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IEEE 802.16e 기반무선 인터넷서비스 망에서의 고속 핸드오버 방안에 관한 연구

A Study on Fast Handover Scheme in the Wireless Internet Service Network Based on IEEE 802.16e

  • 발행 : 2007.10.31

초록

IEEE 802.16e는 여러 가지 면에서 개선의 여지를 남기고 있으며 그중 특히 고속 핸드오버는 사용자가 고속으로 이동하는 환경에서는 필수적인 요소이다. 이 논문에서는 핸드오버 후보 기지국을 활용하는 고속 핸드오버 방식을 제안하였다. 제안된 방식은 IEEE 802.16e에 기반을 두고 있지 만 모의실험을 통한 성능 분석 결과에 의하면 핸드오버 지연을 기존 방식 대비 30%이상 감소시키며 핸드오버 탈락 확률 또한 5% 이상 향상시키는 성능개선 결과를 나타내었다.

IEEE 802.16e has many points to be improved. Among them, fast handover is essential when user moves in high speed. In this paper we proposed a fast handover scheme using handover candidate BS set. This scheme is based on IEEE 802.16e, however according to the performance evaluation results through simulation; our proposed scheme shows more than 30% of handover delay reduction and at least 5% of handover drop probability improvement.

키워드

참고문헌

  1. 802.16E-2005 IEEE Standard for Local and metropolitan area networks Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands, http://grouper.ieee.org/groups/802/16/pubs/80216e.html
  2. 802.16-2004 IEEE Standard for Local and metropolitan area networks Part 16: Air Interface for Fixed Broadband Wireless Access Systems, http://grouper.ieee.org groups/802/16-pubs/80216-2004.html
  3. TTAS.KO-06.0082/Rl : Specifications for 2.3 GHz band Portable Internet Service (PHY & MAC Layer), http://www.wibro.or.kr/standards.htm
  4. WiMAX Forum Mobile System Profile, Release 1.0 Approved Specification (Revision 1.2.2: 2006-11-17), http://www.wimaxforum.org/techn-ology/documents/
  5. Sik Choi, Gyung-Ho Hwang, Taesoo Kwon, Ae-Ri Lim and Dong-Ho Cho, 'Fast handover scheme for real-time downlink services in IEEE 802.16e BWA system,' Vehicular Technology Conference, 2005, vol. 3, pp. 2028-2032
  6. Doo Hwan Lee, Kyamakya, K. and Umondi. J.P, 'Fast handover algorithm for IEEE 802.16e broadband wireless access system,' Wireless Pervasive Computing, 2006, pp. 6 pp
  7. RECOMMENDATION ITU-R M.1225, Guide-lines for Evaluations of Radio Transmission Technologies for IMT-2000