AR046371A1 - Metodo y aparato para sincronizacion en comunicaciones inalambricas - Google Patents
Metodo y aparato para sincronizacion en comunicaciones inalambricasInfo
- 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
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
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.
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) | KR20060103346A (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) | TW200612685A (es) |
WO (1) | WO2005048506A2 (es) |
Families Citing this family (14)
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 |
WO2007111941A2 (en) | 2006-03-24 | 2007-10-04 | Interdigital Technology Corporation | Method and apparatus for maintaining uplink synchronization and reducing battery power consumption |
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 |
KR101467782B1 (ko) * | 2008-02-25 | 2014-12-03 | 엘지전자 주식회사 | 이동 단말에서 공존 지원 방법 |
KR101490245B1 (ko) | 2008-02-25 | 2015-02-05 | 엘지전자 주식회사 | 광대역 무선접속 시스템의 서브채널 할당을 고려한 공존지원 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 |
CN102204371B (zh) * | 2009-10-08 | 2015-06-03 | 高通股份有限公司 | 用于在时分同步码分多址(td-scdma)网络中重复上行链路同步的方法和装置 |
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)
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 |
EP0981206B1 (en) * | 1998-08-19 | 2005-11-23 | Siemens Aktiengesellschaft | Spread spectrum receiver with reduction of intersymbol interference |
US6205193B1 (en) | 1998-10-15 | 2001-03-20 | Ericsson Inc. | Systems and methods for fast terminal synchronization in a wireless communication system |
CN1214553C (zh) * | 2000-11-17 | 2005-08-10 | 三星电子株式会社 | 在窄带时分双工码分多址移动通信系统中测量传播延迟的设备和方法 |
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 |
-
2004
- 2004-10-26 US US10/973,134 patent/US6954447B2/en not_active Expired - Fee Related
- 2004-11-03 KR KR1020067013605A patent/KR20060103346A/ko not_active Application Discontinuation
- 2004-11-03 CA CA002544960A patent/CA2544960A1/en not_active Abandoned
- 2004-11-03 ES ES04810253T patent/ES2300870T3/es active Active
- 2004-11-03 KR KR1020067011032A patent/KR100754819B1/ko not_active IP Right Cessation
- 2004-11-03 EP EP04810253A patent/EP1687915B1/en not_active Not-in-force
- 2004-11-03 AT AT04810253T patent/ATE391364T1/de not_active IP Right Cessation
- 2004-11-03 DE DE602004012885T patent/DE602004012885T2/de active Active
- 2004-11-03 WO PCT/US2004/036564 patent/WO2005048506A2/en active Application Filing
- 2004-11-03 JP JP2006539619A patent/JP2007513542A/ja not_active Withdrawn
- 2004-11-03 MX MXPA06005005A patent/MXPA06005005A/es unknown
- 2004-11-03 CN CN200480033151.1A patent/CN1879319A/zh active Pending
- 2004-11-05 TW TW094115141A patent/TW200612685A/zh unknown
- 2004-11-05 TW TW093133910A patent/TWI252643B/zh active
- 2004-11-08 AR ARP040104106A patent/AR046371A1/es not_active Application Discontinuation
-
2005
- 2005-08-12 US US11/202,586 patent/US20050276250A1/en not_active Abandoned
-
2006
- 2006-06-07 NO NO20062621A patent/NO20062621L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
TW200612685A (en) | 2006-04-16 |
EP1687915A2 (en) | 2006-08-09 |
WO2005048506A2 (en) | 2005-05-26 |
EP1687915B1 (en) | 2008-04-02 |
NO20062621L (no) | 2006-08-03 |
KR20060097756A (ko) | 2006-09-15 |
MXPA06005005A (es) | 2006-07-06 |
US20050099986A1 (en) | 2005-05-12 |
DE602004012885T2 (de) | 2009-04-09 |
TW200518502A (en) | 2005-06-01 |
US20050276250A1 (en) | 2005-12-15 |
ATE391364T1 (de) | 2008-04-15 |
CN1879319A (zh) | 2006-12-13 |
EP1687915A4 (en) | 2006-12-27 |
DE602004012885D1 (de) | 2008-05-15 |
TWI252643B (en) | 2006-04-01 |
ES2300870T3 (es) | 2008-06-16 |
CA2544960A1 (en) | 2005-05-26 |
KR100754819B1 (ko) | 2007-09-04 |
JP2007513542A (ja) | 2007-05-24 |
US6954447B2 (en) | 2005-10-11 |
KR20060103346A (ko) | 2006-09-28 |
WO2005048506A3 (en) | 2005-09-15 |
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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 |