WiBro Evolution 표준화 및 기술 동향

  • 발행 : 2007.06.20

초록

본 고에서는 WiBro Evolution에 대하여 개관한다. WiBro Evolution은 현재 전 세계적으로 상용화되고 있는 WiBro 시스템의 진화형태로, 향후 더욱 다양해질 사용자 및 서비스 제공자의 요구사항을 반영한 4세대 통신시스템을 목표로 한다. 이를 위해 WiBro Evolution시스템은 기존 WiBro시스템과의 호환성이 유지되어야 하며, ITU에서 4세대 통신시스템 표준으로 추진중인 IMT-advanced의 요구사항을 만족시킬 수 있어야 한다. 이러한 표준개발 과정에서 WiBro Evolution의 기술적 목표를 달성할 수 있도록 다양한 기술들이 반영될 예정이다. 이러한 기술들로 전송기술, MIMO기술, 셀 경계성능 향상 기술, Self configuration 기지국 기술, 수직 핸드오버 기술 등이 고려되고 있다.

키워드

참고문헌

  1. ITU-R Recommendation M. 1645: Framework and overall objectives of the future development of IMT-2000 and systems beyond IMT-2000
  2. Board Of NGMN Limited: Next Generation Mobile Networks Beyond HSPA & EVDO White Paper, Ver.3.0, Dec. 2006
  3. http://standards. ieee.org/board/nes/projects/802-16m.pdf
  4. IEEE C802.16m-07/111rl, 'TGm Legacy Support Ad Hoc output,' IEEE802.16 TGm, May 9,2007
  5. Suk Yu Hui and Kai Hau Yeung, 'Challenges in the Migration to 4G Mobile Systems,' IEEE Commun. Mag..vol. 41, no. 12,2003, pp. 54-59
  6. McNair, J., Fang Zhu, 'Vertical handoffs in fourth-generation multinetwork environments,' IEEE Wireless Commun., vol. 11, no. 3, 2004, pp. 8-15
  7. IEEE 802.16m-07/001, 'Initial Work Plan for IEEE P802,16m Draft & IMT-Advanced Submission', IEEE 802.16 TGm, Jan 16, 2007
  8. IEEE 802.11-07_0419rl, 'Very High Throughput Study Group: IEEE 802.11, Mar. 2007.
  9. IEEE 802.16m-07/002rl, 'Draft IEEE 802.16m Requirements,' IEEE 802.16 TGm, Mar 15,2007
  10. IEEE Std $802.16e^{TM}$-2005 and IEEE Std $802.16e^{TM}$-2004/Corl-2005, IEEE Standard for Local and metropolitan area networks Part 16: Air Interface for Fixed and Mobile Broadband Wireless Access Systems, Feb. 2006
  11. G.J. Foschini, 'Layered Space-time Architecture for Wireless Communication in a Fading Environment when Using Multi-element Antennas,' Bell Labs Technical Journal, Oct. 1996, pp
  12. I. E. Telatar, 'Capacity of Multi-Antenna Gaussian Channels,' Euro. Trams. Telecommun., vol. 10, Nov.1999, pp. 585-95 https://doi.org/10.1002/ett.4460100604
  13. S. Alamouti, 'A simple transmitter diversity scheme for wireless communications,' IEEE J. Select. Areas Commun., vol. 16, Oct. 1998, pp. 1451-1458 https://doi.org/10.1109/49.730453
  14. Lal C. Godara, 'Application of antenna arrays to mobile communications. II. Beam-forming and direction-of-arriva1 considerations,' Proc. IEEE, Vo1.85, No.8, Aug. 1997, pp. 1195-1245
  15. Q.H. Spencer, A.L. Swindlehurst, and M. Haardt, 'Zero-Forcing Methods for Downlink Spatial Multiplexing in Multi-User MIMO Channels,' IEEE Trans, Sig. Proc., Vo1.52, Feb. 2004
  16. M. Costa, 'Writing on Dirty Paper,' IEEE Trans. Inform. Theory, Vol.29, No.3,Jan. 2001, pp.211-219
  17. David J. Love, Robert W. Heath Jr., Wiroonsak Santipach, Michael L. Honig, 'What Is the Value of Limited Feedback for MIMO Channels?,' IEEE Commun. Mag., vol. 42, no. 10, 2004, pp. 54-59 https://doi.org/10.1109/MCOM.2004.1341261
  18. 3GPP TSG RAN1-W1(R1-070459), 'Further Discussion on Adaptive Fractional Frequency Reuse,' Sorento, Italy, 15-19 Jan, 2007
  19. 3GPP TSG RAN1-W1(R1-050896), 'Description and simulation of interference management technique for OFDMA based E-UTRA downlink evaluation,' Landon, UK, 2 Sep, 2005
  20. US2005/0169229 Al, 'Apparatus and Method for Allocating Subchannels Adaptively According to Frequency Reuse Rates in an OFDMA System,' 4 Oct, 2005
  21. 이종식, '옥내용 WiBro 시스템 기술 개발,' JCCI 학술대회자료집, 2007년 5월, pp. 141-155
  22. Vicki Griffiths, 'WCDMA Femtocells,' Open Basestation Conference, Bath, April, 2007
  23. Stuart Carlaw, 'What is the Business Case for Femtocells,' Open Basestation Conference, Bath, April, 2007
  24. Akyildiz, I.F., et. al, 'Mobility management in next-generation wireless systems,' Proc. IEEE, vol. 87, no. 8, 1999, pp. 1347-84