Network assisted environmental sensing
Aspects relate to mechanisms for wireless communication devices to environmental sensing with the assistance of a network. A UE transmits an increase transmission power request message to a base station. The UE receives an increase transmission power acceptance message from the base station in response to transmitting the increase transmission power request message. The UE transmits a transmission using an increased transmission power for reflection by at least one object based on the increase transmission power acceptance message. The UE receives a reflection of the transmission reflected off the at least one object. The UE determines at least one parameter associated with the object based on the reflection of the transmission reflected off the at least one object.
1. A method of wireless communication performed by a user equipment (UE), comprising:
transmitting an increase transmission power request message to a base station;
receiving an increase transmission power acceptance message in response to transmitting the increase transmission power request message;
sending a transmission using an increased transmission power specified by the increase transmission power acceptance message;
receiving a reflection of the transmission reflected off at least one object; and
determining at least one parameter associated with the at least one object based on the reflection of the transmission reflected off the at least one object.
2. The method of claim 1 , wherein the at least one parameter comprises at least one of a position of the at least one object, a velocity of the at least one object, a rotation of the at least one object, or a direction of movement of the at least one object.
3. The method of claim 1 , wherein the transmission comprises at least one of a null transmission or a data transmission.
4. The method of claim 1 , wherein the transmission comprises a sounding reference signal (SRS).
5. The method of claim 1 , wherein the increase transmission power acceptance message comprises at least one of a scheduling downlink control information (DCI) message received via a physical downlink control channel (PDCCH), a MAC-CE message, or a radio resource control (RRC) signal.
6. The method of claim 1 , wherein the increased transmission power comprises a transmission power that is greater than a current transmission power control (TPC) state associated with the UE.
7. The method of claim 1 , wherein the increase transmission power request message comprises an indication of a requested increase transmission power relative to a current transmission power control (TPC) state associated with the UE.
8. The method of claim 1 , wherein the increased transmission power comprises a maximum transmission power associated with the UE.
9. The method of claim 1 , wherein the increase transmission power request message comprises at least one of an indication of one or more directions for transmitting the transmission or an indication of a determined bandwidth of the transmission.
10. The method of claim 9 , wherein the one or more directions comprise a direction of a location of the at least one object.
11. The method of claim 10 , wherein sending the transmission comprises transmitting the transmission towards at least the direction of the location of the at least one object.
12. A user equipment (UE) for wireless communication, comprising:
a transceiver;
a memory; and
a processor communicatively coupled to the transceiver and the memory, wherein the processor is configured to:
transmit, via the transceiver, an increase transmission power request message to a base station,
receive, via the transceiver, an increase transmission power acceptance message after transmission of the increase transmission power request message,
send, via the transceiver, a transmission using an increased transmission power specified by the increase transmission power acceptance message,
receive, via the transceiver, a reflection of the transmission reflected off at least one object, and
determine at least one parameter associated with the at least one object based on the reflection of the transmission reflected off the at least one object.
13. The UE of claim 12 , wherein the increase transmission power request message comprises at least one of an indication of one or more directions for transmitting the transmission or an indication of a determined bandwidth of the transmission.
14. The UE of claim 13 , wherein the one or more directions comprise a direction of a location of the at least one object.
15. The UE of claim 14 , wherein, to send the transmission, the processor is configured to send, via the transceiver, the transmission towards at least the direction of the location of the at least one object.
16. A method of wireless communication performed by a base station, comprising:
receiving an increase transmission power request message from a user equipment (UE);
transmitting an increase transmission power message to configure the UE to transmit a transmission at an increased transmission power;
scheduling one or more uplink (UL) transmissions to avoid interference with the transmission; and
receiving, after transmission of the increase transmission power message, a reflection of the transmission after the transmission is reflected off at least one object.
17. The method of claim 16 , wherein the one or more UL transmissions comprise at least one of a frequency division multiplexing (FDM) UL transmission or a multi-user, multiple-input, multiple-output (MU-MIMO) UL transmission.
18. The method of claim 17 , wherein scheduling the one or more UL transmissions comprises:
receiving an indication of one or more UL transmissions for reception by one or more other base stations to avoid the interference with the transmission.
19. The method of claim 16 , wherein the transmission comprises a beamformed transmission.
20. The method of claim 19 , wherein the increase transmission power message comprises an indication of a direction for transmitting the beamformed transmission that coincides with a direction of the at least one object.
21. The method of claim 16 , wherein the increased transmission power comprises a transmission power that is greater than a current transmission power control (TPC) state associated with the UE.
22. The method of claim 16 , wherein the at least one object is located a position that is not along a direct path between the UE and the base station.
23. A base station for wireless communication, comprising:
a transceiver;
a memory; and
a processor communicatively coupled to the transceiver and the memory, wherein the processor is configured to:
receive, via the transceiver, an increase transmission power request message from a user equipment (UE),
transmit, via the transceiver, an increase transmission power message to configure the UE to transmit a transmission at an increased transmission power,
schedule one or more uplink (UL) transmissions to avoid interference with the transmission, and
receive, via the transceiver after transmission of the increase transmission power message, a reflection of the transmission after the transmission is reflected off at least one object.
24. The base station of claim 23 , wherein the one or more UL transmissions comprise at least one of a frequency division multiplexing (FDM) UL transmission or a multi-user, multiple-input, multiple-output (MU-MIMO) UL transmission.
25. The base station of claim 24 , wherein, to schedule the one or more UL transmissions, the processor is configured to:
receive an indication of one or more UL transmissions for reception by one or more other base stations to avoid the interference with the transmission.
26. The base station of claim 23 , wherein the transmission comprises a beamformed transmission.
27. The base station of claim 26 , wherein, the increase transmission power message comprises an indication of a direction for transmitting the beamformed transmission that coincides with a direction of the at least one object.
28. The base station of claim 23 , wherein the increased transmission power comprises a transmission power that is greater than a current transmission power control (TPC) state associated with the UE.
29. The base station of claim 23 , wherein the at least one object is located a position that is not along a direct path between the UE and the base station.