US 11,675,200 B1
Antenna methods and systems for wearable devices
Christopher Hoover, Mountain View, CA (US); Jay Kothari, San Francisco, CA (US); Melvin Chua, Danville, CA (US); Alberto Vidal, Mountain View, CA (US); and Prasad Panchalan, Mountain View, CA (US)
Assigned to Google LLC, Mountain View, CA (US)
Filed by Google LLC, Mountain View, CA (US)
Filed on Dec. 20, 2021, as Appl. No. 17/556,041.
Application 17/556,041 is a division of application No. 16/221,219, filed on Dec. 14, 2018, abandoned.
Int. Cl. H04W 4/02 (2018.01); G01S 5/00 (2006.01); G01S 1/20 (2006.01); G01S 1/24 (2006.01); H04W 56/00 (2009.01); H04W 84/12 (2009.01); G01B 7/00 (2006.01); G01S 5/02 (2010.01); G01S 19/49 (2010.01); G06F 3/0346 (2013.01); G02B 27/01 (2006.01); G06F 1/16 (2006.01); H01Q 1/22 (2006.01)
CPC G02B 27/0176 (2013.01) [G06F 1/1658 (2013.01); H01Q 1/22 (2013.01); G01B 7/003 (2013.01); G01S 1/20 (2013.01); G01S 1/24 (2013.01); G01S 5/00 (2013.01); G01S 5/0289 (2013.01); G01S 19/49 (2013.01); G02B 27/017 (2013.01); G02B 2027/0178 (2013.01); G06F 1/163 (2013.01); G06F 1/1698 (2013.01); G06F 3/0346 (2013.01); H01Q 1/2291 (2013.01); H04W 4/02 (2013.01); H04W 4/025 (2013.01); H04W 4/026 (2013.01); H04W 56/0065 (2013.01); H04W 84/12 (2013.01)] 18 Claims
OG exemplary drawing
 
10. A head-mountable device comprising:
a Wi-Fi chipset operable for wireless data communications;
an inertial measurement unit;
a processor;
a non-transitory computer-readable medium comprising program instructions, which when executed by the processor, cause the processor to:
use the Wi-Fi chipset to transmit and receive packets to a plurality of access points or peer devices;
based on the transmitted and received packets, determine a respective round-trip time corresponding to each access point or peer device;
implement a Wi-Fi round trip time (RTT) process to determine a location of the head-mountable device based on the respective round-trip times for the plurality of access points or peer devices;
based on data generated by the inertial measurement unit, determine a pose of the head-mountable device;
determine a location of a first object in an environment of the head-mountable device; and
based on (a) the location and pose of the head mountable device, and (b) the location of the first object, determine a relative location of the first object, wherein determine the relative location of the first object comprises determining that the relative location of the first object is behind a wearer of the head-mountable device.