Patent Number: 8,791,857

Title: System and method for indoor location tracking using pseudo GPS signal transmitter

Abstract: To track the location of a terminal in an indoor space by using a pseudo GPS signal transmitter, a GPS signal sent from an artificial satellite is received, and a clock signal of the artificial satellite is extracted from the received GPS signal to perform synchronization with the artificial satellite. Once synchronization with the artificial satellite is performed, a pseudo GPS signal is generated, and the transmission time of the pseudo GPS signal is controlled. The GPS signal is sent to the terminal located in the indoor space by a plurality of transmitting antennas based on the controlled transmission time, thereby enabling the terminal located in the indoor space to track its location.

Inventors: Mo; Sang Hyun (Daejeon, KR), Lee; Heyung Sub (Daejeon, KR), Lee; Jae Heum (Daejeon, KR), Myong; Seung-Il (Daejeon, KR), Yang; Hoe-Sung (Daejeon, KR), Lee; Kang Bok (Daejeon, KR), Pyo; Cheol Sig (Daejeon, KR)

Assignee: Electronics and Telecommunications Research Institute

International Classification: G01S 19/11 (20100101)

Expiration Date: 7/29/12018