WO2007124451A3 - Downlink synchronization channel and methods for cellular systems - Google Patents
Downlink synchronization channel and methods for cellular systems Download PDFInfo
- Publication number
- WO2007124451A3 WO2007124451A3 PCT/US2007/067137 US2007067137W WO2007124451A3 WO 2007124451 A3 WO2007124451 A3 WO 2007124451A3 US 2007067137 W US2007067137 W US 2007067137W WO 2007124451 A3 WO2007124451 A3 WO 2007124451A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- primary
- downlink synchronization
- synchronization signal
- provides
- cellular downlink
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
-
- 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
- H04B7/155—Ground-based stations
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0069—Cell search, i.e. determining cell identity [cell-ID]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Databases & Information Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention provides a method of operating a base station transmitter. The method includes providing a cellular downlink synchronization signal having primary and secondary portions, wherein the primary portion employs a corresponding one of a plurality of different primary signals allocated to adjoining transmission cells. The method also includes further providing cell- specific information in the secondary portion and transmitting the cellular downlink synchronization signal. In one embodiment, the primary portion explicitly indicates a partial cell identification information and the remaining cell identification information is carried in the secondary portion. In another embodiment, the plurality of different primary signals are simply used to avoid the channel mismatch effect. The present invention also provides a method of operating user equipment. The method includes receiving a cellular downlink synchronization signal having primary and secondary portions wherein the timing acquisition is performed in conjunction with the primary synchronization sequence index detection via the primary portion. In addition, the secondary portion provides cell- specific parameters and identifying and extracting the secondary portion.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07761055.8A EP2014116A4 (en) | 2006-04-20 | 2007-04-20 | Downlink synchronization channel and methods for cellular systems |
KR1020087028289A KR101055895B1 (en) | 2006-04-20 | 2007-04-20 | Base station transmitter, user equipment receiver, method of operating base station transmitter, method of operating user equipment receiver and method of operating cellular communication network |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US74525006P | 2006-04-20 | 2006-04-20 | |
US60/745,250 | 2006-04-20 | ||
US11/737,554 | 2007-04-19 | ||
US11/737,554 US8031745B2 (en) | 2006-04-20 | 2007-04-19 | Downlink synchronization channel and methods for cellular systems |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2007124451A2 WO2007124451A2 (en) | 2007-11-01 |
WO2007124451A8 WO2007124451A8 (en) | 2008-10-23 |
WO2007124451A3 true WO2007124451A3 (en) | 2008-12-11 |
Family
ID=38625782
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/067137 WO2007124451A2 (en) | 2006-04-20 | 2007-04-20 | Downlink synchronization channel and methods for cellular systems |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2014116A4 (en) |
KR (1) | KR101055895B1 (en) |
CN (2) | CN106304318B (en) |
WO (1) | WO2007124451A2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8223625B2 (en) * | 2006-08-23 | 2012-07-17 | Qualcomm, Incorporated | Acquisition in frequency division multiple access systems |
US7965797B2 (en) | 2007-11-01 | 2011-06-21 | Texas Instruments Incorporated | Method, system and apparatus for generating constant amplitude zero autocorrelation sequences |
WO2009098960A1 (en) * | 2008-02-04 | 2009-08-13 | Sharp Kabushiki Kaisha | Mobile communication system, base station device, mobile station device, and mobile communication method |
CN106612502B (en) * | 2015-10-22 | 2019-11-12 | 普天信息技术有限公司 | A kind of acquisition methods and system of Physical Cell Identifier PCI |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5930366A (en) * | 1997-08-29 | 1999-07-27 | Telefonaktiebolaget L M Ericsson | Synchronization to a base station and code acquisition within a spread spectrum communication system |
US20020075833A1 (en) * | 2000-08-04 | 2002-06-20 | Interdigital Technology Corporation | Periodic cell search |
US6717930B1 (en) * | 2000-05-22 | 2004-04-06 | Interdigital Technology Corporation | Cell search procedure for time division duplex communication systems using code division multiple access |
US6894995B2 (en) * | 2001-06-22 | 2005-05-17 | Interdigital Technology Corporation | Apparatus and method for performing initial cell search in wireless communication systems |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19916063C1 (en) * | 1999-04-09 | 2000-07-13 | Siemens Ag | Synchronising method for radio communication system |
US6385264B1 (en) * | 1999-06-08 | 2002-05-07 | Qualcomm Incorporated | Method and apparatus for mitigating interference between base stations in a wideband CDMA system |
ATE334561T1 (en) * | 2000-05-10 | 2006-08-15 | Mitsubishi Electric Inf Tech | METHOD FOR ASSIGNING SECONDARY SYNCHRONIZATION CODES TO A BASE STATION OF A MOBILE COMMUNICATIONS SYSTEM |
JP3394530B2 (en) * | 2001-08-07 | 2003-04-07 | 松下電器産業株式会社 | Cell search apparatus and cell search method |
US6847630B2 (en) * | 2001-11-09 | 2005-01-25 | Qualcomm, Incorporated | Communications in an asynchronous cellular wireless network |
KR20050076886A (en) * | 2004-01-26 | 2005-07-29 | 삼성전자주식회사 | A method and apparatus of common channel beacon for inter-fa hard handover in w-cdma network |
-
2007
- 2007-04-20 KR KR1020087028289A patent/KR101055895B1/en active IP Right Grant
- 2007-04-20 WO PCT/US2007/067137 patent/WO2007124451A2/en active Application Filing
- 2007-04-20 CN CN201610875425.6A patent/CN106304318B/en active Active
- 2007-04-20 CN CN201410108050.1A patent/CN103874188B/en active Active
- 2007-04-20 EP EP07761055.8A patent/EP2014116A4/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5930366A (en) * | 1997-08-29 | 1999-07-27 | Telefonaktiebolaget L M Ericsson | Synchronization to a base station and code acquisition within a spread spectrum communication system |
US6717930B1 (en) * | 2000-05-22 | 2004-04-06 | Interdigital Technology Corporation | Cell search procedure for time division duplex communication systems using code division multiple access |
US20020075833A1 (en) * | 2000-08-04 | 2002-06-20 | Interdigital Technology Corporation | Periodic cell search |
US6894995B2 (en) * | 2001-06-22 | 2005-05-17 | Interdigital Technology Corporation | Apparatus and method for performing initial cell search in wireless communication systems |
Also Published As
Publication number | Publication date |
---|---|
KR20090008375A (en) | 2009-01-21 |
WO2007124451A8 (en) | 2008-10-23 |
EP2014116A4 (en) | 2013-10-09 |
EP2014116A2 (en) | 2009-01-14 |
WO2007124451A2 (en) | 2007-11-01 |
CN106304318B (en) | 2020-02-11 |
CN103874188A (en) | 2014-06-18 |
KR101055895B1 (en) | 2011-08-09 |
CN106304318A (en) | 2017-01-04 |
CN103874188B (en) | 2018-03-09 |
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