US 12,224,839 B2
Method for indicating a beam correspondence failure
Vasanthan Raghavan, West Windsor Township, NJ (US); Juergen Cezanne, Ocean Township, NJ (US); Junyi Li, Franklin Park, NJ (US); and Allen Minh-Triet Tran, Rancho Santa Fe, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Mar. 29, 2021, as Appl. No. 17/216,517.
Prior Publication US 2022/0311497 A1, Sep. 29, 2022
Int. Cl. H04B 7/06 (2006.01); H04B 7/08 (2006.01); H04W 16/28 (2009.01); H04W 24/08 (2009.01); H04W 76/19 (2018.01)
CPC H04B 7/0695 (2013.01) [H04W 16/28 (2013.01); H04W 24/08 (2013.01); H04W 76/19 (2018.02)] 30 Claims
OG exemplary drawing
 
1. A method for a first wireless communication device including a transmit antenna array and a receive antenna array, the transmit antenna array being separate from the receive antenna array, comprising:
forming a transmit beam in a first direction at the transmit antenna array and a receive beam in a second direction at the receive antenna array, wherein the transmit beam and the receive beam are formed for communication with a second wireless communication device;
wherein the first direction and the second direction point toward at least one object capable of passively reflecting, diffracting, or scattering wireless communication signals along a non-line of sight (NLOS) communication link to or from the second wireless communication device;
determining a signal strength threshold based on a difference between a peak gain value for the transmit beam or the receive beam and a threshold gain control value;
determining a beam correspondence threshold based on a beamwidth of the transmit beam or a beamwidth of the receive beam, wherein the beamwidth of the transmit beam or the beamwidth of the receive beam is determined based on the signal strength threshold for the transmit beam or the receive beam;
monitoring a difference between the first direction of the transmit beam and the second direction of the receive beam, wherein monitoring the difference comprises:
determining a distance from the transmit antenna array or the receive antenna array to the at least one object; and
determining a difference between the first direction and the second direction based on the distance from the transmit antenna array or the receive antenna array to the at least one object and a distance between the transmit antenna array and the receive antenna array; and
transmitting an indication of a beam correspondence failure to the second wireless communication device when the difference between the first direction and the second direction is greater than or equal to a beam correspondence threshold.