AR004981A1 - Un metodo para la adquisicion de senales en una disposicion de comunicacion inalambrica y una disposicion de telecomunicaciones con base satelital para llevar a la practica dicho metodo. - Google Patents
Un metodo para la adquisicion de senales en una disposicion de comunicacion inalambrica y una disposicion de telecomunicaciones con base satelital para llevar a la practica dicho metodo.Info
- Publication number
- AR004981A1 AR004981A1 ARP960105406A ARP960105406A AR004981A1 AR 004981 A1 AR004981 A1 AR 004981A1 AR P960105406 A ARP960105406 A AR P960105406A AR P960105406 A ARP960105406 A AR P960105406A AR 004981 A1 AR004981 A1 AR 004981A1
- Authority
- AR
- Argentina
- Prior art keywords
- access slot
- access
- provision
- terminal
- scan window
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
- H04B1/70754—Setting of search window, i.e. range of code offsets to be searched
-
- 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]
Abstract
La invencion describe un metodo para la adquisicion de senales en un sitema de telecomunicaciones inalambricas que tiene gran incertidumbre dedemoras de transmision. Primero una terminal adquiere una senal de enlace progresiva desde unacentral y extrae informacion de tiempo de esa senal deenlace progresiva. Usando la informacion de tiempo la terminal calcula el tiempo en el cual tiene lugar una siguiente ventana de exploracion durante unaranura de acceso y el tiempo y elesta do de codigo de ruido seudoaleatorio necesario para transmitir una sonda de acceso como para llegar durante laventana de exploracion, asumiendo que la terminal esta ubicada a una distancia maxima de la central. La terminal procede atransmitir las sondas de accesoadicionales en tiempos que tienen lugar en un perido de ranura de acceso mas un intervalo de tiempo delta despues de la transmision anterior. El intervalo detiempo delta tiene una duracion menor que la de una ventanade exploracio n asociada con cada ranura de acceso. Cada ranura de acceso es procesada convarios codigos de transmision cuyos estados son incrementados por un periodo de ranura de acceso para cada sonda de acceso transmitida. La invenciontambien serefiere a una disposicion de telecomunicaciones inalambrica con base satelital para llevar a la practica dicho metodo.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/558,557 US5907813A (en) | 1995-11-30 | 1995-11-30 | Signal acquisition in a wireless communication system by transmitting repeated access probes from a terminal to a hub |
Publications (1)
Publication Number | Publication Date |
---|---|
AR004981A1 true AR004981A1 (es) | 1999-04-07 |
Family
ID=24229999
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP960105406A AR004981A1 (es) | 1995-11-30 | 1996-11-28 | Un metodo para la adquisicion de senales en una disposicion de comunicacion inalambrica y una disposicion de telecomunicaciones con base satelital para llevar a la practica dicho metodo. |
Country Status (4)
Country | Link |
---|---|
US (1) | US5907813A (es) |
AR (1) | AR004981A1 (es) |
AU (1) | AU1159597A (es) |
WO (1) | WO1997020402A1 (es) |
Families Citing this family (26)
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IT1279591B1 (it) * | 1995-05-12 | 1997-12-16 | Marposs Spa | Sistema e metodo di trasmissione di segnali via etere per sonde di controllo |
KR100280559B1 (ko) * | 1996-01-08 | 2001-02-01 | 포만 제프리 엘 | 멀티미디어파일배포를위한파일서버 |
US6101175A (en) * | 1997-10-31 | 2000-08-08 | Motorola, Inc. | Method and apparatus for handoff within a communication system |
US8538322B1 (en) | 1998-02-23 | 2013-09-17 | Qualcomm Incorporated | Transmit and admission control for CDMA satellite communication system |
US6094562A (en) * | 1998-04-07 | 2000-07-25 | Lucent Technologies Inc. | Timing compensation for distant base station antennas in telecommunication systems |
US6285876B1 (en) * | 1998-04-07 | 2001-09-04 | Lucent Technologies Inc. | Test unit with programmable transmit timing for telecommunication systems |
US6526029B1 (en) * | 1998-04-24 | 2003-02-25 | Lucent Technologies Inc. | Search scheme for receivers in mobile communication systems |
US6104927A (en) * | 1998-05-28 | 2000-08-15 | Motorola, Inc. | Communication system, mobile station, and method for mobile station registration |
JP3042521B2 (ja) * | 1998-07-06 | 2000-05-15 | 日本電気株式会社 | 移動通信システムおよび移動通信方法 |
US6381225B1 (en) * | 1998-08-27 | 2002-04-30 | Qualcomm Incorporated | System and method for resolving frequency and timing uncertainty in access transmissions in a spread spectrum communication system |
US6304759B1 (en) * | 1998-08-31 | 2001-10-16 | Lucent Technologies Inc. | Method for extending the range of a wireless communication system |
KR100329520B1 (ko) * | 1998-12-08 | 2002-03-23 | 조정남 | 이동통신시스템에서 지연소자 또는 궤환지연소자를 이용한 셀 커버리지 확장 방법 |
US6337980B1 (en) | 1999-03-18 | 2002-01-08 | Hughes Electronics Corporation | Multiple satellite mobile communications method and apparatus for hand-held terminals |
US6920309B1 (en) * | 1999-03-18 | 2005-07-19 | The Directv Group, Inc. | User positioning technique for multi-platform communication system |
US7215954B1 (en) | 1999-03-18 | 2007-05-08 | The Directv Group, Inc. | Resource allocation method for multi-platform communication system |
US6990314B1 (en) | 1999-03-18 | 2006-01-24 | The Directv Group, Inc. | Multi-node point-to-point satellite communication system employing multiple geo satellites |
JP3554240B2 (ja) * | 1999-12-28 | 2004-08-18 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信システムのパスタイミング検出方法および基地局装置 |
US6904079B2 (en) | 2000-02-08 | 2005-06-07 | Ipr Licensing, Inc. | Access channel structure for wireless communication system |
GB0007334D0 (en) * | 2000-03-28 | 2000-05-17 | Koninkl Philips Electronics Nv | Radio communication system |
US6963548B1 (en) | 2000-04-17 | 2005-11-08 | The Directv Group, Inc. | Coherent synchronization of code division multiple access signals |
US6388615B1 (en) * | 2000-06-06 | 2002-05-14 | Hughes Electronics Corporation | Micro cell architecture for mobile user tracking communication system |
US7257418B1 (en) | 2000-08-31 | 2007-08-14 | The Directv Group, Inc. | Rapid user acquisition by a ground-based beamformer |
US6763242B1 (en) | 2000-09-14 | 2004-07-13 | The Directv Group, Inc. | Resource assignment system and method for determining the same |
US6891813B2 (en) * | 2000-12-12 | 2005-05-10 | The Directv Group, Inc. | Dynamic cell CDMA code assignment system and method |
US7633895B2 (en) * | 2002-06-24 | 2009-12-15 | Qualcomm Incorporated | Orthogonal code division multiple access on return link of satellite links |
US8023398B2 (en) * | 2007-01-30 | 2011-09-20 | Qualcomm Incorporated | Using a single FHT to decode access-based handoff probes from multiple users |
Family Cites Families (29)
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US4569042A (en) * | 1983-12-23 | 1986-02-04 | At&T Bell Laboratories | Time measurements in a transmission path |
US4658096A (en) * | 1984-09-18 | 1987-04-14 | Metrofone, Inc. | System for interfacing a standard telephone set with a radio transceiver |
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US4901307A (en) * | 1986-10-17 | 1990-02-13 | Qualcomm, Inc. | Spread spectrum multiple access communication system using satellite or terrestrial repeaters |
US4922517A (en) * | 1987-04-08 | 1990-05-01 | Metrofone, Inc. | System for interfacing a standard telephone set with a radio transceiver |
SE8802229D0 (sv) * | 1988-06-14 | 1988-06-14 | Ericsson Telefon Ab L M | Forfarande vid mobilradiostation |
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US5267262A (en) * | 1989-11-07 | 1993-11-30 | Qualcomm Incorporated | Transmitter power control system |
US5257283A (en) * | 1989-11-07 | 1993-10-26 | Qualcomm Incorporated | Spread spectrum transmitter power control method and system |
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US5101501A (en) * | 1989-11-07 | 1992-03-31 | Qualcomm Incorporated | Method and system for providing a soft handoff in communications in a cdma cellular telephone system |
US5056109A (en) * | 1989-11-07 | 1991-10-08 | Qualcomm, Inc. | Method and apparatus for controlling transmission power in a cdma cellular mobile telephone system |
US5265119A (en) * | 1989-11-07 | 1993-11-23 | Qualcomm Incorporated | Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system |
US5103459B1 (en) * | 1990-06-25 | 1999-07-06 | Qualcomm Inc | System and method for generating signal waveforms in a cdma cellular telephone system |
US5164958A (en) * | 1991-05-22 | 1992-11-17 | Cylink Corporation | Spread spectrum cellular handoff method |
US5235615A (en) * | 1991-05-22 | 1993-08-10 | Cylink Corporation | Spread spectrum method |
US5177765A (en) * | 1991-06-03 | 1993-01-05 | Spectralink Corporation | Direct-sequence spread-spectrum digital signal acquisition and tracking system and method therefor |
US5184347A (en) * | 1991-07-09 | 1993-02-02 | At&T Bell Laboratories | Adaptive synchronization arrangement |
CA2066538C (en) * | 1991-07-09 | 1997-12-23 | Brian David Bolliger | Mobile-telephone system call processing arrangement |
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ES2099228T3 (es) * | 1992-01-31 | 1997-05-16 | Cit Alcatel | Procedimiento para determinar el tiempo de propagacion entre la estacion terminal distante y la estacion terminal central en una red de transmision bidireccional del tipo punto-multipuntos. |
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US5438565A (en) * | 1993-03-31 | 1995-08-01 | At&T Corp. | Packet switch to provide code division, multiple access cellular service |
US5297162A (en) * | 1993-06-04 | 1994-03-22 | Motorola, Inc. | System and method for bit timing synchronization in an adaptive direct sequence CDMA communication system |
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JP2677191B2 (ja) * | 1994-03-15 | 1997-11-17 | 日本電気株式会社 | Cdma通信方式 |
JPH07297776A (ja) * | 1994-04-22 | 1995-11-10 | Oki Electric Ind Co Ltd | 通信システム |
-
1995
- 1995-11-30 US US08/558,557 patent/US5907813A/en not_active Expired - Lifetime
-
1996
- 1996-11-13 WO PCT/US1996/018293 patent/WO1997020402A1/en active Application Filing
- 1996-11-13 AU AU11595/97A patent/AU1159597A/en not_active Abandoned
- 1996-11-28 AR ARP960105406A patent/AR004981A1/es active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
AU1159597A (en) | 1997-06-19 |
WO1997020402A1 (en) | 1997-06-05 |
US5907813A (en) | 1999-05-25 |
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Legal Events
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FG | Grant, registration |