KR0173902B1 - Wide Area Wireless Call Service Using Local Awareness - Google Patents

Abstract

The present invention uses the bidirectional paging channel to recognize the regional movement of the wide area service subscriber in the wireless paging system so that the wide area subscriber can automatically receive the wide area wireless paging service without registering his mobile area when moving the area. The present invention relates to a wide area wireless calling service method, and searches for a forward reference channel assigned to each area when a multi-channel bidirectional wide area terminal is waiting for reception on a current channel and detects that the area has been moved through channel monitoring. Identify the current region, tune in to its forward service channel assigned to that region, and listen to it; and through the reverse reference channel or its reverse service channel assigned to that region, No contracted area code and subscriber identification number By transmitting to a prepaid call system to receive a wide area wireless call service, it is possible to improve frequency usage efficiency and eliminate the inconvenience of having to register a mobile area with a wireless call system through a telephone (using ARS) every time the service area is moved. It works.

Description

Wide Area Wireless Call Service Using Local Awareness

1 is a block diagram of a wide area radio calling service system to which the present invention is applied.

2 is a process flow diagram of a bidirectional wide area terminal using the multi-channel method according to the present invention.

3 is a process flow diagram of a local radio calling system in accordance with the present invention.

4 is a call processing flowchart of a home radio calling system according to the present invention.

* Explanation of symbols for main parts of the drawings

11 wireless dedicated call network 12 wireless calling system

13: bidirectional wide area terminal by multi-channel method

The present invention uses the bidirectional paging channel to recognize the regional movement of the wide area service subscriber in the wireless paging system so that the wide area subscriber can automatically receive the wide area wireless paging service without registering his mobile area when moving the area. A wide area radio calling service method.

In the current wide area wireless paging service, if a subscriber leaves the current service area and moves to another service area, to continue to receive the service in that service area that has moved, by telephone before or during the travel time or during the move (using the regional registered ARS service) You must register your mobile area as the area code assigned to the radio calling system.

Accordingly, there has been an inconvenience in that a wide area radio calling subscriber must register a mobile area with a radio calling system as a telephone every time the area moves.

Accordingly, the present invention searches for a forward reference channel assigned to each region when the bidirectional wide-area terminal by the multi-channel method is in a reception state on the current channel and detects that the region has been moved through channel monitoring. Identify and listen to the forward service channel assigned to the region and listen to it, and use the reverse reference channel or the reverse service channel assigned to the region to receive the service area zone where the current location belongs. It is an object of the present invention to provide a wide area wireless calling service method for transmitting a wide area wireless calling service by transmitting to a wireless calling system as a subscriber identification number.

The purpose of the present invention is to improve the frequency usage efficiency and to eliminate the inconvenience of the subscriber having to register the mobile area in the wireless paging system through the telephone (using ARS) whenever the service area moves.

In order to achieve the above object, the present invention provides a plurality of radio calling systems connected to a radio call dedicated network; And a two-way wireless paging network having a two-way wide-area terminal in a multi-channel manner accommodated in the plurality of wireless paging systems, wherein the two-way wide area mobile terminal includes a forward reference channel allocated to each region. It identifies the service area to which it belongs and tunes in to its own forward service channel and listens to it. If the service area is moved, it detects it and selects either the reverse reference channel or the reverse service channel of the moved area. Transmitting a mobile area code and a subscriber identification number to the radio calling system which has jurisdiction over the area by using the first step of tuning to and receiving its own forward service channel; The wireless calling system receiving and decoding an area code and a subscriber identification number from the two-way wide area terminal and performing current location registration in a corresponding subscriber database; And a third step of processing the call according to the current location registration content of the subscriber.

Hereinafter, with reference to the accompanying drawings will be described an embodiment according to the present invention;

FIG. 1 is a block diagram of a wide area wireless call service system to which the present invention is applied, and 11 is a wireless call-only network, 12 is a wireless call system, and 13 is a bidirectional wide area terminal using a multi-channel method.

Looking at the configuration, there is a separate radio calling system 12 for each service area to provide a local service, these local radio calling system 12 is connected through a radio call dedicated network (11). The radio call-only network 11 has a voice line and a data line, and the voice line is used to connect a call between the radio call systems 12 and a data line is used to transmit and receive subscriber information between the radio call systems 12.

Each local radio calling system 12 has multiple radio call exchangers that handle forward and reverse radio call calls and a plurality of base station that transmits and receives radio signals. In addition, each local radio calling system 12 communicates with the bidirectional wide area terminals 13 in a multi-channel manner using forward and reverse radio call channels.

Table 1 below is a diagram showing a channel allocation method for each service area according to the present invention.

Each region consists of two reference channels and at least one service channel. The allocation of the reference channel to each service region is defined as the reference channel by selecting an appropriate one of an existing service channel or a new channel. Depending on the degree of interference, the reference channel may be used redundantly. All information transmitted through the forward reference channel includes a region code indicating the region, and even when there is no information to transmit, the duplex information having only the region code is transmitted so that the bidirectional wide area terminal 13 by the multi-channel method can transmit the information. Refer to the forward reference channel information to ensure that the area is recognized.

2 is a flowchart of a bidirectional wide area terminal according to the present invention according to the present invention.

At regular time intervals (e.g. one hour) or when the subscriber desires (presses a switch) or if the service channel state in use is unreceived, it is sequentially tuned to the forward reference channels assigned to each service area (201). Find a forward reference channel that can be received.

It then decodes the region code included in the information received on the forward reference channel (202) and determines whether the decrypted region code matches one of the region codes of the forward reference channel (203) and if it does not match the next forward reference After tuning to the channel (204), the process repeats the process of decoding the area code included in the information received in the forward reference channel (202), and if it matches, stores the decrypted area code (205). At this time, since a reference channel can be used simultaneously in two or more regions, there may be more than one region code that the reference channel should have, and all two or more region codes should be checked.

The decrypted area code is then compared to the previously identified and stored area code (206) to recognize that the area has been moved (207). After recognizing the local mobility, the terminal searches for channel frequency information held by the terminal to determine the reverse reference channel of the mobile region or its own reverse service channel information allocated to the corresponding region (208). The area code and the subscriber identification number are forwarded to the competent radio calling system (210). If the previously stored area code does not exist and cannot be compared (just after powering on the terminal), the area is considered moved and the subsequent process is performed. Subsequently, the receiving unit of the terminal is switched to its forward service channel assigned to the region indicated by the area code (210), and search for information received on the forward service channel is started (211, 212). If the channel state becomes unavailable for a predetermined time while waiting for service, the sequential tuning process 204 of the next forward reference channel is repeated.

If the comparison result of the two area codes is the same, it recognizes that the area has not been moved and switches the receiving unit of the terminal to its forward service channel assigned to the area (210) to retrieve information received on the service channel. Start (211,212). If the channel state becomes unavailable for a predetermined time while waiting for service, the sequential tuning process 204 of the next forward reference channel is repeated.

Table 2 below shows the structure of the database of the wireless paging system.

When subscribing to a wireless paging service in a subscriber's home area, only one home area call number, subscriber terminal identifier (ID) information (such as a cap code), and service channel numbers in the areas where the service is applied Get assigned.

Here, the home area refers to the area where the subscriber mainly receives the service as the residential area of the subscriber. In the service channel number assignment, only one forward service channel number (Cnf) is allocated when performing only one-way radio calling service, and forward and reverse service channel numbers (Cnf and Cnr) are allocated when performing bidirectional service.

Table 3 below is a structure diagram of data that a bidirectional wide area mobile terminal should have according to a multi-channel method for providing wide area wireless calling service according to the present invention. ), The service channel information assigned to them in those regions, and the terminal identifier information (cap code, etc.) of the terminal.

In the service channel information, the unidirectional service has only forward service channel information, and in the case of bidirectional service, it includes forward and reverse service channel information. The terminal only needs to check the region code by tuning only to the forward reference channels of the region to which the wide area service is subscribed.

3 is a process flow diagram of a local radio calling system according to the present invention.

The wireless paging system receives the area code and the subscriber identification number corresponding to the area where the subscriber is located from the two-way wide area terminal by the multi-channel method through the reverse reference channel or its reverse service channel assigned to the corresponding area (301). After decrypting the received area code and subscriber identification number (302), it is determined whether it is a home area (303).

If it is determined that the home area is the home area, the home wireless paging system having received the area code and the subscriber identification number registers and updates the subscriber's current location area in the subscriber's database (306).

As a result of the determination, if it is not its own home area, it establishes a data link with the home radio calling system (304) and transmits the decrypted area code and subscriber identification number to the home radio calling system through the established data link (305). At this time, the home radio calling system responds with a good acknowledgment (ACK) or a bad acknowledgment (NACK) of the area code and the subscriber identification number. Depending on the response, the process of transmitting the area code and the subscriber identification number may be repeated one or more times. Here, the home radio calling system refers to a radio calling system located in the subscriber's home area.

Meanwhile, the home wireless paging system that receives the area code and the subscriber identification number registers and updates the subscriber's current location area in the subscriber's database (306).

4 is a call processing flowchart of a home radio calling system according to the present invention.

When a caller generates a call number through a personal computer, a telephone, a portable communication device, etc., the caller receives the call from the public public telephone network (PSTN), identifies the network, and transmits the call to the wireless call system. Receiving the call (401) determines whether it is the home area of the call call (402).

As a result of determination, if it is the home area, the home wireless paging system searches the subscriber's database to confirm whether the subscriber is a valid subscriber (403) and generates a confirmation tone for inputting a call message to the caller (404). The home radio calling system receives a message including numbers, letters, special symbols, etc. from the caller and terminates the call (405), and then transmits the subscriber station identifier and the caller's message in the form of a radio call signal through the corresponding service channel ( 406).

As a result, if it is not its own home area, the local radio calling system recognizes the home area by the call number and connects the call to the home area radio calling system (407). The home wireless paging system searches the subscriber's database to determine if it is a valid subscriber (408) and then generates a confirmation tone (409) for caller input to the caller. The home radio calling system terminates the call after receiving a message containing numbers, letters, special symbols, etc. from the caller (410). The home radio calling system then identifies the subscriber's current location in the subscriber database (411) and transmits call information, such as subscriber terminal identifier, service channel information, and message, to the local radio calling system in the identified region (412). ). The local wireless calling system in which the subscriber is located receives the call information and transmits the subscriber station identifier and the caller's message in the form of a wireless call signal through the corresponding service channel (413).

The subscriber station searches for the presence of its own terminal identifier (cap code, etc.) while tuning to the forward service channel assigned to the region where it is located, and if the terminal identifier is found, decodes the message to sound an alarm or vibrate. And it is displayed on the liquid crystal display screen of the terminal.

As described above, the present invention searches for a forward reference channel assigned to each region when the multi-way bidirectional wide area terminal is waiting for reception on the current channel and detects that the region has been moved through channel monitoring. Identify a region, tune in and listen to its forward service channel assigned to that region, and use the reverse reference channel or its reverse service channel assigned to that region to subscribe to the service area to which it is located. By transmitting the code to the wireless paging system to receive the wide area wireless paging service, it is possible to improve the frequency usage efficiency and to eliminate the inconvenience of the subscriber having to register the mobile area with the wireless paging system through telephone (using ARS) every time the service area is moved. It can be effective.

Claims (6)

A plurality of radio calling systems 12 connected to a radio call dedicated network 11; And a two-way wireless paging network having a two-way wide-area terminal 13 by a multi-channel method accommodated in the plurality of wireless paging systems 12. Through the forward reference channel assigned to each region, it identifies the service area to which it belongs and tunes in to the forward service channel of its own and listens if the service area is moved. A first step of transmitting a mobile area code and a subscriber identification number to the radio calling system 12 which has jurisdiction over the area by using one of its reverse service channels, and then tunes to its forward service channel and waits for receiving; 201 to 212); The radio calling system 12 includes a second step (301 to 306) of receiving and decrypting an area code and a subscriber identification number from the bidirectional wide area terminal (13) to perform a current location registration in a corresponding subscriber database; And a third step (401 to 413) of processing the call according to the current location registration content of the subscriber. The method of claim 1, wherein the first steps (201 to 212), by tuning to the forward reference channel assigned to each service area, decrypted and stored the area code received in the tuned forward reference channel and then decoded the area code A fourth step 201 to 206 comparing the previously identified and stored area code; As a result of the comparison of the fourth step 201 to 206, if the two area codes are different, the local movement is recognized and the channel frequency information held by the bidirectional wide area terminal 13 is retrieved, and then the reverse reference channel or Using either of its reverse service channels, it forwards the area code and subscriber identification number for the mobile area to the competent radio calling system 12 and then tunes to its forward service channel assigned to the area indicated by the area code. A fifth step (207 to 212) of retrieving information; And a sixth step of searching for information received on the service channel by tuning to its forward service channel assigned to the area indicated by the area code if the two area codes are the same as a result of the comparison in the fourth step 201 to 206. And 210 to 212. The method as claimed in claim 2, wherein in the fifth step (207 to 212) or the sixth step (210 to 212), if the channel state becomes inaccessible for a predetermined time while waiting for service, the fourth step ( And a seventh step of repeating the operation from 201 to 206. 4. The method of claim 3, wherein the fourth steps 201 to 206 are included in information received on the forward reference channel found after searching for forwardable reference channels by sequentially tuning the forward reference channels assigned to each service area. An eighth step (201 to 203) for decoding the extracted area code to determine whether the decrypted area code matches one of the area codes of the found forward reference channel; A ninth step (204) of repeatedly performing the seventh step (201 to 203) for the next forward reference channel if the region code does not match as a result of the determination of the eighth step (201 to 203); And a tenth step (205, 206) of storing the decrypted area code and comparing the decrypted area code with a previously identified and stored area code if the area code matches as a result of the determination of the eighth step (201 to 203). Wide area radio calling service method comprising a. 2. The second step (301 to 306), wherein the wireless calling system 12 receives the area code and subscriber identification number when receiving the area code and subscriber identification number from the two-way wide area terminal (13) A fourth step (301 to 303) for determining whether the user is a home area after decrypting: if the user is the home area, the wireless terminal receives the area code and the subscriber identification number if it is the home area; The calling system 12 registers the subscriber's current location area in the subscriber's database in the fifth step 306: and the home wireless calling system if it is not the home area as a result of the determination in the fourth step 301 to 303. Establish a data link with (12) to transmit the decrypted area code and subscriber identification number to the home radio calling system 12, the home radio calling system 12 receiving the area code and subscriber identification number A sixth step of registering the current location area of the subscriber to the subscriber database (304 through 306) wireless wide area paging service method comprising: a. 2. The method of claim 1, wherein the third step (401 to 413) comprises: a fourth step (401, 402) of receiving the call and determining whether the call is the home area of the call; As a result of the determination of the fourth step (401, 402), if it is the home area, the wireless paging system 12 generates a confirmation tone to the caller and receives a message from the caller to call the two-way wide area terminal (13). (403 to 406); And as a result of the determination of the fourth step 401 or 402, if it is not the home area, the local radio calling system 12 recognizes the home area by the calling number and calls the home area radio calling system 12. The home radio calling system 12 generates an acknowledgment tone to the caller, receives a message from the caller, confirms the current location of the subscriber in the subscriber database, and then calls the radio calling system 12 of the region. And a sixth step (407 to 413) of calling the two-way wide area terminal (13).