US 11,889,436 B2
Calibration of group delay in a mobile device
Jay King, San Diego, CA (US); Alexander Dorosenco, El Cajon, CA (US); Muhammad Sayed Khairy Abdelghaffar, San Jose, CA (US); Joseph Binamira Soriaga, San Diego, CA (US); Carl Hardin, Encinitas, CA (US); Alexandros Manolakos, San Diego, CA (US); James Krysl, San Diego, CA (US); Michael Allen Kongelf, Los Altos Hills, CA (US); Krishna Kiran Mukkavilli, San Diego, CA (US); Tingfang Ji, San Diego, CA (US); and Joseph Patrick Burke, San Diego, CA (US)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Aug. 17, 2020, as Appl. No. 16/995,658.
Prior Publication US 2022/0053435 A1, Feb. 17, 2022
Int. Cl. H04W 56/00 (2009.01)
CPC H04W 56/0005 (2013.01) [H04W 56/004 (2013.01); H04W 56/009 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A method of calibration of group delay within a mobile device in a wireless network, the method comprising:
sending a first signal on a transmission path;
receiving the first signal on a reception path, wherein the first signal sent on the transmission path by the mobile device is fed back by the mobile device in a closed loop and received by the mobile device on the reception path, wherein the closed loop comprises a near field radiated closed loop that includes a first antenna of the mobile device that transmits the first signal and a second antenna of the mobile device that receives the first signal;
determining a transmission and reception group delay within the mobile device based on at least (1) a time of transmission of the first signal on the transmission path at a modem, (2) a time of arrival of the first signal on the reception path at the modem, and (3) a reduction in a first time between the time of transmission and the time of arrival by a second time associated with a coupling path between the first antenna and the second antenna; and
setting a measured processing delay of the mobile device based on the transmission and reception group delay within the mobile device.