公开(公告)号：US20190037348A1

公开(公告)日：2019-01-31

申请号：US16033404

申请日：2018-07-12

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Hoe Sung YANG ,  Seung Il MYONG ,  Kang Bok LEE ,  Jun Ho JIN

IPC: H04W4/02 ,  H04W72/04 ,  G01C21/12 ,  G01S5/10

CPC classification number: H04W4/023 ,  G01C21/12 ,  G01C21/165 ,  G01S5/0072 ,  G01S5/0284 ,  G01S5/10 ,  H04W72/0446 ,  H04W72/048

Abstract: A method of measuring inter-device relative coordinates performed by a first device communicating with at least one second device belonging to a group to which the first device belongs includes measuring a range between the first device and the second device through communication with the second device; receiving range information between a plurality of second devices from the second device; calculating a plurality of solutions for inter-device relative coordinates using information about the range between the first device and the second device and the range information between the plurality of second devices; and deducing a true solution among the plurality of solutions for the inter-device relative coordinates using coordinates of each of the first device and the at least one second device with respect to a reference origin that is calculated using a Pedestrian Dead Reckoning (PDR) technique.