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Altrons location based GSM /UMTS mobile terminals trackingsystem (MTT S) for mobile providers and law enforcementagencies1. Overview

MTTShardwareandsoftwareplatformisusedforseamlessGSM/UMTSmobileterminalstrackingon

theterritorieswithGSMorUMTScoverage.

ThefollowingfeaturesofMTTSareuniqueandtodatehaveneverbeenimplementedbyother

vendorsofsimilarLBS(Location-basedservice)systems:

Thesystemsupportssimultaneousoperationwithupto16mobileoperators.

MTTSallowsusertodetectthecountrywherethemobileterminalhasmovedtoandwasregisteredunderroamingscenario.Optionally,thesystemcansupportreallocationdetection

oftheroamingsubscriberinanycountryoftheworldandforanyservingmobileoperator

network.

And,mostimportantly,MTTSplatformisnottailoredtoGSMequipmentmanufacturersproprietaryspecificationsandcanbeusedacrossanyknowntypeofknownNetworkSwitching

Subsystem.

Accuracyformobileterminallocationdetectioninmostcasesvariesfrom300to700metersinurban

conditionsandabout1500-5000metersoutsidethecity.Thisfigurelargelydependsonthemobile

operatorsbasestationssitesdensityineveryselectedregion.

MTTSsupportsupto1000locationdetectionrequestsfromseveralusersperhour.Inaddition,user

canpresetanydesiredinformationupdatetimeframe(forexamplefrom1to45minutes)toenable

automaticreal-timemobileterminalstracking.

Also,itispossibletosetupmultipleremoteworkingplaceswithInternetaccessandenabledVPN

connectivity,oractivateremoteaccessfromanyauthorizedsmartphone.OperatorofMTTScanwork

fromanyplaceintheWorldusingreliableVPNconnectionthroughInternet,orwithaseparate

dedicateddatachannel(forexample,VSATlink).

ThebasicfunctionalityofMTTSallowsdetectingthemobileterminallocationbyanalyzingCGI (Cell

Global Identifier) datareceivedfromtherelevantmobileswitchcontrollerinterconnectedtoMTTSvia

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GSMMAPSS7(ISUP/MTP)links.

MTTSoperatorworkingplacecanbeeasilyintegratedwithAltronsMTLS(mobiletrackingand

locationsystem(GSM/UMTSGrabber))cellphoneslocationdetectionportablesystemthus

significantlyincreasingtheoverallsolutioneffectiveness.

Andfinally,thecostofMTTSsolutionisverycompetitivecomparedtosimilarsolutionsbyother

vendors.

2. MTTS com ponents

Theplatformincludesbothhardwareandsoftwarecomponents.

2.1. HardwareMTTShardwareconsistsofControlServer(CS)andseveralWorkstations(WS).ControlServer(CS)connectstoOperatorsMSC(MobileSwitchCentre)(HLR(HomeLocationRegister)subsystem)using

E1interface.

UserWScanbesetupatanypersonalcomputerwithInternetbrowsersupportingJavaScriptand

CookiesandhavingsecuredconnectiontotheCS.ThebasicMTTSconfigurationincludes5WSs.

2.2. Software

2.2.1. Control Server (CS) software

MTTSsoftwareontheCSsideprocessestherequestsfromtheauthorizedusersWS,interrogating

mobileoperatorHLR.OncetheinformationfromtheHLRisreceived,theCSperformssearchthrough

thebasestationsdatabaseandgeneratestargetmobileterminallocationreport.Simultaneously,in

ordertoincreaselocationdetectionaccuracy,theCScanuseeitherGoogleorYandexcellsitesdata.

AllrequestsareloggedonCS.

2.2.2. Work S tation (WS) so ftwareClientWorkstationsoftwareconsistsofuserWebinterfaceandisusedtoperformmobileterminal

locationsearchbasedoneitherMDISDN(MobileStationIntegratedServicesDigitalNumber)orIMSI

(InternationalMobileSubscriberIdentity),andtoseerelevantrequestslogs.

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TheControlServerprocessestherequestandgeneratesareportcontainingthefollowinginformation:

Requestdateandtime,userID MobileterminalIMSIandCGI(CellGlobalIdentifier) Servingcellularbasestationlocationanditscoverageareawithinoneofsectors. PossiblemobileterminallocationdatabasedonGoogle/Yandexdata.

OptionRequestGoogle/Yandexallowsenable/disableadditionalrequeststoGoogleandYandex

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databases.

KeyMTTSparameters:

Numberoflocationdetectionrequests upto1000perhour

Requestshistory(log) upto64000events

Standard GSM/UMTS

Numberofconnectedmobileoperators upto16

Averageaccuracyforcoordinateddetection 300-5000meters

Averagerequestprocessingtime from5to12seconds

3. Da ta required for enabling M TTS functionality

Thefollowinginitialdataisrequiredtoenabletheserviceandisaresponsibilityoftheenduser:

1.AlistofexistingNSSelementsandcellularbasestationsaspertablebelow:

BTSNr

BTS

CGI Antennaazimuth

Antenna

Coveragearea

radius,meters(corresponding

toazimuth)

Address latitude longitude

2.SS7signalingcodeforinterconnectingMTTSoperatorworkplace

3.LinktolocalGSMoperatorMSC(G.703interface,1SS7link).

3.GT(GlobalTitle)forMTTSoperatorworkplaceinterconnection

4.SS7andSCCPpre-settingsatoperatorside.

5.AlistofHLRsandtheirGTs(GlobalTitle).

6.AlistofMSISDN/IMSIrangesforeachHLR.