KR20000041830A - Method of controlling connection of dormant user in multimedia satellite telecommunication system - Google Patents

Abstract

PURPOSE: A method, controlling connection of dormant users in a multimedia satellite telecommunication system, is provided to draw back allotted resources of satellites automatically when subscribers don't use the resources during service days. When subscribers request resetting, the method reconnects the subscribers with the relevant servers instantly. CONSTITUTION: A method of controlling connection of dormant users works for a multimedia satellite telecommunication system that has set top boxes(4) connected with computers(5), and land earth satellites(1) managing overall network and performing control functions, so provides variety of multimedia services to subscribers. The method comprises the steps of: a set top box(4) requests to draw back resources that has allotted to land earth satellites, if the fixed traffic data isn't inputted while specific time has passed after connections completed between subscribers and the internet or multimedia servers; the land earth satellites draw back allotted resources after the set top boxes(4) request its cancellation; the set top boxes(4) request to allocate to the land earth satellites(1) when it received fixed traffic data from subscribers after the resources deprived; and the set top boxes(4) request to access to the internet or the relevant multimedia server that is based on the objective IP address(70) of traffic data inputted by the subscriber. The method, if subscribers, during the service days, don't use the service long time, draws back the allotted resources, as it doesn't allow the subscriber to know, and accepts request of other subscribers, so it improves efficiency of operating resources as well as enables subscribers, if they request resetting, to access the internet or multimedia servers, already subscribed, instantly.

Description

Control method for connection of dormant user in multimedia satellite communication system

The present invention relates to a multimedia satellite communication system, and in particular, when a subscriber maintains a dormant state for a predetermined time in a service state, it automatically recovers the allocated satellite resources, and upon connection request, immediately connects to a corresponding server that was in service. The present invention relates to a dormant user connection control method in a multimedia satellite communication system.

The satellite communication system is capable of ultra long distance communication such as communication between countries without having a separate communication line. At present, the spread of satellite broadcasting system has been developed to take advantage of such satellite communication system to directly receive satellite broadcasting in a home through a set top box.

On the other hand, unlike the existing PSTN network, based on data packet transmission, an Internet network is adopted in which a plurality of subscribers use a single communication line in common, thereby enabling data communication using a personal computer. In addition, a multimedia server providing various multimedia services such as home banking or home shopping has emerged.

However, in the satellite communication system, since a communication network is generally configured in one direction, it is impossible for a general subscriber to access an Internet network and to receive Internet services or various multimedia services. Therefore, in order to solve this problem, a multimedia satellite communication system capable of accessing an internet network or a multimedia server through a satellite communication system has been proposed and developed.

1 is a system configuration diagram showing an overall system configuration of the 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. 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 general, in the case of a forward link transmitted from the central station 1 to the set top box 4, a large amount of messages can be transmitted through a TDM method, and the return is transmitted from the set top box 4 to the central station 1. In case of a link, a code division multiple access (CDMA) scheme is used to accommodate a plurality of subscribers.

In the multimedia satellite communication system, the central station 1 repeatedly provides various information necessary when the set-top box 4 requests access to the central station 1 at regular intervals, and the set-top box 4 ) Executes the connection establishment request based on the access information transmitted from the central station 1.

That is, when a connection establishment request for the Internet or a multimedia server is input from the personal computer 5, the set-top box 4 transmits subscriber information such as a subscriber ID, a password, and a subscriber account to the central station 1 to request a connection establishment. When the control message is input, the central station 1 allocates the currently available channel frequency, CDMA code, etc. to the subscriber.

Subsequently, when a transmission message is input from the personal computer 5 while the connection is established, the set-top box 4 transmits the corresponding traffic data to the central station 1, and the central station 1 receives the set-top box 4 from the set-top box 4. When traffic data is received, it is transmitted to the Internet or the corresponding multimedia server.

The central station 1 transmits the traffic data from the Internet or the multimedia server to the corresponding set-top box 4, and the set-top box 4 transmits the traffic data from the central station 1 to the personal computer 5. Will be sent).

Meanwhile, when the disconnect request message is input from the personal computer 5, the set top box 4 transmits the disconnect request message to the central station 1. Then, the central station 1 recovers the resources by setting the channel frequency, CDMA code, etc. allocated to the set top box 4 to the unused state, and executes the billing settlement for the call usage to date.

However, the conventional multimedia satellite communication system has the following problems.

In other words, even if the subscriber is in a dormant state in which the subscriber does not send a predetermined traffic message to the Internet or the multimedia server for a long time, the subscriber continuously occupies the allocated satellite resources until the subscriber requests to disconnect. The lack of satellite resources may occur when a subscriber requests a service, and thus, there is a concern that the reliability of the system may be deteriorated because the multimedia service may not be immediately provided to other subscribers.

In addition, this has a problem that the subscriber will be charged even if the actual service state is not.

Accordingly, the present invention was created in view of the above circumstances, and when the subscriber maintains a dormant state for a certain time in the service state, it automatically recovers the allocated satellite resources and immediately connects to the corresponding server which was in service when a reset request is made. The purpose of the present invention is to provide a dormant user connection control method in a multimedia satellite communication system.

1 is a system schematic diagram of an overall multimedia satellite communication system.

Figure 2 is a block diagram showing the configuration of a central station for explaining the dormant user connection control method in a multimedia satellite communication system according to an embodiment of the present invention.

Figure 3 is a block diagram showing the configuration of a set-top box for explaining a dormant user connection control method in a multimedia satellite communication system according to an embodiment of the present invention.

4 is an operation flowchart for explaining a dormant user connection control method in a multimedia satellite communication system according to an embodiment of 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

60: timer 70: destination IP memory

80: traffic data memory

In the multimedia satellite communication system according to the present invention for realizing the above object, the dormant subscriber connection control method includes a set-top box combined with a personal computer and a central station for performing overall network operation management and control functions. In the multimedia satellite communication system to provide a, if the predetermined traffic data is not input until a certain time passes after the subscriber and the Internet or the multimedia server is connected, the set-top box is required to release the resources allocated to the central station And, if there is a request for releasing resources from the set-top box, the central station releases the allocated resources. After the allocated resources are released, the set-top box requests resource allocation to the central station if predetermined traffic data is input from the subscriber. Resource from central station, When the set-top box is characterized in that it is configured by comprising the step of requesting access to the multimedia server based on the destination IP address of the traffic data received from the subscriber.

According to the present invention having the above-described configuration, the satellite resources of the subscriber are recovered and allocated to other service request subscribers when the subscriber is in the dormant state, and upon connection of the dormant subscriber's service request, the connection service can be immediately executed. do.

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

2 is a block diagram showing the configuration of a central station 1 to which the dormant user connection control method is applied in a multimedia satellite communication system according to an embodiment of the present invention.

In FIG. 2, reference numeral 10 denotes an IP switch for switching an IP packet. The IP switch 11 includes a Domain Name System (DNS) server 11, an E-mail server 12, and a Web (WEB) server 13 ), A proxy server, a multimedia service provider (MSP), a router (Router: 16), and the like are combined.

In the figure, reference numeral 17 denotes a transmission data processing apparatus for processing transmission data input from the IP switch 10, and 18 denotes 70 MHz by modulating the transmission data output from the transmission data processing apparatus 17, for example. A modulator for outputting an intermediate frequency signal of the modulator 19 is a frequency up-converted and high-output amplified intermediate frequency signal output from the modulator 18 and outputs to the antenna 2, and a high frequency signal received through the antenna 2 RF down conversion and low noise amplified RF device for outputting.

In the figure, reference numeral 20 denotes a demodulation device for demodulating an intermediate frequency signal input from the RF device 19, and 21 denotes a CDMA reception for CDMA demodulation of CDMA modulated data input by frequency demodulation in the demodulator 20. The device 22 is a reception data processing device for processing data input from the CDMA reception device 21.

In the figure, reference numeral 23 denotes a central international language processor which controls the entire apparatus of the central station 1 and performs allocation of a transmission channel frequency, a CDMA code for transmission, etc. for the set top box 4, and 24 denotes a system. Network management system for the operator to operate and manage the entire satellite network, 25 stores frequency data, CDMA code data, etc., which can be allocated to the set-top box 4, and also stores billing information for the subscriber. It is a database.

On the other hand, Figure 3 is a block diagram showing the configuration of the set-top box 4 to which the dormant user connection control method is applied in the multimedia satellite communication system according to an embodiment of the present invention.

In the drawing, reference numeral 31 denotes a frequency down-conversion and low-noise amplification of the high frequency signal transmitted from the central station 1, and a frequency up-conversion and high output amplification of the intermediate frequency signal output from the intermediate frequency generator 39 to be described later. 32 is a tuner for frequency-changing a high frequency signal output from the RF device 31, and 33 is an intermediate frequency signal output from the tuner 32, that is, a QPSK at the central station 1; A demodulator demodulates a modulated signal.

In the drawing, reference numeral 34 denotes a demultiplexer which extracts the packet of the set-top box from the packet data output from the demodulator 33 and applies it to the processor 42. Reference numeral 35 denotes an interface with the personal computer 5. Network Interface Card (NIC) to run.

In the figure, reference numeral 36 denotes a serial transmission data frame based on transmission data applied in parallel from the processor 42, and a transmission timing signal applied by the transmission timing generation unit 40 to be described later. Is a transmission frame generation unit that sequentially outputs the transmission data frames, and 37 performs CDMA modulation by mixing the CDMA codes applied from the processor 42 to the transmission data output from the transmission frame generation unit 36. The CDMA channel transmitter 38 is a modulator for QPSK modulating and outputs data output from the CDMA channel transmitter 37, and 39 is output from the modulator 38 based on the frequency data applied from the processor 42. An intermediate frequency generator converts the modulated signal into a predetermined intermediate frequency signal.

In the drawing, reference numeral 40 denotes a transmission timing generator for generating a transmission timing signal for the transmission frame generator 36 under the control of the processor 42, and 41 denotes a resource repeatedly provided from the central station 1. A data memory that stores access information data required when an allocation is requested.

In addition, reference numeral 42 denotes a processor for controlling the overall operation of the set-top box 4, which processes packet data for the personal computer 5 received from the demultiplexer 34 and outputs the packet data to the network interface card 35. In addition, the data input from the network interface card 35 is output to the transmission frame generation unit 36 and transmitted to the central station 1.

In addition, the processor 42 allocates a predetermined CDMA code to the CDMA transmitter 37 in accordance with the control data transmitted from the central station 1, and outputs frequency data to the intermediate frequency generator 39 so that the central station ( For 1), CDMA modulation and frequency modulation for the data to be transmitted are executed.

In addition, the processor 42 registers the control code data and the traffic code data allocated from the central station 1 to the demultiplexer 44 to receive and control the subsequent control data and traffic data transmitted from the central station 1. .

In the drawing, reference numeral 60 denotes a timer for generating predetermined time data according to the control signal of the processor 42, 70 denotes a destination IP memory for storing a destination IP address input from the personal computer 5; 80 is a traffic data memory for storing the traffic data finally input from the personal computer 5.

Here, the processor 42 transmits the traffic data input from the personal computer 5 to the central station 1, and drives the timer 60 to control the personal computer 5 until the count completion signal is input. If no traffic data is input from the central station 1, a predetermined resource release message is sent requesting the release of the allocated resource.

Next, an embodiment according to the present invention having the above configuration will be described with reference to the flowchart of FIG. 4.

As described in FIG. 1, the set-top box 4 requests resource allocation based on access information provided from the central station 1 when a connection request is received from the personal computer 5, and then the central station 1 is available. The channel frequency or CDMA code is assigned to the subscriber.

Subsequently, when the traffic data including the target IP address is input from the personal computer 5 while the resources are allocated as described above, the set-top box 4 transmits the corresponding traffic data to the central station 1 (A1). step). Subsequently, when the central station 1 receives the traffic data from the set-top box 4 (step B2), the traffic data is transmitted to the Internet or the multimedia server based on the destination IP address included in the traffic data. (Step B2).

When the central station 1 receives the traffic data from the Internet or the multimedia server, the central station 1 transmits the traffic data to the corresponding set top box 4 based on the destination IP address included in the traffic data. When the traffic data is input from the central station 1 is transmitted to the personal computer (5).

On the other hand, the processor 42 of the set-top box 4 sends the traffic data input from the personal computer 5 to the central station 1 in step A1, and then inputs the traffic data input from the personal computer 5. The timer 60 for controlling the interval of the drive is controlled (step A2). Subsequently, the processor 42 continuously monitors the counting operation of the timer 60 (step A3), which is input from the personal computer 5 until a predetermined counting completion signal is input from the timer 60. If the predetermined traffic data does not exist, a predetermined resource release request message is sent to the central station 1 requesting the release of the allocated resource (step A4).

Then, in the central station 1, when a predetermined resource release request message is received from the set top box 4 as described above (step B3), the satellite resources allocated to the set top box 4, that is, the channel frequency and the CDMA code, are received. Data and the like are recovered to control the corresponding area of the database 25 to be in an unused state. In addition, the central station 1 performs the billing settlement operation for the subscriber and stores it in the database 25 (step B4).

Then, the central station 1 sets the satellite resource to the unused state, and outputs a predetermined resource release request response message to the corresponding set-top box 4 (step A5).

Meanwhile, the set-top box 4 waits for the resource release request response message to be received from the central station 1 after sending the resource release request message to the central station 1 in step A4. When the release request response message is received, the processor 42 erases the channel frequency or CDMA code data stored in the data memory 41, and releases and controls the operation of the demultiplexer 34 and the CDMA channel transmitter 37. (Step A5).

At this time, communication between the set-top box 4 and the personal computer 5 is normally performed, and the set-top box 4 continuously monitors whether predetermined traffic data is input from the personal computer 5 ( Step A6).

On the other hand, the subscriber continues to recognize that the service is in service. When the predetermined traffic data including the destination IP address is input from the personal computer 5, the processor 42 stores the destination IP address and the traffic data in the destination IP memory, respectively. In addition to storing the data in the 70 and the traffic data memory 80, a predetermined resource allocation request message is sent to the central station 1 (step A7).

In the central station 1, when the resource allocation request message is received from the set-top box 4 (step B6), the database 25 is accessed to set the currently available channel frequency or CDMA code to use. After that, the channel frequency or CDMA code data is transmitted to the set-top box 4 (step B7).

On the other hand, when the satellite resource is allocated from the central station 1 (step A8), the set-top box 4 based on the destination IP address and traffic data stored in the destination IP memory 70 and the traffic data memory 80. A predetermined access request message requesting access to the server is then output (step A9).

Then, when the central station 1 receives an access request message from the set-top box 4 (step B8), the central station 1 maintains the service state by providing a path to the corresponding server based on the destination IP address (step B9). .

On the other hand, the set-top box 4 receives a message indicating that the resource is released when traffic data is not input from the subscriber even after a predetermined time elapses after the resource is released according to the completion of the timer 60. Will be printed.

Therefore, according to the above embodiment, the satellite resource allocated to the subscriber who does not use the service for a long time in the service state can receive the connection request of another subscriber, and if the connection request is received from the randomly released subscriber, You can quickly return to service.

In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the technical scope of the present invention.

As described above, according to the present invention, if the subscriber does not use the service for a long time in the service state, the subscriber does not recognize and recovers the allocated satellite resources to accommodate the connection request of other subscribers, thereby improving resource efficiency. In addition, it enables immediate access to the Internet or multimedia server that was already in service when a reset request is made.

Claims (3)

In a multimedia satellite communication system provided with a set-top box combined with a personal computer, and a central station performing overall network management and control functions to provide a variety of multimedia services to the general subscriber, After the subscriber is connected to the Internet or the multimedia server, if the predetermined traffic data is not input until a predetermined time has elapsed from the subscriber, the set-top box requests the release of resources allocated to the central station; If there is a request for the release of resources from the set-top box, the central station releases the allocated resources; After the allocated resources are released, if the predetermined traffic data is input from the subscriber, the set-top box requests resource allocation to the central station. When the resources are allocated from the central station, the set-top box is configured to include access to the Internet or the multimedia server based on the destination IP address of the traffic data inputted from the subscriber. . The method of claim 1, The set-top box and the personal computer is a dormant subscriber connection control method in the multimedia satellite communication system, characterized in that the communication in the normal service state even after the resources are released. The method of claim 1, And the set-top box further comprises outputting a predetermined resource release message to a personal computer when a predetermined time has elapsed after the resource is released.