Exposure detection and reporting for wireless communications
Wireless communications may use one or more devices for transmission and/or reception that may lead to potentially harmful exposure. One or more safety measures may be used for wireless communication devices, such as maximum power exposure (MPE) reporting and/or related operations. A time window may be used to detect a quantity of exposure instances. A message may be sent indicating exposure, for example, based on a quantity of exposure events during the time window satisfying a threshold.
1. A method comprising:
receiving, by a wireless device, at least one configuration parameter indicating:
a time window for exposure detection associated with at least one antenna panel of the wireless device; and
a threshold associated with exposure instances;
determining, during the time window, a quantity of exposure instances associated with a first antenna panel of the at least one antenna panel; and
transmitting, based on the quantity of exposure instances satisfying the threshold, an indication indicating that the first antenna panel is associated with impermissible exposure.
2. The method of claim 1 , wherein the at least one configuration parameter further indicates at least one of:
a random access resource for exposure reporting associated with the at least one antenna panel of the wireless device;
a scheduling request (SR) configuration for exposure reporting associated with the at least one antenna panel of the wireless device; or
a sounding reference signal (SRS) resource for exposure reporting associated with the at least one antenna panel of the wireless device.
3. The method of claim 1 , wherein the transmitting the indication comprises at least one of:
transmitting a preamble, associated with a random access resource, indicating that the first antenna panel is associated with impermissible exposure;
transmitting a scheduling request (SR) indicating that the first antenna panel is associated with impermissible exposure; or
transmitting a sounding reference signal (SRS) indicating that the first antenna panel is associated with impermissible exposure.
4. The method of claim 1 , wherein the transmitting the indication comprises transmitting a power headroom report (PHR) comprising the indication, and wherein the method further comprises delaying transmission of the indication until the transmitting the PHR.
5. The method of claim 1 , wherein the at least one configuration parameter comprises at least one configuration parameter for the at least one antenna panel, and wherein each antenna panel of the at least one antenna panel is associated with a plurality of uplink transmission configuration indication (TCI) states.
6. The method of claim 1 , further comprising:
determining, during the time window, at least one exposure instance associated with the first antenna panel, wherein the determining the at least one exposure instance is based on at least one of:
a transmission power reduction value associated with the first antenna panel;
an uplink duty cycle value associated with the first antenna panel;
a power threshold; or
a reference signal received power (RSRP) value associated with the first antenna panel.
7. The method of claim 1 , wherein the transmitting the indication is further based on at least one of:
a cell activation associated with the wireless device;
a bandwidth part (BWP) switching associated with the wireless device; or
a transition of the wireless device from a discontinuous reception (DRX) inactive time to a DRX active time.
8. The method of claim 1 , further comprising:
after transmitting the indication, receiving downlink control information indicating switching from the first antenna panel to a second antenna panel for uplink transmission.
9. The method of claim 1 , wherein the indication indicates at least one of:
an uplink coverage loss associated with the first antenna panel;
a transmission power reduction value associated with the first antenna panel; or
a second transmission power reduction value associated with a second antenna panel of the at least one antenna panel.
10. The method of claim 1 , wherein the threshold indicates a positive integer corresponding to an impermissible number of exposure instances during the time window.
11. A method comprising:
receiving, by a wireless device, at least one configuration parameter indicating a random access resource for exposure reporting associated with at least one antenna panel of the wireless device;
determining that, during a time window, a quantity of exposure instances associated with a first antenna panel of the at least one antenna panel satisfies a threshold; and
transmitting, based on the determining, a preamble associated with the random access resource and indicating that the first antenna panel is associated with impermissible exposure.
12. The method of claim 11 , wherein the at least one configuration parameter indicates:
the time window for exposure detection associated with the at least one antenna panel of the wireless device; and
the threshold.
13. The method of claim 11 , wherein the at least one configuration parameter comprises at least one configuration parameter for the at least one antenna panel, and wherein each antenna panel of the at least one antenna panel is associated with a plurality of uplink transmission configuration indication (TCI) states.
14. The method of claim 11 , further comprising determining, during the time window and based on a transmission power reduction value associated with the first antenna panel, the quantity of exposure instances associated with the first antenna panel.
15. The method of claim 11 , further comprising:
after transmitting the preamble, receiving a response indicating switching from the first antenna panel to a second antenna panel for uplink transmission.
16. The method of claim 11 , wherein the threshold indicates a positive integer corresponding to an impermissible number of exposure instances during the time window.
17. A method comprising:
receiving, by a wireless device, at least one configuration parameter indicating a scheduling request (SR) configuration for exposure reporting associated with at least one antenna panel of the wireless device;
determining that, during a time window, a quantity of exposure instances associated with a first antenna panel of the at least one antenna panel satisfies a threshold; and
transmitting, based on the determining and based on the SR configuration, an SR indicating that the first antenna panel is associated with impermissible exposure.
18. The method of claim 17 , wherein the at least one configuration parameter indicates:
the time window for exposure detection associated with the at least one antenna panel of the wireless device; and
the threshold.
19. The method of claim 17 , wherein the at least one configuration parameter comprises at least one configuration parameter for the at least one antenna panel, and wherein each antenna panel of the at least one antenna panel is associated with a plurality of uplink transmission configuration indication (TCI) states.
20. The method of claim 17 , further comprising determining, during the time window and based on a transmission power reduction value associated with the first antenna panel, the quantity of exposure instances associated with the first antenna panel.
21. The method of claim 17 , wherein the SR configuration comprises a physical uplink control channel (PUCCH) resource associated with the first antenna panel.
22. The method of claim 17 , wherein the at least one configuration parameter indicates a second SR configuration for exposure reporting associated with a second antenna panel of the at least one antenna panel.
23. The method of claim 17 , wherein the threshold indicates a positive integer corresponding to an impermissible number of exposure instances during the time window.