Invention Grant
- Patent Title: Method for measuring distance between terminals on basis of device-to-device direct communication in wireless communication system, and device for same
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Application No.: US14909672Application Date: 2014-08-28
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Publication No.: US10009786B2Publication Date: 2018-06-26
- Inventor: Hanbyul Seo , Byounghoon Kim , Suckchel Yang
- Applicant: LG ELECTRONICS INC.
- Applicant Address: KR Seoul
- Assignee: LG Electronics Inc.
- Current Assignee: LG Electronics Inc.
- Current Assignee Address: KR Seoul
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- International Application: PCT/KR2014/008008 WO 20140828
- International Announcement: WO2015/030494 WO 20150305
- Main IPC: H04W4/00
- IPC: H04W4/00 ; G01R31/08 ; G06F11/00 ; G08C15/00 ; H04J1/16 ; H04J3/14 ; H04L1/00 ; H04B1/00 ; H04W24/00 ; H04W24/10 ; G01S11/02 ; H04W88/02 ; H04W8/00 ; H04W64/00 ; G01S5/02 ; G01S5/14

Abstract:
A method is provided for calculating a distance to a counterpart user equipment (UE) using device-to-device (D2D) communication, which is calculated by a UE in a wireless communication system. The UE receives a synchronization signal from a cluster head and receives a first discovery signal from the counterpart UE, and calculates a first difference value between a time of receiving the first discovery signal and a time of receiving the synchronization signal. The UE further receives, from the counterpart UE, information on a second difference value and calculates a first sum value of the first difference value and the second difference value. The UE receives, from the cluster head, information on a second sum value. The UE calculates a distance between the UE and the counterpart UE based on a difference between the second sum value and the first sum value.
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