WO2021189293A1

WO2021189293A1 - Techniques for uplink beam management reporting

Info

Publication number: WO2021189293A1
Application number: PCT/CN2020/081094
Authority: WO
Inventors: Fang Yuan; Yan Zhou; Tao Luo
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2020-03-25
Filing date: 2020-03-25
Publication date: 2021-09-30
Anticipated expiration: 2022-09-25

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine whether a beam is subject to a maximum permissible exposure (MPE) condition. The UE may determine, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report. The UE may transmit the uplink beam management report in a channel state information report. Numerous other aspects are provided.

Description

TECHNIQUES FOR UPLINK BEAM MANAGEMENT REPORTING

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for uplink beam management reporting.

DESCRIPTION OF RELATED ART

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

A wireless communication network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs) . A user equipment (UE) may communicate with a base station (BS) via the downlink and uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a Node B, a gNB, an access point (AP) , a radio head, a transmit receive point (TRP) , a New Radio (NR) BS, a 5G Node B, and/or the like.

The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate on a municipal, national, regional, and even global level. New Radio (NR) , which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP) . NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) , using CP-OFDM and/or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink (UL) , as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to increase, there exists a need for further improvements in LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and the telecommunication standards that employ these technologies.

SUMMARY

In some aspects, a method of wireless communication, performed by a UE, may include determining whether a beam is subject to a maximum permissible exposure (MPE) condition; determining, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report; and transmitting the uplink beam management report in a channel state information (CSI) report.

In some aspects, the uplink beam management report is transmitted in the CSI report according to an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.

In some aspects, the uplink beam management report identifies a cell associated with the beam determined to be subject to the MPE condition.

In some aspects, the beam determined to be subject to the MPE condition is associated with a first cell, and the uplink beam management report is transmitted on a second cell.

In some aspects, the uplink beam management report includes information associated with one or more of a layer one (L1) reference signal received power (RSRP) , an L1 signal to interference plus noise ratio (SINR) , a power headroom, or a power management maximum power reduction (P-MPR) .

In some aspects, the uplink beam management report is to be assigned a same priority as a downlink beam management report.

In some aspects, the uplink beam management report is to be assigned a higher priority than a downlink beam management report.

In some aspects, a determination of whether the uplink beam management report is to occupy a CSI processing unit of the UE is based at least in part on a content of the uplink beam management report.

In some aspects, a method of wireless communication, performed by a base station, may include transmitting, to a UE, a CSI reporting configuration; and receiving, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to an MPE condition.

In some aspects, the CSI reporting configuration is an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.

In some aspects, the uplink beam management report includes information associated with one or more of an L1 RSRP, an L1 SINR, a power headroom, or a P-MPR.

In some aspects, the uplink beam management report is to be assigned a same priority by the UE as a downlink beam management report.

In some aspects, the uplink beam management report is to be assigned a higher priority by the UE than a downlink beam management report.

In some aspects, the UE is to determine whether the uplink beam management report is to occupy a CSI processing unit of the UE based at least in part on a content of the uplink beam management report.

In some aspects, a UE for wireless communication may include a memory and one or more processors coupled to the memory. The memory and the one or more processors may be configured to determine whether a beam is subject to an MPE condition; determine, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report; and transmit the uplink beam management report in a CSI report.

In some aspects, a base station for wireless communication may include a memory and one or more processors coupled to the memory. The memory and the one or more processors may be configured to transmit, to a UE, a CSI reporting configuration; and receive, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to an MPE condition.

In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to determine whether a beam is subject to an MPE condition; determine, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report; and transmit the uplink beam management report in a CSI report.

In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to transmit, to a UE, a CSI reporting configuration; and receive, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to an MPE condition.

In some aspects, an apparatus for wireless communication may include means for determining whether a beam is subject to an MPE condition; means for determining, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report; and means for transmitting the uplink beam management report in a CSI report.

In some aspects, an apparatus for wireless communication may include means for transmitting, to a UE, a CSI reporting configuration; and means for receiving, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to an MPE condition.

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

The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The conception and specific 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. Characteristics 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 connection with the accompanying figures. Each of the figures is provided for the purposes of illustration and description, and not as a definition of the limits of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can be understood in detail, a more particular description, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.

Fig. 1 is a diagram illustrating an example of a wireless communication network, in accordance with various aspects of the present disclosure.

Fig. 2 is a diagram illustrating an example of a base station in communication with a UE in a wireless communication network, in accordance with various aspects of the present disclosure.

Fig. 3 is a diagram illustrating an example of communication involving an MPE event, in accordance with various aspects of the present disclosure.

Fig. 4 is a diagram illustrating an example of uplink beam management reporting, in accordance with various aspects of the present disclosure.

Fig. 5 is a diagram illustrating an example process performed, for example, by a UE, in accordance with various aspects of the present disclosure.

Fig. 6 is a diagram illustrating an example process performed, for example, by a base station, in accordance with various aspects of the present disclosure.

Fig. 7 is a conceptual data flow diagram illustrating a data flow between different components in an example apparatus, in accordance with various aspects of the present disclosure.

Fig. 8 is a conceptual data flow diagram illustrating a data flow between different components in an example apparatus, in accordance with various aspects of the present disclosure.

DETAILED DESCRIPTION

Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, 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 one skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover such an apparatus or method which is practiced using other structure, functionality, or structure and functionality in addition to or other than the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of a claim.

Several aspects of telecommunication systems will now be presented with reference to various apparatuses and techniques. These apparatuses and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, and/or the like (collectively referred to as “elements” ) . These elements may be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

It should be noted that while aspects may be described herein using terminology commonly associated with 3G and/or 4G wireless technologies, aspects of the present disclosure can be applied in other generation-based communication systems, such as 5G and later, including NR technologies.

Fig. 1 is a diagram illustrating a wireless network 100 in which aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include a number of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with user equipment (UEs) and may also be referred to as a base station, a NR BS, a Node B, a gNB, a 5G node B (NB) , an access point, a transmit receive point (TRP) , and/or the like. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term “cell” can refer to a coverage area of a BS and/or a BS subsystem serving this coverage area, depending on the context in which the term is used.

A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having association with the femto cell (e.g., UEs in a closed subscriber group (CSG) ) . A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In the example shown in Fig. 1, a BS 110a may be a macro BS for a macro cell 102a, a BS 110b may be a pico BS for a pico cell 102b, and a BS 110c may be a femto BS for a femto cell 102c. A BS may support one or multiple (e.g., three) cells. The terms “eNB” , “base station” , “NR BS” , “gNB” , “TRP” , “AP” , “node B” , “5G NB” , and “cell” may be used interchangeably herein.

In some aspects, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS. In some aspects, the BSs may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, and/or the like using any suitable transport network.

Wireless network 100 may also include relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS) . A relay station may also be a UE that can relay transmissions for other UEs. In the example shown in Fig. 1, a relay station 110d may communicate with macro BS 110a and a UE 120d in order to facilitate communication between BS 110a and UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, and/or the like.

Wireless network 100 may be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, and/or the like. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in wireless network 100. For example, macro BSs may have a high transmit power level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 Watts) .

A network controller 130 may couple to a set of BSs and may provide coordination and control for these BSs. Network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with one another, e.g., directly or indirectly via a wireless or wireline backhaul.

UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, and/or the like. A UE may be a cellular phone (e.g., a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart ring, smart bracelet) ) , an entertainment device (e.g., a music or video device, or a satellite radio) , a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.

Some UEs may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, and/or the like, that may communicate with a base station, another device (e.g., 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 Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband internet of things) devices. Some UEs may be considered a Customer Premises Equipment (CPE) . UE 120 may be included inside a housing that houses components of UE 120, such as processor components, memory components, and/or the like.

In general, any number 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. A RAT may also be referred to as a radio technology, an air interface, and/or the like. A frequency may also be referred to as a carrier, a frequency channel, and/or the like. Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using a base station 110 as an intermediary to communicate with one another) . For example, the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, and/or the like) , a mesh network, and/or the like. In this case, the UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the base station 110.

As indicated above, Fig. 1 is provided as an example. Other examples may differ from what is described with regard to Fig. 1.

Fig. 2 shows a block diagram of a design 200 of base station 110 and UE 120, which may be one of the base stations and one of the UEs in Fig. 1. 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, a transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS (s) selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and/or the like) and control information (e.g., CQI requests, grants, upper layer signaling, and/or the like) and provide overhead symbols and control symbols. Transmit processor 220 may also generate reference symbols for reference signals (e.g., the cell-specific reference signal (CRS) ) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS) ) . A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively. According to various aspects described in more detail below, the synchronization signals can be generated with location encoding to convey additional information.

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

On the uplink, at UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports comprising RSRP, RSSI, RSRQ, CQI, and/or the like) from controller/processor 280. Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, and/or the like) , and transmitted to base station 110. At base station 110, the uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 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 UE 120. Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller/processor 240. Base station 110 may include communication unit 244 and communicate to network controller 130 via communication unit 244. Network controller 130 may include communication unit 294, controller/processor 290, and memory 292.

Controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform one or more techniques associated with uplink beam management reporting, as described in more detail elsewhere herein. For example, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform or direct operations of, for example, process 500 of Fig. 5, process 600 of Fig. 6, and/or other processes as described herein.

Memories

242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and/or memory 282 may comprise a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, the one or more instructions, when executed by one or more processors of the base station 110 and/or the UE 120, may perform or direct operations of, for example, process 500 of Fig. 5, process 600 of Fig. 6, and/or other processes as described herein. A scheduler 246 may schedule UEs for data transmission on the downlink and/or uplink.

In some aspects, UE 120 may include means for determining whether a beam is subject to an MPE condition, means for determining, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report, means for transmitting the uplink beam management report in a CSI report, and/or the like. In some aspects, such means may include one or more components of UE 120 described in connection with Fig. 2, such as controller/processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and/or the like.

In some aspects, base station 110 may include means for transmitting, to a UE, a CSI reporting configuration, means for receiving, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to an MPE condition, and/or the like. In some aspects, such means may include one or more components of base station 110 described in connection with Fig. 2, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller/processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and/or the like.

As indicated above, Fig. 2 is provided as an example. Other examples may differ from what is described with regard to Fig. 2.

Fig. 3 is a diagram illustrating an example 300 of communication involving an MPE event, in accordance with various aspects of the present disclosure. As shown in Fig. 3, a UE and a base station may communicate via one or more beams, and a communication via a beam may take a plurality of different paths to reach a receiver. In some cases, a beam may be a millimeter wave (mmWave) beam that carries a communication in the mmWave frequency band. When transmitting in the mmWave frequency band, a transmitter may use a higher antenna gain as compared to transmitting in the sub-6 gigahertz (GHz) frequency band. As a result, the effective isotropic radiated power (EIRP) , which represents the radiated power in a particular direction (e.g., the direction of the beam) , may be higher for mmWave communications as compared to sub-6 GHz communications. To improve safety, some governing bodies have placed restrictions on the peak EIRP that can be directed toward the human body. These restrictions are sometimes referred to as MPE limitations, MPE constraints, and/or the like.

As shown in Fig. 3, and by reference number 305, the UE may communicate with the base station using an uplink beam and/or a downlink beam. In some cases, the uplink beam used by the UE may not be directed toward a human body, or the like, and therefore may not be subject to an MPE condition.

As shown by reference number 310, the uplink beam used by the UE to transmit an uplink communication may become subject to an MPE condition. For example, the uplink beam may become subject to the MPE condition upon the occurrence of an MPE event. The MPE event may be a human body 315, or the like, blocking the beam (e.g., the beam used by the UE to transmit the uplink transmission may be directed toward the human body 315) . That is, the human body 315 may block or obstruct communications to and/or from an antenna subarray of the UE, or may otherwise be positioned near the antenna subarray. In this case, the downlink beam may be suitable for use by the UE to communicate with the base station, but the uplink beam may not be permitted for use when the uplink beam is subject to the MPE condition.

As shown by reference number 320, in some aspects, the UE may transmit an uplink transmission using a different beam than the uplink beam that is subject to the MPE condition. For example, the UE may use a beam directed toward an object 325 that provides a path to the base station that is not blocked by the human body 315.

Accordingly, the UE may determine (e.g., using ultrasound, using wideband and/or narrowband ranging techniques, and/or the like) that the uplink beam is subject to the MPE condition, and may report an uplink beam failure to the base station. Based at least in part on the reported uplink beam failure, the base station may determine a new beam (e.g., the beam directed toward the object 325) that is to be used by the UE, and may signal an indication of the new beam to the UE. However, it may be beneficial for the base station to determine when the uplink beam subject to the MPE condition becomes usable (e.g., because the uplink beam may have a best path loss) . Accordingly, the base station and the UE may communicate to perform beam management.

When performing beam management, the base station may signal one or more beams that the UE is to use for uplink communication, for downlink communication, and/or the like. Further, the base station and the UE may communicate to maintain the one or more beams, such as to determine a channel quality associated with a beam to determine whether to continue using the beam for uplink communication, for downlink communication, and/or the like. For example, the base station may periodically poll the UE to report one or more uplink beams associated with the best beam parameter (s) (e.g., a signal quality parameter, a signal power parameter, and/or the like) . However, such reporting may result in beam switching latencies.

In some cases, the UE may transmit an uplink beam management report based at least in part on an occurrence of an event (e.g., an event indicated by a configuration provided by the base station) or may autonomously transmit an uplink beam management report. In some cases, the UE may transmit an uplink beam management report (e.g., an event-triggered uplink beam management report) that identifies one or more beams (e.g., best beams) based at least in part on a determination that the one or more beams to be reported are different from one or more beams previously reported. The UE may determine to report a beam based at least in part on whether one or more metrics for the beam satisfy a threshold value (e.g., a threshold value configured by the base station) . In addition, the uplink beam management report may include the one or more metrics for a beam, such as an available power headroom, an estimated uplink RSRP (e.g., a maximum allowable uplink transmit power less a path loss) , and/or the like.

In some cases, the UE may transmit an uplink beam management report that identifies respective failure states (e.g., failure or no failure) for a plurality of beams. The uplink beam management report may include a bitmap to indicate respective failure states for a plurality of beams configured for the UE. The UE may determine a failure state for a beam based at least in part on whether one or more metrics for the beam satisfy a threshold value (e.g., a threshold value configured by the base station) .

An uplink beam management report may identify an uplink beam by an uplink beam indication identifier, such as a spatial relation information identifier, an uplink transmission configuration indicator (TCI) state identifier, a beam indication reference signal identifier (e.g., an uplink or downlink reference signal identifier, an uplink TCI state, and/or the like, included in spatial relation information) , and/or the like. The UE may transmit the uplink beam management report in a physical uplink control channel (PUCCH) or a medium access control (MAC) control element (MAC-CE) , such as in an uplink grant that was provided in response to a scheduling request of the UE, or in an uplink random access channel (RACH) communication.

In some cases, an uplink beam management report may be one of several uplink communications that are to be transmitted by the UE. For example, the UE may also determine that a downlink beam management report that is to be transmitted. However, the UE may not be enabled to prioritize a plurality of uplink communications, such as a plurality of beam management reports, when the UE lacks sufficient processing resources, network resources, and/or the like, to transmit the plurality of uplink communications. Some techniques and apparatuses described herein provide for prioritization of uplink communications, such as beam management reports, transmitted in channel state information (CSI) reports, as well as enable a UE to manage processing resource usage for beam management reports.

As indicated above, Fig. 3 is provided as an example. Other examples may differ from what is described with respect to Fig. 3.

Fig. 4 is a diagram illustrating an example 400 of uplink beam management reporting. As shown in Fig. 4, a UE 120 and a BS 110 may communicate with one another. In some aspects, the UE 120 and the BS 110 may communicate using carrier aggregation. Using carrier aggregation, the BS 110 and the UE 120 may communicate with one another using a primary cell (PCell) and one or more secondary cells (SCells) . In some aspects, the UE 120 may use one or more first uplink beams for communications on the PCell, and one or more second uplink beams for communications on an SCell.

Carrier aggregation may generally enable two or more component carriers (CCs, sometimes referred to as carriers) to be combined (e.g., into a single channel) for a single UE to enhance data capacity. In general, component carriers can be combined in the same or different frequency bands, the same or different frequency ranges, and/or the like. Additionally, or alternatively, contiguous or non-contiguous component carriers can be combined. In some aspects, the BS 110 may configure carrier aggregation for the UE 120 in an intra-band contiguous mode, where the aggregated component carriers are contiguous to one another and are in the same frequency band. Additionally, or alternatively, carrier aggregation may be configured in an intra-band non-contiguous mode, where the aggregated component carriers are in the same frequency band and are non-contiguous to one another. Additionally, or alternatively, carrier aggregation may be configured in an inter-band non-contiguous mode, where the aggregated component carriers are non-contiguous to one another and are in different frequency bands.

As shown by reference number 405, the UE 120 may determine an occurrence of an MPE event associated with a beam used by the UE 120. As described above, the MPE event may be a human body, or the like, blocking the beam. Thus, the UE 120 may be capable of detecting (e.g., using ultrasound, using wideband and/or narrowband ranging techniques, and/or the like) whether an antenna subarray of the UE 120 is near and/or obstructed by a human body, whether a directional beam of the UE 120 is directed toward and/or obstructed by the human body, and/or the like.

The UE 120 may determine that the beam, or one or more component carriers associated with the beam, is subject to an MPE condition based at least in part on determining the occurrence of the MPE event. In some aspects, the UE 120 may be subject to a transmission limitation due to the MPE condition (e.g., a limit on an antenna gain, a limit on a transmit power, and/or the like) . In some aspects, the UE 120 may determine that the beam (or the one or more component carriers) subject to the MPE condition is not to be used (e.g., is not permitted for use) by the UE 120. In some aspects, in an inter-band carrier aggregation scenario, the UE 120 may determine whether the beam (or the one or more component carriers) is to be subject to the MPE condition based at least in part on a total MPE of aggregated component carriers.

In some aspects, the UE 120 may determine to transmit an uplink beam management report based at least in part on the determination that the beam (or the one or more component carriers) is subject to the MPE condition. That is, the uplink beam management report may be triggered by an occurrence of an event (e.g., the MPE event) .

In some aspects, the UE 120 may determine to transmit an uplink beam management report periodically or semi-persistently based at least in part on a configuration (e.g., a CSI reporting configuration) for the uplink beam management report. For example, the UE 120 may transmit the uplink beam management report every one millisecond.

As shown by reference number 410, the UE may transmit, and the BS 110 may receive, a scheduling request. The scheduling request may be a dedicated scheduling request for aperiodic CSI reporting, which the UE 120 may use for an uplink beam management report. In some aspects, the UE 120 may not transmit a scheduling request. For example, the UE 120 may have a configuration for periodic CSI reporting, and/or a configuration for semi-persistent CSI reporting, which the UE 120 may use for an uplink beam management report (e.g., to conserve sounding reference signal resources) .

As shown by reference number 415, the BS 110 may transmit, and the UE 120 may receive, a request for CSI. For example, the BS 110 may transmit the request for CSI in response to the scheduling request of the UE 120. In some aspects, the BS 110 may transmit the request for CSI in downlink control information (DCI) . The request for CSI may be associated with a configuration for aperiodic CSI reporting (e.g., a configuration transmitted by the BS 110) . As described above, the UE 120 also may have a configuration for periodic CSI reporting and/or semi-persistent CSI reporting (e.g., a configuration transmitted by the BS 110) . Accordingly, the UE 120 may use an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, and/or a semi-persistent CSI reporting configuration for the uplink beam management report. In some aspects, a configuration for CSI reporting may associate the uplink beam management report with a cell (e.g., using a cell identifier) .

In some aspects, a CSI reporting configuration may have a higher-layer reporting quantity parameter (e.g., reportQuantity) set to a value that indicates that the CSI reporting configuration is for uplink beam management reporting. In some aspects, the reporting quantity may be an uplink L1 RSRP (e.g., an estimated L1 RSRP) , an uplink L1 SINR, an uplink available power headroom, an uplink P-MPR, and/or the like.

As shown by reference number 420, the UE 120 may transmit, and the BS 110 may receive, the uplink beam management report in a CSI report. For example, the UE 120 may transmit the uplink beam management report in the CSI report according to the aperiodic CSI reporting configuration, the periodic CSI reporting configuration, or the semi-persistent CSI reporting configuration.

The uplink beam management report may identify one or more uplink beams (e.g., best beams) configured for the UE 120. For example, the uplink beam management report may identify one or more beams other than the beam that is subject to the MPE condition.

In some aspects, the uplink beam management report may include information (e.g., measurements) associated with one or more of an uplink L1 RSRP (e.g., an estimated L1 RSRP) , an uplink L1 SINR, an uplink available power headroom, an uplink P-MPR, and/or the like. In some aspects, the information may be related to one or more beams, one or more component carriers, and/or the like.

In some aspects, the uplink beam management report may identify a cell (e.g., using a cell identifier) associated with the beam subject to the MPE condition (or the one or more component carriers subject to the MPE condition) . In some aspects, the beam subject to the MPE condition (or the one or more component carriers subject to the MPE condition) may be associated with a first cell (e.g., one of a PCell, an SCell, or the like) , and the UE 120 may transmit the uplink beam management report in the CSI report on a second cell (e.g., another of the PCell, the SCell, or the like) .

In some aspects, the UE 120 may transmit the uplink beam management report in the CSI report (e.g., perform measurements for the uplink beam management report) based at least in part on a priority associated with the CSI report for the uplink beam management report. For example, if the UE 120 has insufficient resources (e.g., network resources, processing resources, and/or the like) to prepare or transmit the CSI report for the uplink beam management report and another CSI report (e.g., a CSI report for a downlink beam management report, a CSI report for CSI acquisition of a precoder, and/or the like) , the UE may transmit the CSI report associated with a higher priority and drop the CSI report associated with a lower priority.

In some aspects, the UE 120 may determine to assign a same priority to the CSI report for the uplink beam management report as a CSI report for a downlink beam management report. In some aspects, the UE may determine to assign a different priority to the CSI report for the uplink beam management report than a CSI report for a downlink beam management report. For example, the UE may assign a higher priority to the CSI report for the uplink beam management report than a CSI report for a downlink beam management report.

In some aspects, the UE 120 may use Equation 1 to determine a priority value for a CSI report:

Pri _iCSI (y, k, c, s) =2·N _cells·M _s·y+N _cells·M _s·k+M _s·c+s

Equation 1

where Pri _iCSI is a priority value for CSI report i, y is zero for an aperiodic CSI report to be carried on a physical uplink shared channel (PUSCH) , y is one for a semi-persistent CSI report to be carried on a PUSCH, y is two for a semi-persistent CSI report to be carried on a PUCCH, y is three for a periodic CSI report to be carried on a PUCCH, c is a value of a cell index of the serving cell for the UE 120, N _cells is a maximum number of serving cells configured for the UE 120 (e.g., a value of the higher-layer parameter maxNrofServingCells) , s is a value of an identifier for a CSI reporting configuration for CSI report i (e.g., a value of reportConfigID) , M _s is a maximum number of CSI reporting configurations that may be used by the UE 120 (e.g., a value of the higher-layer parameter maxNrofCSI-ReportConfigurations) , and k is a parameter for determining priority value based at least in part on a content of CSI report i (e.g., because the other parameters described above may be the same for different CSI reports) , as described below.

In some aspects, a value of k may be based at least in part on whether a CSI report is for uplink beam management reporting, downlink beam management reporting, or another type of CSI reporting. In this way, a priority value for a CSI report may be based at least in part on whether a CSI report is for uplink beam management reporting, downlink beam management reporting, or another type of CSI reporting. In some aspects, a first CSI report may have a higher priority than a second CSI report when the first CSI report is associated with a lower priority value than the second CSI report.

As described above, in an example, the CSI report for the uplink beam management report is to be associated with a same priority as a CSI report for a downlink beam management report. Accordingly, k may be assigned a first value (e.g., zero) when a CSI report is for uplink beam management reporting (e.g., a reporting quantity associated with the CSI report is for uplink beam management reporting, such as uplink L1 RSRP, uplink L1 SINR, and/or the like) or downlink beam management reporting (e.g., a reporting quantity associated with the CSI report is for downlink L1 RSRP, downlink L1 SINR, and/or the like) . Additionally, k may be assigned a second value (e.g., one) when a CSI report is for another type of CSI reporting (e.g., a reporting quantity associated with the CSI report is not for L1 RSRP, L1 SINR, and/or the like, for example, the CSI report may be for CSI acquisition) .

As described above, in another example, the CSI report for the uplink beam management report is to be associated with a higher priority than a CSI report for a downlink beam management report. Accordingly, k may be assigned a first value (e.g., zero) when a CSI report is for uplink beam management reporting (e.g., a reporting quantity associated with the CSI report is for uplink beam management reporting, such as uplink L1 RSRP, uplink L1 SINR, and/or the like) . Additionally, k may be assigned a second value (e.g., one) when a CSI report is for downlink beam management reporting (e.g., a reporting quantity associated with the CSI report is for downlink L1 RSRP, downlink L1 SINR, and/or the like) . Further, k may be assigned a third value (e.g., two) when a CSI report is for another type of CSI reporting (e.g., a reporting quantity associated with the CSI report is not for L1 RSRP, L1 SINR, and/or the like) .

In some aspects, the UE 120 may indicate, to the BS 110, a number of concurrent CSI calculations (e.g., measurements) of which the UE 120 is capable across all cells configured for the UE 120 (e.g., for uplink beam management reporting, downlink beam management reporting, and/or the like) . Each concurrent CSI calculation may be referred to as a CSI processing unit (CPU) , which may be used by the UE 120 for processing a CSI report. A CPU of the UE 120 may be characterized as being occupied when the CPU is being used for processing a CSI report. Accordingly, the UE 120 may process (e.g., transmit) a number of CSI reports corresponding to a number of available CPUs of the UE 120.

In some aspects, the UE 120 may determine whether processing of the CSI report for the uplink beam management report is to occupy a CPU. In some aspects, the UE 120 may determine whether processing of the CSI report for the uplink beam management report is to occupy a CPU (e.g., for one or more symbols) based at least in part on a content of the CSI report (e.g., based at least in part on a reporting quantity for the CSI report) . Accordingly, in some aspects, processing of the CSI report may not explicitly occupy a CPU based at least in part on a determination that the CSI report is not to occupy a CPU, and in some aspects, processing of the CSI report may explicitly occupy a CPU based at least in part on a determination that the CSI report is to occupy a CPU.

In some aspects, the UE 120 may determine that processing of the CSI report for the uplink beam management report is not to occupy a CPU when a reporting quantity for the CSI report is calculated by the UE 120. For example, the UE 120 may determine that processing of the CSI report is not to occupy a CPU when a reporting quantity for the CSI report is for a power headroom, a P-MPR, and/or the like, which may be delivered by a higher layer than L1. In some aspects, the UE 120 may determine that processing of the CSI report for the uplink beam management report is to occupy a CPU when a reporting quantity for the CSI report is calculated by the UE 120. For example, the UE 120 may determine that processing of the CSI report is to occupy a CPU when a reporting quantity for the CSI report is for uplink L1 RSRP (e.g., estimated L1 RSRP) , uplink L1 SINR, and/or the like.

As indicated above, Fig. 4 is provided as an example. Other examples may differ from what is described with respect to Fig. 4.

Fig. 5 is a diagram illustrating an example process 500 performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 500 is an example where the UE (e.g., UE 120 and/or the like) performs operations associated with uplink beam management reporting.

As shown in Fig. 5, in some aspects, process 500 may include determining whether a beam is subject to an MPE condition (block 510) . For example, the UE (e.g., using controller/processor 280, and/or the like) may determine whether a beam is subject to an MPE condition, as described above.

As further shown in Fig. 5, in some aspects, process 500 may include determining, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report (block 520) . For example, the UE (e.g., using controller/processor 280, and/or the like) may determine, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report, as described above.

As further shown in Fig. 5, in some aspects, process 500 may include transmitting the uplink beam management report in a CSI report (block 530) . For example, the UE (e.g., using controller/processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, and/or the like) may transmit the uplink beam management report in a CSI report, as described above.

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

In a first aspect, the uplink beam management report is transmitted in the CSI report according to an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.

In a second aspect, alone or in combination with the first aspect, the uplink beam management report identifies a cell associated with the beam determined to be subject to the MPE condition.

In a third aspect, alone or in combination with one or more of the first and second aspects, the beam determined to be subject to the MPE condition is associated with a first cell, and the uplink beam management report is transmitted on a second cell.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, the uplink beam management report includes information associated with one or more of an L1 RSRP, an L1 SINR, a power headroom, or a P-MPR.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the uplink beam management report is to be assigned a same priority as a downlink beam management report.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the uplink beam management report is to be assigned a higher priority than a downlink beam management report.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, a determination of whether the uplink beam management report is to occupy a CSI processing unit of the UE is based at least in part on a content of the uplink beam management report.

Although Fig. 5 shows example blocks of process 500, in some aspects, process 500 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 5. Additionally, or alternatively, two or more of the blocks of process 500 may be performed in parallel.

Fig. 6 is a diagram illustrating an example process 600 performed, for example, by a base station, in accordance with various aspects of the present disclosure. Example process 600 is an example where the base station (e.g., base station 110, and/or the like) performs operations associated with uplink beam management reporting.

As shown in Fig. 6, in some aspects, process 600 may include transmitting, to a UE, a CSI reporting configuration (block 610) . For example, the base station (e.g., using controller/processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and/or the like) may transmit, to a UE, a CSI reporting configuration, as described above.

As further shown in Fig. 6, in some aspects, process 600 may include receiving, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to an MPE condition (block 620) . For example, the base station (e.g., using antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller/processor 240, and/or the like) may receive, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to an MPE condition, as described above.

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

In a first aspect, the CSI reporting configuration is an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the uplink beam management report is to be assigned a same priority by the UE as a downlink beam management report.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the uplink beam management report is to be assigned a higher priority by the UE than a downlink beam management report.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the UE is to determine whether the uplink beam management report is to occupy a CSI processing unit of the UE based at least in part on a content of the uplink beam management report.

Although Fig. 6 shows example blocks of process 600, in some aspects, process 600 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 6. Additionally, or alternatively, two or more of the blocks of process 600 may be performed in parallel.

Fig. 7 is a conceptual data flow diagram 700 illustrating a data flow between different components in an example apparatus 702. The apparatus 702 may be a UE (e.g., UE 120) . In some aspects, the apparatus 702 includes a reception component 704, a determination component 706, and/or a transmission component 708.

In some aspects, reception component 704 may receive, from an apparatus 750 (e.g., BS 110) , a CSI reporting configuration (e.g., an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, a semi-persistent CSI reporting configuration, and/or the like) . In some aspects, determination component 706 may determine whether a beam is subject to an MPE condition. Additionally, or alternatively, determination component 706 may determine, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report. Additionally, or alternatively, determination component 706 may determine a priority that is to be assigned to the uplink beam management report. Additionally, or alternatively, determination component 706 may determine whether the uplink beam management report is to occupy a CSI processing unit of the apparatus 750 (e.g., based at least in part on a content of the uplink beam management report) . In some aspects, transmission component 708 may transmit the uplink beam management report in a CSI report (e.g., according to the CSI reporting configuration) .

The apparatus 702 may include additional components that perform each of the blocks of the algorithm in the aforementioned process 500 of Fig. 5, process 600 of Fig. 6, and/or the like. Each block in the aforementioned process 500 of Fig. 5, process 600 of Fig. 6, and/or the like may be performed by a component and the apparatus may include one or more of those components. The components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof.

The number and arrangement of components shown in Fig. 7 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 7. Furthermore, two or more components shown in Fig. 7 may be implemented within a single component, or a single component shown in Fig. 7 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of components (e.g., one or more components) shown in Fig. 7 may perform one or more functions described as being performed by another set of components shown in Fig. 7.

Fig. 8 is a conceptual data flow diagram 800 illustrating a data flow between different components in an example apparatus 802. The apparatus 802 may be a base station (e.g., base station 110) . In some aspects, the apparatus 802 includes a reception component 804 and/or a transmission component 806.

In some aspects, transmission component 806 may transmit (e.g., in DCI) , to an apparatus 850 (e.g., UE 120) , a CSI reporting configuration (e.g., an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, a semi-persistent CSI reporting configuration, and/or the like) . For example, transmission component 806 may transmit the CSI reporting configuration in response to a scheduling request transmitted by the apparatus 850. In some aspects, reception component 804 may receive, from the apparatus 850, an uplink beam management report in a CSI report (e.g., according to the CSI reporting configuration) . For example, reception component 804 may receive the uplink beam management report when a beam of the apparatus 850 is determined to be subject to an MPE condition.

The apparatus 802 may include additional components that perform each of the blocks of the algorithm in the aforementioned process 500 of Fig. 5, process 600 of Fig. 6, and/or the like. Each block in the aforementioned process 500 of Fig. 5, process 600 of Fig. 6, and/or the like may be performed by a component and the apparatus may include one or more of those components. The components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof.

The number and arrangement of components shown in Fig. 8 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 8. Furthermore, two or more components shown in Fig. 8 may be implemented within a single component, or a single component shown in Fig. 8 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of components (e.g., one or more components) shown in Fig. 8 may perform one or more functions described as being performed by another set of components shown in Fig. 8.

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

As used herein, the term “component” is intended to be broadly construed as hardware, firmware, and/or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and/or a combination of hardware and software.

As used herein, satisfying a threshold may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, and/or the like.

It will be apparent that systems and/or methods described herein may be implemented in different forms of hardware, firmware, and/or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and/or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and/or methods were described herein without reference to specific software code-it being understood that software and hardware can be designed to implement the systems and/or methods based, at least in part, on the description herein.

Even though particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of various aspects includes each dependent claim in combination with every other claim in the claim set. 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 cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .

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” are intended to include one or more items, and may be used interchangeably with “one or more. ” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, a combination of related and unrelated items, and/or the like) , 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/or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.

Claims

A method of wireless communication performed by a user equipment (UE) , comprising:

determining whether a beam is subject to a maximum permissible exposure (MPE) condition;

determining, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report; and

transmitting the uplink beam management report in a channel state information (CSI) report.
The method of claim 1, wherein the uplink beam management report is transmitted in the CSI report according to an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.
The method of claim 1, wherein the uplink beam management report identifies a cell associated with the beam determined to be subject to the MPE condition.
The method of claim 1, wherein the beam determined to be subject to the MPE condition is associated with a first cell, and the uplink beam management report is transmitted on a second cell.
The method of claim 1, wherein the uplink beam management report includes information associated with one or more of a layer one reference signal received power, a layer one signal to interference plus noise ratio, a power headroom, or a power management maximum power reduction.
The method of claim 1, wherein the uplink beam management report is to be assigned a same priority as a downlink beam management report.
The method of claim 1, wherein the uplink beam management report is to be assigned a higher priority than a downlink beam management report.
The method of claim 1, wherein a determination of whether the uplink beam management report is to occupy a CSI processing unit of the UE is based at least in part on a content of the uplink beam management report.
A method of wireless communication performed by a base station, comprising:

transmitting, to a user equipment (UE) , a channel state information (CSI) reporting configuration; and

receiving, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to a maximum permissible exposure (MPE) condition.
The method of claim 9, wherein the CSI reporting configuration is an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.
The method of claim 9, wherein the uplink beam management report identifies a cell associated with the beam determined to be subject to the MPE condition.
The method of claim 9, wherein the beam determined to be subject to the MPE condition is associated with a first cell, and the uplink beam management report is transmitted on a second cell.
The method of claim 9, wherein the uplink beam management report includes information associated with one or more of a layer one reference signal received power, a layer one signal to interference plus noise ratio, a power headroom, or a power management maximum power reduction.
The method of claim 9, wherein the uplink beam management report is to be assigned a same priority by the UE as a downlink beam management report.
The method of claim 9, wherein the uplink beam management report is to be assigned a higher priority by the UE than a downlink beam management report.
The method of claim 9, wherein the UE is to determine whether the uplink beam management report is to occupy a CSI processing unit of the UE based at least in part on a content of the uplink beam management report.
A user equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors coupled to the memory, the memory and the one or more processors configured to:

determine whether a beam is subject to a maximum permissible exposure (MPE) condition;

determine, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report; and

transmit the uplink beam management report in a channel state information (CSI) report.
The UE of claim 17, wherein the uplink beam management report is transmitted in the CSI report according to an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.
The UE of claim 17, wherein the uplink beam management report identifies a cell associated with the beam determined to be subject to the MPE condition.
The UE of claim 17, wherein the beam determined to be subject to the MPE condition is associated with a first cell, and the uplink beam management report is transmitted on a second cell.
The UE of claim 17, wherein the uplink beam management report includes information associated with one or more of a layer one reference signal received power, a layer one signal to interference plus noise ratio, a power headroom, or a power management maximum power reduction.
The UE of claim 17, wherein the uplink beam management report is to be assigned a same priority as a downlink beam management report.
The UE of claim 17, wherein the uplink beam management report is to be assigned a higher priority than a downlink beam management report.
The UE of claim 17, wherein a determination of whether the uplink beam management report is to occupy a CSI processing unit of the UE is based at least in part on a content of the uplink beam management report.
A base station for wireless communication, comprising:

a memory; and

one or more processors coupled to the memory, the memory and the one or more processors configured to:

transmit, to a user equipment (UE) , a channel state information (CSI) reporting configuration; and

receive, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to a maximum permissible exposure (MPE) condition.
The base station of claim 25, wherein the CSI reporting configuration is an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.
The base station of claim 25, wherein the uplink beam management report identifies a cell associated with the beam determined to be subject to the MPE condition.
The base station of claim 25, wherein the beam determined to be subject to the MPE condition is associated with a first cell, and the uplink beam management report is transmitted on a second cell.
The base station of claim 25, wherein the uplink beam management report includes information associated with one or more of a layer one reference signal received power, a layer one signal to interference plus noise ratio, a power headroom, or a power management maximum power reduction.
The base station of claim 25, wherein the uplink beam management report is to be assigned a same priority by the UE as a downlink beam management report.
The base station of claim 25, wherein the uplink beam management report is to be assigned a higher priority by the UE than a downlink beam management report.
The base station of claim 25, wherein the UE is to determine whether the uplink beam management report is to occupy a CSI processing unit of the UE based at least in part on a content of the uplink beam management report.
A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising:

one or more instructions that, when executed by one or more processors of a user equipment, cause the one or more processors to:

determine whether a beam is subject to a maximum permissible exposure (MPE) condition;

determine, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report; and

transmit the uplink beam management report in a channel state information (CSI) report.
The non-transitory computer-readable medium of claim 33, wherein the uplink beam management report is transmitted in the CSI report according to an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.
The non-transitory computer-readable medium of claim 33, wherein the uplink beam management report identifies a cell associated with the beam determined to be subject to the MPE condition.
The non-transitory computer-readable medium of claim 33, wherein the beam determined to be subject to the MPE condition is associated with a first cell, and the uplink beam management report is transmitted on a second cell.
The non-transitory computer-readable medium of claim 33, wherein the uplink beam management report includes information associated with one or more of a layer one reference signal received power, a layer one signal to interference plus noise ratio, a power headroom, or a power management maximum power reduction.
The non-transitory computer-readable medium of claim 33, wherein the uplink beam management report is to be assigned a same priority as a downlink beam management report.
The non-transitory computer-readable medium of claim 33, wherein the uplink beam management report is to be assigned a higher priority than a downlink beam management report.
The non-transitory computer-readable medium of claim 33, wherein a determination of whether the uplink beam management report is to occupy a CSI processing unit of the UE is based at least in part on a content of the uplink beam management report.
A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising:

one or more instructions that, when executed by one or more processors of a base station, cause the one or more processors to:

transmit, to a user equipment (UE) , a channel state information (CSI) reporting configuration; and

receive, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to a maximum permissible exposure (MPE) condition.
The non-transitory computer-readable medium of claim 41, wherein the CSI reporting configuration is an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.
The non-transitory computer-readable medium of claim 41, wherein the uplink beam management report identifies a cell associated with the beam determined to be subject to the MPE condition.
The non-transitory computer-readable medium of claim 41, wherein the beam determined to be subject to the MPE condition is associated with a first cell, and the uplink beam management report is transmitted on a second cell.
The non-transitory computer-readable medium of claim 41, wherein the uplink beam management report includes information associated with one or more of a layer one reference signal received power, a layer one signal to interference plus noise ratio, a power headroom, or a power management maximum power reduction.
The non-transitory computer-readable medium of claim 41, wherein the uplink beam management report is to be assigned a same priority by the UE as a downlink beam management report.
The non-transitory computer-readable medium of claim 41, wherein the uplink beam management report is to be assigned a higher priority by the UE than a downlink beam management report.
The non-transitory computer-readable medium of claim 41, wherein the UE is to determine whether the uplink beam management report is to occupy a CSI processing unit of the UE based at least in part on a content of the uplink beam management report.
An apparatus for wireless communication, comprising:

means for determining whether a beam is subject to a maximum permissible exposure (MPE) condition;

means for determining, based at least in part on a determination that the beam is subject to the MPE condition, to transmit an uplink beam management report; and

means for transmitting the uplink beam management report in a channel state information (CSI) report.
The apparatus of claim 49, wherein the uplink beam management report is transmitted in the CSI report according to an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.
The apparatus of claim 49, wherein the uplink beam management report identifies a cell associated with the beam determined to be subject to the MPE condition.
The apparatus of claim 49, wherein the beam determined to be subject to the MPE condition is associated with a first cell, and the uplink beam management report is transmitted on a second cell.
The apparatus of claim 49, wherein the uplink beam management report includes information associated with one or more of a layer one reference signal received power, a layer one signal to interference plus noise ratio, a power headroom, or a power management maximum power reduction.
The apparatus of claim 49, wherein the uplink beam management report is to be assigned a same priority as a downlink beam management report.
The apparatus of claim 49, wherein the uplink beam management report is to be assigned a higher priority than a downlink beam management report.
The apparatus of claim 49, wherein a determination of whether the uplink beam management report is to occupy a CSI processing unit of the UE is based at least in part on a content of the uplink beam management report.
An apparatus for wireless communication, comprising:

means for transmitting, to a user equipment (UE) , a channel state information (CSI) reporting configuration; and

means for receiving, from the UE and according to the CSI reporting configuration, an uplink beam management report in a CSI report when a beam of the UE is determined to be subject to a maximum permissible exposure (MPE) condition.
The apparatus of claim 57, wherein the CSI reporting configuration is an aperiodic CSI reporting configuration, a periodic CSI reporting configuration, or a semi-persistent CSI reporting configuration.
The apparatus of claim 57, wherein the uplink beam management report identifies a cell associated with the beam determined to be subject to the MPE condition.
The apparatus of claim 57, wherein the beam determined to be subject to the MPE condition is associated with a first cell, and the uplink beam management report is transmitted on a second cell.
The apparatus of claim 57, wherein the uplink beam management report includes information associated with one or more of a layer one reference signal received power, a layer one signal to interference plus noise ratio, a power headroom, or a power management maximum power reduction.
The apparatus of claim 57, wherein the uplink beam management report is to be assigned a same priority by the UE as a downlink beam management report.
The apparatus of claim 57, wherein the uplink beam management report is to be assigned a higher priority by the UE than a downlink beam management report.
The apparatus of claim 57, wherein the UE is to determine whether the uplink beam management report is to occupy a CSI processing unit of the UE based at least in part on a content of the uplink beam management report.