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US-12627327-B2 - Differential report for maximum permissible exposure values

US12627327B2US 12627327 B2US12627327 B2US 12627327B2US-12627327-B2

Abstract

Methods, systems, and devices for wireless communications are described. In some examples, a user equipment (UE) may receive control signaling that includes an indication that the UE is configured to report multiple values associated with maximum permissible exposure. Each of the multiple values may be of a same type but associated with different transmission aspects of the UE, the different transmission aspects including at least different transmission beams or different antenna panels. The UE may transmit a first maximum permissible exposure value associated with a first transmission aspect of the UE. The UE may transmit a second maximum permissible exposure value associated with a second transmission aspect of the UE and transmitted as a differential value based at least in part on the first maximum permissible exposure value.

Inventors

  • Fang Yuan
  • Yan Zhou
  • Tao Luo

Assignees

  • QUALCOMM INCORPORATED

Dates

Publication Date
20260512
Application Date
20210602

Claims (20)

  1. 1 . A method for wireless communications at a user equipment (UE), comprising: receiving control signaling that includes an indication that the UE is configured to report multiple values associated with maximum permissible exposure at the UE, each of the multiple values being of a same type but associated with different transmission aspects of the UE, the different transmission aspects including at least different antenna panels of the UE; transmitting a first maximum permissible exposure value of the multiple values, the first maximum permissible exposure value associated with a first transmission aspect of the UE; and transmitting a second maximum permissible exposure value of the multiple values, the second maximum permissible exposure value associated with a second transmission aspect of the UE and transmitted as a differential value based at least in part on the first maximum permissible exposure value.
  2. 2 . The method of claim 1 , further comprising: transmitting the first maximum permissible exposure value, the second maximum permissible exposure value, and additional maximum permissible exposure values of the multiple values in a report, the additional maximum permissible exposure values each associated with a corresponding additional transmission aspect of the UE and each transmitted as an additional differential value based at least in part on an immediately preceding differential value within the report.
  3. 3 . The method of claim 1 , further comprising: transmitting the first maximum permissible exposure value, the second maximum permissible exposure value, and additional maximum permissible exposure values of the multiple values in a report, the additional maximum permissible exposure values each associated with a corresponding additional transmission aspect of the UE and each transmitted as an additional differential value based at least in part on the first maximum permissible exposure value.
  4. 4 . The method of claim 3 , further comprising: determining the additional differential values with respect to a non-quantized version or a quantized version of the first maximum permissible exposure value.
  5. 5 . The method of claim 1 , further comprising: determining, from the control signaling, a differential maximum permissible exposure reporting scheme that is to be used by the UE for transmitting the multiple values using respective differential values.
  6. 6 . The method of claim 1 , further comprising: determining, from the control signaling, that the multiple values are to be reported per transmission beam of a given antenna panel of the UE, per antenna panel for a given transmission beam of the UE, or a combination thereof.
  7. 7 . The method of claim 1 , wherein the first transmission aspect is a first antenna panel of the UE and the second transmission aspect is a second antenna panel of the UE.
  8. 8 . The method of claim 1 , wherein the first transmission aspect is a first transmission beam of the UE and the second transmission aspect is a second transmission beam of the UE.
  9. 9 . The method of claim 1 , wherein the second maximum permissible exposure value comprises fewer bits than the first maximum permissible exposure value.
  10. 10 . The method of claim 1 , further comprising: transmitting the first maximum permissible exposure value and the second maximum permissible exposure value as respective power headroom report values.
  11. 11 . The method of claim 10 , wherein the respective power headroom report values are each associated with an activated uplink transmission configuration indicator (TCI) state or a joint TCI state.
  12. 12 . The method of claim 10 , wherein the respective power headroom report values are each associated with at least one of a reported synchronization signal/physical broadcast channel block resource indicator (SSBRI), a channel state information reference signal resource indicator (CRI), or a panel indication.
  13. 13 . The method of claim 1 , further comprising: transmitting the first maximum permissible exposure value and the second maximum permissible exposure value as respective reference signal received power report values or respective signal to interference and noise ratio report values.
  14. 14 . The method of claim 13 , wherein each of the respective reference signal received power report values or respective signal to interference and noise ratio report values is associated with at least one of a reported synchronization signal/physical broadcast channel block resource indicator (SSBRI), a channel state information reference signal resource indicator (CRI), or a panel indication.
  15. 15 . A method for wireless communications at a base station, comprising: transmitting control signaling that includes an indication that a user equipment (UE) is configured to report multiple values associated with maximum permissible exposure at the UE, each of the multiple values being of a same type but associated with different transmission aspects of the UE, the different transmission aspects including at least different antenna panels of the UE; receiving a first maximum permissible exposure value of the multiple values, the first maximum permissible exposure value associated with a first transmission aspect of the UE; and receiving a second maximum permissible exposure value of the multiple values, the second maximum permissible exposure value associated with a second transmission aspect of the UE and transmitted as a differential value based at least in part on the first maximum permissible exposure value.
  16. 16 . The method of claim 15 , further comprising: receiving the first maximum permissible exposure value, the second maximum permissible exposure value, and additional maximum permissible exposure values of the multiple values in a report, the additional maximum permissible exposure values each associated with a corresponding additional transmission aspect of the UE and each received as an additional differential value based at least in part on an immediately preceding differential value within the report.
  17. 17 . The method of claim 15 , further comprising: receiving the first maximum permissible exposure value, the second maximum permissible exposure value, and additional maximum permissible exposure values of the multiple values in a report, the additional maximum permissible exposure values each associated with a corresponding additional transmission aspect of the UE and each received as an additional differential value based at least in part on the first maximum permissible exposure value.
  18. 18 . The method of claim 17 , further comprising: determining the additional differential values with respect to a non-quantized version or a quantized version of the first maximum permissible exposure value.
  19. 19 . The method of claim 15 , further comprising: determining a differential maximum permissible exposure reporting scheme that is to be used by the UE for transmitting the multiple values using respective differential values.
  20. 20 . The method of claim 15 , further comprising: determining that the multiple values are to be reported per transmission beam of a given antenna panel of the UE, per antenna panel for a given transmission beam of the UE, or a combination thereof.

Description

CROSS REFERENCE The present Application is a 371 national stage filing of International PCT Application No. PCT/CN2021/097838 by YUAN et al. entitled “DIFFERENTIAL REPORT FOR MAXIMUM PERMISSIBLE EXPOSURE VALUES,” filed Jun. 2, 2021, which is assigned to the assignee hereof, and which is expressly incorporated by reference in its entirety herein. FIELD OF TECHNOLOGY The following relates to wireless communications, including differential reporting of maximum permissible exposure values. BACKGROUND Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems. These systems may employ technologies such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communications system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE). In some wireless communications system, a wireless device may perform measurements related to radio frequency maximum permissible exposure. The wireless device may implement measurement and reporting of radio frequency maximum permissible exposure values. Conventional methods for such radio frequency maximum permissible exposure value reporting schemes may be improved. SUMMARY The described techniques relate to improved methods, systems, devices, and apparatuses that may support differential reporting of maximum permissible exposure values. Generally, the described techniques provide for methods for differential radio frequency maximum permissible exposure value reporting. A user equipment (UE) may receive control signaling that may include an indication that the UE may report multiple values associated with radio frequency maximum permissible exposure at the UE. The multiple values may be associated with different transmission aspects of the UE, and the different transmission aspects may include different combinations of transmission beams of the UE and antenna panels of the UE. The UE may transmit a first radio frequency maximum permissible exposure value of the multiple values, and the first radio frequency maximum permissible exposure value may be associated with a first transmission aspect of the UE. The UE may transmit a second radio frequency maximum permissible exposure value of the multiple values, and the second radio frequency maximum permissible exposure value may be associated with a second transmission aspect of the UE. The UE may transmit the second radio frequency maximum permissible exposure value as a differential value based on the first radio frequency maximum permissible exposure value. A method for wireless communications at a user equipment (UE) is described. The method may include receiving control signaling that includes an indication that the UE is configured to report multiple values associated with maximum permissible exposure at the UE, each of the multiple values being of a same type but associated with different transmission aspects of the UE, the different transmission aspects including at least different transmission beams of the UE or different antenna panels of the UE, transmitting a first maximum permissible exposure value of the multiple values, the first maximum permissible exposure value associated with a first transmission aspect of the UE, and transmitting a second maximum permissible exposure value of the multiple values, the second maximum permissible exposure value associated with a second transmission aspect of the UE and transmitted as a differential value based on the first maximum permissible exposure value. An apparatus for wireless communications at a UE is described. The apparatus may include a processor, memory coupled with the processor, and instructions stored in the memory. The instructions may be executable by the processor to cause the apparatus to receive control signaling that includes an indication that the UE is configured to report multiple values associated with maximum permissible exposure at the UE, each of the multiple values being of a same type but associated with different transmission aspects of the UE, the different transmission aspects including at least different transmission beams of the UE or different antenna panels of the UE, transmi