WO2001020944A1 - Systeme et procede de positionnement d'une station mobile - Google Patents

Systeme et procede de positionnement d'une station mobile Download PDF

Info

Publication number
WO2001020944A1
WO2001020944A1 PCT/US2000/021690 US0021690W WO0120944A1 WO 2001020944 A1 WO2001020944 A1 WO 2001020944A1 US 0021690 W US0021690 W US 0021690W WO 0120944 A1 WO0120944 A1 WO 0120944A1
Authority
WO
WIPO (PCT)
Prior art keywords
mobile telephone
identification information
area
information
memory
Prior art date
Application number
PCT/US2000/021690
Other languages
English (en)
Inventor
Jerry Woo-Sam
Allen Lee
Original Assignee
Ericsson Inc.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ericsson Inc. filed Critical Ericsson Inc.
Priority to AU66262/00A priority Critical patent/AU6626200A/en
Publication of WO2001020944A1 publication Critical patent/WO2001020944A1/fr

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/04—User notification, e.g. alerting and paging, for incoming communication, change of service or the like multi-step notification using statistical or historical mobility data

Definitions

  • the present invention relates to a system and method for determining the location of a mobile telecommunications terminal, and particularly to a system and method for locating a mobile telephone within a building or compound.
  • Telephone call distribution systems are presently used by companies for receiving incoming telephone calls and forwarding the telephone calls to the appropriate individual, such as to an individual's mobile telephone. Communications systems even exist in which incoming calls to an employee's wireline desk telephone are automatically forwarded to the employee's mobile telephone in the event the wireline desk telephone is unanswered. There are circumstances, however, in which an employee's mobile telephone should not receive an incoming call. For instance, if an individual is in an important meeting or if a medical provider is in surgery, it may not be best to forward a telephone call thereto. In such circumstances, the location of an individual is best known before a telephone call is forwarded thereto. Companies thus have an interest in determining the location of an individual, such as an employee, before forwarding a telephone call to a mobile telephone used thereby.
  • Still another object of the present invention is to provide a mobile telephone positioning system and method which is capable of generating reports pertaining to the movement of mobile telephones within a building or other area.
  • the present invention overcomes shortcomings in existing positioning systems and satisfies a significant need for a system and method for determining a position of an active mobile telephone within a predefined area, such as a building or compound.
  • the present invention is adapted for use by companies as part of or in conjunction with conventional communications systems maintained thereby.
  • the building or other predefined area is partitioned into a plurality of zones, with each zone including one or more cells defined therein.
  • Each cell is associated with a base station such that a mobile telephone located within the cell communicates with the corresponding base station over the air interface.
  • Each base station communicates with a telecommunications switch via a radio exchange. In this way, a mobile telephone located within any one of the cells is capable of participating in a speech communication.
  • each active mobile telephone which is not engaged in a speech communication periodically transmits a distinct identification signal.
  • T h e identification signal is received by the base station corresponding to the cell in which the transmitting mobile telephone is located.
  • the identification signal received by the base station is forwarded to the switch, whereupon the identification information is compared with a list of identification data to determine the owner of the mobile telephone.
  • the switch is capable of determining the particular zone or cell from which the mobile telephone transmitted the identification signal as well as the time spent therein.
  • the switch determines that a mobile telephone has entered a cell
  • the entered cell is logged in a database together with date and time information relating to the cell entry.
  • a timer is activated and begins counting.
  • the switch determines, based upon subsequent transmissions of the identification signal by the mobile telephone, that the mobile telephone has exited the cell and has entered a new cell
  • the timer is stopped and date/time information is stored into the database to document the entry into the new cell and exit from the present cell .
  • the timer is stopped and the value thereof is logged in the database to document the mobile telephone ceasing transmission in the cell.
  • the present invention further includes an interface for accessing the database via a terminal or computer, and software for compiling information stored in the database and generating reports relating to the presence of mobile telephones in the predefined area.
  • Data retrieved from the database may be parsed by telephone user, by zone or cell, by time or date, etc.
  • the present invention may provide a report showing every mobile telephone located in a selected cell, or showing each cell in which a particular mobile telephone was located, together with date/time information and mobile telephone user identification .
  • cell information from the database may be accessed periodically so that the positioning of one or more mobile telephones may be monitored in substantially real time.
  • the present invention may serve as a surveillance system.
  • Figure 1 is a block diagram of the present mobile communications system according to a preferred embodiment of the present invention
  • Figure 2 is a first flow chart illustrating a first set of operations of the mobile communications system according to the embodiment of Figure 1 ;
  • Figure 3 is a second flow chart illustrating a second set of operations of the mobile communications system according to the embodiment of Figure 1;
  • Figure 4 is an exemplary report generated by the mobile communications system according to the preferred embodiment thereof .
  • Mobile communications system 1 preferably provides conventional voice and other communication to one or more mobile telephones 2 which are situated within the predefined area 3 served thereby.
  • Predefined area 3 may preferably be the area within a building, compound or other relatively small geographical area.
  • mobile communications system 1 is capable of determining the position of one or more active mobile telephones 2 in predefined area 3 served thereby.
  • the predefined area 3 is divided into a number of zones 4, with each zone 4 being further divided into one or more cells 5.
  • mobile communications system 1 includes a base station 6 corresponding thereto.
  • Each base station 6 is associated with at least one distinct cell 5 such that mobile communications system 1 provides mobile telephone service to a mobile telephone 2 via the particular base station 6 corresponding to the cell 5 in which the mobile telephone 2 is located.
  • mobile communications system 1 further includes a switch 7 which controls telephone calls between one or more mobile telephones 2 and terminals in other telephone and/or data systems.
  • Mobile communications system 1 may further include a radio exchange 8 which communicates with each base station 6, and a mobility server 9 which communicates directly with radio exchange 8 and switch 7 as is known in the art.
  • each mobile telephone 2 preferably includes necessary software, hardware and/or firmware for transmitting an identification signal.
  • the identification signal for each mobile telephone 2 preferably includes a unique code that is transmitted over a data channel .
  • Mobile telephone 2 periodically transmits the identification signal. For example, mobile telephone 2 may transmit its identification signal every five seconds. It is understood, however, that the frequency with which mobile telephone 2 transmits the identification signal may vary and depend upon a variety of factors, such as channel bandwidth and desired degree of accuracy in tracking mobile telephone 2 within predefined area 3.
  • Mobile telephone 2 preferably periodically transmits its identification signal whenever mobile telephone 2 is active and not involved in a speech communication.
  • Each base station 6 is preferably capable of receiving the identification signal from mobile telephone 2 and forwarding the received identification signal to switch 7.
  • Switch 7 preferably includes or is associated with a memory device 10 for storing data relating to the location of mobile telephone 2 within predefined area 3.
  • switch 7 records temporal information in memory device 10 relating to the positioning of mobile telephone 2. The temporal information may be subsequently retrieved from memory device 10 for review.
  • the temporal information is stored in a database 11 in memory device 10 together with corresponding cell information.
  • switch 7 determines the current cell 5A for mobile telephone 2, i.e., the cell 5 from which mobile telephone 2 transmitted the identification signal.
  • switch 7 determines whether mobile telephone 2 has recently entered the current cell 5A, by comparing current cell 5A with the cell information stored in database 11 relating to the cell 5 from which mobile telephone 2 transmitted the identification signal immediately prior to the most recent transmission thereof.
  • Switch 7 concludes that mobile telephone 2 recently entered the current cell 5A upon determining that current cell 5A does not match the cell information stored in database 11 relating to the cell 5 from which mobile telephone 2 transmitted the identification signal immediately prior to the most recent transmission thereof. Upon reaching such a conclusion, cell information and temporal information pertaining to the entry of mobile telephone 2 into current cell 5A are stored in database 11.
  • the temporal information stored in database 11 is preferably date and time information.
  • switch 7 stores the date and time data to correspond to both the current cell 5A into which the mobile telephone 2 recently entered as well the cell 5 from which the mobile telephone exited to enter the current cell 5A.
  • database 11 documents the total amount of time mobile telephone 2 spends in each cell 5.
  • switch 7 preferably includes a timer 12 which is selectively activated and deactivated by switch 7.
  • Timer 12 is initialized and begins to count when switch 7 determines that mobile telephone 2 has just recently entered a current cell 5A.
  • Timer 12 is deactivated or stops counting when switch 7 determines that mobile telephone 2 is no longer transmitting its identification signal from the current cell 5A. This determination could result from mobile telephone 2 being inactive and/or turned off, or mobile telephone 2 exiting current cell 5A and entering a different cell 5.
  • the time period stored in timer 12 is stored in database 11, together with information pertaining to the corresponding current cell 5A.
  • Database 11 may be updated with current cell information and corresponding temporal information upon the occurrence of a handover operation in which mobile telephone 2 is in a speech or voice connection while roaming between two cells 5.
  • switch 7 determines the new current cell 5A from which mobile telephone 2 is engaged in a speech connection, and updates database 11 with both the new current cell 5A and the date/time information corresponding thereto.
  • Switch 7 additionally activates timer 12 upon the occurrence of a cell handover operation. Consequently, database 11 is suitably updated at all times when mobile telephone 2 is active.
  • mobile communications system 1 may include computing element 13 having software for retrieving current cell and corresponding temporal information, and generating reports which document the whereabouts of mobile telephone 2. The reports may, for example, be in tabular form with entries thereof ordered by user, cell, date, time, etc.
  • Mobile communications system 1 may further include external database 14 to which database 11 may be occasionally downloaded using computing element 13.
  • computing element 13 may include software to substantially continuously or periodically access database 11, present a geographical image of predefined area 3, and depict the location of mobile telephone 2 therein based upon the current cell information for mobile telephone 2 stored in database 11.
  • mobile communications system 1 is capable of monitoring mobile telephone 2 in substantially real time.
  • base station 6 receives an identification signal from a mobile telephone 2 at step 20. The base station 6 then forwards the identification signal to switch 7 at step 21.
  • switch 7 identifies the particular mobile telephone 2 which transmitted the identification signal and determines the current cell 5A from which the identification signal was transmitted. The determination of the current cell 5A may be based upon determining which base station 6 forwarded the identification signal to switch 7 during step 21.
  • switch 7 determines at step 23 whether mobile telephone 2 recently entered current cell 5A.
  • Switch 7 makes this determination by retrieving cell information from database 11 for the cell from which mobile telephone 2 transmitted the identification signal immediately prior to the most recent transmission thereof, and comparing the current cell 5A to the retrieved cell information. A favorable comparison shows that mobile telephone 2 has not recently entered the current cell 5A, and a disfavorable comparison shows the reverse to be true.
  • switch 7 determines that mobile telephone 2 recently entered current cell 5A
  • switch 7 stores at step 24 time and date information in database 11.
  • the time information may be taken from the value of timer 12, which previously had been initialized and counting.
  • the time and date information is stored in database 11 to correspond to the current cell 5A so as to document the entry of mobile telephone 2 therein.
  • switch 7 determines at step 25 whether the identification signal received by base station 6 in step 20 is the start of a new series of periodic identification signals transmitted by mobile telephone 2. This step is performed in order to determine whether mobile telephone 2 had exited another cell 5 when entering current cell 5A or instead had been inactive immediately prior to being active and transmitting the identification signal therefrom. Switch 7 makes this determination by comparing the date and time information stored in database 11 during step 24 with date and time information which was most recently stored in database 11 for mobile telephone 2 prior to step 24.
  • database 11 includes information pertaining to both the entry and exit of mobile telephone 2 in cells 5 of the predefined area 3.
  • switch 7 determines that the identification signal received by base station 6 during step 20 is the start of a new sequence of periodic transmissions by mobile telephone 2, then switch 7 concludes that mobile telephone 2 had previously been inactive before transmission from current cell 5A, and does not store any exit date and time information in database 11.
  • timer 12 is initialized and activated at step 27 to begin counting.
  • the value in timer 12 will then correspond to the amount of time mobile telephone 2 remains active within current cell 5A.
  • switch 7 awaits the next identification signal from mobile telephone 2. If switch 7 determines at step 28 that mobile telephone 2 has failed to transmit another identification signal at the next predetermined time, then it is concluded that mobile telephone 2 has become inactive.
  • the value stored in timer 12 is then stored in database 11 at step 29 to indicate the time that mobile telephone 2 became inactive while in current cell 5A. Otherwise, step 29 is bypassed and the process is repeated over again for the reception of another identification signal from mobile telephone 2.
  • database 11 may be downloaded at step 30 to external database 14 ( Figure 3) .
  • the cell information and corresponding temporal (date/time) information may be retrieved at step 31 from external database 14, parsed, and compiled to generate reports at step 32 regarding the presence of mobile telephone 2 within predefined area 3.
  • the report may be parsed by the user of each mobile telephone 2, by the zone 4 or cell 5, etc.
  • An exemplary report is shown in Figure 4.
  • current cell information for mobile telephone 2 may be retrieved from database 11 at step 33, processed and displayed on computing element 13 at step 34 ( Figure 3) .
  • the display may illustrate a map of predefined area 3 showing the locations and boundaries of cells 5 and an up-to-date indication of each mobile telephone 2 therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

L'invention concerne un système et un procédé permettant de déterminer l'emplacement d'un téléphone mobile à l'intérieur d'un bâtiment ou d'une zone prédéfinie. Cette dernière est divisée en plusieurs zones cellulaires. Le système, quant à lui, comporte au moins un téléphone mobile qui émet périodiquement un signal d'identification unique, un dispositif de commutation et plusieurs stations de base, chacune étant associée à au moins une zone cellulaire distincte de façon qu'une station de base établisse une communication entre le téléphone mobile et le dispositif de commutation lorsque ledit téléphone se situe à l'intérieur de la zone cellulaire associée à la station de base. Lorsque les données d'identification émises par le téléphone mobile sont reçues par le dispositif de commutation, ce dernier détermine la zone cellulaire actuelle de laquelle le téléphone a émis le plus récemment les données d'identification, génère des données temporelles appartenant à l'émission la plus récente des données d'identification, et stocke de manière sélective les données de zone cellulaire actuelle et les données temporelles. Les données de zone cellulaire actuelle et les données temporelles stockées sont accessibles par un dispositif de calcul afin de rapporter le positionnement du téléphone mobile ou de surveiller, quasiment en temps réel, sa position à l'intérieur de la zone prédéfinie.
PCT/US2000/021690 1999-09-14 2000-08-09 Systeme et procede de positionnement d'une station mobile WO2001020944A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU66262/00A AU6626200A (en) 1999-09-14 2000-08-09 Mobile station positioning system and method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US39546399A 1999-09-14 1999-09-14
US09/395,463 1999-09-14

Publications (1)

Publication Number Publication Date
WO2001020944A1 true WO2001020944A1 (fr) 2001-03-22

Family

ID=23563150

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/021690 WO2001020944A1 (fr) 1999-09-14 2000-08-09 Systeme et procede de positionnement d'une station mobile

Country Status (2)

Country Link
AU (1) AU6626200A (fr)
WO (1) WO2001020944A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1448008A1 (fr) * 2003-02-13 2004-08-18 Telefonaktiebolaget LM Ericsson (publ) Positionnement intérieur de terminaux mobiles
WO2008063489A3 (fr) * 2006-11-17 2008-08-07 Lucent Technologies Inc Localisation d'une station mobile à l'intérieur d'un bâtiment
US7860518B2 (en) 2006-11-17 2010-12-28 Alcatel-Lucent Usa Inc. Locating a mobile station inside a building

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0583623A1 (fr) * 1992-07-27 1994-02-23 ALCATEL ITALIA S.p.A. Dispositif et méthode de localisation d'un objet ou d'une personne dans une zone géographique et émetteur et récepteur de localisation
US5408683A (en) * 1991-07-18 1995-04-18 Motorola, Inc. Method of anticipating a communication unit's location in a networked radio communications system
US5434904A (en) * 1992-07-21 1995-07-18 Hitachi, Ltd. Mobile termainal position information detection method and system using the method
NL9401663A (nl) * 1994-08-17 1996-04-01 Jaap Van Asselt Systeem voor het binnen een beperkt gebied of een gebouw lokaliseren van personen en alarmeren van een centrale.
US5519758A (en) * 1993-05-11 1996-05-21 France Telecom Radiotelephonic process for locating mobile subscribers and a radiotelephone installation for implementing the process
US5889770A (en) * 1994-04-08 1999-03-30 Nokia Telecommunicaitons Oy Location updating for a packet-switched data service in a mobile communciation system
EP0923256A2 (fr) * 1997-12-05 1999-06-16 MANNESMANN Aktiengesellschaft Procédé de localisation d'un terminal mobile pour un central de localisation, terminal et central de localisation correspondants
US5924040A (en) * 1996-11-20 1999-07-13 Telxon Corporation Wireless communication system having base station with adjustable power transceiver for locating mobile devices

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5408683A (en) * 1991-07-18 1995-04-18 Motorola, Inc. Method of anticipating a communication unit's location in a networked radio communications system
US5434904A (en) * 1992-07-21 1995-07-18 Hitachi, Ltd. Mobile termainal position information detection method and system using the method
EP0583623A1 (fr) * 1992-07-27 1994-02-23 ALCATEL ITALIA S.p.A. Dispositif et méthode de localisation d'un objet ou d'une personne dans une zone géographique et émetteur et récepteur de localisation
US5519758A (en) * 1993-05-11 1996-05-21 France Telecom Radiotelephonic process for locating mobile subscribers and a radiotelephone installation for implementing the process
US5889770A (en) * 1994-04-08 1999-03-30 Nokia Telecommunicaitons Oy Location updating for a packet-switched data service in a mobile communciation system
NL9401663A (nl) * 1994-08-17 1996-04-01 Jaap Van Asselt Systeem voor het binnen een beperkt gebied of een gebouw lokaliseren van personen en alarmeren van een centrale.
US5924040A (en) * 1996-11-20 1999-07-13 Telxon Corporation Wireless communication system having base station with adjustable power transceiver for locating mobile devices
EP0923256A2 (fr) * 1997-12-05 1999-06-16 MANNESMANN Aktiengesellschaft Procédé de localisation d'un terminal mobile pour un central de localisation, terminal et central de localisation correspondants

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1448008A1 (fr) * 2003-02-13 2004-08-18 Telefonaktiebolaget LM Ericsson (publ) Positionnement intérieur de terminaux mobiles
WO2004073341A1 (fr) * 2003-02-13 2004-08-26 Telefonaktiebolaget Lm Ericsson (Publ) Positionnement de terminaux mobiles dans un environnement interieur
WO2008063489A3 (fr) * 2006-11-17 2008-08-07 Lucent Technologies Inc Localisation d'une station mobile à l'intérieur d'un bâtiment
US7860518B2 (en) 2006-11-17 2010-12-28 Alcatel-Lucent Usa Inc. Locating a mobile station inside a building

Also Published As

Publication number Publication date
AU6626200A (en) 2001-04-17

Similar Documents

Publication Publication Date Title
US7577442B2 (en) Mobile location devices and methods
EP1188156B1 (fr) Procede et dispositif se rapportant a un systeme de radiocommunications bidirectionnelles pour emission de messages en fonction de la situation
US6957076B2 (en) Location specific reminders for wireless mobiles
KR101584364B1 (ko) 무선 신호를 사용하는 방법 및 장치
US6684068B1 (en) Method for transmitting a message to a mobile station
US20020052207A1 (en) Context tags for context-aware computer programs
EP1335622B1 (fr) Système pour contrôler la mobilité et terminal mobile de communication
US20040242240A1 (en) Location assisted communications mode switching
EP0497203A2 (fr) Système interactif pour contacter des mobiles visiteurs dans un réseau radio-téléphonique cellulaire
WO2000049818A1 (fr) Procede et appareil pour commander le balayage par une unite d'abonne
US20090293016A1 (en) Adaptation of the presence status of instant messaging
GB2328585A (en) Using Advanced Positioning System for Paging in a Cellular Communication System
MX2007007651A (es) Marcacion automatica para un dispositivo de comunicaciones inalambricas.
EP1834238A2 (fr) Procede et systeme de gestion d'evenements
US6735431B1 (en) Information communicating method, information providing apparatus, radio-communication system and radio-communication terminal
EP1071304A1 (fr) Procédé et dispositif pour joindre efficacement un terminal mobile dans un reseau cellulaire
US7068997B2 (en) Method for displaying roaming charge rate on mobile station
WO2001020944A1 (fr) Systeme et procede de positionnement d'une station mobile
CN1157093C (zh) 使用广播地址的通知报文识别用户区域的系统和方法
WO2001020945A1 (fr) Systeme et procede de traitement en fonction de l'emplacement d'appels telephoniques a des stations mobiles
KR100369595B1 (ko) 이동통신시스템에서 커버 영역 통계 방법 및 장치
KR20050035075A (ko) 무선 핸드세트들에 대한 비긴급 전화 번호들을 자동적으로갱신하는 방법
KR100425701B1 (ko) 이동통신 단말기의 단문 서비스 방법
EP1645153A2 (fr) Emission, recueil et suivi d'informations d'emplacement d'un terminal mobile
EP1569479B1 (fr) Méthode et appareil pour marqueur de localisation

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DE DK DK DM DZ EE EE ES FI FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP