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

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

Mobile Tx Power Prediction-Based Call Admission Control for CDMA System

CDMA 시스템에서 이동국의 송신전력 예측에 기반을 둔 호 수락 방식

  • 최성철 (대천대학 컴퓨터전자전기학부) ;
  • 윤원식 (아주대학교 전자공학부)
  • Published : 2003.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In Code Division Multiple Access (CDMA) system, the cell capacity is defined as the number of available channels in a cell, which is limited by the interferences. When a new call is accepted at its home cell, this adds the interference to the home and its neighboring cells. This paper proposes a call admission control based on mobile transmission power prediction. The home cell has enough capacity to admit new call and if home cell would have admitted a new call, it calculates the mobile transmission power. Also, its neighboring cell can predict the amount of interference using the predicted mobile transmission power. Thus, the new mobile is accepted by its home cell if QoS(Quality Of Service) is guaranteed in its neighboring cells. The simulation result shows that the proposed scheme largely reduces the outage probability in the neighboring cells.

CDMA 시스템에서 셀의 용량은 그 셀에서 사용 가능한 채널의 수로 정의되고, 이는 셀이 받는 간섭의 양에 의해 제한된다. 새로운 이동국이 홈 셀 에서 호가 수락되었을 경우, 이는 홈 또는 인접 셀 에 간섭을 준다 따라서, 본 논문에서는 홈 셀은 새로운 호를 수락할 만큼 용량이 충분하고, 새로운 이동국이 홈 셀에 수락되었을 때 이동국의 송신 전력을 예측 계산한 후, 이를 이용하여 인접 셀들이 받을 간섭의 양을 예측하여 인접 셀 들에서 QoS(Quality of Service)가 보장될 경우 호를 수락하는 이동국의 송신 전력 예측에 기반을 둔 호 수락 방식을 제안한다. 모의 실험 결과 제안한 방식은 인접 셀 에서 기존 호의 회손 확률(outage probability)이 현저히 감소함을 보여 준다.

Keywords

References

  1. IEEE Trans. on Veh Technol. v.48 no.1 Interference-Based Channel Assignment for DS-CDMA Cellular Systems Sungmoon M. Shin;Cheol Hye Cho;Dan Keun Sung
  2. IEEE Trans. on Veh Technol. v.44 no.3 Integrated Power Control and Base Station Assigement Roy D. Yates;Ching Yao Huang
  3. IEEE Trans. on Veh Technol. v.44 no.3 Performance Study of Close-Loop Power Control Algorithm for a Cellular CDMA System Moh Lim Sim;Erry Gunaran;Boon-Hee Soong;Cheong-Boon Soh
  4. IEEE Trans. on Veh Technol. v.49 no.4 Capacity Estimation for an SIR-Based Power-Controlled CDMA System Supporting ON-OFF Traffic Duk Kyung Kim;Dan Keun Sung
  5. IEEE J. Select Area Commun v.12 no.4 SIR-Based Call Admission Control for DS-CDMA Cellular Systems Zhao Liu
  6. Proc. of the Third IEEE Symposium on Computers and Commun Call Admission Control Schemes for DS-CDMA Cellular System Supporting an Integrated Voice/Data Traffic Hwa-Young Um;Soon-Yong Lim
  7. IEEE Trans. on Veh Technol. A Call Admission Control with Thresholds for Multirate Traffic in CDMA Systems Kuenyoung Kim;Youngnam Han
  8. IEEE J. Select Areas Commun v.16 no.6 An Adaptive Bandwidth Reservation Scheme for High-Speed Multimedia Wireless Networks Calos Oliveira;Jaime Bae Kim;Tatsuya Suda
  9. Proc. of the Third IEEE Symposium on Computers and Commun Population-Based Call Admission Control in Wireless Cellular Networks Manyoo Han;Arne A.Nilsson
  10. CDMA System Engineering Training Handbook v.1 Qualcomm
  11. TIA/EIA Interim Standard(IS-95) Mobile Station-Base Station Compatibility Standards for Dual-Mode Wideband Spread Spectrum Cellular Systems
  12. IEEE J. Select Areas Commun v.17 no.7 Dynamic Resource Allocation Schemes During Handoff for Mobile Parameswaran Ramanathan;Krishna M. Sivalingan