The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

Design and Implementation of Assisted GPS Navigation Systems Using TPEG Protocol of Terrestrial DMB Data Services

지상파 DMB 데이터 서비스의 TPEG프로토콜을 이용한 Assisted GPS 항법 시스템의 설계 및 구현

  • Received : 2010.09.27
  • Accepted : 2010.11.08
  • Published : 2010.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we propose a new assisted global positioning system (A-GPS) using terrestrial digital multimedia broadcasting (T-DMB) data services. Because of the weak signal strength from GPS satellite and the signal blockage, it is difficult for the telematics terminal to determine the position in urban area. Proposed A-GPS system calculates pseudo range (PR) from timing information of GPS satellites and obtains the satellite information such as ephemeris from T-DMB station to determine the current position. Compared to conventional GPS system, the proposed system has better performance in terms of the fast time to first fix (TTFF), low horizontal dilution of precision (HDOP). Experimental results show that the proposed system is a feasible and robust solution.

이 논문에서 지상파 DMB (T-DMB)의 데이터 서비스를 이용한 새로운 assisted GPS (A-GPS) 시스템을 제안한다. GPS 위성에서 전달되는 약한 신호와 신호 차단 때문에 델리매틱 단말기는 도심 환경에서 위치 결정에 어려움을 가지고 있다. 제안된 A-GPS 시스템은 GPS 위성으로부터 수신된 신호로부터 가상 거리를 계산하고 T-DMB 방송국으로부터 위성 정보 (ephemeris)를 수신하여 단말기의 위치를 결정하게 된다. GPS 시스템과 비교하여 제안된 시스템은 빠른 TTFF (time to first fix), 낮은 HDOP (horizontal dilution of position) 등의 향상된 성능을 보여준다. 실험을 통하여 제안된 시스템은 A-GPS 시스템으로서 구현 가능하고 강력한 방법이라는 사실을 확인할 수 있다.

Keywords

References

  1. Y. Zhao, "Mobile Phone Location Determination and Its Impact on Intelligent Transportation Systems" IEEE Trans. Intelligent Transportation Systems, Vol. 1, No. 1, pp. 55-64, Mar. 2000. https://doi.org/10.1109/6979.869021
  2. Goran M. Djuknic, Robert E. Richton, "Geolocation and Assisted GPS," Computer, Vol. 34, No. 2, pp. 123-125, Feb., 2001. https://doi.org/10.1109/2.901174
  3. ETSI EN 301 401 Ver.1.3.3, "Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to Mobile, Potable and Fixed Receiver", May 2001.
  4. Y. Jeong and W. Kim, "A Novel TPEG Application for Location Based Service using Terrestrial-DMB" IEEE Trans. Consumer Electron., Vol. 52, No. 1, Feb. 2006.
  5. EBU BPN 027-1 "Transport Protocol Experts Group(TPEG) Specifications, Part 1 : Introduction, Numbering and Versions TPEG-INV/002", Oct. 2002.
  6. EBU BPN 027-2 "Transport Protocol Experts Group (TPEG) Specifications, Part 2 : Syntax, Semantics and Framing Structure TPEG-SSF_ 3.0/002", Oct. 2002.
  7. EBU BPN 027-3 "Transport Protocol Experts Group (TPEG) Specifications, Part 3 : Service and Network Information Application TPEGSNI_ 3.0/002", Oct. 2002.
  8. EBU BPN 027-4 "Transport Protocol Experts Group (TPEG) Specifications, Part 4 : Road Traffic Message Application TPEG-RTM_3.0/ 003", Oct. 2002.
  9. EBU BPN 027-5 "Transport Protocol Experts Group (TPEG) Specifications, Part 5 : Public Transport Information Application TPEG-PTI_ 3.0/001", Oct. 2002.
  10. EBU BPN 027-6 "Transport Protocol Experts Group (TPEG) Specifications, Part 6 : Location Referencing for Application TPEG-Loc_3.0/ 001", Oct. 2002.
  11. J. S. Evans and D. Everitt, "On the teletraffic capacity of CDMA cellular networks," IEEE Trans. Veh. Technol., Vol. 48, pp. 153-165, Jan. 1999. https://doi.org/10.1109/25.740079