BR0008496A - Método e sistema para reduzir o tempo de sincronização em um sistema de comunicação cdma sem fio - Google Patents

Método e sistema para reduzir o tempo de sincronização em um sistema de comunicação cdma sem fio

Info

Publication number
BR0008496A
BR0008496A BR0008496-4A BR0008496A BR0008496A BR 0008496 A BR0008496 A BR 0008496A BR 0008496 A BR0008496 A BR 0008496A BR 0008496 A BR0008496 A BR 0008496A
Authority
BR
Brazil
Prior art keywords
pilot
channel
sequence
identification
synchronization
Prior art date
Application number
BR0008496-4A
Other languages
English (en)
Inventor
Edward G Tiedemann Jr
Abhijit G Shanbhag
Joseph P Odenwalder
Serge Willenegger
Sandip Sarkar
Daisuke Terasawa
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 BR0008496A publication Critical patent/BR0008496A/pt

Links

Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/002—Mutual synchronization
    • 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
    • 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
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709709—Methods of preventing interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0048—Walsh
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0682—Clock or time synchronisation in a network by delay compensation, e.g. by compensation of propagation delay or variations thereof, by ranging
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

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

"MéTODO E SISTEMA PARA REDUZIR O TEMPO DE SINCRONIZAçãO EM UM SISTEMA DE COMUNICAçãO CDMA SEM FIO". Um método e um sistema para gerar canais de ligação enviada em uma estação base CDMA síncrona possuindo uma seq³ência piloto de pseudo ruído (PN) com um offset de seq³ência PN piloto. Em uma modalidade, o método inclui as etapas de gerar um canal de sincronização (302) incluindo uma mensagem de canal de sincronização; gerar um canal de identificação incluindo pelo menos o offset de seq³ência PN piloto; e ortogonalizar o canal de sincronização e o canal de identificação. O canal de identificação e o canal de sincronização são ambos transmitidos. No entanto, a estação móvel pode obter o offset do piloto PN a partir do canal de identificação rapidamente, em lugar de ter que demodular toda a mensagem do canal de sincronização. O canal de identificação pode também incluir uma indicação da fase da seq³ência PN piloto e o período da seq³ência PN piloto. Em uma modalidade, o método inclui a codificação do canal de identificação usando um código Golay.
BR0008496-4A 1999-02-26 2000-02-25 Método e sistema para reduzir o tempo de sincronização em um sistema de comunicação cdma sem fio BR0008496A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US12208999P 1999-02-26 1999-02-26
US09/435,312 US6873647B1 (en) 1999-02-26 1999-11-05 Method and system for reducing synchronization time in a CDMA wireless communication system
PCT/US2000/004800 WO2000051392A1 (en) 1999-02-26 2000-02-25 Method and system for reducing synchronization time in a cdma wireless comunication system

Publications (1)

Publication Number Publication Date
BR0008496A true BR0008496A (pt) 2002-09-24

Family

ID=26820142

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0008496-4A BR0008496A (pt) 1999-02-26 2000-02-25 Método e sistema para reduzir o tempo de sincronização em um sistema de comunicação cdma sem fio

Country Status (10)

Country Link
US (1) US6873647B1 (pt)
EP (1) EP1155591A1 (pt)
JP (1) JP2002543638A (pt)
KR (2) KR100845157B1 (pt)
CN (2) CN1501613B (pt)
AU (1) AU3502700A (pt)
BR (1) BR0008496A (pt)
CA (1) CA2364962A1 (pt)
HK (1) HK1042807B (pt)
WO (1) WO2000051392A1 (pt)

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KR100365352B1 (ko) * 2001-03-06 2002-12-18 엘지전자 주식회사 이동통신 시스템에서의 채널 인식 코드 발생 장치 및 방법
US7139580B2 (en) * 2001-04-24 2006-11-21 Qualcomm Incorporated Method and apparatus for estimating the position of a terminal based on identification codes for transmission sources
DE10124223A1 (de) * 2001-05-18 2002-11-21 Philips Corp Intellectual Pty Verfahren und Einrichtung zur Synchronisation eines Funksenders mit einem Funkempfänger
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US7292188B2 (en) * 2004-09-29 2007-11-06 Qualcomm Incorporated Apparatus and method for CDMA time pseudolite for repeater identification
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CN101292461B (zh) * 2005-08-23 2011-12-14 诺基亚公司 提供初始小区捕获和导频序列检测的装置、方法和计算机程序产品
WO2007050911A1 (en) * 2005-10-27 2007-05-03 Qualcomm Incorporated A method and apparatus for transmitting and receiving access grant block over f-ssch in wireless communication system
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CN101068127B (zh) * 2006-05-01 2010-09-08 中兴通讯股份有限公司 一种无线通讯系统中实现帧同步的方法
JP5336511B2 (ja) 2007-12-21 2013-11-06 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Ｍｂｓｆｎ ｄｏｂセルサーチ及び同期符号の生成
US8116354B2 (en) * 2008-06-13 2012-02-14 Mediatek Inc. Sync detection device and method for GNSS
US8467331B2 (en) * 2008-09-09 2013-06-18 Qualcomm Incorporated Common mode and unified frame format
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US8594244B2 (en) * 2009-04-06 2013-11-26 Mediatek Inc. Data signal phase reversal correction method and system implementing the same
US9279879B2 (en) 2009-06-26 2016-03-08 Qualcomm Incorporated Positioning in the presence of passive distributed elements
CN102237972B (zh) * 2010-04-30 2014-12-10 电信科学技术研究院 一种传输小区间偏移信息的方法及装置
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Also Published As

Publication number Publication date
EP1155591A1 (en) 2001-11-21
HK1042807B (zh) 2005-02-18
CN1148101C (zh) 2004-04-28
KR100845157B1 (ko) 2008-07-09
KR20010102045A (ko) 2001-11-15
KR20070061927A (ko) 2007-06-14
JP2002543638A (ja) 2002-12-17
CN1501613A (zh) 2004-06-02
AU3502700A (en) 2000-09-14
CN1341340A (zh) 2002-03-20
US6873647B1 (en) 2005-03-29
CN1501613B (zh) 2010-05-12
WO2000051392A1 (en) 2000-08-31
CA2364962A1 (en) 2000-08-31
KR100841576B1 (ko) 2008-06-26

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 12A ANUIDADE(S).

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2138 DE 27/12/2011.

B15K Others concerning applications: alteration of classification

Ipc: H04W 56/00 (2009.01), H04J 3/06 (2006.01), H04J 13