WO2009072171A1 - Ofdm communication method and ofdm communication device - Google Patents

Ofdm communication method and ofdm communication device Download PDF

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Publication number
WO2009072171A1
WO2009072171A1 PCT/JP2007/073305 JP2007073305W WO2009072171A1 WO 2009072171 A1 WO2009072171 A1 WO 2009072171A1 JP 2007073305 W JP2007073305 W JP 2007073305W WO 2009072171 A1 WO2009072171 A1 WO 2009072171A1
Authority
WO
WIPO (PCT)
Prior art keywords
ofdm communication
group
cyclic prefix
symbol
communication
Prior art date
Application number
PCT/JP2007/073305
Other languages
French (fr)
Japanese (ja)
Inventor
Seiji Hamada
Original Assignee
Fujitsu Limited
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 Fujitsu Limited filed Critical Fujitsu Limited
Priority to PCT/JP2007/073305 priority Critical patent/WO2009072171A1/en
Publication of WO2009072171A1 publication Critical patent/WO2009072171A1/en

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Classifications

    • 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

Abstract

In OFDM communication of a base station for adding a cyclic prefix to a symbol consisting of a predetermined number of sub-carrier signal components to transmit it to mobile stations, the mobile stations are grouped based on their communication environments, and scheduling is performed for selecting a mobile station to be a target of the communication for each group. A CP length of the cyclic prefix to be added to the symbol of a group with poor communication environments is lengthened (Long-CP), and the length of the cyclic prefix to be added to the symbol for a group with good communication environments is shortened (Short-CP).
PCT/JP2007/073305 2007-12-03 2007-12-03 Ofdm communication method and ofdm communication device WO2009072171A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/073305 WO2009072171A1 (en) 2007-12-03 2007-12-03 Ofdm communication method and ofdm communication device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2007/073305 WO2009072171A1 (en) 2007-12-03 2007-12-03 Ofdm communication method and ofdm communication device

Publications (1)

Publication Number Publication Date
WO2009072171A1 true WO2009072171A1 (en) 2009-06-11

Family

ID=40717357

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/073305 WO2009072171A1 (en) 2007-12-03 2007-12-03 Ofdm communication method and ofdm communication device

Country Status (1)

Country Link
WO (1) WO2009072171A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012024913A1 (en) * 2010-08-26 2012-03-01 中兴通讯股份有限公司 Method, apparatus and system for transmitting, receiving and delivering data
WO2016078524A1 (en) * 2014-11-20 2016-05-26 Huawei Technologies Co., Ltd. System and method for setting cyclic prefix length
WO2017022422A1 (en) * 2015-08-04 2017-02-09 三菱電機株式会社 Wireless communication system, base station, and wireless communication method
WO2017147021A1 (en) * 2016-02-23 2017-08-31 Qualcomm Incorporated Dynamic cyclic prefix (cp) length
US10135652B2 (en) 2013-10-24 2018-11-20 Futurewei Technologies, Inc. System and method for setting cyclic prefix length
JP2018207538A (en) * 2014-10-01 2018-12-27 クアルコム，インコーポレイテッド Beamforming configuration scheme
EP3490314A4 (en) * 2016-07-22 2020-03-11 LG Electronics Inc. -1- Method and device for transmitting uplink
US10999836B2 (en) 2015-03-31 2021-05-04 Nec Corporation Base station, terminal, radio communication system, radio communication method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002077093A (en) * 2000-08-29 2002-03-15 Matsushita Electric Ind Co Ltd Base station unit and wireless communication method
JP2006324728A (en) * 2005-05-17 2006-11-30 Matsushita Electric Ind Co Ltd Multicarrier communication apparatus and multicarrier communication method
JP2006352786A (en) * 2005-06-20 2006-12-28 Sharp Corp Ofdm radio communication system, base station device, and terminal device
JP2007074159A (en) * 2005-09-05 2007-03-22 Sharp Corp Communications apparatus, communication method, wireless communications system and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002077093A (en) * 2000-08-29 2002-03-15 Matsushita Electric Ind Co Ltd Base station unit and wireless communication method
JP2006324728A (en) * 2005-05-17 2006-11-30 Matsushita Electric Ind Co Ltd Multicarrier communication apparatus and multicarrier communication method
JP2006352786A (en) * 2005-06-20 2006-12-28 Sharp Corp Ofdm radio communication system, base station device, and terminal device
JP2007074159A (en) * 2005-09-05 2007-03-22 Sharp Corp Communications apparatus, communication method, wireless communications system and method

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102387101A (en) * 2010-08-26 2012-03-21 中兴通讯股份有限公司 Method, device and system for data sending, receiving and transmitting
WO2012024913A1 (en) * 2010-08-26 2012-03-01 中兴通讯股份有限公司 Method, apparatus and system for transmitting, receiving and delivering data
US10135652B2 (en) 2013-10-24 2018-11-20 Futurewei Technologies, Inc. System and method for setting cyclic prefix length
US10623077B2 (en) 2014-10-01 2020-04-14 Qualcomm Incorporated Wireless communication using different types of cyclic prefixes
JP2018207538A (en) * 2014-10-01 2018-12-27 クアルコム，インコーポレイテッド Beamforming configuration scheme
WO2016078524A1 (en) * 2014-11-20 2016-05-26 Huawei Technologies Co., Ltd. System and method for setting cyclic prefix length
US11290315B2 (en) 2014-11-20 2022-03-29 Futurewei Technologies, Inc. System and method for setting cyclic prefix length
US10749724B2 (en) 2014-11-20 2020-08-18 Futurewei Technologies, Inc. System and method for setting cyclic prefix length
US11877267B2 (en) 2015-03-31 2024-01-16 Nec Corporation Base station, terminal, radio communication system, radio communication method
US10999836B2 (en) 2015-03-31 2021-05-04 Nec Corporation Base station, terminal, radio communication system, radio communication method
WO2017022422A1 (en) * 2015-08-04 2017-02-09 三菱電機株式会社 Wireless communication system, base station, and wireless communication method
WO2017147021A1 (en) * 2016-02-23 2017-08-31 Qualcomm Incorporated Dynamic cyclic prefix (cp) length
US10411928B2 (en) 2016-02-23 2019-09-10 Qualcomm Incorporated Dynamic cyclic prefix (CP) length
EP3713179A1 (en) * 2016-02-23 2020-09-23 QUALCOMM Incorporated Dynamic cyclic prefix (cp) length
EP3490314A4 (en) * 2016-07-22 2020-03-11 LG Electronics Inc. -1- Method and device for transmitting uplink
US10827447B2 (en) 2016-07-22 2020-11-03 Lg Electronics Inc. Method and device for transmitting uplink

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