KR20000047236A - Received message processing method of central station in multimedia satellite communication system - Google Patents

Abstract

PURPOSE: A received message processing method of a central station in the multimedia satellite communication system is provided to process received message data rapidly by providing and storing priority for the received message data and processing the received message data according to provided priority. CONSTITUTION: An IP switch(10), connected with a DNS(Domain Name System) server(11), an E-mail server(12), a web server(13), a proxy server(14), an MSP(Multimedia Service Provider)(15) and a router(16), switches an IP(Internet Protocol) packet. The router(16) executes access processing between a central station and the internet. A transmitting data processing unit(17) processes transmitting data inputted from the IP switch(10) and, for example, generates MPEG-2 TS packets. A modulation unit(18) processes the TS packets output from the transmitting data processing unit(17) in QPSK modulation and outputs an intermediate frequency signal of 70 megahertz. An RF unit(19) carries out frequency up conversion and high power amplification for the intermediate frequency signal and outputs it to an antenna.

Description

Receiving Message Processing Method of Central Station in Multimedia Satellite Communication System

The present invention relates to a method for processing a received message of a central station in a multimedia satellite communication system. In particular, the present invention relates to receiving and storing received data by giving priority to message data received by the central station and processing the message data according to the priority. The present invention relates to a receiving message processing method of a central station in a multimedia satellite communication system that can be processed quickly.

1 is a block diagram showing the overall system configuration of a multimedia satellite communication system.

In FIG. 1, reference numeral 1 denotes a central station connected to the Internet, which provides various multimedia services to terminal stations, and performs overall network operation management and control functions. In addition, 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 perform multimedia communication, and 6 is a satellite. to be.

That is, in the multimedia satellite communication system having the above-described configuration, first, the central station 1 supplies various satellite resource information required when the set-top box 4 requests access to the central station 1, for example, the central station 1. An information service is provided to provide a CDMA code and channel frequency data for transmitting a control message and a PID for information service for common reception in all set-top boxes 4.

On the other hand, in the set-top box (4) stores the service information transmitted from the central station 1, that is, CDMA code data, channel frequency data, and information service PID used when requesting a call connection to the central station (1). do.

When the access request for the Internet, that is, the call connection request, is input from the personal computer 5 in the above-described state, the set-top box 4 receives the subscriber information input from the computer 5, namely, the subscriber ID, password, After generating a predetermined control message based on the subscriber address or the like, the access request is executed to the central station 1 by allocating CDMA code data and channel frequency data.

Subsequently, when the access request is input through the above-described process, the central station 1 first compares the subscriber's IP and password included in the control message with the subscriber's information to determine whether the current access request is a legitimate subscriber. do.

At this time, if it is determined that the user is a legitimate subscriber, the database is searched to determine whether there is a PID currently available to allocate the satellite resource, that is, the control PID, traffic PID, channel frequency, and CDMA code to the set-top box 4. do. At this time, the information service PID is used as the PID of the TS packet transmitted to the set top box 4.

In the set top box 4, the control PID and the traffic PID assigned by the central station 1 are set, and the CDMA code and channel frequency data transmitted from the central station 1 are allocated. Then, the personal computer 5 is informed that the call connection is successful.

Subsequently, when the IP packet for transmitting to the Internet from the personal computer 5 is input, the corresponding traffic data is transmitted to the central station 1, and when the central station 1 receives the traffic data from the set-top box 4, It is converted into an IP packet and sent to the Internet.

However, when the central station 1 receives the message data from the set-top box 4 as described above, when the received data is momentarily received in large amounts of data, the central station 1 simultaneously receives the received data. An error occurs due to a failure, or a large amount of message data can cause a load and cause an error in the system.

In addition, in the received data processing, an operation error or a processing speed is delayed due to the load generation as described above, thereby causing a problem of lowering the efficiency of system operation.

Accordingly, the present invention has been created in view of the above circumstances, and the priority is given to the message data received by the central station and stored therein, and the message data is processed in accordance with the given priority, so that the received data can be processed quickly. The purpose of the present invention is to provide a receiving message processing method of a central station in a multimedia satellite communication system.

1 is a block diagram showing the overall configuration of a multimedia satellite communication system.

Figure 2 is a block diagram showing the configuration of a central station 100 for executing a received message processing method in a multimedia satellite communication system according to an embodiment of the present invention.

3 is a flowchart illustrating a method of processing a received message of a central station in a multimedia satellite communication system according to an embodiment of the present invention.

*** Explanation of symbols for the main parts of the drawing ***

1: central station 2, 3: antenna

4: set top box 5: personal computer (PC)

6: satellite 10: IP switch

17: transmission data processing device 18: modulation device

19: RF device 20: demodulation device

21: CDMA receiving device 22: Receiving data processing device

23: central international language processor 24: network management system (NMS)

25: database 26: data memory

In the multimedia satellite communication system according to the present invention for realizing the above object, the receiving message processing method of the central station allocates satellite resources to the set-top box requiring access and makes a call connection, thereby receiving the message processing of the receiving station. A method, comprising: a message data receiving step of determining whether there is message data received from the set top box, a priority giving step of giving priority to the received message data, and sequentially receiving the given message message data And a sequential storage step of storing, a stored data reading step of sequentially reading the stored received message data, and a receiving message processing step of controlling transmission of the read data first.

Therefore, according to the present invention having the above-described configuration, even if a large amount of data is received by the central station, the received data is buffered and processed sequentially, thereby preventing congestion of data reception and processing the received data quickly.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

2 is a block diagram of a central station for explaining a communication restriction method using restriction timing in a multimedia satellite communication system according to an embodiment of the present invention.

In FIG. 2, reference numeral 100 denotes a central station for executing and controlling a subscriber account anti-theft method according to the present invention, 10 denotes an IP switch for switching an IP packet, and the IP switch 10 includes a DNS ( Domain Name System (11) server, E-mail server 12, Web (WEB) server 13, Proxy server 14, MSP (Multimedia Service Providder: 15), and Router (Router: 16) ) Will be combined. In this case, the MSP includes a home banking system, a home shopping system, a distance education system, a video conference system, and the like.

In particular, the router 16 executes connection processing between the central station 100 and the Internet, which converts an IP packet input from the Internet into the central station 100 into data of an Ethernet frame and converts the data from the central station 100 to the Internet. Ethernet frame sent to IP packet is converted into IP packet.

In the figure, reference numeral 17 denotes a transmission data processing apparatus for processing transmission data input from the IP switch 10 to generate, for example, an MPEG-2 TS packet, and 18 is output from the transmission data processing apparatus 16. A modulator for outputting an intermediate frequency signal of, for example, 70 MHz by performing quadrature phase shift keying (QPSK) modulation on TS packet data, and 19 converts the intermediate frequency signal outputted from the modulator 18 into frequency upconversion and high output amplification. It is an RF device for outputting to the antenna (2), the high-frequency signal received through the antenna (2) down-frequency conversion and low noise amplification output.

In the drawing, reference numeral 20 denotes a demodulation device for demodulating an intermediate frequency signal input from the RF device 19, and 21 denotes CDMA demodulation of CDMA modulation data input by frequency demodulation in the demodulation device 20. A CDMA receiving device for outputting packet data, 22 is a receiving data processing device for processing data input from the CDMA receiving device 21, wherein the receiving data processing device 22 is an IP packet data from the set-top box (4) If the control message is received or converted to the data of the Ethernet frame is input to the IP switch 10. In addition, the reception data processing device 22 converts, for example, 100 baseT, that is, 100 Mbps data input from the CDMA reception device 21 into data of 10 baseT, and inputs the data to the IP switch 10.

In the figure, reference numeral 23 controls the entire apparatus of the central station 100, prioritizes and stores the message data received through the IP switch 10, and reads the stored data according to the priority. 24 is a network management system for the system operator to operate and manage the entire satellite network, and 25 is a PID, frequency data, and CDMA code data that can be allocated to the set-top box 4. In addition to the storage, it is a database that stores the billing information for the subscriber.

Reference numeral 26 denotes a data memory in which received message data are sequentially stored according to the priority given by the central international language processor 23.

Next, the operation of the apparatus according to the present invention having the above-described configuration will be described with reference to the operation flowchart shown in FIG.

First, the central station 100 transmits CDMA codes, channel frequency data, and PID for transmitting control messages to various satellite resources required when the set-top box 4 requests access to the central station 100. The central international language processor 23 is assigned to the set-top box (4).

That is, an Ethernet frame including the CDMA code, channel frequency data, control PID, and traffic PID is generated and transmitted to the transmission data processing apparatus 17 through the IP switch 10.

Subsequently, the transmission data processing apparatus 17 converts the Ethernet frame transmitted from the IP switch 10 into an IP packet and converts it into a TS packet, and transmits the TS packet to the modulator 18 and the RF device 19. It is transmitted to the set-top box (4) through.

In the set top box 4, the CDMA code data and the channel frequency data transmitted from the central station 100 are received and stored, and the control PID and the traffic PID are registered in the apparatus.

Therefore, when satellite resources are allocated to the set-top box 4 as described above and the message data can be transmitted / received (step ST1), a control message or the like is transmitted from the set-top box 4. The control message sent from the set top box 4 is input to the demodulation device 20 through the RF device 19, and is input to the reception data processing device 22 through the CDMA receiving device 21. Then, the reception data processing apparatus 22 generates an Ethernet frame based on the control message and applies it to the central international language processor 23 through the IP switch 10 in FIG. 2.

Subsequently, when the received data from the set-top box 4 is input (step ST2), the central international processor 23 gives priority to the received message data, that is, the header of the input Ethernet frame. The data is sequentially added to the portion and stored in the data memory 26.

The data memory 26 has a ranking set so that the address is sequentially stored according to the input data. The data memory 26 stores the data sequentially in accordance with the sequential information provided by the central international language processor 23 (ST3 to ST4). step).

Accordingly, the central international language processor 23 sequentially stores the message data continuously received as described above, so that even if a large amount of data is momentarily received, the central international language processor 23 stores and processes the data, thereby preventing the processing load.

Then, the central international language processor 23 stores the received data as described above, and reads out the data having the highest priority among the data stored in the data memory 26, that is, the control content of the data. Or by performing a control process for sending data to the destination (steps ST5 to ST6), data reception and processing are performed at the same time.

Therefore, in the case of a large amount of data reception, data that cannot be processed while being received continuously while being processed together with the reception is stored according to the priority by the above processing method.

That is, according to the above embodiment, when the central station receives a large amount of data at once, the central station buffers the received data and processes the received data, thereby preventing the load caused by the received data processing and performing rapid transmission data processing.

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.

As described above, according to the present invention, by receiving and processing a large amount of message data received by a central station in a multimedia satellite communication system, a processing load can be prevented and the received data can be processed quickly.

Claims (1)

In the receiving message processing method of a central station controlling transmission and reception of message data by allocating and calling satellite resources to a set-top box requesting access, A message data receiving step of determining whether there is message data received from the set-top box, A priority leveling step of giving priority to the received message data; A sequential storage step of sequentially storing the received message data given the priority; A stored data reading step of sequentially reading the stored received message data; And a receiving message processing step of firstly transmitting and controlling the read data.