| Adaptive Power Control Dynamic Range Algorithm in WCDMA Downlink Systems |
|
Soo sung Jung;Hyung won Park;Jae sung Lim |
| WCDMA 하향 링크 시스템에서의 적응적 PCDR 알고리즘 |
|
정수성;박형원;임재성 |
|
|
|
|
| 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. |
| Key Words:
WCDMA, Power Control, Power Control Dynamic Range, Resource Management |
|
PDF Links
Full text via DOI
Download Citation
