KR19990062307A - Call connection method and device using fixed IP address assigned to communication terminal in multimedia satellite communication system - Google Patents

Abstract

The present invention stores a fixed IP address assigned to the communication terminal for providing the Internet service, and fixed assignment to the communication terminal in the multimedia satellite communication system that can be easily used by using the Internet service The present invention relates to a call connection method using an IP address and an apparatus thereof.

The present invention provides a multimedia satellite communication system for providing a multimedia service to a subscriber having a central station physically coupled to the Internet, and a terminal station physically coupled to a communication terminal; When the subscriber requests a call connection, the communication terminal outputs a call connection request signal including a local IP address and a destination IP address to the terminal station, and access to the central station based on the call connection request signal inputted by the terminal station. Generating a message and outputting it to the central station, assigning channel information available to the terminal station only by a legitimate subscriber based on the access message, and setting a data transmission / reception environment based on the channel information allocated to the terminal station. Characterized in that configured to include.

Therefore, according to the present invention, by attempting to access the Internet based on the IP address in the personal computer, the call connection time such as being assigned an IP address every time can be shortened, and the load on the set-top box and the central station can be reduced.

Description

Call connection method and device using fixed IP address assigned to communication terminal in multimedia satellite communication system

The present invention relates to a multimedia satellite communication system, and more particularly, to store an IP address fixedly allocated to provide an internet service in a communication terminal, and to use the multimedia to facilitate an internet service. The present invention relates to a call connection method and an apparatus using a fixed IP address assigned to a communication terminal in a satellite communication system.

At present, wireless communication technology has been rapidly developed, and a wireless communication system that enables voice and data communication with a counterpart through a wireless network is becoming common. Accordingly, mobile communication systems and personal communication systems that allow communication subscribers to perform communication while moving are widely used. In addition, a method of connecting a general home communication device with an existing Public Switched Telephone Network (PSTN) network through a WLL (Wireless Local Loop) system or a satellite communication system is becoming more common.

In particular, in the case of a satellite communication system, there is an advantage of enabling ultra-long distance communication such as communication between countries without providing a separate communication line. Therefore, a satellite broadcasting system has been developed and distributed to directly receive satellite broadcasting in a general home through a set-top box by using the advantages of the satellite communication system. In addition, research to utilize mobile communication devices or personal communication devices using satellite communication is also rapidly being conducted.

Meanwhile, the Internet network, a global network based on a transport control protocol / Internet protocol (TCP / IP) communication method, has been established. Unlike the existing PSTN network, such an internet network is based on data packet transmission, so that a plurality of subscribers can use a single communication line in common, thereby significantly reducing communication costs and providing multimedia services. In addition to the construction of the Internet network, data communication using a personal computer has been activated.

Recently, a multimedia satellite communication system capable of providing Internet service using a satellite communication system by combining a satellite communication system and an internet network has been proposed. Through the multimedia satellite communication system, a subscriber can access the Internet or various multimedia services, for example, It is possible to use home banking or home shopping.

However, in the multimedia satellite communication system, each subscriber must have his or her own IP address in order to request an Internet connection and use the Internet service. The problem is that the load is increased, and from the point of view of the communication subscriber, there is a problem that the delay time between the request for the Internet connection and the time before the IP address is assigned can be a significant problem.

Accordingly, the present invention was created in view of the above-described circumstances, and stores an IP address fixedly allocated to provide an Internet service in a communication terminal, thereby making it possible to easily attempt an Internet service using the same. An object of the present invention is to provide a call connection method and apparatus using a fixed IP address assigned to a communication terminal in a multimedia satellite communication system.

1 is a system configuration for explaining an overview of a multimedia satellite communication system to which the present invention is applied.

FIG. 2 is a block diagram showing the configuration of the central station 1 in FIG.

3 is a block diagram showing the configuration of the set-top box 4 and the personal computer 5 in FIG.

4 is a flowchart illustrating a call connection method using an IP address fixedly assigned to a communication terminal in a multimedia satellite communication system according to the present invention.

* Brief description of the main parts of the drawing

1: central station 2, 3: antenna

4: set-top box 5: personal computer

6: satellite

10: Router 11: Central International Fisherman

12: transmission data processing device 13: RF device

14: receiving data processing device 15: database

16: IP address assignment unit

In the multimedia satellite communication system according to the first aspect of the present invention for realizing the above object, a call connection method using an IP address fixedly assigned to a communication terminal includes a central station physically coupled to the Internet, and a terminal physically coupled to the communication terminal. A multimedia satellite communication system having a station and providing a multimedia service to a subscriber; When the subscriber requests a call connection, the communication terminal outputs a call connection request signal including a local IP address and a destination IP address to the terminal station, and access to the central station based on the call connection request signal inputted by the terminal station. Generating a message and outputting it to the central station, assigning channel information available to the terminal station only by a legitimate subscriber based on the access message, and setting a data transmission / reception environment based on the channel information allocated to the terminal station. Characterized in that configured to include.

In addition, in the multimedia satellite communication system according to the second aspect of the present invention, a call connection apparatus using an IP address fixedly assigned to a communication terminal includes a central station physically coupled to the Internet, and a terminal station physically coupled to the communication terminal. A multimedia satellite communication system for providing a multimedia service to a subscriber; The communication terminal includes an IP address storage unit for storing the allocated local IP address, a PC control unit in charge of overall control of the communication terminal, and the terminal station includes a reception data processing unit for restoring a signal received from the central station; A transmission data processing unit for modulating the data to be sent to the central station, a terminal international fisherman in charge of the path control between the communication terminal and the central station, wherein the central station processes a router for performing connection processing with the Internet and data to be transmitted to the terminal station A transmission data processing device for processing, a reception data processing device for processing a signal received from a terminal station, a database for storing information on subscribers, an IP address for managing a predetermined number of IP addresses and allocating an available IP address on demand. It is responsible for allocating unit, system control and path control between internet and terminal station. Including core International fisherman characterized in that configured.

According to the above, since the communication terminal retains the IP address and attempts to connect to the Internet based on this, it is possible to shorten the call connection time such as requesting the allocation of the IP address from the central station each time. This reduces the load on the set-top box that interfaces.

Hereinafter, embodiments according to the present invention will be described.

1 is a block diagram showing the overall system configuration of a multimedia satellite communication system to which the present invention is applied.

In FIG. 1, reference numeral 1 denotes a central station connected to the Internet, which provides various multimedia services to a plurality of terminal stations, and performs overall network operation management and control functions, and 2 denotes a central station antenna.

Reference numeral 3 is a terminal station antenna, 4 is a set-top box as a terminal station providing multimedia services to a general subscriber, 5 is a personal computer as a terminal for a user to execute multimedia communication, and 6 is a satellite.

In the multimedia satellite communication system, the central station 1 is coupled to the Internet, and transmits and receives various data with the Internet through an IP packet.

That is, the central station 1 generates, for example, MPEG-2 Transport Stream (TS) packets (hereinafter, abbreviated as TS packets) based on IP packets received from the Internet, and sets the generated TS packets through the TDM scheme. It is sent to the box (4). Then, the IP packet is generated based on the CDMA modulated data received from the set top box 4 and then transmitted to the Internet.

The set top box 4 receives the TS packet transmitted from the central station 1 and provides the multimedia data to the personal computer (or communication terminal) 5. Here, the reception of the TS packet is performed based on a PID (Packet Identifier), which is assigned by the central station 1 at the start of service. The set top box 4 transmits the IP packet data input from the personal computer 5 to the central station 1 through CDMA modulation and frequency modulation.

On the other hand, each personal computer 5 has a unique local IP address. The personal computer 5 has a pre-assigned local IP address. The local IP address is output to the set top box 4.

2 is a block diagram showing the configuration of the central station 1 described above.

In FIG. 2, reference numeral 10 denotes a router that performs connection processing between the central station 1 and the Internet, which converts an IP packet input from the Internet into data of an Ethernet frame to the central international fisherman 10. As shown in FIG. It outputs and converts the Ethernet frame inputted from the central international fishery unit 10 into an IP packet and routes it to the Internet.

In addition, reference numeral 11 denotes a central international fisherman that controls the entire apparatus of the central station 1, and 12 denotes a TS packet based on data input through the central international fisherman 11, for example, QPSK modulation (Quadrature). Phase Shift Keying Modulation) is a transmission data processing device for generating and outputting an intermediate frequency signal of 70 MHz, for example, and 13 denotes an antenna for frequency up-conversion and high output of the intermediate frequency signal output from the transmission data processing device 12. 2) and a high frequency signal received through the antenna (2) frequency down conversion and low noise amplified RF device for outputting.

In addition, reference numeral 14 denotes a reception data processing device for generating original packet data by demodulating a frequency signal input from the RF device 13, which receives IP packet traffic data or control data from the set-top box 4. In this case, it is converted to the data of the Ethernet frame and output to the central international language unit (11).

In addition, reference numeral 15 is a database for storing channel information such as PID, frequency data, and CDMA code data, which can be allocated to each set-top box 4, and charging information for subscribers. An IP address assignment unit that manages a number of IP addresses and allocates IP addresses available to the personal computer 5 in accordance with the request of the central international language unit 11.

That is, in the central station having the above-described configuration, the frequency signal received from the set-top box 4 is subjected to a series of signal processing, and the original packet data is input to the central international fisherman 11, and the central international fisherman 11 If the packet data is analyzed and the traffic data is output to the router 10, and if the control data is to perform a series of control operations accordingly. That is, when the control message requesting a call connection, the central international fisheries unit 11 accesses the IP address allocator 16 to receive the available IP address and transmits the control to the set-top box 4 as well as the set-top box. Channel information to be used in (4) is transmitted.

3 is a block diagram showing the configuration of the set-top box 4 in FIG.

In the drawing, reference numeral 41 denotes an RF device for converting a high frequency signal received from the central station 1 into frequency downconversion and low noise amplification, and for frequency upconverting and high power amplifying a required frequency signal. And a received data processor for demodulating the frequency signal output from the extracted TS packet.

In addition, reference numeral 43 is an STB control unit for controlling the overall operation of the set-top box 4, which converts the TS packet output from the received data processing unit 42 into an IP packet to be described later PC interface card 45 In addition to the output, the CDMA data processing is performed on the data input from the PC interface card 45 and transmitted to the central station 1. In addition, when the destination IP address and the local IP address are input from the personal computer 5 together with the call connection request signal, the STB control unit 43 assembles and outputs the control message accordingly.

Reference numeral 44 denotes a transmission data processing unit for performing CDMA modulation on the transmission data input from the STB control unit 43 and converting the converted data into an intermediate frequency signal. 45 denotes an interface with the personal computer 5. A PC interface card, which converts an Ethernet packet applied from the STB control unit 43 into an IP packet and outputs it to the personal computer 5 or converts an IP packet applied from the personal computer 5 into an Ethernet packet. Output to the STB control unit 43.

Reference numeral 46 denotes a data memory for storing access data for the central station 1, that is, channel information such as a CDMA code and a channel frequency used when requesting a call connection to the central station 1.

In the set-top box 4 having the above-described configuration, the STB control unit 43 registers the control PID and the traffic PID assigned from the central station 1 to the reception data processing unit 42 to be transmitted from the central station 1. Control to receive the control data and traffic data. In addition, the STB control unit 43 assigns a predetermined CDMA code and channel frequency allocated from the central station 1 to the transmission data processing unit 44 to perform CDMA modulation and frequency modulation on data to be transmitted to the central station 1. This is sent to the central station (1).

Further, when the call connection request signal is input from the personal computer 5, the STB control unit 43 generates a predetermined call connection request control message including an incoming IP address and a local IP address, and generates the call request request message. Will output

In FIG. 3, reference numeral 51 denotes an STB interface card for interfacing the personal computer 5 and the set-top box 4, 52 denotes a PC control unit for performing overall control of the personal computer 5, and 53 and 54. The input device and output device 55 of the data unit as input / output means, respectively, are an IP address storage unit for storing a local IP address assigned to the central station 1.

In the personal computer 5 having the above-described configuration, the PC control unit 52 stores the incoming IP address and the IP address storage unit 55 when a call connection request is input through the input device 53. Combining the local IP address is output to the set-top box (4).

Next, the embodiment according to the present invention will be described in more detail.

First, in the central station 1, the central international fisherman 11 transmits a variety of information required when the set-top box 4 requests access to the central station 1, for example, a control message to the central station 1; An information service is provided to provide channel information such as CDMA code and channel frequency data.

On the other hand, in the set top box 4, first, the STB control unit 43 registers the PID for information service recorded in the data memory 47 to the reception data processing unit 42, and has been transmitted from the central station 1. When the service information is received by the reception data processing unit 42 and input to the STB control unit 43, the STB control unit 43 requests a call connection for the access data received through the information service, that is, the central station 1; The CDMA code data and channel frequency data used are stored in the data memory 47.

First, in the personal computer 5, when the Internet connection request is inputted by the subscriber in the above state through the input device 53, the PC control unit 52 and the destination IP address input through the input device 53 The local IP address stored in the IP address storage unit 55 is combined and outputted to the set top box 4 through the STB interface card 51 (step ST2).

Then, in the set top box 4, the call connection request signal output through the STB interface card 51 is input to the STB controller 43 through the PC interface card 45. At this time, the STB control unit 43 generates a predetermined control message based on the incoming destination IP address and the local IP address (step ST3). Subsequently, the STB control unit 43 transmits the generated control message to the transmission data processing unit 44 and allocates the access information stored in the data memory 47 to the transmission data processing unit 44 so that the central station 1 The access request is executed for the step (ST4 step).

Subsequently, in the central station 1, when the control message sent from the set-top box 4 is input, the central international fisherman 11 performs a verification operation on the control message (step ST5). That is, the central international fisheries 11 compares the transmitted subscriber IP and password with the subscriber information stored in the database 15 to determine whether the subscriber who is currently being accessed is a legitimate subscriber.

At this time, if it is determined that the subscriber is a legitimate subscriber, the central international fisherman 11 assembles the call request message and outputs it to the router 10 (step ST6), and searches the database 15 to present channel resources currently available. The control PID, the traffic PID, the channel frequency, and the CDMA code are assigned to the set-top box 4 (step ST7). At this time, the router 10 transmits a connection message to the Internet using the contracted routing protocol.

On the other hand, in the set-top box 4, after the STB control unit 43 transmits the call connection control message to the central station 1, the STB control unit 43 waits for reception of a success or failure message according to the call connection transmitted from the central station 1. Done.

At this time, when the message transmitted from the central station 1 is input through the RF device 41 and the reception data processing unit 42, the STB control unit 43 transmits the assigned control PID and traffic PID to the reception data processing unit 42. In addition, the call connection environment is set such that the CDMA code and channel frequency data allocated from the central station 1 are set in the transmission data processing section 44 (ST8 step). Then, the personal computer 5 outputs a predetermined message according to the successful call connection via the PC interface card 45 (step ST9).

Subsequently, in the personal computer 5, the PC controller 52 notifies the subscriber of the successful call connection through the output device 54 when the call connection success message is received through the STB interface card 51 (step ST10). ).

On the other hand, when the access release request is input from the personal computer 5, the STB control unit 43 generates a call release message based on this and transmits it to the central station 1. Then, the central station 1 recovers the control PID and the traffic PID assigned to the set top box 4 based on the input control message.

Therefore, according to the above embodiment, the IP address is stored in the personal computer, and the Internet connection is attempted based on this, thereby reducing the call connection time such as requesting allocation of the IP address to the central station each time and receiving the assignment. In addition, the system load of the set-top box and the load of the central station can be reduced.

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

As described above, according to the present invention, a local satellite address fixedly allocated to a subscriber in order to provide an Internet service is stored in a personal computer. In the system, a call connection method and an apparatus using a fixed IP address assigned to a communication terminal can be realized.

Claims (2)

A multimedia satellite communication system for providing a multimedia service to a subscriber, comprising a central station physically coupled to the Internet and a terminal station physically coupled to a communication terminal; If the subscriber requests a call connection, the communication terminal outputting a call connection request signal including a local IP address and a destination IP address to the terminal station; Generating, by the terminal station, an access message for the central station based on the incoming call connection request signal and outputting it to the central station; The central station assigning the channel information available to the terminal station only for the legitimate subscriber based on the access message; And a terminal station setting a data transmission / reception environment based on the assigned channel information. 10. A call connection method using a fixed IP address assigned to a communication terminal in a multimedia satellite communication system. A multimedia satellite communication system for providing a multimedia service to a subscriber, comprising a central station physically coupled to the Internet and a terminal station physically coupled to a communication terminal; The communication terminal includes an IP address storage unit for storing the allocated local IP address, a PC control unit in charge of overall control of the communication terminal, and the terminal station includes a reception data processing unit for restoring a signal received from the central station; A transmission data processing unit for modulating the data to be sent to the central station, a terminal international fisherman in charge of the path control between the communication terminal and the central station, wherein the central station processes a router for performing connection processing with the Internet and data to be transmitted to the terminal station A transmission data processing device for processing, a reception data processing device for processing a signal received from a terminal station, a database for storing information on subscribers, an IP address for managing a predetermined number of IP addresses and allocating an available IP address on demand. It is responsible for allocating unit, system control and path control between internet and terminal station. Sim to call connection apparatus using a fixed IP address assigned to the communication terminal in multimedia satellite communication system, characterized in that configured including International fisherman.