US 7,796,998 B1
`(10) Patent No.:
`a2) United States Patent
`Zellneret al.
`(45) Date of Patent:
`Sep. 14, 2010
`
`
`US007796998B1
`
`(54) METHOD AND SYSTEM FOR DELIVERY OF
`A CALLING PARTY’S LOCATION
`
`(75)
`
`Inventors: Samuel N. Zellner, Dunwoody, GA
`(US); RobertT. Moton, Jr., Alpharetta
`2
`meg
`Tene
`.
`waa,
`elon
`ore
`GA (US); Mark J. Enzmann, Roswell,
`GA (US)
`(73) Assignee: AT&T Intellectual Property, I, L.P.,
`Reno, NV (US)
` Subfeoctoanydisdlhimerthetemofitis
`patent is extended or adjusted under 35
`US.C. 154(b) by 64 days.
`
`(#) Notice:
`
`(21) Appl. No.: 09/630,134
`
`(22)
`
`Filed:
`
`Aug.1, 2000
`
`379/59
`12/1996 Comer
`5,588,042 A
`
`.. 455/404
`1/1997 LeBlanc ..
`5,596,625 A *
`379/59
`3/1997 Comer
`5,610,973 A
`4/1997 Herrick etal. we. 342/449
`5,625,364 A
`8/1997 Connolly etal... 455/436
`5,657,375 A *
`9/1997 Krasner
`5,663,734 A
`5,694,453 A * 12/1997 Fuller et al... 340/825.49
`Continued
`
`)
`(
`FOREIGN PATENT DOCUMENTS
`000964542 A2
`12/1999
`accesses 705/14. X
`(Continued)
`OTHER PUBLICATIONS
`
`=F
`
`.
`PCTInternational Search Report, PCT/US01/22295.
`(Continued)
`
`(51)
`
`Primary Examiner—Sharad Rampuria
`(74) Attorney, Agent, or Firm—Cantor Colburn LLP
`
`(57)
`
`ABSTRACT
`
`Int. Cl.
`(2009.01)
`IT04W 24/00
`(82) US Ch sasesueceev 455/456.1; 455/404.1; 455/457;
`455/433; 455/414.1; 455/415; 379/45; 379/201 .08;
`370/352; 370/401
`(58) Field of Classification Search ................ 455/457,_A method and system for providinga service that delivers
`455/415, 461, 566, 456.1-3, 414.1-2, 404,
`location information associated with a caller. The service
`455/404.1, 433; 379/207.15, 37, 43, 45,
`operates in both wireline and wireless networks, providing
`379/201 08-11, 142.1, 142.06, 201.11, 88.21;
`called parties with the location informationof calling parties
`370/351-356, 401, 338; 709/203-206
`whouse either stationary terminal devices or mobile devices.
`See applicationfile for complete search history.
`The service can operate as a stand alone service or can be a
`part of a calling namedelivery service (or caller-ID service),
`delivering location information in addition to the conven-
`tional name, number, date, and time. The primary compo-
`nents of the present invention includea service control point,
`an address database in communication with the service con-
`trol point, and a networkthat tracks the locations of mobile
`network users. The system further includes a mapping con-
`verter if the location data provided by the network is not
`:
`:
` ‘eamloptul to. subscriber:
`
`(56)
`
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`

`

`US 7,796,998 B1
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`Page 2
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`
`—*
`
`

`

`US 7,796,998 B1
`Page 3
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`“Signal Soft Wireless Location Services”, available at http://www.
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`
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`SUOUCEFGrCGRFOAGCNFOCNeocead
`
`
`
`

`

`US 7,796,998 B1
`Page 4
`
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`U.S. Official Action dated May 16, 2003 in U.S. Appl. No.
`09/740,372.
`U.S. Official Action dated Oct. 30, 2003 in U.S. Appl. No.
`09/740,372.
`U.S. Official Action dated Apr. 15, 2004 in U.S. Appl. No.
`09/740,372.
`U:S. Official Action dated Nov. 2, 2004 in U.S. Appl. No. 09/740,372.
`U.S. Official Action dated Nov. 10, 2003 in U.S. Appl. No.
`09/739, 162.
`
`U.S. Official Action dated Mar. 9, 2004 in U.S. Appl. No. 09/739,162.
`USS. Official Action dated Sep. 9, 2004 in U.S. Appl. No. 09/739,162.
`U.S. Official Action dated Nov. 10, 2003 in U.S. Appl. No.
`09/740,414.
`U.S. Official Action dated Apr. 21, 2004 in U.S. Appl. No.
`09/740,414.
`USS. Official Action dated Oct. 5, 2004 in U.S. Appl. No. 09/740,414.
`http://www.openwave.com/us/news_room/press_releases/2001/
`20010320, “Open Wave Announces Availability to End-to-EndSet of
`Location Services for Wireless Internet”.
`
`* cited by examiner
`
`

`

`U.S. Patent
`
`Sep. 14, 2010
`
`Sheet 1 of 6
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`US 7,796,998 B1
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`U.S. Patent
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`Sep. 14, 2010
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`U.S. Patent
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`Sep. 14, 2010
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`Sheet 4 of 6
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`US 7,796,998 B1
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`U.S. Patent
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`Sep. 14, 2010
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`Sheet 5 of 6
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`U.S. Patent
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`Sep. 14, 2010
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`Sheet 6 of 6
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`US 7,796,998 B1
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`

`US 7,796,998 Bl
`
`1
`METHOD AND SYSTEM FOR DELIVERY OF
`A CALLING PARTY’S LOCATION
`
`BACKGROUND
`
`1. Field of the Invention
`The present invention relates to telecommunication sys-
`tems, and in particular, to caller name delivery services and
`networks that track the location and identity of network
`devices.
`
`2. Backgroundof the Invention
`Users of modern public switched telephone networks
`(PSTNs)have long enjoyedthe benefits ofcalling name deliv-
`ery (CNAM), also knownascaller identification or caller ID.
`CNAMenables a called party to view information about a
`calling party on a display unit, which is typically a liquid
`crystal display (LCD), a light-emitting diode (LED)display,
`or acomparable device. The displayed information generally
`includesat least the calling party’s name,the calling party’s
`directory number, and the date and time of thecall.
`PSTNstypically provide CNAM information (except for
`the date and time, which is generally provided by the display
`unit) using the modelillustrated in FIG. 1, which is a priorart
`schematic of a CNAM system architecture implemented
`within an Advanced Intelligent Network (AIN). AIN net-
`works use a complex, high speed, high traffic volume data
`packet-switched messaging system to provide versatility in
`the handling of telephone calls. The Advanced Intelligent
`Network System is described in US. Pat. No. 5,701,301 and
`USS. Pat. No. 5,838,774, which are hereby incorporated by
`reference in their entirety.
`Referring to FIG. 1, CNAMis typically implementedin the
`following manner. A calling party 101 picks up the telephone
`and dials the directory numberof a called party 102, which is
`404-555-2222. Called party 102 is a CNAMsubscriber hav-
`ing a CNAMdisplay unit 116. CNAM display unit 116 could
`be separate from orintegral to the device of called party 102.
`After calling party 101 dials the directory number, an central
`office 104 (also referred to as a service switching point)
`serving calling party 101 obtains routing information and
`populates an initial address message (IAM) with certain
`information. The IAM is a parameter that exists within an
`integrated services digital network user part ISUP) signaling
`message. The IAMis a defined message type from TR-NTW-
`000246 and ITU Q.764/Q.767, and is one of a sequence of
`messages used in ISUP trunk signaling. An ISUP signaling
`message employs a Common Circuit Signaling System 7
`(CCS7) call setup protocol. In particular, the [AM is popu-
`lated with the directory numberofcalling party (404-555-
`1111), the directory number of the called party (404-555-
`2222), and a presentation parameter.
`In this case,
`the
`presentation parameter allows a CNAM display.
`Central office 104 then sends this routing information in
`the signaling message to a central office 106, which serves
`called party 102. Recognizing that the call is for a CNAM
`subscriber, central office 106 halts the calling process to
`launch a calling name query 150 on the CCS7 network. As a
`part of the query launch, central office 106 populates a called
`party address parameter in query 150 with the directory num-
`ber ofcalling party 101, in this case 404-555-1111. The called
`party address parameter is a routing parameter within an
`AdvancedIntelligence Network (AIN) query package.
`After central office 106 has populated the called party
`address parameter, calling name query 150 is sentto a signal-
`ing transfer point (STP) 108. STP 108 performsa globaltitle
`translation (GTT) on the called party address parameter to
`determine to which service control point (SCP)calling name
`
`10
`
`15
`
`20
`
`25
`
`30
`
`35
`
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`
`50
`
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`
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`
`2
`query 150 should be routed. This determination is made based
`on thefirst three digits (the numbering plan area, or NPA) in
`the directory numberofcalling party 101, which in this case
`is 404. STP 108 then forwards the calling name query to the
`appropriate SCP 112 through CCS7 Network 110. SCP 112
`searches a CNAM database 114 for calling party’s record
`from which SCP 112retrieves the associated name. CNAM
`
`database 114 is preferably a part of SCP 112, as shownin FIG.
`1, but may be separate from SCP 112, or incorporated as part
`ofanother network elementsuch as a service node or a switch.
`
`SCP 112 returns the name associated with the directory
`numberof calling party 101 in a transaction capability appli-
`cation part (TCAP) response 151to centraloffice 106 through
`CCS7 Network 110 and STP 108. TCAP response 151 is the
`final message containing instructions on how to handle the
`call. TCAP response 151 ends the SSP/SCPtransaction that
`began with calling name query 150. In this example,the full
`nameofcalling party 101 is returned in TCAP response 151
`to central office 106.
`
`Whencentral office 106 terminates the call to called party
`102, central office 106 sends the nameofcalling party 101
`and the directory number of calling party 101 (404-555-
`1111). Central office 106 sends this information over called
`party’s line to called party’s display unit 116. The informa-
`tion is then displayed on called party’s display unit 116, along
`with the date and time of the call (generated by display unit
`116).
`Theprincipal advantage ofconventional CNAMservicesis
`the ability to screen calls. Upon receiving a call, a called party
`can review the information on the display unit and decide
`whetheror not to answerthe call. However, users wanting to
`screen calls and fulfill other location-sensitive purposes often
`prefer to know more aboutthe calling party than just name,
`number, date, and time. For instance, a service dispatcher
`monitoring the activities ofhis service technician may wish to
`receive the exact location of his technician each time the
`
`technician calls in, so as to facilitate efficient scheduling of
`the next assignment. Although the name and numberon the
`CNAMdisplay unit could possibly provide cluesto the tech-
`nician’s location, the dispatcher would prefer seeing a more
`precise and easily understandable description of location,
`e.g., a street address or building name. Thus, although the
`typical CNAM information may besuitable for simple call
`screening, many telephone users would prefer to receive even
`more information aboutthecalling party.
`
`SUMMARYOF THE INVENTION
`
`The present invention is a method and system for providing
`a service that delivers location information associated with a
`caller. The service operates in both wireline and wireless
`networks, providing called parties with the location informa-
`tion of calling parties who use either stationary or wireless
`telephones. The service can operate as a stand aloneservice or
`can be a part of a CNAM service, delivering location infor-
`mation in addition to the conventional name, number, date,
`and time. In conjunction with any call, the present invention
`reports to the called party the location from whichthe calling
`party is calling. Therefore, a subscriber can use the valuable
`location information to better screen calls andto fulfill other
`location-sensitive purposes.
`The primary components ofthe present invention include a
`service control point, an address database in communication
`with the service control point, and a network that tracks the
`locations ofnetwork users. The service control point operates
`within a PSTN in cooperation with other AIN components,
`such as signal transfer points and service switching points.
`
`

`

`US 7,796,998 Bl
`
`3
`The address database operates within the location-tracking
`network and allows access by the service control pointto its
`contents. The location-tracking network interfaces with the
`PSTNto terminate calls between location-tracking network
`users and PSTNusers. For example, for a wireline network,
`central offices provide this interface. As another example, for
`awireless network, mobile switching centers (MSCs) provide
`this interface. As another example, for voice over Internet
`protocol (VoIP) calls, an Internet protocol network and an
`IP-to-PSTN gateway providethe interface.
`The service control point performs service logic in
`response to a query requesting the location of a calling party.
`The service control point can also execute logic in response to
`a query for the caller name. Theservice control point accesses
`the namedatabase (for CNAM)andthe address database (for
`location information delivery). In response to queries, the
`service control pointalso returnsrouting instructionsto direct
`the service switching points how to terminate a call and to
`provide CNAMandlocation information for presenting on a
`display unit.
`The address database cross-references location informa-
`
`4
`party’s numberto determine thecalling party’s name,return-
`ing the calling party’s name, and displaying the calling par-
`ty’s nameonthe display unit.
`In the context ofa call from a mobile device, the method of
`the present invention generally includes determiningthecall-
`ing party’s location using a location system ofthe location-
`tracking network, recording the calling party’s location in the
`address database with an associated identifier (e.g., Mobile
`Identification Number, or MIN), forwarding the call to a
`service switching point of the PSTN,activating a trigger set
`for calls to a location delivery subscriber (the called party),
`sending a query to the service control point requesting loca-
`tion information, searching the address database forthecall-
`ing party’s directory numberto determinethe calling party’s
`location, returning routing instructions and the calling party’s
`location to the service switching point, routing the call to the
`called party, and displaying the calling party’s location on the
`called party’s display unit.
`Preferably, the location system records the calling party’s
`location in a way meaningful to the location delivery sub-
`scriber of the location information delivery service. For
`example, location information could include street addresses,
`tion with directory numbers, listing location information for
`landmarks, or building names. However, if the location sys-
`every directory number. These directory numbers (commonly
`tem provides less descriptive location information,
`this
`referred to as telephone numbers) correspondto stationary
`method may also include the step of converting the location
`terminal devices (e.g., telephones connected to the wireline
`information provided by the location system into a more
`network) and to mobile devices (e.g., cellular telephones).
`meaningful description or a description better suited for dis-
`For stationary terminal devices, the location-tracking net-
`playing on a display unit. For example, if the location system
`work records each entry in the address database upon service
`merely provides position coordinates, the service control
`activation and does not change the entry unless the terminal
`30
`device is disconnected and/or moved. For mobile devices, the
`point could use a mapping converterto translate the position
`coordinates received from the address databaseintoastreet
`location-tracking network periodically updates entries in the
`address database, changing the location information as the
`address or building namefor display on the display unit.
`mobile devices move from placeto place.
`Alternatively, in addition to location delivery, the present
`The location-tracking network is a call carrier that tracks
`invention could also include searching a name database in
`the locations of its users and maintains the informationin the
`communication with the service control pointfor the calling
`party’s identifier to determine the calling party’s name,
`returning the calling party’s na