JP2908406B1 - Wireless telephone system - Google Patents

Abstract

[Summary] [Problem] When an emergency call is made from a mobile phone, if the caller does not know the current location accurately, or enters the area where communication is difficult during the call and suddenly the call is cut off, The location of the caller can be detected in base station area units. When an emergency call number is identified in a control station device (S1 to S3), position registration information notified when a wireless mobile station moves from a serving base station zone to another base station zone is communicated as additional data. Send on channel. The emergency call receiving device 2 stores the position information in the memory unit and identifies from which operator group the call is from. In addition, the map information corresponding to the base station area uniquely determined for each of the business groups is stored, and a detailed location is searched by inputting surrounding building information managed in a database. Is displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio telephone system, and more particularly, to a radio telephone system for specifying an area of a base station in which a reporting mobile telephone is located when receiving an emergency report from a mobile telephone in a digital mobile communication system.

[0002]

2. Description of the Related Art Conventionally, a so-called mobile phone or PHS (Pe
2. Description of the Related Art Wireless telephone systems, such as a personal handyphone system (rsonic handphone system), have been rapidly spreading in recent years as means of communication. These wireless telephone systems are characterized in that they can talk while moving.

In these wireless telephone systems, a number of base stations are installed at predetermined intervals. A radio telephone system is realized by covering communication with mobile telephones located in a certain area by each of the myriad of base stations.

[0004]

By the way, in recent years, the number of 110 calls sent to police throughout the country has been increasing steadily. In particular, the number of cases accepted by mobile phones such as mobile phones tends to increase with the number of cases exceeding twice that of the same period of the previous year. The number of mobile phones exceeds 20 million nationwide, accounting for a quarter of the total number of mobile phones.
Call numbers are also increasing.

[0005] When reporting to the police from an unfamiliar land, it is difficult to explain the location because the reporter does not know the current location accurately, and there are few cases where the person being reported is confused. Absent. In addition, mobile phones are often talked while moving. For this reason, if the user enters an area where communication is difficult during the report, the call may be suddenly disconnected. In this case, it is impossible to perform the callback in a state where the mobile station of the reporting source has gone out of the service area. For this reason, when a call is disconnected in a situation where no information about the position is obtained from the caller, there is a disadvantage that even a rough position cannot be specified.

[0006] Here, Japanese Patent Application Laid-Open No. 4-295959 describes a technique for specifying a position by linking a car navigation system and a telephone terminal. In this case, there is a disadvantage that a car navigation system is always required.

Japanese Patent Application Laid-Open No. 8-180286 describes a technique of calculating longitude, latitude, and altitude in a portable terminal and transmitting the result. In this case, there is a disadvantage that a special device for calculating longitude, latitude, and altitude is required. It should be noted that the emergency calling device described in Japanese Patent Application Laid-Open No. 8-50694 also has a disadvantage that a special transmitting device must be used.

Further, in Japanese Patent Application Laid-Open No. 9-54881, a GPS (Global Positionin) is disclosed.
g System), which has the disadvantage that the housing of the mobile phone becomes large.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide a mobile communication system in a case where an originating mobile station does not know its current position during an emergency call. It is an object of the present invention to provide a radio telephone system capable of specifying a base station area where an aircraft is located and limiting a position of a caller.

[0010]

SUMMARY OF THE INVENTION A radio telephone system according to the present invention provides a position for transmitting position information indicating which base station area of a plurality of base station areas is present during a call. a wireless mobile station having an information transmission means, and storage means for storing the position information when the destination of the call is the specific partner of predetermined response to interruption of the call
In response , a base station having position specifying means for specifying the position of the wireless mobile station based on the storage content of the storage means,
It is characterized by including.

[0011] Then, before Symbol position specifying means, a database containing the names of buildings existing in said plurality of base station area respectively, and retrieving means for retrieving said database in response to an external command, to the search result Display means for displaying a map indicating the location of the building in response thereto. Further, the position information transmitting means is a wireless mobile station.
Moves from the serving base station zone to another base station zone
Location registration information to be notified to
It is characterized in that it is transmitted on a tunnel. In addition,
External command is input by the operator of the specific destination
It is characterized by being performed. The specific destination is the police or fire department.

[0012]

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

FIG. 1 is a block diagram showing an embodiment of a radio telephone system according to the present invention. In FIG. 1, a wireless telephone system according to the present invention includes a switching network M, a control device S
1 to S3 and radio base stations BS1 to BS4, perform exchange processing in response to transmission signals from a plurality of radio mobile stations MS1 to MS15, and
The exchange process is performed in response to a transmission signal to S1 to MS15.

Each of the radio base stations BS1 to BS4 has a different coverage area. In the state shown in the figure, the radio mobile stations MS1 to MS3 cover the area covered by the radio base station BS1, the radio mobile stations MS4 to MS7 cover the area covered by the radio base station BS2, and the radio base station BS3.
Wireless mobile stations MS7 to MS10 in the area covered by
Wireless mobile station MS in the area covered by wireless base station BS4
10 to MS 15 are each located.

The radio base stations BS1 to BS4 are connected to a plurality of radio mobile stations MS1 to MS15 via radio lines. The control station devices S1 to S3 are wireless base stations BS1 to BS
4 and a plurality of wired lines.

The exchange network M includes inter-office exchanges 1a to 1c for performing inter-office exchange processing, and an exchange K1 connected to any of these inter-office exchanges 1a to 1c for performing exchange processing in each office.
To K13 and the emergency call receiving device 2. The exchanges 1a to 1c are connected to control station devices S1 to S3.
Can be connected with multiple wired lines. It should be noted that an exchange K which can be connected to the interoffice exchange 1a via a wired line.
1 is connected to the emergency call receiving device.

Each of the control station devices S1 to S3 has a number collating unit for identifying an emergency call number ("110" for reporting to the police and "119" for reporting to the fire department), A transmission control unit for transmitting the location registration information to be notified when the fixed mobile station moves through the serving base station zone as additional data on the communication channel when the mobile station is identified as the emergency call number. It shall be configured. Here, the “location registration information” is binary information for identifying a location registration area or a carrier group in which the mobile station is located.

As shown in FIG. 2, the emergency call receiving device 2 in FIG. 1 identifies a memory unit 21 for storing location registration information and a business group from which the call is issued. An operator specifying unit 22, a data unit 23 for storing map information corresponding to a base station area uniquely determined for each operator group, and a base station area based on data stored in the data unit 23. Base station specifying unit 24 to specify
And a data search unit 25 for searching for a detailed location by inputting surrounding building information managed by the database;
And a display unit 26 for displaying the search result. It should be noted that the emergency call receiving device 2 exists as a type of fixed telephone connected to the exchange K1.

In this configuration, when an emergency call is received, that is, when there is a call 110 or 119, the location registration information is stored in the memory unit 21. Based on the stored location registration information, the business entity specifying unit 22 outputs a data request 220 for the business-specific area data to the data unit 23.

The data section 23 responds to the data request 220 from the business entity specifying section 22 and receives a data result 230 of the network information.
Is output. It is assumed that the data section 23 has area data for each carrier and area data for each base station.

The company specifying unit 22 analyzes the network information based on the data result 230 to specify the company, and the analysis result 2
40 is output to the base station specifying unit 24. Base station specifying unit 24
Outputs a data request 250 for area data for each base station to the data unit 23.

The data section 23 outputs a position number and color code data result 260 described later in response to the data request 250 from the base station specifying section 24.

The base station identification section 24 analyzes the data result 260 to identify the base station area, and outputs the analysis result 270 to the data search section 25. Based on the analysis result 270, the data search unit 25 performs a process of searching the specified area information for detailed information according to externally input information (genre or the like). The search result by the data search unit 25 is sent to the display unit 26 and displayed.

In short, the present system uses location registration information in the control channel (CH), which is updated when the mobile station moves from the base station area where the mobile station is currently located to another base station area. By doing so, even if the reporting mobile device does not know its current location at the time of an emergency call, a detailed map for that area can be obtained as long as the reporting mobile device identifies the base station area in which it is located. The location of the caller can be specified based on the information.

Further, even when communication becomes impossible in a state where information on the current position of the reporting mobile station has not been obtained, at least the base station area can be specified. For this reason, in the small zone system such as the PHS, sufficient information for specifying the reporting location can be obtained, so that the above-described problem of the related art can be solved.

Returning to FIG. 1, the control station devices S1 to S3 are connected to a plurality of wired telephone networks, and route communication paths from the wired telephone network to the wireless mobile stations MS1 to MS15 by the wireless base stations BS1 to BS15.
Connect via BS4. Further, the control station devices S1 to S3
Can control call originating and terminating by connecting a communication path from a wireless mobile station MS1 to MS15 to a wired telephone network or another wireless mobile station via a wireless base station. Furthermore, the radio mobile stations MS1 to MS15 are
Control or the like for identifying where in the BS 4 exists can also be performed.

Each of the control station devices S1 to S3 has a number collating unit for collating the reported number with the emergency report number (110, 119), and as a result of the collation, identifies the reported number as the emergency report number. Location registration information (in order to identify the binary number information for identifying the location registration area where the mobile station is located or the carrier group) when the wireless mobile device moves in the serving base station zone when , Etc.) as transmission data on the communication channel as additional data.

The radio base stations BS1 to BS4 have base station zones Z1 to Z4 corresponding to the individual base stations on a one-to-one basis.
Various types of control and control station devices S1 to S15 are provided for radio mobile stations MS1 to MS15 that exist in the zone of the own station.
3 for transmitting and receiving control signals and audio signals.

If the radio mobile stations MS1 to MS15 are located in any of the base zones of the radio base stations BS1 to BS4, the radio base stations BS1 to BS4 and the control station device S1
It is possible to communicate with a wired telephone network or another wireless mobile station through S3.

When an emergency occurs, the mobile station sends a 110
Alternatively, when a call of 119 is made, it is identified that the call is an emergency call by utilizing a number determination process which is an existing function of the control station. If it is determined that the call is an emergency call, the location information of the reporting mobile station held by the control station is added as communication channel data, and transmitted to the emergency call receiving device via the interoffice exchange and the exchange. You.

When the emergency call receiving device 2 receives the signal, the additional data (position information) is stored in the memory unit 21 in preparation for a sudden communication disconnection. After storing the data, the location registration information added to the communication channel and transmitted is expanded and analyzed. In this case, one radio base station BS
Since the area covered by BS1 to BS4 varies depending on each carrier group, it is determined from which carrier group the report is based on the network information shown in FIG.

Referring now to FIG. 3, the network information includes a country code, a carrier group number, and a network number within the group.

The country code in the figure is information of one octet for identifying the country where the telephone is currently located.
27 binary numbers. In the case of Japan, "00000
01 ".

The carrier group number is 2 for identifying the carrier group to which the telephone subscriber subscribes.
Octet information, which is a binary number from 0 to 15. The specific number is “001” in the case of the N mobile communication network group.
“0”, “0101” for N mobile communication, “0111” for S group, “100” for T group.
0 "," 1001 "for the DH group, and" 1010 "for the DT group.

The intra-group network number is information of 2 octets for identifying the regional network in the business group, and is 0.
It is a binary number of ~ 15. There is a preliminary information area adjacent to the country code.

Based on the business group specified by the determination using the network information having the above configuration, the map information uniquely set by each business group is extracted. For example, consider the case where the base station area of the operator group A is circular and the base station area of the operator group B is rectangular, as shown in FIG. In such a case, when the map information set by the operator group B is selected,
Map information composed of a plurality of rectangular base station area groups shown in FIG. 3B is extracted.

Next, from the extracted map information, it is determined which base station area the reporting mobile station is located by using the position number and the color code. Where "position number"
Is one octet of identification information indicating the location specifying area where the mobile station is located, and is a binary number from 0 to 255. Also,
The “color code” is an interference countermeasure code that is assigned to the radio control channel and the communication channel in units of repeated use of frequency (cluster), and is used to prevent a malfunction at the time of jump propagation from outside the repeat use unit.

[0038] By the way, a radio mobile station transmits a BCCH (Broadcast Channel) in a certain base station area.
If the radio wave e.e. can be received, communication can be performed. For example, when the wireless mobile station moves from a position that can be covered in a certain base station area A and becomes unable to communicate, it tries to receive the BCCH in the base station area B. Base station area B
Transmits a location registration request indicating that the mobile station is currently in the base station area B. When the request is received by the control station or the base station, the base station area B which is the current position is received.
And a request to register the position number is sent back to the wireless mobile station. The wireless mobile station receiving this reply stores the position number. As described above, the base station area can be specified by using only the position number, but the base station area can be specified more accurately by using the color code together.

When the base station area is specified, map information corresponding to each area is selected and displayed. In this state, if the caller has not been able to grasp the current position, the surrounding building is searched while the call is continued. Banks, hospitals,
A landmark information of a company or the like is made into a database for each genre, and a search condition is key-inputted to search for a building designated by a reporter. The genre search has a hierarchical mechanism, and by specifying an individual name from a specific genre, the position can be specified in more detail.

For example, as shown in FIG. 5, "hospital" is selected from options of "genre name" (step 51). Next, "internal medicine" is selected from the options of "hospital" (step 52). Finally, "XX clinic" is selected from "name" of the internal medicine (step 53). When the search by this selection is completed, a detailed map around the searched building is displayed on the display unit. By performing the above operations by key input or the like, the location of the building designated by the reporter can be specified.

By the way, in addition to the case where the operator searches the database by performing key input or the like in accordance with the content of the conversation in the call as described above, the position specification is started in response to the interruption of the call. It is possible. In the latter case, only the area can be specified. In the former case, not only the area but also a building or the like can be specifically specified.

As described above, in the present system, when the control station determines at the time of calling that the call is an emergency call, communication with the exchange is performed with the location registration information added, and Since the information is stored in the memory of the emergency call receiving device, once the communication with the operator is possible, the mobile device goes out of the service area and the call is suddenly cut off. The information remains and the location can be detected even if callback is not possible.

In the present system, the database is searched from information on surrounding buildings and the like to determine a more specific position. Therefore, even if the caller does not accurately grasp the current position, the search result can be obtained from the search result. The position can be specified based on the obtained information. Therefore, when the reporter reports from an unfamiliar land, even if the reporter does not accurately grasp the current position, the position can be reliably specified.

The present invention can further take the following aspects in connection with the description of the claims.

(1) The position information transmitting means transmits position registration information to be notified when the radio mobile station moves from the serving base station zone to another base station zone as additional data on a communication channel. 7. The method according to claim 1, wherein
The wireless telephone system according to any one of the above.

(2) The wireless telephone system according to (3) or (4), wherein the external command is input by an operator at the specific destination.

[0047]

As described above, according to the present invention, the location registration information in the control channel, which is updated when the wireless mobile station moves in the base station area where the mobile station is located, is stored and utilized. Accordingly, even when the reporting mobile device does not know its current position at the time of the emergency report, the base station area where the reporting mobile device is located can be specified. This has the effect of limiting the location of the caller based on a detailed map for that area. Further, even if communication becomes impossible in a state where information on the current location of the reporting mobile station is not obtained, the base station area is specified. There is an effect that sufficient information for specifying the information can be obtained. Further, since the radio mobile station in the present system does not need to be equipped with a GPS or the like, there is an effect that the housing of the mobile telephone does not become large.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a digital mobile communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram showing an internal configuration of the emergency call receiving device in FIG.

FIG. 3 is a diagram showing components of a network number.

FIG. 4 is a diagram illustrating an example of base station area division by operator group;

FIG. 5 is a diagram showing a search example of a building.

[Explanation of symbols]

 1a to 1c Central Office Switch 2 Emergency Report Receiving Device 21 Memory Unit 22 Business Identifier 23 Data Unit 24 Base Station Identifier 25 Data Search Unit 26 Display BS1 to BS4 Wireless Base Station K1 to K13 Exchange MS1 to MS15 Wireless Mobile Station S1 to S3 control station device

Claims (6)

(57) [Claims] 1. A wireless mobile station having position information transmitting means for transmitting position information indicating which base station area of a plurality of base station areas is present at the time of a call, storage means for storing the position information when the destination of a predetermined specific destination, interruption of the call
A base station having a position specifying means for specifying the position of the wireless mobile station based on the contents stored in the storage means in response to the request . 2. The method according to claim 1, wherein the position specifying unit includes the plurality of base stations.
Database containing the names of buildings that exist in each area
And a search for searching the database in response to an external command.
Search means and the location of the building according to the search results.
Display means for displaying a map.
The wireless telephone system according to claim 1. 3. The wireless communication system according to claim 2, wherein said location information transmitting means includes:
When moving from the serving base station zone to another base station zone
The location registration information to be notified is used as additional data in the communication channel.
3. The transmission according to claim 1, wherein the transmission is carried on a file.
On-board wireless telephone system. 4. The method according to claim 1, wherein the external command is an operation of the specific destination.
And input by a translator.
Is the wireless telephone system described in 3. 5. The wireless telephone system according to claim 1, wherein the specific destination is a police. 6. The wireless telephone system according to claim 1, wherein the specific destination is a fire department.