JP6368161B2 - Information processing system and information processing method - Google Patents

Description

  The present invention relates to an information processing system and an information processing method for managing radio wave characteristics of a communication terminal.

  Information indicating the relationship between radio wave quality information (including radio wave reception intensity) received by a communication terminal from a predetermined base station and the position at which the radio wave is received as a technology for positioning a communication terminal (prior distribution) Data) is previously stored in a database, and pattern matching positioning is known in which the position of the communication terminal is derived from the quality information of the radio waves received by the communication terminal using the prior distribution data (for example, Patent Document 1). reference).

  Pattern matching positioning can reduce battery consumption compared to positioning by GNSS (Global Navigation Satellite System) or WiFi positioning, and it does not depend on OS (Operating System) or terminal settings, for example, roaming overseas. It is a positioning method that is expected to be used more widely in the future because it can be used in an out environment.

JP-A-7-231473

  However, if the base station is a RRH-equipped station that includes a master station and a slave station connected to the master station and installed at a different location, the radio wave received by the communication terminal Is actually transmitted from the slave station, but the position of the communication terminal is derived as the radio wave from the master station, so that the position greatly separated from the actual position of the communication terminal There is a risk of being. In the future, for example, the development of indoor environment maps is expected to increase the need for indoor positioning services using the RRH-equipped station, improving pattern matching positioning accuracy in the RRH-equipped base station configuration. It is demanded to make it.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an information processing system and an information processing method for providing pattern data that enables more precise pattern matching positioning in a RRH-equipped base station configuration. And

  The information processing system according to the present invention includes base station identification information for identifying a base station that communicates with a communication terminal, position information indicating the position of the communication terminal, and quality of radio waves received by the communication terminal at the position related to the position information. An acquisition means for acquiring information, a generation means for generating pattern data associated with base station identification information, position information, and quality information acquired by the acquisition means, and pattern data generated by the generation means is stored. Storage means, and the base station identification information includes information for identifying a master station in the RRH-equipped base station configuration, and information for identifying a slave station connected to the master station and installed at a location different from the master station It is included.

  An information processing method according to the present invention is an information processing method performed by an information processing system that generates pattern data, and includes base station identification information that identifies a base station that communicates with a communication terminal, and position information that indicates the position of the communication terminal And the acquisition step which acquires the quality information of the radio wave received by the communication terminal at the position related to the position information, and the pattern data in which the base station identification information, the position information and the quality information acquired in the acquisition step are associated with each other And a storage step for storing the pattern data generated in the generation step, the base station identification information includes information for identifying the master station in the RRH-equipped base station configuration, and connection with the master station And information for identifying a slave station installed in a different location from the master station.

  In the information processing system or the information processing method according to the present invention, pattern data in which base station identification information, position information, and quality information are associated is generated and stored. Here, the base station identification information includes information for identifying the slave station. In this case, for each piece of information for identifying a slave station, pattern data associated with position information and quality information is generated and stored. By deriving the position of the communication terminal using such pattern data, it is possible to obtain an appropriate positioning result according to the slave station that communicates with the communication terminal. That is, it is possible to provide pattern data that enables higher-precision pattern matching positioning as compared with the prior art.

  The information processing system according to the present invention includes a quality information of a radio wave received by a location acquisition target communication terminal acquired in response to a location acquisition request, and a base station that communicates with the location acquisition target communication terminal. You may further provide the position derivation | leading-out means which derives | leads-out the positional information which shows the position of the communication terminal of a position acquisition object based on the base station identification information to identify and the pattern data which a memory | storage means memorize | stores. By deriving the position information of the communication terminal by pattern matching positioning based on the quality information, the base station identification information, and the pattern data, it is possible to reliably derive the position information using the pattern data of the present invention.

  In the information processing system according to the present invention, the acquisition unit may acquire information on at least one of radio wave reception intensity, propagation loss, and propagation time as quality information. Thereby, appropriate information can be acquired as radio wave quality information.

  In the information processing system according to the present invention, the generation means includes the position information and base station identification information of the latest pattern data generated, the position information of the pattern data stored in the storage means before the generation of the latest pattern data, and When the relationship with the base station identification information satisfies a predetermined condition, the quality information of the latest pattern data may be used as the quality information of the pattern data newly stored by the storage unit. Thereby, even when the accommodation of the base station is changed, the quality information of the pattern data can be updated appropriately.

  In the information processing system according to the present invention, the generation means includes the position information and base station identification information of the latest pattern data generated, the position information of the pattern data stored in the storage means before the generation of the latest pattern data, and When the relationship with the base station identification information satisfies a predetermined condition, a value obtained by averaging the quality information of the pattern data stored in the storage means before the generation of the latest pattern data and the quality information of the latest pattern data May be the quality information of the pattern data newly stored by the storage means. Thereby, the average value of the quality information of the plurality of pattern data is used as the quality information of the pattern data stored in the storage unit, and the quality information of the pattern data can be updated appropriately.

  The information processing system according to the present invention may further include a determining unit that determines whether or not to acquire the quality information according to the time when the positioning is performed in the communication terminal. When the timing at which the position of the communication terminal is measured and the timing at which quality information is acquired deviate significantly, the position indicated in the position information and the position from which quality information is acquired are deviated from each other. Where there is a possibility that the information does not correspond appropriately, appropriate pattern data can be generated by determining whether or not to acquire quality information in consideration of the time at which positioning is performed.

  According to the present invention, it is possible to provide pattern data that enables more precise pattern matching positioning in a light projecting station configuration.

It is the schematic which shows the structure of the position positioning system which concerns on this embodiment. It is a figure which shows the hardware constitutions of each node contained in the position positioning system of this embodiment. It is a block diagram which shows the function of the pattern matching server which concerns on this embodiment. It is a table | surface which shows the pattern data table which concerns on this embodiment. It is a flowchart which shows the pattern data update process by the pattern matching server which concerns on this embodiment. It is a flowchart which shows the quality information acquisition determination process by SLP which concerns on this embodiment. It is a sequence diagram of pattern data update processing according to the present embodiment. It is a sequence diagram of the pattern matching positioning process which concerns on this embodiment. It is a figure which shows the position positioning image in a comparative example. It is the schematic which shows the structure of the position positioning system which concerns on a modification.

  Embodiments according to the present invention will be described below with reference to the drawings. Where possible, the same parts are denoted by the same reference numerals, and redundant description is omitted.

  The position positioning system according to the present embodiment includes a communication terminal position information, radio wave quality information, and a communication terminal indicated by a positioning result of a positioning method with higher accuracy than pattern matching positioning, such as a GNSS (Global Navigation Satellite System) positioning result. The pattern data (prior distribution data) associated with the base station identification information for identifying the base station that communicates with the base station is generated and updated in advance, and the position information of the communication terminal is obtained by pattern matching positioning using the pattern data. Is derived. That is, the position positioning system according to the present embodiment is large and performs two processes: a pattern data update process (details will be described later) and a pattern matching positioning process (details will be described later). The pattern data update process may be executed repeatedly at predetermined intervals, for example, or may be executed every time positioning is performed. The pattern matching positioning process is performed in response to a positioning request from a content server that provides an application to a communication terminal, for example.

  FIG. 1 is a schematic diagram illustrating a configuration of a position positioning system according to the present embodiment. As shown in FIG. 1, the positioning system 1 (information processing system) is a system that performs positioning in a 3G network, and includes a communication terminal 10, an RNC (Radio Network Controller) 11, an SGSN (Serving General packet radio Service support). Node) 12, GMLC (Gateway Mobile Location Center) 13, HSS (Home Subscriber Server) 14, SLP (SUPL Location Platform) 15, and pattern matching server 16.

  FIG. 2 is a diagram illustrating a hardware configuration of each node included in the position positioning system of the present embodiment. That is, the RNC 11, SGSN 12, GMLC 13, HSS 14, SLP 15, and pattern matching server 16 shown in FIG. 1 physically each have one or more CPUs 111, a RAM 112 as a main storage device, and a RAM 112, as shown in FIG. A computer system including a ROM 113, an input device 114 such as a keyboard and mouse as input devices, an output device 115 such as a display, a communication module 116 as a data transmission / reception device such as a network card, an auxiliary storage device 117 such as a semiconductor memory, etc. Has been.

  The function of each node is to read one or a plurality of predetermined computer software on the hardware such as the CPU 111 and the RAM 112 shown in FIG. 2 and thereby control the input device 114, the output device 115, and the communication module under the control of the CPU 111. This is realized by operating 116 and reading and writing data in the RAM 112 and the auxiliary storage device 117.

  The communication terminal 10 is a mobile communication terminal that can communicate by being in a mobile communication network, and is, for example, a mobile phone or a tablet PC. The communication terminal 10 transmits a location registration request including a telephone number to a BTS (Base Transceiver Station) 31 that is a radio base station provided corresponding to the RNC 11. By performing the location registration, the communication terminal 10 can communicate. Information transmitted from the communication terminal 10 is transmitted to the HSS 14 via the RNC 11 or the like, and is registered in the HSS 14.

  Here, in the present embodiment, the RRH-equipped base station configuration 30 has a BTS 31 as a base station as a master station and MOFs 32 and 33 connected to the BTS 31 via optical fibers as slave stations. The RRH-equipped base station configuration 30 is a base station configuration adopted indoors such as in a subway, for example, and includes a BTS 31 having digital signal processing, maintenance and monitoring functions, and MOFs 32 and 33 having antennas, modulation / demodulation functions, and the like. Composed. With this configuration, it is possible to install a plurality of MOFs 32 and 33 at a location different from the BTS 31 that is the master station. In the present embodiment, the communication terminal 10 realizes communication with the BTS 31 described above by communicating with the MOF 32 or the MOF 33.

  The communication terminal 10 has a function of performing GNSS positioning using a Global Navigation Satellite System (GNSS) as a function related to pattern data update processing. More specifically, for example, the communication terminal 10 acquires position information indicating the position of the communication terminal 10 by performing UE-B (UE-Based) positioning in which the communication terminal 10 itself performs GNSS positioning calculation. It has a function. Note that the location information of the communication terminal 10 may be acquired by UE-A (UE-Assisted) positioning in which GNSS positioning calculation is performed by the positioning server. In addition, the positioning method is not limited to GNSS positioning, and may be any positioning method that is more accurate than pattern matching positioning, such as WiFi positioning. When the base station configuration is the RRH-equipped base station configuration 30 and the base station configuration is outdoor, the GNSS positioning calculation is likely to fail compared to the case where the base station configuration is outdoor. Even if there is WiFi positioning, positioning can be succeeded with high probability. Even in the case of GNSS positioning, the indoor positioning success probability can be increased by a technique such as IMES (Indoor MEssaging System). Hereinafter, an example of performing GNSS positioning will be described. When the communication terminal 10 acquires the positioning result, the SLP 15 sends a position positioning result notification including the telephone number of the communication terminal 10, position information indicating the latitude / longitude related to the positioning result, and the time (positioning time) at which the positioning was performed. Send to.

  In addition, when the communication terminal 10 receives the quality information measurement request transmitted from the SLP 15 in response to the position measurement result notification, the communication terminal 10 measures the quality information of radio waves transmitted to and received from the RRH-equipped base station configuration 30. have. More specifically, the communication terminal 10 measures the quality information of radio waves transmitted / received between the communication station 10 and the slave station (MOF 32 or MOF 33) that actually transmits / receives radio waves in the RRH-equipped base station configuration 30. To do. The radio wave quality information is the radio wave reception intensity (for example, Ec / N0 (Enegy per chip divided by the power density) or RSCP (Received Signal Code Power)), propagation loss (Path loss), and propagation time. (PRACH-PD or RTT) information. The quality measurement is also performed in the pattern matching positioning process (details will be described later).

  The radio wave quality information acquired by the communication is acquired by the RNC 11 via the BTS 31. The BTS 31 transmits base station identification information to the RNC 11. The base station identification information is information for identifying a base station that communicates with the communication terminal 10. The base station identification information includes a base station number for identifying the BTS 31 and information indicating whether the BTS 31 is a BTS included in the RRH-equipped base station configuration 30. When the base station has the RRH-equipped base station configuration 30, the base station identification information includes a slave station number that is information for identifying a slave station (MOF32 or MOF33) that communicates with the communication terminal 10. Yes. That is, for example, when the quality information of radio waves transmitted and received between the communication terminal 10 and the MOF 33 is measured, the base station identification information includes the base station number for identifying the BTS 31 and the base station in the RRH-equipped base station configuration 30. Information to that effect and a slave station number identifying the MOF 33 are included.

  The RNC 11 is a communication control device having a radio access control function. The RNC 11 is provided corresponding to the BTS 31 and performs processing related to the wireless communication of the communication terminal 10 located in the 3G coverage area formed by the BTS 31. Specifically, the RNC 11 performs line connection processing, handover processing, and the like of the communication terminal 10.

  In addition, the RNC 11 has a function of performing quality measurement and base station positioning related to the communication terminal 10 in response to a quality information measurement request from the SLP 15 via the GMLC 13 as a function related to the pattern data update process. The RNC 11 controls the BTS 31 to transmit a radio wave to the communication terminal 10 and receives a call connection request signal (RACH signal) that is a signal that the communication terminal 10 responds to the radio wave. The RNC 11 acquires the quality information of the radio wave received by the communication terminal 10 based on the RACH signal. That is, the RNC 11 acquires the reception strength of the RACH signal as the reception strength of the radio wave, acquires the attenuation degree of the RACH signal as a radio wave propagation loss, transmits the radio wave to the communication terminal 10, and then receives the response as a RACH signal. The time until the return is acquired as the radio wave propagation time. Based on the radio wave quality information acquired based on the RACH signal and the coordinates (latitude and longitude) of the BTS 31, the RNC 11 performs, for example, base station positioning using a conventionally known radio wave propagation delay time to determine the communication terminal 10. Obtain location information (location information by base station positioning). The RNC 11 sends a quality positioning response including the position information (latitude / longitude) acquired by the base station positioning, the quality information of the radio wave received by the communication terminal 10, and the base station identification information described above via the GMLC 13. Transmit to SLP15.

  The SGSN 12 is a device that sets a session for packet communication and controls packet switching. The SGSN 12 has a GGSN (Gateway GPRS Support Node) function in the same apparatus for performing user authentication during packet communication.

  The GMLC 13 is a positioning server that receives a quality information measurement request from the SLP 15 and transmits a quality information measurement request to the RNC 11 in the pattern data update process. Further, the GMLC 13 receives the quality positioning response from the RNC 11 and transmits the quality positioning response to the SLP 15.

  In the pattern matching positioning process, the GMLC 13 receives a base station positioning service activation request from a predetermined content server (not shown) that provides an application to the communication terminal 10 and transmits a quality information measurement request to the RNC 11. Further, the GMLC 13 receives a quality positioning response from the RNC 11 and transmits a pattern matching calculation request to the pattern matching server 16. Similar to the quality positioning response, the pattern matching calculation request includes position information (latitude / longitude) acquired by base station positioning, radio wave quality information received by the communication terminal 10, and base station identification information. ing. The GMLC 13 receives a pattern matching calculation result response from the pattern matching server 16. The pattern matching calculation result response includes position information (latitude / longitude) derived by the pattern matching server 16 performing pattern matching positioning. The GMLC 13 transmits a base station positioning service activation response to the above-described content server (not shown). The base station positioning service activation response includes position information derived by pattern matching positioning.

  In the pattern data update process, the SLP 15 receives a position positioning result notification including the telephone number of the communication terminal 10, position information indicating the latitude / longitude related to the positioning result, and the time (positioning time) at which the positioning was performed. The SLP 15 is a determination unit that determines whether or not to acquire quality information according to the time (positioning time) when the communication terminal performs positioning. Specifically, the SLP 15 compares the time at which the above determination is made with the positioning time after receiving the position positioning result notification, and determines that the quality information is not acquired if the time difference is larger than a predetermined value. . In this case, the SLP 15 does not transmit a quality information measurement request. On the other hand, when the time difference is equal to or less than the predetermined value, it is determined to acquire the quality information. In this case, the SLP 15 transmits a quality information measurement request to the GMLC 13. The predetermined value is a value that does not greatly deviate from the position related to the positioning result acquired in the communication terminal 10 and the position from which the quality information is acquired, and is, for example, about several seconds to several tens of seconds. The predetermined value may be changed according to the acceleration (movement speed) of the communication terminal 10. For example, when the moving speed of the communication terminal 10 is fast at the position positioning time, the predetermined value may be several seconds, and when the moving speed is slow, the predetermined value may be several tens of seconds.

  Further, when the SLP 15 receives the quality positioning response from the GMLC 13, the SLP 15 includes the quality information and the base station identification information included in the quality positioning response and the position information (latitude / longitude) included in the position positioning result notification. A pattern data update request is transmitted to the pattern matching server 16.

  The pattern matching server 16 is a positioning server that performs pattern data update processing and performs pattern matching positioning based on the pattern data. FIG. 3 is a block diagram showing functions of the pattern matching server according to the present embodiment. As shown in FIG. 3, the pattern matching server 16 includes an information acquisition unit 161, a generation unit 162, a storage unit 163, and a pattern matching positioning unit 164. The information acquisition unit 161, the generation unit 162, and the storage unit 163 are functions related to generation of the pattern data described above. The storage unit 163 and the pattern matching positioning unit 164 are functions related to the above-described pattern matching positioning.

  The information acquisition unit 161 includes base station identification information for identifying a base station that communicates with the communication terminal 10, position information indicating the position of the communication terminal 10, and quality of radio waves received by the communication terminal 10 at the position related to the position information. It is an acquisition means for acquiring information. The information acquisition unit 161 acquires radio wave reception intensity, propagation loss, and propagation time as quality information of radio waves received by the communication terminal 10. The information acquisition unit 161 acquires base station identification information, position information, and quality information based on information included in the pattern data update request transmitted from the SLP 15 to the pattern matching server 16. The information acquisition unit 161 outputs the acquired various types of information to the generation unit 162.

  The generation unit 162 is a generation unit that generates pattern data that is acquired by the information acquisition unit 161 and is associated with base station identification information, position information, and quality information. Here, the position information of the communication terminal 10 acquired by the information acquisition unit 161 is indicated by latitude and longitude. The generation unit 162 converts the latitude / longitude into predetermined predetermined area (mesh) units. For example, the generation unit 162 stores a latitude / longitude-mesh correspondence table in advance, and refers to the correspondence table, so that the latitude / longitude input to the information acquisition unit 161 is converted into position information in mesh units. Convert to After the conversion, the generation unit 162 generates pattern data in which the base station identification information, the mesh unit position information of the communication terminal 10, and the quality information are associated with each other. Note that the position information in units of meshes is indicated by, for example, a mesh number that identifies the mesh.

  As described above, the base station identification information includes a base station number for identifying the BTS 31 and information indicating whether the BTS 31 is a BTS included in the RRH-equipped base station configuration 30. When the base station has the RRH-equipped base station configuration 30, the base station identification information includes a slave station number that is information for identifying a slave station (MOF32 or MOF33) that communicates with the communication terminal 10. Yes. When the base station has the RRH-equipped base station configuration 30, the generation unit 162 generates pattern data in which the base station number and the slave station number, the mesh number, and the quality information are associated among the base station identification information. To do.

  The generation unit 162 refers to the storage unit 163 after generating the pattern data, stores the position information and base station identification information of the latest pattern data generated, and the storage unit 163 before the generation of the latest pattern data. It is determined whether or not the relationship between the position information of the existing pattern data (pattern data already stored) and the base station identification type satisfies a predetermined condition. Satisfying the predetermined condition is, for example, that the position information (for example, mesh number) in units of mesh and the base station identification type (base station number and slave station number) match. Note that the term “match” refers not only to the case of a complete match, but also to the case where, for example, the position information in mesh units indicates a close position or the case where the base station identification type indicates an adjacent slave station number. It may be included.

  If the relationship between the position information and base station identification type of the latest pattern data and the position information and base station identification type of the pattern data that has already been stored satisfies a predetermined condition (for example, match) If it is, the latest pattern data quality information is used as the pattern data quality information newly stored in the storage unit 163. In this case, the storage unit 163 rewrites (updates) the quality information of the already stored pattern data with the quality information of the latest pattern data.

  The generation unit 162 also determines that the relationship between the position information and base station identification type of the latest pattern data and the position information and base station identification type of the pattern data already stored satisfies a predetermined condition (for example, one In the case where the storage unit 163 newly stores, the storage unit 163 may use a value obtained by averaging the quality information of the pattern data already stored and the quality information of the latest pattern data. .

  The storage unit 163 is a storage unit that stores the pattern data generated by the generation unit 162. FIG. 4 is a table showing a pattern data table according to the present embodiment, and shows a pattern data table when the base station has a RRH-equipped base station configuration. The storage unit 163 stores a pattern data table shown in FIG. The pattern data table stores pattern data in which a base station number that is base station identification information, a slave station number that is base station identification information, a mesh number that is position information, and radio wave quality information are associated with each other. ing. In FIG. 4, only one mesh number is associated with the same base station number and slave station number. However, actually, the base station number and the slave station number are the same and the mesh number is the same. A plurality of pattern data having different values are stored. Specifically, the radio wave quality information includes radio wave reception intensity, propagation loss, and propagation time. The storage unit 163 may store, for example, only one pattern data for each combination of mesh number and slave station number, or a plurality of pattern data for the same combination of mesh number and slave station number. May be stored.

  The pattern matching positioning unit 164 includes, in the pattern matching calculation request (position acquisition request) received from the GMLC 13, the radio wave quality information received by the position acquisition target communication terminal 10 and the base station identification information, A position deriving unit that derives position information indicating the position of the communication terminal 10 based on the pattern data stored in the storage unit 163. That is, for example, it is assumed that the pattern data table shown in FIG. 4 is stored in the storage unit 163. In this case, the pattern matching positioning unit 164 refers to the pattern data table in the storage unit 163, and the radio wave quality information (reception strength, propagation loss, propagation time) included in the pattern matching calculation request and the base station identification Pattern data that matches (may include approximation) information (base station number, slave station number) is extracted, and the mesh indicated by the mesh number of the extracted pattern data is specified as position information of the communication terminal 10 . The pattern matching positioning unit 164 transmits a pattern matching calculation result response including the specified position information to the GMLC 13.

  Next, pattern data update processing by the pattern matching server will be described with reference to FIG. FIG. 5 is a flowchart showing pattern data update processing by the pattern matching server according to the present embodiment.

  As shown in FIG. 5, first, the information acquisition unit 161 uses base station identification information for identifying a base station that communicates with the communication terminal 10, position information indicating the position of the communication terminal 10, and a position related to the position information. The quality information of the radio wave received by the communication terminal 10 is acquired (step S11). Subsequently, the generation unit 162 converts the latitude / longitude of the position information into predetermined predetermined area (mesh) units, and converts it into mesh points according to the latitude / longitude (step S13).

  Subsequently, the generation unit 162 determines whether the BTS 31 is the RRH-equipped base station configuration 30 based on information indicating whether the BTS 31 is a BTS included in the RRH-equipped base station configuration 30. It is determined whether or not (whether it is an indoor station) (step S15). If it is determined in S15 that the RRH-equipped base station configuration 30 is satisfied, the generation unit 162 acquires the base station number and the slave station number included in the base station identification information (step S17), and according to the latitude and longitude The quality information of the base station number and the slave station number at the mesh point is updated (step S19). On the other hand, when it is determined in S15 that the base station configuration is not the RRH-equipped base station configuration 30, the generation unit 162 acquires the base station number at the mesh point corresponding to the latitude / longitude (step S18), and The quality information of the base station number at the mesh point is updated (step S19). In addition, the process of S15 does not necessarily need to be performed, and the quality information may be updated according to the base station type information.

  Next, quality information acquisition determination processing by SLP will be described with reference to FIG. FIG. 6 is a flowchart showing quality information acquisition determination processing by SLP according to the present embodiment.

  As shown in FIG. 6, first, a positioning result notification is received by the SLP 15 (step S111). Subsequently, after receiving the position positioning result notification by the SLP 15, the time when determining whether or not to acquire the quality information (current time) is compared with the time when the positioning is performed (positioning time time). It is then determined whether or not the time difference is within a predetermined value (step S112). If the time difference is not within the predetermined value in S112, the process ends and no quality information is acquired. On the other hand, when the time difference is within the predetermined value in S112, a quality information measurement request is transmitted to the GMLC 13 by the SLP 15 (step S113). Then, the SLP 15 receives a quality positioning response including quality information measured between the communication terminal 10 and the RNC 11 from the GMLC 13 (step S114).

  Next, pattern data update processing by the position positioning system 1 will be described with reference to FIG. FIG. 7 is a sequence diagram of pattern data update processing according to the present embodiment.

  As shown in FIG. 7, first, the positioning function of the communication terminal 10 is activated (step S31), and the positioning result is acquired. Subsequently, the communication terminal 10 transmits a position positioning result notification to the SLP 15 (step S32). The position positioning result notification includes the telephone number of the communication terminal 10, position information indicating the latitude and longitude related to the positioning result, and the time (positioning time) at which the positioning was performed.

  Subsequently, the time when the position measurement result notification is received by the SLP 15 and the positioning is performed by the communication terminal 10 (positioning time) and the time (current time) when determining whether or not to acquire the quality information are obtained. A comparison (time determination) is made, and it is determined whether or not a quality information measurement request is transmitted to the GMLC 13 according to the time difference (step S33). The value of such a time difference may be changed according to the acceleration (movement speed) of the communication terminal 10. For example, the time difference value may be several seconds if the movement speed of the communication terminal 10 is fast, and the time difference value may be several tens of seconds if the movement speed is slow. In this case, in step S32, it is necessary to include information capable of calculating the acceleration (movement speed) of the communication terminal 10 in the position positioning result notification. When it is determined in S33 that the quality information measurement request is transmitted, the quality information measurement request is transmitted to the GMLC 13 by the SLP 15 (step S34). Then, the quality information measurement request is transmitted to the RNC 11 by the GMLC 13 (step S35).

  Radio wave quality is measured by transmitting and receiving radio waves between the RNC 11 and the communication terminal 10 via the BTS 31 (step S36). The RNC 11 acquires base station identification information from the BTS 31. The base station identification information includes a base station number for identifying the BTS 31 and information indicating whether the BTS 31 is a BTS included in the RRH-equipped base station configuration 30. When the base station has the RRH-equipped base station configuration 30, the base station identification information includes a slave station number that is information for identifying a slave station (MOF32 or MOF33) that communicates with the communication terminal 10. Yes.

  The RNC 11 transmits a quality positioning response to the GMLC 13 (step S37). The quality positioning response includes position information (latitude / longitude) acquired by base station positioning, radio wave quality information received by the communication terminal 10, and the above-described base station identification information. Then, a quality positioning response is transmitted from the GMLC 13 to the SLP 15 (step S38).

  Subsequently, the SLP 15 sends a pattern data update request including quality information and base station identification information included in the quality positioning response, and position information (latitude / longitude) included in the position positioning result notification to the pattern matching server. 16 (step S39). Then, the information acquisition unit 161 of the pattern matching server 16 acquires the location information, radio wave quality information, and base station identification information of the communication terminal 10 based on the information included in the pattern data update request, and the generation unit 162 Pattern data in which these pieces of information are associated is generated, and the pattern data in the storage unit 163 is updated (step S40).

  Next, with reference to FIG. 8, the pattern matching positioning process by the position positioning system 1 according to the present embodiment will be described. FIG. 8 is a sequence diagram of pattern matching positioning processing according to the present embodiment. As shown in FIG. 8, the pattern matching positioning process is started when the GMLC 13 receives a base station positioning service activation request from a predetermined content server (not shown) that provides an application to the communication terminal 10. (Step S51). In the following, description of the processing related to the HSS 14 is omitted. Moreover, although the process between GMLC13 and RNC11 may be performed via SGSN12 (GGSN is included), description of SGSN12 which concerns on the said process is abbreviate | omitted.

  Subsequently, the GMLC 13 transmits a quality information measurement request to the RNC 11 (step S52). Then, radio wave quality is measured by transmitting and receiving radio waves between the RNC 11 and the communication terminal 10 via the BTS 31 (step S53). The RNC 11 acquires base station identification information from the BTS 31. The base station identification information includes a base station number for identifying the BTS 31 and information indicating whether the BTS 31 is a BTS included in the RRH-equipped base station configuration 30. When the base station has the RRH-equipped base station configuration 30, the base station identification information includes a slave station number that is information for identifying a slave station (MOF32 or MOF33) that communicates with the communication terminal 10. Yes.

  The RNC 11 transmits a quality positioning response to the GMLC 13 (step S54). The quality positioning response includes position information (latitude / longitude) acquired by base station positioning, radio wave quality information received by the communication terminal 10, and the above-described base station identification information. Subsequently, the GMLC 13 transmits a pattern matching calculation request to the pattern matching server 16 (step S55). Similar to the quality positioning response, the pattern matching calculation request includes position information (latitude / longitude) acquired by base station positioning, radio wave quality information received by the communication terminal 10, and base station identification information. ing.

  Then, by the pattern matching positioning unit 164 of the pattern matching server 16, the quality information of the radio wave received by the communication terminal 10 that is the position acquisition target included in the pattern matching calculation request (position acquisition request), and the base station identification Based on the information and the pattern data stored in the storage unit 163, position information indicating the position of the communication terminal 10 is derived (step S56).

  Subsequently, the pattern matching positioning unit 164 of the pattern matching server 16 transmits a pattern matching calculation result response including the specified position information to the GMLC 13 (step S57). Then, the GMLC 13 transmits a base station positioning service activation response including the position information derived by the pattern matching positioning to the above-described content server (not shown) (step S58).

  Next, the effect of the pattern matching server 16 according to the present embodiment will be described.

  As a technique for positioning a communication terminal, information (pattern data) indicating the relationship between radio wave quality information (including radio wave reception intensity) received by a communication terminal from a predetermined base station and the position where the radio wave is received. ) Is previously stored in a database, and pattern matching positioning is performed to derive the position of the communication terminal from the quality information of the radio wave received by the communication terminal using the pattern data. In such pattern matching positioning, the accuracy of pattern data is important.

  Conventionally, when the base station is a RRH-equipped station including a master station and a slave station connected to the master station and installed at a different location, the radio wave received by the communication terminal Is actually transmitted from the slave station, but the position of the communication terminal is derived as the radio wave from the master station, so that the position greatly separated from the actual position of the communication terminal There was a risk of being. For example, as in the comparative example shown in FIG. 9, the base station is an RRH-equipped base station configuration 130 configured in an indoor 140 such as a subway by a BTS 131 as a master station and MOFs 132 and 133 as slave stations. Even if the MOFs 132 and 133 actually transmit / receive radio waves to / from the communication terminal, it is determined that radio waves are always being transmitted / received to / from the BTS 131 (cell in communication: A). ) And the position of the communication terminal were not properly associated, and correct positioning results could not be obtained.

  In this regard, the position positioning system 1 (pattern matching server 16) according to the present embodiment generates and stores pattern data in which base station identification information, position information, and quality information are associated with each other. When the base station has a RRH-equipped base station configuration, the base station identification information includes information for identifying the slave station. In this case, pattern data associated with position information and quality information is generated and stored for each piece of information (slave station number) for identifying a slave station. By deriving the position of the communication terminal 10 using such pattern data, it is possible to obtain an appropriate positioning result according to the slave station that communicates with the communication terminal 10. That is, it is possible to provide pattern data that enables higher-precision pattern matching positioning as compared with the prior art.

  The pattern matching server 16 communicates with the quality information of the radio wave received by the location acquisition target communication terminal 10 and the location acquisition target communication terminal 10 included in the pattern matching calculation request received from the GMLC 13. A pattern matching positioning unit 164 for deriving position information indicating the position of the communication terminal 10 based on base station identification information for identifying a base station to be performed and pattern data stored in the storage unit 163 is provided. By deriving the position information of the communication terminal 10 by pattern matching positioning based on the quality information, the base station identification information, and the pattern data, it is possible to reliably derive the position information using the pattern data.

  In the pattern matching server 16, the information acquisition unit 161 acquires information on at least one of radio wave reception intensity, propagation loss, and propagation time as radio wave quality information. Thereby, appropriate information can be acquired as radio wave quality information.

  Further, in the pattern matching server 16, the generation unit 162 includes the position information and base station identification information of the latest pattern data generated and the position information of the pattern data stored in the storage unit 163 before the generation of the latest pattern data. If the relationship with the base station identification information satisfies a predetermined condition (for example, matches), the latest pattern data quality information is used as the pattern data quality information newly stored in the storage unit 163. Thereby, for example, even when the accommodation of the base station is changed, the quality information of the pattern data can be updated appropriately.

  Further, in the pattern matching server 16, the generation unit 162 includes the position information and base station identification information of the latest pattern data generated and the position information of the pattern data stored in the storage unit 163 before the generation of the latest pattern data. And the relationship between the base station identification information and the base station identification information satisfy a predetermined condition (for example, when they match), the pattern data quality information and the latest pattern stored in the storage unit 163 before generation of the latest pattern data. The value obtained by averaging the data quality information is used as the pattern data quality information newly stored in the storage unit 163. Thereby, the average value of the quality information of the plurality of pattern data is used as the quality information of the pattern data stored in the storage unit 163, and the quality information of the pattern data can be updated appropriately.

  Further, the SLP 15 determines whether or not to acquire quality information according to the time (positioning time) when the communication terminal performs positioning. Specifically, the SLP 15 compares the time when performing the above determination when the position positioning result notification is received with the positioning time, and determines that the quality information is not acquired if the time difference is larger than a predetermined value. In this case, the SLP 15 does not transmit a quality information measurement request. On the other hand, when the time difference is equal to or less than the predetermined value, it is determined to acquire the quality information. In this case, the SLP 15 transmits a quality information measurement request to the GMLC 13. When the timing at which the position measurement of the communication terminal 10 is performed and the timing at which the quality information is acquired are greatly shifted, the position indicated in the position information and the position at which the quality information is acquired are shifted from each other. Where there is a possibility that the quality information is not properly associated, appropriate pattern data can be generated by determining whether or not the quality information needs to be acquired in consideration of the time at which the positioning is performed.

  As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to embodiment mentioned above. That is, the position positioning system 1 that performs position positioning in the 3G network has been described as the position positioning system. However, the position positioning system 1 is not limited to this. For example, as illustrated in FIG. The position positioning system 1A to be performed may be used. The positioning system 1A includes nodes related to positioning in the LTE network. As nodes different from the positioning system 1, an eNB (evolved NodeB) 201, an MME (Mobility Management Entity) 202, and an eSMLC (EVOLVED Serving) are provided. Mobile Lication Center) 203. In the RRH-equipped base station configuration shown in FIG. 10, MOFs 132 and 133 that are slave stations are provided with the eNB 201 as a master station.

  Moreover, although both the process which produces | generates pattern data and the process which performs pattern matching positioning were demonstrated as the pattern matching server 16 which is one information processing apparatus, these processes were processed by two or more information processing apparatuses. It may be performed in a shared manner.

  Further, the radio wave quality information is described as using radio wave reception intensity, propagation loss, and propagation time, but at least one of these may be used. In addition, information other than the information described above may be acquired as radio wave quality information as long as the position information of the communication terminal can be specified.

DESCRIPTION OF SYMBOLS 1,1A ... Positioning system, 10 ... Communication terminal, 16 ... Pattern matching server, 15 ... SLP, 30, 130 ... RRH-equipped base station configuration, 31 ... BTS, 32, 33, 132, 133 ... MOF, 161 ... Information Acquiring unit, 162 ... generating unit, 163 ... storage unit, 164 ... pattern matching positioning unit.

Claims (6)

Acquisition for acquiring base station identification information for identifying a base station that communicates with a communication terminal, position information indicating the position of the communication terminal, and quality information of radio waves received by the communication terminal at the position related to the position information Means,
Generating means for generating pattern data associated with the base station identification information, the position information, and the quality information acquired by the acquiring means;
Storage means for storing pattern data generated by the generation means;
Determining means for determining whether to acquire the quality information according to a positioning time that is a time at which positioning is performed in the communication terminal ;
The base station identification information includes information for identifying a master station in the RRH-equipped base station configuration, and information for identifying a slave station connected to the master station and installed at a different location from the master station And
The determining means includes
If the time difference between the time when performing the determination after receiving the positioning result notification including the positioning time and the positioning time is larger than a predetermined value, it is determined not to acquire the quality information,
An information processing system that determines to acquire the quality information when the time difference is equal to or less than the predetermined value .   The quality information of the radio wave received by the location acquisition target communication terminal acquired in response to the location acquisition request, and the base station identification information for identifying the base station that communicates with the location acquisition target communication terminal; The information processing system according to claim 1, further comprising a position deriving unit that derives position information indicating a position of the communication terminal to be acquired based on the pattern data stored in the storage unit.   The information processing system according to claim 1, wherein the acquisition unit acquires information relating to at least one of radio wave reception intensity, propagation loss, and propagation time as the quality information.   The generation means includes position information and base station identification information of the latest pattern data generated, and position information and base station identification information of the pattern data stored in the storage means before the generation of the latest pattern data. The information processing according to any one of claims 1 to 3, wherein, when the relationship satisfies a predetermined condition, the quality information of the latest pattern data is used as the quality information of the pattern data newly stored by the storage unit. system.   The generation means includes position information and base station identification information of the latest pattern data generated, and position information and base station identification information of the pattern data stored in the storage means before the generation of the latest pattern data. When the relationship satisfies a predetermined condition, a value obtained by averaging the quality information of the pattern data stored in the storage unit from the generation of the latest pattern data and the quality information of the latest pattern data, The information processing system according to any one of claims 1 to 4, wherein the quality information of the pattern data newly stored by the storage means is used. An information processing method performed by an information processing system that generates pattern data,
Acquisition for acquiring base station identification information for identifying a base station that communicates with a communication terminal, position information indicating the position of the communication terminal, and quality information of radio waves received by the communication terminal at the position related to the position information Steps,
A generation step of generating pattern data associated with the base station identification information, the position information, and the quality information acquired in the acquisition step;
A storage step for storing the pattern data generated in the generation step;
Determining whether to acquire the quality information according to a positioning time that is a time at which positioning is performed in the communication terminal, and
The base station identification information includes information for identifying a master station in the RRH-equipped base station configuration, and information for identifying a slave station connected to the master station and installed at a different location from the master station And
In the determination step,
If the time difference between the time when performing the determination after receiving the positioning result notification including the positioning time and the positioning time is larger than a predetermined value, it is determined not to acquire the quality information,
An information processing method for determining to acquire the quality information when the time difference is equal to or less than the predetermined value .

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