Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
권호 표지
DOI QR코드

DOI QR Code

Hybrid Scheduling in Millimeter Wave Full-Duplex Systems

밀리미터파 전 이중 시스템에서의 혼성 스케줄링

  • Mai, Vien V. (Communications and Networking Laboratory, Dankook University) ;
  • Kim, Juyeop (ICT Convergence Research Team, Korea Railroad Research Institute) ;
  • Choi, Sang Won (ICT Convergence Research Team, Korea Railroad Research Institute) ;
  • Shin, Won-Yong (Department of Computer Science and Engineering, Dankook University)
  • Received : 2015.12.01
  • Accepted : 2016.01.04
  • Published : 2016.01.31
Download PDF
⟨ Previous Next ⟩

Abstract

We introduce a hybrid scheduling in a multi-path poor scattering full-duplex (FD) system, which consists of one multi-antenna FD base station and a large number of single-antenna half-duplex mobile stations. Our hybrid scheduling utilizes partial channel state information at the transmitter. In particular, unlike the conventional scheduling method using opportunistic transmission for both uplink and downlink, the proposed scheme combines a random transmit beamforming for downlink and a zero forcing beamforming for uplink. As our main result, via computer simulations, it is shown that the proposed scheme has a superior sum-rate performance than that of the conventional scheduling method beyond a certain signal-to-noise ratio regime.

다중 경로 약한 산란 (poor scattering) 전 이중 (full-duplex) 시스템에서 혼성 스케줄링을 소개한다. 제안하는 시스템은 다중 안테나를 갖는 하나의 전 이중 기지국과 수 많은 단일 안테나 반 이중 (half-duplex) 단말로 구성된다. 혼성 스케줄링은 송신기에서의 부분적 채널 정보만을 활용한다. 특별히, 상향링크 및 하향링크에서 모두 기회적 송신 기술을 사용하는 기존 스케줄링 방법과는 달리, 제안하는 기술은 하향링크에서의 랜덤 송신 빔형성 및 상향링크에서의 간섭 제거 빔형성을 결합하여 사용한다. 주요 결과로써, 컴퓨터 모의실험을 통해 제안한 기술이 기존 스케줄링 방법보다 특정 신호 대 잡음비 영역 이상에서 훨씬 더 우수한 합 용량 성능을 가짐을 보인다.

Keywords

References

  1. E. Aryafar, M. Khojastepour, K. Sundaresan, S. Rangarajan, and M. Chiang, "MIDU: Enabling MIMO full-duplex," in Proceedings of the 18th ACM Annual International Conference on Mobile Computing and Networking (MobiCom2012), Istanbul, Turkey, pp. 257-268, Aug. 2012.
  2. A. Sahai, S. N. Diggavi, and A. Sabharwal, "On degreesof- freedom of full-duplex uplink/downlink channel," in Proceedings of the IEEE Information Theory Workshop (ITW2013), Sevilla, Spain, pp. 1-5, Sep. 2013.
  3. J. Bai and A. Sabharwal, "Distributed full-duplex via wireless side channels: Bounds and protocols," IEEE Transactions on Wireless Communications, vol. 12, no. 8, pp. 4162-4173, Jul. 2013. https://doi.org/10.1109/TWC.2013.071913.122015
  4. M. Sharif and B. Hassibi, "On the capacity of MIMO broadcast channels with partial side information," IEEE Transactions on Information Theory, vol. 51, no. 2, pp. 506-522, Feb. 2005. https://doi.org/10.1109/TIT.2004.840897
  5. A. Tajer and X. Wang, "(n,k)-user interference channels: Degrees of freedom," IEEE Transactions on Information Theory, vol. 58, no. 8, pp. 5338-5353, Aug. 2008. https://doi.org/10.1109/TIT.2012.2201373
  6. B. C. Jung, D. Park, and W.-Y. Shin, "Opportunistic interference mitigation achieves optimal degrees-offreedom in wireless multi-cell uplink networks," IEEE Transactions on Communications, vol. 60, no. 7, pp. 1935-1944, Jul. 2012. https://doi.org/10.1109/TCOMM.2012.051012.110205
  7. A. Tajer and X. Wang, "Multiuser diversity in cognitive networks," IEEE/ACM Transactions on Networking, vol. 18, no. 6, pp. 1766-1779, Dec. 2010. https://doi.org/10.1109/TNET.2010.2048038
  8. C. Karakus and S. Diggavi, "Opportunistic scheduling for full-duplex uplink-downlink networks," preprint. [Online]. Available: http://arxiv.org/abs/1504.05898.
  9. F. Boccardi, R. W. Heath Jr., A. Lozano, T. L. Marzetta, and P. Popovski, "Five disruptive technology directions for 5G," IEEE Communications Magazine, vol. 52, no. 2, pp. 74-80, Feb. 2014.
  10. M. Akdeniz, Y. Liu, M. Samimi, S. Sun, S. Rangan, T. Rappaport, and E. Erkip, "Millimeter wave channel modeling and cellular capacity evaluation," IEEE Journal of Selected Areas on Communications, vol. 32, no. 6, pp. 1164-1179, Jun. 2014. https://doi.org/10.1109/JSAC.2014.2328154
  11. A. G. Burr, "Capacity bounds and estimates for the finite scatterers MIMO wireless channel," IEEE Journal of Selected Areas on Communications, vol. 21, no. 5, pp. 812-818, Jun. 2003. https://doi.org/10.1109/JSAC.2003.810291
  12. J. Yoon, W.-Y. Shin, and H. S. Lee, "Opportunistic interference alignment in poor scattering channels," IEEE Transactions on Vehicular Technology, to appear.