US 11,728,853 B2
Wireless communication device with null steering capability
Ankit Sethi, Pune (IN); Sayak Roy, Kolkata (IN); and Sudhir Srinivasa, Los Gatos, CA (US)
Assigned to NXP USA, Inc., Austin, TX (US)
Filed by NXP USA, Inc., Austin, TX (US)
Filed on Apr. 19, 2021, as Appl. No. 17/301,937.
Prior Publication US 2022/0337294 A1, Oct. 20, 2022
Int. Cl. H04B 7/0456 (2017.01); H04B 7/06 (2006.01)
CPC H04B 7/0456 (2013.01) [H04B 7/0617 (2013.01); H04B 7/0626 (2013.01); H04B 7/0634 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A wireless communication device, comprising:
first and second links comprising a first set of antennae and a second set of antennae, respectively each link operable in a transmission mode and reception mode, wherein the first and second sets of antennae have a physical arrangement such that a null space of a channel matrix between the first link and the second link is non-zero, and wherein the first link is configured to:
obtain first channel state information that indicates a first channel measurement of a first set of channels observed from the second link to the first link, when the first link and the second link are calibrated to operate on a first frequency band;
determine, based on the first channel state information, a spatial mapping matrix that facilitates null steering of a signal transmission from the first link in a direction of the second link;
transmit to a first remote device, a first wireless signal on the first frequency band based on the spatial mapping matrix, wherein the first wireless signal is null steered in the direction of the second link; and
communicate a second wireless signal on a second frequency band based on the spatial mapping matrix when the first link communicates the first wireless signal to the first remote device, the second frequency band being different from the first frequency band.