KR100974347B1 - connection system for different types of TETRA system and data connection method - Google Patents

Abstract

The present invention relates to a heterogeneous tetra-system linkage device and a data linkage method, wherein two or more zones (networks) composed of different types of exchanges are changed. It is possible to enable data transfer between different types of TETRA exchanges.

TETRA, Heterogeneous, Common Format Message, Forward Address

Description

Connection system for different types of TETRA system and data connection method}

The present invention relates to a heterogeneous tetra system linkage device and a data linkage method for transmitting and receiving messages between tetra exchanges of different models.

To meet the communication needs of mobile users, various public wireless networks have been developed, such as the digital mobile communication system GSM (Global System for Mobile Communication). In addition to public networks with large coverage areas, various wireless local area networks and private networks have also been developed, such as specialized mobile radio or private mobile radio (PMR) systems. These are primarily dedicated wireless systems developed for professional state users, such as police, military units, oil plants, and other types of corporate networks. One example of a digital PMR system is TETRA (terrestrial relay radio; Tetra) defined by the European Telecommunications Standards Commission (ETSI).

However, since the Tetra system uses various types of exchangers manufactured by one or more manufacturers, the intersystem interface (ISI) standardization has not yet been performed, and thus the message formats between the Tetra exchangers of different models are not compatible. there is a problem. Accordingly, it can be said that it is currently impossible to exchange data messages between tetra exchangers of different models.

Accordingly, there is a need for a linkage device capable of transmitting and receiving data messages by linking different types of tetra switchboards.

In order to solve the inconvenience of the prior art, the present invention checks the receiver of the data message received from the exchange A and converts the format into a format suitable for the corresponding exchange (B exchange) (A exchange format-> common format> B exchange format). It is an object of the present invention to provide a heterogeneous tetra system linkage device and a data linkage method which are transmitted to a corresponding exchange (B switch).

In addition, the present invention converts the address of the data message received from the exchange A and transmits the data to the corresponding exchange (B exchange) through a broadcast method, thereby allowing heterogeneous tetra to transmit and receive messages in different regions (networks). The purpose is to provide a system linkage device and data linkage method.

In order to achieve the above object, in the heterogeneous Tetra system linkage device and the data linkage method of the present invention, a common format message conversion and address change method may be used to enable message transmission between different types of Tetra systems.

The present invention relates to a data linkage method of a heterogeneous tetra system, comprising the step of a tetra linkage device registering its address (ISSI) with one or more exchanges, and transmitting a message from the exchange A to the tetra linkage device. And converting the received message into a common format message and transmitting the same.

In the present invention, the format of the message of the A exchange is to set the sender address to the address of the A switch, the receiver address to the address of the tetra-association apparatus (ISSI), and the forwarding address to the B exchange to transmit the message. It is preferable that the message is set to the address of.

In the present invention, the common format message may be configured to change the sender address of the message received at the exchange A to the address of the tetra-association device (ISSI), the receiver address to the address of the exchange B, and the forward address of the exchange A. It is preferable that the message is changed to an address.

In the present invention, the step of converting and transmitting the common format message is preferably transmitted through a broadcasting method or a mobility information tracking method.

In addition, the present invention preferably comprises a heterogeneous tetra-system linkage device for connecting heterogeneous exchangers on a tetra network using the heterogeneous tetra-system data linkage method.

According to the present invention, by using a heterogeneous Tetra system linkage device, there is an effect that the message transmission between the Tetra systems of different models can be.

In addition, it is possible to provide expanded power IT services through systematic wireless network construction and operation such as development of power IT wireless network operation management system using heterogeneous tetra system linkage device.

In addition, due to the activation of the use of the tetra network has an effect applicable to various sectors.

Preferred embodiments of the present invention will be described with reference to the accompanying drawings. In adding reference numerals to components of the following drawings, it is determined that the same components have the same reference numerals as much as possible even if displayed on different drawings, and it is determined that they may unnecessarily obscure the subject matter of the present invention. Detailed descriptions of well-known functions and configurations will be omitted.

1 is a view showing a data linking method using a heterogeneous tetra system linkage device according to an embodiment of the present invention.

Referring to FIG. 1, when a message is transmitted to a switch 1100 from a terminal 1000 in a switch area of a company A (S100), a message received from the switch medium is transmitted through a company A tetra external interworking server 1200 (S110). ) To the company A message receiving module 1310 in the tetra-linked device (1300) (S120).

At this time, the Tetra linkage device 1300 may receive a message transmitted from the exchange by registering its address (ISSI) in advance not only in the A company but also in at least one exchange.

In addition, the Tetra linkage device 1300 is a message transmission and reception module (company A, company B) that can communicate with the company (company A message receiving module 1310, company A message sending module 1316, company B message reception) Module 1330, company B message sending module 1336), and modules 1312 and 1332 for converting messages of each company into common format messages and modules 1314 for converting common format messages to messages of each company. , 1334). It also includes modules 1318 and 1324 and a routing module 1320, an error code table 1322 and a logging module 1326 that can send and receive common format messages, and manage and monitor the sending and receiving of common format messages. Can be.

The routing module 1320 may be configured to determine a direction to be routed by the tetra message receiving module 1318, and in more detail, a routing method (address translation method) between heterogeneous domains is largely a tetra terminal (terminal of a company A region). In the case of transmission to a tetra client (terminal in the company B region), and when transmitted from a tetra client to a tetra terminal can be divided.

In the case of transmission from the tetra terminal to the tetra client, the SDS message to be sent is prepared as shown in Table 1 below and transmitted to the data linking device, and the data linking device checks the receiver of the received SDS message and determines the exchange to send the message. Change the address (see Table 2) and send.

SDS-TL Header Sender Tetra terminal (the A company area) receiver Tetra linkage SDS-TL data Data internal address (forward address) Tetra client (B company area) data Data to actually pass

SDS-TL Header Sender Tetra linkage receiver Tetra client (B company area) SDS-TL data Data internal address (forward address) Tetra terminal (the A company area) data Data to actually pass

When transmitting from the Tetra client to the Tetra terminal, the SDS message to be sent is prepared as shown in Table 3 below and transmitted to the data linking device. The data linking device checks the receiver of the received SDS message and determines the exchange to send the message. Change the address (see Table 4) and send.

SDS-TL Header Sender Tetra client (B company area) receiver Tetra linkage SDS-TL data Data internal address (forward address) Tetra terminal (the A company area) data Data to actually pass

SDS-TL Header Sender Tetra linkage receiver Tetra terminal (the A company area) SDS-TL data Data internal address (forward address) Tetra client (B company area) data Data to actually pass

In addition, referring to Table 5 below, the address conversion within the data based on the associated device processing may be referred to FIG. 3 below.

The error code table 1322 manages an error of a message, and the logging module 1326 can output internal information as a server program without a separate output device, and can be used for various purposes according to the Internet standard syslog format (RFC3164). Application is possible.

In operation S120, the message transmitted to the company A exchange receiving module 1310 is converted into a common format message by the company A message conversion module 1312, and then transmitted to the tetra message receiving module 1318 (S130).

In addition, the tetra message receiving module 1318 determines a direction to route the received common format message and converts a message of a manufacturer (company B) to transmit a message using the tetra message transmitting module 1324 as a medium (S140). The module 1334 transmits the data to the module 1334.

The company B message conversion module 1334 converts the common format message into the company B message module and transmits the message to the company B message transmission module 1336, and the company B message transmission module 1336 sends a message through a terminal mobility support method. To transmit (S160).

The terminal mobility support method of the tetra-linked device includes a broadcasting method or a tracking method of air traffic information, and when the broadcast method is used, the terminal mobility information is not provided by a tetra exchange (A switch). When a message is sent to a mobile terminal (terminal that uses company B's exchange) from a tetra linkage device, the message is sent to all connected exchanges, and each exchange transfers a message if the terminal is connected to itself. If not, ignore the message.

The mobility information tracking method receives an event from the exchange every time there is a registration / deregistration of the terminal in the tetra-linked device, and forms a table based on the event (see Table 6 below). When sending a message, the ISSI of the receiver's terminal is compared with the ISSI of this table, and if it matches, the message is sent to the corresponding exchange by referring to the connected exchange. If the ISSI is not registered in the table, the message is sent to the exchange designated as the default.

The mobility information tracking method can save traffic compared to the broadcasting method, but currently the broadcasting method is used because all the tetra exchanges cannot support the function. The mobility information tracking method may be implemented.

ISSI Connected exchange 10001 System A 10002 System B 10003 System C … … … …

The message transmitted from the company B message transmitting module 1336 is transmitted to the final receiving tetra client 1500 through the company B external tetra interworking server 1400 (S170).

In step S100 to S170, the terminal using the A company exchange may transmit a message to the terminal (client) using the B company exchange which is different from each other.

The format conversion method and the address conversion method of the message for transmission may refer to FIGS. 2A to 3.

2A is a flowchart illustrating a message format method of a tetra linkage device according to an embodiment of the present invention.

Referring to FIG. 2A, a message is converted into a message of a corresponding system format when retransmitted after a message is converted into a message of a common format in consideration of future expansion. When the message is converted, the message may be converted according to a mapping table in a common format (see FIG. 2B).

In addition, the sender may request a delivery report of the message sent by the sender. In this case, the transmission of the message is recognized only when the sender receives the report. Will be sent to the original sender.

3 is a diagram illustrating an address conversion method of a tetra linkage device according to an embodiment of the present invention.

Referring to FIG. 3, it is a diagram illustrating a packet of a data message, and it can be seen that a transceiver address of a header part of a packet, a forward address, and data are included in a data part.

Referring to the figure, when sending a message from one node of tetra network A to a node in tetra network B, if the destination is designated as network B, the exchange on the network A side does not recognize the address, so when sending a message The node assigns the recipient address to the Tetra associated device and sends the final recipient address in the Forward Address column to receive the message.

The transmitted message is transmitted to a tetra linkage device which is a recipient address, and the tetra linkage device converts a tetra network type A tetra message into a message of a common format while replacing a sender address with a forward address, a receiver address with a sender address, and a forward address with a receiver. Copy it to the address line and send it.

In this case, since the recipient address is written as an address in the tetra network B, the exchange in the network B may receive a message, determine the address, and send the message to the client.

As described above, it has been described with reference to a preferred embodiment of the present invention, but those skilled in the art various modifications and changes of the present invention without departing from the spirit and scope of the invention described in the claims below I can understand that you can.

1 is a view showing a data linkage method using a linkage device in a heterogeneous tetra-system according to an embodiment of the present invention.

2A is a flowchart illustrating a message format method of a tetra linkage device according to an embodiment of the present invention.

2B is a diagram illustrating a SDS message item mapping method of a tetra-linker according to an embodiment of the present invention.

3 is a view showing an address conversion method of a tetra-linked device according to an embodiment of the present invention.

             <Explanation of symbols for the main parts of the drawings>

1000: Terminal A Company 1100: A Switchboard

1200: A company external interworking server 1300: Tetra linkage device

1310: Company A message receiving module

1312, 1332: Module for converting received messages into common format messages

1314, 1334 module for converting common format messages to received messages

1316: Company A message sending module 1318: Tetra message receiving module

1320: routing module 1322: error code module

1324: tetra message transmission module 1326: log recording module

1330: Company B message receiving module 1336: Company B message sending module

1400: Company B external interworking server 1500: Company B tetra client

Claims (5)

In the data linkage method of a heterogeneous tetra system comprising a first exchange mediating a message transmission between a sender and a tetra linkage device, and a second exchange mediate a message transmission between a receiver and a tetra linkage device, Registering, by the tetra-linker, its address (ISSI) with at least one exchange; Sending a sender's message from the first exchange to the tetra linkage device; And Converting the received message into a common format message and transmitting the same; Data linkage method of heterogeneous tetra-system comprising a. The method of claim 1, The format of the message of the first exchange is to set the sender address to the address of the first exchange, to set the recipient address to the address of the tetra-association device (ISSI), and to forward the message to the second exchange. The data connection method of the heterogeneous tetra system, characterized in that the message set to the address of. The method of claim 1, The common format message may be configured to change a sender address of a message received at the first exchange to an address (ISSI) of a tetra-association device, change a recipient address to an address of the second exchange, and change a forward address of the first exchange. A data linking method of heterogeneous tetra-system, characterized in that the message is changed to an address. The method of claim 1, In the converting into the common format message and transmitting the data, the data transmission method of the heterogeneous tetra system, characterized in that the transmission by a broadcast method or a mobility information tracking method. In the heterogeneous tetrasystem linkage system for connecting heterogeneous exchangers on a tetra network using the heterogeneous tetrasystem data linkage method of any one of claims 1 to 4, One or more exchanges connected with the sender or receiver terminals to transmit or receive messages; A tetra linkage device that registers its own address (ISSI) with the one or more exchanges and receives a message transmitted from the exchange; And A tetra interworking server that mediates the transmission or reception of messages between the exchange and the tetra linkage device; Including, The tetra linkage device, A message transmission / reception module capable of transmitting or receiving a message with the exchange via the tetra interworking server; A common format message conversion module for converting a message transmitted from the exchange into a predetermined common format message or converting the common format message into a message for external transmission of the tetra linkage device; A common format message transmission / reception module capable of transmitting or receiving the common format message; And And a routing module configured to determine a direction to be routed by the common format message transmission / reception module.

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