KR100562145B1 - Information Transmitting Method By Network Grouping - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a method of transmitting information between networks through network grouping, and a computer-readable recording medium having recorded thereon a program for realizing the method.

2. The technical problem to be solved by the invention

According to the present invention, when computers connected to multiple networks participate in a multimedia conference and exchange information between participants, the users are classified into a plurality of groups, and one of the users belonging to each of the classified groups is assigned a conference information. A computer readable recording method for transmitting information between networks through a network grouping and a program for realizing the method, by operating as a relay representative computer, thereby reducing the amount of information transmitted and allowing all conference participants to receive the meeting information. To provide a record carrier.

3. Summary of the Solution of the Invention

According to an aspect of the present invention, there is provided a method of transmitting information between networks, the method comprising: dividing a user connected to a network into groups based on a router or a gateway to which a user is connected; Selecting, for the divided groups, a representative computer of each group for each user connected to a network; And time network information transmission, when comprising the step of transmitting via the representative computer of the selection, selection of the representative computer, and each user computer functions of the transmission when a user access request to the network data - this time, the user's computer The functional data includes prioritizing performance and selecting the best performing user computer as a representative computer, with reference to CPU type and speed, memory size, operating system and number of streams currently being relayed. Characterized.

4. Important uses of the invention

The present invention is used for multimedia conferences and the like.

Unicast, Multicast, Broadcast, Representative Computers, Routers

Description

Information Transmitting Method By Network Grouping}             

1 is a configuration diagram of an embodiment of a network to which the present invention is applied.

2 is an exemplary view illustrating information transmission using unicast in a network to which the present invention is applied.

3 is an exemplary diagram of information transmission using a method of transmitting information between networks through network grouping according to the present invention.

4 is an exemplary operation of adding a new user in a method of transmitting information between networks through network grouping according to the present invention.

5 is a flowchart illustrating an embodiment of a method for transmitting information between networks through network grouping according to the present invention.

6 is a flowchart illustrating an embodiment of a new user added in a method of transmitting information between networks through network grouping according to the present invention.

7 is a flowchart illustrating an exemplary operation of a representative computer at the time of a relay request in a method for efficiently transmitting information between networks through network grouping according to the present invention.

8 is a flowchart illustrating an embodiment of a server in an efficient information transmission method between networks through network grouping according to the present invention.

* Explanation of symbols on the main parts of the drawing

11: network 12: server

101 ~ 104: Router 105 ~ 113: User Computer

The present invention relates to a method of transmitting information between networks through network grouping and a computer-readable recording medium having recorded thereon a program for realizing the method.

Environment to which the present invention is applied is as shown in FIG.

Six computers 105 to 110 connected to two different routers 101 and 102 participate in a multimedia conference to exchange multimedia information such as video, voice, and data in real time. At this time, each computer may stop the information transmission at any time or start receiving the information.

In general, each computer transmits information through a network in a multicast method and a unicast method. In an embodiment of the present invention, it is assumed that the router R1 101 supports the multicast scheme and the router R2 102 does not support the multicast scheme. Therefore, a multicast scheme can be used when exchanging information between the computers 105, 106 and 107 connected to the router R1 101, and between the computers 108, 109 and 110 connected to the router R2 102. Unicast should be used when exchanging information.

In addition, a unicast method should be used when exchanging information between computers connected to the router R1 101 and the router R2 102. Therefore, multiple unicast connections must be established in order to exchange information in a multimedia conference where a computer connected to routers R1 101 and R2 102 joins.

An example of information transmission using such a unicast scheme is shown in FIG. 2.

At this time, since the performance of the computers participating in the meeting is limited, the number of computers that can transmit information is limited. In addition, if the number of users participating in the meeting increases, the information cannot be transmitted to all participants.

In addition, since the information is transmitted in a unicast manner between all the computers, there is a problem that the network load is severe.

The present invention has been proposed to solve the above problems, and an object thereof is to provide a method of transmitting information between networks through network grouping and a computer-readable recording medium having recorded thereon a program for realizing the method.

In particular, when computers connected to multiple networks participate in a multimedia conference and exchange information between participants, the users are classified into a plurality of groups, and one of the users belonging to each classified group relays the conference information. It provides a way to operate as a representative computer, reducing the amount of information transmitted and allowing all meeting participants to receive the meeting information.

According to an aspect of the present invention, there is provided a method of transmitting information between networks, the method comprising: dividing a user connected to a network into groups based on a router or a gateway to which a user is connected; Selecting, for the divided groups, a representative computer of each group for each user connected to a network; And time network information transmission, when comprising the step of transmitting via the representative computer of the selection, selection of the representative computer, and each user computer functions of the transmission when a user access request to the network data - this time, the user's computer The functional data includes prioritizing performance and selecting the best performing user computer as a representative computer, with reference to CPU type and speed, memory size, operating system and number of streams currently being relayed. It features.

The present invention also provides a method for transmitting information between networks, the method comprising: transmitting information and receiving network information when a new user connects to a network; Requesting relay to a representative computer of each group included in the received network information; Establishing and relaying a unicast connection to the representative computer for each group by the approval of the requested relay; And each of the user computer functionality data transmission time comprising the step of specifying the new representative computer by declined to relay the requested, at the time of the representative computer selection, the user access request to the network In this case, the user Computer function data includes the type and speed of the central processing unit, memory size, operating system and the number of streams currently being relayed, to prioritize performance and select the best performing user computer as a representative computer. It is characterized by.

In addition, the present invention provides a method of transmitting information between networks, the method comprising: accepting a new user and assigning an information transmission multicast address to a new user according to a connection request by a new user; If there is no existing group connected to the network, creating a new group and designating a new user as a representative computer of the new group; If there is an existing group connected to the network, designating a representative for each group for the new user and transmitting the same to the new user; And when the new user is not included in any existing group, creating a new group and transmitting information for designating the new user to the representative computer of the new group for the existing information sender, wherein the representative computer When selected, each user's computer function data transmitted when the user requests a connection to the network , where the user computer function data includes the CPU type and speed, memory size, operating system, and number of streams currently being relayed. Including- , the priority of each performance is created and the user computer with the best performance is selected as the representative computer.

On the other hand, the present invention, a network system having a processor, based on a router or gateway to which the user is connected, the function of dividing the users connected to the network by group; For each of the divided groups, a representative computer of each group for each user connected to the network is selected. In this case, when selecting a representative computer, each user computer function data transmitted when the user requests to connect to the network, Namely, the priority and performance of the central processing unit, the size of the memory, the operating system, and the number of streams being relayed, and selecting the best performing user computer as the representative computer ; And a computer readable recording medium having recorded thereon a program for realizing a function of transmitting through the selected representative computer when transmitting information between networks.

In addition, the present invention, the network system having a processor, when the new user's network connection, the function of transmitting its own information and receiving network information; Representative computer for each group included in the received network information, wherein the representative computer, each user computer function data transmitted when the user makes a connection request to the network, namely, the type and speed of the central processing unit, memory size, operating system And a function of requesting relaying for a priority of performance and a user computer having the highest performance being selected as a representative computer with reference to the number of streams currently being relayed ; A function of establishing and relaying a unicast connection to the representative computer for each group by the approval of the requested relay; And a computer readable recording medium having recorded thereon a program for realizing a function of designating a new representative computer by the rejection of the requested relay.

The present invention also provides a network system having a processor, the function of accepting and assigning an information transmission multicast address to a new user according to a connection request by a new user; If there is no existing group connected to the network, a new group is created, and a new user is added to the new computer's representative computer , where the representative computer is the data of each user computer function data transmitted when the user requests to connect to the network. Namely, a function of creating a priority for each performance by referring to the type and speed of the CPU, the memory size, the operating system, and the number of streams currently relayed, and designating the user computer having the highest performance as the representative computer ; A function of designating a representative of each group for the new user and transmitting the existing group connected to the network to the new user; And a program for creating a new group if the new user is not included in any existing group, and for realizing a function of transmitting the information for designating the new user to the representative computer of the new group to an existing information sender. Provide a computer readable recording medium.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a configuration diagram of an embodiment of a network to which the present invention is applied.

Environment to which the present invention is applied is as shown in FIG.

Six computers 105 to 110 connected to two different routers 101 and 102 participate in a multimedia conference to exchange multimedia information such as video, voice, and data in real time. At this time, each computer may stop the information transmission at any time or start receiving the information.

In general, each computer transmits information through a network in a multicast method and a unicast method. In an embodiment of the present invention, it is assumed that the router R1 101 supports the multicast scheme and the router R2 102 does not support the multicast scheme. Therefore, a multicast scheme can be used when exchanging information between the computers 105, 106 and 107 connected to the router R1 101, and between the computers 108, 109 and 110 connected to the router R2 102. Unicast should be used when exchanging information.

In addition, a unicast method should be used when exchanging information between computers connected to the router R1 101 and the router R2 102. Therefore, multiple unicast connections must be established in order to exchange information in a multimedia conference where a computer connected to routers R1 101 and R2 102 joins.

An example of information transmission using such a unicast scheme is shown in FIG. 2.

2 is an exemplary view illustrating information transmission using unicast in a network to which the present invention is applied.

At this time, since the performance of the computers participating in the meeting is limited, the number of computers that can transmit information is limited. In addition, if the number of users participating in the meeting increases, the information cannot be transmitted to all participants.

3 is an exemplary diagram of information transmission using a method for transmitting information between networks through network grouping according to the present invention.

In the present invention, to deliver information in a multimedia conference, the final information receiving computer participating in the conference is grouped by the router unit to which the computer is connected.

In addition, when a specific computer transmits information to a computer included in another group, the representative computer for each group is determined for the specific computer, and the information is transmitted to these representative computers so that the representative computer relays the information. Send it.

As shown in FIG. 3, the computers 105, 106, and 107 connected to the router R1 101 exchange information by multicast, and the computers 105, 106, and 107 connected to the router R1 101. In order to exchange information between the routers R2 102 and the computers 108, 109, 110 connected, the computer PC1-1 105 is represented by the server for its own group 2 (groups connected to the router R2). It sends its information to PC2-1 108. Then, the representative computer PC2-1 108 that has received the information from the PC1-1 105 receives the PC2-2 109 and the PC2-3 110 included in its group from the PC1-1 105. Relay the received information.

In the same way, PC1-2 (106) to representative computer PC2-2 (109), PC1-3 (107) to representative computer PC2-1 (108), and PC2-1 (108) to representative computer PC1-3 ( 107, PC2-2 109 transmits to representative computer PC1-3 107, and PC2-3 110 sends to representative computer PC1-3 107.

PC2-1 108, the representative computer for Group 2 of PC1-3 (107), relays the information received from PC1-3 (107) to PC2-2 (109) and PC2-3 (110). In addition, PC2-2 109, which is a representative computer for Group 2 of PC1-2 106, relays the information received from PC1-2 106 to PC2-1 108 and PC2-3 110. . When PC2-1 108 or PC2-2 109 relays information as a representative computer, router R2 102 does not support multicast, so other groups included in the group to which it belongs (group connected to router R2) If the number of computers is small, use the unicast method. If the number of computers is large, use the broadcast method.

Representative computers PC 1-3 (107) of group 1 (group connected to router R1) for PC2-1 108, PC2-2 109, and PC2-3 (110) are connected to router R1 (which supports multicast). 101), it uses a multicast method when relaying information.

4 is a diagram illustrating an operation of adding a new user in a method of transmitting information between networks through network grouping according to the present invention.

4 is a representative computer for Group 2 when PC1-1 newly joins a conference while PC1-2, PC1-3, PC2-1, PC2-2, and PC2-3 are participating in the meeting. Described the process of transmitting.

The new conference participant PC1-1 (105) makes a connection request to the server (1). The server accepts the connection request (2). In this case, when there is a limit on the number of participants in the meeting or in a private meeting, the server may reject the connection request, but this is not considered in the present invention.

When the server accepts the connection request, it transmits the user information and group information participating in the conference together with the representative computer settings for each group (2). PC1-1 (105), which has designated PC2-1 108 as the representative computer for its group 2 through step 2, makes a request for information relay to PC2-1 (108), and transmits information to PC2-1 (108). (3).

At this time, the representative computer PC2-1 108 is performing a program other than the conference program or relaying with another computer, and rejects the request for information relay when there is insufficient time available for the central processing unit for information relay (4). ). PC2-1 108 transmits the relay request rejection packet to PC1-1105, and terminates the connection with PC1-1105.

PC1-1105 receives the relay request rejection packet or, when the connection with the representative computer PC2-1 108 is terminated (4), makes a new representative computer designation request to the server (5). Accordingly, the server designates a new representative computer by sending a packet specifying PC2-3 110 as a new representative computer to PC1-1 105 (6).

Then, PC1-1 105 starts relaying request and information transfer to PC2-3 110, which is a newly designated representative computer (7). The PC2-3 110 accepts the relay request (8), and relays the information received from the PC1-1 (105) to the PC2-1 108 and the PC2-2 (109).

If the PC1-1105 does not receive the relay request accept packet from the PC2-3 110, but the connection is not terminated, the PC1-1 105 continues to transmit information.

5 is a flowchart illustrating an embodiment of a method for transmitting information between networks through network grouping according to the present invention.

As shown in FIG. 5, the present invention provides a repetition of the same information in a network environment in which various information including video, audio, and data (text chat, whiteboard related information, etc.) such as a multimedia conference are simultaneously transmitted to multiple users. In order to reduce transmission and to allow video, audio, and data information to be synchronized with each other and to be transmitted to the user computer, the user computers connected to the network are divided into groups (51). At this time, since the group classification is based on the router or gateway to which the user computer is connected, the user computers connected to the same router or gateway belong to the same group.

For the grouped user computers, a representative computer for each group is selected (52). The representative computer of the group is designated by referring to each user computer function data sent to the server when the user computer requests a network connection. The server creates the performance priority of the user computer based on the user computer function data and designates the best performing user computer as the representative computer. At this time, the function data of the user computer includes the type and speed of the central processing unit, the memory size, the operating system, and the number of streams currently being relayed. A score is given for each item of the function data of the user's computer, and the user computer with the highest score is registered as a high performance user computer.

Then, the information is transmitted through the selected representative computer (53). In the transmission of information, there are intra-group transmissions and intra-group transmissions. In the group transmission, a multicast method is used for a group that supports multicast, and unicast or broadcast for a group that does not support multicast. To transmit. In the transmission between groups, transmission between groups that support multicast uses a multicast address, and transmission with a group that does not support multicast is relayed through a unicast setting with a representative computer. A more detailed description thereof will be made with reference to FIG. 6.

In addition, it is necessary to manage data transmission so that data transmission is transmitted without interruption in an environment where the connected user computer is arbitrarily changed. To this end, the server periodically receives a packet indicating the operating state of the representative computer from the representative computer to check whether the representative computer is in normal operation (54).

As a result, if the packet is not received for a certain period of time and is not in normal operation, another computer is designated as the representative computer, and the user computer using the representative computer is notified of the new representative computer designation, and the information is transmitted through the new representative computer. Let this be done.

As a result of the check, in case of normal operation, information transmission is performed through the representative computer.

6 is a flowchart illustrating an embodiment of a new user added in a method of transmitting information between networks through network grouping according to the present invention.

First, a new user connects to the server (61) and transmits his or her information (62).

In operation 63, the user, group information, and representative computer information for each group of the new user are received from the server.

Then, a request is made to the representative computer for the received information (64). The representative computer receiving the relay request refers to the present time of use of the central processing unit and, if possible, accepts the relay request. If it cannot relay, it rejects the relay request and terminates the connection.

If the approval of the relay request is confirmed (65), if the approval is established, unicast connection with the representative computer (68) and transmits information (69).

If the approval of the relay request is confirmed (65), if not approved, the server is requested to designate a new representative computer (66), and the server designates a new representative computer and transmits the information (67). Proceed to 64.

7 is a flowchart illustrating an exemplary operation of a representative computer at the time of a relay request in the method of transmitting information between networks through network grouping according to the present invention.

When the first information sender requests a unicast connection and information relay at any time (71), it checks the work currently being performed (72), and is executing another program or relaying with another computer. If the central processing unit available time is insufficient, it is determined that relaying is not possible (73) and transmits a relay request rejection packet (76) and terminates the connection with the user (77) to reject the information relay request.

If it is determined that the operation is currently being performed (72), and if it is determined that the relay is possible (73), the relay request acceptance packet is transmitted to the first information sender (74) and information relay is performed (75). If the information received through the unicast connection is available to the multicast method, it is sent to the multicast address included in the header so that other receivers connected to the same network can receive the information. If multicast is not possible, relay is performed using unicast or broadcast depending on the number of information receivers belonging to the same group. When another information sender receives the information transmitted by the multicast method, the information is displayed on the screen so that the user can view the information sender's video, listen to the voice, and have a data meeting such as a chat or a whiteboard. When a meeting participant requests to end the meeting or requests to reject information transmission and reception, it is sent to the server.

8 is a flowchart illustrating an embodiment of a server in a method of transmitting information between networks through network grouping according to the present invention.

First, when a new user requests a connection (81), it accepts the connection request and assigns an information transfer multicast address to the new user (82). The assignment is notified to the client.

If an existing group does not exist (83), a new group is created, and a new user is designated as the representative computer of the new group (84).

If an existing group exists (83), the representative of each group for the new user is designated and transmitted to the new user (85).

If the new user is not included in any existing group (86), a new group is created, and the information for designating the new user to the representative computer of the new group is transmitted to the existing information sender. In this case, the criterion for determining which group the new user is in is the network information to which the new subscriber is connected. For example, if a router to which a new subscriber is connected does not match a router of an existing group, a new group is created. By sending the group information to the new group to inform that the new user is the representative computer of the group, the existing information sender transmits the information to the new representative computer.

When an arbitrary user requests a meeting end request or an information transmission / reception rejection at any time, an interrupt is used to update the group list and the information sender list, and the updated new information is distributed to the remaining users.

Information exchanged in multimedia conferences includes video, audio and data. These information must be presented to the information recipient at the same time. To this end, when the information sender transmits the information, the header adds a cookie indicating the time at which the information is generated in each packet and a cookie identifying the packet creator. When sending whiteboard or text chat information, the packet should be configured and transmitted so that even if it is deleted, it does not affect the progress of the entire conference. For example, when sending whiteboard keyboard click information, the ALT key down event and the ALT key up event should be sent in the same packet so that the computer does not malfunction even if one packet is not delivered to the recipient of the final information. The representative computer relaying the information extracts the time stamp of the received packet and the packet creator cookie. The packet generator cookies of the packets received through different unicast connections are compared to compare the time stamps when the packet generator cookies are the same. If the time difference is more than a certain amount of difference, the late packet is not transmitted and the next packet is received and compared. If the time difference is less than a certain amount, information is transmitted. The final information receiver reconstructs the packet and, if there is a packet not received, discards the entire packet.

As described above, the method of the present invention may be implemented as a program and stored in a recording medium (CD-ROM, RAM, floppy disk, hard disk, magneto-optical disk, etc.) in a computer-readable form.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The present invention as described above, by designating a representative computer to relay the information transmitted in the environment of multimedia information transmission, such as a multimedia conference, by re-transmitting the information to other computers belonging to the same group to reduce the amount of information transfer, information exchanged in the meeting The effect is that they can be simultaneously presented to the recipient of the final information.

Claims (11)

In the information transmission method between networks, Dividing the users connected to the network into groups based on a router or a gateway to which the users are connected; Selecting, for the divided groups, a representative computer of each group for each user connected to a network; And When transmitting information between networks, the method comprising the step of transmitting through the selected representative computer, When selecting the representative computer, each user computer function data transmitted when the user requests to connect to the network , wherein the user computer function data is the type and speed of the central processing unit, memory size, operating system and the current relay A method for transmitting information between networks through network grouping, comprising: selecting the number of streams and a priority for each performance and selecting a user computer having the best performance as a representative computer. The method of claim 1, In order to manage data transmission, periodically receiving a packet indicating the operating state of the representative computer from the representative computer to check whether the representative computer is in normal operation Method for transmitting information between networks through network grouping further comprising. delete delete The method according to claim 1 or 2, Data transmission using the representative computer, Intra-group transmission and intra-group transmission are divided into multicast transmission for the group that supports multicast, unicast or broadcast transmission for the group that does not support multicast. In the group-to-group transmission, the grouping that supports multicast uses the multicast address, and the grouping that does not support the multicast relays the transmission through the unicast setting with the representative computer. Method of transmitting information between networks via a network. In the information transmission method between networks, When the new user connects to the network, transmitting his information and receiving the network information; Requesting relay to a representative computer of each group included in the received network information; Establishing and relaying a unicast connection to the representative computer for each group by the approval of the requested relay; And Designating a new representative computer by refusing authorization for the requested relay, When selecting the representative computer, each user computer function data transmitted when the user requests to connect to the network , wherein the user computer function data is the type and speed of the central processing unit, memory size, operating system and the current relay A method for transmitting information between networks through network grouping, comprising: selecting the number of streams and a priority for each performance and selecting a user computer having the best performance as a representative computer. In the information transmission method between networks, In accordance with the connection request by the new user, accepting it and assigning the information transmission multicast address to the new user; If there is no existing group connected to the network, creating a new group and designating a new user as a representative computer of the new group; If there is an existing group connected to the network, designating a representative for each group for the new user and transmitting the same to the new user; And If the new user is not included in any existing group, creating a new group, and transmitting information for designating the new user to a representative computer of the new group for an existing information sender, When selecting the representative computer, each user computer function data transmitted when the user requests to connect to the network , wherein the user computer function data is the type and speed of the central processing unit, memory size, operating system and the current relay A method for transmitting information between networks through network grouping, comprising: selecting the number of streams and a priority for each performance and selecting a user computer having the best performance as a representative computer. The method of claim 7, wherein When a predetermined user requests to end a meeting or requests to reject transmission or reception of information at a predetermined time, interrupting the request, updating the group list and the information sender list, and distributing the updated new information to the remaining users. Method for transmitting information between networks through network grouping further comprising. In a network system having a processor, A function of dividing a user connected to a network into groups based on a router or a gateway to which the user is connected; For each of the divided groups, a representative computer of each group for each user connected to the network is selected. In this case, when selecting a representative computer, each user computer function data transmitted when the user requests to connect to the network, Namely, the priority and performance of the central processing unit, the size of the memory, the operating system, and the number of streams being relayed, and selecting the best performing user computer as the representative computer ; And Transmitting information through the selected representative computer when transmitting information between networks A computer-readable recording medium having recorded thereon a program for realizing this. In a network system having a processor, Transmitting new information and receiving network information when a new user connects to the network; Representative computer for each group included in the received network information, wherein the representative computer, each user computer function data transmitted when the user makes a connection request to the network, namely, the type and speed of the central processing unit, memory size, operating system And a function of requesting relaying for a priority of performance and a user computer having the highest performance being selected as a representative computer with reference to the number of streams currently being relayed ; A function of establishing and relaying a unicast connection to the representative computer for each group by the approval of the requested relay; And Ability to designate a new representative computer by denying authorization for the requested relay A computer-readable recording medium having recorded thereon a program for realizing this. In a network system having a processor, According to the connection request by the new user, accepting it and assigning the information transmission multicast address to the new user; If there is no existing group connected to the network, a new group is created, and a new user is added to the new computer's representative computer , where the representative computer is the data of each user computer function data transmitted when the user requests to connect to the network. Namely, a function of creating a priority for each performance by referring to the type and speed of the CPU, the memory size, the operating system, and the number of streams currently relayed, and designating the user computer having the highest performance as the representative computer ; A function of designating a representative of each group for the new user and transmitting the existing group connected to the network to the new user; And If the new user is not included in any existing group, creating a new group and transmitting information for designating the new user to the representative computer of the new group for the existing information sender; A computer-readable recording medium having recorded thereon a program for realizing this.

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