KR100262312B1 - Call accessing method using ip address - Google Patents

Abstract

PURPOSE: A call connection device using fixed preassigned IP(Internet Protocol) address of settop box of multimedia satellite communication system is provided to reduce delay time of IP address assignment after Internet connection by storing fixed preassigned IP address. CONSTITUTION: A multimedia satellite communication system has a district center, which connects with Internet physically, and a station, which connects with communication terminals physically. The station is composed of following units. A receive data processing unit recovers data received from the district center. An interface card connects the station with communication terminals. An IP address storage unit stores assigned IP address. A transmission data process unit modulates data, which will be transmitted to the district center. A station processor generates control message including IP address in accordance with call connection request supplied through the interface card. The station processor controls call requests to the district center in accordance with the generated control message. A station control unit generates control message including IP address when data requesting Internet connection is received from communication terminal. The district center is composed of following units. A router executes connection process with Internet. A transmission data process unit processes data, which will be transmitted to the station. A receive process unit processes signals received from the station. A database stores information about subscribers. An IP address assignment unit manages certain amount of IP addresses. A central control unit controls call connection between Internet and the station in base of call connection request from station.

Description

Call connection device using IP address fixedly assigned to set-top box in multimedia satellite communication system

The present invention relates to a multimedia satellite communication system, and more particularly, to store an IP address fixedly assigned to a subscriber in order to provide an Internet service in a set-top box, and to use it to attempt an Internet service. The present invention relates to a call connection device using an IP address fixedly assigned to a set-top box 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 Internet access and use the Internet service. In addition, from the point of view of the communication subscriber, there is a problem that the delay time before requesting an Internet connection and before the IP address is assigned can be a significant problem.

Accordingly, the present invention was created in view of the above circumstances, and stores an IP address fixedly assigned to a subscriber in order to provide an Internet service in a set-top box, and attempts to use the Internet service using the same. An object of the present invention is to provide a call access device using an IP address fixedly assigned to a set-top box in a multimedia satellite communication system.

1 is a system configuration for explaining the outline of the multimedia satellite communication system according to the present invention.

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 in FIG.

4 is a flowchart illustrating a call connection apparatus using an IP address fixedly assigned to a set-top box 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 present invention for realizing the above object, a call connection device using an IP address fixedly assigned to a set-top box includes a central station physically coupled to the Internet, and a terminal station physically coupled to the communication terminal. In a multimedia satellite communication system; The terminal station includes a reception data processing unit for restoring a signal received from the central station, an interface card for connecting the terminal station and the communication terminal, an IP address storage unit for storing the assigned IP address, and transmission data for modulating data to be transmitted to the central station. A processing unit and a terminal station processor for generating a control message including an IP address according to a call connection request applied through the interface card and controlling a call connection to a central station based on the request message; A control message including an IP address is generated and controlled to be transmitted to the central station when the Internet connection request data is input, and the central station is a router for performing connection processing with the Internet, a transmission data processing apparatus for processing data to be transmitted to the terminal station; Receive data destination for processing signals received from the terminal station A central international fishery that controls the call connection between the Internet and the terminal station based on the call storing request from the terminal station, the database storing information on the device, the subscriber, the IP address allocating unit managing a certain number of IP addresses. Characterized in that configured to include.

According to the above description, since the IP address is stored in the set-top box and attempted 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. The system load of the system can be reduced.

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

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

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.

That is, 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.

Meanwhile, the set top box 4 receives the TS packet transmitted from the central station 1 and provides multimedia data to the personal computer. 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.

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 PID, frequency data and CDMA code data that can be allocated to each set-top box 4, and charging information for subscribers, and 16 is a predetermined number of IP addresses. Is an IP address allocator for allocating an available IP address according to the request of the central international fisherman 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 language unit 11 accesses the IP address allocator 16 and receives an available IP address and transmits the received IP address to the set top box 4.

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

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 resultant data into intermediate frequency signals sequentially according to a predetermined transmission timing signal. An interface card that performs an interface with the computer 5, which converts an Ethernet packet applied from the STB control unit 43 into an IP packet and outputs the IP packet to the personal computer 5 or is applied from the personal computer 5. The IP packet is converted into an Ethernet packet and output to the STB control unit 43.

Reference numeral 46 denotes an IP address storage for storing an IP address fixedly assigned from the central station 1, and 47 is used to request access data for the central station 1, i.e., call connection for the central station 1; It is a data memory for storing CDMA codes and channel frequencies.

That is, 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 receiving data processing unit 42 so as to register the control PID from the central station 1. Control to receive the control data and traffic data transmitted. In addition, the transmission data processor 44 allocates a predetermined CDMA code and channel frequency allocated from the central station 1 to perform CDMA modulation and frequency modulation on data to be transmitted to the central station 1.

In addition, the STB control unit 43 stores the IP address allocated from the central station 1, and when a call connection request signal is input from the personal computer 5, generates and outputs a control message including the IP address. Done.

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; Implement an information service that provides 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.

When the access request for the Internet, that is, the call connection request, is input from the personal computer 5 in the above state (step A1), the STB control unit 43 inputs the subscriber information and the IP address input through the interface card 45. A predetermined control message is generated on the basis of the IP address fixedly assigned to the storage unit 46 and transmitted to the transmission data processing unit 44. The access data stored in the data memory 47 is transmitted to the transmission data processing unit ( 44, an access request is made to the central station 1 (step A2).

On the other hand, in the central station 1, when the control message sent from the set-top box 4 is input (step B1), the central international language unit 11 stores the subscriber IP and password included in the control message in the database ( By comparing with the subscriber information stored in 15), it is determined whether the subscriber who has been accessed currently is a legitimate subscriber (step B2).

At this time, if it is determined that the user is a legitimate subscriber (step B3), the central international fisherman 11 assembles the request message and outputs it to the router 10 (step B4), and searches the database 15 to make it available. It is determined whether the PID exists and the control PID, the traffic PID, the channel frequency, and the CDMA code are assigned to the set top box 4 (step B5). At this time, the router 10 transmits a message to the Internet using a contracted routing protocol.

On the other hand, in the set top box 4, the STB control unit 43 sets the control PID and the traffic PID assigned from the central station 1 to the reception data processing unit 42, and the CDMA assigned from the central station 1. Code and channel frequency data are set in the transmission data processing section 44. Then, the personal computer 5 is notified of the successful connection through the interface card 45 (step A3).

On the other hand, when the access release request is input from the personal computer 5 (step A4), the STB control unit 43 generates a call release message based on this and transmits it to the central station 1 (step A5). Then, the central station 1 recovers the control PID and the traffic PID allocated to the set top box 4 based on the input control message (step B6).

Therefore, according to the above embodiment, since the IP address is stored in the set-top box and attempted to connect to the Internet based on this, it is possible to shorten the call connection time such as requesting allocation of the IP address from the central station each time. The system load of the personal communication terminal 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 set-top box stores an IP address fixedly assigned to a subscriber in order to provide an Internet service, and then uses the set-top in a multimedia satellite communication system. The call connection device using the IP address fixedly assigned to the box can be realized.

Claims (1)

A multimedia satellite communication system comprising a central station physically coupled to the Internet and a terminal station physically coupled to a communication terminal; The terminal station includes a reception data processing unit for restoring a signal received from the central station, an interface card for connecting the terminal station and the communication terminal, an IP address storage unit for storing the assigned IP address, and transmission data for modulating data to be transmitted to the central station. A processing unit and a terminal station processor for generating a control message including an IP address according to a call connection request applied through the interface card and controlling a call connection to a central station based on the request message; When the internet connection request data is input, the control message including the IP address is generated and transmitted to the central station. The central station includes a router for performing connection processing with the Internet, a transmission data processing apparatus for processing data to be transmitted to a terminal station, a reception data processing apparatus for processing a signal received from a terminal station, and data for storing information about a communication subscriber. Multimedia satellite communication comprising a base, an IP address allocating unit for managing a certain number of IP addresses, and a central international fisherman controlling the call connection between the Internet and the terminal station based on the call connection request transmitted from the terminal station. Call connection device using IP address fixed to set-top box in system.

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