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 message indicating:
a time window for detection of exposure instances that satisfy a measurement threshold and that are associated with at least one antenna panel of the wireless device; and
a reporting threshold, different from the measurement threshold, for reporting detected exposure instances associated with the at least one antenna panel; and
based on one or more exposure instances, detected during the time window and associated with a first antenna panel of the at least one antenna panel, satisfying the reporting threshold, transmitting an indication of the one or more exposure instances.
2 . The method of claim 1 , wherein the at least one message 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 message 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 , wherein the reporting threshold indicates a quantity of exposure instances that satisfy the measurement threshold.
7 . The method of claim 1 , further comprising:
determining, during the time window, the one or more exposure instances associated with the first antenna panel, wherein the determining the one or more exposure instances 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; or
a reference signal received power (RSRP) value associated with the first antenna panel.
8 . 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.
9 . 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.
10 . 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.
11 . The method of claim 1 , wherein the measurement threshold comprises a maximum permissible exposure threshold.
12 . The method of claim 1 , wherein the measurement threshold is satisfied by each of the one or more exposure instances.
13 . The method of claim 1 , wherein the at least one message further indicates the measurement threshold.
14 . A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, configure the wireless device to:
receive at least one message indicating:
a time window for detection of exposure instances that satisfy a measurement threshold and that are associated with at least one antenna panel of the wireless device; and
a reporting threshold, different from the measurement threshold, for reporting detected exposure instances associated with the at least one antenna panel; and
based on one or more exposure instances, detected during the time window and associated with a first antenna panel of the at least one antenna panel, satisfying the reporting threshold, transmit an indication of the one or more exposure instances.
15 . The wireless device of claim 14 , wherein the at least one message 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.
16 . The wireless device of claim 14 , wherein the instructions, when executed by the one or more processors, configure the wireless device to transmit the indication by transmitting at least one of:
a preamble, associated with a random access resource, indicating that the first antenna panel is associated with impermissible exposure;
a scheduling request (SR) indicating that the first antenna panel is associated with impermissible exposure; or
a sounding reference signal (SRS) indicating that the first antenna panel is associated with impermissible exposure.
17 . The wireless device of claim 14 , wherein the instructions, when executed by the one or more processors, configure the wireless device to transmit the indication by transmitting a power headroom report (PHR) comprising the indication.
18 . The wireless device of claim 14 , wherein the at least one message 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.
19 . The wireless device of claim 14 , wherein the reporting threshold indicates a quantity of exposure instances that satisfy the measurement threshold.
20 . The wireless device of claim 14 , wherein the instructions, when executed by the one or more processors, further configure the wireless device to:
determine, during the time window, the one or more exposure instances associated with the first antenna panel, wherein the one or more exposure instances are determined 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; or
a reference signal received power (RSRP) value associated with the first antenna panel.
21 . The wireless device of claim 14 , wherein the instructions, when executed by the one or more processors, configure the wireless device to transmit the indication by transmitting the indication 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.
22 . The wireless device of claim 14 , wherein the instructions, when executed by the one or more processors, further configure the wireless device to:
after the indication is transmitted, receive downlink control information indicating switching from the first antenna panel to a second antenna panel for uplink transmission.
23 . The wireless device of claim 14 , 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.
24 . A method comprising:
transmitting, by a base station, at least one message indicating:
a time window for detection of exposure instances that satisfy a measurement threshold and that are associated with at least one antenna panel of a wireless device; and
a reporting threshold, different from the measurement threshold, for reporting detected exposure instances associated with the at least one antenna panel; and
based on one or more exposure instances, detected during the time window and associated with a first antenna panel of the at least one antenna panel, satisfying the reporting threshold, receiving an indication of the one or more exposure instances.
25 . The method of claim 24 , wherein the at least one message 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.
26 . The method of claim 24 , wherein the receiving the indication comprises at least one of:
receiving a preamble, associated with a random access resource, indicating that the first antenna panel is associated with impermissible exposure;
receiving a scheduling request (SR) indicating that the first antenna panel is associated with impermissible exposure; or
receiving a sounding reference signal (SRS) indicating that the first antenna panel is associated with impermissible exposure.
27 . The method of claim 24 , wherein the receiving the indication comprises receiving a power headroom report (PHR) comprising the indication.
28 . The method of claim 24 , wherein the at least one message 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.
29 . The method of claim 24 , wherein the reporting threshold indicates a quantity of exposure instances that satisfy the measurement threshold.
30 . The method of claim 24 , wherein the one or more exposure instances are detected 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; or
a reference signal received power (RSRP) value associated with the first antenna panel.
31 . The method of claim 24 , further comprising:
based on the one or more exposure instances detected during the time window and associated with the first antenna panel of the at least one antenna panel, receiving one or more second indications that indicate 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.
32 . The method of claim 24 , further comprising:
after receiving the indication, transmitting downlink control information indicating switching from the first antenna panel to a second antenna panel for uplink transmission.
33 . The method of claim 24 , further comprising:
based on the one or more exposure instances detected during the time window and associated with the first antenna panel of the at least one antenna panel, receiving one or more second indications that indicate 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.
34 . A base station comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, configure the base station to:
transmit at least one message indicating:
a time window for detection of exposure instances that satisfy a measurement threshold and that are associated with at least one antenna panel of a wireless device; and
a reporting threshold, different from the measurement threshold, for reporting detected exposure instances associated with the at least one antenna panel; and
based on one or more exposure instances, detected during the time window and associated with a first antenna panel of the at least one antenna panel, satisfying the reporting threshold, receive an indication of the one or more exposure instances.
35 . The base station of claim 34 , wherein the at least one message 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.
36 . The base station of claim 34 , wherein the instructions, when executed by the one or more processors, configure the base station to receive the indication by receiving at least one of:
a preamble, associated with a random access resource, indicating that the first antenna panel is associated with impermissible exposure;
a scheduling request (SR) indicating that the first antenna panel is associated with impermissible exposure; or
a sounding reference signal (SRS) indicating that the first antenna panel is associated with impermissible exposure.
37 . The base station of claim 34 , wherein the instructions, when executed by the one or more processors, configure the base station to receive the indication by receiving a power headroom report (PHR) comprising the indication.
38 . The base station of claim 34 , wherein the at least one message 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.
39 . The base station of claim 34 , wherein the reporting threshold indicates a quantity of exposure instances that satisfy the measurement threshold.
40 . The base station of claim 34 , wherein the one or more exposure instances are detected 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; or
a reference signal received power (RSRP) value associated with the first antenna panel.
41 . The base station of claim 34 , wherein the instructions, when executed by the one or more processors, further configure the base station to:
based on the one or more exposure instances detected during the time window and associated with the first antenna panel of the at least one antenna panel, receive one or more second indications that indicate 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.
42 . The base station of claim 34 , wherein the instructions, when executed by the one or more processors, further configure the base station to:
after receiving the indication, transmit downlink control information indicating switching from the first antenna panel to a second antenna panel for uplink transmission.
43 . The base station of claim 34 , wherein the instructions, when executed by the one or more processors, further configure the base station to:
based on the one or more exposure instances detected during the time window and associated with the first antenna panel of the at least one antenna panel, receive one or more second indications that indicate 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.