Interference Priority: A New Scheme for Prioritized Resource Allocation in Wireless

  • Lozano, Angel (Universitat Pompeu Fabra) ;
  • Biglieri, Ezio (Universitat Pompeu Fabra and King Saud University) ;
  • Alrajeh, Nabil (Biomedical Technology Department, College of Applied Medical Sciences, King Saud University)
  • Received : 2011.11.08
  • Accepted : 2012.06.22
  • Published : 2012.10.31

Abstract

A standard paradigm for the allocation of wireless resources in communication demands symmetry, that is, all users are assumed to be on equal footing and hence get equal shares of the system's communication capabilities. However, there are situations in which "prime users" should be given priority, as for example in the transmission of emergency messages. We examine prioritization policies that could be implemented at the physical layer and propose a new one, termed interference priority (IP), which is shown to have excellent performance. We evaluate the performance of these prioritization techniques both in controlled settings and within the context of a full cellular system and discuss the impact of prioritized use of resources on the unprioritized users.

Keywords

References

  1. H. Alemdar and C. Ersoy, "Wireless sensor networks for healthcare: A survey," Comput. Netw., vol. 54, no. 15, pp. 2688-2710, Oct. 2010. https://doi.org/10.1016/j.comnet.2010.05.003
  2. N. Alrajeh, E. Biglieri, B. Bounabat, and A. Lozano, "A smartphone-based healthcare monitoring system-PHY challenges and behavioral aspects," in Proc. MOBIHEALTH, Kos Island, Greece, Oct. 5-7, 2011.
  3. U. Varshney, "Pervasive healthcare and wireless health monitoring," Mobile Netw. Appl., vol. 12, pp. 113-127, 2007. https://doi.org/10.1007/s11036-007-0017-1
  4. E. Biglieri, A. Lozano, and N. Alrajeh, "Prioritized resource allocation in wireless spectrum pooling," submitted for publication.
  5. E. Telatar, "Capacity of multi-antenna Gaussian channels," Eur. Trans. Telecomm., vol. 10, pp. 585-595, Nov. 1999. https://doi.org/10.1002/ett.4460100604
  6. M. K. Karakayali, G. J. Foschini, and R. A. Valenzuela, "Network coordination for spectrally efficient communications in cellular systems," IEEE Wireless Commun., vol. 13, no. 4, pp. 56-61, 2006. https://doi.org/10.1109/MWC.2006.1678166
  7. G. Bresler, D. Cartwright, and D. Tse, "Feasibility of interference alignment for the MIMO interference channel: The symmetric square case," in Proc. ITW, 2011, pp. 447-451.
  8. V. R. Cadambe and S. A. Jafar, "Interference alignment and degrees of freedom of the K-user interference channel," IEEE Trans. Inf. Theory, vol. 54, no. 8, pp. 3425-3441, Aug. 2008. https://doi.org/10.1109/TIT.2008.926344
  9. M. Maddah-Ali, A. Mohatari, and A. Khandani, "Communication over MIMO X channels: Interference alignment, decomposition, and performance analysis," IEEE Trans. Inf. Theory, vol. 54, no. 8, pp. 3457-3470, Aug. 2008. https://doi.org/10.1109/TIT.2008.926460
  10. M. Razaviyayn, G. Lyubeznik, and Z. Q. Luo, "On the degrees of freedom achievable through interference alignment in a MIMO interference channel," Arxiv preprint, arXiv:1104.0992, 2011.
  11. G. Caire, S. A. Ramprashad, and H. C. Papadopoulos, "Rethinking network MIMO: Cost of CSIT, performance analysis, and architecture comparisons," in Proc. ITA, La Jolla, CA, 2010, pp. 1-10.
  12. S. Venkatesan, A. Lozano, and R. Valenzuela, "Network MIMO: Overcoming intercell interference in indoor wireless systems," in Proc. Asilomar Conf. Signals, Systems, Comp., 2007, pp. 83-87.
  13. K. Gomadam, V. R. Cadambe, and S. A. Jafar, "A distributed numerical approach to interference alignment and applications to wireless interference networks," IEEE Trans. Inf. Theory, vol. 57, no. 6, pp. 3309-3322, June 2011. https://doi.org/10.1109/TIT.2011.2142270
  14. F. Rashidi-Farrokhi, G. J. Foschini, A. Lozano, and R. A. Valenzuela, "Link-optimal space-time processing with multiple transmit and receive antennas," IEEE Commun. Lett., vol. 5, no. 3, pp. 85-87, Mar. 2001. https://doi.org/10.1109/4234.913148
  15. A. Lozano, A. M. Tulino, and S. Verdú, "High-SNR power offset in multiantenna communication," IEEE Trans. Inf. Theory, vol. 51, no. 12, pp. 4134-4151, Dec. 2005. https://doi.org/10.1109/TIT.2005.858937
  16. H. Shin and J. H. Lee, "Capacity of multiple-antenna fading channels: Spatial fading correlation, double scattering, and keyhole," IEEE Trans. Inf. Theory, vol. 49, no. 10, pp. 2626-2647, Oct. 2003.
  17. A. Gosh, J. Zhang, J. G. Andrews, and R. Muhamed, Fundamentals of LTE. Prentice-Hall, 2010.
  18. A. Lozano, R. W. Heath Jr., and J. G. Andrews, "On the limitations of cooperation in wireless networks," in Proc. ITA, La Jolla, CA, Feb. 2011.
  19. S. W. Peters and R. W. Heath, Jr., "Interference alignment via alternating minimization," in Proc. IEEE ICASSP, Taipei, R.O.C., Apr. 19-24, 2009, pp. 2445-2448.