WO2004066532A8 - Implement method and apparatus for downlink synchronization subsystem - Google Patents

Implement method and apparatus for downlink synchronization subsystem

Info

Publication number
WO2004066532A8
WO2004066532A8 PCT/CN2003/000061 CN0300061W WO2004066532A8 WO 2004066532 A8 WO2004066532 A8 WO 2004066532A8 CN 0300061 W CN0300061 W CN 0300061W WO 2004066532 A8 WO2004066532 A8 WO 2004066532A8
Authority
WO
WIPO (PCT)
Prior art keywords
downlink synchronization
frequency
implement method
synchronization subsystem
frequency tracking
Prior art date
Application number
PCT/CN2003/000061
Other languages
French (fr)
Chinese (zh)
Other versions
WO2004066532A1 (en
Inventor
Li Fang
Chen Ji
Jingbo Liu
Yongsheng Zhang
Original Assignee
Linkair Comm Inc
Li Fang
Chen Ji
Jingbo Liu
Yongsheng Zhang
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 Linkair Comm Inc, Li Fang, Chen Ji, Jingbo Liu, Yongsheng Zhang filed Critical Linkair Comm Inc
Priority to AU2003211659A priority Critical patent/AU2003211659A1/en
Priority to CN03805483.3A priority patent/CN1640041A/en
Priority to PCT/CN2003/000061 priority patent/WO2004066532A1/en
Publication of WO2004066532A1 publication Critical patent/WO2004066532A1/en
Publication of WO2004066532A8 publication Critical patent/WO2004066532A8/en

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
    • H04B1/70735—Code identification
    • 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
    • H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • 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
    • H04B1/7083—Cell search, e.g. using a three-step approach
    • 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
    • H04B2201/70702—Intercell-related aspects

Landscapes

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

Abstract

The present invention relates to an implement method and apparatus for downlink synchronization subsystem, which can detect the boundary of initial frame, and the initial frequency can be catched by using the result of initial frame boundary detection, Then, it can carry the cell search and selection, the multipath signal searching and tracing, the carrier frequency tracking, and timing frequency tracking, In CDMA system, by implementing the frequency catching, downlink synchronization acquisition and cell identification, providing multipath information of traffic channel, and running the carrier frequency tracking, the present invention can ensure the accuracy of timing frequency, and have the characteristic of simplicity and utility.
PCT/CN2003/000061 2003-01-23 2003-01-23 Implement method and apparatus for downlink synchronization subsystem WO2004066532A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU2003211659A AU2003211659A1 (en) 2003-01-23 2003-01-23 Implement method and apparatus for downlink synchronization subsystem
CN03805483.3A CN1640041A (en) 2003-01-23 2003-01-23 Implement method and apparatus for downlink synchronization subsystem
PCT/CN2003/000061 WO2004066532A1 (en) 2003-01-23 2003-01-23 Implement method and apparatus for downlink synchronization subsystem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2003/000061 WO2004066532A1 (en) 2003-01-23 2003-01-23 Implement method and apparatus for downlink synchronization subsystem

Publications (2)

Publication Number Publication Date
WO2004066532A1 WO2004066532A1 (en) 2004-08-05
WO2004066532A8 true WO2004066532A8 (en) 2004-09-30

Family

ID=32739358

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2003/000061 WO2004066532A1 (en) 2003-01-23 2003-01-23 Implement method and apparatus for downlink synchronization subsystem

Country Status (3)

Country Link
CN (1) CN1640041A (en)
AU (1) AU2003211659A1 (en)
WO (1) WO2004066532A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6005854A (en) * 1997-08-08 1999-12-21 Cwill Telecommunication, Inc. Synchronous wireless access protocol method and apparatus
CN1047047C (en) * 1997-10-05 1999-12-01 北京信威通信技术有限公司 Method for establishing and holding synchronous code division multiple access communication chain
CN1131653C (en) * 2000-03-27 2003-12-17 信息产业部电信科学技术研究院 Small-region initial search method for CDMA digital mobile communication system
CN1174559C (en) * 2000-06-05 2004-11-03 连宇通信有限公司 Framing method are synchronous wireless system therewith
WO2002011317A1 (en) * 2000-06-20 2002-02-07 Linkair Communications, Inc. A tdd framing method for physical layer of a wireless system
JP3729329B2 (en) * 2000-09-19 2005-12-21 株式会社エヌ・ティ・ティ・ドコモ Cell search method for mobile station in mobile communication system and mobile station in mobile communication system

Also Published As

Publication number Publication date
AU2003211659A1 (en) 2004-08-13
CN1640041A (en) 2005-07-13
WO2004066532A1 (en) 2004-08-05

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