JP2010127843A - Device, method, and program for determining whether to be indoors or outdoors, and system, method, and program for positioning - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly determine whether the position of a receiver is indoors or outdoors. <P>SOLUTION: The device 30 for determining whether to be indoors or outdoors includes: a DB 31 for decision; a receiving unit 32 for receiving measurement report information (MR) comprising discriminative information for radio signal sources of received signals from the receiver being an object of decision; an identification unit 33 for identifying the number N of the radio signal sources of the received signals by the report information MR; a possibility decision unit 34 for determining whether the number N of the radio signal sources is not smaller than the smallest number M of radio signal sources necessary for determining whether to be indoors or outdoors on the basis of a first method for determining whether to be indoors or outdoors; a first decision unit 35 for determining whether to be indoors or outdoors for determining whether to be indoors or outdoors on the basis of the first method for determining whether to be indoors or outdoors, in the case of N≥M; and a second decision unit 36 for determining whether to be indoors or outdoors, as a second method for determining whether to be indoors or outdoors in the case of N<M, for determining whether to be indoors or outdoors on the basis of information on indoor/outdoor features corresponding to a combination of pieces of discriminative information for radio signal sources contained in the information MR, or for determining whether to be indoors or outdoors on the basis of the number N of the radio signal sources, the smallest number value Q of radio signal sources, and the smallest number P of radio signal sources necessary for determining whether to be indoors or outdoors on the basis of the second method for determining whether to be indoors or outdoors. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an indoor / outdoor determination apparatus, an indoor / outdoor determination method, an indoor / outdoor determination program, and a positioning system, a positioning method, and a positioning program for estimating the position of a receiver.

  2. Description of the Related Art Conventionally, a technique for positioning a receiver using GPS (Global Positioning System) is known (see, for example, Non-Patent Document 1). There is also known a method called AGPS (Assisted GPS) that performs positioning using assist data indicating the position of a satellite acquired from a mobile communication network.

If the positioning by GPS is not successful (that is, if the positioning result by GPS is not fixed), the signal from the base station or the GPS satellite that performs positioning using the signal of the mobile communication network and the signal of the mobile communication network There is a case where positioning called “Hybrid” is performed in which positioning is performed in combination.
Takeyasu Isaka, “Introduction to GPS Technology”, Tokyo Denki University Press, February 28, 2003

  However, in the conventional method, it has been impossible to determine whether or not the positioning by GPS is successful without actually starting the positioning. In addition, the GPS positioning including the above judgment takes time. The UE-based AGPS positioning method in which arithmetic processing is performed in the receiver is particularly time consuming. For example, in an indoor location where a signal from a GPS satellite cannot be received, after the GPS positioning is disabled, another positioning such as a base station positioning is performed, so that the entire positioning takes a long time. In this case, the result that the positioning accuracy is poor is returned for the time taken for positioning. Therefore, it is awaited to appropriately determine whether the position of the receiver is indoor or outdoor and appropriately control the execution of GPS positioning according to the determination result.

  The present invention has been made in view of the above situation, and provides an indoor / outdoor determination apparatus, an indoor / outdoor determination method, and an indoor / outdoor determination program that can appropriately determine whether the position of the receiver is indoor or outdoor. Another object of the present invention is to provide a positioning system, a positioning method, and a positioning program that can obtain a positioning result corresponding to the state of the receiver in a shorter time.

  In order to achieve the above object, an indoor / outdoor determination apparatus according to the present invention is a determination for storing combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by a receiver. A database, receiving means for receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver, and identification specifying the number of radio signal sources of the received signal from the received measurement report information And the combination information including all the identification information of the wireless signal sources included in the measurement report information is extracted from the determination database, and the minimum number of wireless signal sources included in the extracted combination information is extracted. Setting means for setting a value as a minimum value of the number of radio signal sources, the number of radio signal sources, the minimum value of the number of radio signal sources, and a minimum radio signal source that enables indoor / outdoor determination Based on, characterized in that it comprises, a determination control unit configured to determine the receiver is not determinable whether or indoor and outdoor are outdoors or are indoors of the subject.

  In the indoor / outdoor determination apparatus according to the first aspect, when the measurement report information including the identification information of the radio signal source of the received signal is received from the target receiver, the radio signal source of the received signal is received from the received measurement report information. The combination information including all the identification information of the wireless signal sources included in the measurement report information is extracted from the determination database, and the minimum number of the wireless signal sources included in the extracted combination information is determined. The wireless signal source number is set as the minimum value. Then, based on the number of radio signal sources, the minimum number of radio signal sources, and the minimum number of radio signal sources that can be judged indoors / outdoors, whether the target receiver is indoors or outdoors or whether indoors or outdoors are judged It is determined whether it is impossible. Thus, the number of radio signal sources and the minimum number of radio signal sources are obtained from the measurement report information from the target receiver, and the number of radio signal sources, the minimum number of radio signal sources, and a predetermined minimum radio Based on the number of signal sources, it is possible to appropriately determine whether the target receiver is indoors, outdoors, or cannot be determined indoors or outdoors.

  More specifically, for determination based on the number of radio signal sources, the minimum number of radio signal sources, and the minimum number of radio signal sources, the number of radio signal sources, the minimum number of radio signal sources, and the minimum radio signal Compare the number of sources, and if the number of radio signal sources is equal to or greater than the minimum number of radio signal sources, it is determined that the target receiver is outdoors, and the number of radio signal sources is equal to or greater than the minimum number of radio signal sources. When the number of signal sources is less than the minimum value, it can be determined that the target receiver is indoors, and when the number of wireless signal sources is less than the minimum number of wireless signal sources, it can be determined that determination cannot be performed indoors or outdoors.

  Moreover, in an environment where the first indoor / outdoor determination method and the second indoor / outdoor determination method exist, the indoor / outdoor determination device according to the present invention can be configured as follows as the second aspect.

  An indoor / outdoor determination device according to the present invention includes a determination database storing combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by a receiver, and a target receiver. Receiving means for receiving measurement report information including identification information of the radio signal source of the received signal, specifying means for specifying the number of radio signal sources of the received signal from the received measurement report information, and the number of radio signal sources Determining whether or not the number of wireless signal sources is equal to or greater than the minimum number of indoor / outdoor determinations based on the first indoor / outdoor determination method; and First indoor / outdoor determination means for performing indoor / outdoor determination based on the first indoor / outdoor determination method when the number of wireless signal sources is greater than or equal to the number of wireless signal sources; When judged to be less than As the second indoor / outdoor determination method different from the first indoor / outdoor determination method, the combination information including all the identification information of the wireless signal source included in the measurement report information is extracted from the determination database. The minimum value of the number of radio signal sources included in the extracted combination information is set as the minimum value of the radio signal sources, and the number of radio signal sources, the minimum value of the radio signal sources, and the second indoor / outdoor A second method for determining whether the target receiver is indoor, outdoor, or indoor / outdoor determination is impossible based on a minimum number of wireless signal sources that can be determined indoor / outdoor based on a determination method And an indoor / outdoor determination means.

  In the indoor / outdoor determination apparatus according to the present invention, when measurement report information including identification information of a radio signal source of a received signal is received from a target receiver, the number of radio signal sources of the received signal is specified from the received measurement report information. Then, it is determined whether or not the number of wireless signal sources is equal to or greater than the minimum number of wireless signal sources that allows indoor / outdoor determination based on the first indoor / outdoor determination method. Here, if it is determined that the number of wireless signal sources is equal to or greater than the minimum number of wireless signal sources, indoor / outdoor determination based on the first indoor / outdoor determination method is executed, and the wireless signal source having the minimum number of wireless signal sources is determined. When it is determined that the number is less than the number, indoor / outdoor determination based on the second indoor / outdoor determination method is performed as follows. That is, as indoor / outdoor determination based on the second indoor / outdoor determination method, combination information including all the wireless signal source identification information included in the measurement report information is extracted from the determination database and included in the extracted combination information. The minimum value of the number of radio signal sources thus set is set as the minimum value of the number of radio signal sources. Then, based on the number of radio signal sources, the minimum number of radio signal sources, and the minimum number of radio signal sources that can be judged indoors / outdoors, whether the target receiver is indoors or outdoors or whether indoors or outdoors are judged It is determined whether it is impossible.

  Thus, first, based on the comparison result between the number of wireless signal sources and the minimum number of wireless signal sources, the execution of indoor / outdoor determination based on the first indoor / outdoor determination method is controlled, and the first indoor / outdoor determination is performed. When the indoor / outdoor determination based on the law cannot be performed, it is possible to quickly switch to the indoor / outdoor determination based on the second indoor / outdoor determination method. As indoor / outdoor determination based on the second indoor / outdoor determination method, the number of wireless signal sources and the minimum number of wireless signal sources are obtained from measurement report information from the target receiver, and the number of wireless signal sources and the number of wireless signal sources are obtained. Based on the minimum value and the predetermined minimum number of wireless signal sources, it is possible to appropriately determine whether the target receiver is indoors, outdoors, or cannot be determined indoors or outdoors.

  Furthermore, in an environment in which the first indoor / outdoor determination method and the second indoor / outdoor determination method exist, the indoor / outdoor determination device according to the present invention includes, as a third aspect, an indoor or outdoor state of the receiver at the time of signal reception. It can be set as the following structures provided with the database for judgment which further memorized indoor and outdoor feature information showing the feature of.

  The indoor / outdoor determination device according to the present invention includes a combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by a receiver, and indoors of the receiver at the time of reception of the signals. Or, a database for determination that stores indoor and outdoor feature information representing outdoor features in association with each other, and receiving means for receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver, A specifying means for specifying the number of radio signal sources of the received signal from the received measurement report information, and a minimum number of the radio signal sources that enables indoor / outdoor determination based on a first indoor / outdoor determination method Whether to determine whether or not the number of wireless signal sources is equal to or greater than the number of wireless signal sources, and when the number of wireless signal sources is determined to be equal to or greater than the minimum number of wireless signal sources, Perform inside / outside judgment If the number of wireless signal sources is determined to be less than the minimum number of wireless signal sources, a second indoor / outdoor determination method different from the first indoor / outdoor determination method, The combination information including all the identification information of the wireless signal source included in the measurement report information and the indoor / outdoor feature information corresponding to the combination information are extracted from the determination database, and the extracted combination information is included in the extracted combination information. Set the minimum value of the number of included wireless signal sources as the minimum number of wireless signal sources, determine whether the target receiver is indoor or outdoor based on the extracted indoor / outdoor feature information, Alternatively, the target receiver based on the number of wireless signal sources, the minimum number of wireless signal sources, and the minimum number of wireless signal sources that can be determined indoor / outdoor based on the second indoor / outdoor determination method. Is indoors or outdoors Or characterized in that it comprises a second indoor-outdoor determination unit that determines whether the indoor and outdoor equivocal, a.

  In the indoor / outdoor determination apparatus according to the present invention, when measurement report information including identification information of a radio signal source of a received signal is received from a target receiver, the number of radio signal sources of the received signal is specified from the received measurement report information. Then, it is determined whether or not the number of wireless signal sources is equal to or greater than the minimum number of wireless signal sources that allows indoor / outdoor determination based on the first indoor / outdoor determination method. Here, if it is determined that the number of wireless signal sources is equal to or greater than the minimum number of wireless signal sources, indoor / outdoor determination based on the first indoor / outdoor determination method is executed, and the wireless signal source having the minimum number of wireless signal sources is determined. When it is determined that the number is less than the number, indoor / outdoor determination based on the second indoor / outdoor determination method is performed as follows. That is, as indoor / outdoor determination based on the second indoor / outdoor determination method, combination information including all the wireless signal source identification information included in the measurement report information, and indoor / outdoor feature information corresponding to the combination information, It is extracted from the determination database, and it is determined whether the target receiver is indoor or outdoor based on the extracted indoor / outdoor feature information, or the number of wireless signal sources, the minimum number of wireless signal sources, and the second Based on the minimum number of wireless signal sources that can be determined indoor / outdoor based on the indoor / outdoor determination method, it is determined whether the target receiver is indoors or outdoors, or whether indoor / outdoor determination is impossible.

  Thus, first, based on the comparison result between the number of wireless signal sources and the minimum number of wireless signal sources, the execution of indoor / outdoor determination based on the first indoor / outdoor determination method is controlled, and the first indoor / outdoor determination is performed. When the indoor / outdoor determination based on the law cannot be performed, it is possible to quickly switch to the indoor / outdoor determination based on the second indoor / outdoor determination method. As indoor / outdoor determination based on the second indoor / outdoor determination method, it is determined whether the target receiver is indoor or outdoor based on indoor / outdoor feature information, or the number of wireless signal sources and the minimum number of wireless signal sources And whether the target receiver is indoors or outdoors based on the minimum number of wireless signal sources that can be judged indoors or outdoors based on the second indoor / outdoor judgment method, or whether indoors or outdoors cannot be judged. It is possible to selectively perform either indoor or outdoor determination.

  By the way, the present invention can be described as the invention of the indoor / outdoor determination device of the first to third aspects as described above, and also described as the invention of the indoor / outdoor determination method and the indoor / outdoor determination program as follows. Can do. These are substantially the same inventions only with different categories and the like, and exhibit the same operations and effects.

  An indoor / outdoor determination method according to the present invention includes a determination database storing combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by a receiver. An indoor / outdoor determination method executed by an apparatus, comprising: receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver; and the received signal from the received measurement report information Identifying the number of wireless signal sources, and extracting the combination information including all the identification information of the wireless signal sources included in the measurement report information from the determination database, and including the extracted combination information. Setting the minimum value of the number of wireless signal sources as the minimum value of the number of wireless signal sources, the number of wireless signal sources, the minimum number of wireless signal sources, Determining whether the target receiver is indoors, outdoors, or indoor / outdoor based on a minimum number of wireless signal sources that can be determined. (First embodiment).

  The indoor / outdoor determination method according to the present invention includes a determination database storing combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by a receiver. An indoor / outdoor determination method executed by an internal / external determination device, the step of receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver, and the received measurement report information Determining the number of radio signal sources of the received signal, and whether the number of radio signal sources is equal to or greater than a minimum number of radio signal sources capable of indoor / outdoor determination based on the first indoor / outdoor determination method A step of performing indoor / outdoor determination based on the first indoor / outdoor determination method when the number of wireless signal sources is determined to be equal to or greater than the minimum number of wireless signal sources, and the wireless signal When it is determined that the number is less than the minimum number of wireless signal sources, the second indoor / outdoor determination method different from the first indoor / outdoor determination method is used to identify the wireless signal sources included in the measurement report information. Extracting the combination information including all information from the database for determination, setting a minimum value of the number of radio signal sources included in the extracted combination information as a minimum value of the number of radio signal sources, and Based on the number, the minimum number of radio signal sources, and the minimum number of radio signal sources that can be judged indoors / outdoors based on the second indoor / outdoor judgment method, whether the target receiver is indoors or outdoors And determining whether indoor / outdoor determination is impossible (second mode).

  Furthermore, the indoor / outdoor determination method according to the present invention includes a combination information of identification information of an outdoor wireless signal source assumed as a wireless signal source of signals simultaneously received by a receiver, and the receiver at the time of receiving the signal. An indoor / outdoor determination method that is executed by an indoor / outdoor determination device that includes an indoor / outdoor feature information representing indoor / outdoor feature information stored in association with each other. Receiving measurement report information including identification information of a radio signal source of the signal; identifying a number of radio signal sources of the received signal from the received measurement report information; and the number of radio signal sources Determining whether the number of wireless signal sources is equal to or greater than the minimum number of indoor and outdoor determinations based on the indoor / outdoor determination method, and the number of wireless signal sources is equal to or greater than the minimum number of wireless signal sources Size And performing the indoor / outdoor determination based on the first indoor / outdoor determination method, and when the number of the wireless signal sources is determined to be less than the minimum number of the wireless signal sources, As a second indoor / outdoor determination method different from the determination method, the combination information including all the identification information of the wireless signal source included in the measurement report information, and the indoor / outdoor feature information corresponding to the combination information, The minimum value of the number of radio signal sources extracted from the determination database and included in the extracted combination information is set as the minimum value of the number of radio signal sources, and the target based on the extracted indoor / outdoor feature information It is possible to determine whether the receiver is indoors or outdoors, or to perform indoor / outdoor determination based on the number of wireless signal sources, the minimum number of wireless signal sources, and the second indoor / outdoor determination method. Minimal radio signal source The subject of the receiver and determining whether the determination impossible to or indoors and outdoors are outdoors or located indoors, characterized in that it comprises a based on (a third aspect).

  The indoor / outdoor determination program according to the present invention includes a determination database storing combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by a receiver, A receiving function for receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver; a specifying function for specifying the number of radio signal sources of the received signal from the received measurement report information; The combination information including all the identification information of the radio signal sources included in the measurement report information is extracted from the determination database, and the minimum value of the number of radio signal sources included in the extracted combination information is Setting function to set as the minimum value of the number of radio signal sources, the number of radio signal sources, the minimum value of the number of radio signal sources, and the minimum radio that enables indoor / outdoor determination And a determination control function for determining whether the target receiver is indoor, outdoor, or indoor / outdoor based on the number of signal sources (first mode). .

  The indoor / outdoor determination program according to the present invention includes a determination database storing combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by a receiver. The reception function of receiving measurement report information including identification information of the radio signal source of the received signal from the target receiver, and the specifying function of identifying the number of radio signal sources of the received signal from the received measurement report information A determination function for determining whether or not the number of wireless signal sources is equal to or greater than a minimum number of wireless signal sources that can be determined indoor / outdoor based on a first indoor / outdoor determination method; When it is determined that the number of sources is equal to or greater than the minimum number of wireless signal sources, a first indoor / outdoor determination function that performs indoor / outdoor determination based on the first indoor / outdoor determination method, and the number of wireless signal sources is Most If it is determined that the number of wireless signal sources is less than the limit, the second indoor / outdoor determination method different from the first indoor / outdoor determination method includes all the identification information of the wireless signal sources included in the measurement report information. The combination information is extracted from the determination database, and the minimum value of the number of radio signal sources included in the extracted combination information is set as the minimum number of radio signal sources, and the number of radio signal sources, the radio Based on the minimum value of the number of signal sources and the minimum number of radio signal sources that can be judged indoors / outdoors based on the second indoor / outdoor judgment method, whether the target receiver is indoors or outdoors, And a second indoor / outdoor determination function for determining whether internal / external determination is impossible (second mode).

  Furthermore, the indoor / outdoor determination program according to the present invention includes a combination information of identification information of an outdoor wireless signal source assumed as a wireless signal source of signals simultaneously received by a receiver, and the receiver at the time of receiving the signal. Report information including identification information of a radio signal source of a received signal from a target receiver by a computer equipped with a database for determination that stores indoor and outdoor feature information representing indoor or outdoor features in association with each other Receiving function, a specifying function for specifying the number of radio signal sources of the received signal from the received measurement report information, and indoor / outdoor determination based on the first indoor / outdoor determination method. When determining whether or not the number of wireless signal sources is equal to or greater than the minimum number of possible wireless signal sources, and when the number of wireless signal sources is determined to be equal to or greater than the minimum number of wireless signal sources, the first A first indoor / outdoor determination function for executing an indoor / outdoor determination based on an internal / external determination method; and when the number of wireless signal sources is determined to be less than the minimum number of wireless signal sources, the first indoor / outdoor determination method; As a different second indoor / outdoor determination method, the combination information including all the identification information of the wireless signal source included in the measurement report information and the indoor / outdoor feature information corresponding to the combination information are used for the determination. The minimum value of the number of radio signal sources extracted from the database and included in the extracted combination information is set as the minimum value of the number of radio signal sources, and the target receiver based on the extracted indoor / outdoor feature information Is determined to be indoors or outdoors, or the minimum number of wireless signal sources, the minimum number of wireless signal sources, and the indoor / outdoor determination based on the second indoor / outdoor determination method are enabled. Based on the number of radio signal sources Serial target receiver is characterized in that to execute a second indoor-outdoor determination function determines whether not determinable whether or indoor and outdoor are outdoors or located indoors, the (third aspect).

  By the way, this invention can be described as follows as an invention which concerns on the positioning system comprised including said indoor / outdoor determination apparatus.

  A positioning system according to the present invention is a positioning system that estimates the position of a receiver having a wireless communication function and a signal reception function used for GPS positioning, and wireless communication that acquires information related to wireless communication in the receiver Information estimation means; validity estimation means for estimating the effectiveness of GPS positioning based on information related to the wireless communication acquired by the wireless communication information acquisition means; and the effectiveness estimated by the validity estimation means GPS positioning control means for controlling the execution of GPS positioning of the receiver based on the wireless communication information acquisition means, the wireless communication information acquisition means is the indoor / outdoor determination device according to any one of the first to third aspects described above. The determination result by the indoor / outdoor determination device is used as information related to the wireless communication.

  In the positioning system, an appropriate indoor / outdoor determination result can be obtained by the wireless communication information acquisition unit configured to include the indoor / outdoor determination device, and the positioning result corresponding to the indoor / outdoor determination result can be efficiently (more In a short time).

  In addition to being described as a positioning system invention as described above, the present invention can also be described as a positioning method and positioning program invention as follows. These are substantially the same inventions only with different categories and the like, and exhibit the same operations and effects.

  The present invention can be described as follows as an invention related to a positioning method in which the above indoor / outdoor determination method is executed.

  The positioning method according to the present invention is a positioning method for estimating the position of a receiver having a wireless communication function and a signal reception function used for GPS positioning, and wireless communication for acquiring information related to wireless communication in the receiver An information acquisition step, an effectiveness estimation step of estimating the effectiveness of GPS positioning based on information related to the wireless communication acquired in the wireless communication information acquisition step, and the effectiveness estimated in the effectiveness estimation step A GPS positioning control step for controlling execution of GPS positioning of the receiver, and in the wireless communication information acquisition step, the indoor / outdoor determination method according to any one of the first to third aspects described above is provided. The determination result that is executed and obtained is used as information related to the wireless communication.

  Moreover, this invention can be described as follows as an invention which concerns on the positioning program by which said indoor / outdoor determination program is executed.

  The positioning program according to the present invention is a positioning program for causing a computer to estimate the position of a receiver having a wireless communication function and a signal receiving function used for GPS positioning, and acquires information related to wireless communication in the receiver Based on the wireless communication information acquisition function, the information related to the wireless communication acquired by the wireless communication information acquisition function, the effectiveness estimation function for estimating the effectiveness of GPS positioning, and the effectiveness estimation function A GPS positioning control function that controls the execution of GPS positioning of the receiver based on the effectiveness, and the computer executes the GPS positioning control function. An indoor / outdoor determination program according to the above aspect is executed, and the obtained determination result is used as information related to the wireless communication. That.

  According to the present invention, it is possible to appropriately determine whether the position of the receiver is indoor or outdoor, and to obtain a positioning result corresponding to the appropriate indoor / outdoor determination result efficiently (in a shorter time). Can do.

  Hereinafter, preferred embodiments of a positioning system and a positioning method according to the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

[Configuration of positioning server and cellular terminal]
FIG. 1 shows a positioning server 10 which is a positioning system according to this embodiment. The positioning server 10 is a device that estimates the position of the cellular terminal 20 that is a receiver according to the present embodiment. Positioning (control) of the cellular terminal 20 by the positioning server 10 is performed using a framework of a cellular communication system (mobile communication system). The positioning server 10 is connected to a plurality of cellular base stations 50 included in the cellular communication system, can transmit / receive information to / from each cellular base station 50, and is also connected to the cellular terminal via the cellular base station 50. Communication with 20 is possible. The positioning server 10 may be included in the cellular communication system.

  Before describing the positioning server 10 according to the present embodiment in detail, the cellular terminal 20 that is a positioning target will be described. The cellular terminal 20 is a device having a wireless communication function and a function for receiving signals used for GPS positioning. Specifically, as shown in FIG. 1, a cellular communication unit 21, a GPS receiving unit 22, and data storage And a portion 23.

  The cellular communication unit 21 is means for performing cellular communication (mobile communication) by performing wireless communication with a plurality of cellular base stations 50 included in a cellular communication network (mobile communication network) of the cellular communication system. . The cellular communication unit 21 is provided with an antenna for cellular communication, and cellular communication is performed using the antenna. The cellular communication unit 21 performs normal cellular communication such as telephone communication, and acquires information by cellular communication used for positioning of the cellular terminal 20 in the positioning server 10. Specific information to be acquired will be described later. The cellular communication unit 21 causes the data storage unit 23 to store the acquired information.

  In addition, the cellular communication unit 21 transmits and receives information to and from the positioning server 10 via the cellular base station 50 (cellular communication network). The cellular communication unit 21 transmits the information stored in the data storage unit 23 and used for positioning in the positioning server 10 to the positioning server 10. Information transmitted from the cellular communication unit 21 to the positioning server 10 includes information used for GPS positioning and base station positioning described later, and information used for control of GPS positioning (information related to wireless communication described later, or the wireless communication). Information for generating information). When the cellular terminal 20 is positioned, this transmission is triggered by, for example, a request from the positioning server 10 or a user operation on the cellular terminal 20.

  The GPS receiver 22 is a means for receiving a signal used for positioning transmitted from the GPS satellite 40. The GPS receiver 22 is provided with an antenna for receiving a signal from the GPS satellite 40, and reception is performed using the antenna. The GPS receiving unit 22 causes the data storage unit 23 to accumulate information related to the received signal from the GPS satellite 40 that is used for the GPS positioning calculation. Note that the GPS positioning calculation itself is performed by the positioning server 10.

  The GPS satellite 40 is located at a predetermined location according to time, and transmits a positioning signal used for positioning from the position. Specifically, four to five GPS satellites 40 are arranged on six orbits at an altitude of about 20,000 km, and move on the orbit as time passes. The positioning signal transmitted by the GPS satellite 40 includes identification information for distinguishing and specifying the GPS satellite 40, information indicating the orbit of the GPS satellite 40, and information indicating the time at which the signal was transmitted.

  The data storage unit 23 stores information used for positioning acquired by each of the cellular communication unit 21 and the GPS receiving unit 22. The functional configuration of the cellular terminal 20 has been described above.

  Subsequently, FIG. 2 shows a hardware configuration of the cellular terminal 20 according to the present embodiment. As shown in FIG. 2, the cellular terminal 20 includes a central processing unit (CPU) 201, a random access memory (RAM) 202, a read only memory (ROM) 203, an operation unit 204, a display 205, a cellular communication module 206, a cellular communication. The hardware includes an antenna 207, a GPS reception module 208, a GPS reception antenna 209, and the like. The functions described above are exhibited by the operation of these components. The above is the configuration of the cellular terminal 20.

  Next, the positioning server 10 will be described. As shown in FIG. 1, the positioning server 10 includes a transmission / reception unit 11, a GPS positioning calculation unit 12, a base station positioning calculation unit 13, a wireless communication information acquisition unit 14, an effectiveness estimation unit 15, and an estimation database. 16 and a GPS positioning control unit 17.

  The transmission / reception unit 11 is means for transmitting / receiving information to / from the cellular terminal 20 via the cellular base station 50. The transmission / reception unit 11 outputs information received from the cellular terminal 20 to the GPS positioning calculation unit 12, the base station positioning calculation unit 13, and the wireless communication information acquisition unit 14 according to the information.

  The GPS positioning calculation unit 12 is a means for calculating the position of the cellular terminal 20 by GPS positioning. Specifically, the GPS positioning calculation unit 12 receives the signal received from the GPS satellite 40 by the cellular terminal 20 (received by the GPS receiving unit 22 of the cellular terminal 20) and transmitted from the cellular terminal 20 to the positioning server 10. Receive information. Subsequently, the GPS positioning calculation unit 12 calculates the position of the cellular terminal 20 by calculating the position of the GPS satellite 40, the distance from the cellular terminal 20 to the GPS satellite 40, and the like from the information. For this calculation, assist data indicating the position of the GPS satellite 40 and the like acquired from the cellular communication system by the cellular terminal 20 and transmitted to the positioning server 10 may be used. The GPS positioning calculation unit 12 performs GPS positioning (calculation) under the control of whether or not GPS positioning can be executed from the GPS positioning control unit 17 as described later. The GPS positioning calculation unit 12 outputs information indicating the calculated position of the cellular terminal 20 to the cellular terminal 20, for example, as positioning result information. When the calculation of the position of the cellular terminal 20 by GPS positioning fails, the GPS positioning calculation unit 12 notifies the base station positioning calculation unit 13 to that effect.

  The base station positioning calculation unit 13 is a means for calculating the position of the cellular terminal 20 by base station positioning. Specifically, the base station positioning is processing as described below. The base station positioning calculation unit 13 receives base station positioning information transmitted from the cellular terminal 20 to the positioning server 10. The information for base station positioning is, for example, a transmission delay (for example, RTT: Round) of radio waves transmitted and received between the cellular terminal 20 and the cellular base station 50, which is measured and acquired by the cellular communication unit 21 of the cellular terminal 20. Trip time), information indicating the amount of radio wave attenuation (or information measured to calculate such information), and information (base station ID, sector ID) for specifying the cellular base station 50 and the sector. . The base station positioning calculation unit 13 calculates the distance between the cellular terminal 20 and the cellular base station 50 based on the information such as the transmission delay of the radio wave, and refers to the positional information of the cellular base station 50 and the like. Thus, the position of the cellular terminal 20 is calculated. Here, the positioning server 10 stores in advance information indicating the position of the cellular base station 50 and the direction of the sector (this information is not only the base station positioning calculation unit 13 but also a wireless communication information acquisition unit described later). 14 etc.).

  The base station positioning calculation unit 13 performs base station positioning (calculation) under the control of whether or not GPS positioning can be performed from the GPS positioning control unit 17 as described later. The base station positioning (calculation) is also performed when the GPS positioning calculation unit 12 notifies that the calculation of the position of the cellular terminal 20 by GPS positioning has failed. The base station positioning calculation unit 13 outputs information indicating the calculated position of the cellular terminal 20 to the cellular terminal 20, for example, as positioning result information. In addition, about a base station positioning, a positioning process can be performed in comparatively quick time compared with GPS positioning.

  The wireless communication information acquisition unit 14 and the effectiveness estimation unit 15 are means for determining whether or not to calculate the position of the cellular terminal 20 by GPS positioning. In this embodiment, a method of performing this determination based on a determination result of whether or not the cellular terminal 20 is indoors is employed. Hereinafter, functions of the wireless communication information acquisition unit 14 and the effectiveness estimation unit 15 will be described.

  As shown in FIG. 3, the wireless communication information acquisition unit 14 includes an indoor / outdoor determination device 30 that determines whether or not the cellular terminal 20 is indoors. The indoor / outdoor determination device 30 includes a determination database 31. A receiving unit 32, a specifying unit 33, an availability determining unit 34, a first indoor / outdoor determining unit 35, and a second indoor / outdoor determining unit 36.

  Among these, as shown in FIG. 4, the determination database 31 includes combination information of identification information of outdoor radio signal sources assumed as radio signal sources of signals simultaneously received by the cellular terminal 20, and cellular at the time of signal reception. Indoor / outdoor feature information representing indoor or outdoor features of the terminal 20 (in this case, information indicating whether GPS positioning is possible (hereinafter referred to as “GPS availability information”) is stored in association with each other. In FIG. 4, for example, there is a track record of simultaneously receiving signals from the radio signal sources BTS-A, BTS-B, and BTS-D, indicating that GPS positioning was possible at that time. There is a track record of receiving signals simultaneously from BTS-A, BTS-B, and BTS-E, indicating that GPS positioning was not possible. The construction of the determination database 31 will be described later.

  The receiving unit 32 receives measurement report information (Measurement Report (hereinafter referred to as “MR”)) including identification information of the radio signal source of the received signal from the cellular terminal 20. MR includes received signal level, signal transmission delay (for example, RTT: Round Trip Time) information, information indicating attenuation, GPS positioning availability information, and the like in addition to the identification information of the radio signal source of the received signal. Yes.

  The identifying unit 33 identifies the number N of wireless signal sources of the received signal from the received MR.

  The availability determination unit 34 determines whether or not the number N of wireless signal sources is equal to or greater than the minimum number of wireless signal sources M that enables indoor / outdoor determination based on a first indoor / outdoor determination method described later. The minimum number of wireless signal sources M is a predetermined value.

  The first indoor / outdoor determination unit 35 is configured when the number N of wireless signal sources is equal to or greater than the minimum number of wireless signal sources M (that is, when the indoor / outdoor determination based on the first indoor / outdoor determination method is possible). Next, the indoor / outdoor determination based on the first indoor / outdoor determination method is executed. The indoor / outdoor determination based on the first indoor / outdoor determination method here is, as an example, in an environment where pattern matching positioning is performed, by comparing the MR from the cellular terminal 20 with a previously stored positioning database. The approximate position is calculated, and indoors / outdoors are determined based on whether or not there is a discrepancy between the measured data in the MR and the predicted data at the approximate position.

  The second indoor / outdoor determination unit 36, when the number N of wireless signal sources is less than the minimum number of wireless signal sources M (that is, when indoor / outdoor determination based on the first indoor / outdoor determination method is impossible). The indoor / outdoor determination based on the second indoor / outdoor determination method described in detail later is executed.

  The wireless communication information acquisition unit 14 incorporating the indoor / outdoor determination device 30 configured as described above outputs the indoor / outdoor determination result of the cellular terminal 20 to the effectiveness estimation unit 15 of FIG. 1 as information related to wireless communication. .

  When the information indicating whether the cellular terminal 20 is indoors or outdoors is input as information related to wireless communication from the wireless communication information acquisition unit 14, the effectiveness estimation unit 15 in FIG. 1 performs GPS positioning effectiveness based on the information. Estimate gender. For example, when the cellular terminal 20 is assumed to be outdoors, it is estimated that GPS positioning is effective, and when the cellular terminal 20 is assumed to be indoors, it is estimated that GPS positioning is not effective. This is because, when the cellular terminal 20 is not outdoors, positioning cannot be performed because radio waves from the GPS satellite 40 cannot be received. The effectiveness estimation unit 15 outputs information indicating the effectiveness of the estimated GPS positioning to the GPS positioning control unit 17. The above is a configuration for determining the effectiveness of GPS positioning based on the determination result of whether or not the cellular terminal 20 is indoors.

  The GPS positioning control unit 17 is a GPS positioning control unit that controls execution of GPS positioning of the cellular terminal 20 based on the validity estimated by the validity estimating unit 15. Specifically, when the GPS positioning control unit 17 determines that the GPS positioning is valid, the GPS positioning control unit 17 controls the GPS positioning calculation unit 12 to execute the GPS positioning. On the other hand, when it is determined that GPS positioning is not effective, the base station positioning calculation unit 13 is controlled to execute base station positioning (the GPS positioning calculation unit 12 is not instructed to perform GPS positioning, or Prohibit execution of GPS positioning). The functional configuration of the positioning server 10 has been described above.

  FIG. 5 shows a hardware configuration of the positioning server 10. As shown in FIG. 5, the positioning server 10 includes a CPU 101, a RAM 102 and a ROM 103 which are main storage devices, a communication module 104 for performing communication, and a computer including hardware such as an auxiliary storage device 105 such as a hard disk. Composed. The functions of the positioning server 10 described above are exhibited when these components are operated by a program or the like.

[Explanation of indoor / outdoor judgment processing]
Subsequently, an indoor / outdoor determination process (indoor / outdoor determination method) executed by the indoor / outdoor determination device 30 according to the present embodiment will be described with reference to the flowchart of FIG. 6. This process is executed, for example, in a wireless communication information acquisition step (S01 in FIG. 9 and S11 in FIG. 10) by the wireless communication information acquisition unit 14 in a positioning process (FIGS. 9 and 10) described later.

  First, in the indoor / outdoor determination device 30 built in the wireless communication information acquisition unit 14, the receiving unit 32 receives MR including identification information of the wireless signal source of the received signal from the cellular terminal 20 (S21 in FIG. 6). The identifying unit 33 counts the number of radio signal source identification information included in the received MR, thereby identifying the number N of radio signal sources of the received signal (S22). For example, when the identification information of the radio signal source included in the MR is “BTS-A” and “BTS-B”, the number N of radio signal sources is specified as “2”. For radio signal sources, received signals belonging to the same cell may be regarded as received signals from the same radio signal source, or received signals from different sectors belonging to the same cell may be received from different radio signal sources. It may be regarded as a received signal.

  Then, the availability determination unit 34 determines whether or not the number N of wireless signal sources is equal to or more than the minimum number of wireless signal sources M that allows indoor / outdoor determination based on the first indoor / outdoor determination method ( S23).

  In S23, if the number N of wireless signal sources is equal to or more than the minimum number of wireless signal sources M, it can be determined that indoor / outdoor determination based on the first indoor / outdoor determination method is possible. The determination unit 35 performs indoor / outdoor determination based on the first indoor / outdoor determination method (S24). Here, as an example, the approximate position of the cellular terminal 20 is calculated by comparing the MR from the cellular terminal 20 with a pre-stored positioning database (not shown), and the measured data in the MR and the predicted data at the approximate position are calculated. Whether indoors or outdoors is determined based on whether there is a contradiction between

  On the other hand, if the number of wireless signal sources N is less than the minimum number of wireless signal sources M in S23, it can be determined that indoor / outdoor determination based on the first indoor / outdoor determination method is impossible. The indoor / outdoor determination unit 36 executes the indoor / outdoor determination based on the second indoor / outdoor determination method as described below.

  The second indoor / outdoor determination unit 36 extracts the combination information including all the identification information of the radio signal source included in the MR and the GPS availability information corresponding to the combination information from the determination database 31 and is extracted. The minimum value of the number of wireless signal sources included in the combination information is set as the wireless signal source number minimum value Q (S25).

  As a specific example, as shown in FIG. 7, when radio signal source identification information (BTS-A, BTS-B) is included in MR, the radio signal source identification information (BTS-A, BTS-B) is included. (BTS-A, BTS-B, BTS-D), (BTS-A, BTS-B, BTS-E), (BTS-A, BTS-B) The combination information and the corresponding GPS availability information are extracted from the determination database 31. The minimum value “2” of the number of radio signal sources (here, “3”, “3”, “2”) included in the three combination information is set as the radio signal source number minimum value Q. Is done.

  As another example, when the identification information (BTS-A, BTS-E) of the radio signal source is included in the MR, the combination includes all the identification information (BTS-A, BTS-E) of the radio signal source. As information, there are two combination information of (BTS-A, BTS-C, BTS-E, BTS-G) and (BTS-A, BTS-B, BTS-E) and corresponding GPS availability information. , Extracted from the database 31 for determination. Then, the minimum value “3” of the number of radio signal sources (here “4” and “3”) included in the two combination information is set as the radio signal source number minimum value Q.

  Next, the second indoor / outdoor determination unit 36 determines whether or not the number N of wireless signal sources is equal to or greater than the minimum value Q of the number of wireless signal sources (S26). If the number N of wireless signal sources is equal to or greater than the minimum number of wireless signal sources M in S26, it can be determined that the cellular terminal 20 is receiving signals from wireless signal sources equal to or greater than the minimum number of wireless signal sources M. The cellular terminal 20 is considered to be outdoors. Accordingly, the presence / absence of GPS availability information corresponding to the same combination information as the combination of identification information of the radio signal sources included in the MR is confirmed (S27). The inside / outside is determined (S29), and if there is no GPS availability information, it is determined that the cellular terminal 20 is outdoors (S28).

  On the other hand, if the number N of wireless signal sources is less than the minimum number of wireless signal sources M in S26, the presence / absence of GPS availability information corresponding to the same combination information as the combination of identification information of the wireless signal sources included in the MR is confirmed. If there is GPS availability information, indoor / outdoor determination is made based on the GPS availability information (S29). If there is no GPS availability information, it is determined whether the number N of wireless signal sources is less than the minimum number P of wireless signal sources that can be determined indoor / outdoor based on the second indoor / outdoor determination method (S31). ) If the number N of wireless signal sources is less than the minimum number of wireless signal sources P, it is determined that the indoor / outdoor determination based on the second indoor / outdoor determination method is impossible (S33). On the other hand, if the number N of wireless signal sources is equal to or greater than the minimum number P of wireless signal sources in S31, indoor / outdoor determination based on the second indoor / outdoor determination method is possible, but the cellular terminal 20 has a minimum wireless signal source. Since a signal is not received from several M or more wireless signal sources and it can be determined that the reception status is poor, it is determined that the cellular terminal 20 is indoors (S32).

  With the indoor / outdoor determination process in FIG. 6 as described above, it is possible to quickly obtain a determination result as to whether the cellular terminal 20 is indoors, outdoors, or cannot be determined.

  As described above, in the positioning server 10 according to the present embodiment, the indoor / outdoor determination based on the first indoor / outdoor determination method is performed based on the comparison result between the number N of wireless signal sources and the minimum number of wireless signal sources M. When execution is controlled and it is impossible to execute the indoor / outdoor determination based on the first indoor / outdoor determination method, it is possible to quickly switch to the execution of the indoor / outdoor determination based on the second indoor / outdoor determination method. Further, in the indoor / outdoor determination based on the second indoor / outdoor determination method, when there is GPS availability information, it is possible to appropriately determine indoor / outdoor based on the GPS availability information, and when there is no GPS availability information, Indoor / outdoor can be appropriately determined based on the number N of wireless signal sources, the minimum number Q of wireless signal sources, and the minimum number P of wireless signal sources capable of the second indoor / outdoor determination method.

  The determination database 31 can be constructed as follows, for example. First, information included in MR (identification information of a radio signal source of a received signal, received signal level, signal transmission delay (for example, RTT: Round Trip Time) information, information indicating attenuation, information on whether or not GPS positioning is possible) The database 31 for determination can be constructed by extracting necessary information (identification information of the radio signal source of the received signal and GPS availability information) from a positioning database (not shown) storing the . The positioning database may be used as it is as a determination database.

  Second, the determination database 31 can be constructed using measurement information obtained in the process of normal positioning and positioning database construction. This second method is divided into two types: a method using measurement data and a method using prediction data.

  Among them, the method using measurement data is a database that is linked to the identification information of the radio signal source measured by the cellular terminal and the availability of GPS positioning. For example, as shown in FIG. 8 (a), MR1, MR2, and MR3 including measurement data are received, and combinations of radio signal source identification information (BTS-A, BTS-B, and BTS-C) are received from MR1 and MR2. ) And GPS positioning enabled information are combined into a database, and further, a combination of wireless signal source identification information (BTS-A, BTS-D) and GPS positioning disabled information are combined into a database from MR3. The determination database 8 (a) is constructed.

  On the other hand, the method using prediction data is based on the assumption that all grids (individual locations where the area to be measured is divided into meshes) are outdoors, and propagation taking into account the topography and obstacles around each grid. Predictive data is created from the prediction formula and converted into a database. For example, as shown in FIG. 8B, the received signal strengths of all surrounding radio signal sources in a certain grid (position: POS1) are calculated according to a predetermined propagation prediction formula (S41), and all predicted received signals are calculated. Whether or not the wireless signal source signal can be received is determined according to a predetermined method with respect to the strength (S42). For example, on the basis of a predetermined noise level, if the reception intensity is higher than the noise level, it is determined that the radio signal source signal can be received. If the reception intensity is less than the noise level, the radio signal source signal It is determined that reception is impossible. The combination of identifiers of wireless signal sources determined to be receivable is stored in the determination database (S43). Thereafter, the determination database is constructed by executing S41 to S43 for each grid.

[Description of positioning process]
Subsequently, a positioning process (positioning method) executed by the positioning server 10 according to the present embodiment will be described using the flowchart of FIG. This process is started, for example, when the positioning server 10 receives a positioning request from the cellular terminal 20 via the cellular communication network. Note that the positioning process may be started with a trigger other than the above.

  First, communication information acquired by the cellular terminal 20 by the cellular communication unit 21 is transmitted to the positioning server 10. This information relates to information related to the wireless communication described above. In the positioning server 10, the wireless communication information acquisition unit 14 receives the information via the transmission / reception unit 11. Based on the received information, the wireless communication information acquisition unit 14 acquires information related to wireless communication (S01, wireless communication information acquisition step). As described above, the information related to wireless communication is information indicating the approximate position of the cellular terminal 20 and determination information regarding whether the cellular terminal 20 is indoors. The acquired information related to the wireless communication is output from the wireless communication information acquisition unit 14 to the effectiveness estimation unit 15.

  Subsequently, the effectiveness estimation unit 15 estimates the effectiveness of GPS positioning from the determination information as to whether or not the cellular terminal 20 is indoors (S02, effectiveness estimation step). From the above, when it is estimated that the GPS positioning is effective, that is, when it is determined that the cellular terminal 20 is outdoors, the validity estimation unit 15 refers to the estimation database 16 and then the cellular terminal. Information indicating the accuracy of GPS positioning is obtained from the information indicating the approximate position of 20, and the effectiveness of GPS positioning is estimated based on the information (S03, effectiveness estimation step). From the above, when it is estimated that the GPS positioning is effective, that is, when it is estimated that the accuracy of the GPS positioning is good, that effect is input from the validity estimating unit 15 to the GPS positioning control unit 17.

  When the GPS positioning control unit 17 inputs that the GPS positioning is valid, the GPS positioning control unit 17 controls the GPS positioning calculation unit 12 to execute the GPS positioning of the cellular terminal 20. Subsequently, GPS positioning calculation is performed by the controlled GPS positioning calculation unit 12 (S04, GPS positioning control step). In addition, the information regarding the reception of the positioning signal from the GPS satellite 40 by the cellular terminal 20 for performing the GPS positioning calculation may be requested and acquired from the positioning server 10 to the cellular terminal 20 at this time, Transmission from the cellular terminal 20 may be performed up to this point.

  When the GPS positioning calculation by the GPS positioning calculation unit 12 is successful (S05), the GPS positioning calculation unit 12 outputs information indicating the calculated position of the cellular terminal 20 to the cellular terminal 20, for example, as positioning result information. Processing ends.

  When it is estimated that GPS positioning is not effective in one of S02 and S03, that is, when it is determined that the cellular terminal 20 is indoors, or when the accuracy of GPS positioning is estimated to be poor, that effect Is input from the effectiveness estimation unit 15 to the GPS positioning control unit 17. When the GPS positioning control unit 17 inputs that GPS positioning is not valid, the GPS positioning control unit 17 controls the base station positioning calculation unit 13 to perform base station positioning of the cellular terminal 20 (GPS positioning). The control for performing the positioning calculation on the calculation unit 12 is not performed). Subsequently, base station positioning calculation is performed by the controlled base station positioning calculation unit 13 (S06, GPS positioning control step). Also, when the GPS positioning calculation by the GPS positioning calculation unit 12 is not successful (S05), the base station positioning calculation unit 13 performs the base station positioning calculation (S06).

  Note that information related to signal transmission / reception between the cellular terminal 20 and the cellular base station 50 for performing the base station positioning calculation may be requested and acquired from the positioning server 10 to the cellular terminal 20 at this time. However, it may be configured to transmit from the cellular terminal 20 up to this point. In addition, when the calculation processing similar to that of the base station positioning calculation unit 13 is performed as the calculation of the approximate position during the above-described GPS positioning effectiveness estimation process, information indicating the approximate position is displayed as the positioning result information. In this case, the positioning calculation by the base station positioning calculation unit 13 is not necessarily performed at this time.

  When the base station positioning calculation by the base station positioning calculation unit 13 is successful (S07), the base station positioning calculation unit 13 outputs information indicating the calculated position of the cellular terminal 20 to the cellular terminal 20, for example, as positioning result information. Then, the positioning process ends. When the base station positioning calculation by the base station positioning calculation unit 13 fails (S07), the fact that the positioning process has failed is output to the cellular terminal 20, for example, as positioning result information, and the positioning process ends.

  The above is the positioning process executed by the positioning server 10 according to the present embodiment. Note that the estimation of the effectiveness of GPS positioning in S02 and S03 does not necessarily have to be performed, but at least one of them may be performed.

[Description of another example of positioning processing]
Subsequently, another example of the positioning process (positioning method) executed by the positioning server 10 according to the present embodiment will be described using the flowchart of FIG. In the above example, the GPS positioning calculation is performed after it is estimated that the GPS positioning is effective, but the GPS positioning is started from the start time of the processing in the positioning server 10.

  Similar to the above-described processing, in the positioning server 10, the wireless communication information acquisition unit 14 acquires information related to wireless communication (S11, wireless communication information acquisition step). The acquired information related to the wireless communication is output from the wireless communication information acquisition unit 14 to the effectiveness estimation unit 15. On the other hand, the GPS positioning calculation unit 12 starts GPS positioning calculation (S12).

  Subsequently, the effectiveness of the GPS positioning is estimated from the determination information as to whether or not the cellular terminal 20 is indoors by the effectiveness estimation unit 15 to which information related to wireless communication is input (S13, effectiveness estimation step). From the above, when it is estimated that the GPS positioning is effective, that is, when it is determined that the cellular terminal 20 is outdoors, the validity estimation unit 15 refers to the estimation database 16 and then the cellular terminal. Information indicating the accuracy of GPS positioning is acquired from the information indicating the approximate position of 20, and the effectiveness of GPS positioning is estimated based on the information (S14, effectiveness estimation step). From the above, when it is estimated that the GPS positioning is effective, that is, when it is estimated that the accuracy of the GPS positioning is good, that effect is input from the validity estimating unit 15 to the GPS positioning control unit 17. In that case, no special control is performed on the GPS positioning calculation unit 12 from the GPS positioning control unit 17, and the GPS positioning calculation processing by the GPS positioning calculation unit 12 is continued.

  If it is estimated that GPS positioning is not effective in one of S13 and S14, that is, if it is determined that the cellular terminal 20 is indoors, or if the accuracy of GPS positioning is estimated to be poor, that effect Is input from the effectiveness estimation unit 15 to the GPS positioning control unit 17. When the fact that GPS positioning is not valid is input to the GPS positioning control unit 17, the GPS positioning control unit 17 controls the GPS positioning calculation unit 12 to stop the GPS positioning calculation. The received GPS positioning calculation unit 12 stops the GPS calculation processing (S15, GPS positioning control step).

  When the GPS positioning calculation unit 12 has succeeded in the GPS positioning calculation without controlling the cancellation of GPS positioning (S16), the GPS positioning calculation unit 12 uses the information indicating the calculated position of the cellular terminal 20 as the positioning result information. For example, it outputs to the cellular terminal 20, and a positioning process is complete | finished.

  In addition, when the control for stopping the GPS positioning calculation is performed, the GPS positioning control unit 17 controls the base station positioning calculation unit 13 to execute the base station positioning of the cellular terminal 20. Subsequently, base station positioning calculation is performed by the controlled base station positioning calculation unit 13 (S17, GPS positioning control step). Also, when the GPS positioning calculation by the GPS positioning calculation unit 12 is not successful (S16), the base station positioning calculation unit 13 performs the base station positioning calculation (S17).

  When the base station positioning calculation by the base station positioning calculation unit 13 is successful (S18), the base station positioning calculation unit 13 outputs information indicating the calculated position of the cellular terminal 20 as positioning result information, for example, to the cellular terminal 20 Then, the positioning process ends. When the base station positioning calculation by the base station positioning calculation unit 13 fails (S18), the fact that the positioning process has failed is output to the cellular terminal 20, for example, as positioning result information, and the positioning process ends. The above is another example of the positioning process performed by the positioning server 10 according to the present embodiment.

  As described above, in the positioning server 10 according to the present embodiment, for example, information related to wireless communication by the cellular communication unit 21 according to the state of the cellular terminal 20 or the like is acquired. Subsequently, the effectiveness of GPS positioning is estimated based on the information, and the execution of GPS positioning in the receiver is controlled based on the effectiveness. Therefore, it is possible to perform control such that the cellular terminal 20 executes GPS positioning when it is in a state where GPS positioning is easy to perform, and does not execute GPS positioning when it is difficult to perform GPS positioning. In addition, the positioning server 10 can control whether GPS positioning can be performed without actually performing GPS positioning, which takes time to determine whether it can be performed. That is, according to the positioning server 10 according to the present embodiment, positioning according to the state of the cellular terminal 20 in a shorter time can be achieved by avoiding GPS positioning in the case of the state of the cellular terminal 20 that is not good at GPS positioning. The result can be obtained. In that case, the power consumption in the cellular terminal 20 can be reduced by avoiding the reception of signals for GPS positioning or reducing the time.

  As described above, in this embodiment, the entity that performs the positioning calculation is the positioning server 10, but the entity that performs the positioning calculation may be the cellular terminal 20. In other words, in that case, the cellular terminal 20 may have all the functions of the present invention. In that case, information necessary for determination or the like is transmitted to the cellular terminal 20 in advance. Further, the IC chip included in the cellular terminal 20 may be provided with all functions. In addition, the cellular terminal 20 may have any of the functions described above. For example, calculation of the approximate position of the cellular terminal 20 and indoor / outdoor determination may be performed in the cellular terminal 20. Further, the cellular terminal 20 may have a GPS positioning calculation function (a function of the GPS positioning calculation unit 12).

  Further, as described above, the cellular terminal 20 to be positioned does not necessarily need to be able to perform cellular communication, and may be any device that can perform wireless communication. Specifically, any information can be used as long as information can be read from the wireless tag or wireless LAN can be performed as described above.

[About positioning program and indoor / outdoor determination program]
Subsequently, a positioning program for causing a computer to execute the above-described series of positioning server 10 positioning processes will be described. As shown in FIG. 11, the positioning program 61 is stored in a program storage area 60a formed in a recording medium 60 provided in the computer.

  The positioning program 61 includes a main module 61a that centrally controls positioning processing, a transmission / reception module 61b, a GPS positioning calculation module 61c, a base station positioning calculation module 61d, a wireless communication information acquisition module 61e, and an effectiveness estimation module. 61f, an estimation database module 61g, and a GPS positioning control module 61h. Functions realized by executing the transmission / reception module 61b, the GPS positioning calculation module 61c, the base station positioning calculation module 61d, the wireless communication information acquisition module 61e, the effectiveness estimation module 61f, the estimation database module 61g, and the GPS positioning control module 61h. Are the functions of the transmission / reception unit 11, the GPS positioning calculation unit 12, the base station positioning calculation unit 13, the wireless communication information acquisition unit 14, the effectiveness estimation unit 15, the estimation database 16, and the GPS positioning control unit 17 of the positioning server 10 described above. And the same for each.

  Next, an indoor / outdoor determination program for causing the computer including the determination database 31 to execute the indoor / outdoor determination processing of FIG. 6 will be described. As shown in FIG. 12, the indoor / outdoor determination program 62 is stored in a program storage area 60a formed in a recording medium 60 provided in the computer.

  The indoor / outdoor determination program 62 includes a main module 62a that comprehensively controls indoor / outdoor determination processing, a reception module 62b, a specific module 62c, a feasibility determination module 62d, a first indoor / outdoor determination module 62e, and a second And an indoor / outdoor determination module 62f. The function realized by executing the reception module 62b, the identification module 62c, the availability determination module 62d, the first indoor / outdoor determination module 62e, and the second indoor / outdoor determination module 62f is the indoor / outdoor determination device of FIG. Functions of the receiving unit 32, the specifying unit 33, the availability determining unit 34, the first indoor / outdoor determining unit 35, and the second indoor / outdoor determining unit 36 are the same.

  Each of the positioning program 61 and the indoor / outdoor determination program 62 described above is partially or entirely transmitted via a transmission medium such as a communication line, and is received and recorded (including installation) by another device. It is good also as a structure.

[Modified example of indoor / outdoor determination device]
By the way, as an embodiment of the indoor / outdoor determination device 30, the following two modifications may be adopted. The first modification is an aspect in which the determination database 31 does not store indoor / outdoor feature information (GPS availability information in the above embodiment) and does not perform indoor / outdoor determination based on indoor / outdoor feature information. The second modification is an aspect in which indoor / outdoor determination based on indoor / outdoor feature information is not performed and indoor / outdoor determination based on the first indoor / outdoor determination method is not performed. Hereinafter, each modified example will be described in order.

[First Modification]
The functional configuration of the indoor / outdoor determination device 30 in the first modification is the same as the functional configuration in FIG. 3 described above, but the indoor / outdoor determination processing (indoor / outdoor determination method) is a flowchart in FIG. That is, in the indoor / outdoor determination processing in the first modified example, first, the reception unit 32 in the indoor / outdoor determination device 30 receives the MR including the identification information of the radio signal source of the received signal from the cellular terminal 20 (FIG. 13). S21), the specifying unit 33 specifies the number N of radio signal sources of the received signal by counting the number of identification information of the radio signal sources included in the received MR (S22). Next, the availability determination unit 34 determines whether or not the number N of wireless signal sources is equal to or greater than the minimum number of wireless signal sources M that enables indoor / outdoor determination based on the first indoor / outdoor determination method. (S23).

  In S23, if the number N of wireless signal sources is equal to or more than the minimum number of wireless signal sources M, it can be determined that indoor / outdoor determination based on the first indoor / outdoor determination method is possible. The determination unit 35 performs indoor / outdoor determination based on the first indoor / outdoor determination method (S24).

  On the other hand, if the number of wireless signal sources N is less than the minimum number of wireless signal sources M in S23, it can be determined that indoor / outdoor determination based on the first indoor / outdoor determination method is impossible. The indoor / outdoor determination unit 36 executes the indoor / outdoor determination based on the second indoor / outdoor determination method as described below. The second indoor / outdoor determination unit 36 extracts combination information including all the identification information of the wireless signal sources included in the MR from the determination database 31, and the number of wireless signal sources included in the extracted combination information Is set as the wireless signal source number minimum value Q (S25).

  Next, the second indoor / outdoor determination unit 36 determines whether or not the number N of wireless signal sources is equal to or greater than the minimum value Q of the number of wireless signal sources (S26). If the number N of wireless signal sources is equal to or greater than the minimum number of wireless signal sources M in S26, it can be determined that the cellular terminal 20 is receiving signals from wireless signal sources equal to or greater than the minimum number of wireless signal sources M. It is determined that the cellular terminal 20 is outdoors (S28).

  On the other hand, if the number of wireless signal sources N is less than the minimum number of wireless signal sources M in S26, the number of wireless signal sources N is the minimum that enables indoor / outdoor determination based on the second indoor / outdoor determination method. It is determined whether or not the number of wireless signal sources is less than P (S31). If the number of wireless signal sources N is less than the minimum number of wireless signal sources P, indoor / outdoor determination based on the second indoor / outdoor determination method is impossible. (S33). On the other hand, if the number N of wireless signal sources is equal to or greater than the minimum number P of wireless signal sources in S31, indoor / outdoor determination based on the second indoor / outdoor determination method is possible, but the cellular terminal 20 has a minimum wireless signal source. Since a signal is not received from several M or more wireless signal sources and it can be determined that the reception status is poor, it is determined that the cellular terminal 20 is indoors (S32).

  With the indoor / outdoor determination process of FIG. 13 as described above, it is possible to quickly obtain a determination result as to whether the cellular terminal 20 is indoors, outdoors, or cannot be determined.

  The indoor / outdoor determination program for executing the indoor / outdoor determination process of FIG. 13 by the computer having the determination database 31 is the same as the configuration of FIG. 12 described above. Description is omitted.

[Second Modification]
As shown in FIG. 14, the indoor / outdoor determination device 30 in the second modification includes a setting database 37, a determination controller 38, a determination database 31, a reception unit 32, and a specification unit 33 similar to those in the above-described embodiment. Is provided. Of these, the setting unit 37 extracts combination information including all the identification information of the radio signal sources included in the MR from the determination database 31 and sets the minimum value of the number of radio signal sources included in the extracted combination information. Is set as the wireless signal source number minimum value Q. Based on the number N of wireless signal sources, the minimum number Q of wireless signal sources, and the minimum number P of wireless signal sources that can be used for indoor / outdoor determination, the determination control unit 38 performs indoor / outdoor determination according to the procedure described later.

  The indoor / outdoor determination process (indoor / outdoor determination method) in the second modification is a flowchart of FIG. That is, in the indoor / outdoor determination apparatus 30, the receiving unit 32 receives MR including the identification information of the radio signal source of the received signal from the cellular terminal 20 (S21 in FIG. 15), and the specifying unit 33 is included in the received MR. By counting the number of identification information of the received radio signal source, the number N of radio signal sources of the received signal is specified (S22). Next, the setting unit 37 extracts combination information including all the identification information of the wireless signal sources included in the MR from the determination database 31, and minimizes the number of wireless signal sources included in the extracted combination information. The value is set as the wireless signal source number minimum value Q (S25).

  Next, the determination control unit 38 determines whether or not the number N of wireless signal sources is equal to or greater than the minimum number Q of wireless signal sources (S26). If the number N of wireless signal sources is equal to or greater than the minimum number of wireless signal sources M in S26, it can be determined that the cellular terminal 20 is receiving signals from wireless signal sources equal to or greater than the minimum number of wireless signal sources M. It is determined that the cellular terminal 20 is outdoors (S28).

  On the other hand, if the number of wireless signal sources N is less than the minimum number of wireless signal sources M in S26, the number of wireless signal sources N is the minimum that enables indoor / outdoor determination based on the second indoor / outdoor determination method. It is determined whether or not the number of wireless signal sources is less than P (S31). If the number of wireless signal sources N is less than the minimum number of wireless signal sources P, indoor / outdoor determination based on the second indoor / outdoor determination method is impossible. (S33). On the other hand, if the number N of wireless signal sources is equal to or greater than the minimum number P of wireless signal sources in S31, indoor / outdoor determination based on the second indoor / outdoor determination method is possible, but the cellular terminal 20 has a minimum wireless signal source. Since no signal is received from several M or more wireless signal sources and it can be determined that the reception status is inferior, it is determined that the cellular terminal 20 is indoors (S32).

  With the indoor / outdoor determination process of FIG. 15 as described above, it is possible to quickly obtain a determination result as to whether the cellular terminal 20 is indoors, outdoors, or cannot be determined.

  Hereinafter, an outline of the indoor / outdoor determination program for causing the computer including the determination database 31 to execute the indoor / outdoor determination processing of FIG.

  As shown in FIG. 16, the indoor / outdoor determination program 62 is stored in a program storage area 60a formed in a recording medium 60 provided in the computer. The indoor / outdoor determination program 62 includes a main module 62a that comprehensively controls indoor / outdoor determination processing, a reception module 62b, a specific module 62c, a setting module 62g, and a determination control module 62h. The functions realized by executing the reception module 62b, the identification module 62c, the setting module 62g, and the determination control module 62h include the reception unit 32, the identification unit 33, the setting unit 37, and the indoor / outdoor determination device 30 in FIG. The functions of the determination control unit 38 are the same.

It is a figure which shows the function structure of the positioning server which is a positioning system, and the cellular terminal which is a receiver. It is a figure which shows the hardware constitutions of a cellular terminal. It is a figure which shows the function structure of a radio | wireless communication information acquisition part. It is a figure which shows the example of information memorize | stored in the database for determination. It is a figure which shows the hardware constitutions of a positioning server. It is a flowchart which shows an indoor / outdoor determination process (indoor / outdoor determination method). It is a figure for demonstrating the process of FIG. It is a figure for demonstrating construction of the database for judgment. It is a flowchart which shows the process (positioning method) performed with a positioning server. It is a flowchart which shows another example of the process (positioning method) performed by a positioning server. It is a figure which shows the structure of a positioning program. It is a figure which shows the structure of an indoor / outdoor determination program. It is a flowchart which shows the 1st modification of an indoor / outdoor determination process (indoor / outdoor determination method). It is a figure which shows the function structure of the 2nd modification of a radio | wireless communication information acquisition part. It is a flowchart which shows the 2nd modification of an indoor / outdoor determination process (indoor / outdoor determination method). It is a figure which shows the structure of the 2nd modification of an indoor / outdoor determination program.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Positioning server, 11 ... Transmission / reception part, 12 ... GPS positioning calculating part, 13 ... Base station positioning calculating part, 14 ... Wireless communication information acquisition part, 15 ... Effectiveness estimation part, 16 ... Estimation database, 17 ... GPS positioning Control unit, 20 ... cellular terminal, 21 ... cellular communication unit, 22 ... GPS reception unit, 23 ... data storage unit, 30 ... indoor / outdoor determination device, 31 ... database for determination, 32 ... reception unit, 33 ... identification unit, 34 ... Availability determination unit, 35 ... first indoor / outdoor determination unit, 36 ... second indoor / outdoor determination unit, 37 ... setting unit, 38 ... determination control unit, 40 ... GPS satellite, 50 ... cellular base station, 60 ... recording Medium 60a ... Program storage area 61 Positioning program 61a Main module 61b Transmission / reception module 61c GPS positioning calculation module 61d Base station positioning calculation module 61e Line communication information acquisition module, 61f ... Effectiveness estimation module, 61g ... Estimation database module, 61h ... GPS positioning control module, 62 ... Indoor / outdoor determination program, 62a ... Main module, 62b ... Reception module, 62c ... Specific module, 62d ... Availability determination module, 62e ... first indoor / outdoor determination module, 62f ... second indoor / outdoor determination module, 62g ... setting module, 62h ... determination control module, 101 ... CPU, 102 ... RAM, 103 ... ROM, 104 ... Communication module 105 ... Auxiliary storage device 201 ... CPU 202 ... RAM 203 ... ROM 204 204 Operation unit 205 ... Display 206 ... Cellular communication module 207 ... Cellular communication antenna 208 ... Reception module 209 ... Un for receiving Na.

Claims (13)

A database for determination storing combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by the receiver;
Receiving means for receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver;
Identifying means for identifying the number of wireless signal sources of the received signal from the received measurement report information;
The combination information including all the identification information of the radio signal sources included in the measurement report information is extracted from the determination database, and the minimum value of the number of radio signal sources included in the extracted combination information is Setting means for setting as the minimum number of wireless signal sources;
Based on the number of wireless signal sources, the minimum number of wireless signal sources, and the minimum number of wireless signal sources for which indoor / outdoor determination is possible, the target receiver is indoors or outdoors or indoors or outdoors. Determination control means for determining whether the determination is impossible;
An indoor / outdoor determination device. A database for determination storing combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by the receiver;
Receiving means for receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver;
Identifying means for identifying the number of wireless signal sources of the received signal from the received measurement report information;
Availability determination means for determining whether or not the number of wireless signal sources is equal to or greater than a minimum number of wireless signal sources that allows indoor / outdoor determination based on the first indoor / outdoor determination method;
First indoor / outdoor determination means for performing indoor / outdoor determination based on the first indoor / outdoor determination method when the number of wireless signal sources is determined to be equal to or greater than the minimum number of wireless signal sources;
When it is determined that the number of wireless signal sources is less than the minimum number of wireless signal sources, the wireless included in the measurement report information is used as a second indoor / outdoor determination method different from the first indoor / outdoor determination method. Extracting the combination information including all the identification information of the signal source from the determination database, and setting the minimum value of the number of radio signal sources included in the extracted combination information as the minimum number of radio signal sources, Based on the number of wireless signal sources, the minimum number of wireless signal sources, and the minimum number of wireless signal sources that can be determined indoor / outdoor based on the second indoor / outdoor determination method, the target receiver Second indoor / outdoor determination means for determining whether indoor or outdoor or indoor / outdoor determination is impossible;
An indoor / outdoor determination device. Combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by the receiver, and indoor / outdoor feature information representing indoor or outdoor characteristics of the receiver at the time of receiving the signal And a database for determination stored in association with each other,
Receiving means for receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver;
Identifying means for identifying the number of wireless signal sources of the received signal from the received measurement report information;
Availability determination means for determining whether or not the number of wireless signal sources is equal to or greater than a minimum number of wireless signal sources that allows indoor / outdoor determination based on the first indoor / outdoor determination method;
First indoor / outdoor determination means for performing indoor / outdoor determination based on the first indoor / outdoor determination method when the number of wireless signal sources is determined to be equal to or greater than the minimum number of wireless signal sources;
When it is determined that the number of wireless signal sources is less than the minimum number of wireless signal sources, the wireless included in the measurement report information is used as a second indoor / outdoor determination method different from the first indoor / outdoor determination method. The combination information including all the signal source identification information and the indoor / outdoor feature information corresponding to the combination information are extracted from the determination database, and the number of radio signal sources included in the extracted combination information Is set as the minimum value of the number of wireless signal sources, and it is determined whether the target receiver is indoors or outdoors based on the extracted indoor / outdoor feature information, or the number of wireless signal sources, Whether the target receiver is indoors or outdoors based on the minimum value of the number of wireless signal sources and the minimum number of wireless signal sources that can be determined indoor / outdoor based on the second indoor / outdoor determination method, or Not good for indoor / outdoor A second indoor-outdoor determination means for determining whether it is,
An indoor / outdoor determination device. The second indoor / outdoor determination means includes:
For the determination based on the number of radio signal sources, the minimum number of radio signal sources, and the minimum number of radio signal sources, the number of radio signal sources, the minimum number of radio signal sources, and the minimum radio signal When the number of wireless signal sources is equal to or greater than the minimum value of the number of wireless signal sources, it is determined that the target receiver is outdoors, and the number of wireless signal sources is the minimum number of wireless signal sources. If the number of wireless signal sources is less than the minimum value, it is determined that the target receiver is indoors. If the number of wireless signal sources is less than the minimum number of wireless signal sources, the indoor / outdoor determination is performed. Judge that it is impossible,
The indoor / outdoor determination device according to any one of claims 1 to 3, wherein An indoor / outdoor determination method executed by an indoor / outdoor determination apparatus comprising a determination database storing combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by a receiver There,
Receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver;
Identifying the number of radio signal sources of the received signal from the received measurement report information;
The combination information including all the identification information of the radio signal sources included in the measurement report information is extracted from the determination database, and the minimum value of the number of radio signal sources included in the extracted combination information is Setting as the minimum number of radio signal sources;
Based on the number of wireless signal sources, the minimum number of wireless signal sources, and the minimum number of wireless signal sources for which indoor / outdoor determination is possible, the target receiver is indoors or outdoors or indoors or outdoors. Determining whether the determination is impossible;
An indoor / outdoor determination method. An indoor / outdoor determination method executed by an indoor / outdoor determination apparatus comprising a determination database storing combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by a receiver There,
Receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver;
Identifying the number of radio signal sources of the received signal from the received measurement report information;
Determining whether the number of wireless signal sources is equal to or greater than a minimum number of wireless signal sources that can be determined indoor / outdoor based on the first indoor / outdoor determination method;
When it is determined that the number of wireless signal sources is equal to or greater than the minimum number of wireless signal sources, performing indoor / outdoor determination based on the first indoor / outdoor determination method;
When it is determined that the number of wireless signal sources is less than the minimum number of wireless signal sources, the wireless included in the measurement report information is used as a second indoor / outdoor determination method different from the first indoor / outdoor determination method. Extracting the combination information including all the identification information of the signal source from the determination database, and setting the minimum value of the number of radio signal sources included in the extracted combination information as the minimum number of radio signal sources, Based on the number of wireless signal sources, the minimum number of wireless signal sources, and the minimum number of wireless signal sources that can be determined indoor / outdoor based on the second indoor / outdoor determination method, the target receiver Determining whether it is indoors or outdoors or whether it is impossible to determine whether it is indoors or outdoors;
An indoor / outdoor determination method. Combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by the receiver, and indoor / outdoor feature information representing indoor or outdoor characteristics of the receiver at the time of receiving the signal And an indoor / outdoor determination method that is executed by an indoor / outdoor determination device including a determination database that stores the data in association with each other,
Receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver;
Identifying the number of radio signal sources of the received signal from the received measurement report information;
Determining whether the number of wireless signal sources is equal to or greater than a minimum number of wireless signal sources that can be determined indoor / outdoor based on the first indoor / outdoor determination method;
When it is determined that the number of wireless signal sources is equal to or greater than the minimum number of wireless signal sources, performing indoor / outdoor determination based on the first indoor / outdoor determination method;
When it is determined that the number of wireless signal sources is less than the minimum number of wireless signal sources, the wireless included in the measurement report information is used as a second indoor / outdoor determination method different from the first indoor / outdoor determination method. The combination information including all the signal source identification information and the indoor / outdoor feature information corresponding to the combination information are extracted from the determination database, and the number of radio signal sources included in the extracted combination information Is set as the minimum value of the number of wireless signal sources, and it is determined whether the target receiver is indoors or outdoors based on the extracted indoor / outdoor feature information, or the number of wireless signal sources, Whether the target receiver is indoors or outdoors based on the minimum value of the number of wireless signal sources and the minimum number of wireless signal sources that can be determined indoor / outdoor based on the second indoor / outdoor determination method, or Not good for indoor / outdoor And determining whether there are,
An indoor / outdoor determination method. A determination database storing combination information of identification information of outdoor radio signal sources assumed as radio signal sources of signals simultaneously received by the receiver,
A receiving function for receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver;
A specific function for identifying the number of radio signal sources of the received signal from the received measurement report information;
The combination information including all the identification information of the radio signal sources included in the measurement report information is extracted from the determination database, and the minimum value of the number of radio signal sources included in the extracted combination information is Setting function to set as the minimum number of wireless signal sources,
Based on the number of wireless signal sources, the minimum number of wireless signal sources, and the minimum number of wireless signal sources for which indoor / outdoor determination is possible, the target receiver is indoors or outdoors or indoors or outdoors. A determination control function for determining whether the determination is impossible;
An indoor / outdoor judgment program that executes A determination database storing combination information of identification information of outdoor radio signal sources assumed as radio signal sources of signals simultaneously received by the receiver,
A receiving function for receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver;
A specific function for identifying the number of radio signal sources of the received signal from the received measurement report information;
A determination function for determining whether or not the number of wireless signal sources is equal to or greater than a minimum number of wireless signal sources that enables indoor / outdoor determination based on the first indoor / outdoor determination method;
A first indoor / outdoor determination function for performing indoor / outdoor determination based on the first indoor / outdoor determination method when the number of wireless signal sources is determined to be equal to or greater than the minimum number of wireless signal sources;
When it is determined that the number of wireless signal sources is less than the minimum number of wireless signal sources, the wireless included in the measurement report information is used as a second indoor / outdoor determination method different from the first indoor / outdoor determination method. Extracting the combination information including all the identification information of the signal source from the determination database, and setting the minimum value of the number of radio signal sources included in the extracted combination information as the minimum number of radio signal sources, Based on the number of wireless signal sources, the minimum number of wireless signal sources, and the minimum number of wireless signal sources that can be determined indoor / outdoor based on the second indoor / outdoor determination method, the target receiver A second indoor / outdoor determination function for determining whether indoor or outdoor or indoor / outdoor determination is impossible;
An indoor / outdoor judgment program that executes Combination information of identification information of outdoor wireless signal sources assumed as wireless signal sources of signals simultaneously received by the receiver, and indoor / outdoor feature information representing indoor or outdoor characteristics of the receiver at the time of receiving the signal And a database for determination stored in association with each other,
A receiving function for receiving measurement report information including identification information of a radio signal source of a received signal from a target receiver;
A specific function for identifying the number of radio signal sources of the received signal from the received measurement report information;
A determination function for determining whether or not the number of wireless signal sources is equal to or greater than a minimum number of wireless signal sources that enables indoor / outdoor determination based on the first indoor / outdoor determination method;
A first indoor / outdoor determination function for performing indoor / outdoor determination based on the first indoor / outdoor determination method when the number of wireless signal sources is determined to be equal to or greater than the minimum number of wireless signal sources;
When it is determined that the number of wireless signal sources is less than the minimum number of wireless signal sources, the wireless included in the measurement report information is used as a second indoor / outdoor determination method different from the first indoor / outdoor determination method. The combination information including all the signal source identification information and the indoor / outdoor feature information corresponding to the combination information are extracted from the determination database, and the number of radio signal sources included in the extracted combination information Is set as the minimum value of the number of wireless signal sources, and it is determined whether the target receiver is indoors or outdoors based on the extracted indoor / outdoor feature information, or the number of wireless signal sources, Whether the target receiver is indoors or outdoors based on the minimum value of the number of wireless signal sources and the minimum number of wireless signal sources that can be determined indoor / outdoor based on the second indoor / outdoor determination method, or Not good for indoor / outdoor A second indoor-outdoor determination function determines whether there are,
An indoor / outdoor judgment program that executes A positioning system for estimating a position of a receiver having a wireless communication function and a signal reception function used for GPS positioning,
Wireless communication information acquisition means for acquiring information related to wireless communication in the receiver;
Based on information related to the wireless communication acquired by the wireless communication information acquiring means, effectiveness estimating means for estimating the effectiveness of GPS positioning;
GPS positioning control means for controlling execution of GPS positioning of the receiver based on the effectiveness estimated by the effectiveness estimating means;
With
The wireless communication information acquisition means includes
It is comprised including the indoor / outdoor determination device according to any one of claims 1 to 4, and the determination result by the indoor / outdoor determination device is information related to the wireless communication.
A positioning system characterized by that. A positioning method for estimating the position of a receiver having a wireless communication function and a signal reception function used for GPS positioning,
A wireless communication information acquisition step of acquiring information related to wireless communication in the receiver;
Based on information related to the wireless communication acquired in the wireless communication information acquisition step, an effectiveness estimation step of estimating the effectiveness of GPS positioning;
A GPS positioning control step for controlling execution of GPS positioning of the receiver based on the effectiveness estimated in the effectiveness estimation step;
Including
In the wireless communication information acquisition step,
The indoor / outdoor determination method according to any one of claims 5 to 7 is executed, and the obtained determination result is used as information relating to the wireless communication.
A positioning method characterized by that. A positioning program for causing a computer to estimate the position of a receiver having a wireless communication function and a signal receiving function used for GPS positioning,
A wireless communication information acquisition function for acquiring information related to wireless communication in the receiver;
Based on information related to the wireless communication acquired by the wireless communication information acquisition function, an effectiveness estimation function that estimates the effectiveness of GPS positioning;
A GPS positioning control function that controls execution of GPS positioning of the receiver based on the effectiveness estimated by the effectiveness estimation function;
Is executed by the computer,
When executing the wireless communication information acquisition function,
The indoor / outdoor determination program according to any one of claims 8 to 10 is executed, and the obtained determination result is used as information relating to the wireless communication.
A positioning program characterized by this.

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