Beam tracking for 5G millimeter-wave systems
AssigneeIntel Corporation
InventorsOner Orhan, Hosein Nikopour, Shilpa Talwar, Yang-Seok Choi, Venkatesan Nallampatti Ekambaram
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Abstract
Aspects of mmWave beam tracking and beam sweeping are described, for example, an apparatus can include an antenna array including sub-arrays and processing circuitry configured to perform beamforming, beam tracking, and management thereof at the antenna sub-arrays. The processing circuitry can further be configured to determine the angle of arrival of a received signal received in response to performing the beamforming function and adjust phase shifters of the apparatus according to the angle of arrival. Other apparatuses, systems and methods are described.
Claims17
An apparatus of a wireless communication device, comprising:
- an antenna array including Nr antennas and
- N
- r
- N
- r
- rf
- antenna sub-arrays, where Nrrf indicates a number of RF-chains of the apparatus;
- and
- processing circuitry configured to:
- perform a beamforming function at the
- N
- r
- N
- r
- rf
- antenna sub-arrays;
- determine an angle of arrival of a received signal received in response to performing the beamforming function, wherein the angle of arrival is determined by:
- steering each sub-array toward each of
- N
- r
- N
- r
- rf
-
- 2
-
- d
- λ
- grating angles, where d is the distance between each sub-array and λ is the wavelength of the received signal;
- and
- selecting the grating angle having the largest measured power gain as the angle of arrival;
- and
- adjust phase shifters of the apparatus according to the angle of arrival.
An apparatus of a wireless communication device, comprising:
- an antenna array;
- and
- processing circuitry coupled to the antenna array and configured to:
- perform a beamforming function at a first subframe of a first frame, using a multi-finger beam forming vector to generate a first multi-finger beamforming pattern, the first multi-finger beamforming pattern including a main beam and a first secondary beam;
- perform the beamforming function at a first subframe of a second frame subsequent to the first frame, using a multi-finger beam forming vector to generate a second multi-finger beamforming pattern, the second multi-finger beamforming pattern including the main beam and a second secondary beam;
- and
- change azimuthal angle of the main beam in subsequent frames responsive to detecting a change in received power between the first frame and the second frame.
An apparatus of a wireless communication device, comprising:
- an antenna array configured to receive a signal including a plurality of beams;
- and
- processing circuitry coupled to the antenna array and configured to:
- detect a first beam of the plurality of beams received at the antenna array;
- suppress energy from the first beam within the received signal based on a weight vector corresponding to the first beam;
- and
- detect a second beam within the received signal subsequent to having suppressed energy from the first beam within the received signal.
Dependencies are inferred from the claim text.