Apparatus, system, and method of scheduling radar transmissions
For example, an apparatus may include a scheduler configured to determine scheduling information to schedule radar transmissions of a radar device during a sequence of radar frames. For example, the scheduler may be configured to determine a burst-based frame setting to schedule a sequence of radar burst transmissions during a radar frame of the sequence of radar frames. In one example, the burst-based frame setting may include a setting of a burst gap duration. In one example, the burst gap duration may include a duration of a burst gap between first and second consecutive radar burst transmissions of the sequence of radar burst transmissions.
1 . An apparatus comprising:
a scheduler configured to determine scheduling information to schedule radar transmissions of a radar device during a sequence of radar frames, wherein the scheduler is configured to determine a burst-based frame setting to schedule a sequence of radar burst transmissions during a radar frame of the sequence of radar frames, the burst-based frame setting comprising a setting of a burst gap duration, the burst gap duration comprising a duration of a burst gap between first and second consecutive radar burst transmissions of the sequence of radar burst transmissions, wherein the burst gap is in a low-power state relative to a power state of the sequence of radar burst transmissions; and
an output to provide an output based on the scheduling information to cause the radar device to transmit the sequence of radar burst transmissions.
2 . The apparatus of claim 1 , wherein the scheduler is configured to set the burst gap duration based on a memory size of a memory to store received signals of the radar transmissions.
3 . The apparatus of claim 1 , wherein the scheduler is configured to set the burst gap duration based on a sampling rate of received radar signals at a Radio-Frequency (RF) frontend of the radar device, and based on a bandwidth of an interface between the RF frontend and a radar processor.
4 . The apparatus of claim 1 , wherein the scheduler is configured to set the burst gap duration based on a rate to provide radar signal information from a memory of the radar device to a radar processor, wherein the radar signal information is based on received signals of the radar transmissions.
5 . The apparatus of claim 1 , wherein the scheduler is configured to determine the burst-based frame setting based on at least one radar performance parameter of the radar device.
6 . The apparatus of claim 5 , wherein the scheduler is configured to determine a first burst-based frame setting based on a first setting of the at least one radar performance parameter, and to determine a second burst-based frame setting based on a second setting of the at least one radar performance parameter, wherein the first setting of the at least one radar performance parameter is different from the second setting of the at least one radar performance parameter, and the first burst-based frame setting is different from the second burst-based frame setting.
7 . The apparatus of claim 6 , wherein the first burst-based frame setting comprises a first burst gap duration, and the second burst-based frame setting comprises a second burst gap duration different from the first burst gap duration.
8 . The apparatus of claim 6 , wherein the first setting of the at least one radar performance parameter comprises a first Signal to Noise Ratio (SNR), and the second setting of the at least one radar performance parameter comprises a second SNR greater than the first SNR, wherein the first burst-based frame setting comprises a first burst gap duration, and the second burst-based frame setting comprises a second burst gap duration longer than the first burst gap duration.
9 . The apparatus of claim 6 , wherein the first setting of the at least one radar performance parameter comprises a first range resolution level, and the second setting of the at least one radar performance parameter comprises a second range resolution level greater than the first range resolution level, wherein the first burst-based frame setting comprises a first burst gap duration, and the second burst-based frame setting comprises a second burst gap duration longer than the first burst gap duration.
10 . The apparatus of claim 6 , wherein the first setting of the at least one radar performance parameter comprises a first velocity resolution level, and the second setting of the at least one radar performance parameter comprises a second velocity resolution level greater than the first velocity resolution level, wherein the first burst-based frame setting comprises a first burst gap duration, and the second burst-based frame setting comprises a second burst gap duration longer than the first burst gap duration.
11 . The apparatus of claim 6 , wherein the first burst-based frame setting comprises a first value of a burst transmission count, and the second burst-based frame setting comprises a second value of the burst transmission count, the burst transmission count comprising a count of radar burst transmissions in the sequence of radar burst transmissions, wherein the second value of the burst transmission count is greater than the first value of the burst transmission count.
12 . The apparatus of claim 1 , wherein the burst-based frame setting comprises a setting of at least one of a burst transmission duration, a burst transmission bandwidth, or a burst transmission count, wherein the burst transmission duration comprises a duration of a radar burst transmission of the sequence of radar burst transmissions, wherein the burst transmission bandwidth comprises a frequency bandwidth of the radar burst transmission, wherein the burst transmission count comprises a count of radar burst transmissions in the sequence of radar burst transmissions.
13 . The apparatus of claim 1 , wherein the sequence of radar burst transmissions comprises a repetitive sequence of identical radar burst transmissions separated by a constant burst gap.
14 . The apparatus of claim 1 comprising a controller configured to control the radar transmissions of the radar device according to the scheduling information, wherein the controller is configured to change one or more radar signal parameters between the first and second consecutive burst transmissions.
15 . The apparatus of claim 1 , wherein the output comprises transmission information to configure the radar transmissions according to the scheduling information.
16 . The apparatus of claim 1 comprising a processor configured to generate radar information based on radar data, the radar data based on the radar transmissions.
17 . A product comprising one or more tangible computer-readable non-transitory storage media comprising instructions operable to, when executed by at least one processor, cause a scheduler to:
determine scheduling information to schedule radar transmissions of a radar device during a sequence of radar frames, wherein determining the scheduling information comprises determining a burst-based frame setting to schedule a sequence of radar burst transmissions during a radar frame of the sequence of radar frames, the burst-based frame setting comprising a setting of a burst gap duration, the burst gap duration comprising a duration of a burst gap between first and second consecutive radar burst transmissions of the sequence of radar burst transmissions, wherein the burst gap is in a low-power state relative to a power state of the sequence of radar burst transmissions; and
provide an output based on the scheduling information to cause the radar device to transmit the sequence of radar burst transmissions.
18 . The product of claim 17 , wherein the instructions, when executed, cause the scheduler to determine the burst-based frame setting based on at least one radar performance parameter of the radar device.
19 . A vehicle comprising:
a system controller configured to control one or more vehicular systems of the vehicle based on radar information; and
a radar system configured to generate the radar information, the radar system comprising:
a plurality of Transmit (Tx) antennas to transmit radar Tx signals;
a plurality of Receive (Rx) antennas to receive radar Rx signals based on the radar Tx signals;
a scheduler configured to determine scheduling information to schedule radar transmissions of the radar system during a sequence of radar frames, wherein the scheduler is configured to determine a burst-based frame setting to schedule a sequence of radar burst transmissions during a radar frame of the sequence of radar frames, the burst-based frame setting comprising a setting of a burst gap duration, the burst gap duration comprising a duration of a burst gap between first and second consecutive radar burst transmissions of the sequence of radar burst transmissions, wherein the burst gap is in a low-power state relative to a power state of the sequence of radar burst transmissions; and
a processor configured to determine the radar information based on the radar Rx signals.
20 . The vehicle of claim 19 , wherein the scheduler is configured to determine the burst-based frame setting based on at least one radar performance parameter of the radar system.