WO2005081796A2 - Multi-network location services support - Google Patents
Multi-network location services support Download PDFInfo
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- WO2005081796A2 WO2005081796A2 PCT/US2005/003920 US2005003920W WO2005081796A2 WO 2005081796 A2 WO2005081796 A2 WO 2005081796A2 US 2005003920 W US2005003920 W US 2005003920W WO 2005081796 A2 WO2005081796 A2 WO 2005081796A2
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- WIPO (PCT)
- Prior art keywords
- network
- wtru
- location
- data
- diverse
- Prior art date
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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
Definitions
- the present invention relates to wireless communication and to providing location data concerning mobile communication units, such as for emergency services number call locating.
- a wireless transmit/receive unit includes but is not limited to a user equipment, mobile station, fixed or mobile subscriber unit, pager, or any other type of device capable of operating in a wireless environment.
- a base station includes but is not limited to a Node B, site controller, access point or any other type of interfacing device in a wireless environment.
- These exemplary types of wireless environments include, but are not limited to, wireless local area networks (WLANs) and public land mobile networks.
- WLANs wireless local area networks
- Portable WTRUs include cellular telephones, cellular telephones with data capability, wireless modems, as well as other devices.
- Wireless communication networks are generally controlled with respect to their radio interface or controlled through a larger network.
- control of the radio interface is integrated with a cellular network control function.
- the cellular network control function is effected directly through a cellular network controller or by the cellular network controller through a local unit.
- the local unit may be a base station or a subsidiary controller such as a Node B.
- access points are controlled with respect to their radio interface locally.
- UMTS radio network controller
- the radio network controller function is effected directly through a radio network controller (RNC) or by the RNC through a local unit such as a Node B.
- RNC radio network controller
- APs access points
- wireless communication networks provide communications directly through a network controlled by the carrier.
- APs provide communications either connected through the carrier or directly with a separate network.
- an AP may provide a connection with a TCP/IP internet connection.
- an AP may establish a TCP/IP internet connection thorough a connection routed through the carrier. It is understood, however, that cellular communication can be carried on a wireless local area network (WLAN) through an AP and TCP/IP communication may be carried through a cellular network.
- WLAN wireless local area network
- Obtaining location data for a WTRU beyond that provided by a determination of a localized radio reception area is useful for a number of reasons, such as providing emergency services and providing consumer directional assistance.
- Emergency services callers dial a police emergency number, whereupon emergency services are dispatched to the caller's location. This is accessed by using an emergency services number or universal emergency telephone number, such as "999" (UK), "911" (North America), “102” (Europe), etc.
- ALI Automatic Location Identification
- ALI is unable to accurately determine the location of a WTRU, most notably when a GPS enabled WTRU is unable to acquire the GPS satellites.
- metallization of a building will create a Faraday enclosure for GPS reception.
- ALI data may not be available.
- GPS is intended to describe GPS, as well as other wide area radio geolocation systems, such as GLONASS, Omega, Loran, etc.
- GPS location Another factor in the use of GPS location is that some WTRUs would normally be made without a GPS function. By way of example, WTRUs used to transfer data but not voice would normally be produced without a geolocation capability.
- WTRUs used to transfer data but not voice would normally be produced without a geolocation capability.
- the availability of "hot spot" access points and other diverse communications networks often coincides with circumstances where ALI data is difficult to obtain. By way of example, "hot spot" access points are often available to users inside buildings. In another example, a user may be able to confirm generalized location near a base station but require communications through a diverse network.
- a "hot spot” may be, for example, an access point meeting
- IEEE 802.11 standards or similar communications standards can be considered to be a WLAN or 802.11 access point.
- An 802.11 access point provides primary control of the air interface, and establishes a connection with an external communication network substantially independently of the air interface.
- the external communication network is an internet connection or is used to access an internet connection. While the internet connection can be established through the access point's wireless connection, for example through another access point, the external connection is ultimately established beyond the air interface of the access point.
- the 802.11 connection is typically not interconnected with a cellular network controller for the purpose of establishing radio connections. In this sense, a wireless connection of a WTRU to an access point is through a network external to the access point.
- ALI data is combined with a database of "hot spot” locations in order to provide WTRUs with information regarding the availability of services from "hot spot” access points. Once a candidate "hot spot” is identified, the WTRU is able to establish that it can or cannot establish a connection with the "hot spot” access point.
- Location based services exist for the benefit of wireless users. One such service provides driving directions, which can be used in association with cellular telephones. Generally it is necessary for the user of such services to provide "from” information in the form of current location prior to obtaining directions "to" a desired destination.
- Various location services have been proposed and implemented in order to provide accurate information for identifying the location of a mobile telephone. These include identification of the fixed base station, cellular GPS, and network TDOA in which a comparison is made of the travel time from the cell phone to several location measurement units installed at base stations. The location measurement units are radio receivers that perform high speed cross correlation of detected signals and are typically rack mounted at the base station.
- Location based services currently are being standardized in many air interfaces and is starting to become part of the wireless experience. Current systems typically use time delay information from multiple base stations and triangulate to estimate the location of the user. If there are multiple systems overlapping, such as the case with WLAN and UMTS often times, each system is expected to do its own location estimation. Accordingly, it is desirable to have improved geolocation services.
- SUMMARY SUMMARY
- data from multiple wireless network connections are combined in order to provide increased accuracy in determining location of WTRUs.
- a cellular wireless network and a local wireless network of a diverse type cooperate in generating location data for a WTRU.
- location information in a wireless network for the purpose of identifying the locations of user WTRUs is augmented by use of information obtained from a diverse network.
- data such as GPS data
- the diverse network may be used to determine changes in location of the portable device by making correction adjustments to the secondary location data. This provides continuity of location information of the user's WTRU by combining the primary location data with the secondary location data.
- Figure 1 is a diagram showing the implementation of an exemplary embodiment of the invention.
- Figure 2 is a diagram showing a modification of the present invention, in which GPS or other position data is used.
- Figure 3 is a flow diagram showing estimation of position in accordance with the present invention.
- the invention provides an extension of location detection and location based services to a multi network environment where the user location is determined with greater accuracy due to new information being available, and location information is shared across multiple networks to aid location based services in one network using the location information obtained in another network.
- Location detection and location services are traditionally, defined only in the context of a single network and single mechanism to determine the user's location. This invention allows user location estimates from multiple networks to be used together to get a better estimate of the user location, as well as sharing of the location information from one network to enable location based services in another network.
- the present invention makes location estimation much more accurate by making use of location estimates from multiple networks to increase . accuracy of the estimate. Since there is more information available in the case of multiple networks more accurate estimation can be obtained. For instance, location estimation in WLAN coverage can be accurate down to a few feet (a meter), whereas the accuracy in UMTS is only accurate over several meters. If the two networks shared this information, it would be possible to know where a user is in UMTS system is down to a few feet.
- FIG. 1 is a diagram showing the implementation of an exemplary embodiment of the invention.
- a wireless radio network 11 includes a cellular network controller 12, and a plurality of base stations 13, 16.
- a WTRU 21 is able to communicate with one or more of the base stations, such as base station 14 depicted in Figure 1. Typically communication is maintained by the WTRU 21 with a single one of the base stations except during handoff or other special circumstances.
- Local "hot spot” access points 27, 28 are also able to establish wireless contact with the user WTRU 21.
- "Hot spot” access points 27, 28 are wireless network services which typically have a range which is more limited than that afforded by cellular base stations, but which are optimized for providing high data rates. In some cases, "hot spot” access points 27, 28 are integrated into the cellular network or are able to communicate with the cellular network.
- Signals from the user's WTRU 21 are received by the cognizant base stations 13 16, and values are received to indicate position information.
- the base station 14 assigned to the user's WTRU 21 it is likely that one or more of the base stations 13, 16 receive sufficient signal information to identify the user's WTRU 21.
- This information is combined with information from the hot spots 27, 28 in two ways. First, the hot spots 27, 28 are able to provide an indication of proximity of the WTRU 21 by signal strength. This method is most effective for "hot spots" which are very localized, such as may be provided at a business for the business' customers. This information is used by the cellular network controller 12 as an indication of possible positions for the WTRU 21.
- the WTRU 21 is presumed to be in a position which would coincide with a signal strength measured by the "hot spot" access point 27.
- the "hot spot" access points 2728 are able to provide some location services, and thereby provide positional data. This method is most effective in the case of hot spots intended for users in a large area, such as several city blocks.
- a method of deriving location information by the hot spot access point is to calculate the relative delay between the transmitted and received signals and thereby infer the distance that the signal travels. This gives an indication of the distance of the WTRU from the access point.
- the latter method is useful for combining the location services of several networks.
- competitive networks may or may not provide connections to WTRUs within their coverage areas, such networks may be able to provide location data to a network used by the WTRU for communications services.
- the WTRU 21 communicates through base station 14 to an extent necessary to identify the WTRU 21 as being within the coverage area or cell of the base station 14.
- "hot spot" access point 27 also communicates with the WTRU 21 to an extent necessary to identify the WTRU 21 as being within the coverage area of the "hot spot” access point 27. This information is certainly sufficient for the cellular network controller and the network associated with the "hot spot" access point 27 to determine that the WTRU 21 is within the respective coverage areas.
- the base station 14 is also able to obtain location information concerning the WTRU 21.
- the location information may be geolocation data provided by the
- a geolocation determination by the WTRU 21 is typically by use of a GPS receiver in the WTRU 21, as will be described infra.
- the base station 14 may use positioning calculations such as TDOA calculations or other location techniques to determine the position of the WTRU 21. If the base station 14 obtains geolocation data provided by the WTRU 21, this data is generally considered accurate and further calculations would be unnecessary. In practice, however, geolocation data from the WTRU is often either unavailable or intermittent. GPS data in particular is unavailable without a clear RF view of several satellites. Often building materials and other environmental factors will block the satellite signals, and a clear RF view does not exist. For this reason, the base station 14 may augment GPS data with other location data.
- the cellular network controller associated with a primary network obtains location data directly, and indirectly from a diverse network. This data from the diverse network is combined with data obtained from the primary network. The cellular network controller then combines the data in order to obtain a position estimate optimized by inclusion of data from both the primary network and the diverse network.
- Information concerning the location data from the diverse network may come directly from the diverse network, or may be stored by the cellular network controller in a database 29. In many cases, the database 29 will include general information concerning the locations of one or more "hot spots" which are reception areas of the diverse network.
- This data can be obtained by using a directory of "hot spot” locations, by querying the "hot spot” access point, or by historical data regarding coincidences between known locations of WTRUs connected to the access points.
- the primary network would include base stations 13, 16, so that the data would be obtained by information obtained from base station 14.
- the diverse network would include "hot spots” 27, 28, and the cellular network controller would combine the information obtained from base station 14 with information from "hot spot” access point 27.
- the radio network is then able to use the information from all of these sources to find the location of the emergency services number caller directly, or alternatively to provide supplemental location information for other methods, (such as TDOA).
- a diverse network serving "hot spots” will not have data available concerning the geographical locations of "hot spot” access points, or will only have generalized address data.
- the "hot spot" access point can be identified by the cellular network controller 12 with a known location of a WTRU, the cellular network controller 12 may include that "hot spot" location to augment the database.
- FIG. 2 is a diagram showing a wireless network 41 according to a modification of the present invention.
- GPS or other position data is enhanced by location data obtained by a combination of base stations 43, 46 and a diverse network 47, 48.
- the user's WTRU 51 has a GPS or other position location circuit 52. If the user's WTRU 51 is able to acquire enough satellites, the user's WTRU 51 can accurately report its position to the cellular network controller 12.
- GPS data, represented by satellite 53 is considered to be more accurate than data obtained from comparing signals received by the diverse network 47, 48 or comparing signals received by the base stations 13, 16 from the user's WTRU 51 with signals received from the diverse network 47, 48.
- the information obtained by comparing signals from the user's WTRU 51 with the signals received by the diverse network 47, 48 will be used to update the GPS data.
- the information obtained by comparing signals from the user's WTRU 51 with the signals received by the diverse network 47, 48 is used to indicate positional changes in the WTRU 51, thereby modifying the GPS data primarily by adjusting the GPS data in accordance with a sensed change, rather than generating new positional information independently of the GPS data.
- Information concerning the location data from the diverse network is enhanced by the use of GPS data from WTRUs because in many cases data concerning the locations of "hot spots" is not readily available to the primary network.
- FIG. 3 is a flow diagram 100 showing estimation of position in accordance with the present invention.
- a WTRU is acquired by a primary network or a diverse network (step 101) and in response, the acquiring network attempts to identify the location of the WTRU (step 102).
- the identification of the location (step 102) can be initiated when the WTRU is acquired or delayed until a further communication link is established.
- an estimate of position is made (step 111), using data provided by the primary network (step 112) and data obtained from a diverse network (step 113). This can be performed by the primary network independently of the diverse network as well as by use of the diverse network. In the case of data obtained from the diverse network (step 113) database data provided by the primary network is used to provide additional information. Given the circumstance in which the primary network attempts to obtain location data, the WTRU is assigned to a particular base station, and the primary network obtains data available from that base station. Often the network is able to use data from neighboring base stations in addition to the base station to which the WTRU is assigned.
- the data from the base stations of the primary network is resolved to the extent of the capabilities of the primary network for use in determining the location of the WTRU.
- data is obtained from the diverse network. This data can be position determinations which are deemed to have a particular accuracy.
- the data from the diverse network is combined with the data from the primary network in order to obtain more precise location estimates of the WTRU. This diverse network data can be obtained from multiple diverse networks.
- the data from the diverse network can vary from general information that the diverse network is able to identify the WTRU within its coverage area to data concerning specific location within a particular access point of the diverse network. The accuracy of the data and the ability of the data to limit the possible position estimates made by the primary network must then be determined. In one embodiment, the data from the diverse network is itself self limiting.
- the primary network can then combine the data with data directly obtained by the primary network, by use of a database. For example, if the diverse network has a specific geographic coverage area within which WTRUs can be identified, the data from the diverse network is that the WTRU is within that geographic area.
- the diverse network may provide specific position estimates. The position estimates may include precision data or precision data may be separately obtained.
- the data from the diverse network can be compared with data associating that data with further data.
- Further data can include geographical location data, a database associating signal values with possible locations, a predetermination of the accuracy of location data obtained by the diverse network, and an association between position fixes or values provided by the diverse network with location determinations of known accuracy.
- ambiguity it is a matter of design choice as to which data is accepted as true. It is possible to obtain some verifications of position, for example by obtaining GPS location readings and comparing the GPS reading to the estimate. These verifications can be used to provide corrections to future position estimates.
- step 123 an estimation of a change in position is made. This can be performed by the primary network independently of the diverse network, by use of the diverse network, or by the primary network using data from the primary network in combination with data from the diverse network. The estimation of change in position is then used to modify the reported GPS position, so that the reported position is based on the GPS position (step 126), and not solely by an independently generated position estimate.
- the validity of a previous GPS estimate may be modified by the availability of rate sensing data from the WTRU, as represented by the dashed lines in the diagram. To the extent that the rate information is deemed to be more reliable than change in signals received by the diverse network, the rate information is considered when determining the validity of the GPS data. [0060] If the WTRU provides the user with GPS based navigational data, the network can update the GPS data according to the determinations made by the network regarding location. This provides the user with a continuation of GPS based navigational data in instances where the GPS data may be intermittent.
- GPS data is received from the user's WTRU during times of availability of the GPS data, thereby providing primary location data concerning location of the user's WTRU.
- Location data from the diverse network is used during times of unavailability of the GPS data, thereby providing secondary location data concerning location of the user's WTRU.
- the above descriptions include the use of a primary network and a diverse network.
- the diverse network can include "hot spot” access points administered by the primary network or "hot spot” access points or other access points administered independently of the primary network.
- the diverse network can also be different network services such as an analog network or a network which permits "roaming" off network by users.
- the location service can be performed by the diverse network as well as by the primary network, and in particular this will occur if a user engages emergency services while in a "roaming" mode.
- the functions described above in association with the primary network can be performed by the diverse network, with the functions described above in association with the diverse network performed by the primary network or by another diverse network.
- the above descriptions include the use of a wireless network controlled by a cellular network controller and a locally controlled network which includes one or more access points (APs).
- the APs may be administered by the cellular network controller or administered independently of the cellular network controller, but behave as independent groups of one or more radio interfaces.
- Data from the networks are combined in order to provide increased accuracy in determining location of WTRUs.
- Further location data such GPS data, may be used to obtain location of the user's WTRU independently of the networks and is combined with data obtained by using the locations of transceivers associated with the locally controlled network and location information obtained fro the wireless network controlled by the cellular network controller. This provides continuity of location information of the user's WTRU by combining the primary location data, for example from the GPS, with the secondary location data.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006554123A JP2007523565A (en) | 2004-02-20 | 2005-02-07 | Multi-network location service support |
CA002557441A CA2557441A1 (en) | 2004-02-20 | 2005-02-07 | Multi-network location services support |
EP05713087A EP1719357A2 (en) | 2004-02-20 | 2005-02-07 | Multi-network location services support |
NO20063984A NO20063984L (en) | 2004-02-20 | 2006-09-05 | Multi-network location service support |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US54629204P | 2004-02-20 | 2004-02-20 | |
US60/546,292 | 2004-02-20 | ||
US11/014,253 US20050186967A1 (en) | 2004-02-20 | 2004-12-16 | Multi-network location services support |
US11/014,253 | 2004-12-16 |
Publications (2)
Publication Number | Publication Date |
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WO2005081796A2 true WO2005081796A2 (en) | 2005-09-09 |
WO2005081796A3 WO2005081796A3 (en) | 2005-11-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/003920 WO2005081796A2 (en) | 2004-02-20 | 2005-02-07 | Multi-network location services support |
Country Status (7)
Country | Link |
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US (1) | US20050186967A1 (en) |
EP (1) | EP1719357A2 (en) |
JP (1) | JP2007523565A (en) |
KR (2) | KR20060116257A (en) |
CA (1) | CA2557441A1 (en) |
NO (1) | NO20063984L (en) |
WO (1) | WO2005081796A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8045995B2 (en) | 2007-05-31 | 2011-10-25 | Yahoo! Inc. | Centralized location broker |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7821449B2 (en) * | 2005-01-12 | 2010-10-26 | Qualcomm Incorporated | Base station almanac assisted positioning |
US7995538B2 (en) * | 2005-04-07 | 2011-08-09 | Qualcomm Incorporated | Method and apparatus for throttling access to a shared resource |
US7657269B2 (en) * | 2005-09-06 | 2010-02-02 | At&T Intellectual Property I, L.P. | Method and apparatus for locating multimode communication devices |
US8165606B2 (en) * | 2005-12-22 | 2012-04-24 | Kyocera Corporation | Apparatus, system, and method for location information management in a portable communication device |
US20070217374A1 (en) * | 2006-03-15 | 2007-09-20 | Shay Waxman | Techniques to collaborate wireless terminal position location information from multiple wireless networks |
US8144673B2 (en) | 2006-07-07 | 2012-03-27 | Skyhook Wireless, Inc. | Method and system for employing a dedicated device for position estimation by a WLAN positioning system |
US7856234B2 (en) | 2006-11-07 | 2010-12-21 | Skyhook Wireless, Inc. | System and method for estimating positioning error within a WLAN-based positioning system |
US8060108B1 (en) * | 2007-04-19 | 2011-11-15 | Sprint Spectrum L.P. | Method and apparatus for generating and outputting a location data stream |
EP2184927A4 (en) * | 2007-07-06 | 2013-04-10 | Navitime Japan Co Ltd | Information collection system, information registration server, information collection method, and mobile terminal device |
JP4516586B2 (en) * | 2007-08-27 | 2010-08-04 | 株式会社日立製作所 | Mobile communication system |
KR101451283B1 (en) * | 2008-02-22 | 2014-10-16 | 에스케이텔레콤 주식회사 | System, Server and Method for Measuring Position Using Different Kinds of Networks |
KR101433258B1 (en) * | 2008-05-22 | 2014-08-25 | 에스케이텔레콤 주식회사 | Measuring Terminal-Locaton System and Control Method thereof |
US8103287B2 (en) | 2008-09-30 | 2012-01-24 | Apple Inc. | Methods and apparatus for resolving wireless signal components |
US8022877B2 (en) | 2009-07-16 | 2011-09-20 | Skyhook Wireless, Inc. | Systems and methods for using a satellite positioning system to detect moved WLAN access points |
KR101123045B1 (en) * | 2010-11-15 | 2012-03-16 | 주식회사 유비즈밸리 | 2 channel user certification method by using user location information |
CN103582115B (en) | 2012-07-27 | 2019-05-10 | 华为技术有限公司 | A kind of localization method, control equipment and mobile communication system |
US9383451B2 (en) | 2013-06-19 | 2016-07-05 | Zoll Medical Corporation | Systems and methods of determining location using a medical device |
WO2016154274A2 (en) | 2015-03-24 | 2016-09-29 | Zoll Medical Corporation | Systems and methods of determining location using a medical device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5327144A (en) * | 1993-05-07 | 1994-07-05 | Associated Rt, Inc. | Cellular telephone location system |
US5724660A (en) * | 1995-06-07 | 1998-03-03 | At&T Wireless Services, Inc. | Method and apparatus for locating a mobile station by comparing calculated location area with GPS coordinates |
US6052598A (en) * | 1997-09-30 | 2000-04-18 | At&T Corp | Method for predicting the location of a mobile station in a mobile communications network |
US20020198001A1 (en) * | 2000-12-27 | 2002-12-26 | Sundeep Bajikar | Method and apparatus for an independent positioning system and augmentation of GPS |
US20030193432A1 (en) * | 2000-12-26 | 2003-10-16 | Lg Electronics Inc. | System for determining position of mobile communication terminal and method thereof |
US6768909B1 (en) * | 2000-02-18 | 2004-07-27 | Ericsson, Inc. | Handoff between external and internal positioning systems |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPP375498A0 (en) * | 1998-05-29 | 1998-06-18 | Small, David | A method for creating a network positioning system (NPS) |
US6801778B2 (en) * | 2001-01-31 | 2004-10-05 | Ericsson Inc. | Efficient location of mobile radiotelephones using cellular and GPS information |
US7623871B2 (en) * | 2002-04-24 | 2009-11-24 | Qualcomm Incorporated | Position determination for a wireless terminal in a hybrid position determination system |
US6904055B2 (en) * | 2002-06-24 | 2005-06-07 | Nokia Corporation | Ad hoc networking of terminals aided by a cellular network |
WO2004012468A1 (en) * | 2002-07-31 | 2004-02-05 | Interdigital Technology Corporation | Handover between a cellular system and a wireless local area network |
US6774842B2 (en) * | 2002-12-03 | 2004-08-10 | Nokia Corporation | Generating entries for a database supporting a positioning of a mobile terminal |
US7130646B2 (en) * | 2003-02-14 | 2006-10-31 | Atheros Communications, Inc. | Positioning with wireless local area networks and WLAN-aided global positioning systems |
US8971913B2 (en) * | 2003-06-27 | 2015-03-03 | Qualcomm Incorporated | Method and apparatus for wireless network hybrid positioning |
-
2004
- 2004-12-16 US US11/014,253 patent/US20050186967A1/en not_active Abandoned
-
2005
- 2005-02-07 WO PCT/US2005/003920 patent/WO2005081796A2/en active Application Filing
- 2005-02-07 KR KR1020067021924A patent/KR20060116257A/en not_active Application Discontinuation
- 2005-02-07 EP EP05713087A patent/EP1719357A2/en not_active Withdrawn
- 2005-02-07 JP JP2006554123A patent/JP2007523565A/en not_active Withdrawn
- 2005-02-07 CA CA002557441A patent/CA2557441A1/en not_active Abandoned
- 2005-02-07 KR KR1020067019411A patent/KR20060113790A/en active IP Right Grant
-
2006
- 2006-09-05 NO NO20063984A patent/NO20063984L/en not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5327144A (en) * | 1993-05-07 | 1994-07-05 | Associated Rt, Inc. | Cellular telephone location system |
US5724660A (en) * | 1995-06-07 | 1998-03-03 | At&T Wireless Services, Inc. | Method and apparatus for locating a mobile station by comparing calculated location area with GPS coordinates |
US6052598A (en) * | 1997-09-30 | 2000-04-18 | At&T Corp | Method for predicting the location of a mobile station in a mobile communications network |
US6768909B1 (en) * | 2000-02-18 | 2004-07-27 | Ericsson, Inc. | Handoff between external and internal positioning systems |
US20030193432A1 (en) * | 2000-12-26 | 2003-10-16 | Lg Electronics Inc. | System for determining position of mobile communication terminal and method thereof |
US20020198001A1 (en) * | 2000-12-27 | 2002-12-26 | Sundeep Bajikar | Method and apparatus for an independent positioning system and augmentation of GPS |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8045995B2 (en) | 2007-05-31 | 2011-10-25 | Yahoo! Inc. | Centralized location broker |
Also Published As
Publication number | Publication date |
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KR20060113790A (en) | 2006-11-02 |
NO20063984L (en) | 2006-09-05 |
CA2557441A1 (en) | 2005-09-09 |
JP2007523565A (en) | 2007-08-16 |
WO2005081796A3 (en) | 2005-11-03 |
US20050186967A1 (en) | 2005-08-25 |
KR20060116257A (en) | 2006-11-14 |
EP1719357A2 (en) | 2006-11-08 |
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