PCT
`
`WORLD INTELLECTUAL PROPERTY ORGANIZATION
`International Bureau
`
`
`
`INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT)
`
`H04M 1/66, H04Q 7/38
`
`(11) International Publication Number:
`
`WO 00/28721
`
`18 May 2000 (18.05.00)
`
`
`
`(51) International Patent Classification 7 ;
`
`(43) International Publication Date:
`
`
`
`(21) International Application Number: PCT/US99/22203|(81) Designated States: AE, AL, AM, AT, AU, AZ, BA, BB, BG,
`
`BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB,
`
`
`
`GD, GE, GH, GM, HR, HU,ID, IL, IN, IS, JP, KE, KG,
`(22) International Filing Date:
`24 September 1999 (24.09.99)
`KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK,
`
`MN, MW,MX,NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI,
`
`
`SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZA, ZW,
`(30) Priority Data:
`09/188,787
`7 November 1998 (07.11.98)
`US
`ARIPO patent (GH, GM, KE, LS, MW, SD, SL, SZ, TZ,
`
`UG, ZW), Eurasian patent (AM, AZ, BY, KG, KZ, MD,
`RU, TJ, TM), European patent (AT, BE, CH, CY, DE, DK,
`
`ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE), OAPI
`patent (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR,
`NE, SN, TD, TG).
`
`
`
`
`PROCESS CALL
`
`[US/US]; 1010 East Arapaho
`(71) Applicant: ERICSSON INC.
`Road MS F-11, Richardson, TX 75081 (US).
`
`(72) Inventors: WESTBROOK, Bret; 3560 Alma Road #1024,
`Richardson, TX 75080 (US). BOLTZ, David; 901 Lockness
`Lane, Garland, TX 75044 (US).
`
`Published
`With international search report.
`
`(74) Agent: KLINGER, Robert, C.; Jackson Walker, L.L.P., 901 E.
`Main Street #6000, Dallas, TX 75202 (US).
`
`(54) Title: MOBILE STATION WITH VOICE RECOGNITION AUTHENTICATION
`
`(57) Abstract
`
`A wireless mobile station
`
`capabilitiesto determine
`authorized user of
`the mobile
`station.
`In the first embodiment,
`the mobile station is provided with
`a SIM card storing voiceprints of
`authorized users. A mobile station
`user
`provides
`voice
`samples
`which are compared against
`the
`voiceprints stored in the SIM card
`to determine a match before a call
`ed usi
`
`station. Ina second’embodiment,
`
`RECORD AUTHORIZED USER'S
`VOICE SAMPLES OR VOICE PRINTS
`
`Le
`
`COMPARE CURRENT USER’S VOICE
`SAMPLES TO RECORDED VOICE SAMPLES
`
`DETERMINE IF CURRENT
`USER IS AN AUTHORIZED USER
`
`voice samples of a current user
`are compared during a call
`in
`progress,
`and future
`calls
`are
`prevented until an authorized user
`is determined. An IN solution
`is also provided including voice
`recognition and authorization of
`mobile users placing calls or attempting to place calls over the wireless network.
`
`1
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`APPLE 1042
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`APPLE 1042
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`1
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`Zimbabwe
`
`Codesusedto identify States party to the PCT on the front pages of pamphlets publishing international applications under the PCT.
`Albania
`ES
`LS
`Lesotho
`Slovenia
`Armenia
`LT
`FI
`Lithuania
`Slovakia
`Austria
`FR
`LU
`Luxembourg
`Senegal
`Australia
`GA
`LV
`Latvia
`Swaziland
`GB
`MC
`Monaco
`Chad
`Azerbaijan
`MD
`Bosnia and Herzegovina
`Republic of Moldova
`Togo
`Barbados
`MG
`Madagascar
`Tajikistan
`MK
`Turkmenistan
`Belgium
`The former Yugoslav
`Burkina Faso
`Republic of Macedonia
`Turkey
`Mali
`Bulgaria
`Trinidad and Tobago
`Benin
`Ukraine
`Mongolia
`Brazil
`Mauritania
`Uganda
`Belarus
`Malawi
`United States of America
`Canada
`Mexico
`Uzbekistan
`Viet Nam
`Central African Republic
`Niger
`Netherlands
`Congo
`Yugoslavia
`Switzerland
`Norway
`Céte d'Ivoire
`New Zealand
`Cameroon
`Poland
`China
`Portugal
`Cuba
`Romania
`Russian Federation
`Czech Republic
`Sudan
`Germany
`Denmark
`Sweden
`Estonia
`Singapore
`
`GH
`GN
`GR
`HU
`IE
`IL
`IS
`IT
`JP
`KE
`KG
`KP
`
`KR
`KZ
`Le
`ui
`LK
`LR
`
`FOR THE PURPOSES OF INFORMATION ONLY
`
`ML
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`Spain
`Finland
`France
`Gabon
`United Kingdom
`Georgia
`Ghana
`Guinea
`Greece
`Hungary
`Treland
`Israel
`Iceland
`Ttaly
`Japan
`Kenya
`Kyrgyzstan
`Democratic People’s
`Republic of Korea
`Republic of Korea
`Kazakstan
`Saint Lucia
`Liechtenstein
`Sri Lanka
`Liberia
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`WO 00/28721
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`PCT/US99/22203
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`MOBILE STATION WITH VOICE RECOGNITION AUTHENTICATION
`
`FIELD OF THE INVENTION
`
`The present invention is generally related to communications
`
`networks including wireless telephony communication networks, and
`
`moreparticularly to wireless mobile stations including cellular telephones
`
`and the like.
`
`BACKGROUND OF THE INVENTION
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`10
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`The infrastructure of wireless communication networkstypically
`
`includes an originating network, a terminating network, and a
`
`communication link exchanging voice and data between these networks.
`
`The wireless communication network services multiple mobile stations via
`
`a radio frequency (RF) communication links. The wireless communication
`
`15
`networks and mobile stations can be based onavariety of wireless
`
`standards including GSM, TDMA, CDMA, AMPSand D-AMPS.
`
`Fraudulent use of mobile stationsis a large problem faced by the
`
`wireless service providers and accounts for a significant portion of lost
`
`revenue. Costs associated with fraudulent use of the mobile stationsis
`
`20
`
`generally unrecoverable. To prevent the unauthorized use of mobile
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`stations, the communication network and/or the mobile stations can be
`
`provided with a variety of authentication mechanismsand protocols to
`
`insure that a mobile subscriber is an authorized user of a mobile station.
`
`In some schemes, authentication triplets are utilized whereby a mobile
`
`stations authenticates itself with the servicing network every time the
`
`mobile station enters service,i.e. at power up, or every time a mobile
`
`subscriber enters a new calling area. Coding techniques are also utilized
`
`to encrypt identification information of the mobile station including the
`
`mobile station’s serial number and manufacturer number, which
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`10
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`information is required to validate an authorized mobile station.
`
`Other techniques to prevent unauthorized use of a mobile station
`
`include providing locking features of the mobile station itself. In this
`
`scheme, a code, such as a PIN number,is required to unlock the mobile
`
`station prior to use. This authorization schemeis effective as long as the
`
`15
`
`mobile user consistently uses this feature, which is typically not the case of
`
`a typical mobile user. Thus,if the phoneis left in the un-locked state,it
`
`can still be used by an unauthorized user.
`
`There is desired an improved method to reduce or prevent
`
`fraudulentcalls by a wireless mobile subscriber.
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`SUMMARYOF THE INVENTION
`
`The present invention achicves technical advantages as a mobile
`
`station and wireless network having voice recognition features to ensure
`
`calls are made on the mobile station by only authorized users. Voice
`
`samples or voiceprints of a current mobile station user are compared to
`
`voiceprints of authorized users to verify authorized users of the particular
`
`mobile station. Several embodiments of the present invention are
`
`provided.
`
`10
`
`Accordingto a first preferred embodimentof the present invention,
`
`voiceprints of authorized users are stored in a SIM card of the mobile
`
`station. Prior to makingacall, a current user provides voice samples to
`
`the mobile station which are then compared with the voiceprints stored in
`
`the SIM card. If a match is found,the useris given an indication and
`
`15
`
`allowed to proceed with the call. If a match is not found, the mobile
`
`station is disabled until a voice sample is provided and recognized. This
`
`authentication process can be required for each call, on a daily basis, or at
`
`powerup, for example. The voice authentication process can be
`
`overridden with a personal identification number (PIN) number.
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`According to a second embodimentof the present invention, the
`
`mobile userplaces a call, and during the call the mobile station compares
`
`voice samples of the user with voiceprints stored in the SIM card to
`
`authorize the user. If a match is found, the mobile station remainsactive.
`
`If no match if found, however, thecall is allowed to be completed, and at
`
`the end of the call the mobile stationis disabled until a voice sample
`
`provided by a useris found to match with one of the stored voiceprints in
`
`the SIM card. This voice authentication process can also be overridden
`
`with a PIN number.
`
`According to a third embodimentof the present invention an
`
`intelligent network(IN) solution is provided in the communication
`
`networkinfrastructure to provide voice recognition authorization of a
`
`mobile user attempting to use, or currently using, a mobile station served
`
`by the network.
`
`The present invention provides voice recognition authorization in a
`
`public wireless environment. The mobile station handset can be
`
`controllably enabled or disabled depending on whetherthe voiceprints of
`
`the current user are found to match with stored voiceprints of authorized
`
`usersfor that particular mobile station. The present invention provides an
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`added security mechanism to reduce and/or prevent the unauthorized
`
`use of mobile stations, thus reducing the amountof lost revenuesto
`
`wireless providers.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`Figure 1 is a block diagram of a communication network servicing
`
`mobile stations according to the present invention;
`
`Figure 2 is a block diagram of a mobile station according to the
`
`present invention storing voiceprints of authorized users in a SIM card
`
`10
`
`and provided with a voice recognition module;
`
`Figure 3 is a block diagram of a mobile station according to an
`
`alternative preferred embodimentof the present invention having
`
`voiceprints stored on the SIM card, whereby speech is monitored by the
`
`mobile station during a call and compared withthe stored voiceprints to
`
`15
`
`authorize the mobile user;
`
`Figure 4 is a block diagram of an IN solution to the present
`
`invention whereby an IN nodeof the network is provided with functional
`
`modules to perform voice recognition authorization of a mobile subscriber
`
`using the network;
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`Figure 5 is a block diagram of the functional modules comprising
`
`the IN nodeof Figure 4; and
`
`Figure 6 is a flow diagram of the methodof the present invention
`
`comparing voice samples of a user with recorded voiceprints of
`
`authorized users to authenticate a mobile user.
`
`DESCRIPTION OF THE PREFERRED EMBODIMENT
`
`Figure1 illustrates a block diagram of a communication network 10
`
`10
`
`according to the preferred embodimentof the present invention.
`
`Communication network 10 preferably comprises a wireless telephony
`
`network seen to include an originating mobile station 12 coupled by an RF
`
`communication link to a servicing originating network 14. The
`
`originating mobile station 12 is preferably a wireless communication
`
`device comprising a wireless mobile station, but may also be a fixed
`
`wireless station. The mobile station 12 may operate based on any number
`
`of communication standards including AMPS, TDMA, D-AMPS, GSM,
`
`and IS-95 protocols. The originating network 14 is seen to be coupled to a
`
`transit network or communication link 16, which may comprise a public
`
`switched telephone network (PSTN), but could also comprise of other
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`networksincluding an optical network if desired. The transit network 16
`
`interfaces and communicateselectrical signals including digitized voice
`
`calls between originating network 14 and a terminating network 18.
`
`Terminating network 18 may be the sameas, or different than, the
`
`originating network 14, and may comprise of AMPS, D-AMPS, TDMA,
`
`GSM andIS-95 networks. Terminating network 18 is coupled to and
`
`services via an RF link a terminating mobile station 20, which may
`
`comprise of a fixed or mobile station such as a wireless cellular or PCS
`
`subscriber. The wireless stations and networks may have codecsto
`
`provide encoding and decodingof digital signals communicated over the
`
`transit network 16.
`
`The originating network 14is seento include a base transceiver
`
`station (BTS) 30 serving via a radio frequency (RF)link the originating
`
`mobile orfixed station 12. Each BTS 30 services multiple stations 12,
`
`although only oneis shownfor purposesofillustration andclarity.
`
`Originating network 14 is further seen to include a base switching center
`
`(BSC) 32 and a main switching center MSC 34. The BTS and BSC are
`
`sometimescollectively referred to as a base switchingstation (BSS). BSC
`
`32 interfaces voicecalls between multiple BTSs 30 and MSC 34, wherein
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`BSC 32 typically serves multiple BTSs 30, although only one is shown for
`
`purposesofillustrating the present invention. Similarly, MSC 34 services
`
`multiple BSCs 32, although only one is shownfor purposesofillustrating
`
`the present invention. MSC 34includesa visitor location register (VLR)
`
`which includes and stores various information of the stations 12 currently
`
`being served by the originating network 14.
`
`Terminating network 18is seen to include a BTS 40 serving the
`
`terminating station 20, and typically serves multiple stations20.
`
`Terminating network 18 is further seen to include a BSC 42 and MSC 44.
`
`Terminating network 18 mayoperate according to the same operating
`
`protocol as originating network 14,i.e., both are GSM networks, or, the
`
`terminating network 18 may bedifferent from the originating network 14,
`
`i.c., the originating network is GSM andthe terminating network may be
`
`based on AMPS, D-AMPS, TDMAorIS-95 protocols. MSC 44 includes a
`
`VLR for maintaining a register of information for all stations 20 currently
`
`being served by the terminating network 18.
`
`Transit network 16 is preferably a PSTN. Originating MSC 34 and
`
`terminating MSC 44 exchange digitized voice data thereover, which are
`
`preferably encoded in pulse code modulation (PCM) format, and
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`transmitted at about 64 kbps. Although PCMis a preferred encoding
`
`format, other encoding formats are available according to the present
`
`invention. Likewise, other transfer speeds other that 64 kbps are also
`
`contemplated by the present invention. Generally, the digitized voice
`
`data transferred over transit network 16 can be in any format whichis
`
`compatible and supported byboth the originating network 14 and the
`
`terminating network 18.
`
`Referring now to Figure 2, there is shown a block diagram of
`
`mobile station 12 according to a first preferred embodiment ofthe present
`
`invention. The mobile station 12 is provided with integrated voice
`
`recognition capabilities to verify authorized users of the mobile station 12
`
`prior to a call being initiated between mobile station 12 and the serving
`
`originating network 14.
`
`Mobilestation 12 is seen to be comprised of a microphone 50 for
`
`receiving voice signals of the mobile user, this microphone 50 being
`
`connected to and providing the voice signals on line 52 to a transceiver 54.
`
`Transceiver 54 can be any of several conventional transceivers, and
`
`modulates the voice signal provided on line 52 to provide an RF carrierto
`
`antenna 55. In the case of a digital mobile station 12, the transceiver 54 or
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`other components mayfirst digitize the analog voice signals provided on
`
`line 52 through analog sampling, and then mayfurther encode the
`
`digitized voice using a vocoder orcodec according to an encoding
`
`algorithm depending on the communication standard that mobile station
`
`12 is based on i.e. GSM, TDMA, and CDMA.
`
`Still referring to Figure 2, mobile station 12 can be seen to further
`
`include an improved Subscriber Interface Module (SIM) card 56 according
`
`to the preferred embodimentof the present invention. SIM card 56
`
`includes typical standard features of conventional SIM cards including
`
`memory storing particular subscriber information including the mobile
`
`station serial number and a codeindicative of the manufacture of the
`
`mobile phone. Accordingto the present invention, the microphone50 is
`
`connected to the SIM card 56 and provides a copy of the user’s voice
`
`received by microphone50 to the SIM card 56. SIM card 56is further
`
`comprised of RAM memory,logic and digital sampling components
`
`capable of sampling the voice of users to be authorized to usc the mobile
`
`station 12. The sampled voice formsa voiceprint, these voiceprints being
`
`stored in the RAM memoryof the SIM card providing an index of
`
`voiceprints of authorized users for the particular mobile station 12.
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`Alternatively, the memory can be providedin circuitry elsewhere
`
`in the mobile station 12, and does not necessarily need to reside on the
`
`SIM card 56 itself, although this is the preferred embodiment. The entry
`
`of the voiceprints of authorized users can be entered into the RAM
`
`memory of SIM card 56 through a menu driven display on the mobile
`
`station 12 and mayrequire a PIN numberfor entry. The voiceprints can
`
`comprise, for instance, the user stating his/her nameora particular
`
`password easily remembered bythe authorized user. Thesize of the
`
`RAM memoryfor storing authorized users is adequate for storing an
`
`10
`
`adequate numberof authorized users intended to be authorized.
`
`Mobile station 12 is further seen to comprise a voice recognition
`
`module 60 functionally connected and responsive to both microphone 50
`
`and SIM card 56. Voice recognition module 60 compares the received
`
`samples of a user’s voice from microphone 50 with the voiceprints stored
`
`15
`
`on SIM card 56 to determine a match. If a match between the voice
`
`spoken through the microphone50 is matched with oneof the voiceprints
`
`stored on SIM card 56, then the mobile user is allowed to use the mobile
`
`station 12 to place a call, i.e. the handset 12 becomesactive. Mobile station
`
`12 is further provided with a fraud detection module 62 responsiveto the
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`voice recognition module 60. If no match is found between samplesof the
`
`voice spoken by the user via microphone 50 with oneof the voiceprints
`
`stored in SIM card 56, as determined by voice recognition module 60, a
`
`signal is generated by voice recognition module 60 indicative of this
`
`mismatchonline 64, and fraud prevention module 62 respondstothis
`
`signal to disable handset 12, such as by disabling transceiver 54 via line 68.
`
`Transceiver 54 remains in the disabled mode until voice recognition
`
`module 60 is able to detect a match between samplesof the voice of the
`
`user provide via microphone 50 with oneof the voiceprints stored in SIM
`
`10
`
`card 56. Uponfinally detecting a match, voice recognition module 60 will
`
`senda signalvia line 64 to fraud prevention module 62. Fraud prevention
`
`module 62 will responsively send a signalvia line 68 to enable transceiver
`
`54 for transmission of voice via an RFcarrier to the serving originating
`
`network 14. Alternatively, the handset 12 can bereactivated by entering
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`15
`
`an authorized PIN number. This feature is advantageous when an
`
`authorized user has a modified voice i.e. has a cold. This PIN number
`
`needsto be re-entered on a call-by-call basis. As a note, 911 calls do not
`
`require voice authorization to proceed.
`
`Voice recognition module 60 preferably comprisesa digital signal
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`processor (DSP) with embedded software for analyzing and comparing
`
`voice of the user, provided by microphone 50, with the digital voiceprints
`
`stored in the memory of SIM card 56. The present invention achieves
`
`technical advantages by embeddingthis voice recognition capability into
`
`the wireless mobile subscriber 12 to provide a voice recognition
`
`authorization feature ensuring that only authorized users of the mobile
`
`station 12 can initiate a call to the serving network 14. The voiceprints
`
`stored in SIM card 56 each have a predetermined datasize.
`
`The voice recognition module 60 is programmed with
`
`10
`
`predetermined threshold which determines the extent that the voice
`
`sample given by the user has to match one of the voiceprints stored in SIM
`
`card 56. For instance, a 75% match may be determined a sufficient match.
`
`A matchthat falls below 75% triggers fraud prevention module 62 to
`
`inhibit the operation of transceiver 54.
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`15
`
`Referring now to Figure 3, there is shown a second preferred
`
`embodimentof the present invention similar to the embodimentof Figure
`
`2, wherein like numerals refer to like elements. In this embodiment, a
`
`mobile station 70 is provided with a speech monitoring module 72 being
`
`responsively connected to microphone 50 and SIM card 56. In this
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`embodiment, speech monitoring module 72 compares samplesof a user’s
`
`voice provided via microphone 50 during a call to the voiceprints stored
`
`in SIM card 56 to determine a match andestablish the current user as an
`
`authorized or an unauthorized user of the particular mobile station 70.
`
`Duringa call, speech monitoring module 72 continuously samples the
`
`user's voice until a match to one of the voiceprints stored in SIM card 56is
`
`detected. If by the termination of the call a match is not found between
`
`samples of the users voice and the voiceprints stored in SIM card 56, an
`
`outputsignal is provided on outputline 74 to fraud prevention module 62
`
`indicative of a mismatch, and fraud prevention module 62 responsively
`
`inhibits the operation of the mobile station 70, such as by disabling
`
`transceiver 54 via line 68. The transceiver 54 remains inhibited from
`
`further usc until a voice sample is provided via microphone 50 andis
`
`determined by speech monitoring module 72 to match one of the
`
`voiceprints stored in SIM card 56. Speech monitoring module 72 also has
`
`a DSPdigitizing the analog voice signals of the user and comparing the
`
`digitized samplesto the digital voiceprints stored in SIM card 56. Similar
`
`to the first embodiment, an authorized PIN numbercan be entered into
`
`the handsetto reactivate the handset. Moreover, 911 calls are not
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`prevented by the voice authentication process.
`
`Referring now to Figure 4, there is shown a block diagram of a
`
`third embodimentof the present invention providing an intelligent
`
`network (IN) solution providing voice recognition of a mobile subscriber
`
`using mobile station 12. Communication network 10 is seen to include an
`
`external IN node 80 functionally coupled to the originating network 14,
`
`shownas being functionally coupled to MSC 34. However, the locationof
`
`the IN node 80 with respect to the devices of originating network 14 can
`
`vary from system to system as desired, and for instance, can be connected
`
`to the BSC 32 if desired.
`
`IN node 80 provides an IN solution including
`
`functional modules providing voice recognition of mobile users.
`
`Referring to Figure 5, these functional modules include a voiceprint
`
`recording module 82 which records voiceprints and/or voice samples of
`
`all valid mobile station users for each of several mobile stations 12 served
`
`by the network 10. A voice monitoring module 84 compares the voice
`
`samples from a current mobile station user using, or attempting to use,
`
`mobile station 12 with those voiceprints stored in the voiceprint recording
`
`module 82. A fraud prevention module 86 is an application which
`
`handles identified fraudulent use of the mobile station 12. If voice
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`monitoring module 84 does not establish a match between voice samples
`
`of the current mobile station user with one of the voiceprints stored in the
`
`voiceprint recording module 82 associated with the particular mobile
`
`station 12, the fraud prevention module 86 responsively provides a
`
`network message back throughthe originating network 14 to mobile
`
`station 12 to disable the mobile station 12 from further use until an
`
`authorized voiceprint is provided from mobile station 12 to the IN node
`
`80.
`
`Referring now to Figure6, there is shown a methodof the present
`
`10
`
`invention at 90. At step 92, voice samples or voiceprints of authorized
`
`users are stored into a voiceprint storage location, such as SIM card 56
`
`located at the mobilestation, or into the voiceprint recording module 82of
`
`IN node80 as shownin Figure5.
`
`At step 94, the voice sample of a current user is compared to the
`
`15
`
`recorded voiceprints to perform authentication of the current mobile
`
`station user. This is done by voice recognition module 60, speech
`
`monitoring module 72, or voice monitoring module 84.
`
`At step 96, it is determined whetherthe current user is an
`
`authorized user by analyzing the results of the comparison of step 94.
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`18
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`This determination is performed by the voice recognition module 60 in
`
`Figure 2 prior to a call being placed, by the speech monitoring module 72
`
`in Figure 3 when a call is underway, and by the voice monitoring module
`
`84 in Figure 5 using the IN solution.
`
`Next, at step 98, a call is processed depending on whetheror not a
`
`current user has been authorized. The step takes the form of either
`
`preventing future calls until an authorized user is identified for the
`
`embodimentof Figure 2, allowing the currentcall to continue but
`
`preventing further calls at the conclusion of the current call in the
`
`10
`embodimentof Figure 3, and for the IN solution shownin Figure5all
`
`calls can be prevented until an authorized user has been determined, or
`
`the current call can be continue while preventing future calls, depending
`
`on the algorithm chosen to be programmed into IN node80.
`
`Thoughthe invention has been described with respect to a specific
`
`15
`
`preferred embodiment, many variations and modifications will become
`
`apparentto thoseskilled in the art upon reading the present application.
`
`It is therefore the intention that the appendedclaims be interpreted as
`
`broadly as possible in view of theprior art to includeall such variations
`
`and modifications.
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`17
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`WE CLAIM
`
`1.
`
`A mobile wireless communications device for use in a wireless
`
`communications network, comprising:
`
`an input device for receiving voice signals of a current user;
`
`storage means for receiving and storing a voice sample of at least
`
`one authorized user;
`
`a speech comparison module comparing received voicesignals of
`
`the current user with said stored voice samples and generating an output
`
`10
`
`signal indicative of if the current user is one of said authorized users; and
`
`meansenabling and disabling said device as a function of said
`
`outputsignal.
`
`2.
`
`The device specified in Claim 1 wherein said storage means
`
`15
`
`comprises a SIM card.
`
`3.
`
`The device specified in Claim 2 wherein said input device
`
`comprises a microphone.
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`18
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`20
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`4.
`
`The device specified in Claim 1 wherein said mobile wireless
`
`communications device comprises a wireless telephone.
`
`5.
`
`The device specified in Claim 1 wherein said received voice signals
`
`are compared with said stored voice samplesprior to said device
`
`communicating said voice signals to the wireless communications
`
`network.
`
`6.
`
`The device specified in Claim 5 wherein said device is disabled
`
`10
`
`prior to transmitting said voice signals to the communications networkif
`
`the currentuser is not identified as one of said authorized users.
`
`7.
`
`The device specified in Claim 1 wherein said received voicesignals
`
`are compared with said stored voice samples while said deviceis
`
`15
`
`communicating said voice signals to the wireless communications
`
`network.
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`19
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`8.
`
`The device specified in Claim 1 wherein said device is disabled
`
`after said device completes communicating said voice signals duringacall
`
`to the wireless communications network.
`
`9.
`
`The device specified in Claim 1 wherein said device further
`
`comprises a display, wherein said display displays a visual message as a
`
`function of said output signal indicative of if said current user is
`
`recognized as one of said authorized users.
`
`10
`
`10.
`
`A wireless communications network, comprising:
`
`network meansfor establishing a wireless telephony call between a
`
`wireless originating communications terminal and a terminatingstation;
`
`and
`
`fraud prevention means having a voice recognition meansfor
`
`15
`
`selectively authorizing usc of said wireless originating communications
`
`terminal with said network meansas a function of voice samples provided
`
`by a user attemptingto use said wireless originating communications
`
`terminal.
`
`20
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`11.‘
`
`The device specified in Claim 10 wherein said fraud prevention
`
`means comprises an IN node functionally coupled to said network.
`
`12.
`
`A method of authenticating a mobile user attempting to use a
`
`wireless mobile station in a wireless communications network, comprising
`
`the steps of;
`
`storing a voice sample of at least one authorized mobile user in a
`
`first storage means;
`
`obtaining voice samples of a current mobile user;
`
`10
`
`comparing said voice samples of the current mobile user with said
`
`stored voice samples of authorized mobile users; and
`
`setting the operability of said wireless mobile station as a function
`
`of compared voice samples.
`
`15
`13.|The method as specified in Claim 12 wherein said mobile station is
`
`disabled when the current user is not identified as one of said authorized
`
`users.
`
`21
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`14.
`
`The methodas specified in Claim 12 wherein said voice samples of
`
`the current user are obtained prior to establishing a call between said
`
`wireless mobile station and said wireless communications network.
`
`15.|The methodasspecified in Claim 12 wherein said voice samples of
`
`the current user are obtained while a call is established betweensaid
`
`wireless mobile station and said wireless communications network.
`
`16.
`
`|The method as specified in Claim 14 wherein mobilestation is
`
`10
`
`prevented from use until the voice sample of the current mobile useris
`
`recognized as oneof said stored voice samples of authorized mobile users.
`
`17.|The methodas specified in Claim 15 wherein said mobile stationis
`
`prevented from further use after said established call is terminated until
`
`15
`
`the voice sample of the current mobile user is recognized as one of said
`
`stored voice samples of authorized mobile users.
`
`18.|The methodas specified in Claim 12 wherein said voice samplesof
`
`said authorized mobile users are stored in a SIM cardof said wireless
`
`22
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`mobile station.
`
`19.
`
`The methodas specified in Claim 12 wherein said voice samplesof
`
`said authorized mobile users are stored at a node of the wireless
`
`communications network.
`
`20.
`
`The methodas specified in Claim 12 further comprising the step of
`
`displaying a messageat said wireless mobile station indicating said
`
`wireless mobile station is disabled if said compared voice samples of the
`
`10
`
`current mobile user and one of said voice samples of said authorized users
`
`do not match.
`
`23
`
`25
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`25
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`
`
`
`
`
`VOICE
`FRAUD
`RECOGNITION
`
`PREVENTION
`
`MODULE
` 62
`
`MODULE
`
`
`FIG. 2
`
`
`
`
`
`
`
`
`
`SPEECH
`FRAUD
`MONITORING
`
`
`PREVENTION
`
`MODULE
`MODULE 62
`
`
`
`
`FIG. 8
`
`26
`
`26
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`2/2
`
`
`
`82
`
`VOICE
`PRINT
`RECORDING
`
`FRAUD
`
`PREVENTION
`MODULE
`
`86
`
`80
`
`
`
`
`84
`
`VOICE
`MONITORING
`
`FIG. 5
`
`
`
`
`
`
`
`
`RECORD AUTHORIZED USER'S
`VOICE SAMPLES OR VOICE PRINTS
`
`COMPARE CURRENT USER'S VOICE
`SAMPLES TO RECORDED VOICE SAMPLES
`
`DETERMINE IF CURRENT
`USER IS AN AUTHORIZED USER
`
`~
`
`PROCESS CALL
`
`FIG. 6
`
`27
`
`
`
`
`
`
`27
`
`

`

`INTERNATIONAL SEARCH REPORT
`
`
`
`Intern. ..znal Application No
`PET/US 99/22203
`
`
`o
`A. CLASSIFICATION
`SUBJECT MATTER
`
`
`HoaMi/66IPC 7 H04Q7/38
`
`
`Accordingto International Patent Classification (LPC) or to both nationalclassification and IPC
`8. FIELOS SEARCHED
`
`
`Minimum documentation searched (classification system followed by classification symbols)
`IPC 7
`HO4M H04Q
`
`
`
`Documentation searched other than minimum documentation to the extent that such documents are included in the fields searched
`
`
`Electronic data base consulted during the international search (nameof data base and, where practical, search terms used)
`
` C, DOCUMENTS CONSIDERED TO BE RELEVANT
`
`Category °|Citation of document, with indication, where appropriate, of the relevant passages Relevant to claim No.
`
`
`
`|]
`
`
`
`
`
`
`
`
`
`“User Authentication in
`LAPERE ET AL:
`Mobile Telecommunication Environments
`Using Voice Biometrics and Smartcards"
`FOURTH INTERNATIONAL CONFERENCE ON
`INTELLIGENCE IN SERVICES AND NETWORKS,
`TS&N °97. PROCEEDINGS, 27 - 29 May 1997,
`pages 437-443, XP002106691
`Cernobbio, Italy
`paragraphs ‘0004! ‘0006!
`
`X
`
`US 5 805 674 A (ANDERSON JR VICTOR C)
`8 September 1998 (1998-09-08)
`
`abstract; figures 1,2
`
`
`
`
`
`
`
`
`
`
`
`
`
`
`1-7,
`10-19
`
`13,4
`1
`
`
`
`“T"
`
`[] Further documentsare listed in the continuation of