US Patent No. 9,860,868

METHOD AND SYSTEM FOR PROVIDING ENHANCED LOCATION BASED INFORMATION FOR WIRELESS HANDSETS USING DEAD RECKONING


Patent No. 9,860,868
Issue Date January 02, 2018
Title Method And System For Providing Enhanced Location Based Information For Wireless Handsets Using Dead Reckoning
Inventorship Clint Smith, Warwick, NY (US)
Alan Joseph J. Caceres, Brooklyn, NY (US)
Cesar Alfonso Aguilar, Brooklyn, NY (US)
Purnima Surampudi, Katy, TX (US)
Assignee RIVADA RESEARCH, LLC., Colorado Springs, CO (US)

Claim of US Patent No. 9,860,868

1. A method of providing an enhanced location based service via a mobile device, comprising:
receiving in a processor of a mobile device a first set of externally determined location information;
generating, via the processor executing a haversine function, a best stride length estimate based on the first set of externally
determined location information and a second set of location information;

generating by the processor a best altitude estimate based on barometer information and one or more of the first set of externally
determined location information and the second set of location information;

generating by the processor a best compass heading estimate based on magnetometer information and one or more of the first
set of externally determined location information and the second set of location information; and

generating by the processor dead reckoning location information based on the best stride length estimate, the best altitude
estimate, and the best compass heading estimate.