filing Date
- 2023-08-10
- Publication Date
- 2026-06-17
AI Technical Summary
Current wireless communication systems, particularly in 5G NR, face challenges in efficiently managing transmit power for multi-TRP operations, leading to potential exceedance of maximum permissible exposure (MPE) values.
The implementation of mechanisms to determine configured maximum transmit power for different TRPs and power headroom (PHR) reporting mechanisms, allowing for more efficient power control at the user equipment (UE) and ensuring compliance with MPE values for simultaneous uplink transmissions.
This approach enables the UE to effectively manage transmit power across multiple TRPs, ensuring that MPE values are satisfied for simultaneous uplink transmissions, thereby enhancing power control efficiency and compliance.
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Figure CN2023112165_13022025_PF_FP_ABST
Abstract
Description
SHARED TRANSMIT POWER FOR MTRP OPERATIONTECHNICAL FIELD
[0001] The present disclosure relates generally to communication systems, and more particularly, to wireless communication systems with configured maximum transmit power (s) .
[0002] INTRODUCTION
[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.
[0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR) . 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT) ) , and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB) , massive machine type communications (mMTC) , and ultra-reliable low latency communications (URLLC) . Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies.
[0005] BRIEF SUMMARY
[0006] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects. This summary neither identifies key or critical elements of all aspects nor delineates the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
[0007] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus at a user equipment (UE) are provided. The apparatus may include at least one memory and at least one processor coupled to the at least one memory. Based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to configure at least one maximum transmit power at the UE based on a total maximum permissible exposure (MPE) . Based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to transmit, to a network entity, at least one uplink transmission based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, where each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels.
[0008] To the accomplishment of the foregoing and related ends, the one or more aspects include the features hereinafter fully described and particularly pointed out in the claims. The following description and the drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.BRIEF DESCRIPTION OF THE DRAWINGS
[0009] FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network.
[0010] FIG. 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure.
[0011] FIG. 2B is a diagram illustrating an example of downlink (DL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0012] FIG. 2C is a diagram illustrating an example of a second frame, in accordance with various aspects of the present disclosure.
[0013] FIG. 2D is a diagram illustrating an example of uplink (UL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0014] FIG. 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network, in accordance with various aspects of the present disclosure.
[0015] FIG. 4 is a diagram illustrating a base station in communication with a UE via a set of beams, in accordance with various aspects of the present disclosure.
[0016] FIG. 5 is a diagram illustrating a set of two TRPs associated with a particular UE, in accordance with various aspects of the present disclosure.
[0017] FIG. 6 is a diagram illustrating example communications between a network entity and a UE, in accordance with various aspects of the present disclosure.
[0018] FIG. 7A is a diagram illustrating example transmit powers and MPEs when there are two uplink transmissions, in accordance with various aspects of the present disclosure.
[0019] FIG. 7B is a diagram illustrating example transmit powers and MPEs when there are two uplink transmissions, in accordance with various aspects of the present disclosure.
[0020] FIG. 8 is a diagram illustrating example transmit powers and MPEs when there are two uplink transmissions, in accordance with various aspects of the present disclosure.
[0021] FIG. 9A is a diagram illustrating example transmit power sharing scenario where a total maximum transmit power is smaller than a sum of a first transmit power for a first uplink transmission and a second transmit power of a second transmission, in accordance with various aspects of the present disclosure.
[0022] FIG. 9B is a diagram illustrating example transmit power sharing where a second transmission is dropped, in accordance with various aspects of the present disclosure.
[0023] FIG. 9C is a diagram illustrating example transmit power sharing where the transmit power of a second transmission is reduced, in accordance with various aspects of the present disclosure.
[0024] FIG. 9D is a diagram illustrating example transmit power sharing where the first transmit power and the second transmit power are scaled down based on a ratio, in accordance with various aspects of the present disclosure.
[0025] FIG. 10A is a diagram illustrating example PHR reporting where two panel specific PHRs for two simultaneous UL channels by considering per-panel configured maximum transmit powers and MPE values (MPE_0, MPE_1) , in accordance with various aspects of the present disclosure.
[0026] FIG. 10B is a diagram illustrating example PHR reporting where a single PHR is reported for two simultaneous UL channels, in accordance with various aspects of the present disclosure.
[0027] FIG. 10C is a diagram illustrating example PHR reporting where two per-panel PHRs and a cross channel PHR are reported for two simultaneous UL channels, in accordance with various aspects of the present disclosure.
[0028] FIG. 10D is a diagram illustrating example PHR reporting where two per-panel PHRs with a virtual power splitting for total configured transmit power are reported for two simultaneous UL channels, in accordance with various aspects of the present disclosure.
[0029] FIG. 11 is a diagram illustrating example transmit power (s) and virtual transmit power (s) , in accordance with various aspects of the present disclosure.
[0030] FIG. 12 is a flowchart of a method of wireless communication, in accordance with various aspects of the present disclosure, in accordance with various aspects of the present disclosure.
[0031] FIG. 13 is a flowchart of a method of wireless communication, in accordance with various aspects of the present disclosure, in accordance with various aspects of the present disclosure.
[0032] FIG. 14 is a diagram illustrating an example of a hardware implementation for an example apparatus and / or network entity.DETAILED DESCRIPTION
[0033] The detailed description set forth below in connection with the drawings describes various configurations and does not represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, these concepts may be practiced without these specific details. In some instances, well known structures and components are shown in block diagram form in order to avoid obscuring such concepts.
[0034] Several aspects of telecommunication systems are presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements” ) . These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.
[0035] For multi-TRP (mTRP) operations such as a UE transmitting to multiple TRPs associated with a network entity, there may be a MPE value configured that may be used for determining a total configured maximum transmit power. Aspects provided herein provide mechanisms for determining configured maximum transmit power for different TRPs and power headroom (PHR) reporting mechanisms for reporting the total configured maximum transmit power or the configured maximum transmit power for the different TRPs, enabling more efficient power control at the UE. With more efficient power control at the UE, the UE may be able to satisfy MPEs for mTRP UL transmissions that may be simultaneous.
[0036] By way of example, an element, or any portion of an element, or any combination of elements may be implemented as a “processing system” that includes one or more processors. When multiple processors are implemented, the multiple processors may perform the functions individually or in combination. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs) , central processing units (CPUs) , application processors, digital signal processors (DSPs) , reduced instruction set computing (RISC) processors, systems on a chip (SoC) , baseband processors, field programmable gate arrays (FPGAs) , programmable logic devices (PLDs) , state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system may execute software. Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.
[0037] Accordingly, in one or more example aspects, implementations, and / or use cases, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media may be any available media that can be accessed by a computer. By way of example, such computer-readable media can include a random-access memory (RAM) , a read-only memory (ROM) , an electrically erasable programmable ROM (EEPROM) , optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.
[0038] While aspects, implementations, and / or use cases are described in this application by illustration to some examples, additional or different aspects, implementations and / or use cases may come about in many different arrangements and scenarios. Aspects, implementations, and / or use cases described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, aspects, implementations, and / or use cases may come about via integrated chip implementations and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, etc. ) . While some examples may or may not be specifically directed to use cases or applications, a wide assortment of applicability of described examples may occur. Aspects, implementations, and / or use cases may range a spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more techniques herein. In some practical settings, devices incorporating described aspects and features may also include additional components and features for implementation and practice of claimed and described aspect. For example, transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, RF-chains, power amplifiers, modulators, buffer, processor (s) , interleaver, adders / summers, etc. ) . Techniques described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc. of varying sizes, shapes, and constitution.
[0039] Deployment of communication systems, such as 5G NR systems, may be arranged in multiple manners with various components or constituent parts. In a 5G NR system, or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element, or a network equipment, such as a base station (BS) , or one or more units (or one or more components) performing base station functionality, may be implemented in an aggregated or disaggregated architecture. For example, a BS (such as a Node B (NB) , evolved NB (eNB) , NR BS, 5G NB, access point (AP) , a transmission reception point (TRP) , or a cell, etc. ) may be implemented as an aggregated base station (also known as a standalone BS or a monolithic BS) or a disaggregated base station.
[0040] An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A disaggregated base station may be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more central or centralized units (CUs) , one or more distributed units (DUs) , or one or more radio units (RUs) ) . In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other RAN nodes. The DUs may be implemented to communicate with one or more RUs. Each of the CU, DU and RU can be implemented as virtual units, i.e., a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) .
[0041] Base station operation or network design may consider aggregation characteristics of base station functionality. For example, disaggregated base stations may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance) ) , or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN) ) . Disaggregation may include distributing functionality across two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network design. The various units of the disaggregated base station, or disaggregated RAN architecture, can be configured for wired or wireless communication with at least one other unit.
[0042] FIG. 1 is a diagram 100 illustrating an example of a wireless communications system and an access network. The illustrated wireless communications system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that can communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units (such as a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) 125 via an E2 link, or a Non-Real Time (Non-RT) RIC 115 associated with a Service Management and Orchestration (SMO) Framework 105, or both) . A CU 110 may communicate with one or more DUs 130 via respective midhaul links, such as an F1 interface. The DUs 130 may communicate with one or more RUs 140 via respective fronthaul links. The RUs 140 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, the UE 104 may be simultaneously served by multiple RUs 140.
[0043] Each of the units, i.e., the CUs 110, the DUs 130, the RUs 140, as well as the Near-RT RICs 125, the Non-RT RICs 115, and the SMO Framework 105, may include one or more interfaces or be coupled to one or more interfaces configured to receive or to transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller providing instructions to the communication interfaces of the units, can be configured to communicate with one or more of the other units via the transmission medium. For example, the units can include a wired interface configured to receive or to transmit signals over a wired transmission medium to one or more of the other units. Additionally, the units can include a wireless interface, which may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) , configured to receive or to transmit signals, or both, over a wireless transmission medium to one or more of the other units.
[0044] In some aspects, the CU 110 may host one or more higher layer control functions. Such control functions can include radio resource control (RRC) , packet data convergence protocol (PDCP) , service data adaptation protocol (SDAP) , or the like. Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 110. The CU 110 may be configured to handle user plane functionality (i.e., Central Unit –User Plane (CU-UP) ) , control plane functionality (i.e., Central Unit –Control Plane (CU-CP) ) , or a combination thereof. In some implementations, the CU 110 can be logically split into one or more CU-UP units and one or more CU-CP units. The CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as an E1 interface when implemented in an O-RAN configuration. The CU 110 can be implemented to communicate with the DU 130, as necessary, for network control and signaling.
[0045] The DU 130 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 140. In some aspects, the DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation, demodulation, or the like) depending, at least in part, on a functional split, such as those defined by 3GPP. In some aspects, the DU 130 may further host one or more low PHY layers. Each layer (or module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 130, or with the control functions hosted by the CU 110.
[0046] Lower-layer functionality can be implemented by one or more RUs 140. In some deployments, an RU 140, controlled by a DU 130, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like) , or both, based at least in part on the functional split, such as a lower layer functional split. In such an architecture, the RU (s) 140 can be implemented to handle over the air (OTA) communication with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control and user plane communication with the RU (s) 140 can be controlled by the corresponding DU 130. In some scenarios, this configuration can enable the DU (s) 130 and the CU 110 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
[0047] The SMO Framework 105 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO Framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements that may be managed via an operations and maintenance interface (such as an O1 interface) . For virtualized network elements, the SMO Framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface) . Such virtualized network elements can include, but are not limited to, CUs 110, DUs 130, RUs 140 and Near-RT RICs 125. In some implementations, the SMO Framework 105 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 111, via an O1 interface. Additionally, in some implementations, the SMO Framework 105 can communicate directly with one or more RUs 140 via an O1 interface. The SMO Framework 105 also may include a Non-RT RIC 115 configured to support functionality of the SMO Framework 105.
[0048] The Non-RT RIC 115 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updates, or policy-based guidance of applications / features in the Near-RT RIC 125. The Non-RT RIC 115 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 125. The Near-RT RIC 125 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 110, one or more DUs 130, or both, as well as an O-eNB, with the Near-RT RIC 125.
[0049] In some implementations, to generate AI / ML models to be deployed in the Near-RT RIC 125, the Non-RT RIC 115 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 125 and may be received at the SMO Framework 105 or the Non-RT RIC 115 from non-network data sources or from network functions. In some examples, the Non-RT RIC 115 or the Near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 115 may monitor long-term trends and patterns for performance and employ AI / ML models to perform corrective actions through the SMO Framework 105 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies) .
[0050] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Accordingly, a base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component indicated with dotted lines to signify that each component may or may not be included in the base station 102) . The base station 102 provides an access point to the core network 120 for a UE 104. The base station 102 may include macrocells (high power cellular base station) and / or small cells (low power cellular base station) . The small cells include femtocells, picocells, and microcells. A network that includes both small cell and macrocells may be known as a heterogeneous network. A heterogeneous network may also include Home Evolved Node Bs (eNBs) (HeNBs) , which may provide service to a restricted group known as a closed subscriber group (CSG) . The communication links between the RUs 140 and the UEs 104 may include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to an RU 140 and / or downlink (DL) (also referred to as forward link) transmissions from an RU 140 to a UE 104. The communication links may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication links may be through one or more carriers. The base station 102 / UEs 104 may use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction. The carriers may or may not be adjacent to each other. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL than for UL) . The component carriers may include a primary component carrier and one or more secondary component carriers. A primary component carrier may be referred to as a primary cell (PCell) and a secondary component carrier may be referred to as a secondary cell (SCell) .
[0051] Certain UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. The D2D communication link 158 may use the DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , and a physical sidelink control channel (PSCCH) . D2D communication may be through a variety of wireless D2D communications systems, such as for example, BluetoothTM (Bluetooth is a trademark of the Bluetooth Special Interest Group (SIG) ) , Wi-FiTM (Wi-Fi is a trademark of the Wi-Fi Alliance) based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.
[0052] The wireless communications system may further include a Wi-Fi AP 150 in communication with UEs 104 (also referred to as Wi-Fi stations (STAs) ) via communication link 154, e.g., in a 5 GHz unlicensed frequency spectrum or the like. When communicating in an unlicensed frequency spectrum, the UEs 104 / AP 150 may perform a clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available.
[0053] The electromagnetic spectrum is often subdivided, based on frequency / wavelength, into various classes, bands, channels, etc. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz –7.125 GHz) and FR2 (24.25 GHz –52.6 GHz) . Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with regard to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz –300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
[0054] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have identified an operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz –24.25 GHz) . Frequency bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and thus may effectively extend features of FR1 and / or FR2 into mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6 GHz –71 GHz) , FR4 (71 GHz –114.25 GHz) , and FR5 (114.25 GHz –300 GHz) . Each of these higher frequency bands falls within the EHF band.
[0055] With the above aspects in mind, unless specifically stated otherwise, the term “sub-6 GHz” or the like if used herein may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Further, unless specifically stated otherwise, the term “millimeter wave” or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.
[0056] The base station 102 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming. The base station 102 may transmit a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also transmit a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the best receive and transmit directions for each of the base station 102 / UE 104. The transmit and receive directions for the base station 102 may or may not be the same. The transmit and receive directions for the UE 104 may or may not be the same.
[0057] The base station 102 may include and / or be referred to as a gNB, Node B, eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , a TRP, network node, network entity, network equipment, or some other suitable terminology. The base station 102 can be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and an RU, or as a disaggregated base station including one or more of a CU, a DU, and / or an RU. The set of base stations, which may include disaggregated base stations and / or aggregated base stations, may be referred to as next generation (NG) RAN (NG-RAN) .
[0058] The core network 120 may include an Access and Mobility Management Function (AMF) 161, a Session Management Function (SMF) 162, a User Plane Function (UPF) 163, a Unified Data Management (UDM) 164, one or more location servers 168, and other functional entities. The AMF 161 is the control node that processes the signaling between the UEs 104 and the core network 120. The AMF 161 supports registration management, connection management, mobility management, and other functions. The SMF 162 supports session management and other functions. The UPF 163 supports packet routing, packet forwarding, and other functions. The UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identification handling, access authorization, and subscription management. The one or more location servers 168 are illustrated as including a Gateway Mobile Location Center (GMLC) 165 and a Location Management Function (LMF) 166. However, generally, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, the LMF 166, a position determination entity (PDE) , a serving mobile location center (SMLC) , a mobile positioning center (MPC) , or the like. The GMLC 165 and the LMF 166 support UE location services. The GMLC 165 provides an interface for clients / applications (e.g., emergency services) for accessing UE positioning information. The LMF 166 receives measurements and assistance information from the NG-RAN and the UE 104 via the AMF 161 to compute the position of the UE 104. The NG-RAN may utilize one or more positioning methods in order to determine the position of the UE 104. Positioning the UE 104 may involve signal measurements, a position estimate, and an optional velocity computation based on the measurements. The signal measurements may be made by the UE 104 and / or the base station 102 serving the UE 104. The signals measured may be based on one or more of a satellite positioning system (SPS) 170 (e.g., one or more of a Global Navigation Satellite System (GNSS) , global position system (GPS) , non-terrestrial network (NTN) , or other satellite position / location system) , LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS) , sensor-based information (e.g., barometric pressure sensor, motion sensor) , NR enhanced cell ID (NR E-CID) methods, NR signals (e.g., multi-round trip time (Multi-RTT) , DL angle-of-departure (DL-AoD) , DL time difference of arrival (DL-TDOA) , UL time difference of arrival (UL-TDOA) , and UL angle-of-arrival (UL-AoA) positioning) , and / or other systems / signals / sensors.
[0059] Examples of UEs 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA) , a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player) , a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similar functioning device. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc. ) . The UE 104 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. In some scenarios, the term UE may also apply to one or more companion devices such as in a device constellation arrangement. One or more of these devices may collectively access the network and / or individually access the network.
[0060] Referring again to FIG. 1, in some aspects, the UE 104 may include a power component 198. In some aspects, the power component 198 may be configured to configure at least one maximum transmit power at the UE based on a total maximum permissible exposure (MPE) . In some aspects, the power component 198 may be further configured to transmit, to a network entity, at least one uplink transmission based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, where each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels.
[0061] Although the following description may be focused on 5G NR, the concepts described herein may be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.
[0062] As described herein, a node (which may be referred to as a node, a network node, a network entity, or a wireless node) may include, be, or be included in (e.g., be a component of) a base station (e.g., any base station described herein) , a UE (e.g., any UE described herein) , a network controller, an apparatus, a device, a computing system, an integrated access and backhauling (IAB) node, a distributed unit (DU) , a central unit (CU) , a remote / radio unit (RU) (which may also be referred to as a remote radio unit (RRU) ) , and / or another processing entity configured to perform any of the techniques described herein. For example, a network node may be a UE. As another example, a network node may be a base station or network entity. As another example, a first network node may be configured to communicate with a second network node or a third network node. In one aspect of this example, the first network node may be a UE, the second network node may be a base station, and the third network node may be a UE. In another aspect of this example, the first network node may be a UE, the second network node may be a base station, and the third network node may be a base station. In yet other aspects of this example, the first, second, and third network nodes may be different relative to these examples. Similarly, reference to a UE, base station, apparatus, device, computing system, or the like may include disclosure of the UE, base station, apparatus, device, computing system, or the like being a network node. For example, disclosure that a UE is configured to receive information from a base station also discloses that a first network node is configured to receive information from a second network node. Consistent with this disclosure, once a specific example is broadened in accordance with this disclosure (e.g., a UE is configured to receive information from a base station also discloses that a first network node is configured to receive information from a second network node) , the broader example of the narrower example may be interpreted in the reverse, but in a broad open-ended way. In the example above where a UE is configured to receive information from a base station also discloses that a first network node is configured to receive information from a second network node, the first network node may refer to a first UE, a first base station, a first apparatus, a first device, a first computing system, a first set of one or more one or more components, a first processing entity, or the like configured to receive the information; and the second network node may refer to a second UE, a second base station, a second apparatus, a second device, a second computing system, a second set of one or more components, a second processing entity, or the like.
[0063] As described herein, communication of information (e.g., any information, signal, or the like) may be described in various aspects using different terminology. Disclosure of one communication term includes disclosure of other communication terms. For example, a first network node may be described as being configured to transmit information to a second network node. In this example and consistent with this disclosure, disclosure that the first network node is configured to transmit information to the second network node includes disclosure that the first network node is configured to provide, send, output, communicate, or transmit information to the second network node. Similarly, in this example and consistent with this disclosure, disclosure that the first network node is configured to transmit information to the second network node includes disclosure that the second network node is configured to receive, obtain, or decode the information that is provided, sent, output, communicated, or transmitted by the first network node.
[0064] FIG. 2A is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure. FIG. 2B is a diagram 230 illustrating an example of DL channels within a 5G NR subframe. FIG. 2C is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure. FIG. 2D is a diagram 280 illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplexed (FDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for either DL or UL, or may be time division duplexed (TDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for both DL and UL. In the examples provided by FIGs. 2A, 2C, the 5G NR frame structure is assumed to be TDD, with subframe 4 being configured with slot format 28 (with mostly DL) , where D is DL, U is UL, and F is flexible for use between DL / UL, and subframe 3 being configured with slot format 1 (with all UL) . While subframes 3, 4 are shown with slot formats 1, 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols. UEs are configured with the slot format (dynamically through DL control information (DCI) , or semi-statically / statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI) . Note that the description infra applies also to a 5G NR frame structure that is TDD.
[0065] FIGs. 2A-2D illustrate a frame structure, and the aspects of the present disclosure may be applicable to other wireless communication technologies, which may have a different frame structure and / or different channels. A frame (10 ms) may be divided into 10 equally sized subframes (1 ms) . Each subframe may include one or more time slots. Subframes may also include mini-slots, which may include 7, 4, or 2 symbols. Each slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For normal CP, each slot may include 14 symbols, and for extended CP, each slot may include 12 symbols. The symbols on DL may be CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbols. The symbols on UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (for power limited scenarios; limited to a single stream transmission) . The number of slots within a subframe is based on the CP and the numerology. The numerology defines the subcarrier spacing (SCS) (see Table 1) . The symbol length / duration may scale with 1 / SCS.
[0066] Table 1: Numerology, SCS, and CP
[0067] For normal CP (14 symbols / slot) , different numerologies μ 0 to 4 allow for 1, 2, 4, 8, and 16 slots, respectively, per subframe. For extended CP, the numerology 2 allows for 4 slots per subframe. Accordingly, for normal CP and numerology μ, there are 14 symbols / slot and 2μ slots / subframe. The subcarrier spacing may be equal to 2μ*15 kHz, where μ is the numerology 0 to 4. As such, the numerology μ=0 has a subcarrier spacing of 15 kHz and the numerology μ=4 has a subcarrier spacing of 240 kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIGs. 2A-2D provide an example of normal CP with 14 symbols per slot and numerology μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a set of frames, there may be one or more different bandwidth parts (BWPs) (see FIG. 2B) that are frequency division multiplexed. Each BWP may have a particular numerology and CP (normal or extended) .
[0068] A resource grid may be used to represent the frame structure. Each time slot includes a resource block (RB) (also referred to as physical RBs (PRBs) ) that extends 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs) . The number of bits carried by each RE depends on the modulation scheme.
[0069] As illustrated in FIG. 2A, some of the REs carry reference (pilot) signals (RS) for the UE.The RS may include demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS may also include beam measurement RS (BRS) , beam refinement RS (BRRS) , and phase tracking RS (PT-RS) .
[0070] FIG. 2B illustrates an example of various DL channels within a subframe of a frame. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs) , each CCE including six RE groups (REGs) , each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within one BWP may be referred to as a control resource set (CORESET) . A UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., common search space, UE-specific search space) during PDCCH monitoring occasions on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at greater and / or lower frequencies across the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe / symbol timing and a physical layer identity. A secondary synchronization signal (SSS) may be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine a physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine a physical cell identifier (PCI) . Based on the PCI, the UE can determine the locations of the DM-RS. The physical broadcast channel (PBCH) , which carries a master information block (MIB) , may be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as SS block (SSB) ) . The MIB provides a number of RBs in the system bandwidth and a system frame number (SFN) . The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) , and paging messages.
[0071] As illustrated in FIG. 2C, some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH) . The PUSCH DM-RS may be transmitted in the first one or two symbols of the PUSCH. The PUCCH DM-RS may be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used. The UE may transmit sounding reference signals (SRS) . The SRS may be transmitted in the last symbol of a subframe. The SRS may have a comb structure, and a UE may transmit SRS on one of the combs. The SRS may be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.
[0072] FIG. 2D illustrates an example of various UL channels within a subframe of a frame. The PUCCH may be located as indicated in one configuration. The PUCCH carries uplink control information (UCI) , such as scheduling requests, a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a rank indicator (RI) , and hybrid automatic repeat request (HARQ) acknowledgment (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACK and / or negative ACK (NACK) ) . The PUSCH carries data, and may additionally be used to carry a buffer status report (BSR) , a power headroom report (PHR) , and / or UCI.
[0073] FIG. 3 is a block diagram of a base station 310 in communication with a UE 350 in an access network. In the DL, Internet protocol (IP) packets may be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIBs) , RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release) , inter radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (ciphering, deciphering, integrity protection, integrity verification) , and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs) , error correction through ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs) , re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs) , demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
[0074] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding / decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK) , quadrature phase-shift keying (QPSK) , M-phase-shift keying (M-PSK) , M-quadrature amplitude modulation (M-QAM) ) . The coded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and / or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation scheme, as well as for spatial processing. The channel estimate may be derived from a reference signal and / or channel condition feedback transmitted by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier with a respective spatial stream for transmission.
[0075] At the UE 350, each receiver 354Rx receives a signal through its respective antenna 352. Each receiver 354Rx recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT) . The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, and the reference signal, are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions may be based on channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.
[0076] The controller / processor 359 can be associated with at least one memory 360 that stores program codes and data. The at least one memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0077] Similar to the functionality described in connection with the DL transmission by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression / decompression, and security (ciphering, deciphering, integrity protection, integrity verification) ; RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
[0078] Channel estimates derived by a channel estimator 358 from a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes, and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antenna 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a respective spatial stream for transmission.
[0079] The UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 350. Each receiver 318Rx receives a signal through its respective antenna 320. Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to a RX processor 370.
[0080] The controller / processor 375 can be associated with at least one memory 376 that stores program codes and data. The at least one memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0081] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform aspects in connection with power component 198 of FIG. 1.
[0082] FIG. 4 is a diagram 400 illustrating a base station 402 in communication with a UE 404. Referring to FIG. 4, the base station 402 may transmit a beamformed signal to the UE 404 in one or more of the directions 402a, 402b, 402c, 402d, 402e, 402f, 402g, 402h. The UE 404 may receive the beamformed signal from the base station 402 in one or more receive directions 404a, 404b, 404c, 404d. The UE 404 may also transmit a beamformed signal to the base station 402 in one or more of the directions 404a-404d. The base station 402 may receive the beamformed signal from the UE 404 in one or more of the receive directions 402a-402h. The base station 402 / UE 404 may perform beam training to determine the best receive and transmit directions for each of the base station 402 / UE 404. The transmit and receive directions for the base station 402 may or may not be the same. The transmit and receive directions for the UE 404 may or may not be the same. The term beam may be otherwise referred to as “spatial filter” . Beamforming may be otherwise referred to as “spatial filtering” .
[0083] In response to different conditions, the UE 404 may determine to switch beams, e.g., between beams 402a-402h. The beam at the UE 404 may be used for reception of downlink communication and / or transmission of uplink communication. In some examples, the base station 402 may send a transmission that triggers a beam switch by the UE 404. A TCI state may include Quasi co-location (QCL) information that the UE can use to derive timing / frequency error and / or transmission / reception spatial filtering for transmitting / receiving a signal. Two antenna ports are said to be quasi co-located if properties of the channel over which a symbol on one antenna port is conveyed can be inferred from the channel over which a symbol on the other antenna port is conveyed. The base station may indicate a TCI state to the UE as a transmission configuration that indicates QCL relationships between one signal (e.g., a reference signal) and the signal to be transmitted / received. For example, a TCI state may indicate a QCL relationship between DL RSs in one RS set and PDSCH / PDCCH DM-RS ports. TCI states can provide information about different beam selections for the UE to use for transmitting / receiving various signals. For example, the base station 402 may indicate a TCI state change, and in response, the UE 404 may switch to a new beam according to the new TCI state indicated by the base station 402.
[0084] In some wireless communication systems, such as a wireless communication system under a unified TCI framework, a pool of joint DL / UL TCI states may be used for joint DL / UL TCI state updates for beam indication. For example, the base station 402 may transmit a pool of joint DL / UL TCI states to the UE 404. The UE 404 may determine to switch transmission beams and / or reception beams based on the joint DL / UL TCI states. In some aspects, the TCI state pool for separate DL and UL TCI state updates may be used. In some aspects, the base station 402 may use RRC signaling to configure the TCI state pool. In some aspects, the joint TCI may or may not include UL-specific parameter (s) such as UL PC / timing parameters, PL RS, panel-related indication, or the like. If the joint TCI includes the UL-specific parameter (s) , the parameters may be used for the UL transmission of the DL and UL transmissions to which the joint TCI is applied.
[0085] Under a unified TCI framework, different types of common TCI states may be indicated. For example, a type 1 TCI may be a joint DL / UL common TCI state to indicate a common beam for at least one DL channel or RS and at least one UL channel or RS. A type 2 TCI may be a separate DL (e.g., separate from UL) common TCI state to indicate a common beam for more than one DL channel or RS. A type 3 TCI may be a separate UL common TCI state to indicate a common beam for more than one UL channel / RS. A type 4 TCI may be a separate DL single channel or RS TCI state to indicate a beam for a single DL channel or RS. A type 5 TCI may be a separate UL single channel or RS TCI state to indicate a beam for a single UL channel or RS. A type 6 TCI may include UL spatial relation information (e.g., such as sounding reference signal (SRS) resource indicator (SRI) ) to indicate a beam for a single UL channel or RS. An example RS may be an SSB, a tracking reference signal (TRS) and associated CSI-RS for tracking, a CSI-RS for beam management, a CSI-RS for CQI management, a DM-RS associated with non-UE-dedicated reception on PDSCH and a subset (which may be a full set) of control resource sets (CORESETs) , or the like.
[0086] A TCI state may be defined to represent at least one source RS to provide a reference (e.g., UE assumption) for determining quasi-co-location (QCL) or spatial filters. For example, a TCI state may define a QCL assumption between a source RS and a target RS.
[0087] To accommodate situations where beam indication for UL and DL are separate, two separate TCI states (one for DL and another one for UL) may be utilized. For a separate DL TCI, the source reference signal (s) in M (M being an integer) TCIs may provide QCL information at least for UE-dedicated reception on PDSCH and for UE-dedicated reception on all or subset of CORESETs in a CC. For a separate UL TCI, the source reference signal (s) in N (N being an integer) TCIs provide a reference for determining common UL transmission (TX) spatial filter (s) at least for dynamic-grant or configured-grant based PUSCH and all or subset of dedicated PUCCH resources in a CC.
[0088] In some aspects, the UL TX spatial filter may also apply to all SRS resources in resource set (s) configured for antenna switching, codebook-based, or non-codebook-based UL transmissions.
[0089] In some aspects, each of the following DL RSs may share the same indicate TCI state as UE-dedicated reception on PDSCH and for UE-dedicated reception on all or subset of CORESETs in a CC: CSI-RS resources for CSI, some or all CSI-RS resources for beam management, CSI-RS for tracking, and DM-RS (s) associated with UE-dedicated reception on PDSCH and all / subset of CORESETs. Some SRS resources or resource sets for beam management may share the same indicated TCI state as dynamic-grant / configured-grant based PUSCH, all or subset of dedicated PUCCH resources in a CC. In some wireless communication systems, several QCL rules may be defined. For example, a first rule may define that TCI to DM-RS of UE dedicated PDSCH and PDCCH may not have SSB as a source RS to provide QCL type D information. A second rule may define that TCI to some DL RS such as CSI-RS may have SSB as a source RS to provide QCL type D information. A third rule may define that TCI to some UL RS such as SRS can have SSB as a source RS to provide spatial filter information. Example aspects provided herein enable a UE to signal capability of applying unified TCI to RS, provide QCL indication to DL RS, and provide hybrid spatial filter indication to UL RS.
[0090] In some wireless communication systems, to facilitate a common TCI state ID update and activation to provide common QCL information at least for UE-dedicated PDCCH / PDSCH (e.g., common to UE-dedicated PDCCH and UE-dedicated PDSCH) or common UL TX spatial filter (s) at least for UE-dedicated PUSCH / PUCCH across a set of configured CCs / BWPs (e.g., common to multiple PUSCH / PUCCH across configured CCs / BWPs) , several configurations may be provided. For example, the RRC-configured TCI state pool (s) may be configured as part of the PDSCH configuration (such as in a PDSCH-Config parameter) for each BWP or CC. The RRC-configured TCI state pool (s) may be absent in the PDSCH configuration for each BWP / CC, and may be replaced by a reference to RRC-configured TCI state pool (s) in a reference BWP / CC. For a BWP / CC where the PDSCH configuration contains a reference to the RRC-configured TCI state pool (s) in a reference BWP / CC, the UE may apply the RRC-configured TCI state pool (s) in the reference BWP / CC. When the BWP / CC identifier (ID) (e.g., for a cell) for QCL-Type A or Type D source RS in a QCL information (such as in a QCL info parameter) of the TCI state is absent, the UE may assume that QCL-Type A or Type D source RS is in the BWP / CC to which the TCI state applies. In addition, a UE may report a UE capability indicating a maximum number of TCI state pools that the UE can support across BWPs and CCs in a band.
[0091] Before receiving a TCI state, a UE may assume that the antenna ports of one DM-RS port group of a PDSCH are spatially QCL’d with an SSB determined in the initial access procedure with respect to one or more of: a Doppler shift, a Doppler spread, an average delay, a delay spread, a set of spatial Rx parameters, or the like. After receiving the new TCI state, the UE may assume that the antenna ports of one DM-RS port group of a PDSCH of a serving cell are QCL’d with the RS (s) in the RS set with respect to the QCL type parameter (s) given by the indicated TCI state. Regarding the QCL types, QCL type A may include the Doppler shift, the Doppler spread, the average delay, and the delay spread; QCL type B may include the Doppler shift and the Doppler spread; QCL type C may include the Doppler shift and the average delay; and QCL type D may include the spatial Rx parameters (e.g., associated with beam information such as beamforming properties for finding a beam) . In some aspects, the maximum number of TCI states may be 128.
[0092] In some aspects, a UE may receive a signal from a base station. The signal may be configured to trigger a TCI state change and may be received via, for example, a medium access control (MAC) control element (CE) (MAC-CE) , a downlink control information (DCI) , or a radio resource control (RRC) signal. The TCI state change may cause the UE to find the best or most suitable UE receive beam corresponding to the TCI state indicated by the base station and switch to such beam. Switching beams may allow for an enhanced or improved connection between the UE and the base station by ensuring that the transmitter and receiver use the same configured set of beams for communication.
[0093] In some aspects, a spatial relation change, such as a spatial relation update, may trigger the UE to switch beams. Beamforming may be applied to uplink channels, such as a PUSCH, a PUCCH, or an SRS. Beamforming may be based on configuring one or more spatial relations between the uplink and downlink signals. Spatial relation indicates that a UE may transmit the uplink signal using the same beam used for receiving the corresponding downlink signal.
[0094] In another aspect, the base station 402 may indicate a change in a PL RS that the UE may use to determine power control for uplink transmissions, such as a PUSCH, a PUCCH, or an SRS. In response to the change in the PL RS, the UE 404 may determine to switch to a new beam.
[0095] Some wireless communication systems may use codebook-based MIMO. MIMO systems may allow multiple independent radio terminals, each of which has one or multiple antennas that communicate with a given access point in such a way that each radio terminal can fully utilize all the spectral resources simultaneously. A MIMO system (such as the base station 402) may employ a procedure, such as precoding, to resolve the problem of interference among the signals transmitted from an access point to the multiple terminals in the same frequency band at the same time.
[0096] In codebook-based MIMO wireless communication systems, the precoding may be selected from a standardized codebook. In a non-codebook-based MIMO, there may be no such codebook, and the precoding may be dynamically determined. For some non-codebook-based MIMO in a PUSCH, an SRI field in DCI may indicate a set of precoders associated with an SRS resource set and a set of power control (PC) parameters which may include P0, alpha, closed-loop index (which may be referred to as “Closedloopindex” ) (which may be represented by m) , PL RS, or the like. P0 may represent a base station received power per resource block assuming a path loss of 0 decibels (dB) . Alpha may represent possible values for uplink power control (e.g., pathloss compensation factor) . The closed-loop index may be an index of the closed power control loop associated with the SRI and the associated PUSCH. A beam of the PUSCH may follow the SRS resource set. For example, all SRSs in the same SRS resource set may have the same beam, and the SRI may not select a beam.
[0097] For some codebook-based MIMO in a PUSCH, an SRI field in DCI may select an SRS resource from multiple SRSs in an SRS resource set for determining a beam for PUSCH transmission. For example, different SRS selected by SRI in the SRS resource set may have different beams. A transmitted precoding matrix indicator (TPMI) in DCI may indicate precoders, and the SRI field may indicate a set of power control parameters which may also include P0, alpha, Closedloopindex, PL RS, or the like.
[0098] For PC parameters that are not PL RS (e.g., P0, alpha, and closedloopindex) , for each of PUSCH, PUCCH, and SRS, one or more of the following settings may be selected or combined: 1) the setting of (P0, alpha, closed-loop index) may be associated with UL or (if applicable) joint TCI state; 2) the setting of (P0, alpha, closed-loop index) may be included with UL or (if applicable) joint TCI state; and 3) the setting of (P0, alpha, closed-loop index) may be neither associated with nor included in UL or (if applicable) joint TCI state. The setting of (P0, alpha, closed-loop index) may be associated with the UL channel or UL RS. Therefore, the setting of PC parameters that are not PL RS may be channel-specific and signal-specific. PL RS settings may be configured differently. For example, PL RS may be included in UL TCI state (or, if applicable, joint TCI state) . If not included in the UL TCI state, PL RS may be the periodic DL-RS used as a source RS for determining spatial TX filter or the PL RS used for the UL RS in UL or (if applicable) joint TCI state. PL-RS may also be associated with (but not included in) UL TCI state (or, if applicable, joint TCI state) . If not associated with the UL TCI state, PL RS may be the periodic DL-RS used as a source RS for determining spatial TX filter or the PL RS used for the UL RS in UL or (if applicable) joint TCI state. A UE may also calculate path-loss based on periodic DL RS configured as the source RS for determining spatial TX filter in UL or (if applicable) joint TCI state. In some aspects, if a PL RS is not included in or associated with the UL TCI state (or, if applicable, joint TCI state) , the UE may estimate path-loss based on the PL-RS of an UL RS provided in an UL TCI state (or, if applicable, joint TCI state) as a source RS for determining the spatial TX filter. In some aspects, if a PL RS is not included in or associated with the UL TCI state (or, if applicable, joint TCI state) , the UE may not estimate path-loss based on the PL-RS of an UL RS provided in an UL TCI state (or, if applicable, joint TCI state) as a source RS for determining the spatial TX filter. In some aspects, a UE may calculate path-loss based on periodic DL RS configured as the source RS or a periodic QCL-Type-D / spatialRelationInfo source of the source RS in UL TCI state or (if applicable) joint TCI state.
[0099] A wireless device may include multiple TRPs, e.g., M-TRP. Each TRP may include different RF modules having a shared hardware and / or software controller. Each TRP may have separate RF and digital processing. Each TRP may also perform separate baseband processing. Each TRP may include a different antenna panel or a different set of antenna elements of a wireless device. The TRPs of the wireless device may be physically separated. For example, TRPs on a wireless device of a vehicle may be located at different locations of the vehicle. Front and rear antenna panels on a vehicle may be separated by 3 meters, 4 meters, or the like. The spacing between TRPs may vary based on the size of a vehicle and / or the number of TRPs associated with the vehicle. Each of the TRPs may experience a channel differently (e.g., experience a different channel quality) due to the difference physical location, the distance between the TRPs, different line-of-sight (LOS) characteristics (e.g., a LOS channel in comparison to a non-LOS (NLOS) channel) , blocking / obstructions, interference from other transmissions, among other reasons.
[0100] A single DCI (sDCI) may be used for scheduling DL or UL channels for multi-TRP (mTRP) (e.g., two TRPs) . Operations or channels associated with sDCI for mTRP may be referred to as “sDCI mTRP. ” For example, one DCI may be used for scheduling PDSCHs on two different TRPs for a UE.
[0101] In some aspects, mDCI may be used for DL or UL channels for mTRP. Operations or channels associated with mDCI for mTRP may be referred to as “mDCI mTRP. ” For example, two DCIs may be used for scheduling PDSCHs on two different TRPs for a UE.
[0102] FIG. 5 is a diagram 500 illustrating an example in which a first TRP 502 sends, to a UE 504, an sDCI 511 with scheduling information for downlink communication, such as PDSCH or AP CSI-RS, from the first TRP 502 and the second TRP 506. In some aspects, the mTRP communication may be scheduled by multiple DCI (mDCI) , e.g., from the different TRPs. For example, diagram 500 also shows an example in which the TRP 502 sends, to the UE 504, a DCI 512a (e.g., a first DCI in a set of mDCI) scheduling downlink communication, e.g., PDSCH or AP CSI-RS, from the TRP 502, and the TRP 506 sends, to the UE 504, DCI 512b (e.g., a second DCI in the set of mDCI) scheduling downlink communication from the TRP 506. Thus, control and / or data signaling from the TRPs may overlap in time, frequency, and / or spatial directions.
[0103] As illustrated, the first TRP 502 may be associated with a first TCI state 503 (e.g., QCL with a first reference signal) and the second TRP 506 may be associated with a second TCI state 507 (e.g., QCL with a second reference signal) . Diagram 500 further illustrates that multiple TRPs may coordinate to multiplex communications for at least one UE (e.g., the UE 504) using time division multiplexing (TDM) . The TDM may be based on cyclic mapping (e.g., TDM cyclic mapping) in which resources for different TRPs are interspersed. In some aspects, the TDM may be based on sequential mapping (e.g., TDM sequential mapping) in which resources for different TRPs are scheduled in consecutive resources. For example, for the mDCI example, HARQ ACK / NACK feedback for the different TRPs may be based on a single codebook or may be based on different codebooks. In some aspects, PDCCH from multiple TRPs may be transmitted with repetition having different QCL relationships. In some aspect, PUSCH or PUCCH may be transmitted to multiple TRPs in a TDM manner with repetition, or may be simultaneously transmitted with spatial division multiplexing (SDM) .
[0104] As used herein, the term “beam” or “spatial filter” may be used to refer to a spatial filter for transmitting or receiving a transmission. A spatial filter may be applied while transmitting or receiving a transmission and applying a spatial filter may include applying a same direction, same shape, or same power of the beam. An RF chain at a transmitter of a network entity (such as a base station) may be one or more modules or components that processes digital signal as an input and process the digital signal to an analog signal that may be ready for an antenna to transmit to another device. By way of example, an RF chain may take digital signal as an input, process the digital signal using a digital to analog converter, use a low pass filter to process an output of the digital to analog converter, perform frequency up-convert based on a local oscillator, amplify the signal using a power amplifier, filter the signal based on a band pass filter, and process the signal based on phase shifters. A network entity, such as a base station, may use a set of antennas connected to multiple IQ modulators or IF modulators and the set of antennas may come from different panels or different remote radio head (RRH) units associated with a same network entity. An RRH unit may be a remote radio transceiver that connects to an operator radio control panel via electrical or wireless interface. An RRH unit may be used for extending range of a network entity and different RRH units may be located in different physical locations while being considered part of a same network entity (e.g., a same gNB) . While transmitting or receiving a transmission, a spatial filter may be applied at one or more panels of a network entity or a UE. As used herein, the term “panel” may refer to a physical or virtual entity associated with one or more antenna elements or antenna panels at a UE or a base station. In some aspects, each panel may be associated with a respective spatial filter. In some aspects, a respective spatial filter associated with a panel may change. Each panel may be identified by a panel identifier (ID) which may be a RS resource set ID, an antenna ID, or an antenna group ID.
[0105] For multi-TRP (mTRP) operations such as a UE transmitting to multiple TRPs associated with a network entity (e.g., simultaneous transmission across multiple panels (STxMP) ) , there may be a MPE value configured that may be used for determining a total configured maximum transmit power. Aspects provided herein provide mechanisms for determining configured maximum transmit power for different TRPs and power headroom (PHR) reporting mechanisms for reporting the total configured maximum transmit power or the configured maximum transmit power for the different TRPs, enabling more efficient power control at the UE.
[0106] In some aspects, there may be per TRP or per panel configured maximum transmit power (s) . In some aspects, there may be a total configured maximum transmit power (e.g., per UE) over all UE panels used for STxMP. A maximum transmit power may be configured based on total radiated power (e.g., maximum total radiated power or the like) , equivalent isotropic radiated power (EIRP) (e.g., maximum EIRP, minimum peak EIRP, spherical coverage EIRP which may be fifty percentile EIRP) , or the like. In some aspects, the thresholds may be per power class, per band to determine a maximum transmit power. Various configured parameters may affect power related operations for the UE, e.g., including uplink power control, PHR, and power prioritization across carriers for carrier aggregation (CA) . A UE may use or be configured with (e.g., a higher layer at the UE may configure a lower layer at the UE with) a total configured maximum transmit power per component carrier (CC) which may be represented by a parameter Pcmax, f, c. The parameter Pcmax, f, c may be determined by the UE based on an MPE or other specifications based on EIRP, total radiated power, or the like. The parameter Pcmax, f, c may be used for UL power control and PHR. A UE may use or be configured with (e.g., configure itself with) a total configured maximum transmit power across all CCs, which may be represented by a parameter Pcmax. The parameter Pcmax may be used for power prioritization in CA.The parameter Pcmax may be determined by the UE based on the MPE or other specifications based on EIRP, total radiated power, or the like. In some alternative aspects, a UE may be configured with, e.g., receive a configuration message from a network entity with, indicated transmit powers.
[0107] A UE configured maximum output power per CC may be used to determine the transmission power of PUSCH, PUCCH, sounding reference signal (SRS) , PRACH, or other transmissions in a given UL CC. The UE may determine (e.g., calculate) the transmit power for a PUSCH, PUCCH, SRS, or PRACH transmission based on the parameter Pcmax, f, c. For example, if a UE transmits a PUSCH on active UL BWP b of carrier f of serving cell c using parameter set configuration with index j and PUSCH power control adjustment state with index l, the UE may determine the PUSCH transmission power PPUSCH, b, f, c (i, j, qd, l) in PUSCH transmission occasion i as:
[0108] [decibel milliwatts (dBm) ] . The parameter PCMAX, f, c (i) is the UE configured maximum output power or carrier f of serving cell c in PUSCH transmission occasion i. The parameter PO_PUSCH, b, f, c (j) is a parameter composed of the sum of a component PO_NOMINAL, PUSCH, f, c (j) and a component PO_UE_PUSCH, b, f, c (j) where j∈ {0, 1, …, J-1} . The parameter αb, f, c (j) may be Alpha that may be determined by the UE. The parameter is the bandwidth of the PUSCH resource assignment expressed in number of resource blocks for PUSCH transmission occasion i on active UL BWP b of carrier f of serving cell c and μ is a SCS configuration. The parameter PLb, f, c (qd) is a downlink pathloss estimate in dB calculated by the UE using reference signal (RS) index qd for the active DL BWP of carrier f of serving cell c. The parameter ΔTF, b, f, c (i) (delta, which may be an offset value configured by the network) may equal to for Ks=1.25 and ΔTF, b, f, c (i) =0 for Ks=0 where Ks is provided by delta modulation and coding scheme (MCS) for each UL BWP b of each carrier f and serving cell c. The parameter fb,f, c (i, l) is PUSCH power control adjustment state for active UL BWP b of carrier f of serving cell c in PUSCH transmission occasion i.
[0109] As an example, the UE may configure Pcmax, f, c that may be per component carrier (CC) . For example, the UE may configure its maximum output power. The configured UE maximum output power Pcmax, f, c for carrier f of a serving cell c may be defined as that available to the reference point of a given transmitter branch that corresponds to the reference point of the higher-layer filtered reference signal received power (RSRP) measurement. The configured UE maximum output power Pcmax, f, c for carrier f of a serving cell c may be set such that the corresponding measured peak EIRP Pumax, f, c is within the following bounds is within the following bounds: PPowerclass + ΔPIBE –MAX (MAX (MPRf, c, A-MPRf, c, ) + ΔMBP, n, P-MPRf, c) –MAX{T (MAX (MPRf, c, A-MPRf, c, ) ) , T (P-MPRf, c) } ≤ PUMAX, f, c ≤ EIRPmax. In some aspects, the corresponding measured total radiated power PTMAX, f, c may be bounded by PTMAX, f, c ≤ TRPmax. The parameter PPowerclass may be the UE minimum peak EIRP. The parameter EIRPmax may be the applicable maximum EIRP. The parameter MPRf, c may be a maximum output power reduction for carrier f of serving cell c. The parameter A-MPRf, c may be additional maximum power reduction allowed for the maximum output power for uplink band n. The parameter ΔTIB, P, n may be the peak EIRP relaxation. The UE power class may include several different UE power classes, such as class 1 for fixed wireless access (FWA) UE, class 2 for vehicular UE, class 3 for handheld UE, class 4 for high power handheld UE, or the like. As an example, UE minimum peak EIRP for power class 3 is provided below:
[0110] Table 2
[0111] A UE configured with carrier aggregation may configure its maximum output power for each uplink activated serving cell c and its total configured maximum output power PCMAX. The UE maximum configured power PCMAX in a transmission occasion may be determined by the UL grants for carriers f of all serving cells c with non-zero granted power in the respective reference point. The configured UE maximum output power PCMAX shall be set such that the corresponding measured total peak EIRP PUMAX is within the following bounds: PPowerclass –MAX (MAX (MPR, A-MPR) + ΔMBP, n, P-MPR) –MAX {T (MAX (MPR, A-MPR) ) , T (P-MPR) } ≤ PUMAX ≤ EIRPmax. The parameter PPowerclass may be the UE minimum peak EIRP. The parameter EIRPmax may be the applicable maximum EIRP. The parameter MPR may be a maximum output power reduction configured for CA. The parameter A-MPR may be additional maximum power reduction configured for CA.The parameter ΔMBP, n may be the peak EIRP relaxation. The parameter P-MPR may be the power management term. The measured configured power PUMAX for carrier aggregation may be: PUMAX=10 log10∑c, f (c) pUMAX, f, c, where pUMAX, f, c is the linear value of the measured power PUMAX, f, c for carrier f=f (c) of serving cell c.
[0112] FIG. 6 is a diagram 600 illustrating example communications between a network entity 604 and a UE 602, in accordance with various aspects of the present disclosure. As illustrated in FIG. 6, at 606, the UE 602 may configure maximum transmit power (s) . In some aspects, at 606, the UE 602 may configure per-TRP / panel power control. In some aspects, the UE 602 may also configure per-TRP / panel configured maximum transmit power (s) . In some aspects, the per-TRP / panel power control or per-TRP / panel configured maximum transmit power (s) may be based on an identifier k, which may be based on at least one of: one of: a TRP identifier (ID) associated with the respective TRP, a transmission configuration indicator (TCI) state group ID associated with the respective TRP or the respective panel, a transmit power control (TPC) ID associated with the respective TRP or the respective panel, a power amplifier ID associated with the respective TRP or the respective panel, a pathloss reference signal (PL RS) ID associated with the respective TRP or the respective panel, a closed-loop index associated with the respective TRP or the respective panel, a control resource set (CORESET) pool index associated with the respective TRP or the respective panel, a sounding reference signal (SRS) resource set ID associated with the respective TRP or the respective panel, a demodulation reference signal (DM-RS) port group ID associated with the respective TRP or the respective panel, a resource block allocation set ID associated with the respective TRP or the respective panel, a physical cell ID (PCI) associated with the respective TRP or the respective panel, or the like. Among all the power control parameters such as P0, M, alpha, PL RS, delta, power control adjustment state (f) , or the like, each factor (e.g., power control parameter) may have its own value for the corresponding value of identifier k. In some aspects, per-TRP / panel configured maximum transmit power may be in the form of per-TRP configured UL Tx power In some aspects, a per-TRP power component may be capped by (e.g., not exceeding) the per-TRP configured UL Tx power, which may be represented by In some aspects, the sum of the two per-TRP Tx power (e.g., represented by ) may be capped by a cell-level total configured UL Tx power. In some aspects, the per-TRP / panel transmit power may be, in dBm:
[0113] In some aspects, at 606, the UE 602 may also configure total configured maximum transmit power. For example, instead of configuring per-TRP / panel power control and per-TRP / panel configured maximum transmit power (s) , the UE 602 may configure per-TRP / panel power control and total configured maximum transmit power (e.g., across all panels / TRPs) . In some aspects, the total configured maximum transmit power may be a maximum for a sum power in linear for transmission across all TRPs / panels. In some aspects, the total configured maximum transmit power may be a maximum for a sum power in linear for transmission per cell, and may be capped by the cell-level total configured UL Tx power The total configured transmit power may be:
[0114] PUSCH is given as an example and such configured transmit power (s) or power control may be applicable to PUSCH, PUCCH, or other transmissions.
[0115] At 608, based on the configured maximum transmit power (s) , the UE may determine the transmit power (s) for uplink transmission (s) , such as at least two simultaneous uplink transmissions including a first uplink transmission 612A (e.g., may be associated with a first TRP / panel) and a second uplink transmission 612B (e.g., may be associated with a second TRP / panel) . In some aspects, the UE may also transmit PHR(s) 610 to the network entity 604.
[0116] If the UE 602 has configured a total configured maximum transmit power (e.g., across all panels / TRPs) , at 608 the UE may determine the total configured maximum transmit power for the uplink transmission (s) based on (1) a function using two panel-specific MPE values or (2) a total MPE value separate from two panel-specific MPE values. For example, a function using two panel-specific MPE values may be based on MPE_T = max {MPE_0, MPE_1} for determining the total configured maximum power In such aspects, the UE 602 may report two panel-specific MPE values to the network entity 604 in PHR (s) 610 and the network entity 604 may consider max {MPE_0, MPE_1} as the MPE value for
[0117] Referring now to FIG. 7A, FIG. 7A is a diagram 700 illustrating example transmit powers and MPEs when there are two uplink transmissions, in accordance with various aspects of the present disclosure. As illustrated in FIG. 7A, the function representing the total MPE may be MPE_T may be the maximum among two panel-specific MPE values MPE_0 and MPE_1 (e.g., max {MPE_0, MPE_1} ) .
[0118] In another example, a function using two panel-specific MPE values may be based on MPE_T = MPE_0+MPE_1 (e.g., sum of the two panel-specific MPE values) . Referring now to FIG. 7B, FIG. 7B is a diagram 750 illustrating example transmit powers and MPEs when there are two uplink transmissions, in accordance with various aspects of the present disclosure. As illustrated in FIG. 7B, the function representing the total MPE may be MPE_T may be the sum of two panel-specific MPE values MPE_0 and MPE_1 (e.g., MPE_T = MPE_0+MPE_1) .
[0119] Referring now to FIG. 8, FIG. 8 is a diagram 800 illustrating example transmit powers and MPEs when there are two uplink transmissions, in accordance with various aspects of the present disclosure. As mentioned herein, in some aspects, a total MPE value separate from two panel-specific MPE values may be used for determining the total configured maximum transmit power for the uplink transmission (s) . In some aspects, the total MPE value for the total configured maximum transmit power may be different from the panel-specific MPE value for panel specific transmit powers due to beamforming or panel orientation being in different directions. As illustrated in FIG. 8, the total MPE value for the total configured maximum transmit power may be different from the panel-specific MPE value for panel specific transmit powers due to the two uplink transmissions being in different directions (e.g., separated by ninety degrees) . In such aspects, the UE 602 may report two panel-specific MPE values and the total MPE value to the network entity 604 in PHR (s) 610 and the network entity 604.
[0120] In some aspects, there may be carrier aggregation (CA) or no CA between the first uplink transmission 612A and the second uplink transmission 612B. In some aspects, the UE 602 may be configured (e.g., indicated by the network entity 604) , with transmit powers associated with the first uplink transmission 612A and the second uplink transmission 612B. However, such transmit powers may not be suitable due to the indicated transmit powers exceeding (e.g., a function, such as a sum of the indicated transmit powers exceeding) the total configured maximum transmit power. In some aspects, if the UE 602 has configured a total configured maximum transmit power (e.g., across all panels / TRPs) , as part of 608, the UE 602 may determine UL transmit powers for first uplink transmission 612A and the second uplink transmission 612B depending on different scenarios such as the first uplink transmission 612A and the second uplink transmission 612B being: (1) a single STxMP UL channel using two panels in single CC, such as both of the first uplink transmission 612A and the second uplink transmission 612B subscriber data management (SDM) or single frequency network (SFN) PUSCH, (2) two UL channels using two panels in single CC, such as the first uplink transmission 612A and the second uplink transmission 612B being two PUSCHs for mDCI PUSCH in a same CC, (3) the first uplink transmission 612A and the second uplink transmission 612B being a first PUSCH in a first CC and a second PUSCH in a second CC, or (4) multiple UL channels using two panels in different CCs, such as the first uplink transmission 612A and the second uplink transmission 612B being a fallback PUSCH in one CC and a sDCI PUCCH and PUSCH in another CC.
[0121] In some aspects the first uplink transmission 612A and the second uplink transmission 612B are a single STxMP UL channel using two panels in single CC. In some of such aspects, the UE 602 may prioritize one UL channel for one panel, such as prioritize one of the lower TCI ID. For sDCI SDM / SFN PUSCH, the UE 602 may prioritize one TCI. In some aspects, when prioritizing one TCI, the UE 602 may drop the other UL transmission. In some aspects, when prioritizing one TCI, the UE 602 may transmit the other UL transmission for the other TCI with reduced (e.g., capped) transmit power. In some aspects, the UE 602 may back off (e.g., scale) the two transmit powers and may keep a power ratio for different uplink transmission for different TCIs and scale down the two transmit powers accordingly (e.g., based on indicated transmit powers indicated by the network entity 604) .
[0122] FIG. 9A is a diagram 900 illustrating example transmit power sharing scenario where a total maximum transmit power is smaller than a sum of a first transmit power for a first uplink transmission and a second transmit power of a second transmission, in accordance with various aspects of the present disclosure. As illustrated in FIG. 9A, a total maximum transmit power 902 may be smaller than a sum of an indicated transmit power 904 for a first panel and an indicated transmit power 906 for a second panel.
[0123] FIG. 9B is a diagram 910 illustrating example transmit power sharing where a second transmission is dropped, in accordance with various aspects of the present disclosure. As illustrated in FIG. 9B, a total maximum transmit power 912 may be smaller than a sum of an indicated transmit power 914 for a first panel and an indicated transmit power 916 for a second panel. The transmission associated with the indicated transmit power 916 may be dropped due to the UE prioritizing the transmission associated with the first panel.
[0124] FIG. 9C is a diagram 920 illustrating example transmit power sharing where the transmit power of a second transmission is reduced, in accordance with various aspects of the present disclosure. As illustrated in FIG. 9C, the transmit power 924 for a first panel may be non-reduced and the transmit power 926 for the second panel may be capped (e.g., reduced to not exceed) based on the total maximum transmit power 922. The transmission associated with the indicated transmit power 916 may be dropped due to the UE prioritizing the transmission associated with the first panel.
[0125] FIG. 9D is a diagram 940 illustrating example transmit power sharing where the first transmit power and the second transmit power are scaled down based on a ratio, in accordance with various aspects of the present disclosure. As illustrated in FIG. 9D, the transmit power 944 for a first panel may be reduced and the transmit power 946 for the second panel may also be reduced based on the total maximum transmit power 942. The reduced portion of both of the transmit powers may be based on a ratio between the transmit powers, such as based on the ratio between the indicated transmit powers in FIG. 9A.
[0126] In some aspects where the first uplink transmission 612A and the second uplink transmission 612B are two UL channels using two panels in single CC. In some of such aspects, the UE 602 may prioritize one UL channel for one panel, such as prioritize one of the lower TCI ID. For mDCI PUSCH (s) , the UE 602 may prioritize one TCI. In some aspects, when prioritizing, the UE 602 may drop the other UL transmission (e.g., as illustrated in FIG. 9B) . In some aspects, when prioritizing, the UE 602 may transmit the other UL transmission for the other TCI with reduced (e.g., capped) transmit power (e.g., as illustrated in FIG. 9C) . In some aspects, the UE 602 may back off (e.g., scale) the two transmit powers and may keep a power ratio for different uplink transmission for different TCIs and scale down the two transmit powers accordingly (e.g., based on indicated transmit powers indicated by the network entity 604 (e.g., as illustrated in FIG. 9D) . In some aspects, the UE 602 may prioritize one channel type, such as one of PUSCH with acknowledgment / non-acknowledgment (A / N) or PUSCH without A / N.
[0127] In some aspects where the first uplink transmission 612A and the second uplink transmission 612B are a first PUSCH in a first CC and a second PUSCH in a second CC.In some of such aspects, the UE 602 may prioritize one UL channel type, such as prioritize PRACH over PUCCH with A / N over other PUCCH or PUSCH. In some aspects, when prioritizing, the UE 602 may drop the other UL transmission (e.g., as illustrated in FIG. 9B) . In some aspects, when prioritizing, the UE 602 may transmit the other UL transmission for the other TCI with reduced (e.g., capped) transmit power (e.g., as illustrated in FIG. 9C) . In some aspects, the UE 602 may back off (e.g., scale) the two transmit powers and may keep a power ratio for different uplink transmission for different TCIs and scale down the two transmit powers accordingly (e.g., based on indicated transmit powers indicated by the network entity 604 (e.g., as illustrated in FIG. 9D) . In some aspects, the UE 602 may prioritize based on both UL panel and UL channel type. For example, the UE 602 may prioritize PUSCH with CSI for a first panel over a PUCCH with ACK for a second panel.
[0128] In some aspects where the first uplink transmission 612A and the second uplink transmission 612B are multiple UL channels using two panels in different CCs. In some of such aspects, the UE 602 may prioritize one UL channel type, such as prioritize PRACH over PUCCH with A / N over other PUCCH or PUSCH. In some aspects, when prioritizing, the UE 602 may drop the other UL transmission (e.g., as illustrated in FIG. 9B) . In some aspects, when prioritizing, the UE 602 may transmit the other UL transmission for the other TCI with reduced (e.g., capped) transmit power (e.g., as illustrated in FIG. 9C) . In some aspects, the UE 602 may back off (e.g., scale) the two transmit powers and may keep a power ratio for different uplink transmission for different TCIs and scale down the two transmit powers accordingly (e.g., based on indicated transmit powers indicated by the network entity 604 (e.g., as illustrated in FIG. 9D) . In some aspects, the UE 602 may prioritize based on both UL panel and UL channel type. For example, the UE 602 may prioritize PUSCH with CSI for a first panel over a PUCCH with ACK for a second panel.
[0129] In some aspects, when the UE 602 has configured a total configured maximum transmit power (e.g., across all panels / TRPs) , the UE 602 may be enabled to report PHR(s) 610 to the network entity 604. In some aspects, the UE 602 may report two-panel specific PHRs for two simultaneous UL channels by considering per-panel configured maximum transmit powers and MPE values (MPE_0, MPE_1) . Each PHR may be calculated with and the corresponding indicated power. In some aspects, the UE may not report total configured maximum transmit power and MPE_T in a PHR report (e.g., in the PHR (s) 610) . Referring now to FIG. 10A, FIG. 10A is a diagram 1000 illustrating example PHR reporting where two panel specific PHRs for two simultaneous UL channels by considering per-panel configured maximum transmit powers and MPE values (MPE_0, MPE_1) , in accordance with various aspects of the present disclosure. As illustrated in FIG. 10A, the UE may report based on per-panel configured maximum transmit powers and MPE values (MPE_0, MPE_1) . In an example PHR report, the field V may indicate if the values in the PHR is based on a real transmission or a reference format. For example, V=0 may indicate real transmission on PUSCH (Type 1 PHR) or PUCCH (Type 2 PHR) , while V=1 indicates the use of a reference format. The field P may indicate whether the MAC entity applies power back off due to power management.
[0130] In some aspects, the UE 602 may report a single PHR (e.g., in the PHR (s) 610) for two simultaneous UL channels (e.g., corresponding to the uplink transmission 612A and the uplink transmission 612B) . For example, assuming and are transmit powers for UL channel a and UL channel b in simultaneous transmissions, the single PHR may be calculated as and may be up to the network entity 604 to allocate the PH to two panels. Referring now to FIG. 10B, FIG. 10B is a diagram 1050 illustrating example PHR reporting where a single PHR is reported for two simultaneous UL channels, in accordance with various aspects of the present disclosure. As illustrated in FIG. 10B, the UE may report based on the total configured maximum transmit powers and a total MPE value (MPE_T) .
[0131] In some aspects, the UE 602 may report two per-panel PHRs, and a cross-panel PHR (e.g., for the total configured maximum transmit powers and a total MPE value) for two simultaneous UL channels (e.g., corresponding to the uplink transmission 612A and the uplink transmission 612B) . For example, three PHRs may be included in the PHR (s) 610 for the same CC in a single PHR reporting instance and the three PHRs may be: and Referring now to FIG. 10C, FIG. 10C is a diagram 1070 illustrating example PHR reporting where two per-panel PHRs and a cross channel PHR are reported for two simultaneous UL channels, in accordance with various aspects of the present disclosure. As illustrated in FIG. 10C, the UE may report based on the total configured maximum transmit powers and a total MPE value (MPE_T) and the per-panel configured maximum transmit powers and MPE values (MPE_0, MPE_1) .
[0132] In some aspects, the UE 602 may report two PHRs with a virtual power splitting for total configured transmit power for two simultaneous UL channels (e.g., corresponding to the uplink transmission 612A and the uplink transmission 612B) . Each PHR may be calculated with the allocated virtual transmit power For example, and In some aspects, the virtual power may be smaller than per-panel configured maximum transmit power. For example, and In some aspects, the virtual power splitting may be determined by the UE 602 and may be based on the sum of the virtual power being smaller than the total configured maximum transmit power: In some aspects, the virtual power splitting may be fixed (e.g., based on a configured percentage such as equally distributed among all panels) . Referring now to FIG. 10D, FIG. 10D is a diagram 1090 illustrating example PHR reporting where two per-panel PHRs with a virtual power splitting for total configured transmit power are reported for two simultaneous UL channels, in accordance with various aspects of the present disclosure. As illustrated in FIG. 10D, the UE may report based on the virtual power splitting.
[0133] FIG. 11 is a diagram 1100 illustrating example transmit power (s) and virtual transmit power (s) , in accordance with various aspects of the present disclosure. As illustrated in FIG. 11, the virtual power may be smaller than per-panel configured maximum transmit power. For example, and
[0134] FIG. 12 is a flowchart 1200 of a method of wireless communication. The method may be performed by a UE (e.g., the UE 104; the apparatus 1404) . The method may enable multi-panel / TRP simultaneous UL Tx power control for communications between a UE and a network entity.
[0135] At 1202, the UE may configure at least one maximum transmit power at the UE based on a total MPE. For example, the UE 602 may configure (e.g., at 606) at least one maximum transmit power at the UE based on a total MPE. In some aspects, 1202 may be performed by power component 198.
[0136] At 1208, the UE may transmit, to a network entity, at least one uplink transmission based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, where each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels. For example, the UE 602 may transmit, to a network entity 604, at least one uplink transmission (e.g., 612A / 612B) based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, where each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels. In some aspects, 1208 may be performed by power component 198.
[0137] FIG. 13 is a flowchart 1300 of a method of wireless communication. The method may be performed by a UE (e.g., the UE 104; the apparatus 1404) . The method may enable multi-panel / TRP simultaneous UL Tx power control for communications between a UE and a network entity.
[0138] At 1302, the UE may configure at least one maximum transmit power at the UE based on a total MPE. For example, the UE 602 may configure (e.g., at 606) at least one maximum transmit power at the UE based on a total MPE. In some aspects, 1302 may be performed by power component 198. In some aspects, the at least one maximum transmit power includes a set of maximum transmit powers, where each maximum transmit power of the set of maximum transmit powers is associated with a respective TRP of the set of TRPs or a respective panel of the set of panels. In some aspects, each maximum transmit power of the set of maximum transmit powers is based on one of: a TRP identifier (ID) associated with the respective TRP, a transmission configuration indicator (TCI) state group ID associated with the respective TRP or the respective panel, a transmit power control (TPC) ID associated with the respective TRP or the respective panel, a power amplifier ID associated with the respective TRP or the respective panel, a pathloss reference signal (PL RS) ID associated with the respective TRP or the respective panel, a closed-loop index associated with the respective TRP or the respective panel, a control resource set (CORESET) pool index associated with the respective TRP or the respective panel, a sounding reference signal (SRS) resource set ID associated with the respective TRP or the respective panel, a demodulation reference signal (DM-RS) port group ID associated with the respective TRP or the respective panel, a resource block allocation set ID associated with the respective TRP or the respective panel, or a physical cell ID (PCI) associated with the respective TRP or the respective panel. In some aspects, each maximum transmit power of the set of maximum transmit powers is smaller than or equal to a configured per-TRP / panel uplink transmit power, and where a sum of each maximum transmit power of the set of maximum transmit powers is smaller than or equal to a configured cell-level uplink transmit power. In some aspects, the at least one maximum transmit power includes a maximum total transmit power associated with the set of TRPs or the set of panels, where the maximum total transmit power associated with the set of TRPs or the set of panels is based on a configured cell-level uplink transmit power. In some aspects the at least one maximum transmit power includes a maximum total transmit power associated with the set of TRPs or the set of panels, where the maximum total transmit power associated with the set of TRPs or the set of panels is based on a configured cell-level uplink transmit power, the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and where a sum of the first transmit power and the second transmit power is smaller than the maximum total transmit power. In some aspects, the first MPE is smaller than the total MPE and the second MPE is smaller than the total MPE. In some aspects, a sum of the first MPE and the second MPE is smaller than the total MPE. In some aspects, the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and where a sum of the first MPE and the second MPE is separate from the total MPE.
[0139] At 1304, the UE may determine at least one transmit power. For example, the UE 602 may determine at least one transmit power at 608. In some aspects, 1304 may be performed by power component 198.
[0140] At 1306, the UE may transmit at least one PHR. For example, the UE 602 may transmit at least one PHR (e.g., 610) to the network entity 604. In some aspects, 1306 may be performed by power component 198. In some aspects where the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, the UE may transmit a first PHR report associated with the first TRP to report the first transmit power and the first MPE and transmit a second PHR report associated with the second TRP to report the second transmit power and the second MPE. In some aspects where the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, the UE may transmit a PHR report associated with the first TRP and the second TRP to report a value based on the total MPE, the first transmit power, and the second transmit power. In some aspects where the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, the UE may transmit a first PHR report associated with the first TRP to report the first transmit power and the first MPE, transmit a second PHR report associated with the second TRP to report the second transmit power and the second MPE, and transmit a third PHR report to report the total MPE. In some aspects where the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, the UE may transmit a first PHR report associated with the first TRP to report a first value based on the first transmit power and a virtual power and transmit a second PHR report associated with the second TRP to report a second value based on the second transmit power and the virtual power. In some aspects, the at least one uplink transmission includes a first uplink transmission based on a first panel of the set of panels and a second uplink transmission based on a second panel of the set of panels, where the first uplink transmission is based on a first transmit power and the second uplink transmission is based on a second transmit power, where the first uplink transmission is associated with a first uplink channel and the second uplink transmission is associated with a second uplink channel, and where the first uplink transmission is associated with a first CC and the second uplink transmission is associated with a second CC.
[0141] In some aspects, the UE may determine the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission. In some aspects, the UE may determine the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power. In some aspects, the UE may determine the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission. In some aspects, the UE may determine the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power. In some aspects, the UE may determine the first transmit power and the second transmit power based on a first channel type associated with the first uplink transmission and a second channel type associated with the first uplink transmission.
[0142] At 1308, the UE may transmit, to a network entity, at least one uplink transmission based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, where each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels. For example, the UE 602 may transmit, to a network entity 604, at least one uplink transmission (e.g., 612A / 612B) based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, where each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels. In some aspects, 1308 may be performed by power component 198. In some aspects, the at least one uplink transmission includes a first uplink transmission based on a first panel of the set of panels and a second uplink transmission based on a second panel of the set of panels, where the first uplink transmission is based on a first transmit power and the second uplink transmission is based on a second transmit power, and where the first uplink transmission and the second uplink transmission is associated with a same uplink channel and a same component carrier (CC) .
[0143] FIG. 14 is a diagram 1400 illustrating an example of a hardware implementation for an apparatus 1404. The apparatus 1404 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus1404 may include at least one cellular baseband processor 1424 (also referred to as a modem) coupled to one or more transceivers 1422 (e.g., cellular RF transceiver) . The cellular baseband processor (s) 1424 may include at least one on-chip memory 1424'. In some aspects, the apparatus 1404 may further include one or more subscriber identity modules (SIM) cards 1420 and at least one application processor 1406 coupled to a secure digital (SD) card 1408 and a screen 1410. The application processor (s) 1406 may include on-chip memory 1406'. In some aspects, the apparatus 1404 may further include a Bluetooth module 1412, a WLAN module 1414, an SPS module 1416 (e.g., GNSS module) , one or more sensor modules 1418 (e.g., barometric pressure sensor / altimeter; motion sensor such as inertial measurement unit (IMU) , gyroscope, and / or accelerometer (s) ; light detection and ranging (LIDAR) , radio assisted detection and ranging (RADAR) , sound navigation and ranging (SONAR) , magnetometer, audio and / or other technologies used for positioning) , additional memory modules 1426, a power supply 1430, and / or a camera 1432. The Bluetooth module 1412, the WLAN module 1414, and the SPS module 1416 may include an on-chip transceiver (TRX) (or in some cases, just a receiver (RX) ) . The Bluetooth module 1412, the WLAN module 1414, and the SPS module 1416 may include their own dedicated antennas and / or utilize the antennas 1480 for communication. The cellular baseband processor (s) 1424 communicates through the transceiver (s) 1422 via one or more antennas 1480 with the UE 104 and / or with an RU associated with a network entity 1402. The cellular baseband processor (s) 1424 and the application processor (s) 1406 may each include a computer-readable medium / memory 1424', 1406', respectively. The additional memory modules 1426 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 1424', 1406', 1426 may be non-transitory. The cellular baseband processor (s) 1424 and the application processor (s) 1406 are each responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor (s) 1424 / application processor (s) 1406, causes the cellular baseband processor (s) 1424 / application processor (s) 1406 to perform the various functions described supra. The computer-readable medium / memory may also be used for storing data that is manipulated by the cellular baseband processor (s) 1424 / application processor (s) 1406 when executing software. The cellular baseband processor (s) 1424 / application processor (s) 1406 may be a component of the UE 350 and may include the at least one memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the apparatus 1404 may be at least one processor chip (modem and / or application) and include just the cellular baseband processor (s) 1424 and / or the application processor (s) 1406, and in another configuration, the apparatus 1404 may be the entire UE (e.g., see UE 350 of FIG. 3) and include the additional modules of the apparatus 1404.
[0144] As discussed supra, the power component 198 may be configured to configure at least one maximum transmit power at the UE based on a total maximum permissible exposure (MPE) . In some aspects, the power component 198 may be further configured to transmit, to a network entity, at least one uplink transmission based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, where each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels. The power component 198 may be within the cellular baseband processor (s) 1424, the application processor (s) 1406, or both the cellular baseband processor (s) 1424 and the application processor (s) 1406. The component 198 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. As shown, the apparatus 1404 may include a variety of components configured for various functions. In one configuration, the apparatus 1404, and in particular the cellular baseband processor (s) 1424 and / or the application processor (s) 1406, may include means for configuring at least one maximum transmit power at the UE based on a total maximum permissible exposure (MPE) . In some aspects, the apparatus 1404 may include means for transmitting, to a network entity, at least one uplink transmission based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, where each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels. In some aspects, the apparatus 1404 may include means for transmitting a first power headroom (PHR) report associated with the first TRP to report the first transmit power and the first MPE. In some aspects, the apparatus 1404 may include means for transmitting a second PHR report associated with the second TRP to report the second transmit power and the second MPE. In some aspects, the apparatus 1404 may include means for transmitting a power headroom (PHR) report associated with the first TRP and the second TRP to report a value based on the total MPE, the first transmit power, and the second transmit power. In some aspects, the apparatus 1404 may include means for transmitting a first power headroom (PHR) report associated with the first TRP to report the first transmit power and the first MPE. In some aspects, the apparatus 1404 may include means for transmitting a second PHR report associated with the second TRP to report the second transmit power and the second MPE. In some aspects, the apparatus 1404 may include means for transmitting a third PHR report to report the total MPE. In some aspects, the apparatus 1404 may include means for transmitting a third PHR report to report the total MPE. In some aspects, the apparatus 1404 may include means for transmitting a first power headroom (PHR) report associated with the first TRP to report a first value based on the first transmit power and a virtual power. In some aspects, the apparatus 1404 may include means for transmitting a second PHR report associated with the second TRP to report a second value based on the second transmit power and the virtual power. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on a first channel type associated with the first uplink transmission and a second channel type associated with the first uplink transmission. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on a first channel type associated with the first uplink transmission and a second channel type associated with the first uplink transmission. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on prioritizing the first uplink transmission, the first uplink transmission being based on a single panel. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power. In some aspects, the apparatus 1404 may include means for determining the first transmit power and the second transmit power based on a first channel type associated with the first uplink transmission and a second channel type associated with the first uplink transmission. The means may be the component 198 of the apparatus 1404 configured to perform the functions recited by the means. As described supra, the apparatus 1404 may include the TX processor 368, the RX processor 356, and the controller / processor 359. As such, in one configuration, the means may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the means.
[0145] It is understood that the specific order or hierarchy of blocks in the processes / flowcharts disclosed is an illustration of example approaches. Based upon design preferences, it is understood that the specific order or hierarchy of blocks in the processes / flowcharts may be rearranged. Further, some blocks may be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order, and are not limited to the specific order or hierarchy presented.
[0146] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not limited to the aspects described herein, but are to be accorded the full scope consistent with the language claims. Reference to an element in the singular does not mean “one and only one” unless specifically so stated, but rather “one or more. ” Terms such as “if, ” “when, ” and “while” do not imply an immediate temporal relationship or reaction. That is, these phrases, e.g., “when, ” do not imply an immediate action in response to or during the occurrence of an action, but simply imply that if a condition is met then an action will occur, but without requiring a specific or immediate time constraint for the action to occur. The word “exemplary” is used herein to mean “serving as an example, instance, or illustration. ” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, the term “some” refers to one or more. Combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” include any combination of A, B, and / or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C. Sets should be interpreted as a set of elements where the elements number one or more. Accordingly, for a set of X, X would include one or more elements. When at least one processor is configured to perform a set of functions, the at least one processor, individually or in any combination, is configured to perform the set of functions. Accordingly, each processor of the at least one processor may be configured to perform a particular subset of the set of functions, where the subset is the full set, a proper subset of the set, or an empty subset of the set. If a first apparatus receives data from or transmits data to a second apparatus, the data may be received / transmitted directly between the first and second apparatuses, or indirectly between the first and second apparatuses through a set of apparatuses. A device configured to “output” data, such as a transmission, signal, or message, may transmit the data, for example with a transceiver, or may send the data to a device that transmits the data. A device configured to “obtain” data, such as a transmission, signal, or message, may receive, for example with a transceiver, or may obtain the data from a device that receives the data. Information stored in a memory includes instructions and / or data. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are encompassed by the claims. Moreover, nothing disclosed herein is dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. The words “module, ” “mechanism, ” “element, ” “device, ” and the like may not be a substitute for the word “means. ” As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase “means for. ”
[0147] As used herein, the phrase “based on” shall not be construed as a reference to a closed set of information, one or more conditions, one or more factors, or the like. In other words, the phrase “based on A” (where “A” may be information, a condition, a factor, or the like) shall be construed as “based at least on A” unless specifically recited differently.
[0148] The following aspects are illustrative only and may be combined with other aspects or teachings described herein, without limitation.
[0149] Aspect 1 is a method for wireless communication performed a user equipment (UE) , including: configuring at least one maximum transmit power at the UE based on a total maximum permissible exposure (MPE) ; and transmitting, to a network entity, at least one uplink transmission based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, where each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels.
[0150] Aspect 2 is the method of aspect 1, where the at least one maximum transmit power includes a set of maximum transmit powers, where each maximum transmit power of the set of maximum transmit powers is associated with the respective TRP of the set of TRPs or the respective panel of the set of panels.
[0151] Aspect 3 is the method of aspect 2, where each maximum transmit power of the set of maximum transmit powers is based on one of: a TRP identifier (ID) associated with the respective TRP, a transmission configuration indicator (TCI) state group ID associated with the respective TRP or the respective panel, a transmit power control (TPC) ID associated with the respective TRP or the respective panel, a power amplifier ID associated with the respective TRP or the respective panel, a pathloss reference signal (PL RS) ID associated with the respective TRP or the respective panel, a closed-loop index associated with the respective TRP or the respective panel, a control resource set (CORESET) pool index associated with the respective TRP or the respective panel, a sounding reference signal (SRS) resource set ID associated with the respective TRP or the respective panel, a demodulation reference signal (DM-RS) port group ID associated with the respective TRP or the respective panel, a resource block allocation set ID associated with the respective TRP or the respective panel, or a physical cell ID (PCI) associated with the respective TRP or the respective panel.
[0152] Aspect 4 is the method of any of aspects 2-3, where each maximum transmit power of the set of maximum transmit powers is smaller than or equal to a configured per-TRP / panel uplink transmit power, and where a sum of each maximum transmit power of the set of maximum transmit powers is smaller than or equal to a configured cell-level uplink transmit power.
[0153] Aspect 5 is the method of any of aspects 1-4, where the at least one maximum transmit power includes a maximum total transmit power associated with the set of TRPs or the set of panels, where the maximum total transmit power associated with the set of TRPs or the set of panels is based on a configured cell-level uplink transmit power.
[0154] Aspect 6 is the method of aspect 5, where the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and where a sum of the first transmit power and the second transmit power is smaller than the maximum total transmit power.
[0155] Aspect 7 is the method of aspect 6, where the first MPE is smaller than the total MPE and the second MPE is smaller than the total MPE.
[0156] Aspect 8 is the method of aspect 6, where an MPE sum of the first MPE and the second MPE is smaller than the total MPE.
[0157] Aspect 9 is the method of any of aspects 5-8, where the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and where a sum of the first MPE and the second MPE is separate from the total MPE.
[0158] Aspect 10 is the method of any of aspects 5-8, where the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and further including: transmitting a first power headroom (PHR) report associated with the first TRP to report the first transmit power and the first MPE, and transmitting a second PHR report associated with the second TRP to report the second transmit power and the second MPE.
[0159] Aspect 11 is the method of any of aspects 5-8, where the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and further including: transmitting a power headroom (PHR) report associated with the first TRP and the second TRP to report a value based on the total MPE, the first transmit power, and the second transmit power.
[0160] Aspect 12 is the method of any of aspects 5-8, where the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and further including: transmitting a first power headroom (PHR) report associated with the first TRP to report the first transmit power and the first MPE, transmitting a second PHR report associated with the second TRP to report the second transmit power and the second MPE; and transmitting a third PHR report to report the total MPE.
[0161] Aspect 13 is the method of any of aspects 5-8, where the at least one uplink transmission includes a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, where a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and further including: transmitting a first power headroom (PHR) report associated with the first TRP to report a first value based on the first transmit power and a virtual power, and transmitting a second PHR report associated with the second TRP to report a second value based on the second transmit power and the virtual power.
[0162] Aspect 14 is the method of any of aspects 5-13, where the at least one uplink transmission includes a first uplink transmission based on a first panel of the set of panels and a second uplink transmission based on a second panel of the set of panels, where the first uplink transmission is based on a first transmit power and the second uplink transmission is based on a second transmit power, and where the first uplink transmission and the second uplink transmission is associated with a same uplink channel and a same component carrier (CC) .
[0163] Aspect 15 is the method of aspect 14, further including: determining the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission.
[0164] Aspect 16 is the method of aspect 14, further including: determining the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power.
[0165] Aspect 17 is the method of any of aspects 5-16, where the at least one uplink transmission includes a first uplink transmission based on a first panel of the set of panels and a second uplink transmission based on a second panel of the set of panels, where the first uplink transmission is based on a first transmit power and the second uplink transmission is based on a second transmit power, where the first uplink transmission is associated with a first uplink channel and the second uplink transmission is associated with a second uplink channel, and where the first uplink transmission and the second uplink transmission is a same component carrier (CC) .
[0166] Aspect 18 is the method of aspect 17, further including: determining the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission.
[0167] Aspect 19 is the method of any of aspects 17-18, further including: determining the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power.
[0168] Aspect 20 is the method of any of aspects 17-19, further including: determining the first transmit power and the second transmit power based on a first channel type associated with the first uplink transmission and a second channel type associated with the first uplink transmission.
[0169] Aspect 21 is the method of any of aspects 5-20, where the at least one uplink transmission includes a first uplink transmission based on a first panel of the set of panels and a second uplink transmission based on a second panel of the set of panels, where the first uplink transmission is based on a first transmit power and the second uplink transmission is based on a second transmit power, where the first uplink transmission is associated with a first uplink channel and the second uplink transmission is associated with a second uplink channel, and where the first uplink transmission is associated with a first component carrier (CC) and the second uplink transmission is associated with a second CC.
[0170] Aspect 22 is the method of aspect 21, further including: determining the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission.
[0171] Aspect 23 is the method of any of aspects 5-22, further including: determining the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power.
[0172] Aspect 24 is the method of any of aspects 5-23, further including: determining the first transmit power and the second transmit power based on a first channel type associated with the first uplink transmission and a second channel type associated with the first uplink transmission.
[0173] Aspect 25 is the method of any of aspects 5-24, where the at least one uplink transmission includes a first uplink transmission based on a first panel of the set of panels and a second uplink transmission based on the first panel and a second panel of the set of panels, where the first uplink transmission is based on a first transmit power and the second uplink transmission is based on a second transmit power, where the first uplink transmission is associated with a first uplink channel and the second uplink transmission is associated with a second uplink channel, and where the first uplink transmission is associated with a first component carrier (CC) and the second uplink transmission is associated with a second CC.
[0174] Aspect 26 is the method of aspect 25, further including: determining the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission.
[0175] Aspect 27 is the method of any of aspects 25-26, further including: determining the first transmit power and the second transmit power based on prioritizing the first uplink transmission, the first uplink transmission being based on a single panel.
[0176] Aspect 28 is the method of any of aspects 25-27, further including: determining the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power.
[0177] Aspect 29 is the method of any of aspects 25-28, further including: determining the first transmit power and the second transmit power based on a first channel type associated with the first uplink transmission and a second channel type associated with the first uplink transmission.
[0178] Aspect 30 is an apparatus for wireless communication at a device including at least one memory and at least one processor coupled to the at least one memory and, the at least one processor, individually or in any combination, based at least in part on information stored in the at least one memory, the at least one processor is configured to implement any of aspects 1 to 29.
[0179] Aspect 31 is the apparatus of aspect 30, further including one or more transceivers or one or more antennas coupled to the at least one processor.
[0180] Aspect 32 is an apparatus for wireless communication at a device including means for implementing any of aspects 1 to 29.
[0181] Aspect 33 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer executable code, where the code when executed by at least one processor causes the at least one processor to implement any of aspects 1 to 29.
Claims
1.An apparatus for wireless communication at a user equipment (UE) , comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to cause the UE to:configure at least one maximum transmit power at the UE based on a total maximum permissible exposure (MPE) ; andtransmit, to a network entity, at least one uplink transmission based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, wherein each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels.2.The apparatus of claim 1, wherein the at least one maximum transmit power comprises a set of maximum transmit powers, wherein each maximum transmit power of the set of maximum transmit powers is associated with the respective TRP of the set of TRPs or the respective panel of the set of panels.3.The apparatus of claim 2, wherein each maximum transmit power of the set of maximum transmit powers is based on one of:a TRP identifier (ID) associated with the respective TRP,a transmission configuration indicator (TCI) state group ID associated with the respective TRP or the respective panel,a transmit power control (TPC) ID associated with the respective TRP or the respective panel,a power amplifier ID associated with the respective TRP or the respective panel,a pathloss reference signal (PL RS) ID associated with the respective TRP or the respective panel,a closed-loop index associated with the respective TRP or the respective panel,a control resource set (CORESET) pool index associated with the respective TRP or the respective panel,a sounding reference signal (SRS) resource set ID associated with the respective TRP or the respective panel,a demodulation reference signal (DM-RS) port group ID associated with the respective TRP or the respective panel,a resource block allocation set ID associated with the respective TRP or the respective panel, ora physical cell ID (PCI) associated with the respective TRP or the respective panel.4.The apparatus of claim 2, wherein each maximum transmit power of the set of maximum transmit powers is smaller than or equal to a configured per-TRP / panel uplink transmit power, and wherein a sum of each maximum transmit power of the set of maximum transmit powers is smaller than or equal to a configured cell-level uplink transmit power.5.The apparatus of claim 1, wherein the at least one maximum transmit power comprises a maximum total transmit power associated with the set of TRPs or the set of panels, wherein the maximum total transmit power associated with the set of TRPs or the set of panels is based on a configured cell-level uplink transmit power.6.The apparatus of claim 5, wherein the at least one uplink transmission comprises a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, wherein a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and wherein a sum of the first transmit power and the second transmit power is smaller than the maximum total transmit power.7.The apparatus of claim 6, wherein the first MPE is smaller than the total MPE and the second MPE is smaller than the total MPE.8.The apparatus of claim 6, wherein an MPE sum of the first MPE and the second MPE is smaller than the total MPE.9.The apparatus of claim 5, wherein the at least one uplink transmission comprises a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, wherein a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and wherein a sum of the first MPE and the second MPE is separate from the total MPE.10.The apparatus of claim 5, wherein the at least one uplink transmission comprises a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, wherein a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and wherein the at least one processor is configured to:transmit a first power headroom (PHR) report associated with the first TRP to report the first transmit power and the first MPE, andtransmit a second PHR report associated with the second TRP to report the second transmit power and the second MPE.11.The apparatus of claim 5, wherein the at least one uplink transmission comprises a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, wherein a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and wherein the at least one processor is configured to:transmit a power headroom (PHR) report associated with the first TRP and the second TRP to report a value based on the total MPE, the first transmit power, and the second transmit power.12.The apparatus of claim 5, wherein the at least one uplink transmission comprises a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, wherein a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and wherein the at least one processor is configured to:transmit a first power headroom (PHR) report associated with the first TRP to report the first transmit power and the first MPE,transmit a second PHR report associated with the second TRP to report the second transmit power and the second MPE; andtransmit a third PHR report to report the total MPE.13.The apparatus of claim 5, wherein the at least one uplink transmission comprises a first uplink transmission to a first TRP of the set of TRPs and a second uplink transmission to a second TRP of the set of TRPs, wherein a first transmit power associated with the first uplink transmission is based on a first MPE associated with the first TRP and a second transmit power associated with the second uplink transmission is based on a second MPE associated with the second TRP, and wherein the at least one processor is configured to:transmit a first power headroom (PHR) report associated with the first TRP to report a first value based on the first transmit power and a virtual power, andtransmit a second PHR report associated with the second TRP to report a second value based on the second transmit power and the virtual power.14.The apparatus of claim 5, wherein the at least one uplink transmission comprises a first uplink transmission based on a first panel of the set of panels and a second uplink transmission based on a second panel of the set of panels, wherein the first uplink transmission is based on a first transmit power and the second uplink transmission is based on a second transmit power, and wherein the first uplink transmission and the second uplink transmission is associated with a same uplink channel and a same component carrier (CC) .15.The apparatus of claim 14, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission.16.The apparatus of claim 14, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power.17.The apparatus of claim 5, wherein the at least one uplink transmission comprises a first uplink transmission based on a first panel of the set of panels and a second uplink transmission based on a second panel of the set of panels, wherein the first uplink transmission is based on a first transmit power and the second uplink transmission is based on a second transmit power, wherein the first uplink transmission is associated with a first uplink channel and the second uplink transmission is associated with a second uplink channel, and wherein the first uplink transmission and the second uplink transmission is a same component carrier (CC) .18.The apparatus of claim 17, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission.19.The apparatus of claim 17, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power.20.The apparatus of claim 17, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on a first channel type associated with the first uplink transmission and a second channel type associated with the first uplink transmission.21.The apparatus of claim 5, wherein the at least one uplink transmission comprises a first uplink transmission based on a first panel of the set of panels and a second uplink transmission based on a second panel of the set of panels, wherein the first uplink transmission is based on a first transmit power and the second uplink transmission is based on a second transmit power, wherein the first uplink transmission is associated with a first uplink channel and the second uplink transmission is associated with a second uplink channel, and wherein the first uplink transmission is associated with a first component carrier (CC) and the second uplink transmission is associated with a second CC.22.The apparatus of claim 21, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission.23.The apparatus of claim 21, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power.24.The apparatus of claim 21, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on a first channel type associated with the first uplink transmission and a second channel type associated with the first uplink transmission.25.The apparatus of claim 5, wherein the at least one uplink transmission comprises a first uplink transmission based on a first panel of the set of panels and a second uplink transmission based on the first panel and a second panel of the set of panels, wherein the first uplink transmission is based on a first transmit power and the second uplink transmission is based on a second transmit power, wherein the first uplink transmission is associated with a first uplink channel and the second uplink transmission is associated with a second uplink channel, and wherein the first uplink transmission is associated with a first component carrier (CC) and the second uplink transmission is associated with a second CC.26.The apparatus of claim 25, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on prioritizing one of the first uplink transmission or the second uplink transmission.27.The apparatus of claim 25, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on prioritizing the first uplink transmission, the first uplink transmission being based on a single panel.28.The apparatus of claim 25, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on a ratio between the first transmit power and the second transmit power.29.The apparatus of claim 25, wherein the at least one processor is configured to:determine the first transmit power and the second transmit power based on a first channel type associated with the first uplink transmission and a second channel type associated with the first uplink transmission.30.A method for wireless communication performed by a user equipment (UE) , comprising:configuring at least one maximum transmit power at the UE based on a total maximum permissible exposure (MPE) ; andtransmitting, to a network entity, at least one uplink transmission based on the at least one maximum transmit power and a set of power control parameters associated with a set of TRPs or a set of panels, wherein each power control parameter of the set of power control parameters is associated a respective TRP of the set of TRPs or a respective panel of the set of panels.