AR046371A1 - Metodo y aparato para sincronizacion en comunicaciones inalambricas - Google Patents

Metodo y aparato para sincronizacion en comunicaciones inalambricas

Info

Publication number
AR046371A1
AR046371A1 ARP040104106A ARP040104106A AR046371A1 AR 046371 A1 AR046371 A1 AR 046371A1 AR P040104106 A ARP040104106 A AR P040104106A AR P040104106 A ARP040104106 A AR P040104106A AR 046371 A1 AR046371 A1 AR 046371A1
Authority
AR
Argentina
Prior art keywords
transmission
path location
synchronization
significant path
sync
Prior art date
Application number
ARP040104106A
Other languages
English (en)
Inventor
Aykut Bultan
Donald M Grieco
Charles Dennean
Jung-Lin Pan
Original Assignee
Interdigital Tech Corp
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 Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of AR046371A1 publication Critical patent/AR046371A1/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks
    • 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
    • H04B1/70757—Synchronisation aspects with code phase acquisition with increased resolution, i.e. higher than half a chip
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2668—Arrangements for Wireless Code-Division Multiple Access [CDMA] System Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

Un método y sistema para sincronización de enlace ascendente (UL) de una transmisión de enlace ascendente desde una pluralidad de unidades inalámbricas de transmisión/recepción (WTRUs) a un Nodo B en un sistema de acceso múltiple por división de código (CDMA). Un Nodo B recibe una transmisión que incluye una secuencia de sincronización UL (SYNC_UL) de una WTRU. Un muestreador muestrea la transmisión a una velocidad de muestreo mayor que un chip rate. Las muestras son sometidas a down- sampling y se detecta la secuencia SYNC_UL a una velocidad menor. Se determina una primera ubicación de trayectoria significativa de la secuencia SYNC_UL detectada y, en base a la primera ubicación de trayectoria significativa, se determina una ubicación de trayectoria significativa final. La ubicación de trayectoria significativa final es cuantificada y se transmite UpPCHPOS a la WTRU para ajustar un timing de transmisión UL.
ARP040104106A 2003-11-07 2004-11-08 Metodo y aparato para sincronizacion en comunicaciones inalambricas AR046371A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51814103P 2003-11-07 2003-11-07

Publications (1)

Publication Number Publication Date
AR046371A1 true AR046371A1 (es) 2005-12-07

Family

ID=34590226

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP040104106A AR046371A1 (es) 2003-11-07 2004-11-08 Metodo y aparato para sincronizacion en comunicaciones inalambricas

Country Status (14)

Country Link
US (2) US6954447B2 (es)
EP (1) EP1687915B1 (es)
JP (1) JP2007513542A (es)
KR (2) KR100754819B1 (es)
CN (1) CN1879319A (es)
AR (1) AR046371A1 (es)
AT (1) ATE391364T1 (es)
CA (1) CA2544960A1 (es)
DE (1) DE602004012885T2 (es)
ES (1) ES2300870T3 (es)
MX (1) MXPA06005005A (es)
NO (1) NO20062621L (es)
TW (2) TWI252643B (es)
WO (1) WO2005048506A2 (es)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2484251C (en) * 2002-04-30 2015-06-23 University Of South Florida Materials and methods for inhibition of respiratory syncytial virus infection
US20070064665A1 (en) 2005-08-23 2007-03-22 Interdigital Technology Corporation Method and apparatus for accessing an uplink random access channel in a single carrier frequency division multiple access system
CN101185270B (zh) * 2005-11-16 2010-10-13 中兴通讯股份有限公司 移动通信系统中的上行同步方法
CN101438511A (zh) 2006-03-24 2009-05-20 交互数字技术公司 用于保持上行链路同步并且降低电池功耗的方法和设备
US9247515B2 (en) 2006-04-25 2016-01-26 Qualcomm Incorporated Enhanced mobility support for wireless communication
EP1909409A1 (de) * 2006-10-04 2008-04-09 Nokia Siemens Networks Gmbh & Co. Kg Verfahren zur zeitlichen Steuerung einer Signalübertragung in Aufwärtsrichtung in einem Funk-Kommunikationssystem
KR101490245B1 (ko) 2008-02-25 2015-02-05 엘지전자 주식회사 광대역 무선접속 시스템의 서브채널 할당을 고려한 공존지원 방법
KR101467782B1 (ko) * 2008-02-25 2014-12-03 엘지전자 주식회사 이동 단말에서 공존 지원 방법
KR101467783B1 (ko) * 2008-02-25 2014-12-03 엘지전자 주식회사 무선 개인영역 통신망과의 공존 지원 방법
KR101506171B1 (ko) 2009-01-09 2015-03-27 삼성전자주식회사 이동통신 시스템에서 단말의 랜덤 액세스 제어장치 및 방법
US9204410B2 (en) * 2009-10-08 2015-12-01 Qualcomm Incorporated Method and apparatus for repeating uplink synchronization in time division synchronous code division multiple access (TD-SCDMA) networks
CN102100101B (zh) * 2009-10-14 2014-03-19 高通股份有限公司 时分同步码分多址(td-scdma)网络中传输失败检测的方法和装置
US8594072B2 (en) * 2010-03-31 2013-11-26 Qualcomm Incorporated User equipment based method to improve synchronization shift command convergence in TD-SCDMA uplink synchronization
US8874111B2 (en) * 2010-08-12 2014-10-28 Qualcomm Incorporated Uplink synchronization of TD-SCDMA multiple USIM mobile terminal during handover

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1022874A (ja) * 1996-07-09 1998-01-23 Hitachi Ltd Ｃｄｍａ通信システムおよび通信方法
US6134286A (en) * 1997-10-14 2000-10-17 Ericsson Inc. Synchronization techniques and systems for radiocommunication
US6654432B1 (en) * 1998-06-08 2003-11-25 Wireless Facilities, Inc. Joint maximum likelihood frame and timing estimation for a digital receiver
KR100269591B1 (ko) * 1998-07-23 2000-10-16 조정남 이동통신시스템에서의 역방향 동기 설정 방법 및 그를 이용한역방향 동기식 전송 방법
DE69832483T2 (de) * 1998-08-19 2006-06-08 Siemens Ag Spreizspektrumempfänger zur Verminderung von Nachbarsymbolstörungen
US6205193B1 (en) 1998-10-15 2001-03-20 Ericsson Inc. Systems and methods for fast terminal synchronization in a wireless communication system
AU758861B2 (en) * 2000-11-17 2003-04-03 Samsung Electronics Co., Ltd. Apparatus and method for measuring propagation delay in an NB-TDD CDMA mobile communication system
US6829253B1 (en) * 2000-11-28 2004-12-07 Ericsson Inc. Methods and systems for efficiently using synchronization information in transitioning between channels in TDMA and CDMA communications systems

Also Published As

Publication number Publication date
DE602004012885T2 (de) 2009-04-09
KR100754819B1 (ko) 2007-09-04
US6954447B2 (en) 2005-10-11
TWI252643B (en) 2006-04-01
US20050099986A1 (en) 2005-05-12
TW200518502A (en) 2005-06-01
ES2300870T3 (es) 2008-06-16
EP1687915A2 (en) 2006-08-09
DE602004012885D1 (de) 2008-05-15
WO2005048506A3 (en) 2005-09-15
KR20060097756A (ko) 2006-09-15
ATE391364T1 (de) 2008-04-15
TW200612685A (en) 2006-04-16
EP1687915A4 (en) 2006-12-27
NO20062621L (no) 2006-08-03
CN1879319A (zh) 2006-12-13
KR20060103346A (ko) 2006-09-28
US20050276250A1 (en) 2005-12-15
JP2007513542A (ja) 2007-05-24
MXPA06005005A (es) 2006-07-06
EP1687915B1 (en) 2008-04-02
CA2544960A1 (en) 2005-05-26
WO2005048506A2 (en) 2005-05-26

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Legal Events

Date Code Title Description
FG Grant, registration
FD Application declared void or lapsed, e.g., due to non-payment of fee