WO2009031604A1 - 電波到達状態推定システムと、その方法及びプログラム - Google Patents

電波到達状態推定システムと、その方法及びプログラム Download PDF

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Publication number
WO2009031604A1
WO2009031604A1 PCT/JP2008/065941 JP2008065941W WO2009031604A1 WO 2009031604 A1 WO2009031604 A1 WO 2009031604A1 JP 2008065941 W JP2008065941 W JP 2008065941W WO 2009031604 A1 WO2009031604 A1 WO 2009031604A1
Authority
WO
WIPO (PCT)
Prior art keywords
radio wave
estimating
reception point
arrival status
program
Prior art date
Application number
PCT/JP2008/065941
Other languages
English (en)
French (fr)
Inventor
Hiroto Sugahara
Masahiro Motoyoshi
Takashi Ono
Original Assignee
Nec Corporation
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 Nec Corporation filed Critical Nec Corporation
Priority to US12/676,567 priority Critical patent/US9002388B2/en
Priority to EP08829538.1A priority patent/EP2187534B1/en
Priority to CN2008801060591A priority patent/CN101796742B/zh
Priority to JP2009531266A priority patent/JP5234291B2/ja
Publication of WO2009031604A1 publication Critical patent/WO2009031604A1/ja

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/364—Delay profiles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/373—Predicting channel quality or other radio frequency [RF] parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/391—Modelling the propagation channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/40—Monitoring; Testing of relay systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/354—Adjacent channel leakage power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/391—Modelling the propagation channel
    • H04B17/3911—Fading models or fading generators
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/391—Modelling the propagation channel
    • H04B17/3913—Predictive models, e.g. based on neural network models
    • 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
    • H04L25/0204—Channel estimation of multiple channels

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Radio Transmission System (AREA)

Abstract

　評価する無線システムの受信点における受信電波の物理的特性が、無線システムの特性を判断するための最低限許容できるレベルに達しているか否かを推定し、物理的特性が最低限許容できるレベルに達していると推定される場合には受信点に対して第１の電波伝搬状態の推定手法を適用して受信点の電波の到達状態を推定し、最低限許容できるレベルに達していないと推定される場合には、受信点に対して第２の電波伝搬状態の推定手法を適用して受信点の電波の到達状態を推定する推定手段を有することを特徴とする電波到達状態推定システムである。    
PCT/JP2008/065941 2007-09-07 2008-09-04 電波到達状態推定システムと、その方法及びプログラム WO2009031604A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/676,567 US9002388B2 (en) 2007-09-07 2008-09-04 Radio wave arrival status estimating system, its method and program
EP08829538.1A EP2187534B1 (en) 2007-09-07 2008-09-04 Radio wave arrival status estimating system, its method and program
CN2008801060591A CN101796742B (zh) 2007-09-07 2008-09-04 电波到达状态估计系统、及其方法和程序
JP2009531266A JP5234291B2 (ja) 2007-09-07 2008-09-04 電波到達状態推定システムと、その方法及びプログラム

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007233454 2007-09-07
JP2007-233454 2007-09-07

Publications (1)

Publication Number Publication Date
WO2009031604A1 true WO2009031604A1 (ja) 2009-03-12

Family

ID=40428917

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/065941 WO2009031604A1 (ja) 2007-09-07 2008-09-04 電波到達状態推定システムと、その方法及びプログラム

Country Status (5)

Country Link
US (1) US9002388B2 (ja)
EP (1) EP2187534B1 (ja)
JP (1) JP5234291B2 (ja)
CN (1) CN101796742B (ja)
WO (1) WO2009031604A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011176743A (ja) * 2010-02-25 2011-09-08 Softbank Mobile Corp 通信品質推定システム、プログラム、および推定品質推定方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5493447B2 (ja) * 2009-04-21 2014-05-14 日本電気株式会社 電波伝搬特性推定装置及び方法並びにコンピュータプログラム
US9318799B2 (en) * 2013-03-29 2016-04-19 Broadcom Corporation Wireless communication apparatus and method for controlling antenna radiation patterns based on fading conditions
JP6767697B2 (ja) * 2018-03-12 2020-10-14 パナソニックＩｐマネジメント株式会社 電波環境解析装置および電波環境解析方法
JP6955720B2 (ja) * 2018-08-23 2021-10-27 日本電信電話株式会社 電波遮蔽損失の計算方法、計算装置およびプログラム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09153867A (ja) * 1995-11-30 1997-06-10 Fujitsu Ltd 電波伝搬シミュレータ
JP2003198442A (ja) * 2001-12-28 2003-07-11 Hitachi Ltd 多地点中継を行う無線伝送システム及びそれに使用する無線装置
WO2007043416A1 (ja) * 2005-10-05 2007-04-19 Nec Corporation 電波到達状態推定システム及び電波到達状態推定方法ならびにプログラム

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3092651B2 (ja) 1995-07-14 2000-09-25 株式会社エヌ・ティ・ティ・ドコモ 電界強度計算装置
US5974329A (en) * 1997-09-29 1999-10-26 Rutgers University Method and system for mobile location estimation
CN1173509C (zh) * 2001-12-30 2004-10-27 华为技术有限公司 Cdma移动通信系统中可视与非可视信道的识别方法
JP4207081B2 (ja) 2004-03-17 2009-01-14 日本電気株式会社 電波伝搬特性推定システム及びその方法並びにプログラム
DE102004027666B4 (de) * 2004-06-07 2006-07-27 Infineon Technologies Ag Verbesserung der Zuverlässigkeit und der Genauigkeit von Positionsbestimmungs-Verfahren durch Abschätzung des Rice-Faktors einer Funkverbindung
CN1815941A (zh) * 2005-02-04 2006-08-09 松下电器产业株式会社 多天线传输系统中的天线选择和比特分配方法及装置
GB2445385B (en) * 2006-12-29 2011-08-31 Nokia Corp Improvements in or relating to distance estimation
KR100974194B1 (ko) * 2007-03-05 2010-08-05 삼성전자주식회사 다중 입출력 무선통신 시스템에서 역호환성을 갖는 공간다중화 장치 및 방법
US8126405B2 (en) * 2009-02-10 2012-02-28 Mitsubishi Electric Research Laboratory, Inc. Method for estimating condition of wireless channels

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09153867A (ja) * 1995-11-30 1997-06-10 Fujitsu Ltd 電波伝搬シミュレータ
JP2003198442A (ja) * 2001-12-28 2003-07-11 Hitachi Ltd 多地点中継を行う無線伝送システム及びそれに使用する無線装置
WO2007043416A1 (ja) * 2005-10-05 2007-04-19 Nec Corporation 電波到達状態推定システム及び電波到達状態推定方法ならびにプログラム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011176743A (ja) * 2010-02-25 2011-09-08 Softbank Mobile Corp 通信品質推定システム、プログラム、および推定品質推定方法

Also Published As

Publication number Publication date
US9002388B2 (en) 2015-04-07
EP2187534B1 (en) 2019-03-06
JPWO2009031604A1 (ja) 2010-12-16
US20100255803A1 (en) 2010-10-07
JP5234291B2 (ja) 2013-07-10
EP2187534A4 (en) 2014-05-21
CN101796742B (zh) 2013-07-24
EP2187534A1 (en) 2010-05-19
CN101796742A (zh) 2010-08-04

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