Browse > Article

Adaptive Power Control Dynamic Range Algorithm in WCDMA Downlink Systems  

Jung, Soo-Sung (KTF 수도권 네트워크본부)
Park, Hyung-Won (아주대학교 정보통신전문대학원 정보통신공학과)
Lim, Jae-Sung (아주대학교 정보통신전문대학원)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.29, no.9A, 2004 , pp. 1048-1057 More about this Journal
Abstract
WCDMA system is 3rd generation wireless mobile system specified by 3GPP. In WCDMA downlink, two power control schemes are operated. One is inner loop power control operated m every slot Another is outer loop power control based on one frame time. Base staion (BS) can estimate proper transmission power by these two power control schemes. However, because each MS's transmission power makes a severe effect on BS's performance, BS cannot give excessive transmission power to the speclfic user 3GPP defined Power Control Dynamic Range (PCDR) to guarantee proper BS's performance. In this paper, we propose Adaptive PCDR algorithm. By APCDR algorithm, Radio Network Controller (RNC) can estimate each MS's current state using received signal to interference ratio (SIR) APCDR algorithm changes MS's maximum code channel power based on frame. By proposed scheme, each MS can reduce wireless channel effect and endure outages in cell edge. Therefore, each MS can obtain better QoS. Simulation result indicate that APCDR algorithm show more attractive output than fixed PCDR algorithm.
Keywords
WCDMA; Power Control; Power Control Dynamic Range; Resource Management;
Citations & Related Records
연도 인용수 순위
  • Reference
1 3G TS 25.104 v3.10.0 (2002-03) BS Radio transmission and Reception (FDD) (Release 1999), 3rd Generation Partnership Project: Technical Specification Group Radio Access Networks, Mar. 2002
2 Sampath, A. Kumar, P. Holtzman, On Setting Reverse Link Target SIR in a CDMA System, Proceedings of VTC97, Arizona, 4-7 May 1997
3 3G TS 25.942 v.3.3.0 (2002-06), RF System Scenarios (Release 1999), 3rd Generation Partnership Project: Technical Specification Group Radio Access Networks, Jun. 2002
4 J. Laiho, A. Wacker, T. Novosad, Radio Network Planning and Optimization for UMTS, John Wiley & Sons, Ltd, 2002
5 M.P.J. Baker and TJ. Moulsley, Power Control in UMTS release99, , Mar. 2000
6 3G TS 25.211 v.3.12.0 (2002-09), Physical channels and mapping of transport channels onto physical channels (FDD), 3rd Generation Partnership Project: Technical Specification Group Radio Access Networks, Sep. 2002
7 H. Holma and A. Toskala, WCDMA for UMTS, John Wiley & Jons, 2002
8 Vitervi, CDMA Principles of Spread Spectrum Communication, Addison-Wesley, 1995
9 L. Nuaymi, X. Lagrange, and P. Godlewski, A Power Control Algorighm for 3G WCDMA system, European Wireless 2002
10 유현규, 한상철, 정성순, 홍대식, 강창언, WCDMA 순방향 링크에서의 고속 데이터 전송을 위한 다중 경로 간섭 완화 기법, 한국통신학회 논문지 제28권 12A호, pp958-964, 2003
11 3G TS 25.214 v3.11.0 (2002-09), Physical layer procedures (FDD) (Release 1999), 3rd Generation Partnership Project: Technical Specification Group Radio Access Networks, Sept. 2002