JPH11507196A - 低軌道衛星通信システムのためのパイロット信号の強度制御システム - Google Patents
低軌道衛星通信システムのためのパイロット信号の強度制御システムInfo
- Publication number
- JPH11507196A JPH11507196A JP9535571A JP53557197A JPH11507196A JP H11507196 A JPH11507196 A JP H11507196A JP 9535571 A JP9535571 A JP 9535571A JP 53557197 A JP53557197 A JP 53557197A JP H11507196 A JPH11507196 A JP H11507196A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- shared resource
- subscriber unit
- satellite
- gateway
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18539—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection
- H04B7/18543—Arrangements for managing radio, resources, i.e. for establishing or releasing a connection for adaptation of transmission parameters, e.g. power control
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.共有資源信号を送信するゲートウェイと、衛星トランスポンダと、少なくと も1つのサブスクライバユニットとを有する衛星通信システムにおいて、前記衛 星トランスポンダによって中継される前記共有資源信号の強度を制御するための システムであり、 前記衛星トランスポンダを介してサブスクライバユニットで前記共有資源信号 を受信するための受信手段と、 各サブスクライバユニットで、前記受信した共有資源信号に対する信号強度を 測定するための測定手段と、 各サブスクライバユニットで、前記信号強度の測定値を前記ゲートウェイに送 信するための送信手段と、 前記信号強度の測定値に基づいて、前記衛星トランスポンダによって送信され る前記共有資源信号のパワーを調整するための調整手段と、 を具備するシステム。 2.前記測定手段は前記受信した共有資源信号に対する信号対ノイズ比を測定す るための手段を含む請求の範囲第1項に記載のシステム。 3.前記調整手段は、 所定のしきい値よりも小さい値をもつ前記信号対ノイズ比の測定値を廃棄する ための廃棄手段と、 各サブスクライバユニットに対して、前記信号対ノイズ比に基づいて、前記共 有資源信号の流束密度に対する平均値を算出するための算出手段と、 最大の平均値に関連するサブスクライバユニットを選択するための選択手段と 所定の共有資源信号の流束密度で前記選択されたサブスクライバユニットのア ンテナを照射するために、前記衛星トランスポンダによって中継された前記共有 資源信号のパワーを調整する手段と、 を含む請求の範囲第2項に記載のシステム。 4.共有資源信号を送信するゲートウェイと、前記共有資源信号を中継する衛星 トランスポンダとを有する衛星通信システムにおいて、 前記衛星トランスポンダを介して前記共有資源信号を受信するための受信手段 と、 前記受信した共有資源信号に対する信号の強度を測定するための測定手段と、 前記共有資源信号の強度を制御ずるために、前記信号強度の測定値を前記ゲー トウェイに送信するための送信手段と、 を具備するサブスクライバユニット。 5.前記測定手段は、前記受信した共有資源信号に対する信号対ノイズ比を測定 するための手段を含む請求の範囲第4項に記載のサブスクライバユニット。 6.共有資源信号を送信するゲートウェイと、この共有資源信号を中継するため の衛星トランスポンダと、少なくとも1つのサブスクライバユニットとを有する 衛星通信システムにおいて、 前記衛星トランスポンダによって中継される前記共有資源信号の強度を制御す る方法であって、 (a)各サブスクライバユニットで、前記衛星トランスポンダを介して前記共 有資源信号を受信する工程と、 (b)前記受信した共有資源信号に対する信号強度を測定する工程と、 (c)前記信号強度の測定値を前記ゲートウェイに送信する工程と、 (d)前記信号強度の測定値に基づいて、前記衛星トランスポンダによって中 継された前記共有資源信号のパワーを調整する工程と、 を具備する方法。 7.前記工程(b)は、 (i)前記受信した共有資源信号に対する信号対ノイズ比を測定する工程を含 む請求の範囲第6項に記載の方法。 8.前記工程(d)は、 (i)所定のしきい値よりも小さい値をもつ前記信号対ノイズ比の測定値を廃 棄する工程と、 (ii)各サブスクライバユニットに対して、前記信号対ノイズ比に基づいて 、前記共有資源信号の流束密度に対する平均値を算出する工程と、 (iii)前記最大の平均値に関連する前記サブスクライバユニットを選択す る工程と、 (iv)所定の共有資源信号の流束密度で、前記選択されたサブスクライバユ ニットのアンテナを照射するために、前記衛星トランスポンダによって送信され た前記共有資源信号のパワーを調整する工程と、 を含む請求の範囲第7項に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/627,830 US5835847A (en) | 1996-04-02 | 1996-04-02 | Pilot signal strength control for a low earth orbiting satellite communications system |
US627,830 | 1996-04-02 | ||
PCT/US1997/005442 WO1997037438A1 (en) | 1996-04-02 | 1997-04-01 | Pilot signal strength control for a low earth orbiting satellite communications system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11507196A true JPH11507196A (ja) | 1999-06-22 |
JP3231789B2 JP3231789B2 (ja) | 2001-11-26 |
Family
ID=24516319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53557197A Expired - Fee Related JP3231789B2 (ja) | 1996-04-02 | 1997-04-01 | 低軌道衛星通信システムのためのパイロット信号の強度制御システム |
Country Status (15)
Country | Link |
---|---|
US (1) | US5835847A (ja) |
EP (1) | EP0830752B1 (ja) |
JP (1) | JP3231789B2 (ja) |
KR (1) | KR100522276B1 (ja) |
CN (1) | CN1140066C (ja) |
AT (1) | ATE298151T1 (ja) |
AU (1) | AU713733B2 (ja) |
BR (1) | BR9702189B1 (ja) |
CA (1) | CA2222925C (ja) |
DE (1) | DE69733522T2 (ja) |
HK (1) | HK1010955A1 (ja) |
MX (1) | MX9709332A (ja) |
RU (1) | RU2188506C2 (ja) |
TW (1) | TW355891B (ja) |
WO (1) | WO1997037438A1 (ja) |
Families Citing this family (52)
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RU2195771C2 (ru) * | 1997-03-04 | 2002-12-27 | Квэлкомм Инкорпорейтед | Архитектура многопользовательской системы связи с распределенными передатчиками |
US5946346A (en) * | 1997-10-07 | 1999-08-31 | Motorola, Inc. | Method and system for generating a power control command in a wireless communication system |
US6067324A (en) * | 1998-06-30 | 2000-05-23 | Motorola, Inc. | Method and system for transmitting and demodulating a communications signal using an adaptive antenna array in a wireless communication system |
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US6252915B1 (en) * | 1998-09-09 | 2001-06-26 | Qualcomm Incorporated | System and method for gaining control of individual narrowband channels using a wideband power measurement |
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US9191840B2 (en) | 2005-10-14 | 2015-11-17 | Qualcomm Incorporated | Methods and apparatus for determining, communicating and using information which can be used for interference control |
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-
1996
- 1996-04-02 US US08/627,830 patent/US5835847A/en not_active Expired - Lifetime
-
1997
- 1997-04-01 RU RU98100246/09A patent/RU2188506C2/ru not_active IP Right Cessation
- 1997-04-01 WO PCT/US1997/005442 patent/WO1997037438A1/en active IP Right Grant
- 1997-04-01 DE DE69733522T patent/DE69733522T2/de not_active Expired - Lifetime
- 1997-04-01 EP EP97917810A patent/EP0830752B1/en not_active Expired - Lifetime
- 1997-04-01 CN CNB971906513A patent/CN1140066C/zh not_active Expired - Fee Related
- 1997-04-01 AT AT97917810T patent/ATE298151T1/de not_active IP Right Cessation
- 1997-04-01 MX MX9709332A patent/MX9709332A/es not_active IP Right Cessation
- 1997-04-01 JP JP53557197A patent/JP3231789B2/ja not_active Expired - Fee Related
- 1997-04-01 KR KR1019970708737A patent/KR100522276B1/ko not_active IP Right Cessation
- 1997-04-01 AU AU26044/97A patent/AU713733B2/en not_active Ceased
- 1997-04-01 CA CA002222925A patent/CA2222925C/en not_active Expired - Fee Related
- 1997-04-01 BR BRPI9702189-0A patent/BR9702189B1/pt not_active IP Right Cessation
- 1997-04-24 TW TW086105362A patent/TW355891B/zh not_active IP Right Cessation
-
1998
- 1998-08-19 HK HK98110019A patent/HK1010955A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO1997037438A1 (en) | 1997-10-09 |
US5835847A (en) | 1998-11-10 |
CN1194739A (zh) | 1998-09-30 |
TW355891B (en) | 1999-04-11 |
KR100522276B1 (ko) | 2005-12-21 |
DE69733522D1 (de) | 2005-07-21 |
MX9709332A (es) | 1998-03-31 |
CN1140066C (zh) | 2004-02-25 |
EP0830752A1 (en) | 1998-03-25 |
HK1010955A1 (en) | 1999-07-02 |
ATE298151T1 (de) | 2005-07-15 |
KR19990022258A (ko) | 1999-03-25 |
BR9702189B1 (pt) | 2011-02-08 |
AU2604497A (en) | 1997-10-22 |
AU713733B2 (en) | 1999-12-09 |
JP3231789B2 (ja) | 2001-11-26 |
CA2222925C (en) | 2005-06-21 |
CA2222925A1 (en) | 1997-10-09 |
BR9702189A (pt) | 1999-03-16 |
DE69733522T2 (de) | 2006-05-11 |
RU2188506C2 (ru) | 2002-08-27 |
EP0830752B1 (en) | 2005-06-15 |
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