KR100277223B1 - Call-only terminal with location information service - Google Patents

Abstract

The present invention relates to a call-only terminal with a location information service providing function, and implements a location information providing function combining a GPS, a wireless pager, and a position correction system with a conventional city phone that is used exclusively for calling. By doing so, it is possible to perform location tracking at a low price anywhere that requires location tracking, and by implementing a wireless pager and (D) GPS attached to a commercially available city phone, it is economical in terms of equipment. Entails.

Description

Call-only terminal with location information service

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a call-only terminal having a function of providing a location information service. The present invention relates to a Citiphone, which is a call-only terminal, a global positioning system (GPS), a wireless pager, and a positioning system (Differential Global Positioning System). It is a technology that makes it possible to easily determine the location of the terminal at a low price by implementing the location information providing function combined with DGPS).

GPS is a satellite navigation system developed for military use by the US Department of Defense. It uses 24 satellites to cover the whole world.Precise Positioning Service (PPS) using P code used for military use is 16m, and C is allowed for civilians. Standard Positioning Service (SPS) using the / A code has a position measurement of 100m.

Various methods have been developed to obtain more accurate location information, and DGPS has emerged as the most widely used method.

DGPS calculates the error component (correction error) in the pseudorange measurement value from the navigation message sent from the satellite from a known reference station, and informs the surrounding user of it, allowing for better positioning. That's the principle.

On the other hand, Citiphone has a disadvantage that base station cell coverage is less than 100m and hand-over (handover) cannot be transmitted continuously because it is a call-only terminal, but it can be purchased at a low cost because it is inexpensive. .

In the present invention, a location tracking device, which is widely used in the present invention, is implemented at a low cost by using the call-only terminal described above (in the present invention, for example, a city phone) and a wireless pager. For the purpose of

In other words, by adding a wireless pager function and a DGPS function to a cheap city phone, it is possible to provide a location tracking device that can be usefully used for vehicle theft, emergency rescue, and logistics information as well as the location of the lost child, the elderly, and the disabled.

1 is a schematic diagram of a city phone providing a location information service according to the present invention.

2 shows another embodiment of the invention incorporating a wireless pager.

3 illustrates another embodiment of the present invention incorporating a GPS receiver.

4 illustrates another embodiment of the present invention incorporating a DGPS receiver.

* Explanation of symbols for main parts of the drawings

1: city phone terminal 2: terminal ID transmission means

3: Wireless pager 4: Memory for storing location information

5: GPS receiver 6: DGPS receiver

In order to achieve the above object, the present invention provides a call-only terminal, so as to perform a location information service function that can indicate its current location; Terminal ID transmitting means for transmitting its ID (terminal ID) to the base station to which it belongs, wherein the operation of the transmitting means is performed periodically or by terminal operation.

In addition, in order to achieve the above object, the present invention provides a call-only terminal, to perform a location information service function that can indicate its current location; A terminal ID transmitting means for transmitting its ID (terminal ID) to a base station to which it belongs, wherein the operation of the transmitting means is performed periodically or by a terminal operation; A GPS receiver for providing location information using satellites; And a memory for storing location information for storing the location tracking value calculated by the GPS receiver at predetermined time intervals.

In addition, in order to achieve the above object, the present invention provides a call-only terminal, to perform a location information service function that can indicate its current location; A terminal ID transmitting means for transmitting its ID (terminal ID) to a base station to which it currently belongs; A DGPS receiver that provides a more accurate position value by compensating position information using satellites; A location information storage memory for storing location tracking values calculated by the GPS receiver at predetermined time intervals; And a wireless pager as a means for transmitting the location information when the general user requests the location information.

The above objects, features, and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a terminal providing a location tracking function of the most basic form implemented by the present invention, by adding an ID transmitting means (2) for transmitting a terminal identification number (ID) to the existing city phone terminal (1) of the base station The base station transmits its ID and time to the base station through a signal control channel or a traffic channel, and the base station transmits the ID and time to the base station management center together with the base station ID.

At this time, the terminal ID transmission is performed periodically or by terminal operation.

2 is another embodiment of the present invention, by embedding the radio pager 3 in the existing city phone terminal 1, so that other people can know if you want to know where the person currently using the terminal 1, When the general user calls the subscriber, the city phone terminal 1 transmits its ID and time to the nearby city phone base station to the base station, and the base station transmits it to the base station management center.

3 is another embodiment of the present invention, in which the GPS receiver 5 is mounted on the city phone terminal 1 instead of the wireless pager 3 so that the position information can be more accurately.

The subscriber's location tracking value is calculated by the GPS receiver 5 and stored in the location information storage memory 4 at regular time intervals. In addition, the method is transmitted to the base station management center.

4 is a view showing another embodiment of the present invention, in which the DGPS receiver 6 is mounted to provide much more accurate position information than when the GPS receiver 5 of FIG. 3 is used. The wireless pager 3 used in FIG. 2 is mounted so that the general user can accurately know the location of the subscriber.

That is, more accurate position tracking is possible by using a wireless pager as an error correction signal transmission method.

The base station management centers in each region can configure the network to identify the location of subscribers anywhere in the country, and enter and manage the location and address of each base station as a database on the Geographic Information System (GIS). The information is also stored in the database.

The subscriber transmits the location information transmitted from the base station to the base station management center through an automatic response service (ARS) or PC communication.

At this time, the information is provided so that only the person with the ID can receive it by providing the secret ID to the user who is promised in advance.

As described above, these methods can be applied to anything that needs location tracking at a low price, for example in terms of the protection of the elderly, children, and the disabled, or a sales force with a lot of business travel. In terms of dispatching and management of small carriers, location can be critical.

It can also be used for vehicle theft, accidents, and emergency rescue systems for personal protection.

As described in detail above, the present invention can perform location tracking at a low price anywhere that requires location tracking, and is implemented by attaching a wireless pager and (D) GPS to a city phone that is already commercially available. It also comes with economic advantages in terms of equipment.

In addition, preferred embodiments of the present invention are disclosed for the purpose of illustration, those skilled in the art will be able to various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You will have to look.

Claims (13)

A call-only terminal, comprising: providing a location information service that can indicate a location of a terminal as a location of a base station; And a terminal ID transmitting means for transmitting the terminal ID and the current time to the base station. The terminal as claimed in claim 1, wherein the terminal ID transmitting means comprises a wireless pager to transmit the terminal ID and the current time when the terminal ID transmitting means is called. The terminal of claim 1, wherein the terminal ID transmitting means is configured to periodically transmit the terminal ID and the current time, or to transmit the terminal ID when the terminal is operated. The method of claim 1, wherein the terminal ID and the current time are transmitted to the base station management center together with the terminal ID and the base station ID that received the current time, and together with the geographic information of a predetermined geographic information system and the location information of the base station ID. Call-only terminal with a location information service, characterized in that stored in the database. 5. The call-only terminal with the location information service of claim 4, wherein the information stored in the database is provided through terminal information or PC communication of an information service subscriber with basic information of a terminal subscriber added thereto. In the call-only terminal, to provide a location information service that can indicate the location of the terminal; A GPS receiver for collecting location information using satellites; A location information storage memory for storing the location information collected by the GPS receiver at regular time intervals; And a terminal ID transmitting means for transmitting the terminal ID, the current time, and the location information stored in the memory to the base station. The terminal of claim 6, wherein the terminal ID is configured to periodically transmit the terminal ID and the current time and location information, or to transmit the terminal ID when the terminal is operated. 7. The location of claim 6, wherein the terminal ID, current time, and location information are transmitted to a base station management center through a base station, and stored in a database together with location information corresponding to geographic information of a predetermined geographic information system. Call-only terminal with information service provision function. The terminal of claim 8, wherein the information stored in the database is provided through a terminal device or a PC communication of an information service subscriber with basic information of a terminal subscriber added thereto. In the call-only terminal, to provide a location information service that can indicate the location of the terminal; A DGPS receiver for collecting corrected position information using satellites; A location information storage memory for storing the information collected by the DGPS receiver at regular time intervals; A wireless pager for outputting a call detection signal upon receiving a call; And a terminal ID transmitting means for transmitting a terminal ID, a current time, and location information stored in the memory to a base station according to a call detection signal from the wireless pager. The terminal of claim 10, wherein the terminal ID transmitting means is configured to periodically transmit the terminal ID and the current time and location information, or to transmit the terminal ID when the terminal is operated. 11. The method of claim 10, wherein the terminal ID, the current time and location information is transmitted to the base station management center through the base station, characterized in that stored in a database with the location information corresponding to the geographic information of a predetermined geographic information system Call-only terminal with location information service. The terminal as claimed in claim 12, wherein the information stored in the database is provided through a terminal device or PC communication of an information service subscriber with basic information of a terminal subscriber added thereto.