MX9706475A - Metodo para sincronizar sistemas de comunicaciones de acceso multiple con direccion de codigo, conmutados por satelite. - Google Patents
Metodo para sincronizar sistemas de comunicaciones de acceso multiple con direccion de codigo, conmutados por satelite.Info
- Publication number
- MX9706475A MX9706475A MX9706475A MX9706475A MX9706475A MX 9706475 A MX9706475 A MX 9706475A MX 9706475 A MX9706475 A MX 9706475A MX 9706475 A MX9706475 A MX 9706475A MX 9706475 A MX9706475 A MX 9706475A
- Authority
- MX
- Mexico
- Prior art keywords
- terrestrial
- propagation delay
- communication system
- cdma
- cdma communication
- Prior art date
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
- H04B7/204—Multiple access
- H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/04—Large scale networks; Deep hierarchical networks
- H04W84/06—Airborne or Satellite Networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
La presente invencion se refiere a sincronizacion de una señal CDMA transmitida en tierra con deshacer la dispersion y rehacer la dispersion en un satélite remoto, para transmision a un segundo sitio terrestre, que se logra de acuerdo con los procesos descritos en las reivindicaciones. Las señales de sincronía y de acceso de enlace ascendente, se adquieren en un conmutador de satélite y un tiempo de retardo de propagacion de referencia se establece en términos de marcas de sincronizacion cuantificadas con intervalos dentro de un rango de tamaños de intervalos de chip empleados en los codigos de dispersion CDMA del sistema. El retardo de propagacion se define en términos de una de las marcas de sincronizacion cuantificadas que definen cuando una primer señal desde una unidad de subscriptor terrestre, se recibe. Este retardo de propagacion se transmite a una unidad de subscriptor terrestre y utiliza para ajustar la sincronizacion de chips de codigos CDMA de enlace ascendente.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08704041 | 1996-08-28 | ||
US08/704,041 US5838669A (en) | 1996-08-28 | 1996-08-28 | Method of synchronizing satellite switched CDMA communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
MXPA97006475A MXPA97006475A (es) | 1998-02-01 |
MX9706475A true MX9706475A (es) | 1998-02-28 |
Family
ID=24827816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX9706475A MX9706475A (es) | 1996-08-28 | 1997-08-25 | Metodo para sincronizar sistemas de comunicaciones de acceso multiple con direccion de codigo, conmutados por satelite. |
Country Status (11)
Country | Link |
---|---|
US (1) | US5838669A (es) |
EP (1) | EP0827293A3 (es) |
JP (1) | JP4184459B2 (es) |
KR (1) | KR100263109B1 (es) |
CN (1) | CN1182315A (es) |
AR (1) | AR009318A1 (es) |
AU (1) | AU733219B2 (es) |
BR (1) | BR9704484A (es) |
CA (1) | CA2203475C (es) |
MX (1) | MX9706475A (es) |
SG (1) | SG54523A1 (es) |
Families Citing this family (42)
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FI101659B1 (fi) * | 1996-07-12 | 1998-07-31 | Nokia Mobile Phones Ltd | Viiveen estimointimenetelmä ja vastaanotin |
US5867525A (en) * | 1997-06-10 | 1999-02-02 | L-3 Commuications Corporation | Synchronizer and method therefor and communications system incorporating same |
US6005854A (en) * | 1997-08-08 | 1999-12-21 | Cwill Telecommunication, Inc. | Synchronous wireless access protocol method and apparatus |
US6144654A (en) * | 1997-09-03 | 2000-11-07 | Motorola, Inc. | Method of combining and separating groups of multiple CDMA-encoded data signals and apparatus therefor |
US6055230A (en) * | 1997-09-05 | 2000-04-25 | Metawave Communications Corporation | Embedded digital beam switching |
US6091703A (en) * | 1997-10-10 | 2000-07-18 | Trw Inc. | Bulk despreading of multiple independent CDMA sources |
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KR100407355B1 (ko) * | 1998-02-14 | 2004-04-03 | 삼성전자주식회사 | 이동통신시스템의역방향링크시간정렬장치및방법 |
AUPP310798A0 (en) | 1998-04-22 | 1998-05-14 | Soltec Research Pty Ltd | Vehicle system for a composition comprising a piperidinopyrimidine derivative |
KR100381012B1 (ko) * | 1998-05-04 | 2003-08-19 | 한국전자통신연구원 | 부호분할 다중접속 방식에서 상향 공통 채널의 임의 접속 장치및 방법 |
US6335920B1 (en) * | 1998-06-29 | 2002-01-01 | Hughes Electronics Corporation | Satellite-based measurement for uplink power control and time synchronization |
US6215780B1 (en) | 1998-07-17 | 2001-04-10 | Motorola, Inc. | Method and system for synchronous code division multiplexed communications |
US6876623B1 (en) * | 1998-12-02 | 2005-04-05 | Agere Systems Inc. | Tuning scheme for code division multiplex broadcasting system |
US6980531B1 (en) | 1998-12-02 | 2005-12-27 | At&T Corp. | Multiple access spread spectrum switching methodology |
US6169887B1 (en) * | 1999-03-02 | 2001-01-02 | Motorola, Inc. | Range extension within a communication system |
KR100673420B1 (ko) * | 1999-06-29 | 2007-01-23 | 에스케이 텔레콤주식회사 | 통신시스템에서의 동기신호 송수신 장치 및 그의 동기획득 방법 |
KR100341088B1 (ko) * | 1999-08-16 | 2002-06-20 | 김진찬 | 리턴 링크에 직접순차 코드분할다중접속 방식을 사용하는 위성통신 시스템의 초기 액세스 동기 확립 방법 |
EP1094619A2 (en) * | 1999-10-20 | 2001-04-25 | Sony Corporation | Signal receiving apparatus for global positioning system and mobile communication system |
KR100701766B1 (ko) | 1999-12-31 | 2007-03-29 | 주식회사 케이티 | 이동통신시스템에서의 프레임 동기 방법 |
US7009958B1 (en) | 2000-05-19 | 2006-03-07 | At&T Corp. | Unified encoding process for generalized multiple access |
US6859652B2 (en) | 2000-08-02 | 2005-02-22 | Mobile Satellite Ventures, Lp | Integrated or autonomous system and method of satellite-terrestrial frequency reuse using signal attenuation and/or blockage, dynamic assignment of frequencies and/or hysteresis |
US7792488B2 (en) | 2000-12-04 | 2010-09-07 | Atc Technologies, Llc | Systems and methods for transmitting electromagnetic energy over a wireless channel having sufficiently weak measured signal strength |
US6912211B2 (en) * | 2001-01-26 | 2005-06-28 | At&T Corp. | CDMA to packet-switching interface for code division switching in a terrestrial wireless system |
US20040202137A1 (en) * | 2001-01-26 | 2004-10-14 | Gerakoulis Diakoumis Parissis | Method for CDMA to packet-switching interface code division switching in a terrestrial wireless system |
ES2213095T3 (es) * | 2001-09-24 | 2004-08-16 | Evolium S.A.S. | Metodo para sincronizar nodos terrestres equipados con receptores gnss y pertenecientes a una red terrestre. |
US8418210B2 (en) * | 2002-02-26 | 2013-04-09 | Thomson Licensing | Satellite television system ground station having wideband multi-channel LNB converter/transmitter architecture with controlled uplink transmission |
KR100977077B1 (ko) * | 2002-05-29 | 2010-08-19 | 톰슨 라이센싱 | 위성 통신 시스템에서 무선 리턴 채널 신호의 송신을가능하게 하는 방법 및 장치 |
EP1518339A1 (en) * | 2002-06-24 | 2005-03-30 | QUALCOMM Incorporated | Method for return link synchronisation in an orthogonal cdma satellite system |
JP3950764B2 (ja) * | 2002-07-31 | 2007-08-01 | 日本電気株式会社 | 無線基地局及びそれに用いる無線フレーム同期検出方法並びにそのプログラム |
JP2004289717A (ja) * | 2003-03-25 | 2004-10-14 | Mitsubishi Electric Corp | ランダムアクセス制御方法、基地局および端末装置 |
US20050095982A1 (en) * | 2003-11-05 | 2005-05-05 | Blanchard Scott D. | MSS user equipment and methods for synchronizing MSS user equipment |
WO2007025439A1 (fr) * | 2005-08-31 | 2007-03-08 | Huawei Technologies Co., Ltd. | Methode d'implementation et equipement de retard de propagation d'une voie d'acces aleatoire physique dans une grande couverture |
US8228957B1 (en) * | 2006-05-26 | 2012-07-24 | Sprint Communications Company L.P. | Differential delay mitigation in diverse backhaul environments |
KR101029099B1 (ko) | 2008-12-31 | 2011-04-13 | 한국과학기술원 | 위성 통신 시스템의 상하향 시간 동기 획득 방법 및 이를 이용한 위성 통신 시스템 |
CN101854729A (zh) * | 2010-03-30 | 2010-10-06 | 中国人民解放军信息工程大学 | 一种卫星通信系统的随机接入方法 |
CN104980244B (zh) * | 2015-07-01 | 2017-07-28 | 大唐电信(成都)信息技术有限公司 | 时间同步设备输入线路延时补偿装置及方法 |
CN107682074B (zh) * | 2017-11-08 | 2024-03-29 | 南京天际易达通信技术有限公司 | 一种卫星上行信号发射时间补偿方法、装置及通信系统 |
US10879952B2 (en) * | 2018-04-18 | 2020-12-29 | Huawei Technologies Co., Ltd. | Apparatus and receiver for performing synchronization in analog spread spectrum systems |
CN109743102B (zh) * | 2019-01-28 | 2021-03-05 | 西安玄黄通信技术有限公司 | 一种微纳卫星的时间基准同步方法及其组网控制方法 |
CN115080498B (zh) * | 2022-07-27 | 2022-11-08 | 成都奇芯微电子有限公司 | 基于卫星导航应用的信号数据存储方法以及存储芯片 |
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US5105437A (en) * | 1990-07-26 | 1992-04-14 | Unisys Corporation | Programmable digital acquisition and tracking controller |
US5128957A (en) * | 1990-08-10 | 1992-07-07 | Ricoh Company, Ltd. | Initial acquisition method in spread spectrum system and such system |
US5359624A (en) * | 1993-06-07 | 1994-10-25 | Motorola, Inc. | System and method for chip timing synchronization in an adaptive direct sequence CDMA communication system |
CN1129268C (zh) * | 1993-10-14 | 2003-11-26 | Ntt移动通信网株式会社 | 同步设备和码分多址通信设备及其同步的方法 |
JP2677191B2 (ja) * | 1994-03-15 | 1997-11-17 | 日本電気株式会社 | Cdma通信方式 |
US5504787A (en) * | 1994-03-23 | 1996-04-02 | Loral Corporation | Coherent sequential PN code extractor |
US5511067A (en) * | 1994-06-17 | 1996-04-23 | Qualcomm Incorporated | Layered channel element in a base station modem for a CDMA cellular communication system |
-
1996
- 1996-08-28 US US08/704,041 patent/US5838669A/en not_active Expired - Lifetime
-
1997
- 1997-04-23 CA CA002203475A patent/CA2203475C/en not_active Expired - Fee Related
- 1997-06-24 SG SG1997002135A patent/SG54523A1/en unknown
- 1997-08-21 EP EP97114478A patent/EP0827293A3/en not_active Withdrawn
- 1997-08-22 BR BR9704484A patent/BR9704484A/pt active Search and Examination
- 1997-08-25 AR ARP970103848A patent/AR009318A1/es active IP Right Grant
- 1997-08-25 CN CN97117684A patent/CN1182315A/zh active Pending
- 1997-08-25 MX MX9706475A patent/MX9706475A/es not_active IP Right Cessation
- 1997-08-26 AU AU35300/97A patent/AU733219B2/en not_active Ceased
- 1997-08-28 JP JP23193497A patent/JP4184459B2/ja not_active Expired - Lifetime
- 1997-08-28 KR KR1019970045785A patent/KR100263109B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JP4184459B2 (ja) | 2008-11-19 |
AU733219B2 (en) | 2001-05-10 |
EP0827293A2 (en) | 1998-03-04 |
US5838669A (en) | 1998-11-17 |
AR009318A1 (es) | 2000-04-12 |
CA2203475C (en) | 2000-08-22 |
EP0827293A3 (en) | 2002-07-03 |
KR19980019217A (ko) | 1998-06-05 |
CA2203475A1 (en) | 1998-02-28 |
CN1182315A (zh) | 1998-05-20 |
BR9704484A (pt) | 1999-01-26 |
KR100263109B1 (ko) | 2000-08-01 |
JPH1098447A (ja) | 1998-04-14 |
SG54523A1 (en) | 1998-11-16 |
AU3530097A (en) | 1998-03-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG | Grant or registration | ||
MM | Annulment or lapse due to non-payment of fees |