SE513158C2 - Method and portable system for location of mobile phone - Google Patents

Method and portable system for location of mobile phone

Info

Publication number
SE513158C2
SE513158C2 SE9901183A SE9901183A SE513158C2 SE 513158 C2 SE513158 C2 SE 513158C2 SE 9901183 A SE9901183 A SE 9901183A SE 9901183 A SE9901183 A SE 9901183A SE 513158 C2 SE513158 C2 SE 513158C2
Authority
SE
Sweden
Prior art keywords
mobile telephone
signal
receiver
request
portable
Prior art date
Application number
SE9901183A
Other languages
Swedish (sv)
Other versions
SE9901183D0 (en
SE9901183L (en
Inventor
Bjoern De Bonnenfant
Original Assignee
Satsafe Mls Ab
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 Satsafe Mls Ab filed Critical Satsafe Mls Ab
Priority to SE9901183A priority Critical patent/SE9901183L/en
Publication of SE9901183D0 publication Critical patent/SE9901183D0/en
Priority to PCT/SE2000/000589 priority patent/WO2000059254A1/en
Priority to AU41594/00A priority patent/AU4159400A/en
Publication of SE513158C2 publication Critical patent/SE513158C2/en
Publication of SE9901183L publication Critical patent/SE9901183L/en

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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

The present invention relates to a method for locating an active mobile telephone (4) in a portable mobile telephone network where the network comprises at least one portable transmitter (1) and at least two portable receivers (2a, 2b, 2c), and where said network has a coverage area (12; 26) and comprises the steps of transmitting a request (5) from said transmitter to said active mobile telephone (4), receiving said request in said mobile telephone, transmitting a signal (11a, 11b, 11c) from the mobile telephone (4) caused by said request (5), receiving said signal in each respective receiver (2a, 2b, 2c), and analysing the received signals, whereby a positioning of said mobile telephone is done based on the received signals. The invention also relates to a portable mobile telephone system using the above method.

Description

15 20 25 513 158 2 laviner i huvudsak sker, ligger vid sidan om de preparerade nedfarterna och kan ha sämre täckning frán mobiltelefonnätet. Avalanches mainly occur, are located next to the prepared slopes and may have poorer coverage from the mobile telephone network.

Lösningen till ovanstående problem är att tillhandahålla en metod för att lokalisera en aktiv mobiltelefon i ett portabelt mobiltelefonnätverk enligt patentkrav 1 samt ett portabelt mobiltelefonsystem enligt patentkrav 5.The solution to the above problem is to provide a method for locating an active mobile telephone in a portable mobile telephone network according to claim 1 and a portable mobile telephone system according to claim 5.

En fördel med föreliggande uppfinning är att en person som hamnar i en lavin, och som har en mobiltelefon påslagen, kan lokaliseras snabbt.An advantage of the present invention is that a person who ends up in an avalanche, and who has a mobile phone switched on, can be located quickly.

En annan fördel med uppfinningen är att man inte behöver ha någon annan lokaliseringsanordning utifall att man skulle hamna i en lavin.Another advantage of the invention is that one does not need to have any other locating device in case one should end up in an avalanche.

Ytterligare_en fördel med uppfinningen är att utrustningen som krävs för att lokalisera en mobiltelefon är standardmässig, enkel att tillverka, och dessutom behövs endast ett fåtal funktioner i basstationen för att uppfinningen ska fungera.A further advantage of the invention is that the equipment required to locate a mobile telephone is standard, easy to manufacture, and in addition only a few functions in the base station are needed for the invention to work.

Uppfinningen kommer nu att beskrivas närmare med hänvisning till bifogade ritningar.The invention will now be described in more detail with reference to the accompanying drawings.

Kort beskrivning av ritningar Pig. 1 beskriver en utföringsform av föreliggande hppfinning där positionen hos mobiltelefonen bestäms av den emottagna signalens signalstyrka.Brief description of drawings Pig. 1 describes an embodiment of the present invention where the position of the mobile telephone is determined by the signal strength of the received signal.

Fig. 2 beskriver en utföringsform av föreliggande uppfinning där positionen hos mobiltelefonen i huvudsak bestäms av den emottagna signalens riktning. 23562a.d0C; 99-03-12 III 10 15 20 25 30 513 158 3 Detaljerad beskrivning av föredragna utföringsformer Figur 1 visar en schematisk vy av ett portabelt mobiltelefonnätverk bestående av en sändare 1, tre mottagare 2a, 2b och 2c, vilka är placerade runt omkring nämnda sändare l, företrädesvis jämnt fördelade runt sändaren.Fig. 2 describes an embodiment of the present invention where the position of the mobile telephone is mainly determined by the direction of the received signal. 23562a.d0C; Detailed Description of Preferred Embodiments Figure 1 shows a schematic view of a portable mobile telephone network consisting of a transmitter 1, three receivers 2a, 2b and 2c, which are located around said transmitter. 1, preferably evenly distributed around the transmitter.

Sändaren l har ett utsändningsområde 3, inom vilket en mobiltelefon 4 kan kontaktas med någon typ av signalering 5, till exempel en begäran om uppdatering av dess position såsom förekommer i dagens mobiltelefonsystem. Respektive mottagare 10b och 10c i form av en vid llb och llc från nämnda har ett mottagningsomráde 10a, lob, inom vilka en utsänd signal lla, mobiltelefon 4 kan emottagas. Dessa mottagningsomràden och nämnda utsändningsomràde bildar tillsammans ett täckningsomràde 12 inom vilket signalering 5 från sändaren 1 kan tas emot av mobiltelefonen samtidigt som en signal lla-llc från nämnda mobiltelefon 4 kan tas emot av samtliga mottagare 2a-2c.The transmitter 1 has a transmission area 3, within which a mobile telephone 4 can be contacted with some type of signaling 5, for example a request to update its position as occurs in the current mobile telephone system. Respective receivers 10b and 10c in the form of one at 11b and 11c from said have a reception area 10a, lobe, within which a transmitted signal 11a, mobile telephone 4 can be received. These reception areas and said transmission area together form a coverage area 12 within which signaling 5 from the transmitter 1 can be received by the mobile telephone at the same time as a signal 11a-11c from said mobile telephone 4 can be received by all receivers 2a-2c.

Genom att koppla sändaren 1 och mottagarna 2a-2c till en styrenhet 6 kan signaleringen från sändaren styras samtidigt som den emottagna signalen hos respektive mottagare kan sammanställas och analyseras.By connecting the transmitter 1 and the receivers 2a-2c to a control unit 6, the signaling from the transmitter can be controlled at the same time as the received signal of the respective receiver can be compiled and analyzed.

I denna utföringsform av uppfinningen har varje mottagare inbyggt medel för att mäta den emottagna signalens signalstyrka, vilken är vidarebefordrad till styrenheten 6 för analys. Genom att jämföra och vikta de emottagna signalstyrkorna, vilka kan anses vara beroende på avståndet mellan mobiltelefonen och respektive mottagare, kan en position bestämmas för mobiltelefonen 4.In this embodiment of the invention, each receiver has a built-in means for measuring the signal strength of the received signal, which is forwarded to the control unit 6 for analysis. By comparing and weighting the received signal strengths, which can be considered to depend on the distance between the mobile telephone and the respective receiver, a position can be determined for the mobile telephone 4.

Figur 2 visar en alternativ utföringsform av föreliggande uppfinning som skiljer sig från den i figur l pà sà sätt att 23562a.d0C; 99-03-12 10 15 20 25 513 158 4 det endast behövs 2 stycken mottagare 2a och 2b. Respektive mottagare har i denna utföringsform en mycket smalare lob, 20 respektive 21, samt en avsökningsfunktion som låter loben svepa över en definierad vinkel 22, 23, vilket medför att respektive mottagare erhåller ett större mottagningsområde 24, 25.Figure 2 shows an alternative embodiment of the present invention which differs from that of Figure 1 in that 23562a.d0C; 99-03-12 10 15 20 25 513 158 4 only 2 receivers 2a and 2b are needed. In this embodiment, the respective receivers have a much narrower lobe, 20 and 21, respectively, and a scanning function which allows the lobe to sweep over a defined angle 22, 23, which means that the respective receivers receive a larger receiving area 24, 25.

Precis som tidigare beskrivits uppstår ett täckningsomràde 26 där dessa mottagningsomráden och utsändningsområdet sammanfaller. Även i denna utföringsform finns en styrenhet 6 i vilken även en analys av emottagna signaler göres. Respektive mottagare mäter upp vid vilken vinkel den starkaste signalen lla respektive llb från mobiltelefonen 4 erhålles och skickar denna information till styrenheten, som med triangulering kan fastställa positionen för mobiltelefonen. Dessutom kan även den uppmätta informationen avseende respektive signalstyrka vidarebefordras till styrenheten 6 för analys för att ytterligare tillföra information vid positionsbestämningen av mobiltelefonen 4.As previously described, a coverage area 26 arises where these reception areas and the broadcast area coincide. Also in this embodiment there is a control unit 6 in which an analysis of received signals is also made. Each receiver measures at what angle the strongest signal 11a and 11b, respectively, is obtained from the mobile telephone 4 and sends this information to the control unit, which can determine the position of the mobile telephone by triangulation. In addition, the measured information regarding the respective signal strength can also be forwarded to the control unit 6 for analysis in order to further supply information in the position determination of the mobile telephone 4.

Mottagarna i denna utföringsform blir lite mer komplicerade eftersom de har en mindre lob som måste svepas över ett område 24 respektive 25 samtidigt som den emottagna signalens signalstyrka måste övervakas för att avgöra riktningen med den starkaste signalstyrkan.The receivers in this embodiment become a little more complicated because they have a smaller lobe that must be swept over an area 24 and 25, respectively, while the signal strength of the received signal must be monitored to determine the direction with the strongest signal strength.

Styrenheten 6, sändaren 1 och en av mottagarna 2a kan med fördel anordnas i en integrerad huvuddel av systemet, vilket medför att systemet endast kommer att bestå av en huvuddel och minst en ytterligare mottagare, vilken kan vara mycket enkel till sin konstruktion. 23562a.dOC; 99-03-12 4.3 513 158 5 Systemet behöver endast kunna sända ut en signal, till vilken mobiltelefonen automatiskt svarar genom att i sin tur skicka ut en annan signal. Detta kräver dock att mobiltelefonen är aktiv. 23562a .doc; 99-03-12The control unit 6, the transmitter 1 and one of the receivers 2a can advantageously be arranged in an integrated main part of the system, which means that the system will only consist of a main part and at least one further receiver, which can be very simple in its construction. 23562a.dOC; 99-03-12 4.3 513 158 5 The system only needs to be able to send out a signal, to which the mobile phone automatically responds by in turn sending out another signal. However, this requires that the mobile phone is active. 23562a .doc; 99-03-12

Claims (8)

10 15 20 25 513 158 6 Patentkrav10 15 20 25 513 158 6 Patent claims 1. En metod för att lokalisera en aktiv mobiltelefon (4) i ett portabelt mobiltelefonnätverk, där nätverket innefattar minst en portabel sändare (1) och minst två portabla mottagare (2a,2b,2c), och där nätverket har ett täckningsområde (12:26), k ä n n e t e c k n a d a v följande steg - utsändning av en begäran (5) från nämnda sändare till nämnda aktiva mobiltelefon (4), - emottagning av nämnda begäran i nämnda mobiltelefon, - utsändning av en signal (l1a,l1b,llc) från mobiltelefonen (4) orsakad av nämnda begäran (5), - emottagning av nämnda signal i respektive mottagare <2a;2b,2c), och - analysering av de emottagna signalerna, varvid en positionsbestämning av nämnda mobiltelefon göres baserad på de emottagna signalerna.A method of locating an active mobile telephone (4) in a portable mobile telephone network, wherein the network comprises at least one portable transmitter (1) and at least two portable receivers (2a, 2b, 2c), and wherein the network has a coverage area (12: 26), characterized by the following steps - transmitting a request (5) from said transmitter to said active mobile telephone (4), - receiving said request in said mobile telephone, - transmitting a signal (l1a, l1b, llc) from the mobile telephone (4) caused by said request (5), - receiving said signal in respective receivers <2a; 2b, 2c), and - analyzing the received signals, wherein a position determination of said mobile telephone is made based on the received signals. 2. Metod enligt krav 1, k ä n n e t e c k n a d a v att respektive mottagare söker av området med minst en riktad lob, samt att analyseringssteget beräknar en riktning för den emottagna signalen hos respektive mottagare (2a,2b).Method according to claim 1, characterized in that each receiver searches the area with at least one directional lobe, and that the analysis step calculates a direction for the received signal at the respective receiver (2a, 2b). 3. Metod enligt krav 1 eller 2, k ä n n e t e c k n a d a v att respektive mottagare mäter den emottagna signalens signalstyrka, samt att analyseringssteget jämför signalstyrkorna och beräknar vilken mottagare som är närmast placerad nämnda mobiltelefon (4).Method according to claim 1 or 2, characterized in that each receiver measures the signal strength of the received signal, and that the analysis step compares the signal strengths and calculates which receiver is closest to said mobile phone (4). 4. Metod enligt något av kraven 1-3, k ä n n e t e c k n a d a v att som utsändning från nämnda sändare väljes en positionsuppdateringssignal. 23562a.doc; 99-03-29 10 15 20 25 513 158 74. A method according to any one of claims 1-3, characterized in that a position update signal is selected as a transmission from said transmitter. 23562a.doc; 99-03-29 10 15 20 25 513 158 7 5. Ett portabelt mobiltelefonsystem, innefattande en sändare (1) och minst två mottagare(2a,2b,2c) i ett nätverk vilket har ett täckningsomràde (12:26) samt minst en aktiv mobiltelefon (4) inom nämnda täckningsområde, k ä n n e t e c k n a t a v att sändaren (1) har medel för att sända ut en begäran (5) till nämnda aktiva mobiltelefon (4), vilken mobiltelefon har medel att ta emot nämnda begäran (5) och avge en signal (l1a,11b,llc) orsakad av nämnda emottagna begäran, och där respektive mottagare (2a,2b,2c) har medel för att ta emot nämnda signal, samt att nätverket ytterligare innefattar en analysutrustning (6), varvid en positionsbestämning av nämnda mobiltelefon (4) göres baserad på de emottagna signalerna.A portable mobile telephone system, comprising a transmitter (1) and at least two receivers (2a, 2b, 2c) in a network which has a coverage area (12:26) and at least one active mobile phone (4) within said coverage area, characterized by that the transmitter (1) has means for transmitting a request (5) to said active mobile telephone (4), which mobile telephone has means for receiving said request (5) and emitting a signal (11a, 11b, 11c) caused by said received requests, and where the respective receivers (2a, 2b, 2c) have means for receiving said signal, and that the network further comprises an analysis equipment (6), wherein a position determination of said mobile telephone (4) is made based on the received signals. 6. Portabelt mobiltelefonnätverk enligt krav 5, k ä n n e t e c k n a t a v att respektive mottagare har ytterligare medel för att söka av nämnda täckningsomràde med minst en riktad lob så att nämnda analysutrustning (6) kan beräkna en riktning för den emottagna signalen hos respektive mottagare (2a,2b,2c).A portable mobile telephone network according to claim 5, characterized in that each receiver has additional means for searching said coverage area with at least one directional lobe so that said analysis equipment (6) can calculate a direction for the received signal of each receiver (2a, 2b , 2c). 7. Portabelt mobiltelefonnätverk enligt krav 5 eller 6, k ä n n e t e c k n a t a v att respektive mottagare har ytterligare medel för att mäta den emottagna signalens signalstyrka så att nämnda analysutrustning kan beräkna vilken mottagare (2a,2b,2c) som befinner sig närmast nämnda mobiltelefon (4).Portable mobile telephone network according to claim 5 or 6, characterized in that each receiver has additional means for measuring the signal strength of the received signal so that said analysis equipment can calculate which receiver (2a, 2b, 2c) is closest to said mobile phone (4). . 8. Metod enligt något av kraven 5-7, k ä n n e t e c k n a d a v att nämnda medel för att sända ut en begäran (5) består av medel för att sända ut en positionsuppdateringssignal. 23562a.d0C; 99-03-29A method according to any one of claims 5-7, characterized in that said means for sending a request (5) consists of means for sending a position update signal. 23562a.d0C; 99-03-29
SE9901183A 1999-03-31 1999-03-31 Method and portable system for location of mobile phone SE9901183L (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE9901183A SE9901183L (en) 1999-03-31 1999-03-31 Method and portable system for location of mobile phone
PCT/SE2000/000589 WO2000059254A1 (en) 1999-03-31 2000-03-24 Method and portable system for locating mobile telephones
AU41594/00A AU4159400A (en) 1999-03-31 2000-03-24 Method and portable system for locating mobile telephones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9901183A SE9901183L (en) 1999-03-31 1999-03-31 Method and portable system for location of mobile phone

Publications (3)

Publication Number Publication Date
SE9901183D0 SE9901183D0 (en) 1999-03-31
SE513158C2 true SE513158C2 (en) 2000-07-17
SE9901183L SE9901183L (en) 2000-07-17

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SE9901183A SE9901183L (en) 1999-03-31 1999-03-31 Method and portable system for location of mobile phone

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AU (1) AU4159400A (en)
SE (1) SE9901183L (en)
WO (1) WO2000059254A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2382265B (en) * 2001-11-14 2004-06-09 Toshiba Res Europ Ltd Emergency rescue aid
DE10345511B4 (en) 2003-09-30 2005-11-17 Siemens Ag Method for determining the spatial position of at least one mobile radio communication device, associated radio communication device and radio communication system
CH706279A1 (en) * 2012-03-30 2013-09-30 Girsberger Elektronik Ag Portable device i.e. avalanche trapped detector, for e.g. positioning transmitter worn by snowboarder, has display unit attached with switch element in control device that is designed as telephone and mechanically independent separate unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1122686A (en) * 1977-05-31 1982-04-27 David W. Wind Locating device
CA2171333A1 (en) * 1994-07-08 1996-01-25 David L. Herrick Apparatus and method for locating cellular telephones and similar transmitters

Also Published As

Publication number Publication date
SE9901183D0 (en) 1999-03-31
AU4159400A (en) 2000-10-16
SE9901183L (en) 2000-07-17
WO2000059254A1 (en) 2000-10-05

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