Channel-specific maximum permissible exposure report

Abstract

To enable UE to generate and transmit a channel-specific MPE report that includes reporting information at a channel-specific level.SOLUTION: In a wireless communication system, user equipment (UE) 120 generates 302 a maximum permissible exposure (MPE) report for a subset of uplink channels included in a set of uplink channels to be used by the UE for transmitting uplink transmissions. Here, the MPE report includes MPE reporting information for the subset of uplink channels, and identifiers associated with each uplink channel in the subset of uplink channels. The UE further transmits 304 the MPE report associated with the subset of uplink channels to a base station 110.SELECTED DRAWING: Figure 3A

Description

[Technical Field]

[0001] Aspects of the present disclosure relate generally to wireless communications, and more particularly to techniques and apparatus for channel-specific maximum allowable exposure reporting. [Background technology]

[0002] 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 (e.g., bandwidth or transmit power). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is a set of extensions to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the 3rd Generation Partnership Project (3GPP).

[0003]

[0003] The above multiple access technologies have been adopted in various telecommunications standards to provide common protocols that enable different user equipment (UE) devices to communicate on a city, national, regional, or even global scale. New Radio (NR), sometimes referred to as 5G, is a set of extensions to the LTE mobile standard promulgated by 3GPP. NR is designed to improve spectral efficiency, lower costs, improve service, utilize new spectrum, and better support mobile broadband Internet access by using orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP-OFDM) on the downlink (DL) and CP-OFDM or SC-FDMA (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), better integrating with other open standards, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. However, as demand for mobile broadband access continues to increase, further improvements to LTE and NR technologies are needed. Preferably, these improvements are applicable to other multiple access technologies and the telecommunications standards that employ these technologies.

[0004]

[0004] To limit user exposure to radio frequency (RF) radiation, regulatory exposure limits may be imposed on wireless communication devices, such as UEs. For example, to limit user exposure to RF radiation, a maximum permissible exposure (MPE) may be imposed on UEs operating in frequency bands above 6 GHz. Generally, a UE is configured with a detector capable of detecting occurrences of UE exposure exceeding the MPE (referred to herein as an MPE event). Upon detection of an MPE event, the UE may implement mitigation, such as applying a power reduction to the UE's uplink transmissions. The UE may also need to send an MPE report to the BS to provide information that enables the BS to appropriately schedule the UE for upcoming communication based on the power reduction applied by the UE. However, traditional MPE reporting is cell-specific, and the reported metrics are common to all panels of the UE. Therefore, conventional MPE reporting is insufficient in wireless communication systems where a transmission configuration indicator (TCI) framework utilizes separate TCI states to accommodate separate beam instructions for uplink and downlink beams. Summary of the Invention

[0005] In some aspects, a user equipment (UE) for wireless communication includes a memory and one or more processors operatively coupled to the memory, wherein the memory and the one or more processors are configured to generate a maximum permissible exposure (MPE) report for a subset of uplink channels included in a set of uplink channels to be used by the UE to transmit an uplink transmission, wherein the MPE report includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated. The memory and the one or more processors transmit the MPE report associated with the subset of uplink channels to a base station.

[0006] In some aspects, a method of wireless communications performed by a UE includes generating an MPE report for a subset of uplink channels included in a set of uplink channels to be used by the UE to transmit an uplink transmission, where the MPE report includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated, and transmitting the MPE report associated with the subset of uplink channels to a base station.

[0007] In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communications includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to generate an MPE report for a subset of uplink channels included in a set of uplink channels to be used by the UE to transmit an uplink transmission, wherein the MPE report includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated. The one or more instructions cause the UE to transmit the MPE report associated with the subset of uplink channels to a base station.

[0008] In some aspects, an apparatus for wireless communication includes means for generating an MPE report for a subset of uplink channels included in a set of uplink channels to be used by the apparatus to transmit an uplink transmission, where the MPE report includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated. The apparatus includes means for transmitting the MPE report associated with the subset of uplink channels to a base station.

[0009]

[0009] Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, or processing system substantially as described with reference to and as indicated by the drawings and specification.

[0010] The foregoing has outlined rather broadly the features and technical advantages of examples according to the present disclosure so that the following detailed description may be better understood. Additional features and advantages are described below. The concepts and examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The nature of the concepts disclosed herein, both their organization and method of operation, together with associated advantages, will be better understood from the following description when considered in conjunction with the accompanying figures. Each of the figures is provided for the purpose of illustration and description, and not as a definition of the limits of the claims.

[0011]

[0011] So that the above-described features of the present disclosure may be understood in detail, a more particular description briefly summarized above may be had by reference to embodiments, some of which are illustrated in the accompanying drawings. It should be noted, however, that the accompanying drawings illustrate only some typical embodiments of the present disclosure, and therefore should not be considered as limiting the scope of the present disclosure, as the description may allow for other equally effective embodiments. The same reference numerals in different drawings may identify the same or similar elements. [Brief explanation of the drawings]

[0012] [Figure 1]

[0012] FIG. 1 illustrates an example of a wireless network in accordance with various aspects of the present disclosure. [Figure 2]

[0013] FIG. 1 illustrates an example base station (BS) in communication with a user equipment (UE) in a wireless network, in accordance with various aspects of the present disclosure. [Figure 3A]

[0014] FIG. 1 illustrates an example relating to channel-specific maximum permissible exposure (MPE) reporting, in accordance with various aspects of the present disclosure. [Figure 3B] FIG. 1 illustrates an example relating to channel-specific maximum permissible exposure (MPE) reporting, in accordance with various aspects of the present disclosure. [Figure 4]

[0015] 1 is a flowchart illustrating an example process, for example, performed by a UE that supports channel-specific MPE reporting, in accordance with various aspects of the present disclosure. [Figure 5]

[0016] FIG. 1 is a block diagram of an example apparatus for wireless communication supporting channel-specific MPE reporting, in accordance with various aspects of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0013]

[0017] Various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure may be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of the present disclosure covers any aspect of the present disclosure disclosed herein, whether implemented independently of or in combination with other aspects of the present disclosure. For example, an apparatus may be implemented or a method may be practiced using any amount of the aspects described herein. Furthermore, the scope of the present disclosure is intended to cover such apparatus or methods implemented using other structure, functions, or structure and functions in addition to or other than the various aspects of the present disclosure described herein. Any aspect of the present disclosure disclosed herein may be embodied by one or more elements of a claim.

[0014]

[0018] Several aspects of telecommunications systems are presented next with reference to various apparatus and techniques. These apparatus and techniques are described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, or algorithms (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination of hardware and software. Whether such elements are implemented as hardware or software depends on the particular application and design constraints imposed on the overall system.

[0015]

[0019] Various aspects generally relate to channel-specific maximum permissible exposure (MPE) reporting. Some aspects, more particularly, relate to a UE generating and transmitting an MPE report that includes report information for a subset of one or more uplink channels included in a set of uplink channels that may be used by the UE to transmit uplink transmissions, as well as an identifier with which each uplink channel of the subset of uplink channels is associated. In some aspects, the identifier may be, for example, an uplink channel type identifier, an uplink panel identifier, an uplink transmission configuration indicator (TCI) identifier, or a path loss reference signal (PL-RS) identifier. In some aspects, the MPE report information may include a value for a metric specific to the subset of uplink channels.

[0016]

[0020] Certain aspects of the subject matter described in this disclosure may be implemented to achieve one or more of the following potential advantages: In some examples, the described techniques enable a UE to generate and transmit a channel-specific MPE report that includes report information at a channel-specific level. In some aspects, transmitting MPE report information at a channel-specific level enables a BS to be provided with sufficient information to appropriately respond to mitigation actions taken by the UE after detection of an MPE event, thereby improving communication between the UE and the BS. For example, the BS may schedule the UE's uplink communication with a sufficient amount of resource blocks (RBs) based on the power reduction indicated in the MPE report as being applied by the UE, which can improve the reliability of communication between the UE and the BS.

[0017]

[0021] FIG. 1 illustrates an example of a wireless network in accordance with various aspects of the present disclosure. The wireless network may be or include elements of a 5G (NR) network or an LTE network, among other examples. The wireless network may include one or more base stations 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with user equipment (UE) and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, or transmit / receive point (TRP), among other examples. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" can refer to the coverage area of ​​a BS or a BS subsystem serving this coverage area, depending on the context in which the term is used.

[0018]

[0022] A BS may provide communication coverage for a macrocell, a picocell, a femtocell, or another type of cell. A macrocell may cover a relatively large geographic area (e.g., a few kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A picocell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femtocell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs that have an association with the femtocell (e.g., UEs in a Closed Subscriber Group (CSG)). A BS for a macrocell may be referred to as a macroBS. A BS for a picocell may be referred to as a picoBS. A BS for a femtocell may be referred to as a femtoBS or homeBS. A BS may support one or more (e.g., three) cells.

[0019]

[0023] A wireless network may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, or relay BSs. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network. For example, a macro BS may have a high transmit power level (e.g., 5-40 watts), while pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1-2 watts). In the example shown in FIG. 1, BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A network controller 130 may couple to the set of BSs 102a, 102b, 110a, and 110b and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with one another directly or indirectly, eg, via wireless or wireline backhaul.

[0020]

[0024] In some aspects, the cells may not be fixed; rather, the geographic area of ​​the cells may move according to the location of the mobile BS. In some aspects, the BSs may be interconnected to each other or to one or more other BSs or network nodes (not shown) in the wireless network through various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

[0021]

[0025] A wireless network may also include relay stations. A relay station is an entity that can receive a data transmission from an upstream station (e.g., a BS or UE) and send the data transmission to a downstream station (e.g., a UE or BS). A relay station may also be a UE that can relay transmissions for other UEs. In the example shown in FIG. 1, relay BS 110d may communicate with macro BS 110a and UE 120d to enable communication between BS 110a and UE 120d. A relay BS may also be referred to as a relay station, relay base station, or relay, among other examples.

[0022]

[0026] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout a wireless network, and each UE may be fixed or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, or station, among other examples. A UE may be a cellular phone (e.g., a smartphone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate over a wireless medium.

[0023]

[0027] Some UEs may be considered machine type communication (MTC) UEs or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and eMTC UEs include, among examples, a robot, a drone, a remote device, a sensor, a meter, a monitor, or a location tag that may communicate with, for example, a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered Customer Premises Equipment (CPE). The UE 120 may be included in a housing that stores components of the UE 120, such as processor components or memory components, among examples.

[0024]

[0028] Generally, any amount of wireless networks may be deployed in a given geographic area. Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies or frequency channels. A frequency may also be referred to as a carrier, among other examples. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0025]

[0029] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly with each other (e.g., without using a base station 110 as an intermediary for communicating with each other) using one or more sidelink channels. For example, the UEs 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, a vehicle-to-anything (V2X) protocol (which may include, e.g., a vehicle-to-vehicle (V2V) protocol or a vehicle-to-infrastructure (V2I) protocol), a mesh network, or a combination thereof. In such examples, the UEs 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the base station 110.

[0026]

[0030] Devices of a wireless network may communicate using an electromagnetic spectrum, which may be subdivided into various classes, bands, or channels based on frequency or wavelength. For example, devices of a wireless network may communicate using an operating band having a first frequency range (FR1), which may range from 410 MHz to 7.125 gigahertz (GHz). As another example, devices of a wireless network may communicate using an operating band having a second frequency range (FR2), which may range from 24.25 GHz to 52.6 GHz. Frequencies between FR1 and FR2 are sometimes referred to as mid-band frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as the "sub-6 GHz" band. Similarly, FR2 is often referred to as "millimeter wave" even though it is different from the extremely high frequency (EHF) band (30 GHz to 300 GHz), which is identified as the "millimeter wave" band by the International Telecommunications Union (ITU). Thus, unless otherwise specified, it should be understood that the term "sub-6 GHz" can broadly refer to frequencies below 6 GHz, frequencies within FR1, mid-band frequencies (e.g., greater than 7.125 GHz), or a combination thereof. Similarly, unless otherwise specified, it should be understood that the term "millimeter wave" can broadly refer to frequencies within the EHF band, frequencies within FR2, mid-band frequencies (e.g., less than 24.25 GHz), or a combination thereof. The frequencies included within FR1 and FR2 may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0027]

[0031] 2 is a diagram illustrating an example base station in communication with a UE in a wireless network in accordance with various aspects of the present disclosure. The base station may correspond to base station 110 of FIG. 1. Similarly, the UE may correspond to UE 120 of FIG. 1.

[0028]

[0032] Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≧1 and R≧1. At base station 110, transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCSs) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode) the data for each UE based at least in part on the MCS(es) selected for that UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information and control information (e.g., CQI requests, grants, or higher layer signaling) (e.g., for semi-static resource partitioning information (SRPI), among other examples) and provide overhead symbols and control symbols. Transmit processor 220 may also generate reference symbols for reference signals and synchronization signals. The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each MOD 232 may process a respective output symbol stream (e.g., for OFDM, among other examples) to obtain an output sample stream. Each MOD 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. The T downlink signals from MODs 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.

[0029]

[0033] At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 or other base stations and may provide received signals to R demodulators (DEMODs) 254a through 254r, respectively. Each DEMOD 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each DEMOD 254 may further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R DEMODs 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., decode) the detected symbols and provide decoded data for UE 120 to a data sink 260 and may provide decoded control and system information to a controller / processor 280. The term “controller / processor” may refer to one or more controllers, one or more processors, or a combination of one or more controllers and one or more processors. The channel processor may determine one or more of a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, or a channel quality indicator (CQI) parameter, among other examples. In some aspects, one or more components of the UE 120 may be included in a housing.

[0030]

[0034] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0031]

[0035] An antenna (such as antennas 234a-234t or antennas 252a-252r) may include or be contained within one or more antenna panels, antenna groups, sets of antenna elements, or antenna arrays, among other examples. An antenna panel, antenna group, set of antenna elements, or antenna array may include one or more antenna elements. An antenna panel, antenna group, set of antenna elements, or antenna array may include a set of coplanar antenna elements or a set of non-coplanar antenna elements. An antenna panel, antenna group, set of antenna elements, or antenna array may include antenna elements within a single housing or antenna elements within multiple housings. An antenna panel, antenna group, set of antenna elements, or antenna array may include one or more antenna elements coupled to one or more transmitting or receiving components, such as one or more components of FIG. 2.

[0032]

[0036] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 as well as control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, or CQI). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, if applicable, further processed by MODs 254a-254r (e.g., for Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-s-OFDM) or Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) (CP-OFDM)), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in the modem of the UE 120. In some aspects, the UE 120 includes a transceiver. The transceiver may include any combination of antenna(s) 252, a modulator 254, a demodulator 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, or a TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to implement aspects of any of the methods described herein.

[0033]

[0037] At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the DEMOD 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller / processor 240. The base station 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The base station 110 may include a scheduler 246 to schedule the UE 120 for downlink and uplink communication. In some aspects, a modulator and demodulator (e.g., the MOD / DEMOD 232) of the base station 110 may be included in a modem of the base station 110. In some aspects, the base station 110 includes a transceiver. The transceiver may include any combination of antenna(s) 234, modulator 232, demodulator 232, MIMO detector 236, receive processor 238, transmit processor 220, or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to implement aspects of any of the methods described herein.

[0034]

[0038] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, or any other component(s) of FIG. 2 may implement one or more techniques related to channel-specific maximum allowable exposure reporting, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, or any other component(s) of FIG. 2 may implement or direct the operation of, for example, process 400 of FIG. 4 or other processes described herein. The memories 242 and 282 may store data and program codes for the base station 110 and the UE 120, respectively. In some aspects, the memory 242 or the memory 282 may include a non-transitory computer-readable medium that stores one or more instructions (e.g., code or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of the base station 110 or the UE 120 (e.g., directly or after being compiled, translated, or interpreted), may cause the one or more processors, the UE 120, or the base station 110 to perform or direct operations of, for example, process 400 of FIG. 4 or other processes described herein. In some aspects, executing the instructions may include running the instructions, translating the instructions, compiling the instructions, or interpreting the instructions, among other examples.

[0035]

[0039] In some aspects, the UE 120 includes a means for generating a maximum permissible exposure (MPE) report for a subset of uplink channels included in a set of uplink channels to be used by the UE 120 to transmit an uplink transmission, and a means for transmitting an MPE report associated with the subset of uplink channels to a base station, wherein the MPE report includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated. The means for the UE 120 to perform the operations described herein may include, for example, one or more of the antenna 252, the demodulator 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the modulator 254, the controller / processor 280, or the memory 282.

[0036]

[0040] To limit a user's exposure to radio frequency (RF) radiation, regulatory exposure limits may be imposed on wireless communication devices, such as UEs. For example, to limit a user's exposure to RF radiation, a maximum permissible exposure (MPE) may be imposed on a UE operating in a frequency band above 6 GHz. The MPE may be expressed, for example, as power per unit area (i.e., power density). Generally, a UE is configured with a detector capable of detecting an occurrence of the UE's exposure limit exceeding the MPE (referred to herein as an MPE event). Upon detection of an MPE event, the UE may implement mitigation, such as applying a power reduction (e.g., power management maximum power reduction (P-MPR)) to the UE's uplink transmissions (e.g., in the UE's given serving cell). The UE may also be required to send an MPE report to the BS with which the UE is communicating. The MPE report is intended to provide information to the BS that enables the BS to appropriately schedule the UE for upcoming communication (e.g., with a sufficient amount of resource blocks (RBs) given the applied power reduction) based on the power backoff applied by the UE. Traditionally, MPE reporting is cell-specific and the reported metrics are common to all panels of the UE.

[0037]

[0041] Furthermore, a transmission configuration indicator (TCI) framework implemented in a wireless communication system may utilize separate TCI states to accommodate separate beam indications for uplink and downlink beams. For the downlink TCI state, the source reference signal(s) in M ​​(M≧1) TCIs provide quasi-co-location (QCL) information for at least UE-dedicated reception on a physical downlink shared channel (PDSCH) and for UE-dedicated reception on all or a subset of a control resource set (CORESET) in a component carrier. For the uplink TCI state, the source reference signal(s) in N (N≧1) TCIs provide a reference for determining a common uplink transmit spatial filter(s) for at least a physical uplink shared channel (PUSCH) (e.g., a dynamic grant-based PUSCH or a configured grant-based PUSCH) and for transmission on all or a subset of dedicated physical uplink control channel (PUCCH) resources in a component carrier. Optionally, the uplink transmit spatial filter may also be applied to all sounding reference signal (SRS) resources in the resource set(s) configured for any uplink transmission (e.g., antenna-switched uplink transmission, codebook-based uplink transmission, or non-codebook-based uplink transmission). Furthermore, to facilitate fast uplink panel selection and MPE mitigation, it may be assumed that the UE's uplink transmit panel is the same as or a subset of the UE's downlink receive panel.

[0038]

[0042] Several observations may be made based on the TCI framework described above. One observation is that different types of uplink channels (e.g., dynamic grant-based PUSCH, configured grant-based PUSCH, SRS, and PUCCH) may have different requirements for uplink transmission, which means that robustness against MPE events may vary among uplink channels (depending on the uplink channel type). For example, for a PUCCH or PUSCH uplink channel with a reported median level of MPE value, the BS may choose to schedule a smaller bandwidth for the next PUCCH or PUSCH transmission, which may mitigate the impact of the MPE event. Another observation is that TCI conditions may be indicated for a set or a subset of a UE's uplink channels, which means that an MPE event may occur only for a subset of uplink channels or for uplink channels of a particular type. Another observation is that TCI conditions may be indicated separately for a set or a subset of uplink channels, which means that an MPE report may need to include reporting information related to a particular uplink TCI condition. Another observation is that the set of uplink panels may be a subset of the downlink panels, which means that the MPE report may need to include reporting information related to a specific set of uplink panels. Based on these observations, it is clear that the UE may need to send an MPE report specific to a subset of the UE's uplink channels. However, conventional MPE reporting does not support such specific reporting, which means that MPE reporting in the context of the TCI framework described above does not allow the BS to respond appropriately after an MPE event is detected and reported by the UE.

[0039]

[0043] Various aspects relate generally to channel-specific MPE reporting. Some aspects, more particularly, relate to a UE generating and transmitting an MPE report that includes report information for a subset of the UE's uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated. In some aspects, the identifier may be, for example, an uplink channel type identifier, an uplink panel identifier, an uplink TCI identifier, or a PL-RS identifier. In some aspects, the MPE report information may include values ​​for metrics specific to the subset of uplink channels. Further details are provided below.

[0040]

[0044] Certain aspects of the subject matter described in this disclosure may be implemented to achieve one or more of the following potential advantages: In some examples, the described techniques may be used to enable channel-specific MPE reporting by a UE. In some aspects, the channel-specific reporting capability enables the UE to transmit MPE report information at a channel-specific level, thereby providing the BS with sufficient information to appropriately respond to mitigation actions taken by the UE following detection of an MPE event.

[0041]

[0045] 3A and 3B illustrate an example 300 relating to channel-specific MPE reporting in accordance with various aspects of the present disclosure. As shown in FIG. 3A, the example 300 includes communication between a BS 110 and a UE 120. In some aspects, the BS 110 and the UE 120 may be included in a wireless network, such as the wireless network 100. The BS 110 and the UE 120 may communicate via a wireless access link, which may include an uplink and a downlink.

[0042]

[0046] As shown in FIG. 3A, in a first operation 302, a UE (e.g., UE 120) generates an MPE report for a subset of uplink channels, where the subset of uplink channels includes one or more uplink channels from a set of uplink channels to be used by the UE to transmit uplink transmissions. In some aspects, the UE generates the MPE report based at least in part on an event (e.g., an MPE event) that, upon detection by the UE, triggers the UE to generate an MPE report associated with at least the subset of uplink channels. In some aspects, the MPE report generated by the UE includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel in the subset of uplink channels is associated. In some aspects, the MPE report may include MPE report information for multiple subsets of uplink channels and an identifier corresponding to each of the multiple subsets.

[0043]

[0047] In some aspects, the identifier is an uplink channel type identifier associated with each uplink channel in the subset of uplink channels. That is, in some aspects, the identifier identifies the uplink channel type. The type of uplink channel may be, for example, SRS, PUCCH, dynamic grant-based PUSCH, or configured grant-based PUSCH, among other examples. As a particular example, the MPE report may comprise a power headroom report (PHR) that includes a power management maximum power reduction (P-MPR) value (also referred to as an MPE value). Here, the MPE report may indicate whether the PHR is Type I, Type II, or Type III, where Type I corresponds to PUSCH, Type II corresponds to PUCCH, and Type III corresponds to SRS.

[0044]

[0048] In some aspects, the identifier is an uplink panel identifier associated with each uplink channel in the subset of uplink channels. In some aspects, the uplink panel identifier may be a compact panel identifier (compared to a panel identifier associated with a downlink identifier panel). As a particular example, the UE's downlink panels may be identified as panel A, panel B, panel C, and panel D, and the UE's activated uplink panels may include only panels B and C (i.e., the uplink panels may be a subset of the set of downlink panels). Here, the compact uplink panel identifier may be reported (e.g., in a single bit) using a value of 0 or 1, where 0 refers to panel B and 1 refers to panel C. For example, when the UE's activated uplink panels are a subset of the UE's downlink panels, an MPE report including the uplink panel identifier may be used.

[0045]

[0049] In some implementations, the identifier is an uplink TCI identifier associated with each uplink channel in the subset of uplink channels. For example, a first uplink TCI state may be configured with a first set of PUSCH and PUCCH, and a second uplink TCI state may be configured with a second set of PUSCH and PUCCH. Here, the identifier may correspond to either the first TCI state or the second TCI state. For example, when a common uplink TCI state applies to different sets of uplink channels, an MPE report including the uplink TCI identifier may be used.

[0046]

[0050] In some aspects, the identifier is a PL-RS identifier associated with each uplink channel in the subset of uplink channels. For example, when a PL-RS is reused for multiple different uplink channels, an MPE report including the PL-RS identifier may be used.

[0047]

[0051] The MPE report information may include, for example, a value of a reporting metric, where the value of the reporting metric is specific to a subset of uplink channels. That is, in some aspects, the value of the reporting metric may be dedicated to a subset of uplink channels corresponding to an identifier included in the MPE report. In some aspects, the reporting metric may include, for example, a power headroom (PH), a P-MPR, a maximum transmit power (Pcmax), or a Pcmax that accounts for a P-MPR, among other examples.

[0048]

[0052] In some aspects, when generating an MPE report, the UE determines the value of the reporting metric based at least in part on whether an uplink transmission is scheduled in any uplink channel of the subset of uplink channels. For example, at the time an MPE report is triggered at the UE, the UE may determine whether an uplink transmission is scheduled in any uplink channel of the set of uplink channels. Here, if an uplink transmission is scheduled in an uplink channel of the subset of uplink channels, the UE may determine the value of the reporting metric based at least in part on a set of transmission parameters associated with the uplink channel. Conversely, if an uplink transmission is not scheduled in any uplink channel of the subset of uplink channels, the UE may determine the value of the reporting metric based at least in part on a reference format associated with the set of uplink channels. The reference format may define a set of power control parameters including, for example, a PL-RS, a target power (P0), a closed-loop index, a resource allocation, an uplink beam, or an uplink panel, among other examples. In some aspects, the MPE report may include an indication of whether the value of the reported metric is based at least in part on a set of transmission parameters associated with an uplink channel in the subset of uplink channels or on a reference format associated with the subset of uplink channels.

[0049]

[0053] In some aspects, in a second operation 304, the UE transmits an MPE report associated with the subset of uplink channels to a BS (e.g., BS 110). In some aspects, the BS may receive the MPE report and may utilize the channel-specific MPE report information accordingly (e.g., to respond to mitigation actions taken by the UE after detection of an MPE event). For example, the BS may receive the MPE report and utilize the MPE report information when appropriately scheduling the UE for upcoming uplink communication in the subset of uplink channels (e.g., by scheduling the UE with a sufficient amount of RBs given the power reduction indicated as being applied by the UE).

[0050]

[0054] FIG. 3B is a diagram illustrating an example of a channel-specific MPE report described herein. In the example shown in FIG. 3B, the top row comprises cell index indicators (C1-C7 and a reserved bit R), and three groups of rows below the top row in FIG. 3B each comprise entries in the MPE report associated with one of the illustrated cell index indicators (C6, C4, and C2). As shown, a given entry in the MPE report includes an identifier 306 that identifies a subset of uplink channels associated with the entry (e.g., based on channel type, uplink panel, uplink TCI state, or PL-RS). As further shown, a given entry in the MPE report also includes a reporting metric value 308 (e.g., PH) for the subset of uplink channels. As further shown, a given entry in the MPE report may include one or more other values, such as a Pcmax value 310 for the subset of uplink channels or an MPE value 314 for the subset of uplink channels. In this example, a given entry in the MPE report includes a value 312 (in the "P" field) that indicates whether the value in the "MPEl or R" field is an MPE (i.e., P-MPR) or a reserved bit. As further shown, a given entry in the MPE report includes a value 316 (in the "V" field) that indicates whether the value of one or more reporting metrics included in the entry was determined based on transmission parameters associated with a transmission in one uplink channel of the subset of uplink channels or based on a reference format associated with the subset of uplink channels.

[0051]

[0055] 4 is a flowchart illustrating an example process 400, performed by, for example, a UE, in accordance with various aspects of the present disclosure. The example process 400 is an example in which a UE (e.g., UE 120) performs operations related to channel-specific maximum allowed exposure reporting.

[0052]

[0056] 4, in some aspects, process 400 may include generating an MPE report for a subset of uplink channels included in a set of uplink channels to be used by the UE to transmit an uplink transmission, where the MPE report includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated (block 410). For example, the UE may generate an MPE report for the subset of uplink channels included in the set of uplink channels to be used by the UE to transmit an uplink transmission (such as by using MPE reporting component 510, shown in FIG. 5), as described above, where the MPE report includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated.

[0053]

[0057] 4, in some aspects, process 400 may include transmitting an MPE report associated with the subset of uplink channels to the base station (block 420). For example, the UE may transmit an MPE report associated with the subset of uplink channels to the base station (such as by using transmitting component 506, shown in FIG. 5), as described above.

[0054]

[0058] Process 400 may include additional aspects, such as any single aspect or any combination of aspects, in connection with one or more other processes described below or elsewhere herein.

[0055]

[0059] In a first additional aspect, the identifier is an uplink channel type identifier associated with each uplink channel in the subset of uplink channels.

[0056]

[0060] In a second additional aspect, alone or in combination with the first aspect, the identifier is an uplink panel identifier associated with each uplink channel in the subset of uplink channels.

[0057]

[0061] In a third additional aspect, alone or in combination with one or more of the first and second aspects, the identifier is an uplink TCI identifier associated with each uplink channel in the subset of uplink channels.

[0058]

[0062] In a fourth additional aspect, alone or in combination with one or more of the first to third aspects, the identifier is a PL-RS identifier associated with each uplink channel in the subset of uplink channels.

[0059]

[0063] In a fifth additional aspect, alone or in combination with one or more of the first to fourth aspects, the MPE reporting information includes a value of a reporting metric, the value of the reporting metric being specific to a subset of uplink channels.

[0060]

[0064] In a sixth additional aspect, alone or in combination with one or more of the first to fifth aspects, the reporting metric is PH, P-MPR, Pcmax, or Pcmax taking P-MPR into account.

[0061]

[0065] In a seventh additional aspect, alone or in combination with one or more of the first through sixth aspects, generating the MPE report comprises determining a value of the reporting metric based at least in part on whether the uplink transmission is scheduled in any uplink channel of the subset of uplink channels.

[0062]

[0066] In an eighth additional aspect, alone or in combination with one or more of the first to seventh aspects, the value of the reporting metric is determined based at least in part on a set of transmission parameters associated with an uplink channel when an uplink transmission is scheduled in an uplink channel of the subset of uplink channels.

[0063]

[0067] In a ninth additional aspect, alone or in combination with one or more of the first to eighth aspects, the value of the reporting metric is determined based at least in part on a reference format associated with the set of uplink channels when an uplink transmission is not scheduled in any uplink channel of the subset of uplink channels.

[0064]

[0068] In a tenth additional aspect, alone or in combination with one or more of the first to ninth aspects, the reference format defines a set of power control parameters including at least one of a PL-RS, a P0, a closed-loop index, a resource allocation, an uplink beam, or an uplink panel.

[0065]

[0069] In an eleventh additional aspect, alone or in combination with one or more of the first to tenth aspects, the MPE report includes an indication of whether the value of the reported metric is based at least in part on a set of transmission parameters associated with an uplink channel in the subset of uplink channels or is based at least in part on a reference format associated with the subset of uplink channels.

[0066]

[0070] 5 is a block diagram of an example apparatus 500 for wireless communication in accordance with various aspects of the present disclosure. The apparatus 500 may be a UE, or the UE may include the apparatus 500. In some aspects, the apparatus 500 includes a receiving component 502, a communications manager 504, and a transmitting component 506, which may be in communication with one another (e.g., via one or more buses). As shown, the apparatus 500 may communicate with another apparatus 508 (such as a UE, a base station, or another wireless communication device) using the receiving component 502 and the transmitting component 506.

[0067]

[0071] In some aspects, apparatus 500 may be configured to perform one or more operations described herein with respect to Figures 3A and 3B. Additionally or alternatively, apparatus 500 may be configured to perform one or more processes described herein, such as process 400 of Figure 4. In some aspects, apparatus 500 may include one or more components of the UE described above with respect to Figure 2.

[0068]

[0072] The receiving component 502 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 508. The receiving component 502 may provide the received communications to one or more other components of the device 500, such as the communications manager 504. In some aspects, the receiving component 502 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, among other examples) and provide the processed signals to one or more other components. In some aspects, the receiving component 502 may include one or more antennas, a demodulator, a MIMO detector, a receive processor, a controller / processor, a memory, or a combination thereof, of a UE, as described above with respect to FIG. 2.

[0069]

[0073] The transmitting component 506 may transmit communications such as reference signals, control information, data communications, or combinations thereof to the device 508. In some aspects, the communications manager 504 may generate a communication and transmit the generated communication to the transmitting component 506 for transmission to the device 508. In some aspects, the transmitting component 506 may perform signal processing on the generated communication (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) and transmit the processed signal to the device 508. In some aspects, the transmitting component 506 may include one or more antennas, a modulator, a transmit MIMO processor, a transmit processor, a controller / processor, a memory, or a combination thereof, of a UE as described above with respect to FIG. 2. In some aspects, the transmitting component 506 may be co-located with the receiving component 502 in a transceiver.

[0070]

[0074] The communications manager 504 may generate an MPE report for a subset of uplink channels included in a set of uplink channels to be used by the UE to send an uplink transmission, where the MPE report includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated. The communications manager 504 may transmit the MPE report associated with the subset of uplink channels to a base station or may cause the transmitting component 506 to transmit the MPE report associated with the subset of uplink channels to a base station. In some aspects, the communications manager 504 may perform one or more operations described elsewhere herein as being performed by one or more components of the communications manager 504.

[0071]

[0075] The communications manager 504 may include a controller / processor, memory, or combination thereof, of the UE described above with respect to FIG. 2. In some aspects, the communications manager 504 includes a set of components, such as the MPE reporting component 510. Alternatively, the set of components may be separate and distinct from the communications manager 504. In some aspects, one or more components of the set of components may include or be implemented within a controller / processor, memory, or combination thereof, of the UE described above with respect to FIG. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored on a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

[0072]

[0076] The MPE reporting component 510 may generate an MPE report for a subset of uplink channels included in a set of uplink channels to be used by the UE to transmit an uplink transmission, where the MPE report includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated. The transmitting component 506 may transmit the MPE report associated with the subset of uplink channels to the base station.

[0073]

[0077] The following provides an overview of some aspects of the disclosure.

[0074]

[0078] Aspect 1: A method of wireless communications performed by a user equipment (UE), comprising: generating a maximum permissible exposure (MPE) report for a subset of uplink channels included in a set of uplink channels to be used by the UE to transmit an uplink transmission; and transmitting an MPE report associated with the subset of uplink channels to a base station, wherein the MPE report includes MPE report information for the subset of uplink channels and an identifier with which each uplink channel of the subset of uplink channels is associated.

[0075]

[0079] Aspect 2: The method of aspect 1, wherein the identifier is an uplink channel type identifier associated with each uplink channel in the subset of uplink channels.

[0076]

[0080] Aspect 3: The method of any of aspects 1 to 2, wherein the identifier is an uplink panel identifier associated with each uplink channel in the subset of uplink channels.

[0077]

[0081] Aspect 4: The method of any of aspects 1 to 3, wherein the identifier is an uplink transmission configuration indicator (TCI) identifier associated with each uplink channel in the subset of uplink channels.

[0078]

[0082] Aspect 5: The method of any of aspects 1 to 4, wherein the identifier is a path loss reference signal (PL-RS) identifier associated with each uplink channel in the subset of uplink channels.

[0079]

[0083] Aspect 6: The method of any one of aspects 1 to 5, wherein the MPE reporting information includes a value of a reporting metric, and the value of the reporting metric is specific to a subset of uplink channels.

[0080]

[0084] Aspect 7: The method of aspect 6, wherein the reporting metric is a power headroom (PH), a power management maximum power reduction (P-MPR), a maximum transmit power (Pcmax), or a Pcmax that takes P-MPR into account.

[0081]

[0085] Aspect 8: The method of any of aspects 6 to 7, wherein generating an MPE report comprises determining a value of a reporting metric based at least in part on whether an uplink transmission is scheduled in any uplink channel of a subset of uplink channels.

[0082]

[0086] Aspect 9: The method of any of aspects 6 to 8, wherein the value of the reporting metric is determined based at least in part on a set of transmission parameters associated with the uplink channel when the uplink transmission is scheduled in the uplink channel among the subset of uplink channels.

[0083]

[0087] Aspect 10: The method of any of aspects 6 to 9, wherein the value of the reporting metric is determined based at least in part on a reference format associated with the set of uplink channels when no uplink transmission is scheduled in any uplink channel of the subset of uplink channels.

[0084]

[0088] Aspect 11: The method described in aspect 10, wherein the reference format defines a set of power control parameters including at least one of a path loss reference signal (PL-RS), a target power (P0), a closed-loop index, a resource allocation, an uplink beam, or an uplink panel.

[0085]

[0089] Aspect 12: The method of any of aspects 6 to 11, wherein the MPE report includes an indication of whether the value of the reported metric is based at least in part on a set of transmission parameters associated with an uplink channel in the subset of uplink channels or based at least in part on a reference format associated with the subset of uplink channels.

[0086]

[0090] Aspect 13: An apparatus for wireless communication in a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to perform a method described in one or more aspects of aspects 1 to 12.

[0087]

[0091] Aspect 14: A device for wireless communication, comprising: a memory; and one or more processors coupled to the memory, wherein the memory and the one or more processors are configured to perform a method described in one or more of aspects 1 to 12.

[0088]

[0092] Aspect 15: An apparatus for wireless communication, the apparatus comprising at least one means for performing a method as recited in one or more aspects of aspects 1 to 12.

[0089]

[0093] Aspect 16: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform a method described in one or more aspects of aspects 1 to 12.

[0090]

[0094] Aspect 17: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method described in one or more of Aspects 1 to 12.

[0091]

[0095] The above disclosure provides illustration and description, and is not intended to be exhaustive or to limit the embodiments to the precise form disclosed. Modifications and variations may be made in light of the above disclosure or acquired from practice of the embodiments.

[0092]

[0096] The term "component" as used herein is intended to be broadly interpreted as hardware, firmware, or a combination of hardware and software. A processor, as used herein, is implemented in hardware, firmware, or a combination of hardware and software. It will be apparent that the systems or methods described herein may be implemented in different forms of hardware, firmware, or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems or methods is not intended to be limiting. Thus, the operation and behavior of a system or method is described herein without reference to specific software code, and it will be understood that software and hardware can be designed to implement a system or method based at least in part on the description herein.

[0093]

[0097] As used herein, depending on the context, meeting a threshold may refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, or not equal to the threshold, among other examples.

[0094]

[0098] Although particular combinations of features are recited in the claims or disclosed herein, these combinations do not limit the disclosure of various aspects. Indeed, many of these features may be combined in ways not specifically recited in the claims or disclosed herein. While each dependent claim set forth below may depend directly on only one claim, the disclosure of various aspects includes each dependent claim in combination with every other claim in the claims. As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. As an example, "at least one of a, b, or c" is intended to include a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other order of a, b, and c).

[0095]

[0099] No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used herein, the articles "a" and "an" include one or more items and may be used interchangeably with "one or more." Furthermore, as used herein, the article "the" includes one or more items referenced in connection with the article "the" and may be used interchangeably with "one or more." Furthermore, as used herein, the terms "set" and "group" include one or more items (e.g., related items, unrelated items, or a combination of related and unrelated items) and may be used interchangeably with "one or more." Where only one item is intended, the phrase "only one" or similar language is used. Also, as used herein, the terms "has," "have," "having," and similar terms are intended to be open-ended. Furthermore, the phrase "based on" is intended to mean "based at least in part on," unless expressly specified otherwise. Also, as used herein, the term "or" is inclusive when used consecutively and can be used interchangeably with "and / or" unless otherwise specified (e.g., when used in combination with "either" or "only one of").

Claims

1. 1. A user equipment (UE) for wireless communications, comprising: Memory and one or more processors operably coupled to the memory; wherein the memory and the one or more processors: generating a maximum permissible exposure (MPE) report for a subset of uplink channels included in a set of uplink channels to be used by the UE to transmit an uplink transmission, wherein the MPE report comprises: MPE report information for the subset of uplink channels; an identifier with which each uplink channel of said subset of uplink channels is associated; and Including, transmitting the MPE report associated with the subset of uplink channels to a base station; A user equipment (UE) configured to:

2. The UE of claim 1 , wherein the identifier is an uplink channel type identifier associated with each uplink channel in the subset of uplink channels.

3. The UE of claim 1 , wherein the identifier is an uplink panel identifier associated with each uplink channel in the subset of uplink channels.

4. 2. The UE of claim 1, wherein the identifier is an uplink transmission configuration indicator (TCI) identifier associated with each uplink channel in the subset of uplink channels.

5. 2. The UE of claim 1, wherein the identifier is a path loss reference signal (PL-RS) identifier associated with each uplink channel in the subset of uplink channels.

6. The UE of claim 1 , wherein the MPE reporting information includes a value of a reporting metric, the value of the reporting metric being specific to the subset of uplink channels.

7. The UE of claim 6, wherein the reporting metric is a power headroom (PH), a power management maximum power reduction (P-MPR), a maximum transmit power (Pcmax), or a Pcmax that takes P-MPR into account.

8. 7. The UE of claim 6, wherein the one or more processors are configured, when generating the MPE report, to determine the value of the reporting metric based at least in part on whether an uplink transmission is scheduled in any uplink channel of the subset of uplink channels.

9. 9. The UE of claim 8, wherein the value of the reporting metric is determined based at least in part on a set of transmission parameters associated with an uplink channel of the subset of uplink channels when an uplink transmission is scheduled in the uplink channel.

10. 9. The UE of claim 8, wherein the value of the reporting metric is determined based at least in part on a reference format associated with the set of uplink channels when no uplink transmission is scheduled in any uplink channel of the subset of uplink channels.

11. 11. The UE of claim 10, wherein the reference format defines a set of power control parameters including at least one of a path loss reference signal (PL-RS), a target power (P0), a closed-loop index, a resource allocation, an uplink beam, or an uplink panel.

12. 7. The UE of claim 6, wherein the MPE report includes an indication of whether the value of the reported metric is based at least in part on a set of transmission parameters associated with an uplink channel in the subset of uplink channels or on a reference format associated with the subset of uplink channels.

13. 1. A method of wireless communication implemented by a user equipment (UE), comprising: generating a maximum permissible exposure (MPE) report for a subset of uplink channels included in a set of uplink channels to be used by the UE to transmit an uplink transmission, wherein the MPE report comprises: MPE report information for the subset of uplink channels; an identifier with which each uplink channel of said subset of uplink channels is associated; and Including, transmitting the MPE report associated with the subset of uplink channels to a base station; A method comprising:

14. The method of claim 13 , wherein the identifier is an uplink channel type identifier associated with each uplink channel in the subset of uplink channels.

15. The method of claim 13 , wherein the identifier is an uplink panel identifier associated with each uplink channel in the subset of uplink channels.

16. 14. The method of claim 13, wherein the identifier is an uplink transmission configuration indicator (TCI) identifier associated with each uplink channel in the subset of uplink channels.

17. 14. The method of claim 13, wherein the identifier is a path loss reference signal (PL-RS) identifier associated with each uplink channel in the subset of uplink channels.

18. The method of claim 13 , wherein the MPE reporting information includes a value of a reporting metric, the value of the reporting metric being specific to the subset of uplink channels.

19. 20. The method of claim 18, wherein the reporting metric is power headroom (PH), power management maximum power reduction (P-MPR), maximum transmit power (Pcmax), or Pcmax taking P-MPR into account.

20. 20. The method of claim 18, wherein generating the MPE report comprises determining the value of the reporting metric based at least in part on whether an uplink transmission is scheduled in any uplink channel of the subset of uplink channels.

21. 21. The method of claim 20, wherein the value of the reporting metric is determined based at least in part on a set of transmission parameters associated with an uplink channel of the subset of uplink channels when an uplink transmission is scheduled in the uplink channel.

22. 21. The method of claim 20, wherein the value of the reporting metric is determined based at least in part on a reference format associated with the set of uplink channels when no uplink transmission is scheduled in any uplink channel of the subset of uplink channels.

23. 23. The method of claim 22, wherein the reference format defines a set of power control parameters including at least one of a path loss reference signal (PL-RS), a target power (P0), a closed loop index, a resource allocation, an uplink beam, or an uplink panel.

24. 20. The method of claim 18, wherein the MPE report includes an indication of whether the value of the reporting metric is based at least in part on a set of transmission parameters associated with an uplink channel in the subset of uplink channels or on a reference format associated with the subset of uplink channels.

25. 1. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising: One or more instructions, when executed by one or more processors of a user equipment (UE), cause the UE to: generating a maximum permissible exposure (MPE) report for a subset of uplink channels included in a set of uplink channels to be used by the UE to transmit an uplink transmission, wherein the MPE report comprises: MPE report information for the subset of uplink channels; an identifier with which each uplink channel of said subset of uplink channels is associated; and Including, transmitting the MPE report associated with the subset of uplink channels to a base station; A non-transitory computer-readable medium for causing

26. The identifier is an uplink channel type identifier associated with each uplink channel in said subset of uplink channels; an uplink panel identifier associated with each uplink channel in said subset of uplink channels; an uplink transmission configuration indicator (TCI) identifier associated with each uplink channel in said subset of uplink channels; or a path loss reference signal (PL-RS) identifier associated with each uplink channel in the subset of uplink channels; 26. The non-transitory computer-readable medium of claim 25, comprising at least one of:

27. 26. The non-transitory computer-readable medium of claim 25, wherein the MPE reporting information includes a value of a reporting metric, the value of the reporting metric being specific to the subset of uplink channels.

28. 1. An apparatus for wireless communication, comprising: means for generating a maximum permissible exposure (MPE) report for a subset of uplink channels included in a set of uplink channels to be used by the device to transmit an uplink transmission, wherein the MPE report comprises: MPE report information for the subset of uplink channels; an identifier with which each uplink channel of said subset of uplink channels is associated; and Including, means for transmitting the MPE report associated with the subset of uplink channels to a base station; An apparatus comprising:

29. The identifier is an uplink channel type identifier associated with each uplink channel in said subset of uplink channels; an uplink panel identifier associated with each uplink channel in said subset of uplink channels; an uplink transmission configuration indicator (TCI) identifier associated with each uplink channel in said subset of uplink channels; or a path loss reference signal (PL-RS) identifier associated with each uplink channel in the subset of uplink channels; 29. The apparatus of claim 28, comprising at least one of:

30. 30. The apparatus of claim 28, wherein the MPE reporting information includes a value of a reporting metric, the value of the reporting metric being specific to the subset of uplink channels.

Images