KR100198746B1 - Traslation method for numbering in the satellite communication system - Google Patents

Abstract

The present invention relates to a number translation method in a satellite communication system for reducing the throughput of a number translation processor by separately recording a translation result data for a high frequency calling number in a predetermined database. A satellite communication system for providing a communication function to the subscriber by combining a plurality of base stations through a satellite; When the terrestrial subscriber's area code and station number data are received from the calling subscriber, a translation database search step of searching the translation database based on the received data, and if the terminator's area code and station number information does not exist in the translation database, Area number and station number translation request step that requires number translation by number translation processor, Translation data recording step of recording area number and station number translation result inputted from number translation processor, When called party information is received from calling subscriber Calling number translation request step for requesting number translation for this information by number translation processor and call processing based on the called number translation result and the area code and station number translation result when receiving number translation result is received. Characterized in that it comprises a processing step.

Description

Number Translation Method in Satellite Communication System

1 is an overall system configuration for explaining the outline of a general satellite communication system.

Figure 2 is a block diagram for explaining the hardware number translation method in a satellite communication system according to an embodiment of the present invention.

3 is a flowchart illustrating a number translation method in a satellite communication system according to an embodiment of the present invention.

* Brief description of the main parts of the drawing

1: satellite 2: central control station

3A, 3B: base station 11A, 11B: switchboard

12A, 12B: Telephone 13A, 13B: Data Terminal

14A, 14B: Facsimile

60: call processing processor 61: area code and station number processing unit

62: translation database 63: called party processing unit

70: number translation processor 71: area code and station translation processing unit

72: called party translation processing unit

[Purpose of invention]

[Technical field to which the invention belongs and the prior art in that field]

[Configuration and Function of Invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication system using satellites. In particular, a number translation method in a satellite communication system for reducing the throughput of a number translation processor by separately recording translation result data for a high frequency calling number in a predetermined database. It is about.

At present, satellite communication, which allows subscribers who are located at remote sites to make calls through satellites, is becoming increasingly common. Such satellite communication is mainly required for long distance communication between countries because it does not require a separate signal line for a call. It is usefully used as a communication method in a mountainous country like Korea.

In the satellite communication, a pre-assignment multiple access (PAMA) method of allocating communication channels for each subscriber before a predetermined time in accordance with the channel assignment method and a DAMA (Demand Assignment Multiple) for allocating communication channels according to a subscriber's request. Access) method, in general, the DAMA method for voice communication and the PAMA method for data communication are adopted in consideration of the cost and effectiveness of the communication channel.

1 is a system configuration diagram showing the overall configuration of a general satellite communication system according to the DAMA method.

In Fig. 1, reference numeral 1 is a satellite having a plurality of communication channels, 2 is a central control station for controlling the entire satellite communication system, and 3 (3A, 3B) is an exchanger (11A, 11B) or a telephone (12A, 12B). And interface functions for terminals such as data terminals 13A and 13B and facsimile 14A and 14B, such as a computer, and communication between the various terminals through data transmission and reception with the central control station 2. It provides a base station.

In FIG. 1, reference numeral S denotes a service channel for transmitting and receiving control data, and T denotes a traffic channel for transmitting and receiving data or voice.

In the above-described configuration, the central control station 2 transmits a control message through a service channel in a normal state and then, based on a response message sent from the base station 3, that is, communication It performs a polling function to check the available capacity or the utilization status of the communication channel. When there is a call request from a specific base station, for example, the base station 3A to the terminal of the base station 3B, it is determined whether the corresponding base station 3B is in a state in which communication is possible based on the information obtained in the polling process. In the case of the communicable state, the available traffic channel T of the satellite is allocated to both base stations 3A and 3B so that both base stations 3A and 3B can directly communicate with each other.

Subsequently, when the communication between the base stations 3A and 3B is terminated and the communication termination signal is applied through the service channel S from the base station 3A, which has been requested for communication, the central control station 2 is applied to both base stations. By executing the communication termination process, the traffic channel T which has been provided to both base stations 3A and 3B is released.

On the other hand, the base station 3 coupled with the subscriber sends a response message for the polling message to the central control station 2 when, for example, a polling message for the operation state of the base station 3 is received from the central control station 2. In addition, when there is a call request from the subscriber, a series of S-ALOHA packets including the call request message is generated and sent to the central control station 2. Subsequently, when a message such as a call permission message, an available SCPC channel unit 24, a communication channel, etc. is received from the central control station 2, the corresponding SCPC channel unit 24 and the communication channel are allocated to the caller directly to the subscriber. To provide communication.

When the base station 3 receives a call request from the subscriber to other subscribers in the country, the base station 3 avoids a series of message transmission / reception operations for the call request with the central control station 2 as described above, and sets the call itself. It provides the calling function of both subscribers. Further, when the call is terminated, the base station 3 transmits a call release message including the call start time, call end time, and communication type of the calling party to the central control station 2.

In addition, the base station (3) has a telephone data card (Telephone Data Card) that can be connected to the ground network subscriber (Trunk Interface Port) that can interoperate with the Public Switched Telephone Network (Trunk Interface Port) ) To provide mutual communication between the general telephone subscriber and the satellite communication subscriber.

At this time, when a satellite network subscriber attempts a call and calls a general telephone subscriber, a predetermined call processing processor is in charge of a series of call processing accordingly. First, the number translation for the called party is requested to a predetermined number translation processor. The call processing is performed after the called number is translated.

That is, when the call processing processor receives the called party's number, that is, the area code, the country code and the called number from the calling party, the call processing processor requests the number translation to the number translation processor, and then the number translation result from the number translation processor. When is input, a series of call processing is performed based on the result.

However, when a call request signal is received from a plurality of calling subscribers, the call processor must process a number translation request as well as a number translation request by a number translation processor in order to translate the number for the called party. Therefore, there is a problem that the number translation processor has a high throughput and is likely to be overloaded. This becomes more serious as the number of calls attempted increases.

[Technical problem to be achieved]

Accordingly, the present invention has been made in view of the above circumstances, and the throughput of the number translation processor by separately recording the translation result data for the high frequency calling number into a predetermined database that can be retrieved by the call processing processor. The purpose of the present invention is to provide a number translation method in a satellite communication system.

[Configuration and Function of Invention]

The number translation method in the satellite communication system according to the present invention for achieving the above object is a satellite communication system for providing a communication function to the subscriber by combining a plurality of base stations, each of which is combined with a plurality of subscribers through a satellite, from the calling subscriber If the recipient's area code and station number data is received, a translation database search step of searching the translation database based on the received data; and if the area code and station number information of the recipient does not exist in the translation database, the number translation processor Area number and station number requesting step for number translation request, Translation data recording step for recording area number and station number translation result inputted from number translation processor in translation database, When called party receives incoming caller information from subscriber Require number translation with number translation processor That is configured including a called party number translation and call processing step of performing said local number and call processing on the basis of station number translation when the called number translation feature request phase and, the called number translation is to be received.

That is, according to the above, the data for the called number frequently attempted to be stored is stored separately, and when the call is attempted, the called number of the data is first retrieved, thereby reducing the load of the number translation processor.

Next, an embodiment according to the present invention having the above configuration will be described.

2 is a block diagram illustrating a hardware translation of a number translation method in a satellite communication system according to an embodiment of the present invention.

In the figure, reference numeral 60 denotes a call processing processor for performing a predetermined call processing for a call generated from a subscriber, and 70 denotes a number translation processor for processing the number translation required from the call processing processor 60.

First, reference numeral 61 in the call processing processor 60 receives the area number and the station number of the called party called by the calling subscriber, and based on the received area number and the station number, Area number and station number processing unit for retrieving data and requesting the area number and station number translation of the called party to the number translation processor 70, 62 is a plurality of area number and station number data and translation result data for the area number and station number The translation database for storing the 63 is a called number processing unit that performs a series of call processing based on the translation result after requesting a number translation by the number translation processor 70 when receiving the called number.

In the number translation processor 70, 71 is an area code and a station code translation processing unit for performing a number translation for any area code and station number required by the area code and station code processor 61, and 72 is the called party. Called party translation processing unit for performing a number translation for the called party number required from the first processing unit (63).

Meanwhile, the reference code MPH [Main Pulse Modulation (HPC) Highway] is a data bus through which information data such as voice signals and data signals are transmitted and received, and the UPH (Utility PCM Highway) is a control bus through which control data is transmitted and received between the devices. .

Next, an embodiment according to the present invention having the above-described configuration will be described with reference to FIG. 3.

First, when the area code and station number processing unit 61 of the call processing processor 60 receives a predetermined area code and station number from the calling subscriber (step ST301), the area code and station number processing section 61 performs the area code and station number. On the basis of this, the translation result data stored in the translation database 62 is searched (step ST302).

At this time, if the area code and station number translation data of the translation database 62 for the area code and station number information input from the calling subscriber does not exist (step ST303), the area code and station number processing section 61 is The number translation is requested by outputting the station number information to the area code and the station number translation processing unit 71 of the number translation processor 70 (step ST304).

Subsequently, the area code and station code processor 61 waits for input of the translation result from the area code and station code translation processor 71, and when a predetermined translation result is received (step ST305), the area code and station code processor 61 searches whether there is an empty space in the translation database 62 for storing the area code and the station number translation result data (step ST306). At this time, if an empty space exists in the translation database 62, the translation result data of the area number and the station number is stored and the number of times the current call is attempted is recorded (step ST307).

On the other hand, if the empty space does not exist in step ST306, after deleting the data with the smallest number of times of use, the translation result data is recorded in the space where the data is deleted (step ST308).

Subsequently, the called party number processing unit 63 waits for the input of the called party number input from the calling party (ST309). When the called number is input from the calling party, the called number of the number translation processor 70 is input. By outputting to the translation processing unit 72, the called party number translation is requested (step ST310).

On the other hand, if the translation result data for the area code and the station number inputted from the calling subscriber in the translation database 62 in step ST303, increase the number of times of use of the corresponding data and add the translation result data to the called party number processing unit. Output to step 63 (step ST311).

In step ST310, the called party number processor 63 requests the called party number translation processor 72 of the number translation processor 70 to wait for the reception of the result signal (step ST312). At this time, when the called number translation data for the called number information is received, the called number processing unit 63 receives the received called number translation data and the area number and station number translation result data received from the area code and the station number processing unit 61. Call processing is performed based on.

Therefore, according to the above, when the call is attempted, the data for the called number that is frequently attempted is stored separately, and then the called number of the data is first retrieved, thereby reducing the load of the number translation processor.

In addition, this invention is not limited to the said Example, It can variously deform and implement within the range which does not deviate from the technical summary of this invention.

[Effects of the Invention]

As described above, according to the present invention, satellite communication for reducing the throughput of the number translation processor by separately recording the translation result data for the high frequency calling number into a predetermined database that can be searched by the call processor. The number translation method can be realized in the system.

Claims (1)

In a satellite communication system combining a plurality of base stations, each of which is combined with a plurality of subscribers, through a satellite to provide a subscriber with a communication function, when the terrestrial subscriber's area code and station number data are received from the calling subscriber, the received data is received. A translation database search step of searching the translation database on the basis of the translation, and if the area number and station number information of the called party does not exist in the translation database, Translation data recording step of recording the input area number and station number translation result in the translation database.When the called party information is received from the calling subscriber, the called party translation request step and the calling party request number translation for this information. When a translation result is received, this call forward translation result And a call processing step of performing a call processing based on the area code and the station number translation result.