KR100250618B1 - Other terminal operating apparatus of satellite communication system - Google Patents

Abstract

PURPOSE: An order line terminal operation device of satellite communication system is provided to enable general subscriber's call function so that a call can be made through the order line terminal operation device. CONSTITUTION: An order line terminal operation device of satellite communication system is composed of following units. A board controller(370), which controls all the devices for subscriber matching. The board controller(370) controls a time switching unit(376), which performs a switching between voice channels. Voice data is sent and received between the order line terminal operation device and the time switching unit(376). A CODEC(COder and DECoder,378g) performs digital to analog conversion when the voice data flows to a terminal and the CODEC(378g) performs analog to digital conversion when the voice data flows the other side. A detection unit(378a) checks on and off status of an operator terminal's hook. The first status register(378b) stores the on and off status detected by the detection unit. A dial detection unit(378c) detects dial signals produced by an operator manipulating the terminal. The second status register(378d) stores flag data produced in accordance with the data level generated at the dial detection unit(378c). A timer(378e) generates time data for producing interrupts. While a control unit(378f) communicates with the controller each period of time set by the timer in accordance with data established by the first and the second status register(378b,378d), the control unit(378f) controls subscriber's call and communication function of the operator terminal.

Description

Other Short Line Terminal Operating System of Satellite Communication System

The present invention relates to a satellite communication system, and more particularly, to an apparatus for operating a terminal device of a satellite communication system configured to provide a general subscriber calling function to make a call with an arbitrary subscriber in a communication network through the terminal device.

The communication service provided by the satellite communication system includes not only the earth stations under the earth with uplink and downlink transmission / reception facilities with satellites, but also the subscribers of the ground network (PSTN) connected to each earth station. The reason for providing such a wide area communication service is that each earth station of the satellite communication network has a trunk interface port (TIP) capable of matching ground subscribers therein. Because it is built.

On the other hand, Figure 1 is a block diagram showing the configuration of a base station of a general satellite communication system equipped with a terrestrial subscriber trunk receiving function, reference numeral 21 in Figure 1 is an uplink (uplink) signal and the downlink (link) for the satellite (1) (Down link) is an antenna for transmitting and receiving signals, 22 is an orthogonal mode transducer (OMT: 23) to separate and input and receive signals transmitted and received through the antenna 22 using the polarization property of the frequency, A low noise amplifier (LNA: Low Noise Amplifier) for low-noise amplifying downlink frequency signals of 12.25 to 12.75 GHz, input through the orthogonal mode converter 22, 24 applies the frequency signals applied through the low noise amplifier 23. For example, it is a frequency down converter (DC) which converts an intermediate frequency signal IF of 70 MHz.

In addition, reference numeral 25 separates and outputs the intermediate frequency signal IF applied from the frequency down converter 24 into a plurality of intermediate frequency signals, and also describes a Single Channel Per Carrier (SCP) channel unit to be described later. Intermediate frequency combiner / distributor (IF C / D: IF Combiner / Distributer) for combining and outputting the intermediate frequency signal applied from SCU: 61, and 61 (61 _{1 to} 61 ₃₂ ) are the intermediate frequency combiner / distributor. An SCPC channel unit 61 which demodulates, decodes and outputs an intermediate frequency signal applied from (25), or vice versa, which encodes and modulates a transmission signal to be transmitted to a central control station or another base station. This is for transmitting and receiving signals to and from a station or other station.

In addition, reference numeral 27 is a trunk interface port (Trunk Interface Port) for connecting the E1 trunk module and the like of the base station and the ground network (PSTN) switch, 32 is 70 M applied from the IF combination / distribution unit 25 A frequency upconverter (UC) for converting an IF signal of 로 to an microwave of 14.0 to 14.5 GHz to generate an uplink frequency signal, 33 is an uplink frequency signal output from the frequency upconverter 32. It is a high power amplifier (HPA) that amplifies.

Reference numeral 60 denotes a telephone data card for connecting a terminal such as a telephone, a data terminal, or a facsimile, and reference numeral 63 denotes the SCPC channel unit 61, a trunk interface port 27, and telephone data. A network controller which controls the card 60 to provide a predetermined communication channel to the subscriber, and generates and outputs message data for informing the central control station of the current status of the base station; It is designed to exchange control data with the above-described SCPC channel unit (SCU) 61, trunk interface port (TIP) 27, and telephone data card (TDC) 60 through UPH (65: Utility PCM Highway). In addition, traffic data communication with each module is performed through the MPH 66: Main PCM Highway.

That is, the conventional trunk interface port (TIP) 27 having the above configuration is provided with a module for accommodating the ground network (PSTN) subscriber, so that the ground network subscriber is controlled by the network control unit 63. A data card (TDC) 60 subscriber or SCPC channel unit 61 can communicate with a subscriber of another base station.

On the other hand, the trunk interface port (TIP) is provided with a tapping board, which is a dedicated communication line between network operators for maintenance of the satellite communication network, the conventional tabbing board line with a specific earth station to be established at the time of system design There is a problem that the operator cannot call other subscribers except the operator of the designated country because it is limited to 1: 1 dedicated line.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a telecommunication terminal operating apparatus of a satellite communication system, which provides a general subscriber calling function to make a call with an arbitrary subscriber in a communication network through the other circuit connecting terminal. There is this.

1 is a block diagram schematically showing a configuration of a base station in a general satellite communication system.

2 is a block diagram schematically showing the configuration of a base station of a satellite communication system equipped with a function of operating a pruning line terminal according to an embodiment of the present invention.

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

21: antenna, 22: orthogonal mode converter,

23: low noise amplifier, 24: frequency down converter,

25: intermediate frequency combination / distribution, 27,37: trunk interface port,

32: frequency up converter, 33: high power amplifier,

60: telephone data card, 61: SCPC channel unit,

63: network control unit, 65: UPH (Utility PCM Highway),

66: MPH (Main PCM Highway), 370: Board Controller,

371: bus interface, 372: E1 trunk matching,

373: frame reconstruction unit, 374: CRC inspection unit,

375: access time adjustment unit, 376: time switching unit,

377: terminal, 378: other short-terminal terminal connection,

378a: hook detection unit, 378b: first status register,

378c: dial detection section, 378d: second status register,

378e: timer, 378f: controller,

378g: codec-decoder.

The apparatus for operating a terminal line of a satellite communication system according to the present invention for realizing the above object is a ground network subscriber matching apparatus of a satellite communication system equipped with a terminal function for connecting a terminal line operator. A controller for controlling, a time switching unit that performs switching between voice channels according to the control of the controller, and D / A conversion is performed on the terminal side for voice data transmitted and received between the other short-circuit operator terminal and the time switching unit. In the opposite direction, a codec for performing A / D conversion, a hook detection unit for detecting a hook on / off state of the operator terminal, and a first state for storing and setting corresponding flag data according to the hook state detected by the hook detection unit. Register, a dial detector for detecting a dial signal generated by an operator operating a terminal; A second status register for storing and setting corresponding flag data according to the data level detected by the ear detection unit, a timer for generating and outputting predetermined time data for interrupt generation, and data set in the first and second registers. And a controller for communicating with the controller every predetermined time period counted by the timer and controlling a random subscriber call and a call function for the operator terminal.

That is, according to the present invention having the above-described configuration, it is possible to realize a pruning line terminal operating apparatus of a satellite communication system which provides a general subscriber calling function to make a call with an arbitrary subscriber in a communication network through the pitting line connecting terminal.

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

FIG. 2 is a block diagram schematically showing the configuration of a base station of a satellite communication system equipped with a rudder wire terminal operating function according to an embodiment of the present invention, in which components substantially perform the same functions as those shown in FIG. The same reference numerals are used, and detailed description thereof will be omitted.

In FIG. 2, reference numeral 37 denotes a trunk interface port (TIP) according to the present invention. The configuration thereof is as follows.

Reference numeral 370 denotes a board controller for controlling the operation of the trunk interface port (TIP) 37, and 371 denotes the telephone data card (TDC) 60 and the SCPC channel unit through the UPH 65 and the MPH 66. (SCU) 61 and a bus interface for communicating with the network control unit 63.

Reference numeral 372 denotes an E1 trunk matcher for matching E1 trunks of the ground network, and 373 selects control data for CRC checking from among 32 channel audio data applied through the E1 trunk matcher 372. And a frame reconstruction unit 374 for reconstructing the multiframe using only complete voice data, and 374 is a CRC inspection unit for performing CRC error checking based on the CRC check control data extracted from the frame reconstruction unit 373.

Reference numeral 375 denotes an access time adjusting unit that performs data transmission time adjustment in consideration of a change in distance between the satellite body and the earth station under control of the board controller 370, and 376 denotes a control signal from the board controller 370. Accordingly, the time switching unit 377 performing the switching operation between voice channels according to the switching function is a terminal to which the operator is connected for maintenance of the system.

On the other hand, reference numeral 378 denotes a mating line terminal connection part for system connection with respect to the operator terminal 377 connected to the trunk interface port (TIP) 37, and the mating line terminal connection part 378 is a terminal 377 of the terminal 377. The hook detection unit 378a for detecting the hook on / off state, the first state register 378b for storing and setting corresponding flag data according to the hook state detected by the hook detection unit 378a, and the operator 377. A dial detection unit 378c for detecting a dial pulse DP or DTMF signal generated by operating a second state register for storing and setting flag data corresponding to the data level detected by the dial detection unit 378c ( 378d), a timer 378e for generating and outputting predetermined time data for generating an interrupt, a controller 378f for controlling the overall apparatus of the short circuit terminal connection unit 378, and the short circuit terminal 377; Codec for performing D / A (digital-analog) conversion to the terminal 377 for voice data coming and going between the time switching unit 376 and A / D (analog-digital) conversion in the opposite direction. (CODEC; coder-decoder).

Next, the operation of the device having the above configuration will be described.

When the operator switches the terminal to the off-hook state while the operator connects the operator terminal 377 to a terminal connection modular jack (not shown) provided in a predetermined portion inside the trunk interface port 37, the hook detection unit 378a. Detects this and stores and sets the flag data corresponding to the off-hook status level in the first status register 378b.

Meanwhile, the controller 378f retrieves the data level of the first status register 378b every predetermined time counted by the timer 378e, for example, 2 [msec] periods, and notifies the board controller 370 of the operator level to notify the board controller 370 of the operator terminal. Report off-hook status.

Subsequently, when an operator performs dialing by operating a button key of the terminal 377, the dial detector 378c detects a dialing signal output from the terminal 377, and the dial is detected within the dial detector 378c. A pulse DP and a DTMF signal detection circuit are provided, respectively, so that the dial pulse DP is detected when the operator terminal 377 is a mechanical type, and the DTMF signal is detected by an electronic type.

The dial detector 378c stores and sets the flag data corresponding to the dialing signal detected by the terminal 377 in the second status register 378d. The controller 378f performs the timer 378e in the same manner as when the hook is detected. It is reported to the board controller 370 every 2 [msec] periods counted by.

As a result, the board controller 370 transmits call setting control data to the network controller 63 through the bus interface 371 based on the dialing data applied from the controller 378f. By being transmitted to the network control unit 63 through the UPH 65, a call path with another base station subscriber is established through the telephone data card (TDC) 60 subscriber or the SCPC channel unit (SCU) 61.

On the other hand, since the operator's voice input through the pruning line terminal 377 is an analog signal, the operator's voice is converted into digital data by the codec 378g, and is transmitted to the other party. The audio data in the form is converted into an analog signal by this codec 378g and transmitted to the operator terminal 377 side, whereby a voice call is executed.

That is, according to the embodiment, it is possible to talk to any subscriber in the communication network through the other line connection terminal.

On the other hand, the present invention is not limited to the above embodiments and can be modified in various ways without departing from the technical gist of the present invention.

As described above, according to the present invention, it is possible to realize the apparatus for operating a short-circuit terminal of a satellite communication system, which provides a general subscriber calling function to make a call with an arbitrary subscriber in a communication network through the other short-circuit connection terminal.

Claims (1)

1. A terrestrial network subscriber matching device of a satellite communication system having a terminal connection function of another short circuit operator, comprising: a controller for controlling the overall operation of a device for subscriber matching, and a time for performing switching operation between voice channels according to the control of the controller A codec for performing D / A conversion on the terminal side and A / D conversion on the opposite side of the voice data transmitted / received between the switching unit and the other short-term operator terminal and the time switching unit, and hook on / off of the operator terminal. A hook detection unit for detecting an off state, a first state register for storing and setting corresponding flag data according to the hook state detected by the hook detection unit, a dial detection unit for detecting a dial signal generated when an operator operates the terminal, and Storing and setting corresponding flag data according to the data level detected by the dial detection unit; 2 a state register, a timer for generating and outputting predetermined time data for generating an interrupt, and an arbitrary communication with the controller every predetermined time period counted by the timer based on the data set in the first and second registers. The other short-term line terminal operating apparatus of the satellite communication system, characterized in that comprising a control unit for controlling the subscriber calling and call function.

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