Optimal Time Slot and Channel Allocation for CDMA/TDD Systems with Unbalanced Multimedia Traffic

불균형 멀티미디어 트래픽을 갖는 CDMA/TDD 이동통신시스템을 위한 최적 타임슬롯/채널 운용체계

  • 장근녕 (신라대학교 경영학부) ;
  • 김동우 (한양대학교 전자컴퓨터공학부)
  • Published : 2001.12.01

Abstract

Traffic unbalance between uplink and downlink is one of the most notable characteristics in the next generation cellular mobile systems which provide multimedia services such as voice and video telephony, high-speed internet access, and mobile computing, etc. The CDMA/TDD system with unbalanced slot allocation between two links is a good solution for the traffic unbalance in this paper, we formulate the time slot and channel allocation problem for the CDMA/TDD systems in general multicell environments, which is to maximize the system capacity under the given traffic unbalance, and solve that problem by simulated annealing technique. Computational experiments show that the proposed scheme yields a good performance.

Keywords

References

  1. Personal station-basestation compatibility requirements for 1.8 to 2.0 GHz code division multiple access(CDMA) personal communications systems
  2. Mobile station-base station compatibility standard for dual-mode wideband spread spectrum cellular system
  3. Proc. IEEE VTC Power control in packet switched time division duplex direct sequence spread spectrum communications Esmailzadeh, R.;M. Nakagawa;A. Kajiwara
  4. IEEE Personal Commun. v.4 Time-division duplex CDMA communications Esmailzadeh, R.;M. Nakagawa;E.A. Sourour
  5. Enumerative Approaches to Combinatorial Optimization-Part Ⅰ Ibaraki, T.
  6. IEEE J. Select. Areas Commun. v.17 no.5 CDMA TDD system for wireless multimedia services with traffic unbalance between uplink and downlink Jeong, D.G.;W.S. Jeon
  7. IEEE Trans. on Vehic. Technol. v.49 no.4 Capacity unbalance between uplink and downlink in spectrally overlaid narrowband and wideband CDMA mobile systems Kim, D.;D.G. Jeong
  8. Proc. IEEE VTC CDMA/TDD cellular systems for 3rd generation mobile communication Miya, K.;M. Watanabe;M. Hayashi;T. Kitade;O. Kata;O. Homma
  9. Integer and Combinatorial Optimization Nemhauser, G.L.;L.A. Wolsey
  10. IEEE Trans. on Vehic. Technol. v.47 UMTS: Development of standards for the third generation Samukic, A.
  11. IEEE Personal Commun. v.2 no.3 Network management and control issues in multimedia wireless networks Schwartz, M.