CA2350518A1 - System and method for time of arrival positioning measurements based upon network characteristics - Google Patents
System and method for time of arrival positioning measurements based upon network characteristics Download PDFInfo
- Publication number
- CA2350518A1 CA2350518A1 CA002350518A CA2350518A CA2350518A1 CA 2350518 A1 CA2350518 A1 CA 2350518A1 CA 002350518 A CA002350518 A CA 002350518A CA 2350518 A CA2350518 A CA 2350518A CA 2350518 A1 CA2350518 A1 CA 2350518A1
- Authority
- CA
- Canada
- Prior art keywords
- mobile station
- telecommunications network
- area
- radio communication
- indication
- 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.)
- Granted
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
An improved system and method for determining a position of a mobile station in a mobile telecommunications network is disclosed. The system includes a database having geographical information pertaining to the service area of the telecommunications network, including whether service areas therein are characterized as urban areas, suburban areas or "badurban" areas in which radio communication is especially limited. The system further includes a mobile location center (MLC) which, among other things, calculates the number of access signal bursts which are required for transmission by the mobile station to be located. The access burst number is calculated based upon the geographical information pertaining to the service areas stored in the database and upon a requested position determination accuracy. By measuring the time of arrival delay of the burst signal transmission received by two or more base transceiver station, the MLC computes the position of the mobile station.
Claims (23)
1. A method for determining a position of a mobile station (3) within a mobile telecommunications network network (1), comprising the steps of:
maintaining a database (11) having stored therein geographical information pertaining to service areas within the mobile telecommunications network (1), the geographical information including an ability to perform radio communication within the service areas;
calculating a required number of access burst signals for transmission by the mobile station (3) based upon the geographical information pertaining to the service areas;
receiving the required number of access burst signals transmitted by the mobile station (3);
measuring the time of arrival of the required number of access burst signals transmitted by the mobile station (3) during the receiving step; and calculating a position of the mobile station (3) within the telecommunications network (1) based upon the time of arrival measurements of the required burst signal transmission.
maintaining a database (11) having stored therein geographical information pertaining to service areas within the mobile telecommunications network (1), the geographical information including an ability to perform radio communication within the service areas;
calculating a required number of access burst signals for transmission by the mobile station (3) based upon the geographical information pertaining to the service areas;
receiving the required number of access burst signals transmitted by the mobile station (3);
measuring the time of arrival of the required number of access burst signals transmitted by the mobile station (3) during the receiving step; and calculating a position of the mobile station (3) within the telecommunications network (1) based upon the time of arrival measurements of the required burst signal transmission.
2. The method of claim 1, further including the step of:
identifying a plurality of bast transceiver stations (9) in the telecommunications network (1) for participating in performing the mobile station(3) position determination based open the geographical information pertaining to the service areas;
wherein the identified participating base transceiver stations receive the required number of access burst signals transmitted by the mobile station (3).
identifying a plurality of bast transceiver stations (9) in the telecommunications network (1) for participating in performing the mobile station(3) position determination based open the geographical information pertaining to the service areas;
wherein the identified participating base transceiver stations receive the required number of access burst signals transmitted by the mobile station (3).
3. The method of claim 1, wherein:
the geographical service area information includes an indication whether service areas in the telecommunications network (1) are one of an urban area, suburban area and badurban area in which radio communication is limited relative to radio communication in urban areas and suburban areas.
the geographical service area information includes an indication whether service areas in the telecommunications network (1) are one of an urban area, suburban area and badurban area in which radio communication is limited relative to radio communication in urban areas and suburban areas.
4. The method of claim 1, further including the step of:
receiving a request to perform a position determination of the mobile station (3) prior to the calculating step, the request including a requested degree of accuracy for the position determination; and the calculating step calculates the required number of access bursts based upon the requested degree of positioning accuracy.
receiving a request to perform a position determination of the mobile station (3) prior to the calculating step, the request including a requested degree of accuracy for the position determination; and the calculating step calculates the required number of access bursts based upon the requested degree of positioning accuracy.
5. The method of claim 2, wherein:
the service area geographical information includes an indication of the location of time measuring units (8) associated with the base transceiver stations (9) in the telecommunications network (1); and the base transceiver station identifying step identifies the participating base transceiver stations (9) based upon the time measuring unit locations in the service area geographical information.
the service area geographical information includes an indication of the location of time measuring units (8) associated with the base transceiver stations (9) in the telecommunications network (1); and the base transceiver station identifying step identifies the participating base transceiver stations (9) based upon the time measuring unit locations in the service area geographical information.
6. The method of claim 1, further including the step of:
transmitting a message to the mobile station (3) to discontinue transmission of burst signals following the burst signal number receiving step.
transmitting a message to the mobile station (3) to discontinue transmission of burst signals following the burst signal number receiving step.
7. The method of claim 1, wherein:
the access burst signals comprise part of a cell handover operation.
the access burst signals comprise part of a cell handover operation.
8. A mobile telecommunications network (1), comprising:
a database (11) having stored therein geographical information of the cell areas which indicate an ability to perform radio communication therein;
a mobile location center (MLC) (5) for calculating a number of burst signals for transmission by a mobile station (3) to be used to determine a position thereof based upon the cell area geographical information, and for instructing the mobile station (3) to transmit the calculated number of burst signals;
wherein the MLC (5) receives measured time of arrival delays of the burst signals transmitted by the mobile station and measured by location measurement units (LMUs) in the mobile telecommunications network (1), and calculates a position of the mobile station (3) based upon the measured time of arrival delays of the burst signal transmission.
a database (11) having stored therein geographical information of the cell areas which indicate an ability to perform radio communication therein;
a mobile location center (MLC) (5) for calculating a number of burst signals for transmission by a mobile station (3) to be used to determine a position thereof based upon the cell area geographical information, and for instructing the mobile station (3) to transmit the calculated number of burst signals;
wherein the MLC (5) receives measured time of arrival delays of the burst signals transmitted by the mobile station and measured by location measurement units (LMUs) in the mobile telecommunications network (1), and calculates a position of the mobile station (3) based upon the measured time of arrival delays of the burst signal transmission.
9. The telecommunications network (1) of claim 8, wherein:
the cell area geographical database (11) information includes an indication whether cell areas in the telecommunications network (1) are an urban cell area, a suburban cell area and a badurban cell area having a reduced ability for radio communication relative to the urban cell area and the suburban cell area.
the cell area geographical database (11) information includes an indication whether cell areas in the telecommunications network (1) are an urban cell area, a suburban cell area and a badurban cell area having a reduced ability for radio communication relative to the urban cell area and the suburban cell area.
10. The telecommunications network (1) of claim 8, wherein:
the MLC (5) identifies LMUs 8 for measuring the bunt signal transmission based upon the cell arts geographical database (11) information.
the MLC (5) identifies LMUs 8 for measuring the bunt signal transmission based upon the cell arts geographical database (11) information.
11, The telecommunications network (1) of claim 8, wherein:
the MLC (5) calculates the number of burst signals based upon a predefined degree of accuracy of the mobile station (3) position determination.
the MLC (5) calculates the number of burst signals based upon a predefined degree of accuracy of the mobile station (3) position determination.
12. The telecommunications network (1) of claim 8, wherein:
the cell area geographical database (11) information includes an indication of the location of the LMUs 8 in the telecommunications network (1); and the MLC (5) identifies certain LMUs 8 for measuring the burst signal transmission based upon the LMU location indications in the cell area geographical database (11).
the cell area geographical database (11) information includes an indication of the location of the LMUs 8 in the telecommunications network (1); and the MLC (5) identifies certain LMUs 8 for measuring the burst signal transmission based upon the LMU location indications in the cell area geographical database (11).
13. The telecommunications network (1) of claim 12, wherein:
the LMUs 8 instruct the mobile station (3) to discontinue transmitting the burst signals upon the LMUs 8 receiving the calculated number of burst signals.
the LMUs 8 instruct the mobile station (3) to discontinue transmitting the burst signals upon the LMUs 8 receiving the calculated number of burst signals.
14. A method for determining a position of a mobile station (3) within a mobile telecommunications network (1), comprising the steps of:
receiving a roquet to perform a position determination of the mobile station (3), the request including a requested degree of accuracy for the position determination;
calculating a required number of access burst signals to be transmitted by the mobile station (3) based upon the requested degree of accuracy for the position determination;
receiving the required number of access burst signals transmitted by the mobile station (3);
measuring the time of arrival of the required number of access burst signals transmitted by the mobile station (3) during the receiving step; and calculating a position of the mobile station (3) within the telecommunications network (1) based upon the time of arrival measurements of the required burst signal transmission.
receiving a roquet to perform a position determination of the mobile station (3), the request including a requested degree of accuracy for the position determination;
calculating a required number of access burst signals to be transmitted by the mobile station (3) based upon the requested degree of accuracy for the position determination;
receiving the required number of access burst signals transmitted by the mobile station (3);
measuring the time of arrival of the required number of access burst signals transmitted by the mobile station (3) during the receiving step; and calculating a position of the mobile station (3) within the telecommunications network (1) based upon the time of arrival measurements of the required burst signal transmission.
15. The method of claim 14, further including the step of:
maintaining a database (11) of geographical information pertaining to cell areas within the mobile telecommunications network (1), the geographical cell area information including an indication of an ability to perform radio communication in the cell areas; and the calculating stop calculates the required number of access burst signals received from the mobile station (3) based upon the geographical cell area information.
maintaining a database (11) of geographical information pertaining to cell areas within the mobile telecommunications network (1), the geographical cell area information including an indication of an ability to perform radio communication in the cell areas; and the calculating stop calculates the required number of access burst signals received from the mobile station (3) based upon the geographical cell area information.
16. The method of claim 15, wherein:
the indication of an ability to perform radio communication within the cell areas includes an indication of whether each cell area is characterized as one of an urban cell area, a suburban cell area and a badurban cell area having a reduced ability to perform radio communication.
the indication of an ability to perform radio communication within the cell areas includes an indication of whether each cell area is characterized as one of an urban cell area, a suburban cell area and a badurban cell area having a reduced ability to perform radio communication.
17, The method of claim 15, further including the step of:
identifying one or more base transceiver stations (9) within the telecommunications network (1) for receiving the required number of access burst signals during the access burst signal receiving step, the identifying of the base transceiver stations (9) being based upon the geographical cell area information.
identifying one or more base transceiver stations (9) within the telecommunications network (1) for receiving the required number of access burst signals during the access burst signal receiving step, the identifying of the base transceiver stations (9) being based upon the geographical cell area information.
18. The method of claim 14, further including the step of:
instructing the mobile station (3) to discontinue transmitting burst signals following the burst signal receiving stop.
instructing the mobile station (3) to discontinue transmitting burst signals following the burst signal receiving stop.
19. A device for determining a position of a mobile station (3) within a mobile telecommunications system providing telecommunication services throughout a service area, comprising:
a database (11) having information pertaining to the service area, including an indication of an ability to perform radio communication therein; and a control means for calculating a number of one or more signals to be transmitted by the mobile station (3), the number being based upon the indication of the ability to perform radio communication within a portion of the service area where the mobile station (3) is located, receiving time based information corresponding to a reception of the one or more signals transmitted by the mobile station (3), and calculating a position of the mobile station (3) based upon the received signal measurement.
a database (11) having information pertaining to the service area, including an indication of an ability to perform radio communication therein; and a control means for calculating a number of one or more signals to be transmitted by the mobile station (3), the number being based upon the indication of the ability to perform radio communication within a portion of the service area where the mobile station (3) is located, receiving time based information corresponding to a reception of the one or more signals transmitted by the mobile station (3), and calculating a position of the mobile station (3) based upon the received signal measurement.
20. The device of claim 19, wherein:
the control means receives an indication of a request having been made for determining the position of the mobile station (3), including a requested degree of accuracy for the mobile station (3) position determination; and the calculated number of signals is based upon the requested degree of accuracy for the mobile station (3) position determination.
the control means receives an indication of a request having been made for determining the position of the mobile station (3), including a requested degree of accuracy for the mobile station (3) position determination; and the calculated number of signals is based upon the requested degree of accuracy for the mobile station (3) position determination.
21. The device of claim 19, wherein:
the indication of the ability to perform radio communication within the portion of the service area includes an indication whether the portion of the service area is one of an urban area, a suburban area and a badurban area having a lesser ability to perform radio communication,
the indication of the ability to perform radio communication within the portion of the service area includes an indication whether the portion of the service area is one of an urban area, a suburban area and a badurban area having a lesser ability to perform radio communication,
22. The device of claim 19, wherein:
the mobile telecommunications system includes a plurality of base transceiver stations (9); and the control means identifies one or more of the bast transceiver stations (9) for receiving the signal transmitted by the mobile station (3), the base transceiver station identification being based upon the indication of the ability to perform radio communication within the portion of the service area where the mobile station (3) is located.
the mobile telecommunications system includes a plurality of base transceiver stations (9); and the control means identifies one or more of the bast transceiver stations (9) for receiving the signal transmitted by the mobile station (3), the base transceiver station identification being based upon the indication of the ability to perform radio communication within the portion of the service area where the mobile station (3) is located.
23. The device of claim 19, wherein:
the indication of the ability to perform radio communication is based upon geographical information of the service area.
the indication of the ability to perform radio communication is based upon geographical information of the service area.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/193,309 | 1998-11-17 | ||
| US09/193,309 US6198935B1 (en) | 1998-11-17 | 1998-11-17 | System and method for time of arrival positioning measurements based upon network characteristics |
| PCT/US1999/027171 WO2000030397A1 (en) | 1998-11-17 | 1999-11-16 | System and method for time of arrival positioning measurements based upon network characteristics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2350518A1 true CA2350518A1 (en) | 2000-05-25 |
| CA2350518C CA2350518C (en) | 2011-01-11 |
Family
ID=22713095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2350518A Expired - Fee Related CA2350518C (en) | 1998-11-17 | 1999-11-16 | System and method for time of arrival positioning measurements based upon network characteristics |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6198935B1 (en) |
| AU (1) | AU1729400A (en) |
| BR (1) | BR9915428A (en) |
| CA (1) | CA2350518C (en) |
| WO (1) | WO2000030397A1 (en) |
Families Citing this family (50)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6366781B1 (en) * | 1999-07-08 | 2002-04-02 | Ericsson Inc. | System and method for time of arrival based positioning during handover |
| US6603976B1 (en) * | 1999-08-03 | 2003-08-05 | Ericsson, Inc. | Architecture for TOA positioning with LMU control functionality in BSC |
| FI110738B (en) * | 2000-05-22 | 2003-03-14 | Nokia Corp | Data transmission in a packet switched radio system implementing a subscriber terminal location service |
| US8175921B1 (en) * | 2000-05-30 | 2012-05-08 | Nokia Corporation | Location aware product placement and advertising |
| US7016331B1 (en) * | 2000-09-05 | 2006-03-21 | Cisco Technology, Inc. | Method of handoff control in an enterprise code division multiple access wireless system |
| US6658258B1 (en) * | 2000-09-29 | 2003-12-02 | Lucent Technologies Inc. | Method and apparatus for estimating the location of a mobile terminal |
| JP3461167B2 (en) | 2001-02-07 | 2003-10-27 | 株式会社日立製作所 | Position calculation method and position calculation device |
| ATE352964T1 (en) * | 2001-04-06 | 2007-02-15 | Nokia Corp | POSITION DETERMINATION METHOD AND SYSTEM |
| US6618005B2 (en) * | 2001-06-29 | 2003-09-09 | Intel Corporation | Determining wireless device locations |
| EP1405539B1 (en) * | 2001-06-29 | 2006-07-19 | Nokia Corporation | Quality based location method and system |
| US8977284B2 (en) | 2001-10-04 | 2015-03-10 | Traxcell Technologies, LLC | Machine for providing a dynamic data base of geographic location information for a plurality of wireless devices and process for making same |
| GB0124956D0 (en) * | 2001-10-17 | 2001-12-05 | Nokia Corp | Provision of location information |
| US7199709B2 (en) * | 2001-12-04 | 2007-04-03 | Arichell Technologies, Inc. | Cart fleet management system |
| KR100834616B1 (en) * | 2002-02-27 | 2008-06-02 | 삼성전자주식회사 | Method for determining ms location without gps in mobile communication system |
| KR100469416B1 (en) * | 2002-03-27 | 2005-02-02 | 엘지전자 주식회사 | Location tracing apparatus and method for mobile terminal |
| WO2004036935A1 (en) * | 2002-10-16 | 2004-04-29 | Andrew Corporation | Network overlay location system and method for air interface with frequency hopping |
| US7447236B2 (en) * | 2002-11-14 | 2008-11-04 | Siemens Aktiengesellschaft | Method and apparatus for determining an arrival time associated with a synchronization burst |
| US7289541B2 (en) * | 2002-12-04 | 2007-10-30 | Raytheon Company | Method for locating and tracking communication units in a synchronous wireless communication system |
| US7313113B1 (en) * | 2003-04-04 | 2007-12-25 | Airespace, Inc. | Dynamic transmit power configuration system for wireless network environments |
| US7342906B1 (en) | 2003-04-04 | 2008-03-11 | Airespace, Inc. | Distributed wireless network security system |
| US7346338B1 (en) | 2003-04-04 | 2008-03-18 | Airespace, Inc. | Wireless network system including integrated rogue access point detection |
| US20040214584A1 (en) * | 2003-04-22 | 2004-10-28 | Interdigital Technology Corporation | Method and system for managing cooperative positioning among wireless transmit/receive units |
| US7539169B1 (en) | 2003-06-30 | 2009-05-26 | Cisco Systems, Inc. | Directed association mechanism in wireless network environments |
| US7453840B1 (en) | 2003-06-30 | 2008-11-18 | Cisco Systems, Inc. | Containment of rogue systems in wireless network environments |
| US7212798B1 (en) | 2003-07-17 | 2007-05-01 | Cisco Technology, Inc. | Adaptive AGC in a wireless network receiver |
| US7286515B2 (en) * | 2003-07-28 | 2007-10-23 | Cisco Technology, Inc. | Method, apparatus, and software product for detecting rogue access points in a wireless network |
| US7293088B2 (en) | 2003-07-28 | 2007-11-06 | Cisco Technology, Inc. | Tag location, client location, and coverage hole location in a wireless network |
| US6990428B1 (en) * | 2003-07-28 | 2006-01-24 | Cisco Technology, Inc. | Radiolocation using path loss data |
| US7742757B2 (en) * | 2003-10-14 | 2010-06-22 | At&T Mobility Ii Llc | Location announcement for mobile devices |
| US9020539B2 (en) * | 2003-11-26 | 2015-04-28 | Qualcomm Incorporated | Method and apparatus for calculating a position estimate of a mobile station using network information |
| US7260408B2 (en) * | 2004-02-20 | 2007-08-21 | Airespace, Inc. | Wireless node location mechanism using antenna pattern diversity to enhance accuracy of location estimates |
| US7286833B2 (en) * | 2004-02-27 | 2007-10-23 | Airespace, Inc. | Selective termination of wireless connections to refresh signal information in wireless node location infrastructure |
| US7205938B2 (en) * | 2004-03-05 | 2007-04-17 | Airespace, Inc. | Wireless node location mechanism responsive to observed propagation characteristics of wireless network infrastructure signals |
| US7116988B2 (en) * | 2004-03-16 | 2006-10-03 | Airespace, Inc. | Location of wireless nodes using signal strength weighting metric |
| US7433696B2 (en) * | 2004-05-18 | 2008-10-07 | Cisco Systems, Inc. | Wireless node location mechanism featuring definition of search region to optimize location computation |
| US7286835B1 (en) * | 2004-09-10 | 2007-10-23 | Airespace, Inc. | Enhanced wireless node location using differential signal strength metric |
| US7702338B2 (en) * | 2004-09-29 | 2010-04-20 | Qualcomm Incorporated | Method for finding the location of a mobile terminal in a cellular radio system |
| US7516174B1 (en) | 2004-11-02 | 2009-04-07 | Cisco Systems, Inc. | Wireless network security mechanism including reverse network address translation |
| US7805140B2 (en) * | 2005-02-18 | 2010-09-28 | Cisco Technology, Inc. | Pre-emptive roaming mechanism allowing for enhanced QoS in wireless network environments |
| US7596376B2 (en) * | 2005-02-18 | 2009-09-29 | Cisco Technology, Inc. | Methods, apparatuses and systems facilitating client handoffs in wireless network systems |
| US7370362B2 (en) * | 2005-03-03 | 2008-05-06 | Cisco Technology, Inc. | Method and apparatus for locating rogue access point switch ports in a wireless network |
| US7821986B2 (en) * | 2006-05-31 | 2010-10-26 | Cisco Technology, Inc. | WLAN infrastructure provided directions and roaming |
| US7835749B1 (en) | 2006-10-03 | 2010-11-16 | Cisco Technology, Inc. | Location inspector in wireless networks |
| US7616555B2 (en) * | 2006-10-03 | 2009-11-10 | Cisco Technology, Inc. | Minimum variance location estimation in wireless networks |
| US7626969B2 (en) * | 2006-10-04 | 2009-12-01 | Cisco Technology, Inc. | Relative location of a wireless node in a wireless network |
| US7983667B2 (en) | 2006-10-05 | 2011-07-19 | Cisco Technology, Inc. | Radio frequency coverage map generation in wireless networks |
| US7904092B2 (en) * | 2007-01-04 | 2011-03-08 | Cisco Technology, Inc. | Locally adjusted radio frequency coverage maps in wireless networks |
| KR100896680B1 (en) * | 2007-04-13 | 2009-05-14 | 에스케이 텔레콤주식회사 | Method and System for Providing Location Measurement of Network Based to Mobile Communication Terminal by Using G-pCell Database According to Location |
| US8494823B2 (en) | 2008-03-06 | 2013-07-23 | International Business Machines Corporation | Method and system for determining service area of supply chain by simulating service cycle time |
| US20120163222A1 (en) * | 2009-08-14 | 2012-06-28 | Tariqul Islam | System and method for locating a wireless device in a wimax network using uplink signals |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995000821A1 (en) * | 1993-06-25 | 1995-01-05 | Omniplex, Inc. | Determination of location using time-synchronized cell site transmissions |
| US5512908A (en) * | 1994-07-08 | 1996-04-30 | Lockheed Sanders, Inc. | Apparatus and method for locating cellular telephones |
| US5732354A (en) * | 1995-06-07 | 1998-03-24 | At&T Wireless Services, Inc. | Method and apparatus for determining the location of a mobile telephone |
| US5883598A (en) * | 1995-12-15 | 1999-03-16 | Signatron Technology Corporation | Position location system and method |
| AU3592797A (en) * | 1996-07-01 | 1998-01-21 | Ericsson Inc. | Method and apparatus for communicating information on mobile station position within a cellular telephone network |
| KR19980021532A (en) * | 1996-09-17 | 1998-06-25 | 유기범 | How to locate MS location in CDM personal mobile communication |
| SE506759C2 (en) * | 1996-09-30 | 1998-02-09 | Ericsson Telefon Ab L M | Device and method for locating a mobile station in a cellular mobile telephone system |
| US5890068A (en) * | 1996-10-03 | 1999-03-30 | Cell-Loc Inc. | Wireless location system |
| US5946619A (en) * | 1996-11-01 | 1999-08-31 | Ericsson Inc | System and method for improved paging and location updating of mobile subscribers |
| US5983109A (en) * | 1997-02-03 | 1999-11-09 | Northern Telecom Limited | Method and apparatus for using advanced positioning systems in cellular communications networks |
| US5903844A (en) * | 1997-02-04 | 1999-05-11 | Motorola, Inc. | Method and apparatus for determining remote unit location in a communication system |
| US5987329A (en) * | 1997-07-30 | 1999-11-16 | Ericsson Inc | System and method for mobile telephone location measurement using a hybrid technique |
| US6006097A (en) * | 1997-11-24 | 1999-12-21 | Telefonaktiebolaget L M Ericsson (Publ) | Method for determining position of mobile communication terminals |
| US6009091A (en) * | 1998-03-13 | 1999-12-28 | Motorola, Inc. | Method and apparatus for mobile station location within a communication system |
-
1998
- 1998-11-17 US US09/193,309 patent/US6198935B1/en not_active Expired - Lifetime
-
1999
- 1999-11-16 CA CA2350518A patent/CA2350518C/en not_active Expired - Fee Related
- 1999-11-16 WO PCT/US1999/027171 patent/WO2000030397A1/en active Application Filing
- 1999-11-16 BR BR9915428-5A patent/BR9915428A/en not_active IP Right Cessation
- 1999-11-16 AU AU17294/00A patent/AU1729400A/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| AU1729400A (en) | 2000-06-05 |
| BR9915428A (en) | 2001-08-07 |
| WO2000030397A1 (en) | 2000-05-25 |
| CA2350518C (en) | 2011-01-11 |
| US6198935B1 (en) | 2001-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2350518A1 (en) | System and method for time of arrival positioning measurements based upon network characteristics | |
| US6061565A (en) | Mobile radio systems | |
| AU738573B2 (en) | A method for determining timing differences between radio transmitters and a radio network incorporating the same | |
| US6216002B1 (en) | Method for selecting base transceiver stations for gathering data to determine a mobile station's location in a wireless network | |
| AU716551B2 (en) | System and method of locating a mobile terminal within the service area of a cellular telecommunication system | |
| EP1005774B1 (en) | Method and system for determining the position of mobile radio terminals | |
| US6031490A (en) | Method and system for determining the position of mobile radio terminals | |
| AU755797B2 (en) | Position finding method for a mobile telephone using shortened repetitive burst | |
| US5355515A (en) | Method and apparatus for estimating initial time alignment in a cellular communications network | |
| US7366492B1 (en) | Method and system for mobile location detection using handoff information | |
| EP0932999B1 (en) | Device and method in a cellular mobile telephone system | |
| EP1229756A2 (en) | Method and apparatus for locating a mobile terminal in a cellular radio system | |
| US6654362B1 (en) | Use of location in handoff in wireless communication systems | |
| JPH11275642A (en) | Method and equipment for discriminating position of mobile communication equipment and mobile communication equipment | |
| WO1994005098A1 (en) | Method for estimating traffic density in mobile telephone networks | |
| US7231216B2 (en) | Mobile positioning using intergrated ad-hoc network | |
| AU2055299A (en) | A cellular radio system comprising at least two measuring means for locating a mobile station | |
| GB2330716A (en) | Position determination using a reference transmitter | |
| GB2316823A (en) | Loxcating cellular radio transmitter | |
| MXPA00001378A (en) | Method and system for determining the position of mobile radio terminals |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20191118 |