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US 11,894,909 B2Granted
Sensor assisted beam tracking
AssigneeApple Inc.
InventorsYakun Sun, Rohit U. Nabar, Mithat C. Dogan, Parvathanathan Subrahmanya, Han Yan, Louay Jalloul
Life of this patent
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Abstract
The present application relates to devices and components including apparatus, systems, and methods for determining a beam for communication between a user equipment and a base station. For example, angle of arrival estimates may be utilized for determining the beam for communication.
Claims17
One or more non-transitory computer-readable media having instructions that, when executed by one or more processors, cause a user equipment (UE) to:
- perform a plurality of beam measurements corresponding to a beam received by the UE;
- determine a plurality of local angle of arrival (AoA) estimates corresponding to the beam based on the plurality of beam measurements;
- convert the plurality of local AoA estimates to a plurality of global AoA estimates;
- determine a global AoA based on the plurality of global AoA estimates;
- utilize the global AoA for identification of a beam received from a base station;
- determine whether a reliability threshold has been achieved for the global AoA based on a probability of the global AoA being an actual global AoA;
- and
- determine which of a sensor based AoA estimation state or a sensor assisted beam tracking state is to be implemented based on whether the reliability threshold has been achieved.
5 more elements
A user equipment (UE) comprising:
- a sensor to determine a rotation of the UE;
- and
- processing circuitry coupled to the sensor, the processing circuitry to:
- perform a plurality of beam measurements corresponding to a beam received by the UE;
- determine orientations of the UE corresponding to each of the plurality of beam measurements;
- determine a plurality of local angle of arrival (AoA) estimates corresponding to the beam based on the plurality of beam measurements;
- convert the plurality of local AoA estimates to a plurality of global AoA estimates based on the orientations of the UE corresponding to each of the plurality of beam measurements;
- determine a global AoA based on overlap of the plurality of global AoA estimates;
- determine whether the global AoA meets a reliability threshold based on the probability for the global AoA being greater than a predetermined threshold;
- and
- determine whether the UE is to operate in a sensor based AoA estimation state or a sensor assisted beam tracking state based on whether the global AoA meets the reliability threshold.
8 more elements
A method for angle of arrival (AoA) determination, comprising:
- transmitting, by a base station, an indication of an orientation of a global coordinate system (GCS) to a user equipment (UE), the GCS to be utilized by the UE for determining a beam to be utilized for communication with the UE;
- transmitting, by the base station, a plurality of training signals to be utilized by the UE to determine a plurality of local AoA estimates for determination of a beam to be utilized for communication with the UE;
- identifying, by the base station received from the UE, an indication of the beam to be utilized for communication with the UE, the beam determined based on the plurality of local AoA estimates determined from the plurality of training signals;
- and
- utilizing, by the base station, the beam for transmissions to the UE.
2 more elements
Dependencies are inferred from the claim text.