KR20010025940A - Method for Providing Satellite Internet Service by Tunneling - Google Patents

Abstract

PURPOSE: A satellite Internet service transmission method using tunneling is provided to transmit and receive a data more effectively and stably to and from a satellite Internet subscriber by providing tunneling to client initiated tunnel server, being allocated an IP address to be routed from the client initiated tunnel server to the satellite Internet, being connected to a host of the existing Internet to request a data and transmitting the data responded from the host through the satellite to the original subscriber. CONSTITUTION: The first subscriber(1) generates a tunnel to the internal client initiated tunnel server(12) of a satellite Internet gateway(6) through a subscriber authentication system(13), receives an IP address different from an address used in the existing Internet and requests a data from a host(16). In response, the host transmits a data to a satellite antenna of the satellite Internet subscriber(1) through a satellite(7). If the second subscriber(2) receives an IP address used in the existing Internet from a network access server(NAS) through a subscriber authentication system(13) and uses a satellite Internet during a data transmission and receiving through a PSTN/ISDN without using an existing satellite, he or she connects to the client initiated tunnel server(12) , forms a client initiated tunnel(10) from the subscriber terminal(2) to the client initiated tunnel server(12) and transmits a data to the satellite antenna of the satellite Internet subscriber(2). In case of a satellite Internet subscriber using a LAN, if there is no disturbance in a satellite network, the subscriber connects to a host(16) on the existing Internet by using an IP assigned from the satellite Internet, and a data transmitted from the host is transmitted to the satellite LAN Internet subscriber through the satellite(7). If a disturbance occurs in the satellite network, a LAN-to-LAN tunnel router(22) forms a tunnel(11) with a LAN server(3) of the satellite LAN subscriber, through which a data is transmitted to the host(16) of the existing Internet.

Description

Satellite Internet Service Transmission Method using Tunneling {Method for Providing Satellite Internet Service by Tunneling}

The present invention relates to a method for providing satellite Internet service using a tunneling technique for providing network redundancy and scalability for a LAN subscriber and a PSTN / ISDN subscriber using the satellite Internet. And a tunneling method, the present invention relates to a satellite Internet service transmission method using tunneling for transmitting and receiving data more efficiently and stably to a satellite Internet subscriber than the conventional method.

First, the terms used to more specifically understand the invention of the satellite Internet and the tunneling method are defined as follows.

Satellite Internet means that the data can be transmitted to the subscriber who owns the satellite receiving antenna by using the satellite. The data transmission refers to the existing Internet.

A network access server (NAS) refers to a device that plays a role of allocating a PPP (Point to Point Protocol) service and a tunnel to a PSTN / ISDN subscriber.

Tunneling is a means of transmitting and hiding information actually used in a public data packet using the Internet, and refers to a function of transmitting to a subscriber. The IP address assigned in tunneling refers to the IP address given by the destination gateway.

Satellite internet gateway refers to a device that serves as a gateway and a tunnel server of satellite internet services.

Client Initiated Tunnel Server refers to a device that creates a tunnel to a specific domain by checking the ID and password for the tunnel configuration required by the subscriber.

A domain is an area where any network policy or routing protocol is used.

A LAN-to-LAN tunnel router is a device that can route IP to the LAN and the ability to create tunnels on any LAN.

Network redundancy means a method for securing a separate routing area for satellite Internet LAN subscribers when there is an error in satellite service in expansion and use of an IP address area.

As a data transmission method using the satellite Internet which has been recently proposed, two methods can be mentioned as a method for accommodating subscribers to the satellite Internet.

In the first data transfer method, as shown in FIG. 2, a dedicated line 14 passing through a satellite internet gateway 6 is established for a satellite internet subscriber 3 using a LAN and is assigned an IP address of a satellite internet domain. The host 16 requests a packet to the host 16, and the host 16 transmits the requested packet data to the source IP address (satellite internet domain) and transmits it to the LAN subscriber 3 through the satellite. In such a data transmission / reception scheme, the subscriber LAN has to establish a separate dedicated line 14, which requires a considerable cost. This method of data delivery has many limitations, especially in the expansion and use of IP address ranges, redundancy is difficult in case of satellite service failures, and requires the service manager to assign and manage IP for satellite Internet LAN subscribers (3). do. In addition, such a method does not consider a method of accommodating satellite Internet for PSTN / ISDN subscribers.

In the second data transfer method, as shown in FIG. 3, the subscriber does not need to use a leased line as compared with FIG. 2, but the host transmits data requested by the LAN subscriber to the host 16 to the satellite Internet gateway 6. And it is transmitted to the satellite Internet subscribers (1, 2, 3) through the satellite (7). As shown in FIG. 3, it is very difficult to provide network redundancy to the satellite Internet subscribers 1, 2, and 3 due to the abnormalities of satellite services. In addition, in order to accommodate satellite Internet subscribers 15 using PSTN / ISDN, NAS 4 equipment needs to be installed separately from the existing Internet, resulting in increased cost and management complexity and network redundancy.

Therefore, the two data transmission methods described in FIGS. 2 and 3 require high cost and network duplication, and the network duplication cannot be avoided by configuring the PSTN / ISDN subscribers separately from the existing method used for the Internet. . Therefore, this method makes it difficult to expect network redundancy and utility.

In order to solve the above problems, the present invention proposes a continuity of IP routing to a satellite internet gateway to a satellite internet subscriber by using tunneling to provide a service provider with a satellite Internet service transmission using tunneling to solve a problem of cost and network redundancy. The method is a first object.

In addition, a second object of the present invention is a method for transmitting satellite Internet service using tunneling, which is provided by a service provider to a satellite Internet subscriber using PSTN / ISDN without changing the existing network.

1 is a configuration diagram for providing a service using a tunneling protocol to a satellite Internet service using a PSTN and an Internet dedicated line in the manner proposed by the present invention;

FIG. 2 is a block diagram of providing an Internet service by extending a dedicated line to a satellite Internet gateway in a local area network (LAN) according to the prior art.

Figure 3 provides a service by configuring a separate NAS to accommodate satellite Internet subscribers using PSTN / ISD in addition to providing Internet services to satellite LAN subscribers by different routing policy for the satellite subscriber domain according to the prior art Diagram.

<Description of the code | symbol about the principal part of drawing>

1, 2: Satellite internet subscriber using PSTN / ISDN

(1: Use NAS Initiated Tunneling, 2: Use Client Initiated Tunneling)

3: Satellite internet subscriber using LAN server

(Accept enterprise LAN using LAN-to-LAN tunnel)

4: NAS (Network Access Server) 5: IP Dedicated Router

6: satellite internet gateway 7: satellite

8: satellite radio wave transmission device

9: NAS Initiated Tunnel 10: Client Initiated Tunnel

11: LAN-to-LAN Tunnel 12: Client Initiated Tunnel Server

13 Subscriber Certificate Server 14: Leased Line

15: Satellite internet subscriber using PSTN / ISDN (not using tunnel)

16: host on your existing Internet

17: Host access packet of subscriber not using tunnel

18, 20: host response packet

19: Host connection packet on existing Internet for subscriber using tunnel

21: Response packet from host on Internet for subscriber using tunnel

22: LAN-to-LAN tunnel router (router that accepts tunnels)

23: Satellite network error

In order to achieve the above object, the satellite Internet service transmission method using the tunneling of the present invention, first, tunneling 9 to the tunnel terminator 12 of the satellite Internet gateway to the satellite Internet subscriber using the PSTN / ISDN as shown in FIG. It receives the IP address that can be routed from the tunnel termination device 12 to the satellite Internet and requests data by accessing the host of the existing Internet, and the data returned from the host is transmitted to the original subscriber through the satellite. .

In addition, satellite Internet subscribers composed of LANs transmit satellite Internet service using tunneling, which suggests the redundancy of a network capable of delivering data 21 to satellite LAN subscribers through tunnel 11 when a satellite network malfunctions 23. Way.

The present invention relates to a satellite internet service transmission method.

Applying a tunneling technique to a satellite Internet subscriber using a satellite PSTN / ISDN to form a NAS Initiated tunnel from the NAS to the tunneling server of the subscriber network through a NAS used in the existing Internet to a tunnel termination device in the satellite Internet gateway;

Transmitting data using the formed tunneling; And,

Receiving data via the satellite.

In addition, the present invention, in the satellite Internet service transmission method,

For the network redundancy, a satellite internet subscriber using PSTN / ISDN in the existing Internet is assigned an IP through a NAS on the existing Internet;

Forming a Client Initiated tunnel to the tunnel termination device in the gateway used in the existing Internet by applying the tunneling scheme by the assigned IP;

Transmitting data using the formed tunnel; And,

Receiving data via the satellite.

Accordingly, the method for transmitting satellite internet service using tunneling of the present invention is difficult to expand and duplicate network due to the limitation of capacity for accommodating leased lines and PSTN / ISDN subscribers. Otherwise, network scalability and redundancy can be achieved.

<Example>

Hereinafter, an example of applying the scheme according to the present invention will be described with reference to the accompanying drawings.

1 illustrates a structure of a satellite Internet service and a service providing method using a tunneling technique to which the present invention is applied.

In FIG. 1, a network continuity is provided by attaching separate IP headers to data connecting a NAS Initiated tunnel and a Client Initiated tunnel (network accommodating an arbitrary device and a network accommodating an arbitrary device for a PSTN / ISDN subscriber). Generated by a request between a client and a server in the tunnel,

Tunneling to a satellite Internet LAN subscriber (in the process of creating a tunnel, or generally in the form of tunnel creation, a Nas Initiated tunnel becomes a NAS (Network Access Server) for the tunnel's client; Satellite Internet service transmission method using the tunneling (applied to the PC in the form) is illustrated.

Accordingly, the problem of network redundancy shown in the existing satellite Internet (FIGS. 2 and 3) is solved by FIG.

In the first method of using the PSTN / ISDN in FIG. 1, the subscriber 1 creates a tunnel from the NAS to the tunnel terminator 12 inside the satellite Internet gateway 6 through the subscriber authentication system 13 and the existing Internet. Receives a separate IP address from the one used internally, requests data from host 16 (19), and host responds to data 20 into satellite internet gateway 6, via satellite 7 via satellite internet subscriber. Data is transmitted to the satellite antenna of (1).

The second subscriber (2) of the method using the PSTN / ISDN in Figure 1 is the IP address used in the existing Internet from the NAS through the subscriber authentication system 13 receives the data through the PSTN / ISDN without using the existing satellite When using the satellite Internet during transmission and reception, the client-initiated tunnel 10 from the subscriber station 2 to the tunnel termination device 12 is connected to the tunnel termination device 12 inside the satellite internet gateway 6. And transmit the satellite 7 to the satellite antenna of the satellite Internet subscriber 2.

In FIG. 1, when there is no satellite network abnormality 23, the satellite internet subscriber using the LAN connects to the host 16 on the existing internet 17 and transmits 20 from the host using the IP assigned from the satellite internet. The data is configured to be transmitted to the satellite LAN Internet subscriber via the satellite 7. In addition, in the event of a satellite network abnormality 23, the LAN-to-LAN tunnel router 22 forms a tunnel 11 with the LAN server 3 of the satellite LAN subscriber, and through this tunnel, a host on the existing Internet. A duplex form of the network capable of transmitting data to the network (19) and receiving data from the tunnel (11) between the LAN-to-LAN tunnel router (22) and the LAN server (3) of the satellite LAN subscriber. Apply.

As described above, the present invention can improve the network scalability, network efficiency, and redundancy by applying a tunneling technique to a PSTN / ISDN subscriber and a satellite Internet subscriber using a LAN. In particular, it is possible to provide the duplication of the daily network for the PSTN / ISDN subscribers, and to provide the duplication of the network selectively for the satellite Internet subscribers using the LAN.

Claims (3)

In the satellite Internet service transmission method, Applying a tunneling technique to a satellite Internet subscriber using a satellite PSTN / ISDN to form a NAS Initiated tunnel from the NAS to the tunneling server of the subscriber network through a NAS used in the existing Internet to a tunnel termination device in the satellite Internet gateway; Transmitting data using the formed tunneling; And, And receiving data through the satellites. In the satellite Internet service transmission method, For the network redundancy, a satellite internet subscriber using PSTN / ISDN in the existing Internet is assigned an IP through a NAS on the existing Internet; Forming a Client Initiated tunnel to the tunnel termination device in the gateway used in the existing Internet by applying the tunneling scheme by the assigned IP; Transmitting data using the formed tunnel; And, And receiving data through the satellites. In the satellite Internet service transmission method, Receiving an IP from the satellite Internet by a satellite Internet subscriber receiving the LAN; Transmitting data through the existing Internet using the assigned IP; And receiving data through the satellite and simultaneously transmitting and receiving data through a tunnel formed on an existing internet.