JPWO2021029015A1 - - Google Patents

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Publication number
JPWO2021029015A1
JPWO2021029015A1 JP2021539746A JP2021539746A JPWO2021029015A1 JP WO2021029015 A1 JPWO2021029015 A1 JP WO2021029015A1 JP 2021539746 A JP2021539746 A JP 2021539746A JP 2021539746 A JP2021539746 A JP 2021539746A JP WO2021029015 A1 JPWO2021029015 A1 JP WO2021029015A1
Authority
JP
Japan
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.)
Granted
Application number
JP2021539746A
Other versions
JP7132536B2 (ja
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 filed Critical
Publication of JPWO2021029015A1 publication Critical patent/JPWO2021029015A1/ja
Application granted granted Critical
Publication of JP7132536B2 publication Critical patent/JP7132536B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0231—Traffic management, e.g. flow control or congestion control based on communication conditions
    • H04W28/0242—Determining whether packet losses are due to overload or to deterioration of radio communication conditions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0632—Channel quality parameters, e.g. channel quality indicator [CQI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0891—Space-time diversity
    • H04B7/0897—Space-time diversity using beamforming per multi-path, e.g. to cope with different directions of arrival [DOA] at different multi-paths
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/0284—Traffic management, e.g. flow control or congestion control detecting congestion or overload during communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
JP2021539746A 2019-08-13 2019-08-13 無線通信システム及び無線通信方法 Active JP7132536B2 (ja)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2019/031861 WO2021029015A1 (ja) 2019-08-13 2019-08-13 無線通信システム及び無線通信方法

Publications (2)

Publication Number Publication Date
JPWO2021029015A1 true JPWO2021029015A1 (ja) 2021-02-18
JP7132536B2 JP7132536B2 (ja) 2022-09-07

Family

ID=74570939

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2021539746A Active JP7132536B2 (ja) 2019-08-13 2019-08-13 無線通信システム及び無線通信方法

Country Status (3)

Country Link
US (1) US11848727B2 (ja)
JP (1) JP7132536B2 (ja)
WO (1) WO2021029015A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11750299B2 (en) * 2019-07-01 2023-09-05 Nippon Telegraph And Telephone Corporation Communication apparatus and communication method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007058270A1 (ja) * 2005-11-17 2007-05-24 Matsushita Electric Industrial Co., Ltd. マルチセル直交周波数分割多元接続システムにおけるキャリア割り当て方法
JP2007166459A (ja) * 2005-12-16 2007-06-28 Samsung Electronics Co Ltd 無線通信装置及び無線通信方式
WO2008053550A1 (en) * 2006-11-01 2008-05-08 Fujitsu Limited Wireless communication system
US20090257487A1 (en) * 2008-04-10 2009-10-15 Sony Corporation Video robustness using spatial and temporal diversity
JP2011166319A (ja) * 2010-02-05 2011-08-25 Kyocera Corp 無線通信システム、主通信装置、従通信装置、およびチャネル割当情報通知方法
JP2014132726A (ja) * 2013-01-07 2014-07-17 Nippon Telegr & Teleph Corp <Ntt> 無線通信システム
JP2018137722A (ja) * 2017-02-23 2018-08-30 日本電信電話株式会社 無線伝送方法及び無線伝送システム

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3098989B1 (en) * 2007-08-02 2019-03-06 NEC Corporation Mimo communication system having deterministic communication path and antenna arrangement method therefor
JP5672684B2 (ja) * 2009-09-29 2015-02-18 ソニー株式会社 無線伝送システム、無線通信装置、無線伝送方法
JP5585092B2 (ja) * 2009-10-22 2014-09-10 ソニー株式会社 無線伝送システム、無線通信装置
JP5404281B2 (ja) * 2009-09-28 2014-01-29 株式会社ジャパンディスプレイ 液晶表示パネル
JP6643674B2 (ja) * 2016-01-20 2020-02-12 パナソニックＩｐマネジメント株式会社 送信装置、受信装置、送信方法、および受信方法
TWI618374B (zh) * 2017-04-21 2018-03-11 國立臺灣大學 束波成型索引空間調變的方法
US10862553B1 (en) * 2019-07-12 2020-12-08 Sprint Spectrum L.P. Use of RF correlation between UEs in a MU-MIMO group as a basis to bias MCS

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007058270A1 (ja) * 2005-11-17 2007-05-24 Matsushita Electric Industrial Co., Ltd. マルチセル直交周波数分割多元接続システムにおけるキャリア割り当て方法
JP2007166459A (ja) * 2005-12-16 2007-06-28 Samsung Electronics Co Ltd 無線通信装置及び無線通信方式
WO2008053550A1 (en) * 2006-11-01 2008-05-08 Fujitsu Limited Wireless communication system
US20090257487A1 (en) * 2008-04-10 2009-10-15 Sony Corporation Video robustness using spatial and temporal diversity
JP2011166319A (ja) * 2010-02-05 2011-08-25 Kyocera Corp 無線通信システム、主通信装置、従通信装置、およびチャネル割当情報通知方法
JP2014132726A (ja) * 2013-01-07 2014-07-17 Nippon Telegr & Teleph Corp <Ntt> 無線通信システム
JP2018137722A (ja) * 2017-02-23 2018-08-30 日本電信電話株式会社 無線伝送方法及び無線伝送システム

Also Published As

Publication number Publication date
JP7132536B2 (ja) 2022-09-07
WO2021029015A1 (ja) 2021-02-18
US11848727B2 (en) 2023-12-19
US20220321182A1 (en) 2022-10-06

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