KR101503488B1 - Server and Method for Building pCell Database - Google Patents
Server and Method for Building pCell Database Download PDFInfo
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- KR101503488B1 KR101503488B1 KR1020080094498A KR20080094498A KR101503488B1 KR 101503488 B1 KR101503488 B1 KR 101503488B1 KR 1020080094498 A KR1020080094498 A KR 1020080094498A KR 20080094498 A KR20080094498 A KR 20080094498A KR 101503488 B1 KR101503488 B1 KR 101503488B1
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Abstract
The present invention relates to a server and a method for constructing a pCell database.
When constructing a pCell database, when there are a plurality of active PNs having a signal-to-noise ratio equal to or greater than a predetermined reference value in PPM data corresponding to predetermined small-diameter data, a plurality of active PNs are allocated in a pCell database corresponding to predetermined small- lt; RTI ID = 0.0 > pCell < / RTI >
According to the present invention, since the pCell positioning server stores not only the reference PN of the PPM data but also the neighboring PN corresponding to the active PN as the reference PN information in the pCell database for the handoff boundary region between the base stations having a plurality of active PNs, The pCell positioning of the mobile communication terminal located at the border area of the handoff can be accurately performed.
pCell database, pCell, reference PN, signal to noise ratio, active PN
Description
The present invention relates to a server and a method for constructing a pCell database. More particularly, the present invention relates to a server and a method for constructing a pCell database by using PPM (Pilot Phase Measuremtnt) data and up / longitude data measured by a mobile communication terminal in detecting a position of a mobile communication terminal using a pCell database .
The network-based positioning method using the pCell database is a positioning method for supplementing the conventional positioning method, the hybrid method combining the network-based method, the handset-based method, the network-based method, and the handset-based method , The location of the corresponding terminal is determined in the same manner as in FIG.
First, in order to determine the location of the terminal using the network-based positioning method using the pCell database, the pCell positioning server constructs a pCell database in which the location measurement service target area is divided into grid units of a predetermined size (S110) It is continuously checked whether a positioning request has occurred from the subscriber terminal of the subscriber's mobile communication terminal (S120).
When the positioning request is generated from the subscriber terminal, the position calculation server receives the PPM (Pilot Phase Measurement) data received from the subscriber terminal from the position calculation server, compares the PPM data with the pCell database to determine the matching pCell, As a measurement result, a location measurement result is transmitted to a location based service platform (LBSP) that provides a location based service (S 130). In this case, the position calculation server is a Position Determining Entity (PDE) in a synchronous Code Division Multiple Access (CDMA) system, a Position Server (PS) in an asynchronous W-CDMA In GSM (Global System for Mobile Communication), SMLC (Serving Mobile Location Center) is applied.
The conventional scheme for constructing the pCell database in step S110 of FIG. 1 is the same as that of FIG.
Figure 2 is a flow diagram illustrating a conventional method for building a pCell database.
First, in order to construct a pCell database, a location measurement service area is divided into grid units of a predetermined size as shown in FIG. 3, and each grid is defined as pCell to give an ID (IDentification) having unique information (S210). Here, the unique information of the pCell ID may be latitude and longitude data (hereinafter referred to as "latitude and longitude data") of the center point of each lattice and latitude and longitude data of the four corners. Here, the size of the grid can be divided into 100 × 100 m, 50 × 50 m, 25 × 25 m, etc. according to the required positioning accuracy specification.
The positioning results for each pCell ID are collected (S220). Here, the positioning result includes the PPM (Pilot Phase Measurement) data received by the position calculation server from the mobile communication terminal and the latitude data (A-GPS or network-based positioning result), that is, the area where the mobile communication terminal is located .
The pCell database is constructed by extracting necessary parameters from the collected positioning result for each pCell ID (S230).
As described above, the pCell database constructed by the pCell positioning server stores the mobile communication system ID (SID), the mobile communication network ID (NID), and the base station ID (Base ID) by each pCell ID, Reference Pseudo Noise (Ref_PN) information and one or more neighboring PN (Measurement PN) information, and includes one reference PN information for each pCell ID.
Accordingly, when the pCell positioning server performs pCell positioning for a subscriber terminal located in a handoff boundary area between base stations, one of the one or more active pseudo noise (PN) can be a reference PN of PPM data, the pCell positioning server The reference PN included in the PPM data may be inconsistent with the reference PN information of the pCell corresponding to the area (the handoff boundary area) where the subscriber terminal is located in the pCell database. For example, when the subscriber terminal is located in the handoff boundary region of the A base station, the B base station and the C base station (when the active PN received by the subscriber terminal is a PN of an A base station, a PN of a B base station, and a PN of a C base station) The PN of the A base station is included as the reference PN in the PPM data collected by the subscriber terminal while the PN of the B base station is included as the reference PN information in the pCell database of the pCell corresponding to the handoff border region.
In this case, the pCell positioning server transmits pCell data including the reference PN included in the PPM data as reference PN information among the pCell database, that is, the propagation pattern of the reference PN and PPM data of the PPM data farther than the area where the subscriber terminal is physically located Since a similar pCell is searched and corresponding latitude and longitude information is provided as a positioning result, a positioning error larger than a general pCell positioning error occurs, which causes a problem in that the accuracy of the pCell positioning in the handoff border region is lowered.
In order to solve the above-described problems, in the present invention, when the pCell database is constructed, if there are two or more active PNs having a signal-to-noise ratio equal to or higher than a certain reference value in PPM data corresponding to predetermined low- And setting the reference PN information of the pCell corresponding to the predetermined small-diameter data.
According to an aspect of the present invention, there is provided a server for constructing a pCell database, comprising: a communication unit for providing a data transmission / reception function with a position calculation server; And receiving, when the PPM data includes a plurality of active PNs (Pseudo Noise) having a signal-to-noise ratio equal to or greater than a predetermined reference value, receiving the PPM (Pilot Phase Measurement) data and the lightness data from the position calculation server through the communication unit, And setting the active PN of the pCell database to a plurality of reference PN information of the pCell corresponding to the radius data in the pCell database.
According to another aspect of the present invention, there is provided a method for constructing a pCell database in a pCell positioning server, the method comprising the steps of: (a) receiving PPM data and latitude data from a position calculation server; Pseudo noise) is included in the PPM data; And (b) if the PPM data includes a plurality of active PNs, setting the plurality of active PNs as a plurality of reference PNs of the pCell corresponding to the lightness data in the pCell database, Lt; RTI ID = 0.0 > pCell < / RTI > database that improves positioning accuracy.
As described above, according to the present invention, when the pCell positioning server transmits the reference PN of the PPM data as well as the neighbor PN corresponding to the active PN as the reference PN to the pCell database for the handoff boundary region between the base stations having a plurality of active PNs Therefore, there is an effect that the pCell positioning of the mobile communication terminal located in the coverage area of the handoff can be accurately performed.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.
4 is a block diagram schematically showing a configuration of a pCell positioning system according to an embodiment of the present invention.
The pCell positioning system according to an embodiment of the present invention includes a
Upon receiving the location location request from the
When the
The PPM data includes a system ID (SID), a mobile communication network ID (NID), a base station ID (BS-ID), a reference PN (Ref_PN) which is a sector number of a currently serving base station, Phase and signal-to-noise ratios, adjacent PNs that are sector numbers of adjacent base stations, pilot phases within each adjacent PN, and signal-to-noise ratios.
The
In the present invention, the
Here, the
In the present invention, the plurality of PNs include the reference PN included in the PPM data and one or more adjacent PNs, and the predetermined reference value is preferably an active PN setting reference, that is, a value between -12 dB and -13 dB. Here, since the reference PN of the PPM data is the PN of the currently serving base station, its signal-to-noise ratio is greater than the active PN setting reference. Therefore, the reference PN of the PPM data is unconditionally active PN.
On the other hand, if the
When the
Accordingly, the
5 is a block diagram schematically illustrating an internal configuration of a pCell positioning server according to an embodiment of the present invention.
The
The
The
In the present invention, the
In the present invention, the predetermined reference value is preferably an active PN setting reference, that is, a value between -12 dB and -13 dB.
On the other hand, if one active PN (when only the reference PN of the PPM data is active PN) is included in the PPM data, the
The
In the present invention, the
6 is a flowchart illustrating a process of constructing a pCell database in a pCell positioning server according to an embodiment of the present invention.
The
If a plurality of active PNs are included in the PPM data in step S620, the
If one active PN is included in the PPM data that does not include a plurality of active PNs, that is, the PPM data, in step S620, one active PN is allocated to one reference of pCell corresponding to the above- PN information is set (S640).
7 is a diagram illustrating a conventional pCell database for a handoff border region and a pCell database according to an embodiment of the present invention.
When the subscriber station is located in the handoff boundary region of the A base station PN2, the B base station PN4, and the C base station PN7, if the PN of the A base station is included as the reference PN in the PPM data collected by the subscriber terminal, 7A, PN2, which is the PN of the A base station, is set as the reference PN information of the conventional pCell database.
However, in the embodiment of the present invention, among the plurality of PNs included in the PPM data, PN2 as the PN of the A base station, PN4 as the PN of the B base station, and PN7 as the PN of the C base station, Even if the reference PN of the PPM data measured by the subscriber terminal located in the handoff boundary region of the A base station, the B base station and the C base station becomes PN4 or PN7, the base PN information of the pCell database for the handoff boundary region . ≪ / RTI >
Accordingly, the
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 spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.
INDUSTRIAL APPLICABILITY As described above, the present invention is applied to a location-based service field, in which a pCell location server transmits not only a reference PN of PPM data to a pCell database for a handoff boundary region between a plurality of active PNs, Since the neighboring PN is stored as the reference PN, it is a very useful invention for generating the effect of accurately positioning the pCell of the mobile communication terminal located in the handoff boundary region.
1 is a flowchart showing a network-based positioning method using a pCell database,
2 is a flow chart illustrating a conventional method for building a pCell database,
3 is a diagram exemplifying the division of a location measurement service area by pCell,
4 is a block diagram schematically showing a configuration of a pCell positioning system according to an embodiment of the present invention.
5 is a block diagram schematically showing an internal configuration of a pCell positioning server according to an embodiment of the present invention;
6 is a flowchart illustrating a process of building a pCell database in a pCell positioning server according to an embodiment of the present invention.
7 is an exemplary diagram illustrating a conventional pCell database for a handoff border region and a pCell database according to an embodiment of the present invention.
Description of the Related Art
410: Position calculation server 420: pCell positioning server
510: communication unit 520:
530: Data storage unit
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KR101440834B1 (en) | 2010-07-05 | 2014-09-18 | 에스케이텔레콤 주식회사 | Method And Apparatus for Updating Database for Wireless LAN Based Positioning |
KR101495503B1 (en) * | 2010-09-20 | 2015-02-26 | 에스케이텔레콤 주식회사 | Method for Estimating Azimuth, Apparatus And Computer-Readable Recording Medium with Program Therefor |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20050033790A (en) * | 2003-10-07 | 2005-04-13 | (주)네오링크 | Method of improving accuracy of position measurement in the bts based environment comprising a relay |
KR100573203B1 (en) | 2004-03-17 | 2006-04-24 | 에스케이 텔레콤주식회사 | Method and System for Determining Position of Terminal by Using Location Detector in GPS Satellite-Invisible Area |
KR100590987B1 (en) | 2004-06-18 | 2006-06-19 | 에스케이 텔레콤주식회사 | Method and System for Determining Position of Mobile Communication Terminal and Measuring Communication Quality of Determined Position by Using A-GPS Mode |
KR20080045533A (en) * | 2006-11-20 | 2008-05-23 | 에스케이 텔레콤주식회사 | Method and system for providing location information to mobile communication terminal on boundary area of mobile switching center |
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Publication number | Priority date | Publication date | Assignee | Title |
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KR20050033790A (en) * | 2003-10-07 | 2005-04-13 | (주)네오링크 | Method of improving accuracy of position measurement in the bts based environment comprising a relay |
KR100573203B1 (en) | 2004-03-17 | 2006-04-24 | 에스케이 텔레콤주식회사 | Method and System for Determining Position of Terminal by Using Location Detector in GPS Satellite-Invisible Area |
KR100590987B1 (en) | 2004-06-18 | 2006-06-19 | 에스케이 텔레콤주식회사 | Method and System for Determining Position of Mobile Communication Terminal and Measuring Communication Quality of Determined Position by Using A-GPS Mode |
KR20080045533A (en) * | 2006-11-20 | 2008-05-23 | 에스케이 텔레콤주식회사 | Method and system for providing location information to mobile communication terminal on boundary area of mobile switching center |
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