KR20020000442A - Multi connection method using multi processing at point to point protocol - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a multiple connection method using multiple processing in two point-to-point protocols.

2. The technical problem to be solved by the invention

The present invention provides a multi-connection method that enables one-to-many (1: N) connection by driving a sub state with multi processing according to a time scheduler in two point-to-point protocols (PPP). And a computer readable recording medium having recorded thereon a program for realizing the method.

3. Summary of Solution to Invention

The present invention includes a first step of transitioning to a Establish state when a connection request of a user is received in a dead state; A second step of performing a link setting using a link control protocol in the setting state to transition to the dead state if the link setting fails and to a network state if the link setting is successful; A third step of transmitting a higher layer message using a network control protocol in the network state and then transitioning to a terminate state when the transmission is completed; In order to enable soft handoff in a wireless communication network, when a new connection request is received in the network state, a sub-state is driven to perform multi processing (1: 1). N) a fourth step of enabling a connection; And a fifth step of transitioning to the dead state after repeatedly disconnecting as many as the number of multiple connections in the Terminate state.

4. Important uses of the invention

The present invention is used in communication networks and the like.

Description

Multi connection method using multi processing at point to point protocol

The present invention relates to a multi-connection method, and more particularly, to a multi-point (1: N) by introducing a concept of multi processing in a two-point-to-point protocol (PPP) having a conventional one-to-one (1: 1) connection. The present invention relates to a multiple connection method for enabling connection, and a computer-readable recording medium having recorded thereon a program for realizing the method.

1 is a conceptual diagram for accessing an internet protocol (IP) network in a conventional next generation mobile communication (IMT-2000) system.

In the existing next generation mobile communication (IMT-2000) system as shown in FIG. 1, soft handoff is a great advantage, and serves as an excellent advantage in terms of call mobility, call quality and call stability. It was.

However, in the 3rd Generation Partnership Project (3GPP) and the 3rd Generation Partnership Project (3GPP2), two major mountain ranges of the international standardization conference on the next generation mobile communication system, all the connections between each system constituting the 3G mobile communication network are connected to the Internet protocol. The next-generation mobile communication network (hereinafter referred to as "ALL IP network") implemented through (IP: Internet Protocol) is discussed in detail. The standard for 2000 is expected to include specifications for implementing an ALL IP network.

2 is a conceptual diagram of a Point to Point Protocol (PPP) connection between a Packet Data Serving Node (PDSN) and a mobile terminal (MS) in an All IP network, and FIG. 3 is a base station (BTS) and a mobile terminal (BTS) in an All IP network. A conceptual diagram of a PPP connection between MSs).

As shown in FIG. 2, in order to apply the existing next generation mobile communication (IMT-2000) system to the All IP network, the concept of the existing wireless Internet protocol (Wireless IP) is introduced and accompanied by the mobile terminal (MS). : PPP connection is established between Mobile Station) and PDSN.

However, as defined by the International Engineering Task Force (IETF), the Point to Point Protocol (PPP) supports only one-to-one (1: 1) connection. Therefore, it is impossible to support soft handoff that requires one-to-many connection. Therefore, in order to change the existing next generation mobile communication (IMT-2000) system to All IP network, in order to utilize one of many advantages, Soft Handoff, PPP technology will be improved to enable one-to-many connection. There is a need.

In particular, as shown in FIG. 3, when the PPP peer with the mobile station MS goes down to the base station BTS in the All IP network, handoff occurs more frequently. In order to support soft handoff, there is a greater need to improve PPP technology to enable one-to-many connections.

Meanwhile, the current ALL IP network is being researched based on the existing mobile IP (MOBILE IP) and VOIP (Voice Over IP). At this time, MOBILE IP adopts a two-tier address system as an address translation scheme in the IP layer. The second address is a care-of address (COA) used for route allocation and delivery method, which is the first address, and a mobile host specific home that identifies the mobile address, which is the second address, and is used for session connection. It consists of an address (Home Address: static IP address).

At this time, the mobile host has a unique Internet address corresponding to the host name as a home address as a conventional fixed host, and at the same time, the mobile host has an address changed as the mobile host moves through the network as a COA. The COA is an address that has an actual delivery point of a packet.

In addition, the International Engineering Task Force (IETF) defines three components such as a mobile node, a home agent, and an external agent for a mobile IP service, and the operation thereof is described below with reference to FIG. 4. .

4 is an explanatory diagram illustrating packet routing to a mobile node under a conventional foreign agent, where “47” denotes an IP cloud.

As shown in FIG. 4, the mobile node is a host 43 supporting mobility services, and the mobile node can move between networks without changing its IP address, and with its static IP address, Can continue to communicate with other nodes.

And, the home agent (HA: Home Agent) 44 is an agent belonging to the mobile node's home network managing the current COA and home address of the mobile node, and receives a datagram from the host 43 which is the mobile node. In addition, the received datagram is tunneled through the IP cloud 47 and the router 45 and transmitted to the mobile terminal 46. In other words, the home agent 44 functions to tunnel the mobile node's datagram to the network to which the mobile node currently belongs when the mobile node is in an external network.

Next, a foreign agent (FA) 41 is an agent that grants a COA when the host 43, which is a mobile node, belongs to an external network, and assigns its IP address to the COA or a temporary IP address. It is possible. Accordingly, the foreign agent 41 provides routing services for the mobile nodes when the mobile node enters the service area of the mobile node, and detunes the datagrams sent by tunneling from the mobile agent's home agent 44. Send it to the node. And, for the datagram sent from the mobile node, the external agent 41 provides the existing gateway service.

That is, even when the mobile terminal 40 is under the external agent 41 rather than the home agent 44 as shown in FIG. 4, the host 43, which is a mobile node, still has the home terminal 44. A datagram is misidentified as being located in the home agent 44, and the home agent 44 tunnels the received datagram to the external agent 41 through the IP cloud 47. Agent 41 finally sends the datagram to mobile terminal 40.

However, the prior art as described above is not made in consideration of the case where the mobile terminal is used in a mobile environment, such as a portable terminal. Therefore, various problems may occur when the technologies are used in the portable terminal. In the case of soft handoff, there is a problem that the existing PPP technology is not supported.

The reason is that datagrams are sent over the connection between the mobile terminal and the external agent based on the PPP connection. This is because PPP can only support one-to-one (1: 1) connections and cannot support the one-to-many (1: N) connections required for soft handoff. That is, each peer of the PPP becomes a mobile terminal and an external agent, and there is only one connection between them, so soft handoff between the foreign agents is not supported. Accordingly, there is a need to improve PPP technology to enable one-to-many connections for soft handoff.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and in a two-to-point protocol (PPP), a sub-state is driven by multiprocessing according to a time scheduler. N) It is an object of the present invention to provide a multi-connection method enabling a connection and a computer-readable recording medium recording a program for realizing the method.

1 is a conceptual diagram for accessing an Internet Protocol (IP) network in an existing Next Generation Mobile Communication (IMT-2000) system.

2 is a conceptual diagram of a Point to Point Protocol (PPP) connection between a PDSN and a mobile terminal (MS) in an All IP network.

3 is a conceptual diagram of a PPP connection between a base station (BTS) and a mobile terminal (MS) in an All IP network.

4 is an explanatory diagram for explaining packet routing to a mobile node under a conventional foreign agent.

5 is a state transition diagram showing a state of a conventional Point to Point Protocol (PPP).

6 is a flow diagram of an embodiment of a multiple connection method using multiple processing in a two point-to-point protocol in accordance with the present invention.

* Explanation of symbols for the main parts of the drawings

40,46: mobile terminal 42,45: router

43: Host 44: Home Agent

47: IP Cloud

The method of the present invention for achieving the above object is a multiple connection method applied to a device for establishing multiple connections by using multiple processing in the two point-to-point protocol, when the user's connection request in the dead state Transitioning to a Establish state; A second step of performing a link setting using a link control protocol in the setting state to transition to the dead state if the link setting fails and to the authentication state if the link setting is successful; A third step of performing authentication on the connection setting of the user in the authenticated state and transitioning to an end state if authentication fails, and transitioning to a network state if authentication is successfully performed; A fourth step of transmitting a higher layer message using a network control protocol in the network state and then transitioning to the terminate state when the transmission is completed; In order to enable soft handoff in a wireless communication network, when a new connection request is received in the network state, a sub-state is driven to perform multi processing (1: 1). N) a fifth step of enabling a connection; And a sixth step of transitioning to the dead state after repeatedly disconnecting as many times as the number of multiple connections in the terminate state.

In addition, another method of the present invention is a multiple connection method applied to a device for establishing multiple connections by using multiple processing in a two-point protocol, when the user's connection request is received in a dead state (Establish) A first step of transitioning to a state); A second step of performing a link setting using a link control protocol in the setting state to transition to the dead state if the link setting fails and to a network state if the link setting is successful; A third step of transmitting a higher layer message using a network control protocol in the network state and then transitioning to a terminate state when the transmission is completed; In order to enable soft handoff in a wireless communication network, when a new connection request is received in the network state, a sub-state is driven to perform multi processing (1: 1). N) a fourth step of enabling a connection; And a fifth step of transitioning to the dead state after repeatedly disconnecting as many as the number of multiple connections in the terminate state.

In addition, another method of the present invention is a multiple connection method applied to a device for transmitting data using a two-point protocol, in order to enable soft handoff in a wireless communication network, When a new connection request comes in from the network state of the protocol (PPP), two-point protocol is executed to drive multiple states by driving a sub-state according to a time scheduler to perform multi-processing. (PPP) is changed to enable one-to-many (1: N) connection.

On the other hand, the present invention, a multi-connected device having a processor, a multi-point protocol using a multi-point protocol, the first function for transitioning to the (Establish) state when a user's connection request in a dead state (dead); A second function of performing a link setting using a link control protocol in the setting state to transition to the dead state if the link setting fails and to the authentication state if the link setting is successful; A third function of performing authentication with respect to a user's connection setting in the authenticated state to transition to an end state if authentication fails, and transitioning to a network state if authentication is successfully performed; A fourth function of transitioning to the terminate state when the transmission is completed after transmitting an upper layer message using a network control protocol in the network state; In order to enable soft handoff in a wireless communication network, when a new connection request is received in the network state, a sub-state is driven to perform multi processing (1: 1). N) a fifth function to enable connection; And a computer-readable recording medium having recorded thereon a program for realizing a sixth function of transitioning to the dead state after repeatedly disconnecting as many times as the number of multiple connections in the Terminate state.

In addition, the present invention provides a multi-connected device having multiple processors of a two-point protocol having a processor, comprising: a first function of transitioning to a Establish state when a connection request of a user is received in a dead state; A second function of performing a link setting using a link control protocol in the setting state to transition to the dead state if the link setting fails and to a network state if the link setting is successful; A third function of transitioning to a terminate state when the transmission is completed after transmitting an upper layer message using a network control protocol in the network state; In order to enable soft handoff in a wireless communication network, when a new connection request is received in the network state, a sub-state is driven to perform multi processing (1: 1). N) a fourth function to enable connection; And a computer-readable recording medium having recorded thereon a program for realizing a fifth function of transitioning to the dead state after repeatedly disconnecting as many as the number of multiple connections in the Terminate state.

As described above, the present invention proposes a method of improving the function of the existing PPP to have a one-to-many (1: N) function. Generally, PPP itself is a one-to-one (1: 1) connection, so one-to-many (1: N) connection is not possible. Therefore, in the present invention, the PPP connection process is repeated a plurality of times to enable one-to-many (1: N) connection.

Looking at this in more detail, in the present invention, a sub-state is driven by multi-processing according to a time scheduler, thereby enabling a plurality of connections.

That is, the sub state has a sub establishment state and a sub authentication state, so that another PPP session is established in the network state of the main state. Catch with Multi. In this case, multi processing is possible, operation is performed using a time scheduler, and the terminal is repeated according to the number of multiples in the terminating state of the main state. To disconnect. By doing this, one-to-many connection can be made using PPP of one-to-one connection, and thus soft handoff is also possible.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention is one technology by changing the state processing procedure of the existing PPP technology to enable one-to-many connection. First, referring to FIG. 5, the existing PPP state processing procedure is as follows.

5 is a state transition diagram showing a state of a conventional Point to Point Protocol (PPP).

As shown in FIG. 5, PPP initiates link establishment state 51 and remains in dead state 50, for example, when an external event such as carrier detection and network manager indicates that the physical layer is available.

In the link establishment state 51, if the link establishment fails, the process goes to the dead state 50, or the link establishment is performed using the link control protocol and the link is opened.

Next, PPP may proceed to the authentication state 52. The authentication state 52 is optional and the Peer performs authentication using a specific authentication protocol. If the authentication succeeds or there is no authentication state 52, then PPP proceeds to network state 53 to complete each network layer protocol. The network state 53 is performed by an appropriate network control protocol.

Finally, when the network state 53 is completed or the authentication in the authentication state 52 fails, the PPP proceeds to an end state 54 to terminate the PPP process, which is performed in the authentication state 52. If this fails and proceeds to the end state 54, it ends without configuring a network layer protocol. PPP then proceeds to the dead state 50 and stays in the dead state 50 as long as there are no events.

As described above, the existing PPP session goes through the link control protocol state, then goes through the authentication state, and finally sends the network datagram after going through the network control state. This network datagram undergoes PPP encapsulation and PPP decapsulation during each transmission.

6 is a flowchart illustrating an embodiment of a multiple connection method using multiple processing in a two-point protocol according to the present invention.

As shown in FIG. 6, in order to improve the PPP which has not been possible in the conventional one-to-many (1: N) connection, the present invention drives a sub-state with multi-processing to enable multiple PPP connections. The present invention relates to a multiple connection method. That is, the present invention provides a dead state 61, an established state 62, an authenticated state 63, a network state 64, and a terminate state. 68, a Sub Establish State 65, a Sub Authenticate State 66, and a Sub Terminate State 67 in the network state 64. It includes.

At this time, the Establish State 62 functions to connect and control the PPP link, and the Authenticate State 63 authenticates whether or not the connection is possible, and the network state ( Network State (64) manages the network connection when the PPP connection is completed, and when a new connection request comes in, the sub state is turned to turn on the sub state such as the setting state 62 and the authentication state 63. 65) and the sub-authentication state 66 and process it as Multi. In addition, if a connection termination request is received while being connected in plural numbers, the terminal enters the sub-termination state 67 to terminate the connection. In the Terminate State 68, the connection is disconnected, which is also repeated a plurality of times according to the number of Multis.

Looking at the processing procedure for the above-described multiple connection method in more detail as follows.

First, in the dead state 61, when a user's connection request comes in, the user transitions to the establish state 62.

Subsequently, in the setting state 62, if the link setting is performed by using the link control protocol, the link state is changed to the dead state 61 without establishing the link if the link setting fails. Open and transition to authentication state 63.

After that, the authentication state 63 authenticates whether a PPP connection is possible for the user's connection establishment request. If authentication fails, the terminal transitions to the termination state 68 without establishing a connection. Transition to state 64. At this time, the authentication state 63 is optional.

Thereafter, in the network state 64, a higher layer message is transmitted using a network control protocol and a PPP connection is maintained.

If a new PPP connection request is received in the network state 64, the sub-state is driven to perform multi-processing.

That is, in the sub setting state 65, if a link setting fails by performing a new link setting using the link control protocol, the state changes to the network state 64 without establishing a connection, and if the link setting is successful, The link is opened and transitions to subauthentication state 66.

In the sub-Authenticate state 66, the PPP connection is authenticated to the user's new connection establishment request, and the network state 64 is transitioned. At this time, the sub-authentication state 66 is optional.

When a disconnection request is received in the network state 64 that is connected in plural numbers, the sub termination state 67 is driven to disconnect the PPP connection.

If the network state 64 is completed, the network state 64 transitions to the Terminate state 68 after disconnecting. Thereafter, in the terminate state 68, the PPP connection is repeatedly disconnected by the number of multiple connections, and then proceeds to the dead state 61 and stays in the dead state 61 while there is no predetermined event.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes can be made in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

As described above, the present invention is a soft hand when the base station (BTS) is the end of the PPP in the configuration of the next generation mobile communication (IMT-2000) system based on All IP currently considered as a major standardization issue in 3GPP and 3GPP2. It can be used as a method to enable the soft handoff process. That is, the present invention can effectively support soft handoff when a base station becomes a PPP peer of a mobile communication terminal in an All IP network.

In addition, the present invention is to facilitate the soft handoff (Soft Handoff) in the All IP network, as described above, it is possible to increase the quality of communication service in the All IP network, which has the effect that can lead to an increase in subscribers soon.

Claims (7)

In a multiple connection method applied to a device for establishing multiple connections using multiple processing in a two-point protocol, A first step of transitioning to a Establish state when a connection request of a user is received in a dead state; A second step of performing a link setting using a link control protocol in the setting state to transition to the dead state if the link setting fails and to the authentication state if the link setting is successful; A third step of performing authentication on the connection setting of the user in the authenticated state and transitioning to an end state if authentication fails, and transitioning to a network state if authentication is successfully performed; A fourth step of transmitting a higher layer message using a network control protocol in the network state and then transitioning to the terminate state when the transmission is completed; In order to enable soft handoff in a wireless communication network, when a new connection request is received in the network state, a sub-state is driven to perform multi processing (1: 1). N) a fifth step of enabling a connection; And A sixth step of repeatedly transitioning to the dead state after repeatedly disconnecting as many as the number of multiple connections in the terminate state; Multiple connection method using multiple processing in two point-to-point protocol comprising a. In a multiple connection method applied to a device for establishing multiple connections using multiple processing in a two-point protocol, A first step of transitioning to a Establish state when a connection request of a user is received in a dead state; A second step of performing a link setting using a link control protocol in the setting state to transition to the dead state if the link setting fails and to a network state if the link setting is successful; A third step of transmitting a higher layer message using a network control protocol in the network state and then transitioning to a terminate state when the transmission is completed; In order to enable soft handoff in a wireless communication network, when a new connection request is received in the network state, a sub-state is driven to perform multi processing (1: 1). N) a fourth step of enabling a connection; And A fifth step of transitioning to the dead state after repeatedly disconnecting as many as the number of connected in the Terminate state Multiple connection method using multiple processing in two point-to-point protocol comprising a. In the multiple connection method applied to a device transmitting data using a two-point protocol, In order to enable soft handoff in the wireless network, when a new connection request is received in the network state of the two point-to-point protocol (PPP), the sub-state is driven according to the time scheduler. Multi-processing is used to change the two point-to-point protocol (PPP) to drive multiple states to enable one-to-many (1: N) connections. Multiple connection method. The method according to claim 1 or 3, The process of driving the sub-state to perform multi-processing, When a new connection request is received in the network state, a new link setup is performed using a link control protocol in the sub setup state, and when the link setup fails, the state transitions to the network state. A seventh step of transitioning to an authenticated state; An eighth step of authenticating and requesting a new connection establishment request in the sub-authentication state; And A ninth step of disconnecting by driving a sub-termination state when a disconnection request is received in the plurality of network states connected; Multiple connection method using multiple processing in two point-to-point protocol comprising a. The method of claim 2 or 3, The process of driving the sub-state to perform multi-processing, A sixth step of, when a new connection request is received in the network state, performing a new link establishment using a link control protocol in a sub configuration state; And A seventh step of disconnecting by driving a sub-termination state when a disconnection request is received in the network state in which a plurality of connections are made; Multiple connection method using multiple processing in two point-to-point protocol comprising a. With a processor, a multi-connected device using multiple processing of two point-to-point protocols A first function of transitioning to a Establish state when a connection request of a user is received in a dead state; A second function of performing a link setting using a link control protocol in the setting state to transition to the dead state if the link setting fails and to the authentication state if the link setting is successful; A third function of performing authentication with respect to a user's connection setting in the authenticated state to transition to an end state if authentication fails, and transitioning to a network state if authentication is successfully performed; A fourth function of transitioning to the terminate state when the transmission is completed after transmitting an upper layer message using a network control protocol in the network state; In order to enable soft handoff in a wireless communication network, when a new connection request is received in the network state, a sub-state is driven to perform multi processing (1: 1). N) a fifth function to enable connection; And A sixth function of transitioning to the dead state after repeatedly disconnecting as many as the number of multiple connections in the terminate state A computer-readable recording medium having recorded thereon a program for realizing this. With a processor, a multi-connected device using multiple processing of two point-to-point protocols A first function of transitioning to a Establish state when a connection request of a user is received in a dead state; A second function of performing a link setting using a link control protocol in the setting state to transition to the dead state if the link setting fails and to a network state if the link setting is successful; A third function of transitioning to a terminate state when the transmission is completed after transmitting a higher layer message using a network control protocol in the network state; In order to enable soft handoff in a wireless communication network, when a new connection request is received in the network state, a sub-state is driven to perform multi processing (1: 1). N) a fourth function to enable connection; And A fifth function of transitioning to the dead state after repeatedly disconnecting as many as the number of multiple connections in the terminate state A computer-readable recording medium having recorded thereon a program for realizing this.