JP2005151373A - Psh current location information detection system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To correct a wrong location of a PHS to a right one even if the wrong location is detected. <P>SOLUTION: A location information history DB 15 uses antenna numbers to store, for each PHS number, current location data and last detection data notified from a PBX 11. A moving route DB 16 previously stores all antenna numbers to which the PHS can be moved next, for each antenna number. A location information comparing means 101 compares latest location data of the PHS notified from the PBX to data (the current location data or the last detection data) stored in the moving route DB, and verifies validity of the latest location data. A location information storage means 102 updates the current location data in the location information history DB as the last detection data and the latest location data as the current location data. A current location display means 103 displays on a screen only the latest location data which are recognized as valid, as current location information. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to detection of current position information of a local PHS (Personal Handyphone System).

  Up to now, in order to detect PHS position information, PHS uses the PBX function that the PBX notifies the PBX of the number of the antenna used for position registration, transmission, reception, and handover. It was detected as location information.

  However, in such a technique, there is a problem that position information different from position information that should be detected is notified to the PBX depending on the installation position of the antenna. For example, assume that there are two rooms A and B separated by a wall as shown in FIG. The actual position of the PHS (PS) is the room A, but when the antenna CS of the room B on the opposite side of the wall receives the PHS (PS) radio wave, the position information of the PHS (PS) is PBX is notified as room B. In such a case, incorrect position information is notified to the PBX, so that the position information detection accuracy is lowered.

  As a conventional technique related to solving this type of problem, a technique in which deviation information is transmitted to the host side when the current position information of the PHS terminal for position search deviates from the action schedule information written in the action schedule storage means in advance. Is known (see, for example, Patent Document 1).

JP 2002-209249 (1st page-5th page, FIG. 4)

  However, in the technology described in the above-mentioned patent publication, after the departure information is notified to the host side, for example, in a route bus operation management system, location registration for managing information on the current location of the PHS terminal for location search It seems that the function is used to start tracking the PHS terminal for position search, determine the position, and continue to monitor the operation status of the route bus thereafter.

  An object of the present invention is to provide a PHS current position information detection system and a PHS current position information detection method that can correct a PHS to a correct position as the PHS moves even if an incorrect position of the PHS is detected.

  The invention described in claim 1 is a PHS current position information detection system that detects the position of PHS (13 in FIG. 1) by receiving radio waves by an antenna (12 in FIG. 1) connected to PBX (11 in FIG. 1). 1. A PHS position information management device (FIG. 1) comprising position information comparison means (101 in FIG. 1), position information storage means (102 in FIG. 1), and current position display means (103 in FIG. 1) connected to the PBX. 14), a location information history database (15 in FIG. 1) that stores the current location data and the previous detection data notified from the PBX to the PHS location information management device for each PHS number by antenna number, and the following for each antenna number: The PHS has a travel route database (16 in FIG. 1) that stores in advance all the antenna numbers that can be moved, and the location information comparison means notifies from the PBX. The latest position data of PHS and the data stored in the movement route database are compared to verify the validity of the latest position data. The position information storage means uses the current position data in the position information history database as the previously detected data. PHS current position information, wherein the latest position data is updated to be current position data, and the current position display means displays only the latest position data whose validity is recognized as current position information on the screen. It is a detection system.

  The invention according to claim 2 is the invention according to claim 1, wherein the validity is verified by including the latest position data in the movable position number obtained from the current position data corresponding to the PHS number or the previous detection data. It is characterized by being performed depending on whether or not.

  According to a third aspect of the present invention, in the PHS current position information detection method for detecting the position of the PHS by receiving radio waves from an antenna connected to the PBX, the current position data and the previous detection data notified from the PBX are represented by the antenna number. A location information history database stored for each number, and a moving route database for storing in advance all antenna numbers to which the PHS can move next for each antenna number, using the PHS number notified from the PBX as a key A first procedure (step S1 in FIG. 8) for obtaining an antenna number as current location data by searching a location information history database, and a moving route database by using the antenna number obtained by the first procedure as a key Next, a second procedure (step S2 in FIG. 8) for obtaining an antenna number group to which the PHS can move, A third procedure (step S3 in FIG. 8) for verifying whether the antenna number that is the latest position data of the received PHS is included in the antenna number group obtained by the second procedure, A fourth procedure (step S6 in FIG. 8) for searching the position information history database using the PHS number as a key to obtain an antenna number which is the previous position data; The fifth procedure (step S7 in FIG. 8) for searching the moving route database by using the antenna number obtained by the above as a key and then finding the antenna number group to which the PHS can move, and the antenna number obtained by the fifth procedure A sixth procedure (step S8 in FIG. 8) for verifying whether the antenna number which is the latest position data of the received PHS is included in the group; Alternatively, if the antenna number group includes the antenna number which is the latest position data of PHS as a result of the eighth procedure, the seventh procedure (step of FIG. 8) displays the screen using the latest position data as the current position information. S8), and the eighth procedure for updating the position information history database by moving the antenna number of the current position field of the position information history database to the previously detected position field and using the latest position data as the current position data (steps S4 and S9 in FIG. 8). And a PHS current position information detecting method.

  According to the present invention, since the data in the position information history database is updated even if wrong latest position data is received, the movable antenna number obtained from the moving route database searched using the stored contents as a key is also provided. As the PHS moves, the latest position data hits as the PHS moves, and the PHS position information can be displayed on the screen. As a result, even if the wrong position information of the PHS is received, the effect that the correct position information is notified as the PHS moves can be obtained.

  Next, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing an embodiment of a PHS current position information detection system according to the present invention. In this embodiment, the antenna 12 is connected to the PBX 11, and the position information of the PHS terminal 13 located in the area of the antenna 12 can be detected by the antenna 12. A PHS location information management device 14 is connected to the PBX 11 and manages location information received by the PBX 11.

  A location information history database 15 and a travel route database 16 are connected to the PHS location information management device 14. The location information history database 15 stores and stores the current location information data notified from the PBX 11 to the PHS location information management device 14. The movement route database 16 stores in advance all antenna numbers that can be moved next by the PHS for each antenna number.

  The PHS position information management device 14 includes position information comparison means 101, position information storage means 102 and current position display means 103. The location information comparison unit 101 compares the current location data of the PHS 13 notified from the PBX 11 with the data stored in the travel route database 26 and verifies the validity. The location information storage unit 102 stores the current location data of the PHS 13 notified from the PBX 11 in the location information history database 25. The current position display unit 103 is a display unit that displays the latest position data of the PHS 13 on the screen.

  Next, the operation of the present embodiment will be described with reference to the flowchart shown in FIG.

  First, a radio wave is transmitted from the PHS 13 to the antenna 12 by an incoming call, transmission, handover, or the like of the PHS 13 and is notified to the PBX 11. The PBX 11 passes the position information that the position of the PHS 13 is within the area of the antenna 12 to the PHS position information management device 24. When the PHS position information management device 24 receives the position information of the PHS 13, the position information comparison means 101 searches the position information history database 15 using the PHS extension number of the PHS 13 as a key to obtain the antenna number which is the current position data (see FIG. 8 step S1).

  The position information comparison unit 101 searches the moving route database 16 using the antenna number obtained as a key, and then obtains a group of antenna numbers to which the PHS 13 can move (step S2). And it is verified whether the antenna number which is the positional information (it is called the newest position data) of received PHS13 is contained in the calculated | required antenna number group (step S3).

  As a result, if the latest position data is included in the antenna number group (YES in step S3), the received data (position information of PHS 13) is allowed. The position information storage means 102 moves the value of the current position field of the corresponding PHS number in the position information history database 15 to the previously detected position field, stores the latest position data as current position data in the current position field (step S4), and The current position display means 103 displays the screen using the latest position data as current position information (step S5).

  On the other hand, if the latest position data is not included in the antenna number group (NO in step S3), there is a possibility that the latest position data received as the current position data is incorrect. Therefore, the validity of the latest position data is verified based on the previously detected position data. The position information comparison unit 101 searches the position information history database 15 again using the PHS extension number of the PHS 13 as a key, and obtains the antenna number of the previously detected position field (step S6).

  The position information comparison unit 101 searches the moving route database 16 using the antenna number obtained as a key, and then obtains a group of antenna numbers to which the PHS 13 can move (step S7). Then, it is compared whether or not the latest position data number is included in the obtained antenna number group (step S8).

  As a result, if the antenna number that is the position information of the PHS 13 is included in the antenna number group (YES in step S8), the received data is regarded as correct. Even if it is not possible to move directly to the current position indicated by the latest position data, it is possible to return to the previous position only once and move from there to the current position. It expands its width.

  The position information storage means 102 moves the value of the current position field of the record corresponding to the corresponding PHS number in the position information history database 15 to the previously detected position field, and stores the latest position data as the current position information in the current position field (step). At the same time as S4), the current position display means 103 displays the screen with the latest position data as the current position information (step S5).

  On the other hand, if the latest position data is not included in the antenna number group by comparison with the previously detected position data (NO in step S8), it is determined that the latest position data is incorrect. In this case, the position information storage unit 102 updates the data in the position information history database 15 as described above, that is, moves the value of the current position field of the corresponding PHS number in the position information history database 15 to the previously detected position field, and updates the latest position. Only data is stored in the current position field as current position data (step S9), and the latest position data is not displayed on the screen.

  Thus, since the data in the position information history database 15 is updated even if wrong latest position data is received, the movable antenna number obtained from the moving route database 16 searched using the stored contents as a key also changes. As the PHS moves, the latest position data hits, and the PHS position information can be displayed on the screen. As a result, even if incorrect position information of the PHS is received, the correct position information is notified as the PHS moves.

  Next, this embodiment will be described using a specific example.

  FIG. 2 is a conceptual diagram of PHS position information detection. Four antennas 21 to 24 exist around the PHS 20 whose extension number is 2000. FIG. 3 shows an example of contents stored in the location information history database 15, and FIG. 4 shows an example of contents stored in the travel route database 16. In this example, the position information is indicated by the antenna number CS.

  Referring to FIG. 3, the current position of extension number 2000 PHS20 is CS1, and the previous detection position is CS2. At this time, it is assumed that CS3 is notified to the PHS position information management device 14 as the latest position data of the PHS 20.

  Here, the moving route database 16 of FIG. 4 is searched using CS1 which is the antenna number of the current position of the PHS 20 as a key. The movable antenna number is “CS2, CS3, CS4, CS5”. Since the notified latest position data is CS3 and CS3 is included in the movable antenna number group as a search result, this latest position data is allowed.

  Therefore, the previously detected position data of the PHS 20 in the position information history database 15 shown in FIG. 3 is rewritten to CS1, and the current position data is rewritten to CS3. A part of the rewritten location information history database 15 is as shown in FIG. Further, the current position display means 103 displays the latest position data on the screen.

  Next, it is assumed that CS2 is notified to the PHS location information management device 14 as the latest location data. Here, the moving route database 16 of FIG. 4 is searched using CS3 which is the antenna number of the current position of the PHS 20 as a key. The movable antenna numbers are “CS1, CS4, CS5, CS6”. The notified latest position data is CS2, and CS2 is not included in the movable antenna number group as a search result.

  Therefore, comparison with the previously detected position data is performed. Since the previously detected position data is CS1 as shown in FIG. 5, the travel route database 16 of FIG. 4 is searched using CS1 as a key. The movable antenna number is “CS2, CS3, CS4, CS5”. Since the notified latest position data is CS2 and is included in this movable antenna number group, this latest position data is allowed.

  Therefore, the previously detected position data of the PHS 20 in the position information history database 15 shown in FIG. 5 is rewritten to CS3, and the current position data is rewritten to CS2. Further, the current position display means 103 displays the latest position data on the screen.

  Further, it is assumed that CS7 is notified to the PHS position information management device 14 as the latest position data of the PHS 20 in the state of FIG. Here, the moving route database 16 of FIG. 4 is searched using CS3 which is the antenna number of the current position of the PHS 20 as a key. The movable antenna numbers are “CS1, CS4, CS5, CS6”. The notified latest position data is CS7, and CS7 is not included in the movable antenna number group as a search result. Therefore, comparison with the previously detected position data is performed.

  Since the previously detected position data is CS1, the travel route database 16 of FIG. 4 is searched using CS1 as a key. The movable antenna number is “CS2, CS3, CS4, CS5”. The latest position data notified is CS7 and is not included in the movable antenna number group. Therefore, the previously detected position data of the PHS 20 in the position information history database 15 shown in FIG. 5 is rewritten to CS3 and the current position data is rewritten to CS7, but the current position display means 103 does not display the screen of the latest position information data.

  FIG. 6 is a cross-sectional view of a building divided into two buildings, A and B, and FIG. 7 shows an example of contents stored in the movement route database 16. An antenna having an antenna number CS2 and CS4 in the A building, CS1 and CS3 in the B building, and CS5 in the common part of the A building and the B building are provided.

  It is assumed that the current position of the PHS 30 is in the area of CS1 in the B building, and when the previously detected position data of the PHS 30 is CS3, CS2 is notified as the latest position data. However, since CS2 is located in building A, in order to move from CS1 to CS2, it is usually necessary to go through CS3, CS5, and CS4, which cannot be moved directly from CS1 to CS2. is there. Further, it is not possible to move directly from CS3 at the previous detection position to CS2.

  Therefore, as shown in FIG. 7, if CS3 and CS5 are registered in the moving route database 16 as antenna numbers that can be moved from CS1, and CS1 and CS5 are registered as antenna numbers that can be moved from CS3, CS2 incorrectly notifies them. Position data. As a result, the position data CS2 erroneously notified due to a cause such as reception of radio waves in the A building is not displayed on the screen.

  In this way, it is possible to eliminate the display of position information data notified in error, so that the current position information can be correctly grasped and the accuracy of position information detection can be improved.

  In FIG. 6, the current position of the PHS 30 is in the area of CS1 of the B building. At this time, the power is turned off, then the PHS 30 moves to the A building, and then the power is turned on. Is notified. In this case, CS1 that is the current position data when the power is turned off is retained, and the latest position data is CS2, so there is a possibility that the latest position data is incorrect.

  Therefore, a comparison with the previously detected position data CS3 is performed, and as a result, the latest position data CS2 is not allowed and only the current position data and the previously detected position data are updated, and the screen is not displayed as the latest position. With this update, the current position data is CS2, and the previous detected position data is CS1.

  However, it is assumed that CS4 is notified as the latest position data next time. In this case, as described above, since the current position data is rewritten to CS2, CS4 is allowed as the latest position data. Therefore, the current position data and the previously detected position data are updated, and the screen is displayed with CS4 as the latest position information. Thus, the position information correction at the time of power ON / OFF is also performed correctly, and the accuracy of position information detection can be improved.

The figure which shows the structure of the PHS present position information detection system of this invention The figure for demonstrating one Example of the PHS present position information detection system of this invention The figure which illustrates the preservation | save content of the positional infomation history database for demonstrating the Example of FIG. The figure which illustrates the preservation | save content of the movement route database for demonstrating the Example of FIG. The figure which shows the update result from Figure 3 The figure for demonstrating the other Example of the PHS present position information detection system of this invention The figure which illustrates the preservation | save content of the movement route database for demonstrating the Example of FIG. The flowchart which shows operation | movement of the PHS present position information detection system of this invention. The figure which shows the specific example for demonstrating the subject which this invention tends to solve

Explanation of symbols

11 PBX
12 Antenna 13 PHS
14 PHS location information management device 15 location information history database 16 travel route database 101 location information comparison means 102 location information storage means 103 current location display means 20, 30 PHS
21-24 Antenna

Claims (3)

In the PHS current position information detection system that detects the position of the PHS by receiving radio waves from an antenna connected to the PBX,
A PHS location information management device configured by location information comparison means, location information storage means and current location display means and connected to the PBX;
A location information history database storing current location data and previous detection data notified from the PBX to the PHS location information management device for each PHS number by an antenna number;
A travel route database that stores in advance all antenna numbers to which the PHS can move next for each antenna number,
The location information comparing means compares the latest PHS location data notified from the PBX with the data stored in the travel route database to verify the validity of the latest location data,
The location information storage means updates the current location data of the location information history database as previously detected data and updates the latest location data as current location data,
The PHS current position information detection system, wherein the current position display means displays only the latest position data whose validity is recognized as current position information on the screen. 2. The validity verification is performed based on whether or not the latest position data is included in a movable antenna number obtained from current position data corresponding to a PHS number or previously detected data. The PHS current position information detection system described in 1. In the PHS current position information detection method for detecting the position of the PHS by receiving radio waves from an antenna connected to the PBX,
A location information history database that stores current location data and previous detection data notified from the PBX for each PHS number by antenna number;
A travel route database that stores in advance all antenna numbers to which the PHS can move next for each antenna number;
A first procedure for searching the position information history database using the PHS number notified from the PBX as a key to obtain an antenna number as current position data;
A second procedure for searching the moving route database using the antenna number obtained by the first procedure as a key and then obtaining a group of antenna numbers to which the PHS can move;
A third procedure for verifying whether or not the antenna number that is the latest position data of the received PHS is included in the antenna number group obtained by the second procedure;
A fourth procedure for searching the position information history database using the PHS number as a key to obtain an antenna number as the previous position data if reception data is not included in the antenna number group;
A fifth procedure for searching the moving route database using the antenna number obtained by the fourth procedure as a key, and then obtaining a group of antenna numbers to which the PHS can move;
A sixth procedure for verifying whether or not the antenna number that is the latest position data of the received PHS is included in the antenna number group obtained by the fifth procedure;
If the antenna number which is the latest position data of PHS is included in the antenna number group as a result of the third or sixth procedure, a seventh procedure for displaying the screen with the latest position data as the current position information;
And an eighth procedure for updating the position information history database using the latest position data as the current position data by moving the antenna number in the current position field of the position information history database to the previously detected position field. Information detection method.

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