Publications
Detailed Information
Device Positioning Scheme in LTE Network with D2D Signal : LTE 네트워크에서 단말 간 직접 통신 신호를 이용한 단말 위치추정 기법
Cited 0 time in
Web of Science
Cited 0 time in Scopus
- Authors
- Advisor
- 이광복
- Major
- 공과대학 전기·컴퓨터공학부
- Issue Date
- 2015-02
- Publisher
- 서울대학교 대학원
- Keywords
- positioning ; OTDOA ; D2D communication ; centroid positioning ; positioning accuracy prediction
- Description
- 학위논문 (석사)-- 서울대학교 대학원 : 전기·컴퓨터공학부, 2015. 2. 이광복.
- Abstract
- In this paper, we study a positioning scheme with device-to-device (D2D) communications in LTE networks. Recently, there has been increasing interest in a positioning technique to support location-based services (LBS). Various positioning techniques are supported in LTE networks such as assisted global navigation satellite system (A-GNSS) and observed time difference of arrival (OTDOA). With emerge of D2D communications in LTE networks, positioning technique based on D2D communication attracts growing attention. A-GNSS provides more accurate positioning service than other positioning technique but it is not available in indoor or urban environments. The accuracy of OTDOA and centroid positioning changes due to the surrounding environment, i.e., position of base stations, distances to base stations, and density of neighbor D2D devices. We derive the mathematical analysis to predict the positioning accuracy of centroid positioning based on the gathered information about surrounding environments. Based on the analysis, hybrid positioning scheme, which exploits a strength of OTDOA and centroid positioning is proposed. The proposed hybrid positioning scheme dynamically selects the positioning scheme which is expected to have better performance in accordance with collected information. Numerical results show that the proposed hybrid positioning scheme achieves better performance than conventional positioning schemes for various environments.
- Language
- English
- Files in This Item:
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.