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

  • 제40권2호
  • /
  • Pages.298-306
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  • 2015
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  • 1226-4717(pISSN)
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  • 2287-3880(eISSN)
한국통신학회 (The Korean Institute of Commucations and Information Sciences)
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위성/지상 겸용 망 내 간섭을 고려한 최적 자원 할당 방식

An Efficient Resource Allocation Scheme For An Integrated Satellite/Terrestrial Networks

  • Park, Unhee (Electronics and Telecommunications Research Institute (ETRI), Satellite Handled Broadcasting communications Research Team) ;
  • Kim, Hee Wook (Electronics and Telecommunications Research Institute (ETRI), Satellite Handled Broadcasting communications Research Team) ;
  • Oh, Dae-Sub (Electronics and Telecommunications Research Institute (ETRI), Satellite Handled Broadcasting communications Research Team) ;
  • Jang, Dae-Ik (Electronics and Telecommunications Research Institute (ETRI), Satellite Handled Broadcasting communications Research Team)
  • 투고 : 2014.09.30
  • 심사 : 2015.02.06
  • 발행 : 2015.02.28
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초록

본 논문에서는 위성/지상 겸용 망에서 위성 망과 지상 망간 주파수를 효율적으로 공유할 수 있도록 기여하는 최적의 자원 할당 방식에 대한 성능을 비교 분석한다. 제안된 방식은 동일한 주파수를 사용하는 위성 빔과 인접 빔 내 지상 셀 시스템 간 발생할 수 있는 간섭을 경감시킴과 동시에 망 내 발생한 트래픽 요구량을 만족시키기 위해 필요한 전력을 최적화하여 주파수 자원 이용 효율을 향상시킬 수 있다. 이와 같은 겸용 망에서는 각 시스템 간 상이한 트래픽 환경 및 업/하향링크 환경에 따라 주파수를 공유하는 위성과 지상 시스템 간 간섭 환경이 달라질 수 있다. 따라서 본 논문에서는 위성/지상 겸용 망에서의 업/하향링크 환경을 가정한 성능을 비교 분석함으로써 보다 실제 통신 환경에서의 제안된 알고리즘에 대한 성능의 우수성을 보인다.

In this paper, we propose an efficient resource allocation scheme for the integrated satellite/terrestrial networks. The proposed scheme is a frequency sharing technique to mitigate the inter-component interferences which can be generated between a satellite beam and terrestrial cells that are operated in the same frequency. The proposed dynamic resource allocation scheme can mitigate the total inter-component interference by optimizing the total transmission power and it can expect a result of which can lead to an increase in capacity. In such a system, the interference situation can be affected by the distributed traffic demands or up/down link communications environments. In this point of view, we evaluate the performance of the total consumed power, the amount of inter-component interference with respect to different traffic distributions and interference environments between the satellite beam and terrestrial systems.

키워드

참고문헌

  1. B. Evans, et al., "Integration of satellite and terrestrial systems in future multimedia communications," IEEE Wirel. Commun., vol. 12, no. 5, pp. 72-80, Oct. 2005. https://doi.org/10.1109/MWC.2005.1522108
  2. P. Febvre, "Personal satellite access terminals: Observations with a 40-year perspective," PSATS 2011 Keynote 1, Malaga, Spain, Feb. 2011.
  3. AWG15/TMP-13, Working document towards a draft new APT Report on APT frequency usage of the bands 1980-2010 MHz and 2170-2200 MHz in Asia Pacific Region.
  4. H. W. Kim, K. Kang, and D. I. Chang, "Technical trends on utilization of satellite 2.1 GHz frequency," Electron. Telecommun. Trends, 2014.
  5. U. Park, H. W. Kim, D. S. Oh, and B. J. Ku, "Interference-limited dynamic resource management for an integrated satelliteterrestrial system," ETRI J., vol. 36, no. 4, pp. 519-527, Aug. 2014. https://doi.org/10.4218/etrij.14.0113.0079
  6. U. Park, H. W. Kim, D. S. Oh, and D. I. Chang, "A concept on the dynamic resource management for an integrated satelliteterrestrial network to limit interferences," in Proc. KICS Int. Conf. Commun. 2014, pp. 1110-1111, Jeju Island, Korea, Jun. 2014.
  7. J. Kim, J. Kim, S. Lee, J. Lee, K. Kim, K. Song, and J. M. Ahn, "A study on the interference between global navigation satellite systems," J. KICS, vol. 37, no. 6, pp. 512-519, Jun. 2012.
  8. S. Woo, H.-W. Park, H.-S. Lee, Y.-S. Yoo, and B.-G. Jung, "A power control-based MF-TDMA resource allocation scheme for next generation military satellite communication systems," J. KICS, vol. 37, no. 11, pp. 1138-1149, Nov. 2012.
  9. N. Jeong, D. S. Oh, and B. J. Ku, "A study on the radio-interference assessment from mobile communication systems to radionavigation satellite systems in adjacent 1.6 GHz band," in Proc. KICS Int. Conf. Commun. 2013, pp. 255-256, Jeju Island, Korea, Jun. 2013.
  10. H. W. Kim, K. Kang, B.-J. Ku, and H.-J. Lee, "Recent R&D activities for integrated satellite/terrestrial communication in satellite 2 GHz bands," in Proc. JC-SAT2014 Conf., Fukuoka, Japan, Oct. 2013.
  11. International Telecommunication Union, Report ITU-R M.2041, Sharing and adjacent band compatibility in the 2.5 GHz band between the terrestrial and satellite components of IMT 2000, 2003.
  12. K. Nakahira, K. Kobayashi, and M. Ueba, "Capacity and quality enhancement using an adaptive resource allocation for multi-beam mobile satellite communication systems," in Proc. Wirel. Commun. Netw. Conf., vol. 1, pp. 153-158, Las Vegas, US, Apr. 2006.
  13. S. Boyd and L. Vandenberghe, Convex Optimization, Cambridge University Press, 2004.