US 12,418,332 B2
Method, apparatus, and system for measuring a MIMO channel
Yiqun Ge, Kanata (CA); Wuxian Shi, Guangdong (CN); and Wen Tong, Kanata (CA)
Assigned to HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Guangdong (CN)
Filed on Oct. 7, 2023, as Appl. No. 18/482,874.
Application 18/482,874 is a continuation of application No. PCT/CN2021/090776, filed on Apr. 28, 2021.
Prior Publication US 2024/0039603 A1, Feb. 1, 2024
Int. Cl. H04L 1/02 (2006.01); H04B 7/0426 (2017.01); H04B 7/0456 (2017.01); H04B 7/06 (2006.01)
CPC H04B 7/063 (2013.01) [H04B 7/0434 (2013.01); H04B 7/0486 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
receiving reference signals on each of L respective time intervals to generate reference signal vectors, each reference signal vector comprising M elements, where each of the M elements of a reference signal vector is a set of reference signals received from N transmit antennas on a respective receive antenna of M receive antennas, and where M, N and L are integer values;
generating an L×L reference signal matrix from a N×L reference signal matrix, wherein the N×L reference signal matrix comprises L augmented reference signal vectors and each of the L augmented reference signal vectors comprising N elements, the N elements being generated by adding N-M zero valued elements to the reference signal vector of M elements, wherein a dimension of the L×L reference signal matrix is less than a dimension of the N×L reference signal matrix; and
determining a rank of the L×L reference signal matrix.