JP2005528621A - 系列にもとづく位置決め技法 - Google Patents
系列にもとづく位置決め技法 Download PDFInfo
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- JP2005528621A JP2005528621A JP2004509449A JP2004509449A JP2005528621A JP 2005528621 A JP2005528621 A JP 2005528621A JP 2004509449 A JP2004509449 A JP 2004509449A JP 2004509449 A JP2004509449 A JP 2004509449A JP 2005528621 A JP2005528621 A JP 2005528621A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0252—Radio frequency fingerprinting
- G01S5/02521—Radio frequency fingerprinting using a radio-map
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
1.各サンプル点がサンプル位置と該サンプル点における信号値の予測分布とから成る、複数のサンプル点に関する確率モデルを維持し、
2.各観測値が目標装置の経路に沿うそれぞれの位置qnに対応する、信号値の観測値on(n=1、2、3....)の系列を作成し、このとき、前記観測値の系列とそれぞれの位置とが間接マルコフモデルを構成し、
3.確率モデルと前記観測値の集合とにもとづいて目標装置の位置qnを評価し、このとき、前記観測値の集合が少なくとも一つの観測値on+mを含み、ここでmが正の整数である。
再帰にもとづく方法
1.初期状態確率P(q1)、
2.推移確率P(qt|qt-1)、
3.観測確率P(ot|qt)、
によって完全に決定される。
実施例
RI 高周波インタフェース
DM 取りはずしのできるメモリ
LEM 位置評価モジュール
LCM 位置計算モジュール
MCM モデル構築モジュール
PC パーソナルコンピュータ
PM 確率モデル
RN 高周波ネットワーク
T 目標装置
o 観測値
q 位置
Claims (10)
- 目標装置(T)の位置を評価する方法であって、
各サンプル点がサンプル位置と該サンプル点における信号値の予測分布とから成る、複数のサンプル点に関する確率モデル(PM)を維持し、
各観測値が目標装置の経路に沿うそれぞれの位置qnに対応する、信号値の観測値on(n=1....N)の系列(OS)を作成し、このとき、前記観測値の系列とそれぞれの位置とが間接マルコフモデルを構成する、
ことから成る方法において、
確率モデル(PM)と前記観測値の系列とにもとづいて目標装置の位置qtを評価し、このとき、前記観測値の系列が一つ以上の未来の観測値ot+mを含み、ここでmが正の整数であって、
ことを特徴とする方法。 - 前記観測値の集合が一つ以上の過去の観測値on-mを含むことを特徴とする請求項1に記載の方法。
- 一つ以上の過去の観測値の順方向再帰、
一つ以上の未来の観測値の逆方向再帰、
にもとづいて、目標装置の位置qnを評価することを特徴とする請求項2に記載の方法。 - サンプル点間の目標装置の推移確率を評価し、一部この推移確率にもとづいて目標装置の位置を評価することを特徴とする請求項1から3の中のいずれか1つに記載の方法。
- 前記推移確率を評価し、これらの確率を観測値の系列を作成する前に前記確率モデルとともに記憶することを特徴とする請求項2に記載の方法。
- 前記位置評価ステップを目標装置(T)で実行することを特徴とする請求項1から5の中のいずれか1つに記載の方法。
- 前記位置評価ステップを、目標装置が高周波ネットワーク(RN)を通じて観測値の系列を報告する定置装置で実行することを特徴とする請求項1から5の中のいずれか1つに記載の方法。
- 少なくとも一つの測定可能な信号値(x)に信号強度が含まれることを特徴とする請求項1から7の中のいずれか1つに記載の方法。
- 少なくとも一つの測定可能な信号値(x)にビット誤り率が含まれることを特徴とする請求項1から8の中のいずれか1つに記載の方法。
- 目標装置(T)の位置を評価する位置評価モジュール(LEM)であって、
各サンプル点がサンプル位置と該サンプル点における信号値の予測分布とから成る、複数のサンプル点に関する確率モデル(PM)、
各観測値が目標装置の経路に沿うそれぞれの位置qnに対応し、このとき、該観測値の系列とそれぞれの位置とが間接マルコフモデルを構成するような、信号値の観測値on(n=1....N)の系列(OS)を作成する手段、
から成るモジュールにおいて、
確率モデル(PM)と前記観測値の系列とにもとづいて目標装置の位置qtを評価し、このとき、前記観測値の系列が一つ以上の未来の観測値ot+mを含み、ここでmが正の整数であって、
から成ることを特徴とする装置。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20021043A FI113409B (fi) | 2002-05-31 | 2002-05-31 | Sekvenssiperusteinen paikannustekniikka |
PCT/FI2003/000412 WO2003102621A1 (en) | 2002-05-31 | 2003-05-27 | Sequence-based positioning technique |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005528621A true JP2005528621A (ja) | 2005-09-22 |
JP3899356B2 JP3899356B2 (ja) | 2007-03-28 |
Family
ID=8564053
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004509449A Expired - Lifetime JP3899356B2 (ja) | 2002-05-31 | 2003-05-27 | 系列にもとづく位置決め技法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US7349683B2 (ja) |
EP (1) | EP1532465A1 (ja) |
JP (1) | JP3899356B2 (ja) |
CN (1) | CN100473218C (ja) |
AU (1) | AU2003240883A1 (ja) |
FI (1) | FI113409B (ja) |
WO (1) | WO2003102621A1 (ja) |
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JP2012058248A (ja) * | 2010-09-13 | 2012-03-22 | Ricoh Co Ltd | Rfidタグの動き追跡技術 |
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-
2002
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-
2003
- 2003-05-27 WO PCT/FI2003/000412 patent/WO2003102621A1/en active Application Filing
- 2003-05-27 JP JP2004509449A patent/JP3899356B2/ja not_active Expired - Lifetime
- 2003-05-27 AU AU2003240883A patent/AU2003240883A1/en not_active Abandoned
- 2003-05-27 EP EP03730249A patent/EP1532465A1/en not_active Ceased
- 2003-05-27 CN CNB038154102A patent/CN100473218C/zh not_active Expired - Fee Related
-
2004
- 2004-11-30 US US10/999,191 patent/US7349683B2/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007058302A1 (ja) * | 2005-11-21 | 2007-05-24 | Nec Corporation | 位置推定システム、位置推定方法および位置推定用プログラム |
JPWO2007058302A1 (ja) * | 2005-11-21 | 2009-05-07 | 日本電気株式会社 | 位置推定システム、位置推定方法および位置推定用プログラム |
US7948430B2 (en) | 2005-11-21 | 2011-05-24 | Nec Corporation | Position estimating system, position estimating method, position estimating device and its program |
JP4868169B2 (ja) * | 2005-11-21 | 2012-02-01 | 日本電気株式会社 | 位置推定システム、位置推定方法および位置推定用プログラム |
JP2012058248A (ja) * | 2010-09-13 | 2012-03-22 | Ricoh Co Ltd | Rfidタグの動き追跡技術 |
Also Published As
Publication number | Publication date |
---|---|
JP3899356B2 (ja) | 2007-03-28 |
EP1532465A1 (en) | 2005-05-25 |
WO2003102621A1 (en) | 2003-12-11 |
CN1666112A (zh) | 2005-09-07 |
FI20021043A0 (fi) | 2002-05-31 |
CN100473218C (zh) | 2009-03-25 |
US20050136944A1 (en) | 2005-06-23 |
FI20021043A (fi) | 2003-12-01 |
US7349683B2 (en) | 2008-03-25 |
FI113409B (fi) | 2004-04-15 |
AU2003240883A1 (en) | 2003-12-19 |
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