WO2010072240A1 - Détermination de l'emplacement d'un terminal mobile dans un premier réseau de télécommunication au moyen d'informations issues d'un second réseau voisin de télécommunication - Google Patents

Détermination de l'emplacement d'un terminal mobile dans un premier réseau de télécommunication au moyen d'informations issues d'un second réseau voisin de télécommunication Download PDF

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Publication number
WO2010072240A1
WO2010072240A1 PCT/EP2008/011071 EP2008011071W WO2010072240A1 WO 2010072240 A1 WO2010072240 A1 WO 2010072240A1 EP 2008011071 W EP2008011071 W EP 2008011071W WO 2010072240 A1 WO2010072240 A1 WO 2010072240A1
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Prior art keywords
network node
network
mobile terminal
neighbouring
location information
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PCT/EP2008/011071
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English (en)
Inventor
Jos Den Hartog
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Telefonaktiebolaget Lm Ericsson (Publ)
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Priority to PCT/EP2008/011071 priority Critical patent/WO2010072240A1/fr
Publication of WO2010072240A1 publication Critical patent/WO2010072240A1/fr

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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
    • G01S5/0257—Hybrid positioning
    • G01S5/0263—Hybrid positioning by combining or switching between positions derived from two or more separate positioning systems

Definitions

  • the invention relates to a method, a network node and a mobile terminal for determining a position of the mobile terminal in a telecommunication network.
  • UTRAN Universal Terrestrial Radio Access Networks
  • GSM Global System for Mobile communications
  • UMTS Universal Mobile Telecommunication System
  • position measurements between a mobile terminal and base stations in the network can be performed to determine geographical position coordinates of the mobile phone.
  • Geographical position coordinates may be estimated using field strength measurements or time difference measurements of reference signals which measurements may be performed by the mobile terminal on signals transmitted by the base stations or vice versa, may be determined by a cell or base station the mobile terminal is currently receiving service from or may be determined by means of special location determining hardware and software using satellite position information such as Global Positioning System (GPS).
  • GPS Global Positioning System
  • the geographical position coordinates of the mobile terminal may be used by telecom operators, subscribers and third party service providers to provide location based services. In order to provide these services, the geographical position of the terminal must be known with reasonable accuracy. The accuracy may range depending on the method followed to determine the geographical position coordinates and the network from a few metres up to hundreds of metres. See reference [2].
  • the object is achieved in a method for determining geographical position coordinates of a mobile terminal in a first telecommunication network.
  • the method comprises the steps of a first network node establishing first location information of the mobile terminal relative to at least one base station of the first telecommunication network, the first network node establishing second location information of the mobile terminal relative to at least one second base station of a neighbouring telecommunication network the neighbouring telecommunication network at least partially geographically overlapping with the first telecommunication network.
  • the step of the first network node establishing second location information comprises a step of the first network node obtaining at least part of the second location information from a second network node residing in the neighbouring telecommunication network.
  • the first network node determines the geographical position coordinates of the mobile terminal by combining the first location information and the second location information.
  • a network node or network function in charge of determining geographical position coordinates uses network topology information to determine the geographical position coordinates from measurements of the mobile terminal relative to at least one base station in a network or of the at least one base station relative to the mobile terminal. Together with the geographical position coordinates an accuracy of the geographical position coordinates may also be determined.
  • the first location information may comprise respectively at least one of first position measurements performed by the mobile terminal relative to the at least one first base station, alternatively first position measurements performed by the at least one first base station relative to the mobile terminal, the first topology information relating to the geographical position of the at least one first base station, a calculated first position and first accuracy based on the first position measurements and first topology information.
  • the second location information may comprise respectively at least one of second position measurements performed by the mobile terminal relative to the at least one second base station, alternatively second position measurements performed by the at least one second base station relative to the mobile terminal, the second topology information relating to the geographical position of the at least one second base station and a calculated second position and second accuracy based on the second position measurements and the second topology information.
  • the first and second location information or parts thereof may be combined in different ways as set out in various embodiments of the invention described below.
  • the first network node establishes (301 ) the first location information by obtaining first position measurements from the mobile terminal of the mobile terminal relative to the at least one first base station of the first network and determining a first position of the mobile terminal from the first position measurements using first topology information relating to the first base stations of the first network.
  • the first network node establishes second location information by obtaining second position measurements from the mobile terminal of the mobile terminal relative to the at least one second base station of the neighbouring network.
  • the first network node obtains at least part of the second location information from the second network node by sending a request comprising the second position measurements to the second network node in the neighbouring network for determining a second position of the mobile terminal and the second network node determining the second position of the mobile terminal and the first network node receiving the second position from the second network node.
  • the first network node determines the geographical position coordinates by combining the first position and the second position respectively.
  • This embodiment is advantageous, since the first and second measurements can be performed simultaneously or within a short time span thereby improving accuracy even while the mobile terminal is in motion.
  • the first network node has no need to have the second network topology information, the second network node can autonomously determine the second position. Any modifications in the second network topology will be taken into account automatically. Thus flexibility is achieved.
  • the first network node establishes the first location information by obtaining first position measurements from the mobile terminal of the mobile terminal relative to the at least one first base station of the first network.
  • the first network node further establishes second location information by obtaining second position measurements from the mobile terminal of the mobile terminal relative to the at least one second base station of the neighbouring network.
  • the first network node obtains at least part of the second location information from the second network node by receiving second topology information of the neighbouring network from the second network node.
  • the first network node determines the geographical position coordinates of the mobile terminal by combining the first and the second topology information and by determining the geographical position coordinates from the first and second measurements and the combined first and second topology information.
  • This embodiment has the advantage that by combining the second topology information with the first topology information the first node can calculate the geographical position coordinates directly from the first and second measurements as if the at least one first and second base stations belong to a single network. This way greater efficiency and speed can be achieved.
  • a step of the first network node sending a request to the second network node in the neighbouring network for second topology information of the neighbouring network may be performed.
  • the second topology information may be stored by the first network node for future reference.
  • the second topology information need not be requested every time a measurement is performed.
  • the second topology may be sent to the first network node periodically either by the first network node sending a request to the second network node in the neighbouring network for second topology information of the neighbouring network or by the second network node sending the second topology information on its own motion and storing the second topology information periodically or when a time period for refreshing the second topology information is expired, for example by using a timer.
  • the first network node establishes the first location information by obtaining first position measurements of the at least one base station relative to the mobile terminal from the at least one first base station and determining a first position of the mobile terminal from the first position measurements using first topology information relating to the first base stations of the first network.
  • the first network node establishes the second location information and the first network node obtains at least part of the second location information from the second network node by the first network node sending a request to the second network node in the neighbouring network for establishing second location information, the second network node obtaining second position measurements of the at least one second base station relative to the mobile terminal from the at least one second base station and the second network node determining a second position of the mobile terminal and by the second network node sending the second position to the first network node, the first network node receiving the second position from the second network node.
  • the first network node determines the geographical position coordinates by combining the first position and the second position respectively.
  • the measurements of the base station may be taken by specialised equipment.
  • This embodiment is advantageous, since it allows for determining more accurate geographical position coordinates of a mobile terminal, even if the mobile terminal is not equipped for taking first and/or second measurements. Since the second position is determined within the neighbouring network, any changes in the second topology of the neighbouring network will be taken into account automatically.
  • the object of the invention is also achieved in a first network node for use in a first telecommunication network, specially adapted for use in the method of determining geographical position coordinates of a mobile terminal receiving service from a first telecommunication network as described above.
  • the first network node comprises interface means for communicating with the mobile terminal via the first telecommunication network and for communicating with a neighbouring network and for communicating with a second network node in a neighbouring telecommunication network.
  • the first network node further comprises processing means cooperating with the interface means, the processing means being adapted for causing the first network node to perform the steps of the above described method.
  • the first network node may also be a function which is combined with another network function into a network node using common resources like the processing means and interface.
  • the object of the invention is also achieved in a second network node for use in a telecommunication network, specially adapted for use in the method of determining geographical position coordinates of a mobile terminal receiving service from a first telecommunication network as described above.
  • the second network node comprises interface means for communicating with a first network node in a first telecommunication network and processing means cooperating with the interface means, the processing means adapted for causing the network node to perform a step of sending topology information relating to the telecommunication network to a first network node in a first telecommunication network.
  • the second network node may also be a network function which is combined with another network function into a network node using common resources like the processing means and interface.
  • first and second network node may be combined such that the combined node is suitable to be used as both first and second network node.
  • the second network node has the processing means arranged for causing the second network node to send the topology information to the first network node on request of the first network node.
  • the second network node has the processing means arranged for causing the second network node to send the topology information to the first network node periodically.
  • At least one of the first network node and second network node is a Serving Mobile Location Centre.
  • At least one of the first network node and second network node is a Stand Alone Serving Mobile Location Centre.
  • At least one of the first network node and second network node is an internal function of a Radio Network Controller.
  • the object of the invention is also achieved in a mobile terminal for use in a first telecommunication network, specially adapted for use in the method of determining geographical position coordinates of a mobile terminal receiving service from a first telecommunication network as described above.
  • the mobile terminal comprises wireless communication means for communicating with the first communication network and a neighbouring telecommunication network, the neighbouring telecommunication network at least partially geographically overlapping with the first telecommunication network, processing means cooperating with the wireless communication means, arranged for causing the wireless communication means to perform taking the first position measurements relative to the at least one first base station of the first network, the first location information comprising the first position measurements.
  • the processing means are arranged for causing the wireless communication means to perform taking second position measurements of the mobile terminal relative to the at least one second base station of the neighbouring network and for causing the wireless communication means to send the first and second position measurements to a network node in the first telecommunication network.
  • Figure 1 shows a network configuration for determining a position of a mobile terminal in a telecommunication network according to the state of the art.
  • Figure 2 shows a network configuration for determining a position of a mobile terminal in a telecommunication network according to an embodiment of the invention.
  • Figure 3 shows a block diagram of a method for determining geographical position coordinates of a mobile terminal receiving services from a first telecomm nation network according to the invention.
  • Figure 4 shows a time sequence diagram according to an embodiment of the invention.
  • Figure 5 shows a time sequence diagram according to another embodiment of the invention.
  • Figure 6 shows a time sequence diagram according to yet another embodiment of the invention.
  • Figure 7a shows a block diagram of a first network node for use in the method of determining geographical position coordinate of mobile terminal in a first telecommunication network according to an embodiment of the invention.
  • Figure 7b shows a block diagram of a second network node for use in the method of determining geographical position coordinate of mobile terminal in a neighbouring telecommunication network according to an embodiment of the invention.
  • Figure 8 shows a block diagram of a mobile terminal for use in the method for determining geographical position coordinates of a mobile terminal in a first telecommunication network according to the invention.
  • Figurei shows a configuration for determining geographical position coordinates of a mobile terminal 102 in a telecommunication network according to the state of the art.
  • the telecommunication network 101 is a mobile telecommunication network comprising base stations 104a, 104b, 104c, which are communicatively connected
  • a mobile terminal 102 communicates wirelessly 106a, 106b, 106c with at least one of the base stations 104a, 104b, 104c through the SRNC 103 with another mobile terminal inside or outside of the mobile telecommunication network 101 .
  • SRNC Serving Radio Network Controller
  • SMLC Serving Mobile Location Centre
  • SAS Stand Alone SMLC
  • the mobile terminal 102 in [1] referred to as User Equipment (UE), the SMLC is referred to a Stand Alone SMLC (SAS), and the Radio Network Controller (RNC) is referred to as Serving Radio Network Controller (SRNC).
  • UE User Equipment
  • SAS Stand Alone SMLC
  • RNC Radio Network Controller
  • the method described in chapter 9 [1] is referred to as Observed Time Difference Of Arrival (OTDOA) and is based on time differences of signals 106a, 106b, 106c sent from the base stations 104a, 104b, 104c and measured by the mobile terminal 102.
  • OTDOA Observed Time Difference Of Arrival
  • the measurements are sent to SAS 108 via the SRNC 103 were they are evaluated and used for calculating the geographical position coordinates.
  • geographical position coordinates may be established by using an Uplink-Time Difference Of Arrival (U-TDOA) positioning method may be used. This method is described in [1] chapter 12.
  • U-TDOA Uplink-Time Difference Of Arrival
  • time differences of the arrival of signals 106a, 106b, 106c sent from the mobile terminal 102 are measured by Location Measurement Units (LMUs) which are typically installed in or are part of base stations 104a, 104b, 104c and which communicate the U-TDOA measurements to SAS 108.
  • SAS 108 evaluates mobile terminal 102 geographical position coordinates from these measurements using topology information of the telecommunication network.
  • FIG. 2 shows a network configuration for determining a position of a mobile terminal 202 in a mobile telecommunication network 201 according to an embodiment of the invention.
  • the network configuration comprises a first network 201 having a mobile terminal 202 for which a position has to be determined, a Serving Radio Network Controller (SRNC1) 203 and a Stand Alone SMLC (SAS1) 208.
  • SRNC1 203 is communicatively connected 207 to SAS1 208.
  • the mobile terminal 202 receives service from the first network 201 through the SRNC1 203.
  • SRNC1 203 is communicatively connected 205a, 205b, 205c with a plurality of base stations 204a, 204b, 204c, which wirelessly communicate 206a, 206b, 206c with mobile terminal 202.
  • the first network 201 geographically overlaps 211 with at least one neighbouring network 210, the mobile terminal 202 for which the geographical position is to be determined is located within the area 211 where the first network 201 and at least one neighbouring network 210 overlap.
  • Overlap in this context means that the mobile terminal 202 can simultaneously receive radio signals from the at least one base station 204a, 204b, 204c of the first network 201 and radio signals 215a, 215b from at least one base station 213a, 213b of the neighbouring network 210 and the at least one base station 204a, 204b, 204c of the first network 201 and the at least one base station 213a, 213b of the neighbouring network 210 may simultaneously receive radio signals 206a, 206b, 206c and radio signals 215a, 215b from the mobile terminal 202 respectively.
  • the base stations 213a, 213b, 213c are communicatively connected 214a, 214b, 214c with an SRNC2 212 of the neighbouring network 210, which may be communicatively connected 216 to another SAS2 217.
  • SRNC1 203 may be communicatively connected 209a, 209b with a requesting node, not shown, in the first network, to receive a position request to provide geographical position information with respect to the mobile terminal 202.
  • SRNC2 212 may be communicatively connected 218a, 218b, to a second requesting node, not shown, within the neighbouring network 210, to receive a Location Request to provide position information.
  • SAS1 208 and SAS2 217 may be communicatively connected 219a, 219b for SAS2 217 to receive location information requests from SAS1 208 and for SAS2 217 to provide location information to SAS1 208 upon said request.
  • Figure 3 shows a block diagram of a method for determining geographical position coordinates of a mobile terminal in a first telecommunication network according to the invention.
  • First location information of the mobile terminal 202 relative to the base stations 204a, 204b, 204c of the first telecommunication network 201 is established by a first network node 208, such as a SAS 1 208.
  • This first location information may be obtained in different ways and may comprise first measurements performed by the mobile terminal 202.
  • the first location information may also comprise a first position of the mobile terminal 202 determined by the first network node 208 using the first measurements and first topology information of the first network 201.
  • second location information of the mobile terminal 202 relative to base station 213a, 213b of a neighbouring network 210 may be established by the first network node 208.
  • the second location information may comprise second measurements of the mobile terminal 202 relative to the second base stations 213a, 213b of the at least one neighbouring network 210, as a second position and second topology information of the neighbouring network 210.
  • a second position and topology information of the neighbouring network 210 may be received from a second network node 212 such as Stand Alone SMLC (SAS2) of the at least one neighbouring network 210.
  • SAS2 Stand Alone SMLC
  • steps 301 of establishing first location information, 302 of a establishing second location information and 304 of receiving part of the second location information do not necessarily have to be performed in the order in time as depicted in figure 3. These steps may for example also be performed simultaneously or in any order as will be understood by the skilled person.
  • the first and second location information may be combined in step 303 to obtain geographical position coordinates of the mobile terminal 202. Since additional location information is used relative to the first location information, the skilled person will understand that the thus obtained geographical position will be more accurate.
  • more than one neighbouring network 210 may be present relative to which further second location information of the mobile terminal 202 may be established, at least part of which may be received by the first network node 208 from a further second network node 217 in the more than one neighbouring network 210.
  • the further second location information may be combined with the first location information and second location information to obtain more accurate geographical position coordinates.
  • a first position may be determined from the first location information.
  • a second position may be determined from the second location information.
  • a function for calculating first or second positions or geographical position coordinates may be found in [3].
  • First and second positions may be combined by averaging respective position coordinates.
  • An example of combining the first and second position is given in Equation 1 :
  • a time weight function may be used to combine the first and second position A, B respectively, such that the first position B which is presumed to be later has more weight.
  • Equation 2 An example of such a function is given in Equation 2:
  • FIG. 4 shows a time sequence diagram according to an exemplary embodiment of the invention.
  • an intermediate node 203 may be involved, which may be a Serving Radio Network Controller, further referred to as SRNC1 203.
  • SRNC1 203 receives a Location Request 401 relating to the geographical position of mobile terminal 202 from a requesting node in the first network 201.
  • SRNC1 203 issues a Positioning Calculation Application Part (PCAP) Position Initiation Request 402 to SAS1 208.
  • SAS1 208 takes responsibility for executing all steps 403, 409, 412, 413 necessary to obtain the requested Location Estimate comprising geographical position coordinates as reply 414, 415 to the Location Request 401.
  • PCAP Positioning Calculation Application Part
  • SAS1 208 sends a PCAP Position Activation Request 403 to SRNC1 203, thereby initiating a sequence of acquiring first location information.
  • SRNC1 203 issues an OTDOA Measurement Request 404 to the mobile terminal 202.
  • the mobile terminal 202 measures 405 signals 206a, 206b, 206c in the first network 201 and measure 406 signals 214a, 214b in the neighbouring in the at least one neighbouring network 210 as described in [1], chapter 9.6.2, bullet 4.
  • Mobile terminal 202 performs OTDOA first measurements 405 for all available base stations of the current first network and OTDOA second measurements 406 for every available neighbouring network 210.
  • Mobile terminal 202 includes all first and second measurements 405, 406 in a Measurement Report and passes this report 407 to SRNC1 203 and subsequently SRNC1 203 passes the Measurement Report to SAS1 208 using a PCAP Position Activation Response 408.
  • SAS1 208 determines from the measurement that first measurements 405 are received from the first network and second measurements 406 from the neighbouring network 210.
  • SAS1 208 divides the measurement into the first measurements 405 and the second measurements 406 belonging to the first network and the neighbouring network 210 respectively.
  • SAS1 208 calculates 412 a first position from the first measurements using first topology information of the first network 201.
  • Using a PCAP Position Calculation Request SAS1 208 can now send a request 409 comprising the second measurements 406 to SAS2 217 in the neighbou ring network 210 as determined from the second measurements 406.
  • SAS2 217 can now calculate 410 a second position based on the received second measurements using second topology information of the neighbouring network 210. SAS2 217 returns 411 the second position to SAS1 208.
  • SAS1 208 sending a request 409 comprising second measurements SAS2 217 can be repeated for every neighbouring network 210 for which further second measurements 406 are available in the measurement report sent 407, 408 by the mobile terminal 202 to SAS1 208.
  • SAS 1 208 now holds a first position of the mobile terminal 202 in the first network and second position of the mobile terminal 202 relative to the neighbouring network 210.
  • SAS1 208 can now determine aggregated geographical position coordinates from this first position and the second position respectively, or from each second position for more than one neighbouring networks 210.
  • SAS1 208 returns 414 the combined geographical position coordinates to SRNC1 203 which in turn returns the combined geographical position coordinates as a Location Estimate 415 to the requesting node in the first network 201.
  • Figure 5 shows an alternative exemplary embodiment according to the invention.
  • SRNC1 203 receives a Location Request 501 from a requesting node within the first network 201.
  • SRNC1 203 forwards 502 this request to SAS1 208 as a PCAP Position Initiation Request.
  • SAS1 208 initiates taking of measurements by mobile terminal 202 by subsequently issuing a PCAP Position Activation Request 503 to SRNC1 203.
  • SRNC1 203 subsequently issues an OTDOA Measurement Request 504 to the mobile terminal 202.
  • the mobile terminal 202 subsequently performs first OTDOA measurements 505 relating to radio signals 206a, 206b, 206c from base stations 204a, 204B, 204C of the first network 201 and second OTDOA measurements 506 of radio signals 215a, 215b of base stations 213a, 213b of the neighbouring network 210.
  • the first and second measurements 505, 505 are included in a measurement report, which is returned 507 to SRNC1 203 and returned 508 to SAS1 208.
  • SAS1 208 detects the second measurements 506 from the neighbouring network 210 and requests 509 topology information of the neighbouring network 210 from SAS2 217.
  • SAS2 217 retrieves the second topology information 510 of the neighbouring network 210 and returns the second topology information 511 to SAS1 208.
  • SAS1 208 combines 512 already present first topology information relating to the first network 201 and the received second topology information of the neighbouring network 210.
  • SAS1 208 can now determine the geographical position coordinates of the mobile terminal 202 with respect to both the first network 201 and the neighbouring network 210 by calculating 513 the position based on the combined topology information and the combined first and second measurement. It will be clear for the skilled person that using more measurements and more topology information results in a more accurate geographical position coordinates.
  • the calculated geographical coordinates can now be forwarded 514, 515 to the requesting node in the first network 201 via SRNC1 203.
  • the second topology information of the neighbouring network 210 may be static or semi-static.
  • the request 509 for and/or the receiving 511 of second topology information from SAS1 208 to SAS2 217 may be performed independently from performing the second measurements 505, 506. It can be advantageous to subscribe SAS1 208 to a second topology information from SAS2 217, such that SAS1 208 receives 511 second topology information from SAS2 217 on a regular bases or when the second topology information from is updated in the neighbouring network 210. Alternatively SAS1 208 may request 509 the second topology information periodically or after a time out of a maintenance period or a notification from SAS2 217 that the second topology information has been updated .
  • requesting 509 and receiving 511 second topology information and subsequently determining an aggregated more accurate geographical position coordinate may also be performed for more than one neighbouring network 210 and that above further second topology information relating to more than one neighbouring network 210 may be received.
  • the second topology information may be requested 509 for each detected neighbouring network 210.
  • the second topology of the neighbouring network 210 may be received 511 independent from the request. This information is not likely to change very frequent, so it may be arranged that SAS1 203 may send a request 509 to SAS2 217 on a regular basis, periodically or when SAS2 217 has sent notification of change of the second topology information. Alternatively SAS2 217 sends on its own motion second topology information 511 to SAS1 203 according to an update schedule on a regular basis, periodically, or when a change in the second topology information has been detected.
  • FIG. 4 shows a position calculation request 409 can be sent to corresponding SAS2 217, which then calculates a second position from the second measurements sent by the SAS1 208 in the request 409.
  • the subsequently returned second position can be combined 412 , 512 by SAS1 208 before calculating 413, 513 the aggregated geographical position coordinates.
  • Figure 6 shows a time-sequence diagram of an alternative embodiment according to the invention. The method followed is U-TDOA method based on chapter 12 of (1) figure 12.7, 12.8 and 12.9.
  • SRNC1 203 After receiving a Location Request 601 from an arbitrary node within the first network 201 , SRNC1 203 sends a PCAP Position Calculation Request to SAS1 208.
  • SAS1 208 initiates and controls the U-TDOA positioning method 604 for the first network 201 to establish first measurements and a first position.
  • SAS1 208 sends a PCAP Position Calculation Request 603 to SAS2 217 of a neighbouring network 210.
  • SRNC 1 203 may send a command 610 to the mobile terminal 202 to enter the "SELL_FACH"-state causing the mobile terminal 202 to transmit a certain number of pre-coded bits within a certain period of time.
  • SAS2 217 may also perform a procedure 605 of determining a second position of the mobile terminal 202 with respect to base stations 213a, 213b of the neighbouring network 210 by initiating 603 and controlling a U-TDOA positioning procedure 605 in the neighbouring network 210.
  • Procedure 605 comprising performing second measurements and determining a second position.
  • SAS2 217 returns 606 the calculated second position to SAS1 208.
  • SAS1 208 now has a first position of the mobile terminal 202 within the first network and a second position of the mobile terminal 202 within the neighbouring network 210.
  • SAS1 208 can now combine 607 the first position and the second position into a more accurate final geographical position coordinates which can be returned 608 to SRNC1 203, which in turn can return 608, 609 a Location Estimate to the requesting node in the first network 201 .
  • FIG. 7a shows a network node 208 for use in a first network 210 according to the invention.
  • the first network node 208 comprises processing means 702a objectively connected 703a with interface 701a for communicating with a Radio Network Controller, SRNC1 203, for communicating 209a, 209b with a requesting network node within the first network 201 and for communicating 219a, 219b with a second network node 217 in a neighbouring network 210.
  • the processing means 702a may comprise at least one processor, computer memory and/or dedicated hardware for causing the first network node 208 to operate together with interface 701 a according to the above described methods relating to figures 3 - 6.
  • Figure 7b shows a block diagram of a second network node 217 in a neighbouring network 210.
  • the second network node 217 similarly comprises processing means 702b operatively connected 703b with an interface 701 b for communicating 216 with a Radio Network Controller (SRNC2) 212 and for communicating 219a, 219b with the first network node 203 of the first network 201.
  • Interface 701 b may as will be arranged for communicating 218a, 218b with other requesting network nodes in the neighbouring network 210 (not shown).
  • first or second network node 208, 217 may be a Stand Alone
  • SMLC or an SMLC function combined with another network function such as a
  • the first or second network node 208, 217 may also be a Serving Radio Network Controller, enhanced to perform the methods relating to figures 3 - 6.
  • FIG. 8 shows a block diagram of a mobile terminal 202 according to the invention
  • mobile terminal 202 comprises processing means 801 , operatively connected 803 with wireless communication 802, arranged for wireless communication 206a, 206b, 206c with base stations 204a, 204b, 204c of a first wireless communication network 201 from which the mobile terminal 202 receives service.
  • the wireless interface 802 is also arranged for receiving radio signals 215a, 215b from base stations 213a, 213 b of a neighbouring wireless telecommunication network 210 from which the mobile terminal 202 does not receive service from.
  • the processing means 801 are arranged for and corporate with the wireless interface 802 such that the mobile terminal 202 can perform first OTDA-measurements in the first network and second OTDA- measurements in the neighbouring network 210, whereby the first measurements and the second measurements can be included into a measurement report which can be transmitted to an SAS 208 in the first network 201.
  • Mobile terminal 202 may receive radio signals 206
  • ETSI 3GPP TS 22.071 "Location Services (LCS); Service description, Stage 1".

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  • Mobile Radio Communication Systems (AREA)

Abstract

Cette invention concerne un procédé de détermination des coordonnées de position géographique d'un terminal mobile (202) dans un premier réseau de télécommunication (201). Un premier nœud de réseau (203, 208) établit (301) les données d'un premier emplacement du terminal mobile (202) par rapport à au moins une station de base (204a, 204b, 204c) du premier réseau de télécommunication (201). Le premier nœud de réseau (203, 208) établit (302) les données d'un second emplacement du terminal mobile (202) par rapport à au moins une seconde station de base (213a, 213b) d'un réseau de télécommunication voisin (210), le réseau de télécommunication voisin (210) chevauchant géographiquement au moins partiellement (211) le premier réseau de télécommunication (201). Le premier nœud de réseau (203, 208) obtient (304) au moins une partie des données du second emplacement à partir d'un second nœud de réseau (212, 217) résidant dans le réseau de télécommunication voisin (210). Le premier nœud de réseau (203, 208) détermine (303) les coordonnées de position géographique du terminal mobile (202) en combinant (303) les données du premier emplacement et les données du second emplacement. Les données du premier et du second emplacement peuvent comprendre des valeurs de position obtenues auprès du terminal mobile et/ou des données topologiques du réseau et/ou des données de position déterminée.
PCT/EP2008/011071 2008-12-23 2008-12-23 Détermination de l'emplacement d'un terminal mobile dans un premier réseau de télécommunication au moyen d'informations issues d'un second réseau voisin de télécommunication WO2010072240A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/011071 WO2010072240A1 (fr) 2008-12-23 2008-12-23 Détermination de l'emplacement d'un terminal mobile dans un premier réseau de télécommunication au moyen d'informations issues d'un second réseau voisin de télécommunication

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2008/011071 WO2010072240A1 (fr) 2008-12-23 2008-12-23 Détermination de l'emplacement d'un terminal mobile dans un premier réseau de télécommunication au moyen d'informations issues d'un second réseau voisin de télécommunication

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WO2010072240A1 true WO2010072240A1 (fr) 2010-07-01

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Cited By (5)

* Cited by examiner, † Cited by third party
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EP2775744A1 (fr) * 2013-03-06 2014-09-10 HERE Global B.V. Utilisation des informations sur les cellules voisines d'autres types de réseau et / ou d'autres opérateurs pour le positionnement d'un terminal mobile
EP3009857A1 (fr) * 2014-10-14 2016-04-20 Vodafone IP Licensing limited Procédé pour améliorer la détermination d'emplacement
CN108513247A (zh) * 2017-02-23 2018-09-07 华为技术有限公司 基于无线局域网的网络站点协作定位方法及装置
WO2018186973A1 (fr) * 2017-04-05 2018-10-11 Qualcomm Incorporated Mesure de signaux de positionnement sur la base de données d'assistance
WO2022101238A3 (fr) * 2020-11-16 2022-07-07 Nokia Technologies Oy Positionnement de dispositif pour un équipement utilisateur multi-sim

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WO2002082850A1 (fr) * 2001-03-30 2002-10-17 Koninklijke Philips Electronics N.V. Procede permettant de determiner une position dans un reseau de communications cellulaire
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WO2002082850A1 (fr) * 2001-03-30 2002-10-17 Koninklijke Philips Electronics N.V. Procede permettant de determiner une position dans un reseau de communications cellulaire
EP1289331A2 (fr) * 2001-08-24 2003-03-05 Nokia Corporation Procédé de localisation d'une station mobile à différence de références temporelles observées
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2775744A1 (fr) * 2013-03-06 2014-09-10 HERE Global B.V. Utilisation des informations sur les cellules voisines d'autres types de réseau et / ou d'autres opérateurs pour le positionnement d'un terminal mobile
GB2511587A (en) * 2013-03-06 2014-09-10 Here Global Bv Using information on neighbor cells of other network types and/or other operators for mobile terminal positioning
US9967853B2 (en) 2013-03-06 2018-05-08 Here Global B.V. Using information on neighbor cells of other network types and/or other operators for mobile terminal positioning
GB2511587B (en) * 2013-03-06 2019-12-18 Here Global Bv Using information on neighbor cells of other network types and/or other operators for mobile terminal positioning
EP3009857A1 (fr) * 2014-10-14 2016-04-20 Vodafone IP Licensing limited Procédé pour améliorer la détermination d'emplacement
CN108513247A (zh) * 2017-02-23 2018-09-07 华为技术有限公司 基于无线局域网的网络站点协作定位方法及装置
WO2018186973A1 (fr) * 2017-04-05 2018-10-11 Qualcomm Incorporated Mesure de signaux de positionnement sur la base de données d'assistance
WO2022101238A3 (fr) * 2020-11-16 2022-07-07 Nokia Technologies Oy Positionnement de dispositif pour un équipement utilisateur multi-sim
US11671938B2 (en) 2020-11-16 2023-06-06 Nokia Technologies Oy Device positioning for multi-SIM user equipment

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