Sensor-assisted millimeter-wave beam management
This application describes systems and processes for sensor-assisted antenna and beam selection for wireless networks. The systems and processes are configured to detect out of coverage (OoC) scenarios and perform beam management in response to detecting the OoC scenario. The systems and methods are configured to perform beam management during baseband interruption scenarios. In each scenario, the device (e.g., user equipment UE) is configured to determine whether the UE is static or mobile.
1. A method, comprising:
obtaining motion data from one or more motion sensors coupled to a wireless device;
determining, based at least on the motion data, that the wireless device is static relative to a remote device that is in communication with the wireless device using a beam generated by the wireless device;
obtaining data representing one or more link metrics of the beam, the one or more link metrics being associated with a period of time that the wireless device is static;
determining, from the one or more link metrics, a link stability value associated with the beam, for the period of time that the wireless device is static;
determining that the wireless device is out of coverage (OoC) with respect to the remote device based on the link stability value associated with the beam;
in response to determining that the wireless device is OoC with respect to the remote device, selecting a first beam group including one or more first beams generated by the wireless device;
determining, for each beam of the first beam group, a respective link stability value for the beam;
selecting, based on the determining, a particular beam of the one or more first beams; and
reestablishing communication with the remote device using the particular beam.
2. The method of claim 1 , wherein determining that the wireless device is out of coverage (OoC) with respect to the remote device based on the link stability value associated with the beam comprises:
comparing the link stability value to a predetermined threshold value; and
determining that the link stability value fails to satisfy the predetermined threshold value based on the comparing.
3. The method of claim 2 , wherein the predetermined threshold value is determined using a machine learning model trained with link metric data that are labeled as representing an unstable link of an OoC scenario or a stable link of a line of sight (LOS) scenario.
4. The method of claim 2 , wherein the link stability value represents a standard deviation of a link metric of the one or more link metrics.
5. The method of claim 2 , wherein the link stability value represents a minimum value of a link metric of the one or more link metrics.
6. The method of claim 1 , wherein the one or more link metrics include at least one of a signal to noise (SNR) ratio of a signal received from the remote device, a delay spread value of the signal, a magnitude of a change in an angle of arrival (AoA) of the signal, or a reference signal received power (RSRP) of the signal.
7. The method of claim 1 , wherein selecting a particular beam comprises selecting a first beam of the first beam group, associated with a respective link stability value that satisfies a threshold link stability value.
8. The method of claim 1 , wherein selecting a particular beam comprises:
determining that the first beam group does not include any beam that is associated with a link stability value satisfying a link stability threshold;
in response to the determining, selecting a second beam group, wherein second beams of the second beam group are further from the beam than the first beams of the first beam group; and
selecting a second beam from the second beam group.
9. The method of claim 1 , wherein the one or more motion sensors comprise at least an accelerometer or a gyroscope.
10. The method of claim 1 , wherein the wireless device and the remote device are configured for mmWave communication using frequency range 2 (FR2).
11. The method of claim 1 , further comprising retrieving the motion data periodically to determine if the wireless device is moving or is static.
12. The method of claim 1 , wherein the wireless device includes an antenna array including at least a specified number of beam configurations, and wherein selecting the particular beam comprises selecting one of the at least specified number of beam configurations.
13. One or more processors for a user equipment (UE), the one or more processors comprising:
circuitry configured to communicate with a remote device; and
circuitry to execute one or more instructions that, when executed, cause the one or more processors to perform operations comprising:
obtaining motion data from one or more motion sensors coupled to a wireless device;
determining, based at least on the motion data, that the wireless device is static relative to a remote device that is in communication with the wireless device using a beam generated by the wireless device;
obtaining data representing one or more link metrics of the beam, the one or more link metrics being associated with a period of time that the wireless device is static;
determining, from the one or more link metrics, a link stability value associated with the beam, for the period of time that the wireless device is static;
determining that the wireless device is out of coverage (OoC) with respect to the remote device based on the link stability value associated with the beam;
in response to determining that the wireless device is OoC with respect to the remote device, selecting a first beam group including one or more first beams generated by the wireless device;
determining, for each beam of the first beam group, a respective link stability value for the beam;
selecting, based on the determining, a particular beam of the one or more first beams; and
reestablishing communication with the remote device using the particular beam.