KR20040055416A - Combined connection-oriented and connectionless switching system and its switching method - Google Patents

Abstract

PURPOSE: A composite connection type switching system and a method therefor are provided to support both non-connection-based service and connection-based service in the same switching system. CONSTITUTION: A non-connection-based switch(120) handles switching between an input and an output with respect to non-connection-based data. A connection-based switch(125) handles switching between an input and an output with respect to connection-based data. Entry switching units(100,110) output the connection-based data to the connection-based switch and non-connection-based data to the non-connection-based switch. Input connection information processors(105,115) make a connection setup/release request of the connection-based switch with respect to the connection-based data. A connection-based switch controller(130) controls connection setup/release of the connection-based switch upon receiving the connection setup/release request. Exit matching units(135,145) match output data of the connection-based switch and the non-connection-based switch and output it. Output connection information processors(140,150) control connection setup/release of input ports of the exit matching units(135,145) by communicating with the connection-based switch controller(130).

Description

Combined connection-oriented and connectionless switching system and its switching method}

The present invention relates to a switching system, and more particularly, to a hybrid connection type switching system and method for simultaneously supporting connectionless and connection-based services in the same switching system.

Today's Internet services are divided into connectionless and connection-based services. Connectionless-based services, also called best-in-class services, are services that do not guarantee immediate action against real-time or loss or recovery of data. In addition, in the case of best service, a separate band for service of subscriber data is not allocated. Therefore, a competition for preemption of bands may occur between a plurality of subscribers, which causes a collision between services. A conflict of these services means the loss of specific subscriber data. As a result, in the best service, it is difficult to provide differentiated services for each subscriber and to guarantee the stable quality required by the subscriber. In contrast, the connection-based service prevents collisions between subscribers, unlike connectionless-based services, by allocating a predetermined amount of bands for the service in advance. Therefore, it is easy to guarantee the real-time, it is possible to provide a stable service of the subscriber desired by minimizing the loss of subscriber data in service.

A general switching system provides a connectionless service. All input data is searched for the subscriber information list in the subscriber interface and then output to the output port of the subscriber interface. The output data is transferred back to the switch's input port and switched to the switch's output port. In the case of a switch, switching is performed by analyzing switch output port information included in subscriber data input. There are various types of data input to the input port of the switch, the use of the band between them has the characteristics of the preemption method. In other words, the subscriber data occupying the band first receives the switching service, and due to this preemptive competition, some data may experience propagation delays and losses, thereby preventing the desired level of quality assurance. However, since there is no need to manage the connection of the channel for guaranteeing the bandwidth, there is an advantage of the management aspect of the system. Since all the bands are available to all subscribers at any time, the overall performance of the system may be higher than that of the connection-based switch.

The connection-based switch also extracts the header information of the subscriber data input through the subscriber interface and then determines the output port of the subscriber interface by searching the subscriber information list. However, in the case of a connection-based service, a connection is established between the subscribers of the two ends before the actual transmission of data, and a predetermined amount of bandwidth is allocated between the output port of the port subscriber interface and the input port of the switch. In this case, the data input through the connection establishment path is monopolized in the corresponding band, thereby ensuring the quality required by the subscriber data service. When subscriber data is continuously input in the same channel, no additional connection setting is necessary. However, in the case of such a connection-based switch structure, the bandwidth secured by the connection setup is not available to other subscriber data, so that the overall performance of the system is degraded. In general, resource management for all connections and connection establishment / release within the switch are performed. An additional processor for control and its connection management is needed. Most switches have a single structure, either connectionless or connection-based.

The technical problem to be achieved by the present invention is to compensate for the shortcomings of the single connectionless or single connection-based system. The present invention provides a multi-connection switching system and method that simultaneously supports connection-based services.

1 is a block diagram showing the configuration of a hybrid connection type switching system according to the present invention.

2 is a block diagram illustrating an example of a more detailed configuration of the entrance matching unit and an input connection information processor.

3 is a block diagram illustrating a configuration of an exit matching unit which receives the switched user data as an input and delivers the changed user data to the output port of the subscriber interface again.

4 illustrates an example of a configuration of an input connection information table.

5 illustrates an example of the configuration of the output connection information table.

FIG. 6 illustrates the characteristics of subscriber data input to a MAC, a protocol engine, or a traffic manager in an entrance matching unit according to an embodiment of the present invention; A flowchart of a process of registering / releasing a service input connection information table and generating a connection establishment and release request is shown.

FIG. 7 is a flowchart illustrating an input connection information management flowchart for changing and managing contents of an input connection information table according to input connection information detection and connection establishment / release request information input to a converter.

FIG. 8 illustrates a processing flow of input connection information for converting a message input / output with the input connection information processor and transferring the message to a component connected to the input connection information processor.

FIG. 9 is a flowchart illustrating a process of a connection-based switch controller receiving a connection establishment / disconnection-related request generated at an entrance matching unit or an exit matching unit, performing connection establishment / release for a corresponding connection, and transmitting the result again. will be.

10 is a flowchart illustrating a process of transmitting a message after processing and processing various messages input to the output connection information processor.

11 is a flowchart illustrating a process of generating and executing an output connection establishment / release request of an output connection manager and managing contents of an output connection information table.

In order to achieve the above technical problem, a hybrid connection type switching system according to the present invention includes a non-connection based switch that is responsible for switching between input and output for connectionless based data; A connection-based switch in charge of switching between input and output for connection-based data; At least two inlet matching units for distinguishing whether input data is connectionless-based data or connection-based data so that the connection-based data is output to the connection-based switch, and the connection-based data is output to the connectionless-based switch; An input connection information processor for requesting connection setting / release of a connection-based switch to the connection-based data classified by the entrance matching unit; A connection-based switch controller configured to receive a connection establishment / release request of the input connection information processor to control connection establishment / release of the connection-based switch; At least two outlet matching units for matching output data of the connection-based switch and the non-connection-based switch and outputting them to the outside; And an output connection information processor configured to communicate with the connection-based switch controller to control connection setting / release of the input port of the outlet matching unit for connection setting / release of the output port of the connection-based switch and the input port of the outlet matching unit. It is characterized by including.

The entry matching unit includes at least two output port information related to a protocol engine, connection classification information indicating whether connection based data or connectionless based data, a search key, and an input connection information table including a timer value indicating a connection setting duration, An input connection information detector / transformer that receives a connection-based service connection request and transmits it to the input connection information processor, and changes and manages information in the input connection information table accordingly when a connection release request is received from the input connection information processor; Search for the input connection information table with respect to the header of the input packet, and if the input packet is connection-based data, make a connection-based service connection request. Then, connection-based data of the same channel is connected based on the input connection information table. The service connection request, and if the connection-based data, characterized in that it comprises a protocol engine for transmitting data through the connectionless channel.

The input connection information table may further include output packet header information indicating header information of the output packet when the format of the input packet and the output packet are different.

The input connection information detector / converter resets a timer value of an input connection information table of a corresponding connection when a disconnect request is received from the input connection information processor, and uses a bandwidth of an output connection instead of a disconnect request from the input connection information processor. When receiving the information that has exceeded, characterized in that it further comprises a function to stop the connection establishment request of the connection-based service.

The entrance matching unit may further include at least two output port information related to the media control layer, connection classification information indicating whether connection-based data or connectionless data is included, an input connection information table including a search key, and a timer value indicating a connection setting duration. An input connection information detector / transformer configured to receive a connection-based service connection request and transmit it to the input connection information processor, and to change and manage information in the input connection information table accordingly when a connection release request is received from the input connection information processor; Search for the input connection information table with respect to the header of the input packet, and if the input packet is connection-based data, make a connection-based service connection request. Then, connection-based data of the same channel is connected based on the input connection information table. The service connection request, and if the connection-based data, characterized in that it comprises a media access controller for transmitting data through the connectionless channel.

For the input matching unit for the input connection information table including at least two output port information related to the traffic manager, connection classification information indicating whether the connection-based data or non-connection-based data, a search key, a timer value indicating the connection establishment duration, An input connection information detector / transformer that receives a connection-based service connection request and transmits it to the input connection information processor, and changes and manages information in the input connection information table accordingly when a connection release request is received from the input connection information processor; Search for the input connection information table with respect to the header of the input packet, and if the input packet is connection-based data, make a connection-based service connection request. Then, connection-based data of the same channel is connected based on the input connection information table. The service connection request is made, and if the connection-based data, characterized in that it comprises a traffic manager for transmitting data through the connectionless channel.

The exit matching unit includes an output connection information table including output connection classification information for identifying an output connection path of input data, connection-based service availability and usage bandwidth information, connectionless service availability and usage bandwidth information, and buffer control information. An output connection manager for receiving connection request and disconnection information from the output connection information processor and for changing and managing information in the output connection information table accordingly; And a protocol engine for searching the output connection information table and outputting data to a corresponding output port for outputting data inputted through a connectionless-based switch and a connection-based switch.

The output connection information table preferably further includes scheduling information for outputting the data traffic according to a predetermined priority when the traffic of connection-based data and non-connection-based data is contended.

In order to achieve the above technical problem, the hybrid connection type switching method according to the present invention includes a connection-based switch that is responsible for switching between input / output and connection-based data for connection-based data for connection-based data. A hybrid connection switching method of a hybrid connection-type switching system comprising: (a) analyzing a header of input data to distinguish whether connection-based data or connectionless-based data and extracting connection information; (b) switching the connection-based switch and the connectionless-based switch according to the connection information, outputting the connection-based data as the connection-based switch, and the connection-based data as the connectionless-based switch; And (c) outputting the non-connection-based switch and data output from the connection-based switch to an external output port according to the connection information.

Step (a) may include analyzing a header of the input packet; And retrieving an input connection information table that stores a search key, an output port number, and connection-based / non-connection-based data classification information, and distinguishing whether the input packet header is connection-based data or connectionless-based data and obtaining output port information. ; The step (b) may include: switching the disconnected based switch according to the output port information and outputting data to the disconnected based switch if the discrimination result is disconnected based data; If the result of the discrimination is connection-based data, making a connection-based service connection request and switching the connection-based switch according to the output port information for the connection request; And outputting connection-based data to the switched connection-based switch.

The connection request and switching step may include checking a timer value if the data distinguished in the discriminating step is connection-based data; If the timer value is 0, storing a search key, an output port number, and a timer value of the input connection information table in a connection-based service input connection information table and requesting connection-based service connection; Requesting the connection based connection based service connection if the timer value is not 0 and the timer value is greater than a predetermined threshold; And if the timer value is not 0 and the timer value is smaller than a predetermined threshold, increasing the timer value and requesting connection-based service connection.

Step (c) outputs the switched connection-based user data and the connectionless-based user data to the output port of the output matching device according to the connection / connection-free service availability and bandwidth information, buffer control information, and a predetermined scheduling algorithm. step; And outputting data of an output port of the output matching device to an external output port through a predetermined interface.

A computer readable recording medium having recorded thereon a program for executing the invention described above is provided.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. 1 is a block diagram illustrating a configuration of a hybrid connection type switching system according to the present invention. The connectionless switch 120, the connection-based switch 125, N inlet matching units 100 and 110, and N inputs are illustrated in FIG. Connection information processor (105, 115), connection-based switch controller 130, N outlet matching unit (135, 145) and N output connection information processor (150).

The connectionless switch 120 is responsible for switching between input and output for the connectionless data. The connection-based switch 125 is responsible for switching between input and output for the connectionless data. The N entrance matching units 100 and 110 distinguish input data from non-connection based data or connection based data so that connection-based data is output to the connection-based switch, and connectionless-based data to the connectionless-based switch. Causes output The input connection information processor (105, 115) requests connection establishment / release of the connection-based switch for the connection-based data divided by the entrance matching unit (100, 110). The connection-based switch controller 130 receives a connection establishment / release request of the input connection information processor to control connection establishment / release of the connection-based switch.

The N outlet matching units 135 and 145 match the output data of the connection-based switch and the non-connection-based switch and output them to the outside. The output connection information processor 140, 150 communicates with the connection-based switch controller to establish a connection between the output port of the connection-based switch and the input port of the outlet matching unit. Control on / off In addition, information about the number of connected / disconnected channels, bandwidth, quota, capacity, and scheduling of the output matcher may be provided from the software of the upper layer of the system to provide information for controlling the output matcher.

FIG. 2 is a block diagram illustrating an example of a more detailed configuration of the entrance matching unit 100 and the input connection information processor 250, and includes a physical layer interface 200, a medium access controller 210, and a protocol engine. 220, a traffic manager 230, an input connection information detector / converter 240, and an input connection information processor 250.

The physical layer interface unit 200 is responsible for the electrical and mechanical interface to the communication medium of the input data. The media access controller 210 interfaces the electrical signal passing through the physical interface with the upper layer.

The input connection information detector / transformer 240 receives a connection-based service connection request for an input connection information table, and transmits it to the input connection information processor, and when the disconnection request is received from the input connection information processor, the input connection information corresponding thereto. Change and manage table information.

4 illustrates an example of an input connection information table, wherein the input connection information table includes at least two output port information 420 related to a protocol engine and connection classification information 430 indicating whether connection-based data or connectionless-based data is used. And a search key 410, a timer value 440 indicating the connection establishment duration, and output packet header information 450 indicating header information of the output packet when the format of the input packet and the output packet is different.

The processor engine 220 searches the input connection information table with respect to the header of the input packet, and if the input packet is connection-based data, makes a connection-based service connection request, and then the connection-based data of the same channel is the input connection information. The connection-based service connection request is referred to the table, and if the connection-based data, the data is transmitted through the connection-free channel.

The input connection information table may have the information about each of the media access controller, the processor engine, and the traffic manager. In this case, the media access controller and the traffic manager search the input connection information table with respect to the header of the input packet like the protocol engine, and if the input packet is connection-based data, then the connection-based service connection request is made. The connection-based data may make a connection-based service connection request with reference to the input connection information table, and in the case of connectionless data, data may be transmitted through a connectionless channel. That is, packet analysis may be performed in a media access controller or a traffic manager as needed. In this case, the corresponding information may be searched for in the input connection information table.

3 is a block diagram illustrating a configuration of the exit matching unit 135 that receives the switched user data as an input and delivers it to the output port of the subscriber interface. The traffic manager 300, the protocol engine 310, and the media access controller are shown in FIG. 320, a physical layer interface 330, and an output connection manager 340.

The traffic manager 300 queues the data input through the connectionless switch and the connection based switch based on the flow control and call admission control algorithms transmitted from the upper call control processor and the bandwidth information of each connection. Print in priority. In the case of connection-based data, the output connection information table is searched to output data to the corresponding output port.

The output connection manager 340 receives the connection request and disconnection information for the output connection information table from the output connection information processor and changes and manages the information in the output connection information table accordingly.

5 shows the output connection information table, output connection classification information 510 for identifying an output connection path of input data, connection-based service availability and utilization bandwidth information 520, connectionless-based service availability and use And bandwidth information 530, buffer control information 550, and scheduling information 540 for outputting the data traffic according to a predetermined priority when the traffic of connection-based data and connectionless data is contended.

The media access controller 320 has a function opposite to that of the media access controller 210 of the input matching unit, and interfaces the data of the network processor to fit the physical layer. The physical layer interface 330 has a function opposite to that of the physical layer interface 200 of the input matching unit, and interfaces an electrical signal of the medium access controller with an optical signal, a mechanical signal, and the like.

Meanwhile, FIG. 6 extracts a part of a header or contents of subscriber data inputted to various points in the entrance matching unit from the entrance matching unit, and then checks whether the matching key with the search key of the pre-established input connection information table matches. An input connection information processing flowchart of an input connection information detection / converter for classifying services of data and performing necessary processing such as initial registration of connection setting information and management of connection setting timer value accordingly. Figure 7 detects the input connection information to properly manage the information of the corresponding connection information table by receiving the connection notification of the connection-based service generated from the exit matching unit or connection-based switch controller and the flow control message generated from the exit matching unit And an input connection information management flowchart of the converter. 8 is a process of an input connection information processor in charge of transmission / reception of connection establishment / release requests, request results, notification messages, etc. for various connections to be received or transmitted from an entrance matching unit or a connection-based switch controller. It is a flow chart. 9 illustrates connection establishment / release request messages for various connection-based services generated and transmitted by the entrance matching unit, connection connection request messages generated and transmitted by the exit matching unit and various connection establishment / release requests generated by the input matching unit. A connection-based switch controller processing flow diagram for processing a result message of a connection-based switch controller, an output connection usage band threshold exceeded notification message, and transmitting the result of the processing to an appropriate place.

10 is a diagram illustrating a disconnection message and an output connection utilization threshold exceeded notification message delivered by an output connection manager to a connection-based switch controller and an input connection establishment / release notification message transmitted from the connection-based switch controller. This is a flow chart of the output connection information processor delivered to the server. FIG. 11 is a flowchart of an output connection manager managing an output connection information table for performing scheduling and buffer control for each interface of an exit matching unit, and performing an appropriate flow control request as necessary.

6 to 11, the operation between the above-described building blocks according to the present invention will be described. Pure user data including signaling information or not including signaling information is input through the entrance matching unit 100. The user data arrives at the media access controller 210 via the physical layer 200. The media access controller 210 transfers the input user packet to the protocol engine 220. The protocol engine 220 extracts the input connection information from the inputted subscriber data (step 602), then searches the input connection information table 400 corresponding to the protocol engine layer (step 604), and then searches the search key of the table 400. In operation 606, it is checked whether the connection information exists in the corresponding connection information table by comparing with the value. If the information extracted from the input data is not present in the input connection information table, it is treated as a failure to search the input connection information table. In step 608, if the information extracted from the input data is in the input connection information table, it is determined whether the connection of the input subscriber data is connectionless or connection-based (step 612). Using the service or connectionless service identification information 430, it is determined whether the service of the subscriber is a connection based service or a connectionless based service.

If the connection is based, the data is transmitted to the non-connection based switching path (step 610). If the connection is based, the connection based service timer value 440 of the input connection information table is checked (step 614). It distinguishes whether the connection is established or new. If the timer value is 0, i.e., a request for a new connection, a request for setting up a corresponding connection is requested and connection information is transmitted (step 616). If the connection establishment is successful, after registering a timer for the connection (step 620), the subscriber data is transmitted using the connection-based switching path (step 622). If the requested connection fails, the corresponding connection establishment failure process is performed (step 624).

If it is determined that the timer value for the connection is negative (step 628), if it is negative, it means that there is no input of subscriber data for a predetermined time or more, and then request release of the connection (step 636). If it is determined that the disconnect request is successful (step 638), and if successful, the connection-based service connection timer of the connection is reset (step 640). If the release request is unsuccessful, processing for failure is performed (step 634). If the connection-based service connection timer value of the connection is a positive number greater than zero, this means that the connection has already been established. At this time, it is determined whether the value of the timer is smaller than the threshold (step 630), and if it is small, the timer value is increased by a certain amount (step 632). The subscriber data is transmitted through the connection-based switching path (step 622). The value of the connection-based service connection timer of each connection decreases at regular intervals and stops decreasing when a negative value is reached.

The input connection information detection and converter 240 receives a message from the input connection information processor 250 (step 710), determines whether the type of the received message is an output disconnection notification message (step 720), and disconnection notification message. In this case, the connection-based service connection timer of the input connection information table is reset (step 730). If the output connection use band threshold exceeded message generated by the output connection manager 340 of the exit matching unit (step 740), additionally. Stops the input connection establishment request for connection establishment that outputs the corresponding interface among the generated connection-based services (step 750). If it is not the message exceeding the bandwidth usage threshold of the output connection, it receives and processes an abnormal message (step 760).

An operation of the input connection information processor 250 will be described with reference to FIG. 8. A message is received by the input connection information processor 250 (step 805), and the message is determined whether the connection-based service connection establishment or connection request described in FIG. 6 is performed (step 810). Generates an input connection establishment or disconnection message (step 815), and transmits an input connection establishment / release request message to the connection-based switch controller 130 (step 820).

If the received message is a result (response) message for the input connection establishment or disconnection request generated by the connection-based switch controller 130 (step 830), and generates a corresponding request result message (step 835), input connection information The input connection establishment / release request result message is transmitted to the detection and converter 240 (step 840). If an output disconnection notification message generated by the output connection manager of the exit matching unit is received (step 845), the output connection disconnection is performed. A notification message is generated (step 850), and the output disconnection notification message is transmitted to the input connection information detection and the converter (step 855). If so, a connection-based service usage band threshold exceeded notification message is generated (step 865), and the connection-based service usage band threshold exceeded notification message is input. Beam passes to the sensing and transducer (step 870) and not the output connection used band exceeds the threshold notification message in the step 860 to process the received abnormal message (step 875)

An operation of the connection based switch controller will be described with reference to FIG. 9. The connection-based switch controller 130 receives the message from the input connection information processor 250 (step 905), and determines whether the message is a connection-based connection request message (step 910). In step 915, if the connection establishment is successful (step 920), the connection establishment success notification is notified to the input connection information processor 250 and the output connection information processor 350 (step 925). The failure notification is notified to the input connection information processor 250 (step 930).

If the message received in step 905 is a connection-based disconnect request message (step 935), if the connection is disconnected (step 940), and as a result of the disconnection success (step 945), a success notification message for disconnection is input. (Step 965) If the execution of the disconnect request fails, the sender requesting the disconnection notification message is examined (step 950). If the sender is the input connection information processor, disconnection fails. The notification is sent to the input connection information processor (step 955), and if the source is the output connection information processor, a disconnect failure notification is sent to the output connection information processor (step 960).

If the message received in step 905 is an output connection use band threshold exceeded notification message (step 970), the input connection use band threshold exceeded notification is notified to the input connection information processor 250. In operation 970, the output connection use band threshold exceeded notification message or an abnormal message is received.

An operation of the output connection information processor 350 will be described with reference to FIG. 10. The output connection information processor receives the message (step 1005) when the connection establishment or disconnection performed by the connection-based switch controller 130 is successful (step 1010) due to the connection-based service connection establishment or disconnection request of the entrance matching unit. Having received the corresponding connection information from the controller 130 (604), the exit connection information processor generates an input connection establishment / release success notification message (step 1015) and transmits it to the output connection manager (step 1020). In addition, when the output connection information processor 350 receives an output disconnect request message from the output connection manager 340 (step 1025), generates an output disconnect request message (step 1030), and outputs an output disconnect request to the switch controller. Deliver the message (step 1035).

In addition, when receiving the output connection use band threshold exceeded notification message from the output connection manager 340 (step 1040), an output connection use band threshold exceeded notification message is generated (step 1045) and transmitted to the connection-based switch controller (step 1050). ). If the message received in step 1005 is not an output connection usage threshold exceeded notification message, the message is processed as an abnormal message reception (step 1055).

An operation of the output connection manager 340 will be described with reference to FIG. 11. When the output connection manager 340 receives the message (step 1105) and receives the input connection establishment success notification message transmitted by the output connection information processor 350 (step 1110), the output connection manager 340 outputs the output connection for the requested input connection. In step 1115, a check is made to see if the threshold of the used band is exceeded when adding to the corresponding interface of the negative. If the output connection usage band is exceeded, the output connection manager sends a disconnect request for the corresponding input connection to the connection-based switch controller (step 1125), thereby releasing the corresponding input connection of the already established connection-based switch. If the output connection for the added new input connection is within the use band threshold, it is registered in the output connection information table corresponding to the input connection (step 1120).

When receiving the input disconnection success notification message performed by the request of the input matching unit (step 1130), the output connection information corresponding to the input connection is removed from the output connection information table (step 1135). If an unregistered message is received, reception processing for an abnormal message is performed (step 1140).

Referring to the present invention as a whole based on the operation of each block described above are as follows. The input connection information detector / transformer 240 of the entrance matching unit 100 determines connection-based processing and non-connection-based processing of subscriber data, and transmits the corresponding information to the input connection information processor 250 when connection-based processing is necessary. . The request received by the input connection information processor is transferred back to the connection-based switch controller 130, and the connection-based switch connection controller performs a connection control corresponding to the requested content, and then outputs the result to the input connection information processor and the output connection. Transmit to the information processor 350. If the request is successful, the input connection information processor delivers the subscriber data of the connection to the connection-based switch channel, and the output connection information processor outputs the connection information received from the connection-based switch controller in the outlet matching unit 135. By transmitting to the manager 340, the output connection information manager registers the corresponding information, thereby establishing a connection capable of a whole connection-based service.

The invention can also be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet). Include. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

As described above, the present invention can be variously substituted, modified, and changed without departing from the technical spirit of the present invention by those skilled in the art. It is not.

According to the present invention described above, as well as the best connectionless service based on the typical form of Internet traffic, as well as support for broadcasting services such as digital cable broadcasting and video on demand services and end-to-end real-time services such as VoIP service over the Internet (VoIP) Concurrent support of connection-based services for network services is achieved within the same system. In the case of connection-based services, an independent subscriber information lookup table is used to reduce the lookup burden of the network processor in a core switching system that needs to manage and manage a large amount of subscriber information. In addition, the channel that is not used for a certain time after being established through the aging technique of the connection-based service information table is automatically disconnected to increase the utilization efficiency of the connection-based resources.

Claims (13)

A non-connection based switch that is responsible for switching between input and output for non-connection based data; A connection-based switch in charge of switching between input and output for connection-based data; At least two inlet matching units for distinguishing whether input data is connectionless-based data or connection-based data so that the connection-based data is output to the connection-based switch, and the connection-based data is output to the connectionless-based switch; An input connection information processor for requesting connection setting / release of a connection-based switch to the connection-based data classified by the entrance matching unit; A connection-based switch controller configured to receive a connection establishment / release request of the input connection information processor to control connection establishment / release of the connection-based switch; At least two outlet matching units for matching output data of the connection-based switch and the non-connection-based switch and outputting them to the outside; And An output connection information processor for controlling connection setting / release of the input port of the outlet matching unit in communication with the connection-based switch controller for connection setting / release of the output port of the connection-based switch and the input port of the outlet matching unit. Multiple connection switching system characterized in that. The method of claim 1, wherein the inlet matching unit A connection-based service connection for an input connection information table including at least two output port information related to a protocol engine, connection identification information indicating whether connection-based data or connectionless-based data, a search key, and a timer value indicating a connection establishment duration. An input connection information detector / transformer that receives the request and transmits the information to the input connection information processor, and changes and manages information in the input connection information table according to the request for disconnection from the input connection information processor; And Search for the input connection information table with respect to the header of the input packet and if the input packet is connection-based data, the connection-based service connection request is made. Subsequently, connection-based data of the same channel is referenced to the input connection information table. And a protocol engine for making a connection request and transmitting data through a connectionless channel if the connectionless data is connected. The method of claim 2, wherein the input connection information table When the format of the input packet and the output packet is different, the combined connection type switching system, characterized in that further comprising output packet header information indicating the header information of the output packet. The method of claim 3, wherein the input connection information detector / converter When a disconnect request is received from the input connection information processor, the timer value of the input connection information table of the corresponding connection is reset. And a function of stopping a connection establishment request of a connection-based service upon receiving information from the input connection information processor that the request for disconnection is exceeded and the usage band threshold of the output connection has been exceeded. The method of claim 1, wherein the inlet matching unit A connection-based service for an input connection information table including at least two output port information related to the media control layer, connection classification information indicating whether connection-based data or connectionless-based data, a search key, and a timer value indicating a connection establishment duration An input connection information detector / transformer that receives a connection request and transmits it to the input connection information processor, and changes and manages information in the input connection information table according to the connection release request from the input connection information processor; And Search for the input connection information table with respect to the header of the input packet and if the input packet is connection-based data, the connection-based service connection request is made. Subsequently, connection-based data of the same channel is referenced to the input connection information table. And a medium access controller for making a connection request and transmitting data through a connectionless channel if the connectionless data is connected. The method of claim 1, wherein the inlet matching unit A connection-based service connection, for an input connection information table including at least two output port information related to the traffic manager, connection identification information indicating whether connection-based data or connectionless data, a search key, and a timer value indicating a connection establishment duration. An input connection information detector / transformer that receives the request and transmits the information to the input connection information processor, and changes and manages information in the input connection information table according to the request for disconnection from the input connection information processor; And Search for the input connection information table with respect to the header of the input packet and if the input packet is connection-based data, the connection-based service connection request is made. Subsequently, connection-based data of the same channel is referenced to the input connection information table. And a traffic manager for making a connection request and transmitting data through a connectionless channel if the connectionless data is connectionless. The method of claim 2, wherein the outlet matching portion Connection request for output connection information table including output connection classification information, connection based service available and used bandwidth information, connectionless based service available and used bandwidth information, and buffer control information for identifying the output connection path of input data. And an output connection manager for receiving disconnection information from the output connection information processor and changing and managing information in the output connection information table accordingly. And And a protocol engine for searching the output connection information table and outputting data to a corresponding output port for output of data input through a connectionless switch and a connection-based switch. 8. The method of claim 7, wherein the output connection information table is And scheduling information for outputting the data traffic according to a predetermined priority when traffic of connection-based data and connectionless-based data is contended. In the hybrid connection type switching method of a hybrid connection type switching system having a non-connection-based switch for switching between input and output for the connection-based data and a connection-based switch for switching between input and output for the connection-based data, (a) analyzing the header of the input data to distinguish whether the connection-based data or the connectionless-based data and extract the connection information; (b) switching the connection-based switch and the connectionless-based switch according to the connection information, outputting the connection-based data as the connection-based switch, and the connection-based data as the connectionless-based switch; And and (c) outputting the data output from the connectionless switch and the connection based switch to an external output port according to the connection information. The method of claim 9, wherein step (a) Analyzing a header of the input packet; And Retrieving an input connection information table that stores a search key, an output port number, and connection-based / non-connection-based data classification information to distinguish whether the input packet header is connection-based data or connectionless-based data, and to obtain output port information; Step (b) is Switching the disconnected based switch according to the output port information and outputting data to the disconnected based switch if the discrimination result is disconnected based data; If the result of the discrimination is connection-based data, making a connection-based service connection request and switching the connection-based switch according to the output port information for the connection request; And Outputting connection-based data to the switched connection-based switch. The method of claim 10, wherein the connection request and switching step Checking the timer value if the data distinguished in the discriminating step is connection-based data; If the timer value is 0, storing a search key, an output port number, and a timer value of the input connection information table in a connection-based service input connection information table and requesting connection-based service connection; Requesting the connection-based connection-based service connection if the timer value is not zero and the timer value is greater than a predetermined threshold; And And if the timer value is not 0 and the timer value is less than a predetermined threshold, increasing the timer value and requesting connection based service connection. The method of claim 9, wherein step (c) Outputting the switched connection-based user data and the connectionless-based user data to the output port of the output matching device according to the connection / connectionless service availability and bandwidth information, buffer control information, and a predetermined scheduling algorithm; And And outputting data of an output port of the output matching device to an external output port through a predetermined interface. A computer-readable recording medium having recorded thereon a program for executing the invention according to any one of claims 9 to 12.