KR100952338B1 - Method for Constructing UMTS Pilot Cell Database, Method for Updating UMTS Pilot Cell Database, Method, Server and System for Measuring Position Based Network by Using UMTS Pilot Cell Database - Google Patents

Abstract

The present invention is U-pCELL (U-PCELL: Universal Mobile Telecommunication System (UMTS) Pilot Cell, hereinafter referred to as the 'U-fi cell') database construction method, U-fi cell database update method, network-based location measurement using the U-fi cell It relates to a method, a server and a system.

The present invention provides a system for measuring a location on a network basis, the system comprising: a mobile terminal for collecting and transmitting terminal measurement data for position measurement; A UE network providing a mobile communication service including a data communication service to a mobile terminal; A location calculation server which receives the terminal measurement data and generates and transmits log data which is a location measurement result; And constructing and storing a uficell database, receiving log data to extract terminal measurement data, and selecting an optimal uficell that matches the terminal measurement data and a pattern from the upicell database to obtain the optimal uficell location information of the mobile terminal. Provides a network-based location measurement system using a UMP cell database characterized in that it comprises a u-ficel location measurement server to generate as location information.

According to the present invention, unlike the method of measuring the position using the OTDOA method, it is possible to perform the position measurement with improved positioning accuracy and stability without installing the LMU in the base station of the UTM.

Ums, location, measurement, pixell, database, network

Description

Method for Constructing UMTS Pilot Cell Database, Method for Updating UMTS Pilot Cell Database, Method, Server and System for Measuring Position Based Network by Using UMTS Pilot Cell Database}

The present invention is U-pCELL (U-PCELL: Universal Mobile Telecommunication System (UMTS) Pilot Cell, hereinafter referred to as the 'U-fi cell') database construction method, U-fi cell database update method, network-based location measurement using the U-fi cell It relates to a method, a server and a system. More specifically, the UMP network establishes the UE measurement data with the most accurate position measurement in the UMP network, updates the fluctuations, and searches for the UPI cell database when the mobile terminal is requested to measure the mobile terminal. The present invention relates to a method, a server, and a system for determining an optimum u-cell to be matched with one terminal measurement information and determining the optimum u-cell's position information as a position of a mobile terminal.

Location measurement service for providing location based service (LBS) is a network that uses a radio environment, which is a cell radius of a base station of a mobile communication network, to determine the location of a mobile terminal. Hybrid based handset based method using network based method and satellite positioning system (GPS: Global Positioning System (GPS)) receiver installed in mobile terminal, and hybrid of both methods Are classified in the following manner.

In the Wideband Code Division Multiple Access (WCDMA) system, which is one of UMTS, an international mobile standardization organization (OMA) is opened between a mobile terminal with GPS and a location calculation server (SPC: Secure User Plane Location (SUPL) Positioning Center) within the WCDMA network. Location of the mobile terminal by sending and receiving messages through the SUPL interface prescribed by the Mobile Alliance, hereinafter referred to as 'OMA', and the A-GPS OMA SUPL protocol, which is a protocol for positioning A-GPS (Assisted GPS) in the OMA SUPL standard. Determine. In this case, four or more satellite signals received by the mobile terminal received from the GPS satellites are very accurate.

As described above, the system for calculating a position using the A-GPS method includes a position calculation server (SPC: SUPL Positioning Center) for receiving a satellite signal from the mobile terminal through a mobile terminal having a GPS, a WCDMA network, and a WCDMA network. Hereinafter referred to as 'SPC' and the location information center (SLC: SUPL Location Center, hereinafter referred to as 'SLC') which processes location calculated by collecting base station information in WCDMA network and provides location information in connection with other systems. It is composed.

Enhanced Observed Time Difference (E-OTD) is a typical network-based location measurement method that uses Time Division Multiple Access (TDMA) radio access standards. It is a location measurement standardized in Release 98 and 99 by the European System for Mobile Telecommunication (GSM) Standards Committee.

The E-OTD method includes Observed Time Difference (OTD), Relative Time Difference (RTD), and Geometric Time Difference (GTD). And a time difference concept such as GTD ', which is used for position calculation in a network manner. The mobile terminal determines a location by calculating a difference between a relative arrival time and a distance of signals received from three or more base stations.

Here, the OTD means a time difference between two base stations to reach the mobile terminal, and the user equipment Rx-Tx Time Difference Parameter (UE) in the mobile terminal. RD-Tx Time Difference Parameter 'can be obtained by measuring the RTD. The RTD is a parameter that can determine the difference between the start time of the signals transmitted from two base stations. Measurement is possible only when a unit (hereinafter referred to as 'LMU') is installed. Therefore, in order to perform network location calculation in the E-OTD method according to the GSM standard, it is necessary to obtain not only the OTD but also the RTD, and the main parameter "GTD = OTD-RTD".

In addition, the position measurement method of the WCDMA network corresponding to the E-OTD of the GSM standard is an Observed Time Difference of Arrival (OTDOA) method, and the OTDOA method is the same principle as the E-OTD method. It calculates the location by measuring this value as if using the UE Rx-Tx Time Difference Parameter in GSM.

According to the network-based location measurement technology, an international standard (IS) -801, a protocol promised between a mobile terminal and an SPC, a radio location service protocol (RRLP: hereinafter referred to as 'RRLP'), and radio resource control ( The terminal transmits measurement data such as pilot phase measurement (PPM: Pilot Phase Measurement, `` PPM ''), OTD, RTD, etc. measured by the mobile terminal and the LMU by RRC (Radio Resource Control), etc. The position of the mobile terminal is measured using the measurement data (PPM, OTD, RTD, etc.).

The SPC performs a location measurement (a method of positioning a location of a mobile terminal that has requested a location in the SPC except for a location measurement method using a GPS satellite) by using a network method, and the result is the target requesting the location measurement (SLC, content provider (CP: Contents Provider) or mobile terminal).

Such a network-based location measurement technique uses a cell ID method using a cell of a base station radius, and an arrival angle (AOA) for calculating a location by calculating a line of bearing (LOB) while receiving a signal transmitted from a mobile terminal. Angle Of Arrival) method, Time Of Arrival (TOA) method for calculating a location in a mobile terminal using the arrival time of radio waves transmitted from three or more base stations, and a pilot received from three base stations in a mobile terminal ( Pilot (TDOA) Time Difference Of Arrival (TDOA) method, which determines the position of the mobile terminal at the intersection of two hyperbolas obtained by measuring the difference in the time of arrival of a pilot signal and calculating the distance difference between base stations. E-OTD scheme, corresponding to OTDOA scheme in WCDMA system).

The location measurement method using such a conventional network has the following problems.

First, when calculating a position by triangulation method or calculating a hyperbolic intersection point using measurement data for time and distance, which are parameters measured in a mobile terminal or a mobile communication network, the repeater is greatly influenced. That is, when the repeater is used, the position is not measured accurately because a delay occurs when the data about the time and distance between the base station and the mobile terminal measured by the mobile terminal are compared with the original data.

Second, in the case of an asynchronous mobile communication network (GSM network or WCDMA network), the triangulation method using measurement parameters for time and distance (E-OTD, OTDOA, etc.) is a separate GPS device to the base station in addition to the OTD, which is a parameter measured by the mobile terminal. In order to obtain the location determination value only by installing additional LMUs attached to the system and measuring up to the round trip time (RTT) measured by the LMU, the LMU is applied to all base stations of the mobile communication network in order to measure the position by the network method. In order to install additionally, the effect of investment is not great, so there is a problem in that the triangulation method of network positioning cannot be used in the region where the LMU is not installed.

Third, when relocating the base station, since the latitude data and the longitude data of the relocated base station are not immediately reflected, there is a problem that serious errors occur in the latitude data and the longitude data referred to at the source.

Fourth, because the characteristics of the base station and the sector of the base station are different for each network-based location measurement technology, excessive human and physical resources are introduced in the process of optimizing parameters used differently for each base station or the sector of the base station in order to increase the accuracy of the location measurement. There is a problem in that it is difficult to promote the commercialization.

Therefore, in conventional network-based positioning techniques, errors may occur up to several hundred meters to several kilometers depending on the presence of a repeater in terms of positioning accuracy, whether the LMU is installed in the base station, and the degree of optimization of parameters. There is a problem.

In order to solve the above-mentioned problems, the present invention is to establish a UE measurement data with the highest accuracy of position measurement in the UTM network to update the fluctuations, and to update the change situation, when requested to measure the position of the mobile terminal UPI cell database The present invention relates to a method, a server, and a system for determining an optimal u-ficell to be matched with terminal measurement information measured by a mobile terminal by determining a position of the mobile terminal.

In order to achieve the above object, the present invention provides a system for measuring a location based on a network, comprising: a mobile terminal for collecting and transmitting terminal measurement data for position measurement; A UE network providing a mobile communication service including a data communication service to a mobile terminal; A location calculation server which receives the terminal measurement data and generates and transmits log data which is a location measurement result; And constructing and storing a uficell database, receiving log data to extract terminal measurement data, and selecting an optimal uficell that matches the terminal measurement data and a pattern from the upicell database to obtain the optimal uficell location information of the mobile terminal. Provides a network-based location measurement system using a UMP cell database characterized in that it comprises a u-ficel location measurement server to generate as location information.

In addition, according to another object of the present invention, in the server connected to the mobile terminal and the location calculation server using the UMS network to determine the location of the mobile terminal on a network, communication with the UMS network and the location calculation server A network communication unit performing a; A u-ficell database unit for storing a u-ficell database; A u-ficell database construction unit configured to generate a u-ficell database by dividing a service area into a plurality of u-ficells in a grid unit and constructing propagation characteristics and latitude-longitude data of an area in which a plurality of u-ficells are located as a database; Extract the terminal measurement data measured by the mobile terminal using the log data received from the location calculation server, and select the optimal euficell that matches the pattern with the terminal measurement data from the upicell database to obtain the location information of the optimal uficell A eupicel positioning portion to generate as position information of the; And control the UPICEL database construction unit to construct the UPICEL database and store it in the UFICEL database unit, and when the position measurement of the mobile terminal is requested, receives log data from the location calculation server and causes the UPICEL positioning unit to perform the location information of the mobile terminal. It provides a network-based location measurement server using the UTM UEPIcell database, characterized in that it comprises a control unit for controlling to generate a.

According to yet another object of the present invention, a method for constructing a uPiCell database by a UPICel positioning server connected to a mobile terminal and a location calculation server using a UTM network, includes: (a) Dividing into a plurality of upi cells in a grid unit; (b) collecting a plurality of position measurement results for the plurality of eupicels; And (c) constructing a UPICell database by extracting necessary parameters from the position measurement result and matching and storing the plurality of UPICels.

In addition, according to another object of the present invention, in a method for measuring the position of a mobile terminal based on a network, the U-ficell location measurement server connected to the mobile terminal and the location calculation server using the UTM network, ( a) receiving log data from the location calculation server and extracting terminal measurement data from the log data; (b) selecting an optimum u-cell that matches the pattern of the terminal measurement data in the u-cell database; And (c) generating location information of an optimal u-cell as location information of a mobile terminal.

In addition, according to another object of the present invention, a method for updating a UPICEL database by a UPICEL location measuring server connected to a mobile terminal and a location calculation server using a UTM network, (a) a location calculation server Parsing the plurality of log data stored in the search server to search for a specific u-ficell corresponding to the log data in the u-ficell database; (b) confirming whether the service base station identification information stored in the specific u-cell and the service base station identification information extracted from the log data are the same; (c) If the service base station identification information stored in a particular u-cell and the service base station identification information extracted from the log data are the same, all primary scrambling codes (PSC) extracted from the log data are compared with all the PSCs stored in the database of the specific u-cell. Searching for a specific PSC to perform; (d) If there is a specific PSC, the average value of the SFN-SFN Observed Time Difference (OTD) and the signal strength value and the SFN-SFN OTD and the signal strength value stored in the UPI cell database of the specific PSC are stored in the UPI cell database. Updating; And (e) if there is no specific PSC, adding a new PSC to the UE cell database and storing the position measurement result and signal strength value for the new PSC in the UE cell database. Provides a way to update the database.

As described above, according to the present invention, in positioning a mobile terminal using a network-based location measurement method in UMTS, a problem in which positioning stability and measurement accuracy is degraded due to a repeater It can contribute to the activation of location-based services.

In addition, according to the present invention, unlike the method of measuring the position using the OTDOA method, it is possible to perform a position measurement with improved positioning accuracy and stability without installing the LMU in the base station of the UMTS.

In addition, according to the present invention, it is possible to provide location-based services using location measurement to both the subscribers in the building (Indoor) and the subscribers (Outdoor), thereby improving the utilization rate of the location-based service and the quality of the service, Minimize human and physical resources during initial commercialization and optimization of location-based services, thereby replacing A-GPS positioning with relatively low cost.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

FIG. 1 is a block diagram schematically illustrating a network-based location measurement system using a U-pCell (Universal Mobile Telecommunications System (UMTS) pCell (Pilot Cell)) database according to an embodiment of the present invention.

A network-based location measurement system using a UMPS UPICEL database according to an embodiment of the present invention is a mobile terminal (SET: Secure User Plane Location (SUPL) Enabled Terminal, 110), a UTS network (UMTS Network, 120). ), A location calculation server (SPC: SUPL Positioning Center 130), a location information center (SLC: SUPL Location Center, 140), a uPIcell location measurement server 150, and a central management system (CMS) Include.

The mobile terminal 110 is a terminal that receives a mobile communication service using the UTM network 120. The mobile terminal 110 incorporates a global positioning system (GPS) to calculate a location server 130 and an international mobile standardization organization. (OMA: Open Mobile Alliance, hereinafter referred to as 'OMA') SUPL interface defined by the OMA and OMA SUPL standard to send and receive messages through the A-GPS OMA SUPL protocol, which is a protocol for positioning of A-GPS (Assisted GPS) method It is a terminal to measure.

The mobile terminal 110 according to an embodiment of the present invention collects terminal measurement data for location measurement and transmits the location measurement server 130 to the location calculation server 130.

In the present invention, the terminal measurement data includes latitude data including latitude data and longitude data, which are service base station information serving base station information, neighbor base station information serving information on neighboring base station information, and location measurement result information using GPS of a location measurement call. do.

Here, the service base station information includes a mobile country code (MCC), which is a country code of a UTM service area, a mobile network code (MNC), which is a network code for identifying operators of a UTM service area, UTRAN Cell Identity (U-CID), which uniquely identifies the service base station, primary scrambling code (PSC) that is a code value unique to each cell, and a received signal indicating the strength of a signal received from the service base station Received Signal Strength Indication (RSSI), Common Pilot Channel (CPICH) Received Signal Code Power (CPICH) indicating the code power for the received signal of the common pilot channel, CPICH Ec / No, the signal strength of the common pilot channel When the SFN-SFN Observed Time Difference (OTD) and uplink DPCCH / DPDCH frame of a user equipment (UE), which is a time difference between base station cells, are transmitted And to a mobile terminal (UE) a radio wave link measurement includes receiving the Rx-Tx Time Difference difference in time of the first path (Path) of the downlink DPCH frame (Downlink DPCH Frame) from (Measured Radio Link) received on.

In addition, the neighbor base station information includes PSC of neighboring base station, CPICH Ec / No of neighboring cell, CPICH RSCP of neighboring cell, SFN-SFN OTD of neighboring cell, SFN-SFN OTD of neighboring cell, and Rx-Tx Time Difference of neighboring cell. Include.

The UTM network 120 is a network that is built on UTM, a third generation mobile communication system and provides a mobile communication service, and is a time duplex-code division multiple access (TD-CDMA) system or a wideband CDMA (WCDMA) system. The concept includes a mobile communication network constructed as a system.

The location calculation server 130 is implemented as a conventional network server, and is a network element for providing A-GPS (Assisted GPS) service in a user plane method defined in the SUPL standard, which is an OMA standard. Server that calculates the location of the mobile terminal 110 with an A-GPS Fallback solution that provides better location accuracy than Cell ID in closed areas such as buildings and underground areas Say.

Location calculation server 130 according to an embodiment of the present invention is a server that can simultaneously provide a location measurement service using a network-based uPiCell database, in order to build a UPiCell database, a UPiCell location measurement server ( Whenever the terminal measurement data received from the mobile terminal 110 is measured in conjunction with 150, the location of the mobile terminal 110 is measured using A-GPS, separate log data is generated and periodically or whenever the operator requests it. Transmit to cell location measurement server 150.

On the other hand, for interworking between the mobile terminal 110 and the location calculation server 130, a protocol for location measurement using the A-GPS via the medium network 120 (in the case of WCDMA system RRC (Radio Resource Control) ), A Radio Resource LCS Protocol (RRLP) in the case of a GSM system, and IS-801) in the case of a CDMA system, and a mobile terminal 110 and a location calculation server to provide a location measurement service using a UEPell database. The terminal 130 collects terminal measurement data for constructing a UPICEL database by using a protocol defined separately between 130 and uses the parameters as a parameter for a location request. The execution mode of this separately defined protocol is only possible in the TCP / IP mode. In the TCP / IP mode, the mobile terminal 110 and the location calculation server 130 interoperate with each other in a TCP / IP scheme through Node-B, RNC (Radio Network Control), data network, etc. of the MS mobile communication system.

The location information center 140 is a server which is implemented as a general network server and processes location information of the mobile terminal 110 received from the location calculation server 130 and the uPICE location measurement server 150.

The uPicell location measurement server 150 according to an embodiment of the present invention is implemented as a conventional network server, constructs and stores a uPiCell database, and receives log data from the location calculation server 130 to receive terminal measurement data. Extraction, and selects an optimal u-ficell that matches the pattern of the terminal measurement data from the u-ficell database to generate the position information of the optimum u-ficell as the position information of the mobile terminal (110).

That is, the uPiCell position measurement server 150 constructs and stores a pre-established uPiCell database, while using a protocol defined separately as the position calculation server 130 in conjunction with the position calculation server 130. Request the data necessary for the location measurement of 110, and as a result receives the log data from the location calculation server 130 to extract the terminal measurement data measured by the mobile terminal 110 from the log data and using the UPICEL database Search for and select a u-cell that matches the pattern with the information recorded in the terminal measurement data among the u-cell and generates the location information of the corresponding u-cell as the location information of the mobile terminal (110).

In addition, the U-Ficell location measurement server 150 according to an embodiment of the present invention updates the U-Ficell database by using the base station change information received from the central management system 160.

The central management system 160 is a base station management system (BSM) that manages a base station (Node-B) and a control station (RNC) accommodated in a mobile switching system (MSC) of the UTM network 120. Manager and manages information on all base stations and control stations accommodated in the base station management system.

The central management system 160 according to an embodiment of the present invention collects base station variation information, which is information on base station variation in the UTM network, and transmits the base station variation information to the UPI cell location measurement server 150.

FIG. 2 is a block diagram schematically illustrating an electronic configuration of a network-based location measurement server using a uPICell database according to an embodiment of the present invention.

The network-based location measurement server using the uPiCell database according to an embodiment of the present invention may be implemented as the above-described uPiCell location measurement server 150 through FIG. 1. Therefore, hereinafter, for convenience of description, a network-based location measurement server using a uficell database according to an embodiment of the present invention will be abbreviated as a uficell location measurement server 150.

The uPicell location measurement server 150 according to an embodiment of the present invention includes a network communication unit 210, a uPiCell database unit 220, a uPiCell database construction unit 230, a uPiCell database management unit 240, a uPiCell The positioning unit 250 and the control unit 260 is included.

The network communication unit 210 is a communication means including a memory for storing a program for performing a communication, a microprocessor, a communication modem, and the like. The network communication unit 210 communicates with the UTM network 120 or the location information center 130 to control the communication. The 260 may transmit and receive data with the mobile terminal 110 or the location calculation server 130.

The upicell database unit 220 stores the uficell database constructed by the uficell database construction unit 230.

The UPICEL database construction unit 230 is a data construction means for constructing a UPICEL database, and divides the UTM service area into a plurality of PICELs in a grid unit to display latitude and longitude data and propagation characteristics of the region where each UPICEL is located. Build a UPICEL database by storing it as a database.

The UPICEL database management unit 240 is a management means for updating the UPICEL database stored in the UPICEL database unit 220. When the control unit 260 receives the base station change information from the central management system 160, the base station change information is received. By using or to delete or add the information on the base station specified in the base station change information in the u-cell database to update the u-cell database.

In addition, when the control unit 260 periodically receives log data from the location calculation server 130, the uPICE database manager 240 parses the received log data to extract the terminal measurement data, and uses the terminal measurement data to copy the terminal data. Update the cell database.

When the control unit 260 receives the log data received from the position calculation server 130, the u-cell positioning unit 250 extracts the terminal measurement data measured by the mobile terminal 110 using the log data, and the u-fi cell In the uPicell database stored in the database unit 220, an optimal uPiCell that matches the pattern of the terminal measurement data is selected, and location information of the optimal uPiCell is generated as the location information of the mobile terminal 110.

The controller 260 controls the UPICEL database construction unit 230 to construct the UPICEL database and stores the UPICEL database in the UPICEL database unit 220, and when the position measurement of the mobile terminal 110 is requested, the position calculation server 130. Receives log data from the control unit to generate the location information of the mobile terminal 110, the UPICEL positioning unit 250, and periodically receives a plurality of log data stored in the location calculation server 130 to the UPICEL database It transmits to the management unit 240, and receives the base station change information from the central management system 160, and transmits to the U-cell database management unit 240, the U-fi cell database management unit 240 is stored in the U-fi cell database 220 Control to update the database.

3 is a conceptual diagram for explaining a UPICEL database according to an embodiment of the present invention.

The mobile terminal 110 and the location calculation server 130 interwork with each other by using a positioning protocol. The location calculation server 130 receives satellite data from a built-in reference satellite receiver and requests for location measurement. Perform the position measurement of 110). The location calculation server 130 separately selects only satellite data that provides proper positioning accuracy among the location measurement results using the satellite. Here, the appropriate positioning accuracy is determined by measuring a position of the mobile terminal 110 by selecting a predetermined number or more of satellites, for example, five or more satellites, and whether or not the level of uncertainty, which is a criterion for determining position accuracy, is satisfied from the position result data. To judge.

In addition, the location calculation server 130 generates log data by logging for a predetermined period of time in order to construct a latitude-longitude data, which is a location measurement result, and terminal measurement data for network positioning received from the mobile terminal 110, into a UPIcell database. After the transfer to the uPicell position measurement server 150.

As shown in FIG. 3, the uPI cell location measurement server 106 divides a UTM service area into a plurality of u-cells in a grid unit in advance, and the latitude-longitude data included in the terminal measurement data extracted from the log data includes a plurality of u-fibers. The UPI cell database is continuously constructed by searching whether the cell corresponds to the latitude and longitude range of the cell and storing necessary parameters extracted from the terminal measurement data in the most suitable uPI cell corresponding to the latitude and longitude range.

Here, the UPICEL database can be constructed by selecting only data with high position accuracy from the position measurement using satellite as well as the position measurement using A-GPS (Assisted GPS) and the network-based position measurement (eg triangulation technique). It may be. Here, the data with high positional accuracy means a positioning result when the number of satellites is a certain number or more, for example, five or more and the uncertainty is more than a required level in the position measurement using the A-GPS. In addition, the data with high positional accuracy in the network-based position measurement means a positioning result when there are more than a predetermined number of cells, for example, 4 or more, and when a repeater is not used in all used cells.

In addition, it is possible to construct a UPIcell database by selecting good data from satellite positioning equipment (Simulator) or an arbitrary location by a person or multiple satellites simultaneously.

4 is a flowchart illustrating a method for constructing a UPICEL database according to an embodiment of the present invention.

The method of constructing the UPICEL database has been briefly described with reference to FIG. 3, but the following describes the method of constructing the UPICEL database in detail.

The UPI cell location measurement server 150 divides the UTM service area into a plurality of UPI cells of a grid unit having a predetermined size, and assigns a UPI cell ID having unique information to each UPI cell (S410).

That is, the UPICell location measuring server 150 selects a service range for a region to provide a location measurement service using a UPICell database in the UTM service area. The service range must be a range that covers the entire service area. The value specifying the range is in the form of a rectangle. Therefore, as the information for specifying the service range, the longitude value of the upper left corner and the longitude value of the lower right corner are required in the rectangular corner. Taking Korea as an example, if only South Korea except North Korea is designated as a service range, a rectangle that can cover all of these areas is determined, and the latitude and longitude values for the two points of the above-described rectangular corners are needed.

After the service range is selected as described above, the UPI cell positioning server 150 is a predetermined size within the rectangle of the service range (for example, the horizontal and vertical values 100m * 100m, 75m * 75m, 50m * 50m And a service range by a grid unit having a size of any one of 25 m * 25 m) to generate a plurality of u-ficells, and a u-ficell ID having unique information is assigned to each u-ficell. On the other hand, since the latitude and longitude values for the two points of the corners of the rectangle of the service range are known, it is possible to naturally calculate the latitude and longitude values, that is, where the uPIcells that divided the service range are located on the map.

In addition, the U-ficell location measurement server 150 collects location measurement results for each PICEL ID (S420). In step S410, the UPI cell location measurement server 150, which divides a service range into a plurality of UPI cells and gives a UPI cell ID, uses a location based service (LBS) call to construct a UPI cell database. Collect the measurement results.

That is, the uPICE positioning server 150 calculates the position of the mobile terminal 110 and the position when the mobile terminal 110 having the GPS function and the position calculation server 130 interlock with each other to perform the position measurement using the GPS. Generate and store messages sent and received between the servers 130 as log data in the location calculation server 130, and when the location-based service call is a successful call using GPS, the terminal measurement data included in the log data includes service base station information. Since the neighbor base station information and the latitude and longitude data are included, the UPIcell location measuring server 150 receiving the log data from the location calculation server 130 and extracting the terminal measurement data acquires the latitude and longitude value at which the mobile terminal 110 is located. do.

In this way, the UPICell location measurement server 150 is linked with the location calculation server 130, based on a number of locations for a period of time suitable for building a UPICEL database such as 3 months, 6 months or 1 year. By collecting service calls, we collect location measurement results.

As in step S420, the u-ficell positioning server 150 that collects the position measurement results for each u-cell ID extracts necessary parameters from the position-measurement results for each u-cell ID and matches each u-cell ID by matching the u-cell database. Build (S430).

That is, the u-cell location measuring server 150 checks the latitude-longitude value of the position measurement result collected in step S420 and searches for which u-cell among the plurality of u-cells.

In this way, if the latitude and longitude value is matched to the u-cell, the latitude-longitude value of all the position measurement results is matched to at least one or more of the plurality of blood cells, and some u-cells do not include any location measurement result. Some upicells may include one position measurement result, and some upicells may include a plurality of position measurement results.

Therefore, the U-Ficell positioning server 150 collects only the location measurement results included in each U-Ficell, and then uses the service base station identification information (MCC, MNC, U-CID, PSC) as a kit value for the service base station. The remaining information (RSSI, CPICH RSCP, CPICH Ec / No, SFN-SFN OTD, Rx-Tx Time Difference) is averaged, and the neighbor base station information is similarly used for the rest of the neighbor base station using neighbor base station identification information (PSC) as a secondary kit value. The information (CPICH Ec / No of the neighboring base station, CPICH RSCP of the neighboring base station, SFN-SFN OTD of the neighboring base station, Rx-Tx Time Difference) is calculated as an average value.

Thereafter, the UPI cell location measuring server 150 is an average value of the remaining information for the service base station with the service base station identification information as a key value, an average value of the remaining information for the neighbor base station with the neighbor base station identification information as the auxiliary kit value, and a position measurement result. By extracting the latitude and longitude data contained in the necessary parameters and storing the data in the corresponding upicell, a uficell database is constructed.

In this case, the unique information of the u-cell ID refers to the latitude-longitude data of the vertices of the grids of the u-cell and the vertices of all four sides of the u-cell.

On the other hand, in the present invention, the location measurement result used by the UEPell location measurement server 150 when building the UEFell database may be a location measurement result of a satellite-based location service subscriber in commercial service or a network-based location measurement in commercial service. It may be a location measurement result of a service subscriber, satellite-based location measurement result by direct measurement at the request of an operator, or network-based location measurement result by direct measurement at the request of an operator.

5 is a flowchart illustrating a method for updating a UPICEL database according to an embodiment of the present invention.

Even after the UPICEL database is initially established, it is necessary to continuously update the UPICEL database according to the frequency of generating location data using A-GPS as log data and the change of the situation of the UTM network 120. Such an update may be performed periodically according to an update time condition set by an operator, or may be made one-time according to an operator's request.

When the update cycle or the update is required by the operator, the uPiClip position measuring server 150 receives log data that is a result of position measurement using the A-GPS stored in the position calculating server 130 or the position measuring center 140. After parsing, the terminal measurement data is extracted to search for a u-cell ID corresponding to the latitude and longitude data of the terminal measurement data (S510). Here, the location measurement result using the A-GPS stored in the location calculation server 130 or the location measurement center 140 may be a location measurement result by satellite location measurement in a commercial service, but the satellite measurement service in a commercial service is not provided. There is also a manual available, i.e. location measurement results using A-GPS by direct measurement.

The u-cell location measurement server 150 that retrieves the u-cell ID is configured to determine the terminal measurement data extracted from the log data by the service base station identification information (ie, MCC, MNC, U-CID, PSC) stored in the u-cell of the u-cell ID. It is checked whether the service base station identification information (ie, MCC, MNC, U-CID, PSC) is the same (S520).

If the UE base station measurement server 150, as a result of the check in step S520, the service base station identification information stored in the UE cell of the corresponding UI cell ID is not the same as the service base station identification information of the log data (i.e., MCC, MNC, U- If at least one of the CID and the PSC is not the same), the location measurement result extracted from the log data is stored in a separate group in the database of the corresponding uPICS (S532).

In the present invention, through the same procedure as in step S532, by updating all of the UPIcell database in consideration of the handoff situation that can occur in the corresponding UPICEL, it is possible to improve the data integrity of the UPICEL database. That is, in the conventional network-based location measurement method, since the data was not managed in detail in consideration of such handoff situation, various types of location measurement data and pattern matching rate occurring in the same area are degraded, thereby making the location accuracy accurate. Although there is a problem of this deterioration, in the present invention, by introducing a grouping system as described above, it is possible to solve the problems of the conventional method to improve the data integrity of the UPICEL database.

In addition, if the service base station identification information stored in the u-cell of the corresponding u-cell ID is the same as the service-base station identification information of the log data, the U-Ficell position measurement server 150 checks all the PSCs and the corresponding PSCs extracted from the log data. Comparing all the PSCs stored in the u-cell of the u-cell ID to search for a specific specific PSC (S530).

The uPiCell position measurement server 150 searches for a specific PSC and checks whether there is a specific PSC (S540).

As a result of the check in step S540, the uPiCell positioning server 150 adds a new PSC to the uPiCell database (i.e., a PSC not found in the uPiCell database but only from the location measurement result extracted from the log data). The SFN-SFN OTD and the signal strength for the PSC are stored in the UPICEL database (S542).

In addition, if the specific PSC is found, the UEPEL positioning server 150 determines that the SFN-SFN OTD and the SFN-SFN OTD extracted from the signal strength and log data are stored in the UPICEL database for the specific PSC searched if there is a specific PSC. And the average value of the signal strength is updated in the uPicell database (S550). In this way, the SFN-SFN OTD and the average value of the signal strengths updated in the UPICEL database are used as reference data for the actual position measurement later.

On the other hand, if there are a plurality of SFN-SFN OTDs and signal strengths for a specific PSC matched in the UPICell database, all SFNs are less than a certain number, for example, if the number of SFN-SFN OTDs or signal strengths is less than six. Obtain the average value of the SFN OTD and the signal strength and update it as the reference data.In case of 6 or more, the average value is obtained by excluding the value that falls within the reference range, for example, the value is outside the range of 20% for each of the upper and lower sides. do.

6 is a flowchart illustrating an update method according to a change of a base station of a UPICell database according to an embodiment of the present invention.

In the present invention, changes of the base station in the UTM network 120 are reflected in the UPI cell database for optimization of the UPI cell database. The change of the base station is a result of cell planning of the mobile network operator, and the addition of the base station, the change of the base station, the deletion of the base station, the addition of the exchange in the base station according to the increase of the subscriber and the change of the name of the exchange in the specific base station, etc. have. In order to maintain an optimal UPI cell database, when the base station fluctuates, related data in the UPI cell database belonging to the changed base station must also be changed. According to the present invention, the base station management system provided by the mobile communication provider is linked with the base station management system. You can also change the UPICEL database according to the change.

The uPcell location measurement server 150 receives the base station change information generated in the UTM network 120 from the central management system 160 (S610). The uPICE location measurement server 150 may receive the base station change information from the central management system 160 at a predetermined time every day, and may receive from the central management system 160 in real time whenever a change occurs in the base station.

Upon receiving the base station variation information, the uPICE location measuring server 150 checks whether the base station variation information is base station deletion information (S610).

If the base station variation information is the base station deletion information, the uPiecell position measurement server 150 deletes all information on the deleted base station from the group information stored in the UE cell generated based on the deleted base station specified in the base station deletion information in the UPI cell database. (S612). In other words, the location measurement server 150 finds the u-cells of all the u-cell IDs established in the u-cell database based on the base station (exchange station) and based on the corresponding base station (exchange station) among the group information stored in the database of the u-cell. Delete all the built information.

If the base station variation information is not the base station deletion information, the u-Piece cell position measurement server 150 checks whether the base station variation information is the base station additional information (S620).

If the base station fluctuation information is the base station additional information, the upi cell location measurement server 150 receives log data for a preset time from the location calculation server 130 to construct a ufi cell database for the additional base station specified in the base station additional information. (S622). In other words, the UPI cell location measurement server 150 is based on the location measurement result using the A-GPS for a predetermined time (time equal to or less than the predetermined period) after a preset time (1 week, etc.) or a time set by the operator. Build a UPICEL database using the log data.

If the base station variation information is not the base station additional information, the u-Piece cell position measurement server 150 checks whether the base station variation information is the base station change information (S630).

If the base station change information is the base station change information, the u-Ficell position measurement server 150 performs the base station deletion operation as described above in step S612 and performs the base station addition operation as described above in step S622 (S632).

As described above, in the present invention, by maintaining the A-GPS location measurement result using the A-GPS continuously updated, and configured to reflect the base station changes, it is possible to always maintain the optimum U-Fell cell database.

FIG. 7 is a flowchart illustrating a network-based location measuring method using a UPICEL database according to an embodiment of the present invention.

In the state of constructing and storing the UPICEL database (S710), the UPICEL position measuring server 150 checks whether or not the position measurement of the mobile terminal 110 is requested (S720), and measures the position of the mobile terminal 110. When the request is made, the log data is received from the location calculation server 130 and parsed, the terminal measurement data measured by the mobile terminal 110 is extracted, and the primary u-cell candidate group is selected using the terminal measurement data ( S730).

Here, the primary u-cell candidate group refers to a group of at least one u-cell that has the same service base station identification information (MCC, MNC, U-CID, PSC) included in the terminal measurement data among a plurality of u-cells in the u-cell database.

The u-cell location measurement server 150 selecting the primary u-cell candidate group checks whether there is a primary u-cell candidate group (S740).

As a result of the check in step S740, the uPIF cell location measuring server 150 has a cell coverage range centered on the connection line between all neighboring cells of the cell where the mobile terminal 110 is located and the center point of the service base station when there is no primary UE group. The center point of the intersection point with the circle is determined as position information of the mobile terminal 110 (S742).

In addition, the u-ficell location measuring server 150 searches for the u-ficell located farther than the reference distance from the primary-users and excludes it from the primary-users. A second uffy cell candidate group is selected (S750).

Here, the u-ficell location measurement server 150 may search for the u-ficell located above the reference distance from the center of the cell among the primary u-cell candidate groups as the u-ficell located farther than the reference distance.

In addition, the uPiCell position measurement server 150 calculates an average separation distance by averaging the distance between each uPiCell of the primary UPICEL candidate group from the center of the cell, and then averaging from the center of the cell of the first UPICEL group after the primary UPICEL. It is also possible to search for a u-ficell located above the separation distance as a u-ficell located farther than the reference distance.

In addition, the u-cell location measurement server 150 may search for a u-ficell located outside the cell coverage at the center of the service base station among the primary u-cell candidate groups as a u-cell located farther than the reference distance.

The UEPel position measuring server 150 that selects the secondary UECell candidate group selects the UECP cell having the best match with the terminal measurement data extracted from the log data among the UECP candidate groups as the optimal UEPcell (S760), The location information of the cell is determined as location information of the mobile terminal 110 (S770).

Here, the best matching upicell refers to a uficell having the smallest difference between the base station information stored in the uficell database and the base station information extracted from the terminal measurement data among the secondary uficell candidate groups. Here, the base station information includes service base station identification information (MCC, MNC, U-CID, PSC) and neighbor base station identification information (MCC of neighboring base station, MNC of neighboring base station) among service base station information and neighbor base station information included in the terminal measurement data. All other information except the U-CID of the neighbor base station and the PSC of the neighbor base station (ie, the RSSI of the service base station information, the CPICH RSCP, the CPICH Ec / No, the SFN-SFN OTD, the Rx-Tx Time Difference, and the RSSI of the neighbor base station information). , CPICH RSCP, CPICH Ec / No, SFN-SFN OTD, Rx-Tx Time Difference).

On the other hand, it is described through the selection in Fig. 7 as the primary unit of the first Yuficell candidate in step S730, and then selects the second candidate unit and the second candidate unit as shown in step S750, the second candidate group according to the operator's selection It may be configured to select the best eupicel from the primary eupicel candidate group without screening.

FIG. 8 is a flowchart illustrating a method of selecting an optimal u-cell having a best match with terminal measurement data in the u-cell candidate group.

In the network-based location measurement method using the above-described uficell through FIG. 7, step S760 selects an optimal fiscel having the best match with the terminal measurement data extracted from the log data in the secondary uficell candidate group. Referring to FIG. 8, a process of selecting an optimal picel having the best match with the terminal measurement data in the secondary yupicell candidate group will be described.

The u-cell location measurement server 150 that selects the second u-cell candidate group weights the degree of conformity of the PSC of each u-fi cell of the second u-cell candidate group and the PSC of the base station information extracted from the terminal measurement data (S810).

In addition, the UEF cell location measurement server is SFN-SFN for the same PSC as the PSC of the base station information extracted from the UE measurement data in each of the UEs from the UESC and the SFN-SFN OTD of the base station information extracted from the UE measurement data A weight is assigned to the degree of consistency of the designated stages of the OTD (S820).

In addition, the UPI cell location measurement server 150 designates the signal strength for each PSC signal of the base station information extracted from the UE measurement data and the signal strength for the same PSC as the PSC of the base station information extracted from the UE measurement data in each UEFICell among the UEPI cell candidate groups. A weight is given to the degree of consistency of the steps (S830).

As described above, the u-cell location measuring server 150 selects an optimal p-cell having the best match as a result of weighting the second u-cell candidate group (S840).

Although FIG. 8 illustrates that step S810, step S82, and step S830 are all performed, only one of each step may be performed, or only two steps may be performed, and all steps may be performed. will be.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, the present invention constructs the UE measurement data having the highest position measurement accuracy in the UTM network, updates the fluctuation, and searches the UPI cell database when requested to measure the position of the mobile terminal. It is applied to the method, server, and system field to determine the optimal u-ficell that is matched with the terminal measurement information measured by the mobile terminal and to determine the location information of the optimal u-ficell as the location of the mobile terminal. Unlike the measurement method, it is a very useful invention to generate an effect that can perform a position measurement with improved positioning accuracy and stability without installing the LMU in the base station.

1 is a block diagram schematically illustrating a network-based location measurement system using a UPICEL database according to an embodiment of the present invention;

FIG. 2 is a block diagram schematically illustrating an electronic configuration of a network-based location measurement server using a uPICell database according to an embodiment of the present invention. FIG.

3 is a conceptual diagram for explaining a UPICEL database according to an embodiment of the present invention;

4 is a flowchart illustrating a method for constructing a UPICEL database according to an embodiment of the present invention;

5 is a flowchart illustrating a method for updating a UPICEL database according to an embodiment of the present invention;

6 is a flowchart illustrating an update method according to a change of a base station of a UE cell according to an embodiment of the present invention;

7 is a flow chart for explaining a network-based location measuring method using a UPICEL database according to an embodiment of the present invention;

FIG. 8 is a flowchart illustrating a method of selecting an optimal picel having the best match with UE measurement data in a UE cell candidate group.

<Description of Symbols for Main Parts of Drawings>

110: mobile terminal 120: UTM network

130: location calculation server 140: location information center

150: yuppicell location measurement server 160: central management system

210: network communication unit 220: UPICEL database unit

230: the UPICEL database construction unit 240: the UPICEL database management unit

250: upicell positioning unit 260: control unit

Claims (37)

In a system for measuring position on a network basis, A mobile terminal for collecting and transmitting terminal measurement data for position measurement; A UTM network providing a mobile communication service including a data communication service to the mobile terminal; A location calculation server which receives the terminal measurement data and generates and transmits log data which is a location measurement result using the terminal measurement data; And Construct and store a uficell database, receive the log data, extract the terminal measurement data using the log data, select an optimal uficell that matches the pattern with the terminal measurement data in the upicell database, and U-Ficell location measurement server for generating location information of an optimal u-Fee cell as location information of the mobile terminal Including, but the UPIcell database is a database of the latitude and longitude data and propagation characteristics of the region where the UPICEL is located, the UPIcell is generated by dividing the UTM service area by a grid unit Network-based location measurement system using S. eupicel database. delete The method of claim 1, wherein the position measuring system, And a central management system that collects base station variation information, which is information on base station variation in the UTM network, and transmits the base station variation information to the UPI cell location measurement server, wherein the UPI cell location measurement server uses the base station change information. A network-based location measurement system using a UMP cell database, characterized in that for updating the UPI cell database. A server connected to a mobile terminal and a location calculation server using a UTM network to determine a location of the mobile terminal based on a network. A network communication unit configured to communicate with the UTM network and the location calculation server; A u-ficell database unit for storing a u-ficell database; A u-ficell database construction unit configured to generate the u-ficell database by constructing a propagation characteristic and latitude-longitude data of an area in which a plurality of u-ficells generated by dividing a U-MS service area by a grid unit as a database; The terminal measurement data measured by the mobile terminal is extracted by using log data received from the location calculation server, and an optimal ufi cell that matches the pattern of the terminal measurement data is selected from the upi cell database to select an optimal ufi cell. A u-cell positioning unit that generates location information as location information of the mobile terminal; And The user equipment is configured to store the u-cell database and store the u-cell database and store the log data from the location calculation server when the location measurement of the mobile terminal is requested. Control unit for controlling to generate location information of the mobile terminal Network-based location measurement server using the UTM UEPIcell database comprising a. The method of claim 4, wherein the positioning server, Network-based location measurement server using a UMP cell database, characterized in that it further comprises a UPI cell database management unit for updating the UPI cell database. The method of claim 5, wherein the UPICEL database management unit, When the control unit receives base station variation information from the central management system, the UMP cell database is updated by deleting or adding information on the base station specified in the base station variation information in the UPI cell database. Network based location server using database. The method of claim 5, wherein the UPICEL database management unit, The network-based location measurement server using the UMP cell database, characterized in that for updating the UPI cell database using the terminal measurement data extracted by parsing the log data. The method of claim 4, wherein the UPICEL database construction unit, By dividing the service area by the grid unit and assigning a uficell ID to each of the grids, collecting location measurement results for each of the uficell IDs, extracting necessary parameters from the location measurement results, and matching and storing the location parameters. A network-based location measurement server using a UMPS database, characterized in that to construct a UPICEL database. The method of claim 4, wherein the eupicel positioning portion, A base station extracted from the UE measurement data is selected from the UE measurement data using a base station identification information from the UE base cell including a plurality of UE cells including a plurality of UE cells from the UE cell data stored in the UE cell database and the UE measurement data. A network-based location measurement server using the UTM UEPIcell database, characterized in that the UPICEL having the smallest difference in information is determined as the UPICELL having the best matching, and is selected as the optimal UPICEL. The method of claim 9, wherein the eupicel positioning portion, Using the UMPS UPI cell database, the optimal UPI cell is selected by assigning a weight to the degree of consistency of the PSC (Primary Scrambling Code) of each UPI cell and the PSC extracted from the UE measurement data. Network based location server. The method of claim 9, wherein the eupicel positioning portion, SFN-SFN Observed Time Difference (SFN-SFN OTD) for each Primary Scrambling Code (PSC) extracted from the UE measurement data and SFN-SFN OTD for the same PSC as the PSC in each of the UEC cells among the candidate UEs A network-based location measurement server using a UMPS database, characterized in that for selecting the optimal UPICEL by giving a weight to the degree. The method of claim 9, wherein the eupicel positioning portion, Selecting the optimal UEC by weighting the signal strength for each PSC (Primary Scrambling Code) extracted from the UE measurement data and the degree of coherence of the signal intensity for the same PSC as the PSC in each of the UECP cells Network-based location measurement server using the UTM UEPIcell database, characterized in that. The method of claim 4, wherein the eupicel positioning portion, From the UE measurement data, the UE-cell data is selected from the UE-cell database to select a primary UE including a plurality of EU cells, and a UE is located farther than a reference distance from the candidate cells. The searched u-cell is selected as a secondary u-cell candidate group except the primary u-cell candidate group, and the difference between the base station information stored in the u-cell database and the base station information extracted from the terminal measurement data is the best among the second u-cell candidate group. A network-based location measurement server using a UMPS database, characterized in that the small judging cell judging as the best matching UPICEL to select the optimal UPICEL. The method of claim 13, wherein the eupicel positioning portion, A network-based location measurement server using a UMPS database to search for a UPIC cell located above a predetermined reference value from a center of a cell among the primary UEs as a UPIC cell located farther than the reference distance. . The method of claim 13, wherein the eupicel positioning portion, The average spaced distance is calculated by averaging the distance between the centers of the cells from the primary unit of the primary unit, and the spaces exceeding the average spaced distance from the center of the cell. A network-based location measurement server using a UMPS database, characterized in that the search as a UPIcell located farther than the reference distance. The method of claim 13, wherein the eupicel positioning portion, A network-based location measurement server using a UMPS UEPIcell database, which searches for a UFIC cell located outside the cell coverage at a center of a service base station among the primary UEs as a UPIC cell located farther than the reference distance. The method of claim 9, wherein the eupicel positioning portion, If there is no candidate UE group to select by using UE cell search data among the UE measurement data, the intersection point between the connection line between adjacent cells of the cell where the mobile terminal is located and the circle of the cell coverage range centered on the center point of the serving base station A network-based location measurement server using the UMPS database, characterized in that the center point is determined as the location information of the mobile terminal. In a method for establishing a UPICEL database by a UPICEL position measurement server connected to a mobile terminal and a position calculation server using a UTM network, (a) generating a plurality of uPIcells by dividing the UTM service area by grid units; (b) collecting a plurality of position measurement results for the plurality of eupicels; (c1) checking the latitude data and the longitude data included in the plurality of position measurement results and searching for the upicell corresponding to the latitude data and the longitude data among the plurality of upicells; And (c2) extracting the necessary parameters from the position measurement results corresponding to each of the u-cells and storing them in the u-cells database for the u-cells; The required parameters may include an average value of the remaining information about the service base station using the service base station identification information as a kit value, an average value of the remaining information about the adjacent base station information using the neighbor base station identification information as the auxiliary kit value, latitude and longitude data, The service base station identification information may be any one of a mobile country code (MCC), a mobile network code (MNC), a UTRAN cell identity (U-CID), and a primary scrambling code (PSC). One or more pieces of information on the serving base station include received signal strength indication (RSSI), common pilot channel received signal code power (CPICH RSCP), and common pilot channel signal strength. (CPICH Ec / No), Rx-Tx Time Difference) and SFN-SFN Observed Time Difference (OTD) How to build a database of empty Estonian dermoid cells. The method of claim 18, wherein in step (a), And the plurality of u-cells have a u-cell ID having unique information, wherein the unique information is latitude data and longitude data of vertices of the grid and four corners of the grid. The method of claim 18, wherein in step (b), And the location measurement result is a location measurement result of a satellite-based location measurement service subscriber. The method of claim 18, wherein in step (b), And the location measurement result is a location measurement result of a network-based location measurement service subscriber. delete delete delete delete delete delete In the method for measuring the position of the mobile terminal by the UPI cell location measurement server connected to the mobile terminal and the location calculation server using a UMT network, (a) receiving log data from the location calculation server and extracting terminal measurement data from the log data; (b1) selecting a candidate UE group including a plurality of UE cells from the UE database using service base station identification information among the UE measurement data; (b21) checking whether there is a candidate for the UEC, and if the UE has a candidate group, setting the UE candidate as a primary UE group; (b22) selecting a second unit of the yupcell candidate group by excluding the first unit of the primary unit of the yupicell by searching for the unit of the primary unit having a reference distance exceeding a reference distance; (b23) Judging the smallest difference between the base station information stored in the UE cell database and the base station information extracted from the UE measurement data among the secondary UE cells, the UE unit is selected as the best matching UE. Doing; And (c) generating location information of the optimum u-cell as location information of the mobile terminal; Including, but the UPIcell database is a database of the latitude and longitude data and propagation characteristics of the region where the UPICEL is located, the UPIcell is generated by dividing the UTM service area by a grid unit A network-based location measurement method using S Eupicel database. delete delete The method of claim 28, wherein the position measuring method, After the step (b23), (b24) it is determined whether there is the candidate group of the UE, and if there is no candidate group of the UE, the cell centered on the connection line between the adjacent cell of the cell where the mobile terminal is located and the center of the serving base station And determining the center point of the intersection point with the circle of the coverage range as the location information of the mobile terminal. 29. The method according to claim 28, wherein in step (b23), the eupicel positioning server, Using the UMPS UPI cell database, the optimal UPI cell is selected by assigning a weight to the degree of consistency of the PSC (Primary Scrambling Code) of each UPI cell and the PSC extracted from the UE measurement data. Network based location measurement method. 29. The method according to claim 28, wherein in step (b23), the eupicel positioning server, SFN-SFN Observed Time Difference (SFN-SFN OTD) for each Primary Scrambling Code (PSC) extracted from the UE measurement data and SFN-SFN OTD for the same PSC as the PSC in each of the UEC cells among the candidate UEs A network-based location measurement method using a UMPS database, characterized in that the weight of the degree is selected by selecting the optimal UE. 29. The method according to claim 28, wherein in step (b23), the eupicel positioning server, Selecting the optimal UEC by weighting the signal strength for each PSC (Primary Scrambling Code) extracted from the UE measurement data and the degree of coherence of the signal intensity for the same PSC as the PSC in each of the UECP cells Network-based location measurement method using the UTM UEPIcell database, characterized in that. In a method of updating a uficell database by a uficell positioning server connected to a mobile terminal and a location calculation server using a uem network, (a) parsing a plurality of log data stored in the location calculation server and retrieving a specific upicell corresponding to the log data from the upicell database; (b) checking whether the service base station identification information stored in the specific u-cell and the service base station identification information extracted from the log data are the same; (c) When the service base station identification information stored in the specific u-cell is identical to the service base station identification information extracted from the log data, all primary scrambling codes (PSC) extracted from the log data are stored in the u-cell database of the specific u-cell. Searching for a matching specific PSC against all PSCs; (d) If the specific PSC is present, the average value of the SFN-SFN Observed Time Difference (OTD) and signal strength values stored in the UCPell database of the specific PSC and the SFN-SFN OTD and signal strength values extracted from the log data is calculated. Updating the uPiCell database; And (e) in the absence of the specific PSC, adding a new PSC to the UPICEL database and storing the position measurement result and the signal strength value of the new PSC in the UPICEL database. Including, but the UPIcell database is a database of the latitude and longitude data and propagation characteristics of the region where the UPICEL is located, the UPIcell is generated by dividing the UTM service area by a grid unit How to update S Eupicel database. The method of claim 35, wherein the update method, After the step (e), (f) if the service base station identification information stored in the specific u-cell and the service base station identification information extracted from the log data are not the same, the position measurement result extracted from the log data is stored in the u-ficell database. The method of updating a UMPS database further comprising the step of storing in a separate group therein. The method of claim 35, wherein the update method, After step (e), (g) receiving base station variation information from the central management system; (h) if the base station variation information is base station deletion information, deleting information on the deleted base station from the group information stored in the UE cell generated based on the deleted base station specified in the base station deletion information in the UPI cell database; (i) if the base station variation information is base station additional information, receiving log data for a preset time from the location calculation server and constructing a UPI cell database for the additional base station specified in the base station additional information; And (j) if the base station change information is base station change information, performing step (h) and step (i) with respect to the changed base station specified in the base station change information; Update method of the UMPS UPIcell database, characterized in that it further comprises.

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