AR050157A1 - Sincronizacion en el enlace inverso en sistemas de comunicacion de modo moviles - Google Patents

Sincronizacion en el enlace inverso en sistemas de comunicacion de modo moviles

Info

Publication number
AR050157A1
AR050157A1 ARP050102272A ARP050102272A AR050157A1 AR 050157 A1 AR050157 A1 AR 050157A1 AR P050102272 A ARP050102272 A AR P050102272A AR P050102272 A ARP050102272 A AR P050102272A AR 050157 A1 AR050157 A1 AR 050157A1
Authority
AR
Argentina
Prior art keywords
synchronization
communication systems
reverse link
mode communication
mobile mode
Prior art date
Application number
ARP050102272A
Other languages
English (en)
Inventor
Leonard N Schiff
Ahmad Jalali
Wei Shi
Original Assignee
Qualcomm Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of AR050157A1 publication Critical patent/AR050157A1/es

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
    • H04B7/1851—Systems using a satellite or space-based relay
    • H04B7/18513—Transmission in a satellite or space-based system
    • 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)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)

Abstract

Métodos y aparatos para la provision de una comunicacion de acceso multiple ortogonal en el enlace de retorno de un sistema de comunicacion satelital. En una realizacion se puede desarrollar un control de bucle cerrado de un parámetro de transmision asociado a senales de transmision. Sumado a ello, se monitorea los cambios de movimiento de una terminal de manera tal que se lleva a cabo un control de bucle abierto de un parámetro de transmision si el cambio detectado alcanza un umbral determinado. Por ejemplo, si se detecta un movimiento abrupto o repentino se lleva a cabo un control abierto.
ARP050102272A 2004-06-03 2005-06-02 Sincronizacion en el enlace inverso en sistemas de comunicacion de modo moviles AR050157A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/860,883 US7933215B2 (en) 2004-06-03 2004-06-03 Synchronization on reverse link of mobile mode communications systems

Publications (1)

Publication Number Publication Date
AR050157A1 true AR050157A1 (es) 2006-10-04

Family

ID=34971422

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP050102272A AR050157A1 (es) 2004-06-03 2005-06-02 Sincronizacion en el enlace inverso en sistemas de comunicacion de modo moviles

Country Status (7)

Country Link
US (1) US7933215B2 (es)
EP (1) EP1751889A1 (es)
JP (1) JP2008502210A (es)
CN (1) CN1993905A (es)
AR (1) AR050157A1 (es)
CA (1) CA2568605A1 (es)
WO (1) WO2005122430A1 (es)

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US7933215B2 (en) * 2004-06-03 2011-04-26 Qualcomm Incorporated Synchronization on reverse link of mobile mode communications systems
WO2006005048A2 (en) * 2004-06-30 2006-01-12 Idirect Incorporated Method, apparatus and system for rapid acquisition of remote nodes in a communication system
US7782811B2 (en) * 2005-04-05 2010-08-24 Skybitz, Inc. Multiple return link
US20070155315A1 (en) * 2006-01-03 2007-07-05 Samsung Electronics Co., Ltd. Apparatus and method for transparent relaying in a multi-hop relay cellular network
US20070177492A1 (en) * 2006-01-27 2007-08-02 Qualcomm Incorporated Methods and tools for expanding coverage of an ofdm broadcast transmitter via transmit timing advance
US7991288B1 (en) * 2006-02-07 2011-08-02 Lockheed Martin Corporation Optical code division multiple access data storage encryption and retrieval
JP5166287B2 (ja) * 2007-01-09 2013-03-21 株式会社エヌ・ティ・ティ・ドコモ 基地局装置及び通信制御方法
US8379745B1 (en) 2007-07-06 2013-02-19 Marvell International Ltd. Forward channel variation detection in a wireless communication system
KR101459014B1 (ko) * 2008-02-04 2014-11-07 삼성전자주식회사 이동통신 시스템의 주파수 제어 장치 및 방법
US20090268828A1 (en) * 2008-04-25 2009-10-29 Adc Telecommunications, Inc. Systems and methods for doppler shift compensation in ofdma communications
CN101854713A (zh) * 2010-03-30 2010-10-06 中国人民解放军信息工程大学 一种卫星cdma系统及其中反向链路的同步方法
WO2011151662A1 (en) * 2010-06-02 2011-12-08 Nokia Corporation Method and apparatus for adjacent-channel emission limit depending on synchronization of interfered receiver
EP2843976B1 (en) * 2012-04-26 2019-04-17 NEC Corporation Information distribution system, gateway device, distribution control method, and non-temporary computer readable medium storing program
JP5935504B2 (ja) * 2012-05-22 2016-06-15 富士通株式会社 通信装置及び通信方法
JP6142483B2 (ja) * 2012-08-21 2017-06-07 三菱電機株式会社 通信端末
JP5648659B2 (ja) * 2012-08-21 2015-01-07 三菱電機株式会社 通信システム、通信端末及び通信方法
JP6008103B2 (ja) * 2012-08-21 2016-10-19 三菱電機株式会社 ショートメッセージ通信端末
WO2014030447A1 (ja) * 2012-08-21 2014-02-27 三菱電機株式会社 通信システム、通信端末、通信方法、チップクロック発生方法および直交符号発生方法
JP5880651B2 (ja) * 2014-09-24 2016-03-09 三菱電機株式会社 チップクロック生成方法、直交符号生成方法及び通信端末
US10321450B2 (en) * 2014-12-09 2019-06-11 Myriota Pty Ltd Multicarrier communications system
US9900856B2 (en) 2015-03-20 2018-02-20 Qualcomm Incorporated Method and apparatus for time or frequency synchronization in non-geosynchronous satellite communication systems
CN106488546A (zh) * 2015-08-24 2017-03-08 中兴通讯股份有限公司 时间调整的方法及装置
US9979462B2 (en) * 2016-06-03 2018-05-22 Lockheed Martin Corporation Resilient virtual ground receivers
US20180097560A1 (en) * 2016-10-05 2018-04-05 Ubiqomm, LLC Apparatus and methods to provide communications to aerial platforms
GB2557628B (en) 2016-12-13 2020-01-01 Inmarsat Global Ltd Forward link power control
US10659107B2 (en) * 2018-07-18 2020-05-19 Totum Labs, Inc. System and method for compensating the effects of doppler
CN110505001B (zh) * 2019-07-30 2020-11-06 北京大学 一种基于卫星载荷平台的旁路网络导引方法
JP7059232B2 (ja) * 2019-08-26 2022-04-25 Ｈａｐｓモバイル株式会社 Ｈａｐｓマルチフィーダリンクにおけるリバースリンク干渉キャンセリング
CN110690918B (zh) * 2019-09-28 2021-09-03 西南电子技术研究所（中国电子科技集团公司第十研究所） 航天测控链路参数调整的方法
JP7236370B2 (ja) * 2019-11-01 2023-03-09 Ｈａｐｓモバイル株式会社 Ｈａｐｓのマルチフィーダリンクにおけるスペクトル拡散パイロット信号を用いた伝搬路応答測定及び干渉キャンセリング
US11265076B2 (en) * 2020-04-10 2022-03-01 Totum Labs, Inc. System and method for forward error correcting across multiple satellites

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JPH0894733A (ja) 1994-09-26 1996-04-12 Japan Radio Co Ltd Ｇｐｓ受信機
US5910945A (en) 1996-04-30 1999-06-08 Trw Inc. Method and apparatus for synchronizing communications in a satellite based telecommunications system
US5703595A (en) * 1996-08-02 1997-12-30 Motorola, Inc. Method and apparatus for erratic doppler frequency shift compensation
US5943606A (en) * 1996-09-30 1999-08-24 Qualcomm Incorporated Determination of frequency offsets in communication systems
JPH10142312A (ja) 1996-11-07 1998-05-29 Matsushita Electric Ind Co Ltd 高周波受信機
US5956619A (en) * 1996-12-12 1999-09-21 Globalstar L.P. Satellite controlled power control for personal communication user terminals
JP2000040958A (ja) 1998-07-24 2000-02-08 Advantest Corp 基準周波数・タイミング発生装置
US7082292B2 (en) * 2000-04-18 2006-07-25 Sirf Technology, Inc. Mobile communications device with GPS receiver and common clock source
EP1518339A1 (en) 2002-06-24 2005-03-30 QUALCOMM Incorporated Method for return link synchronisation in an orthogonal cdma satellite system
US7181666B2 (en) * 2003-04-29 2007-02-20 Qualcomm, Incorporated Method, apparatus, and system for user-multiplexing in multiple access systems with retransmission
US7933215B2 (en) * 2004-06-03 2011-04-26 Qualcomm Incorporated Synchronization on reverse link of mobile mode communications systems

Also Published As

Publication number Publication date
US20050270999A1 (en) 2005-12-08
CA2568605A1 (en) 2005-12-22
EP1751889A1 (en) 2007-02-14
JP2008502210A (ja) 2008-01-24
CN1993905A (zh) 2007-07-04
WO2005122430A1 (en) 2005-12-22
US7933215B2 (en) 2011-04-26

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