Radar management based on interference detected over an air interface
Certain aspects of the present disclosure provide techniques for radar management based on interference detected over an air interface. A method that may be performed by a base station (BS) or a user equipment (UE) includes measuring received power at each of a plurality of receive-beams. The method may also include determining whether the measured power received at one or more of the plurality of receive-beams satisfies a threshold condition. If the measured power received at the one or more of the plurality of receive-beams satisfies the threshold condition, the method may also include selecting a directional transmit beam based on a direction of one of the one or more of the plurality of receive-beams that satisfy the threshold condition, and transmitting a radar waveform over the directional transmit beam.
1. A method of detecting interference by a network entity, comprising:
measuring, during a single slot, received power at each of a plurality of receive-beams;
determining whether the measured power received at one or more of the plurality of receive-beams satisfies a threshold condition;
if the measured power received at the one or more of the plurality of receive-beams satisfies the threshold condition:
selecting a directional transmit-beam based on a direction of one of the one or more of the plurality of receive-beams that satisfy the threshold condition; and
transmitting, during the single slot, a radar waveform over the directional transmit-beam.
2. The method of claim 1 , wherein selecting the directional transmit-beam further comprises determining which receive-beam of the one or more of the plurality of receive-beams, having measured power that satisfies the threshold condition, is associated with a lowest measured power among the one or more of the plurality of receive-beams, wherein the selected directional transmit-beam has a same direction as the receive-beam having the lowest measured power among the one or more of the plurality of receive-beams.
3. The method of claim 1 , wherein each of the plurality of receive-beams is characterized by an azimuth offset relative to another of the plurality of receive-beams.
4. The method of claim 1 , wherein each of the plurality of receive-beams is measured contiguously and for a duration of at least two symbols.
5. The method of claim 1 , wherein the single slot is a random access channel (RACH) slot in a time division duplex (TDD) carrier.
6. The method of claim 1 , further comprising, if the measured power received at the one or more of the plurality of receive-beams does not satisfy the threshold condition, measuring received power at each of the plurality of receive-beams during a different slot.
7. The method of claim 1 , wherein:
the single slot comprises a plurality of symbols;
the plurality of receive-beams comprise at least a first receive-beam and a second receive-beam, wherein the first receive-beam has a first duration of a first two symbols of the plurality of symbols, and wherein the second receive-beam has a second duration of a second two symbols of the plurality of symbols; and
the directional transmit-beam has a third duration of a third two symbols of the plurality of symbols.
8. The method of claim 1 , wherein measuring received power at each of the plurality of receive-beams comprises measuring a power-to-interference ratio at each of the plurality of receive-beams.
9. The method of claim 1 , wherein the network entity is a base station (BS) or a user equipment (UE).
10. A network entity configured to detect interference over an air interface, comprising:
a memory; and
a processor, wherein the processor is communicatively coupled to the memory and configured to:
measure, during a single slot, received power at each of a plurality of receive-beams;
determine whether the measured power received at one or more of the plurality of receive-beams satisfies a threshold condition;
if the measured power received at the one or more of the plurality of receive-beams satisfies the threshold condition, the processor is further configured to:
select a directional transmit-beam based on a direction of one of the one or more of the plurality of receive-beams that satisfy the threshold condition; and
transmit, during the single slot, a radar waveform over the directional transmit-beam.
11. The network entity of claim 10 , wherein the processor, being configured to select the directional transmit-beam, is further configured to:
determine which receive-beam of the one or more of the plurality of receive-beams, having measured power that satisfies the threshold condition, is associated with a lowest measured power among the one or more of the plurality of receive-beams, wherein the selected directional transmit-beam has a same direction as the receive-beam having the lowest measured power among the one or more of the plurality of receive-beams.
12. The network entity of claim 10 , wherein each of the plurality of receive-beams is characterized by an azimuth offset relative to another of the plurality of receive-beams.
13. The network entity of claim 10 , wherein each of the plurality of receive-beams is measured contiguously and for a duration of at least two symbols.
14. The network entity of claim 10 , wherein the single slot is a random access channel (RACH) slot in a time division duplex (TDD) carrier.
15. The network entity of claim 10 , wherein if the measured power received at the one or more of the plurality of receive-beams does not satisfy the threshold condition, the processor is further configured to measure received power at each of the plurality of receive-beams during a different slot.
16. The network entity of claim 10 , wherein:
the single slot comprises a plurality of symbols;
the plurality of receive-beams comprise at least a first receive-beam and a second receive-beam, wherein the first receive-beam has a first duration of a first two symbols of the plurality of symbols, and wherein the second receive-beam has a second duration of a second two symbols of the plurality of symbols; and
the directional transmit-beam has a third duration of a third two symbols of the plurality of symbols.
17. The network entity of claim 10 , wherein measuring received power at each of the plurality of receive-beams comprises measuring a power-to-interference ratio at each of the plurality of receive-beams.
18. The network entity of claim 10 , wherein the network entity is a base station (BS) or a user equipment (UE).
19. An apparatus for detecting interference, comprising:
means for measuring, during a single slot, received power at each of a plurality of receive-beams;
means for determining whether the measured power received at one or more of the plurality of receive-beams satisfies a threshold condition;
if the measured power received at the one or more of the plurality of receive-beams satisfies the threshold condition:
means for selecting a directional transmit-beam based on a direction of one of the one or more of the plurality of receive-beams that satisfy the threshold condition; and
means for transmitting, during the single slot, a radar waveform over the directional transmit-beam.
20. The apparatus of claim 19 , further comprising:
means for determining which receive-beam of the one or more of the plurality of receive-beams, having measured power that satisfies the threshold condition, is associated with a lowest measured power among the one or more of the plurality of receive-beams, wherein the selected directional transmit-beam has a same direction as the receive-beam having the lowest measured power among the one or more of the plurality of receive-beams.
21. The apparatus of claim 19 , wherein each of the plurality of receive-beams is characterized by an azimuth offset relative to another of the plurality of receive-beams.
22. The apparatus of claim 19 , wherein each of the plurality of receive-beams is measured contiguously and for a duration of at least two symbols.
23. The apparatus of claim 19 , wherein the single slot is a random access channel (RACH) slot in a time division duplex (TDD) carrier.
24. The apparatus of claim 19 , further comprising, if the measured power received at the one or more of the plurality of receive-beams does not satisfy the threshold condition, means for measuring received power at each of the plurality of receive-beams during a different slot.
25. The apparatus of claim 19 , wherein:
the single slot comprises a plurality of symbols;
the plurality of receive-beams comprise at least a first receive-beam and a second receive-beam, wherein the first receive-beam has a first duration of a first two symbols of the plurality of symbols, and wherein the second receive-beam has a second duration of a second two symbols of the plurality of symbols; and
the directional transmit-beam has a third duration of a third two symbols of the plurality of symbols.
26. The apparatus of claim 19 , wherein the means for measuring received power at each of the plurality of receive-beams comprises means for measuring a power-to-interference ratio at each of the plurality of receive-beams.
27. A non-transitory computer readable storage medium that stores instructions that when executed by a processor of an apparatus cause the apparatus to perform a method of detecting interference over an air interface comprising:
measuring, during a single slot, received power at each of a plurality of receive-beams;
determining whether the measured power received at one or more of the plurality of receive-beams satisfies a threshold condition;
if the measured power received at the one or more of the plurality of receive-beams satisfies the threshold condition:
selecting a directional transmit-beam based on a direction of one of the one or more of the plurality of receive-beams that satisfy the threshold condition; and
transmitting, during the single slot, a radar waveform over the directional transmit-beam.
28. The non-transitory computer readable storage medium of claim 27 , wherein the method further comprises determining which receive-beam of the one or more of the plurality of receive-beams, having measured power that satisfies the threshold condition, is associated with a lowest measured power among the one or more of the plurality of receive-beams, wherein the selected directional transmit-beam has a same direction as the receive-beam having the lowest measured power among the one or more of the plurality of receive-beams.
29. The non-transitory computer readable storage medium of claim 27 , wherein each of the plurality of receive-beams is characterized by an azimuth offset relative to another of the plurality of receive-beams.
30. The non-transitory computer readable storage medium of claim 27 , wherein each of the plurality of receive-beams is measured contiguously and for a duration of at least two symbols.