The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
권호 표지

Sliced Channel Allocation Method for Multirate Communtiaction Environments using DAMA Scheduler

Multirate 통신환경에서 DAMA 스케줄러를 이용한 슬라이스 채널 할당방법

  • Yu, Byung-Kwan (Dept.of Computer and Communication Engineering, Chungbuk National University) ;
  • Kim, Hae-Ki (Dept.of Computer and Communication Engineering, Chungbuk National University) ;
  • An, Chy-Hun (Dept.of Computer and Communication Engineering, Chungbuk National University) ;
  • Kim, Nam (Dept.of Computer and Communication Engineering, Chungbuk National University) ;
  • Kim, Soo-Hyung (Dept.of Computer and Communication Engineering, Chungbuk National University)
  • 유병관 (충북대학교 정보통신학과) ;
  • 김해기 (충북대학교 정보통신학과) ;
  • 안치훈 (충북대학교 정보통신학과) ;
  • 김남 (충북대학교 정보통신학과) ;
  • 김수형 (충북대학교 정보통신학과)
  • Published : 1999.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper the new channel allocation method which is important in designing mobile radio system, is proposed. If the channel is allocated by time-frequency-code sliced and using DAMA scheduler, the blocking probability is lower than TA channel allocation method. With traffic load $\rho$=0.8 and 2% of blocking probability, TFS method can allocate 36 slices compared to 11 slices in TA method. At traffic load $\rho$=0.9 and 1% of blocking probability, the maximum available slices are 13 in TA method, but in TFS method 40 slices are allocated to user, so TFS method is better frequency availability by 3.75 times than TA method. TFS method could be suitable for system planning to multirate communication users.

본 논문에서는 이동 무선 시스템 설계시 중요한 채널 할당에 대한 TFS(Time-Frequency Slice)할당 방법 을 제시하였다. 시간-주파수-코드영역을 슬라이스화 하고 요구할당 다중접속(DAMA) 스케줄러를 이용하여 채널을 할당하는 경우 TA (Traditional Assignment) 방식에 비해서 호 차단 확률을 낮추게 된다. 통화량 부 하 $\rho$=0.8이고 요구되는 호 차단 확률이 2%일 때 TA (Traditional Assignment)방식에서는 사용자들에게 11 개의 슬라이스를 할당할 수 있지만. TFS방식에서는 36개의 슬라이스를 할당할 수 있다. 통화량 부하 $\rho$=0.9 일 때 TA방식에서 1%의 호 차단 확률을 기준으로 13개 이상의 슬라이스를 할당할 수 없지만, TFS(TimeF Frequency-Code sliced)방식에서는 40개의 슬라이스를 할당함으로써 TA방식보다 3.07배 향상되었다. 이러한 T TFS방식은 다중속도 사용자들이 많은 시스템구현에 적합한 방법이다.

Keywords

References

  1. Digital communications fundamentals and applications B. Sklar
  2. IEICE Trans. Comm. v.F79 B no.3 Distributed dynamic channel allocation for the evolution of TDMA cellular systems K. Hamabe;Y. Furuya
  3. IEEE Proceedings of the Globecom'95 v.3 On the erlang capacity of CDMA cellular systems J. S. Lee;L. E. Miller
  4. Mobile Cellular Telecommunications W. C. Lee
  5. ICC'95 Conf. Rec. Distributed-queueing request update multiple access(DQRUMA) for wireless packet(ATM) network M. J. Karol;Z. Liu;K. Y. Eng
  6. IEEE Comm. Mag. v.28 Multicarrier modulation for data transmission: An idea whose time has come J. A. C. Bingham
  7. The Mobile Communications Handbook J. D. Gibson
  8. IEE Colloquium on Spread Spectrum Techniques for Radio Communication Systems Digest Multirate spread spectrum direct sequence CDMA techniques H. Azad;A. F. Aghvami
  9. ICC'95 Conf. Rec. Multi-code CDMA wireless personal communications network C. L. I.;R. D. Gitlin
  10. Probability, random variables. and random signal principles Peyton, Z.; Peebles, JR.
  11. IRE Trans. Comm. Syst. v.CS-8 The sum of log-normal probability distribution in scattered transmission systems L. F. Fenton
  12. IEEE Journal on Selected Areas in Comm. v.11 no.6 erlang capacity of a power controlled CDMA system A. M. Viterbi;A. J. Viterbi
  13. Proceedings of the 1996 IEEE International Conference on Comm. v.3 The effect of fading on the erlang capacity of the IS-95 CDMA cellular system Q. Shen;W. A. Krzymien
  14. IEEE Veh. Tech. Proceedings of the VTC'97 v.1 A TDMA-CDMA cellular system F. Hendessi(et al.)
  15. 셀룰라 이동통신 공학 강창언;강민구;김남;조형래
  16. IEEE Trans. Veh. Tech. v.44 no.1 Capacity, throughput, and delay analysis of a cellular DS CDMA system with imperfect power control and imperfect sectorization M. G. Jansen;R. Prasad