KR20000007289A - Method for bidirectional outputting service using low output base station - Google Patents

Abstract

PURPOSE: A method for a interactive character cordless paging service is provided to use a base station for a low output with a small service radius. CONSTITUTION: A method for a interactive character cordless paging service comprises: a interactive character cordless pager(12) for receiving a character through a cordless paging network and for containing a Cordless Telephone 2 generation(CT-2) transferring terminal for transferring the character through a CT-2 cordless network; a cordless paging base station(11) for being fed with the required character information from a cordless paging switching station(15) for transferring to the interactive character cordless pager; and a transferring terminal for transforming the character data combined as a character button by using only a transferring terminal unit of a CT-2 terminal to a Dual Tone Multiple Frequency(DTMF) for transferring to a CT-2 base station(13).

Description

Bi-directional Text Call Service Using Low Power Base Station

The present invention relates to a two-way text radio calling service method capable of two-way text service using a small output base station with a small service radius, such as a cordless telephone generation (CT-2).

The conventional text service using the wireless pager is mainly for reception only, and many domestic and international wireless pagers support only one-way text service because it is difficult to construct an appropriate transmission wireless network.

In addition, the bidirectional text service using the conventional wireless call base station increases the size of the radio pager (RF: Radio Frequency) of the pager in order to transmit texts to the base station of several tens of kilos. There was a problem.

Meanwhile, existing wireless networks (ie, cellular, personal communication systems (PCS), trunked radio systems (TRS), radio data, etc.) may be used for text transmission. The existing text service using the wireless network also has a problem in that the size of the entire pager increases because the size of the receiver for receiving the wireless network is large. In addition, since the existing wireless network is installed for use as a dedicated network for a specific purpose, when additionally used for text radio call, re-investment of equipment is required, and thus, there is an economic problem due to an increase in royalties.

In order to solve the problems described above, the present invention has a unidirectional text wireless pager having a transmitting terminal of a small output terminal, such as a CT-2 terminal, to receive text using an existing wireless call network, and to transmit text to the CT. It is an object of the present invention to provide a two-way text radio calling service method for serving text in two directions using a small power wireless network such as a wireless network.

1 is a block diagram of a bidirectional text radio call system to which the present invention is applied.

Figure 2 is a flow diagram of an embodiment of a bidirectional text radio call service method according to the present invention.

* Explanation of symbols for the main parts of the drawings

11: radio call base station 12: bidirectional text radio pager

13: CT-2 base station 14: public network switching center

15: radio call exchange

In the present invention for achieving the above object, in the text radio call service method applied to the radio call system, the first radio call terminal according to the first radio call identification number outputs the text information received through the radio call network; First step; And a second step of transmitting the second radio call identification number and the text information to be transmitted by the first radio call terminal to the second radio call terminal through a small output wireless network.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary configuration of a bidirectional text radio call system to which the present invention is applied.

In the general unidirectional text radio call system, when the call number, voice, etc. desired to be received are received at the radio call switching station 15 via the public network switching center 14, the radio call switching center 15 checks the presence of the subscriber and then the number of exchanges is changed. The voice is converted into text and radio waves are emitted to the pager through each of the wireless base stations 11. At this time, the signal received by the pager generates a ring tone to notify the user of the text reception.

The bidirectional text radio call system to which the present invention is applied is a general unidirectional text radio call system, which uses an existing radio call network when receiving a text using the bidirectional text radio pager 12 and uses CT to transmit text. -2 use wireless network.

The bidirectional text radio pager 12 receives the text through the wireless call network, and is provided with a CT-2 transmitter to transmit the text through the CT-2 wireless network. However, a character button for generating a character is required for the transmission of the character.

The radio calling base station 11 receives the necessary character information from the radio calling exchange station 15 using the existing radio calling base station and transmits it to the bidirectional text radio pager 12.

The bidirectional text radio pager 12 includes a receiving end, a transmitting end, a liquid crystal display (LCD), and a character button.

The receiving end receives the text from the radio call base station 11 using the existing text transmission receiver.

The transmitter uses only the transmitter end of the CT-2 terminal to convert the text data combined by the character buttons into a dual tone multiple frequency (DTMF) signal and transmits it to the CT-2 base station 13.

The display section displays numbers (ie, phone number, time, etc.) and letters (ie, simple messages).

The character button selects and combines English, Korean, and numbers, and creates a character by using the scroll function and the button selection function of the character (that is, contact by "AM 10:00" 000-000-0000 (or 000-0000- 0000) ") to the CT-2 base station 13 via the transmitting end.

The CT-2 base station 13 transmits the data received from the bidirectional text radio pager 12 to the public network switching center 14 via the public line using the existing CT-2 base station as it is.

The public switching center 14 classifies the radio call-related data collected from the CT-2 base station 13 through the public line or the data from the telephone user through the dedicated line installed to process a large amount of data. Transmit to radio call switching center 15.

The radio call switching center 15 transmits radio call related data transmitted from the public network switching center 14 to the radio calling base station 11 through a dedicated line.

The bidirectional text radio call system as described above can be configured using a low power base station such as a CT-2 base station, thereby miniaturizing the radio pager and reducing the cost of the entire system.

2 is a flowchart illustrating a method for bidirectional text radio call service according to the present invention.

In the bidirectional text radio call service method according to the preferred embodiment of the present invention, an existing radio call network is used when receiving a text, and a bidirectional text service is available using a CT-2 wireless network when text is transmitted.

First, when the wireless call base station 11 transmits a radio call identification number and text information in a wireless call network (201), the bidirectional text radio pager 12 receives text information and displays the received text on the screen display unit. (202).

Then, when response or information transmission of new contents is necessary, the holder of the bidirectional text pager 12 converts the combined text data and the radio call identification number to be transmitted to the digit (ie, DTMF signal) through the character button operation. And transmits to CT-2 base station 13 via CT-2 wireless network (203).

Next, the CT-2 base station 13 transmits the DTMF signal received from the bidirectional text radio pager 12 to the public network switching center 14 via the public line (204).

Subsequently, the public switching center 14 transmits the DTMF signal received from the CT-2 base station 13 to the radio call switching center 15 via the dedicated line (205).

Subsequently, the radio call switching center 14 converts the DTMF signal received from the public network switching center 14 into a radio call identification number and text information suitable for the radio calling system and transmits the DTMF signal to the radio call base station 11 through the dedicated line (206). ).

Finally, the radio call base station 11 transmits the radio call identification number and the text information to the bidirectional text radio pager 12 (207).

The present invention described above is capable of various substitutions, modifications, and changes without departing from the spirit of the present invention for those skilled in the art to which the present invention pertains, and the above-described embodiments and accompanying It is not limited to the drawing.

The present invention as described above, by using a small output base station, such as commercially available CT-2 base station, miniaturize the pager, two-way text service is possible, and can reduce the cost of the entire system text to the user at a lower cost There is an effect that can provide a service.

Claims (6)

In the text radio call service method applied to a radio call system, A first step of outputting, by the first wireless calling terminal according to the first wireless calling identification number, text information received through the wireless calling network; And A second step of transmitting, by the first radio calling terminal, a second radio call identification number and text information to be transmitted to the second radio calling terminal through a small output wireless network; Two-way text radio call service method comprising a. The method of claim 1, The first step is, A third step of transmitting, by the wireless calling base station, text information to the first wireless calling terminal according to the first wireless calling identification number in the wireless calling network; And A fourth step of displaying the received text information on the screen by the first wireless calling terminal; Two-way text radio call service method comprising a. The method according to claim 1 or 2, The second step, A fifth step of converting, by the first radio calling terminal, the combined text information and the second radio call identification number to be transmitted into a dual tone multi-frequency signal and transmitting the multi-frequency signal to the small power base station through the low power wireless network; A sixth step of the low power base station transmitting a dual tone multi-frequency signal received from the first radio calling terminal to a public switching center via a public line; A seventh step of transmitting, by the public switching center, the dual tone multi-frequency signal received from the low power base station to the radio call switching station via a dedicated line; An eighth step of the radio calling switching station converting the dual tone multi-frequency signal received from the public switching center into the second radio calling identification number and the character information for the radio calling network and transmitting the converted dual tone signal to the wireless calling base station through a dedicated line; ; And A ninth step of the radio calling base station transmitting text information to the second radio calling terminal corresponding to the second radio call identification number; Two-way text radio call service method comprising a. The method of claim 3, wherein The first and second radio call terminals, respectively, The second generation wireless telephone (CT-2) is a two-way text radio call terminal, characterized in that it is a two-way text radio call terminal having a character button for combining the character and the transmitter. The method of claim 4, wherein The low power wireless network, Cordless Telephone 2 generation (CT-2) network, characterized in that the two-way text radio call service method. The method of claim 3, wherein The low power base station, Cordless Telephone 2 generation (CT-2) base station, characterized in that the two-way text radio calling service method.