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WO2005053198A3 - Method for allocating pilot subcarriers, method and device for transmitting and receiving pilot subcarriers in orthogonal frequency division multiplex system - Google Patents

Method for allocating pilot subcarriers, method and device for transmitting and receiving pilot subcarriers in orthogonal frequency division multiplex system Download PDF

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Publication number
WO2005053198A3
WO2005053198A3 PCT/KR2004/001836 KR2004001836W WO2005053198A3 WO 2005053198 A3 WO2005053198 A3 WO 2005053198A3 KR 2004001836 W KR2004001836 W KR 2004001836W WO 2005053198 A3 WO2005053198 A3 WO 2005053198A3
Authority
WO
WIPO (PCT)
Prior art keywords
pilot subcarriers
subcarriers
pilots
allocating
transmitting
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2004/001836
Other languages
French (fr)
Other versions
WO2005053198A2 (en
Inventor
Yu-Ro Lee
Choong-Il Yeh
Hyoung-Soo Lim
Jong-Ee Oh
Dong-Seung Kwon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electronics and Telecommunications Research Institute ETRI
Samsung Electronics Co Ltd
SK Telecom Co Ltd
KT Corp
KTFreetel Co Ltd
SK Broadband Co Ltd
Original Assignee
Electronics and Telecommunications Research Institute ETRI
Samsung Electronics Co Ltd
SK Telecom Co Ltd
KT Corp
KTFreetel Co Ltd
Hanaro Telecom 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 Electronics and Telecommunications Research Institute ETRI, Samsung Electronics Co Ltd, SK Telecom Co Ltd, KT Corp, KTFreetel Co Ltd, Hanaro Telecom Inc filed Critical Electronics and Telecommunications Research Institute ETRI
Publication of WO2005053198A2 publication Critical patent/WO2005053198A2/en
Anticipated expiration legal-status Critical
Publication of WO2005053198A3 publication Critical patent/WO2005053198A3/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding 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
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2628—Inverse Fourier transform modulators, e.g. inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators
    • 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) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

Disclosed is a method for allocating pilot subcarriers, and a method and device for transmitting and receiving pilot subcarriers in an OFDMA system. The method for allocating pilot subcarriers partitions the total bandwidth of the downlink channel into subcarrier groups having a predetermined number of subcarriers, allocates pilots to the subcarriers of the subcarrier group according to specific pilot patterns, and cycles positions of the inter-cell pilots within a specific group by a specific cycle to exchange the determined pilots according to a predetermined reference. Accordingly, pilot collision is reduced to improve accuracy of channel estimation, a number of distinguishable pilots is increased to easily perform cell planning, and a system is deployed without special cell planning.
PCT/KR2004/001836 2003-11-28 2004-07-22 Method for allocating pilot subcarriers, method and device for transmitting and receiving pilot subcarriers in orthogonal frequency division multiplex system Ceased WO2005053198A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0085530 2003-11-28
KR1020030085530A KR100600672B1 (en) 2003-11-28 2003-11-28 Pilot subcarrier allocation method and transmission method and apparatus therefor, or receiving method and apparatus in orthogonal frequency division multiple access system

Publications (2)

Publication Number Publication Date
WO2005053198A2 WO2005053198A2 (en) 2005-06-09
WO2005053198A3 true WO2005053198A3 (en) 2007-12-06

Family

ID=34632035

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/001836 Ceased WO2005053198A2 (en) 2003-11-28 2004-07-22 Method for allocating pilot subcarriers, method and device for transmitting and receiving pilot subcarriers in orthogonal frequency division multiplex system

Country Status (2)

Country Link
KR (1) KR100600672B1 (en)
WO (1) WO2005053198A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8582605B2 (en) 2008-02-01 2013-11-12 Zte Corporation Method and device for mapping the initial location of downlink pilot

Families Citing this family (30)

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KR101137329B1 (en) 2005-06-15 2012-04-19 엘지전자 주식회사 Method and apparatus for allocating subcarriers in OFDMA
KR100981552B1 (en) 2005-06-21 2010-09-10 삼성전자주식회사 Device and method for transmitting / receiving uplink pilot in frequency division multiple access system
KR100653282B1 (en) * 2005-07-27 2006-12-01 한국전자통신연구원 Training Signal Sequence Transmission Method for Channel Estimation in Orthogonal Frequency Division Multiplexed Cellular Systems
US7903628B2 (en) 2005-08-22 2011-03-08 Qualcomm Incorporated Configurable pilots in a wireless communication system
KR101203869B1 (en) * 2006-03-09 2012-11-21 엘지전자 주식회사 Multi-carrier transmission method to support differant bandwidth capability terminals
JP4899555B2 (en) * 2006-03-17 2012-03-21 富士通株式会社 Wireless communication system, transmitting apparatus and receiving apparatus
KR101227491B1 (en) * 2006-03-20 2013-01-29 엘지전자 주식회사 Method of retransmitting packets and packet recovery in mobile communications system
US7903691B2 (en) * 2006-04-24 2011-03-08 Electronics And Telecommunications Research Institute Method of generating pilot pattern for adaptive channel estimation in OFDMA systems, method of transmitting/receiving using the pilot pattern and apparatus thereof
JP2007329588A (en) * 2006-06-06 2007-12-20 Fujitsu Ltd Transmitter and transmission method
JP4793569B2 (en) * 2006-06-19 2011-10-12 日本電気株式会社 Bandwidth allocation method and radio communication system
US8457064B2 (en) 2007-03-21 2013-06-04 Qualcomm Incorporated Methods and apparatus for RF handoff in a multi-frequency network
US8948757B2 (en) 2007-03-21 2015-02-03 Qualcomm Incorporated Methods and apparatus for RF handoff in a multi-frequency network
US8737353B2 (en) 2007-03-21 2014-05-27 Qualcomm Incorporated Methods and apparatus for RF handoff in a multi-frequency network
US8737350B2 (en) 2007-03-21 2014-05-27 Qualcomm Incorporated Methods and apparatus for RF handoff in a multi-frequency network
US8750248B2 (en) 2007-03-21 2014-06-10 Qualcomm Incorporated Methods and apparatus for RF handoff in a multi-frequency network
US8565799B2 (en) 2007-04-04 2013-10-22 Qualcomm Incorporated Methods and apparatus for flow data acquisition in a multi-frequency network
US8571553B2 (en) * 2007-07-16 2013-10-29 Qualcomm Incorporated Methods and apparatus for resolving pilot pseudorandom noise code conflicts in a communication system
US8570939B2 (en) 2008-03-07 2013-10-29 Qualcomm Incorporated Methods and systems for choosing cyclic delays in multiple antenna OFDM systems
US20100227612A1 (en) * 2009-03-09 2010-09-09 Qualcomm Incorporated Cell detection for mobile location with grouping diversity
CN102244631B (en) * 2010-05-11 2014-12-17 华为技术有限公司 Central subcarrier configuring method and device
GB2496383A (en) 2011-11-07 2013-05-15 Nec Corp Extension carriers having synchronisation signals with configurable locations
US9774481B2 (en) * 2012-04-05 2017-09-26 Qualcomm, Incorporated Systems and methods for transmitting pilot tones
US9271241B2 (en) 2013-11-19 2016-02-23 Intel IP Corporation Access point and methods for distinguishing HEW physical layer packets with backwards compatibility
EP3072344A4 (en) 2013-11-19 2017-08-02 Intel IP Corporation Method, apparatus, and computer readable medium for multi-user scheduling in wireless local-area networks
BR112016008789B1 (en) 2013-11-19 2022-12-27 SOLiD, INC MAIN STATION CONFIGURED FOR HIGH-EFFICIENCY WIRELESS LOCAL AREA NETWORK COMMUNICATION, METHOD PERFORMED BY A MAIN STATION, STORAGE MEDIA AND HIGH-EFFICIENCY WIRELESS LOCAL AREA NETWORK STATION
US9325463B2 (en) 2013-11-19 2016-04-26 Intel IP Corporation High-efficiency WLAN (HEW) master station and methods to increase information bits for HEW communication
US9544914B2 (en) 2013-11-19 2017-01-10 Intel IP Corporation Master station and method for HEW communication using a transmission signaling structure for a HEW signal field
US20150327121A1 (en) 2014-05-08 2015-11-12 Guoqing C. Li Method, apparatus, and computer readable media for acknowledgement in wireless networks
US20170201359A1 (en) * 2014-07-18 2017-07-13 Intel IP Corporation Method, apparatus, and computer readable medium for transmitting pilots in wireless local area networks
WO2021237523A1 (en) * 2020-05-27 2021-12-02 华为技术有限公司 Communication method and communication device

Citations (2)

* Cited by examiner, † Cited by third party
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WO2002049305A2 (en) * 2000-12-15 2002-06-20 Broadstorm Telecommunications, Inc. Ofdma with adaptive subcarrier-cluster configuration and selective loading
US20030174643A1 (en) * 2002-03-16 2003-09-18 Samsung Electronics Co., Ltd. Method and apparatus for allocating a pilot carrier adaptively in an orthogonal frequency division multiple access system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002049305A2 (en) * 2000-12-15 2002-06-20 Broadstorm Telecommunications, Inc. Ofdma with adaptive subcarrier-cluster configuration and selective loading
US20030174643A1 (en) * 2002-03-16 2003-09-18 Samsung Electronics Co., Ltd. Method and apparatus for allocating a pilot carrier adaptively in an orthogonal frequency division multiple access system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8582605B2 (en) 2008-02-01 2013-11-12 Zte Corporation Method and device for mapping the initial location of downlink pilot

Also Published As

Publication number Publication date
KR20050051865A (en) 2005-06-02
WO2005053198A2 (en) 2005-06-09
KR100600672B1 (en) 2006-07-13

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