KR100921891B1 - 무선 통신 시스템에서 전력 제어를 위한 방법 및 장치 - Google Patents
무선 통신 시스템에서 전력 제어를 위한 방법 및 장치 Download PDFInfo
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- KR100921891B1 KR100921891B1 KR1020037010606A KR20037010606A KR100921891B1 KR 100921891 B1 KR100921891 B1 KR 100921891B1 KR 1020037010606 A KR1020037010606 A KR 1020037010606A KR 20037010606 A KR20037010606 A KR 20037010606A KR 100921891 B1 KR100921891 B1 KR 100921891B1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/06—TPC algorithms
- H04W52/08—Closed loop power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/06—TPC algorithms
- H04W52/14—Separate analysis of uplink or downlink
- H04W52/143—Downlink power control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
- H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/26—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service]
- H04W52/267—TPC being performed according to specific parameters using transmission rate or quality of service QoS [Quality of Service] taking into account the information rate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/30—Transmission power control [TPC] using constraints in the total amount of available transmission power
- H04W52/32—TPC of broadcast or control channels
- H04W52/325—Power control of control or pilot channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/38—TPC being performed in particular situations
- H04W52/50—TPC being performed in particular situations at the moment of starting communication in a multiple access environment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
- H04W52/56—Detection of errors of TPC bits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/18—TPC being performed according to specific parameters
- H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/04—Transmission power control [TPC]
- H04W52/54—Signalisation aspects of the TPC commands, e.g. frame structure
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- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
Description
WO 00/36762A는 기지국들로부터 전력 제어 명령들을 평가하기 위한 통상의 규칙을 사용하지 않는 셀룰러 CDMA 시스템(소프트 핸드오프 상황일 때와 같음)에서 몇몇 기지국과 통신하는 이동국들과 관련된다. 이동국들은 기지국으로부터 링크의 링크 품질을 평가한다. 만일 소정의 기지국이 미리 결정된 임계치를 넘는 링크 품질을 나타내고, 그 기지국이 전력 감소를 요구한다면, 전력은 미리 결정된 양(델타)만큼 감소된다. 그렇지 않으면, 전력은 각각의 기지국으로부터의 링크의 신호 품질로부터 결정된 가중치와 관련하여 각각의 기지국으로부터 수신된 전력 제어 신호들에 따라 델타보다 작거나 동일한 양만큼 상향 또는 하향 조절된다.
또한 WO 99/53630은 적어도 하나의 기지국 및 적어도 하나의 원격국을 포함하는 통신 시스템에서 기지국으로부터 원격국으로 송신된 제1 신호와 제2 신호 사이에서 출력 전력 오프셋을 조절하는 방법과 관련된다. 제1 신호는 원격국으로부터 기지국으로 송신된 신호들의 전력을 제어하기 위한 전력 제어 명령일 수 있으며, 제2 신호는 다운링크 정보일 수도 있다. 원격국이 매크로다이버시티 상태에 있는지, 즉 둘 이상의 기지국으로부터 동시에 동일한 신호를 실질적으로 수신하는지에 대한 결정이 행해지며, 제1 신호와 제2 신호 사이의 출력 전력 오프셋은 이러한 결정에 기초하여 조절된다. 출력 전력 오프셋은 원격국이 매크로다이버시티 상태에 있으면 제1 레벨로, 그리고 원격국이 매크로다이버시티 상태에 있지 않으면 제2 레벨로 설정될 수도 있다. 택일적으로, 원격국이 매크로다이버시티든 아니든, 출력 전력 오프셋은 미리 결정된 신호의 특성으로부터 계산된 필요한 품질에 기초하여 조절될 수도 있다.
여기서 설명된 실시예들은 공통 채널 상에서 수신된 제 1 전력 제어 명령에 응답하여 링크 품질 추정치를 생성하도록 동작하는 링크 품질 추정 유닛, 링크 품질 추정 유닛에 접속되며 링크 품질 추정치에 응답하여 제 2 전력 제어 명령을 생성하도록 동작하는 전력 제어 유닛을 포함하는 원격국 장치에 의해 상기한 문제점을 해결한다.
Claims (11)
- 원격국 장치(200)로서,공통 채널 상에서 수신된 제 1 전력 제어 명령에 응답하여 링크 품질 추정치를 생성하도록 동작하는 링크 품질 추정 유닛(204); 및상기 링크 품질 추정 유닛(204)에 접속되며, 상기 링크 품질 추정치에 응답하여 제 2 전력 제어 명령을 생성하도록 동작하는 전력 제어 유닛(210)을 포함하며, 상기 제 2 전력 제어 명령은 기지국에서 상기 공통 채널의 전송 전력을 조절하는데 사용되는,원격국 장치.
- 제 1 항에 있어서,상기 원격국 장치(200)는 상기 제 1 전력 제어 명령에 응답하여 전송 전력을 제어하는 것을 특징으로 하는 원격국 장치.
- 제 1 항에 있어서,상기 원격국 장치(200)는 상기 제 2 전력 제어 명령을 전송하는 것을 특징으로 하는 원격국 장치.
- 무선 통신 장치(300)로서,공통 채널 상에서 전송된 전력 제어 명령에 응답하는 링크 품질 추정치에 기초한, 상기 공통 채널 상에서 기지국 전송에 대한, 원격국으로부터 수신된 전력 제어 명령을 결정하도록 동작하는 결정 유닛(308); 및상기 결정 유닛(308)에 결합되며, 상기 결정된 전력 제어 명령에 따라 상기 공통 채널의 전송 전력을 조절하도록 동작하는 조절 유닛(312)을 포함하는,무선 통신 장치.
- 제4항에 있어서,공통 채널 상에서 전력 제어 명령들의 전송 전력 제어를 위한 제어 프로세서(310)를 더 포함하며, 상기 전력 제어 명령의 전송 전력 레벨은 기준 값으로 초기 설정되며, 상기 조절 유닛은 증폭기(312)인 것을 특징으로 하는 무선 통신 장치.
- 제 4 항에 있어서,공통 채널 상에서 역방향 링크 전력 제어 명령들을 전송하도록 동작하는 제 1 전력 제어 유닛(310); 및역방향 링크 상에서 수신된 순방향 링크 전력 제어 명령들에 응답하여 상기 역방향 링크 전력 제어 명령들의 전송 전력을 조절하도록 동작하는 제 2 전력 제어 유닛(308)을 더 포함하는,무선 통신 장치.
- 삭제
- 무선 통신 방법으로서,공통 채널 상에서 기지국 전송에 대한, 원격국으로부터 수신된 전력 제어 정보를 결정하는 단계; 및상기 공통 채널의 전송 전력을 조절하는 단계를 포함하며,상기 원격국으로부터 수신된 전력 제어 정보는 상기 기지국으로부터 공통 채널 상에서 수신된 전력 제어 명령의 링크 품질 추정치에 기초하여 생성되는,무선 통신 방법.
- 제 4 항에 있어서,상기 전력 제어 명령의 전송 전력 레벨은 기준 값으로 초기 설정되는 것을 특징으로 하는 무선 통신 장치.
- 제 1 항에 있어서,상기 링크 품질 추정치는 SNR인 것을 특징으로 하는 원격국 장치.
- 제4항에 있어서,상기 장치(300)는 기지국인 것을 특징으로 하는 무선 통신 장치.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/782,751 US8605686B2 (en) | 2001-02-12 | 2001-02-12 | Method and apparatus for power control in a wireless communication system |
US09/782,751 | 2001-02-12 | ||
PCT/US2002/003729 WO2002065663A2 (en) | 2001-02-12 | 2002-02-06 | Method and apparatus for power control in a wireless communication system |
Related Child Applications (1)
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KR1020087021288A Division KR100950416B1 (ko) | 2001-02-12 | 2002-02-06 | 무선 통신 시스템에서 전력 제어를 위한 방법 및 장치 |
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KR20030070154A KR20030070154A (ko) | 2003-08-27 |
KR100921891B1 true KR100921891B1 (ko) | 2009-10-13 |
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KR1020087021288A KR100950416B1 (ko) | 2001-02-12 | 2002-02-06 | 무선 통신 시스템에서 전력 제어를 위한 방법 및 장치 |
KR1020037010606A KR100921891B1 (ko) | 2001-02-12 | 2002-02-06 | 무선 통신 시스템에서 전력 제어를 위한 방법 및 장치 |
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KR1020087021288A KR100950416B1 (ko) | 2001-02-12 | 2002-02-06 | 무선 통신 시스템에서 전력 제어를 위한 방법 및 장치 |
Country Status (17)
Country | Link |
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US (2) | US8605686B2 (ko) |
EP (3) | EP1971040B1 (ko) |
JP (2) | JP2005503686A (ko) |
KR (2) | KR100950416B1 (ko) |
CN (2) | CN101494482B (ko) |
AT (3) | ATE453968T1 (ko) |
BR (1) | BRPI0207152B1 (ko) |
CA (1) | CA2437893A1 (ko) |
DE (3) | DE60234968D1 (ko) |
ES (3) | ES2325914T3 (ko) |
HK (3) | HK1075141A1 (ko) |
IL (3) | IL157317A0 (ko) |
MX (1) | MXPA03007139A (ko) |
NO (1) | NO20033542L (ko) |
RU (1) | RU2003127680A (ko) |
TW (1) | TW535445B (ko) |
WO (1) | WO2002065663A2 (ko) |
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