AU772999B2 - Improvements in downlink observed time difference measurements - Google Patents
Improvements in downlink observed time difference measurements Download PDFInfo
- Publication number
- AU772999B2 AU772999B2 AU56617/99A AU5661799A AU772999B2 AU 772999 B2 AU772999 B2 AU 772999B2 AU 56617/99 A AU56617/99 A AU 56617/99A AU 5661799 A AU5661799 A AU 5661799A AU 772999 B2 AU772999 B2 AU 772999B2
- Authority
- AU
- Australia
- Prior art keywords
- radio
- mobile communication
- communication station
- time
- information
- 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.)
- Expired
Links
- 238000005259 measurement Methods 0.000 title claims description 54
- 238000010295 mobile communication Methods 0.000 claims description 75
- 238000000034 method Methods 0.000 claims description 60
- 238000004891 communication Methods 0.000 claims description 37
- 238000012544 monitoring process Methods 0.000 claims description 19
- 230000004044 response Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000007480 spreading Effects 0.000 claims description 8
- 230000010267 cellular communication Effects 0.000 claims description 5
- 235000009917 Crataegus X brevipes Nutrition 0.000 claims 1
- 235000013204 Crataegus X haemacarpa Nutrition 0.000 claims 1
- 235000009685 Crataegus X maligna Nutrition 0.000 claims 1
- 235000009444 Crataegus X rubrocarnea Nutrition 0.000 claims 1
- 235000009486 Crataegus bullatus Nutrition 0.000 claims 1
- 235000017181 Crataegus chrysocarpa Nutrition 0.000 claims 1
- 235000009682 Crataegus limnophila Nutrition 0.000 claims 1
- 235000004423 Crataegus monogyna Nutrition 0.000 claims 1
- 240000000171 Crataegus monogyna Species 0.000 claims 1
- 235000002313 Crataegus paludosa Nutrition 0.000 claims 1
- 235000009840 Crataegus x incaedua Nutrition 0.000 claims 1
- 230000000737 periodic effect Effects 0.000 claims 1
- 238000013459 approach Methods 0.000 description 9
- 230000000875 corresponding effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 238000012937 correction Methods 0.000 description 5
- 238000012827 research and development Methods 0.000 description 5
- 238000007796 conventional method Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000012549 training Methods 0.000 description 3
- 101150080339 BTS1 gene Proteins 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000001413 cellular effect Effects 0.000 description 2
- 230000001427 coherent effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- 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
- G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
- G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
- G01S1/022—Means for monitoring or calibrating
- G01S1/026—Means for monitoring or calibrating of associated receivers
-
- 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
- G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Measurement Of Unknown Time Intervals (AREA)
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/131,150 US6490454B1 (en) | 1998-08-07 | 1998-08-07 | Downlink observed time difference measurements |
| US09/131150 | 1998-08-07 | ||
| US09/186,192 US6356763B1 (en) | 1998-08-07 | 1998-11-04 | Downlink observed time difference measurements |
| US09/186192 | 1998-11-04 | ||
| PCT/SE1999/001322 WO2000008886A1 (en) | 1998-08-07 | 1999-07-27 | Improvements in downlink observed time difference measurements |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU5661799A AU5661799A (en) | 2000-02-28 |
| AU772999B2 true AU772999B2 (en) | 2004-05-13 |
Family
ID=26829185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU56617/99A Expired AU772999B2 (en) | 1998-08-07 | 1999-07-27 | Improvements in downlink observed time difference measurements |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP1103156B1 (enExample) |
| JP (1) | JP4309587B2 (enExample) |
| CN (1) | CN1127880C (enExample) |
| AU (1) | AU772999B2 (enExample) |
| BR (1) | BR9912770B1 (enExample) |
| CA (1) | CA2338544C (enExample) |
| RU (1) | RU2225079C2 (enExample) |
| TW (1) | TW475339B (enExample) |
| WO (1) | WO2000008886A1 (enExample) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6490454B1 (en) | 1998-08-07 | 2002-12-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Downlink observed time difference measurements |
| US6665540B2 (en) * | 2001-02-02 | 2003-12-16 | Nokia Mobile Phones, Ltd. | Method and system for locating a mobile terminal in a cellular radio network |
| US7363043B2 (en) * | 2001-05-18 | 2008-04-22 | Southwest Research Institute | Passive GSM-based self-locating device |
| US6876859B2 (en) * | 2001-07-18 | 2005-04-05 | Trueposition, Inc. | Method for estimating TDOA and FDOA in a wireless location system |
| GB2392801B (en) * | 2001-11-05 | 2005-08-17 | Nokia Corp | A method for identification of base stations and for checking measurement values of an observed time difference between transmissions from base stations |
| MXPA05009609A (es) * | 2003-03-11 | 2005-11-04 | Koninkl Philips Electronics Nv | Metodo para programar periodos de servicio en la red de area local inalambrica (wlan). |
| US20070258428A1 (en) * | 2006-04-24 | 2007-11-08 | Interdigital Technology Corporation | Method and apparatus for coordinating timing in a wireless local area network |
| CN101334463B (zh) * | 2008-07-29 | 2010-05-12 | 北京航空航天大学 | Gnss导航信号模拟器中时间参数的模拟方法 |
| US8699453B2 (en) * | 2009-02-02 | 2014-04-15 | Qualcomm Incorporated | Reuse of RF receive chain for hand-in assistance |
| US8725182B2 (en) | 2009-06-19 | 2014-05-13 | Htc Corporation | Method of enhancing positioning measurement and related communication device |
| CN101806907B (zh) * | 2010-03-12 | 2012-09-05 | 清华大学 | 多站多平台体系下基于相干与非相干混合的飞行器定位法 |
| GB2539364A (en) * | 2014-10-02 | 2016-12-21 | Aeroscout Ltd | Location system |
| TWI667908B (zh) * | 2016-02-01 | 2019-08-01 | 日商日本電氣股份有限公司 | Time difference measuring device, system and method |
| SG11202008665WA (en) * | 2018-03-14 | 2020-10-29 | Locata Corp | Method and apparatus for synchronising a location network |
| IL305184A (en) * | 2023-08-14 | 2025-03-01 | Elta Systems Ltd | Self-positioning based on cellular base stations |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5508708A (en) * | 1995-05-08 | 1996-04-16 | Motorola, Inc. | Method and apparatus for location finding in a CDMA system |
| WO1996035306A1 (en) * | 1995-05-02 | 1996-11-07 | Telecom Securicor Cellular Radio Limited | Cellular radio location system |
| US5629710A (en) * | 1994-03-16 | 1997-05-13 | Fujitsu Limited | Apparatus for acquiring the position of a mobile station |
-
1999
- 1999-07-27 CN CN 99811740 patent/CN1127880C/zh not_active Expired - Lifetime
- 1999-07-27 RU RU2001106637/09A patent/RU2225079C2/ru active
- 1999-07-27 AU AU56617/99A patent/AU772999B2/en not_active Expired
- 1999-07-27 EP EP99943545A patent/EP1103156B1/en not_active Expired - Lifetime
- 1999-07-27 BR BRPI9912770-9A patent/BR9912770B1/pt active IP Right Grant
- 1999-07-27 CA CA002338544A patent/CA2338544C/en not_active Expired - Lifetime
- 1999-07-27 JP JP2000564407A patent/JP4309587B2/ja not_active Expired - Lifetime
- 1999-07-27 WO PCT/SE1999/001322 patent/WO2000008886A1/en not_active Ceased
- 1999-08-02 TW TW88113177A patent/TW475339B/zh not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5629710A (en) * | 1994-03-16 | 1997-05-13 | Fujitsu Limited | Apparatus for acquiring the position of a mobile station |
| WO1996035306A1 (en) * | 1995-05-02 | 1996-11-07 | Telecom Securicor Cellular Radio Limited | Cellular radio location system |
| US5508708A (en) * | 1995-05-08 | 1996-04-16 | Motorola, Inc. | Method and apparatus for location finding in a CDMA system |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2338544A1 (en) | 2000-02-17 |
| CA2338544C (en) | 2010-01-12 |
| WO2000008886A1 (en) | 2000-02-17 |
| RU2225079C2 (ru) | 2004-02-27 |
| BR9912770A (pt) | 2001-05-08 |
| EP1103156A1 (en) | 2001-05-30 |
| EP1103156B1 (en) | 2011-11-30 |
| TW475339B (en) | 2002-02-01 |
| BR9912770B1 (pt) | 2014-06-17 |
| AU5661799A (en) | 2000-02-28 |
| CN1322452A (zh) | 2001-11-14 |
| CN1127880C (zh) | 2003-11-12 |
| JP2002522991A (ja) | 2002-07-23 |
| JP4309587B2 (ja) | 2009-08-05 |
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| US5872774A (en) | Mobile station assisted timing synchronization in a CDMA communication system | |
| AU772999B2 (en) | Improvements in downlink observed time difference measurements | |
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| US6577615B1 (en) | Method, mobile station and base station for frequency synchronization of a mobile station in a radio communications system | |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |