US-12621776-B2 - Techniques for determining beam metrics for maximum permissible exposure reporting

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine one or more beam metric values for one or more beams that are monitored by the UE, wherein the one or more beam metric values correspond to one or more of a beam power management maximum power reduction (P-MPR) metric, a beam uplink reference signal receive power (RSRP) metric, or a beam virtual power headroom metric; and transmit a report based at least in part on the one or more beam metric values. Numerous other aspects are provided.

Inventors

• Fang Yuan
• Yan Zhou
• Tao Luo

Assignees

• QUALCOMM INCORPORATED

Dates

Publication Date

20260505

Application Date

20200211

Claims (20)

1. 1 . A method of wireless communication performed by a user equipment (UE), comprising: determining, based at least in part on an uplink resource, or an uplink resource configuration, associated with one or more beams, one or more beam metric values for the one or more beams that are monitored by the UE, wherein the one or more beam metric values are beam specific for each beam of the one or more beams and correspond to one or more of a beam power management maximum power reduction (P-MPR) metric, a beam uplink reference signal receive power (RSRP) metric, or a beam virtual power headroom metric; and transmitting a report based at least in part on the one or more beam metric values, wherein the report comprises an indication of the uplink resource associated with the each beam of the one or more beams, and at least one beam metric value, of the one or more beam metric values, for the uplink resource associated with the each beam of the one or more beams.
2. 2 . The method of claim 1 , wherein the one or more beam metric values correspond to the beam uplink RSRP metric, and wherein the beam uplink RSRP metric is based at least in part on a beam P-MPR metric.
3. 3 . The method of claim 1 , wherein the one or more beam metric values correspond to the beam virtual power headroom metric, and wherein the beam virtual power headroom metric is based at least in part on a beam P-MPR metric.
4. 4 . The method of claim 3 , further comprising: calculating a value for the beam virtual power headroom metric for a beam, of the one or more beams, based at least in part on the uplink resource, or the uplink resource configuration, associated with the beam.
5. 5 . The method of claim 1 , wherein the beam virtual power headroom metric for a beam is based at least in part on a difference between a maximum power available for a transmission via an uplink resource, or an uplink resource configuration, associated with the beam and a current transmission power setting for a transmission via the uplink resource associated with the beam.
6. 6 . The method of claim 5 , wherein the maximum power available for the transmission via the uplink resource is based at least in part on a beam P-MPR metric for the beam.
7. 7 . The method of claim 5 , wherein the current transmission power setting for the transmission via the uplink resource associated with the beam is based at least in part on a set of power control parameters comprising one or more of: pathloss, P0, alpha, or a reference target power.
8. 8 . The method of claim 5 , wherein the uplink resource comprises a physical uplink control channel, a physical uplink shared channel, or a sounding reference signal.
9. 9 . The method of claim 5 , wherein the uplink resource configuration comprises one or more of: information relating to a pathloss reference signal, information relating to a power control loop, p0, alpha, or information relating to the beam.
10. 10 . The method of claim 1 , wherein the UE transmits the report in one or more of: a medium access control control element message, or an uplink beam report.
11. 11 . The method of claim 1 , wherein the report comprises at least one beam identification associated with the one or more beam metric values.
12. 12 . The method of claim 11 , wherein a beam identification of the at least one beam identification comprises: an uplink beam identification, a spatial reference signal identification, or an uplink resource identifier.
13. 13 . The method of claim 12 , wherein the uplink resource identifier comprises one or more of a physical uplink control channel (PUCCH) identifier, a sounding reference signal (SRS) identifier, or a SRS resource set identifier.
14. 14 . The method of claim 1 , wherein the report comprises one or more of: an indication of one or more metric types, associated with the at least one beam metric value for the uplink resource associated with the current beam, that are included in the report.
15. 15 . The method of claim 14 , wherein the at least one beam metric value for the uplink resource associated with the current beam comprises a value for the beam virtual power headroom metric.
16. 16 . The method of claim 1 , wherein the report comprises: an indication of an uplink resource associated with a candidate beam of the one or more beams, and at least one beam metric value, of the one or more beam metric values, for the uplink resource associated with the candidate beam.
17. 17 . The method of claim 16 , wherein the report comprises: an indication of metric types, associated with the at least one beam metric value for the uplink resource associated with the candidate beam, that are included in the report.
18. 18 . The method of claim 16 , wherein the at least one beam metric value for the uplink resource associated with the candidate beam comprises a value for the beam virtual power headroom metric.
19. 19 . The method of claim 16 , wherein the report comprises: an indication of an uplink resource associated with an additional current beam of the one or more beams, and at least one beam metric value, of the one or more beam metric values, for the uplink resource associated with the additional current beam.
20. 20 . The method of claim 1 , wherein the report comprises: an indication of an uplink resource associated with an additional candidate beam of the one or more beams, and at least one beam metric value, of the one or more beam metric values, for the uplink resource associated with the additional candidate beam.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application is a 371 national stage of Patent Cooperation Treaty (PCT) Application No. PCT/CN2020/074690 filed on Feb. 11, 2020, entitled “TECHNIQUES FOR DETERMINING BEAM METRICS FOR MAXIMUM PERMISSIBLE EXPOSURE REPORTING,” which is hereby expressly incorporated by reference herein. FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for techniques for determining beam metrics for maximum permissible exposure 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 one or more beam metric values for one or more beams that are monitored by the UE, wherein the one or more beam metric values correspond to one or more of a beam power management maximum power reduction (P-MPR) metric, a beam uplink reference signal receive power (RSRP) metric, or a beam virtual power headroom metric, and transmitting a report based at least in part on the one or more beam metric values. In some aspects, the one or more beam metric values correspond to the uplink RSRP metric and the uplink RSRP metric is based at least in part on a beam P-MPR metric. In some aspects, the one or more beam metric values correspond to the beam virtual power headroom metric, and the beam virtual power headroom metric is based at least in part on a beam P-MPR metric. In some aspects, the method includes calculating a value for the beam virtual power headroom metric for a beam, of the one or more beams, based at least in part on an uplink resource, or an uplink resource configuration, associated with the beam. In some aspects, the beam virtual power headroom metric for a beam is based at least in part on a difference between a maximum power available for a transmission via an uplink resource, or an uplink resource configuration, associated with the beam, and a current transmission power setting for a transmission via the uplink resource associated with the beam. In some aspects, the maximum power available