WO2001088737A1 - Method and apparatus for providing satellite internet service to satellite internet terminal not joined in terrestrial internet line of satellite internet service provider - Google Patents

Method and apparatus for providing satellite internet service to satellite internet terminal not joined in terrestrial internet line of satellite internet service provider Download PDF

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Publication number
WO2001088737A1
WO2001088737A1 PCT/KR2000/001246 KR0001246W WO0188737A1 WO 2001088737 A1 WO2001088737 A1 WO 2001088737A1 KR 0001246 W KR0001246 W KR 0001246W WO 0188737 A1 WO0188737 A1 WO 0188737A1
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WO
WIPO (PCT)
Prior art keywords
satellite
internet
internet service
service provider
address
Prior art date
Application number
PCT/KR2000/001246
Other languages
French (fr)
Inventor
Hyun-Sung Cho
Original Assignee
Pentamedia Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pentamedia Co., Ltd. filed Critical Pentamedia Co., Ltd.
Publication of WO2001088737A1 publication Critical patent/WO2001088737A1/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/165—Combined use of TCP and UDP protocols; selection criteria therefor

Definitions

  • the present invention relates to a method and an apparatus for providing a satellite Internet service; and more particularly, to a method and an apparatus for providing a satellite Internet service to an Internet terminal which is not joined in a terrestrial Internet line of a satellite Internet service provider.
  • the Internet service provider when connecting to an Internet service provider, allocates an Internet address to an Internet terminal.
  • the Internet address allocated to the Internet terminal is used as a source address of a data request message and a destination address of a response data message. Since the data request message and the response data message are packet data and the destination address of the response data message is the source address of the data request message, the Internet terminal is dependent on the Internet service provider.
  • FIG. 1 is an overall diagram of a conventional network for providing a satellite Internet service.
  • the satellite Internet terminal 10 or 20 When a satellite Internet terminal 10 or 20 wants to receive information data through a satellite 70, the satellite Internet terminal 10 or 20 transmits a data request message that is a packet based message, to a terrestrial network of a satellite Internet service provider 30 through dedicated circuits 12 and 32 or modems 22 and 34.
  • the data request message is transmitted to the satellite Internet service provider 30 through a router 36 of the satellite Internet service provider 30.
  • the satellite Internet service provider 30 transmits the data request message to a site having requested information data (not shown in this drawing) through a router 38 and the Internet 50.
  • the site transmits the requested information data to the router 38.
  • the router 38 determines whether the destination address of the requested information data is the same as its address. If so, the router 38 transmits the requested information data to the satellite Internet service provider 30.
  • the satellite Internet terminal requesting the requested information data When receiving the requested information data, it is determined whether the satellite Internet terminal requesting the requested information data is an authorized subscriber. If the satellite Internet terminal is the authorized subscriber, the requested information data is transmitted to a satellite gateway 42 through a router 40.
  • the satellite gateway 42 attaches an address of a destination Internet terminal which is a terminal requesting the requested information data, to the requested information data, thereby generating transmission packet data.
  • the satellite gateway transmits the transmission packet data to a satellite transmitter 44.
  • the satellite transmitter 44 converts the transmission packet data into analog transmission signals and sends the analog transmission signals to a satellite receiving antenna 80 or 90 of the satellite Internet terminal 10 or 20 through the satellite 70.
  • the satellite Internet terminal On receiving the analog transmission signals, the satellite Internet terminal recovers the requested information data from the received analog transmission signals .
  • the satellite terminal For being rendered the satellite Internet service as mentioned above, the satellite terminal should be joined in the satellite Internet service provider 30.
  • the reason is that the satellite terminal is dependent on the terrestrial network of the satellite Internet service provider 30.
  • an Internet terminal 3 or 4 which is a subscriber joined not the terrestrial Internet line of the satellite Internet service provider but in a terrestrial Internet provider, cannot be rendered the satellite Internet service.
  • the Internet terminal For the satellite Internet service, the Internet terminal, which is joined in the terrestrial Internet service provider 1 or 2, should additionally joined in the satellite Internet service provider 30.
  • the terrestrial Internet service provider 1 or 2 cannot independently provide the satellite Internet service.
  • Fig. 2 is a block diagram illustrating a network driver of a conventional satellite Internet terminal.
  • an Internet application processor 100 in the satellite Internet terminal requests a connection to the satellite Internet service provider and operates a point-to-point protocol (PPP) connector 102.
  • the satellite Internet terminal is connected to the terrestrial network of the satellite service provider through a PPP connector drive 104 and a network driver interface specification (NDIS) 106.
  • NDIS network driver interface specification
  • the satellite Internet terminal gets an Internet protocol (IP) address dependent on the satellite Internet service provider 30.
  • IP Internet protocol
  • the Internet application processor 100 When completing the connection with the satellite Internet service provider 30, the Internet application processor 100 requests the Internet data of a certain Internet site. In other words, a data request message of which a source address corresponds to the Internet protocol
  • IP Internet Protocol address received from the satellite Internet service provider 30, is generated and transmitted to the satellite
  • the data request message in case of a modem connection, is transmitted to the terrestrial network of the satellite Internet service provider 30 through the NDIS2 112, the NDISl 106 and the modem (not shown in this drawing) .
  • the data request message in case of a dedicated circuits connection, is transmitted to the terrestrial network of the satellite Internet service provider through the NDISl 114.
  • the response data message i.e., information data is received through the satellite 70 and the receiving antenna 80 and transmitted to the NDISl 114 and the transmission control protocol/Internet protocol (TCP/IP) protocol stack 110.
  • TCP/IP transmission control protocol/Internet protocol
  • the satellite Internet terminal restores received information data.
  • the information data is used at the Internet application processor 100 of the satellite Internet terminal 10 or 20.
  • the information data requested by the Internet terminal through the terrestrial Internet service provider is transmitted not to the satellite Internet service provider but to the terrestrial Internet service provider. Accordingly, the Internet terminal, which is joined not in the terrestrial Internet line of the satellite Internet service provider but in the terrestrial Internet service provider, cannot be rendered the satellite Internet service.
  • the Internet terminal should be additionally joined in the terrestrial Internet line of the satellite Internet service provider.
  • Disclosure of Invention Therefore, it is an object of the present invention to provide a method and an apparatus for providing a satellite Internet service to an Internet terminal which is not joined in a terrestrial Internet line of a satellite Internet service provider but joined in a terrestrial Internet service provider.
  • a method for providing a satellite Internet service to a satellite Internet terminal which is not joined in a terrestrial Internet line of a satellite Internet service provider comprising the steps of: a) requesting a connection with a satellite Internet; b) receiving an Internet address from a terrestrial Internet service provider; c) receiving a tunneling address from a satellite Internet service provider through the terrestrial Internet service provider; and d) generating a data request message of which a source address is the tunneling address and transmitting the data request message.
  • a method for providing a satellite Internet service to a satellite Internet terminal which is not joined in a satellite Internet service provider comprising the steps of: a) at the satellite Internet terminal, requesting a connection with a satellite Internet; b) allocating an Internet address to the satellite Internet terminal; c) allocating a tunneling address to the satellite Internet terminal; d) generating a data request message of which a source address is the tunneling address and transmitting the data request message to a terrestrial Internet service provider; and e) generating a response message having information data and a destination address which is the tunneling address as and transmitting the response message to the satellite Internet terminal through a satellite.
  • a computer readable media storing instructions for executing a method for providing a satellite Internet service to a satellite Internet terminal which is not joined in a satellite Internet service provider, the method comprising the steps of: a) requesting a connection with a satellite Internet; b) receiving an Internet address from a terrestrial Internet service provider; c) receiving a tunneling address from a satellite Internet service provider through the terrestrial Internet service provider; and d) generating a data request message of which a source address is the tunneling address and transmitting the data request message.
  • Fig. 1 is an overall diagram of a conventional network for providing a satellite Internet service
  • Fig. 2 is a block diagram illustrating a network driver of a conventional satellite Internet terminal
  • Fig. 3 is an overall diagram of a network for providing a satellite Internet service in accordance with the present invention
  • Fig. 4A is a diagram illustrating a log-in window for being rendered a satellite Internet service provider in accordance with the present invention
  • Fig. 4B is a diagram illustrating a window representing that a log-in is successfully performed
  • Fig. 5 is a block diagram illustrating a network drive of a satellite Internet terminal in accordance with the present invention.
  • Figs. 6A and 6B are diagrams illustrating data formats of data request messages in accordance with the present invention.
  • Figs. 7A to 7C are flow charts for illustrating a method for providing a satellite Internet service in accordance with the present invention.
  • FIG. 3 is an overall diagram of a network for providing a satellite Internet service in accordance with the present invention.
  • a satellite Internet terminal 200 or 202 is connected to a terrestrial Internet service provider 210 through dedicated circuits 212 and 214 or through modems 216 and 218, and receives an Internet address from the terrestrial Internet service provider 210. Then the terrestrial Internet service provider 210 connects to a resource subscriber management system 232 of a satellite
  • Internet service provider 230 obtains an Internet protocol address for the satellite Internet service
  • a tunneling address' (hereinafter, which is referred to as a ⁇ tunneling address' ) , and then provides the tunneling address to the satellite Internet terminal 200 or 202 through the terrestrial Internet line of the satellite Internet service provider 230.
  • a log-in window for receiving authentication setup information from a subscriber is described in Fig. 4A.
  • a window representing the log-in is successfully performed is described in Fig. 4B.
  • Fig. 4A is a diagram illustrating a log-in window for being rendered a satellite Internet service provider in accordance with the present invention.
  • the subscriber selects one of authentication setup menus, which represents a service wanted to be rendered to the subscriber.
  • one of ⁇ KT authentication' , AICPS authentication' or ⁇ MegaSAT authentication' is selected.
  • a log-in server IP address represents an IP address of a subscriber management system.
  • a hardware address represents a default address of the satellite Internet terminal .
  • Fig. 4B is a diagram illustrating a window representing that a log-in is successfully performed. If a window describing "Login OK" and informing the satellite IP address appears in a displaying device, the satellite IP address is successfully received from the subscriber management system.
  • the satellite IP address i.e., a tunneling address, is used as a source address of a data request message. If the satellite Internet terminal 200 or 202 requests Internet data, the satellite Internet terminal 200 or 202 generates a data request message by using a tunneling address as a source address. In other words, the tunneling address is used as the source address of the data request message instead of the Internet address of a terrestrial Internet service provider.
  • the data request message is transmitted to the terrestrial Internet service provider 210 through dedicated circuits 212 and 214 or through modems 216 and 218.
  • the data request message is transmitted to Internet 222 through a router 220. If the data request message is received at a certain site through the Internet 222, the certain site generates a response message having a destination address which is equal to the source address of the data request message.
  • the response data message is transmitted to a router 234 of the satellite Internet service provider 230.
  • the response message received at the satellite Internet service provider 230 is transmitted to a satellite gateway 240.
  • the satellite gateway 240 generates satellite Internet data by adding an inherent address to the response message and transmits the satellite Internet data to a satellite transmitter 242.
  • the satellite Internet data is converted into analog satellite Internet data and sent to a satellite 248 through a satellite transmitting antenna 246.
  • the satellite 248 broadcasts analog satellite Internet data to the satellite Internet terminal 200 or 202.
  • the analog satellite Internet data is received by the receiving antenna 250 or 260 of the satellite Internet terminal 200 or 202, and restored.
  • the response data message is directly transmitted to the terrestrial network of the satellite Internet service provider 230 not through the terrestrial Internet service provider 210.
  • the response data message is received in the satellite Internet terminal 200 or 202 through the satellite of the satellite Internet service provider 230, thereby providing the satellite Internet service to the satellite Internet terminal not through the terrestrial network of the satellite Internet service provider but through the network of the terrestrial Internet service provider 210.
  • the satellite Internet service can be rendered to the satellite Internet terminal.
  • Fig. 5 is a block diagram illustrating a network drive of a satellite Internet terminal in accordance with the present invention.
  • a data request message is generated in an Internet application processor 300.
  • the data request message is converted into a packet data request message of which a source address is an Internet address of the terrestrial Internet service provider in a TCP/IP protocol stack 312, and the packet data request message is transmitted to the tunneling drive 310.
  • the tunneling drive 310 replaces the Internet address of the terrestrial Internet service provider with the tunneling address of the satellite Internet service provider which is stored in a memory.
  • Data formats of an input and an output data request messages are illustrated in Figs. 6A and 6B. Referring to Fig. 6A, a data format of a data request message inputted to the tunneling drive is illustrated. Referring to Fig. 6B, a data format of a data request message outputted from the tunneling drive is illustrated.
  • the tunneling drive 310 transmits the packet data request message having the tunneling address as the source address, to the terrestrial Internet service provider through NDIS2 314 and NDISl 306.
  • the response data message is received through the satellite receiving antenna 250 and the NDISl 316 and restored in the TCP/IP protocol stack 312 of the satellite Internet terminal.
  • the restored response message is transmitted to the Internet application processor 300.
  • the satellite Internet terminal in accordance with the present invention can be rendered the satellite Internet service through the terrestrial network of the terrestrial Internet service provider and the satellite network of the satellite Internet service provider.
  • Figs. 7A to 7C are flow charts for illustrating a method for providing a satellite Internet service in accordance with the present invention.
  • the satellite Internet terminal 200 or 202 requests a connection with satellite Internet at step 400, the satellite Internet terminal 200 or 202 is connected to the terrestrial Internet service provider 210 and provided an Internet address from the terrestrial Internet service provider 210 at step 410.
  • the satellite Internet terminal 200 or 202 is connected to the resource subscriber management system 232 of the satellite Internet service provider and provided a tunneling address at steps 420 and 430.
  • the satellite Internet terminal connects to the subscriber management system of the satellite Internet service provider and obtains the tunneling address.
  • step 440 it is determined whether the connection with the satellite Internet is complete. If the connection with the satellite Internet is not complete, the process goes back to step 400 to request the connection with the satellite Internet. If the connection with the satellite Internet is complete, Information data is requested by the Internet application processor of the satellite Internet terminal at step 450. A data request message of which a source address which is the tunneling address, is generated at step 460 and the data request message is transmitted to terrestrial Internet service provider at step 470.
  • the satellite Internet terminal is connected to the Internet through the terrestrial network of the terrestrial Internet service provider at step 480, the data request message is received at a response site at step 490.
  • the response site generates a response data message of which a destination address is the source address of the data request message, and transmits the response data message to the destination address at steps 500 and 510.
  • the response data message is received at the satellite Internet service provider 230 at step 520.
  • the response data message is transmitted to the satellite gateway 240 at step 530.
  • the response data message is sent by the satellite transmitter 242 to the satellite 248 through the transmitting antenna 246 at step 540.
  • the response data message is received by satellite receiving antenna and analyzed in the satellite Internet terminal at steps 550 and 560.
  • the process goes to the step 450 to request the Internet data.
  • the satellite Internet terminal can be rendered the satellite Internet service through the terrestrial network of the terrestrial Internet service provider and the satellite network of the satellite Internet service provider.
  • the limitation in the protocols can be reduced and routing paths can be minimized by not passing through the terrestrial network of the satellite Internet service provider, thereby being capable of rendering a high rate Internet service having about 60 - 155 Mbps data rate, which cannot be rendered in the conventional satellite Internet service.
  • the present invention can be utilized in the Internet service and the satellite Internet service.

Abstract

A method for providing a satellite Internet service to a satellite Internet terminal which is not joined in a terrestrial Internet line of a satellite Internet service provider. The method includes the steps of: a) requesting a connection with a satellite Internet; b) receiving an Internet address from a terrestrial Internet service provider; c) receiving a tunneling address from a satellite Internet service provider through the terrestrial Internet service provider; and d) generating a data request message of which a source address is the tunneling address and transmitting the data request message.

Description

METHOD AND APPARATUS FOR PROVIDING SATELLITE INTERNET
SERVICE TO SATELLITE INTERNET TERMINAL NOT JOINED IN
TERRESTRIAL INTERNET LINE OF SATELLITE INTERNET
SERVICE PROVIDER
Description
Technical Field
The present invention relates to a method and an apparatus for providing a satellite Internet service; and more particularly, to a method and an apparatus for providing a satellite Internet service to an Internet terminal which is not joined in a terrestrial Internet line of a satellite Internet service provider.
Background Art
In general, when connecting to an Internet service provider, the Internet service provider allocates an Internet address to an Internet terminal. The Internet address allocated to the Internet terminal is used as a source address of a data request message and a destination address of a response data message. Since the data request message and the response data message are packet data and the destination address of the response data message is the source address of the data request message, the Internet terminal is dependent on the Internet service provider.
A conventional method for providing the satellite Internet service will be described with reference to Figs. 1 and 2. Fig. 1 is an overall diagram of a conventional network for providing a satellite Internet service.
When a satellite Internet terminal 10 or 20 wants to receive information data through a satellite 70, the satellite Internet terminal 10 or 20 transmits a data request message that is a packet based message, to a terrestrial network of a satellite Internet service provider 30 through dedicated circuits 12 and 32 or modems 22 and 34. The data request message is transmitted to the satellite Internet service provider 30 through a router 36 of the satellite Internet service provider 30. The satellite Internet service provider 30 transmits the data request message to a site having requested information data (not shown in this drawing) through a router 38 and the Internet 50. The site transmits the requested information data to the router 38. The router 38 determines whether the destination address of the requested information data is the same as its address. If so, the router 38 transmits the requested information data to the satellite Internet service provider 30. When receiving the requested information data, it is determined whether the satellite Internet terminal requesting the requested information data is an authorized subscriber. If the satellite Internet terminal is the authorized subscriber, the requested information data is transmitted to a satellite gateway 42 through a router 40. The satellite gateway 42 attaches an address of a destination Internet terminal which is a terminal requesting the requested information data, to the requested information data, thereby generating transmission packet data. The satellite gateway transmits the transmission packet data to a satellite transmitter 44. The satellite transmitter 44 converts the transmission packet data into analog transmission signals and sends the analog transmission signals to a satellite receiving antenna 80 or 90 of the satellite Internet terminal 10 or 20 through the satellite 70. On receiving the analog transmission signals, the satellite Internet terminal recovers the requested information data from the received analog transmission signals .
For being rendered the satellite Internet service as mentioned above, the satellite terminal should be joined in the satellite Internet service provider 30. The reason is that the satellite terminal is dependent on the terrestrial network of the satellite Internet service provider 30. In other words, an Internet terminal 3 or 4, which is a subscriber joined not the terrestrial Internet line of the satellite Internet service provider but in a terrestrial Internet provider, cannot be rendered the satellite Internet service. For the satellite Internet service, the Internet terminal, which is joined in the terrestrial Internet service provider 1 or 2, should additionally joined in the satellite Internet service provider 30. The terrestrial Internet service provider 1 or 2 cannot independently provide the satellite Internet service.
Fig. 2 is a block diagram illustrating a network driver of a conventional satellite Internet terminal.
Referring to Fig. 2, in order to be coupled to a terrestrial network of the satellite service provider, an Internet application processor 100 in the satellite Internet terminal requests a connection to the satellite Internet service provider and operates a point-to-point protocol (PPP) connector 102. The satellite Internet terminal is connected to the terrestrial network of the satellite service provider through a PPP connector drive 104 and a network driver interface specification (NDIS) 106. When being connected to the terrestrial network of the satellite service provider 30, the satellite Internet terminal gets an Internet protocol (IP) address dependent on the satellite Internet service provider 30.
When completing the connection with the satellite Internet service provider 30, the Internet application processor 100 requests the Internet data of a certain Internet site. In other words, a data request message of which a source address corresponds to the Internet protocol
(IP) address received from the satellite Internet service provider 30, is generated and transmitted to the satellite
Internet service provider 30. The data request message, in case of a modem connection, is transmitted to the terrestrial network of the satellite Internet service provider 30 through the NDIS2 112, the NDISl 106 and the modem (not shown in this drawing) . The data request message, in case of a dedicated circuits connection, is transmitted to the terrestrial network of the satellite Internet service provider through the NDISl 114. The response data message, i.e., information data is received through the satellite 70 and the receiving antenna 80 and transmitted to the NDISl 114 and the transmission control protocol/Internet protocol (TCP/IP) protocol stack 110. The satellite Internet terminal restores received information data. The information data is used at the Internet application processor 100 of the satellite Internet terminal 10 or 20.
In general Internet environments, since a destination address of the information data is the same as the source address of the data request message, the information data requested by the Internet terminal through the terrestrial Internet service provider is transmitted not to the satellite Internet service provider but to the terrestrial Internet service provider. Accordingly, the Internet terminal, which is joined not in the terrestrial Internet line of the satellite Internet service provider but in the terrestrial Internet service provider, cannot be rendered the satellite Internet service.
Therefore, in order to render the Internet terminal the satellite Internet service, the Internet terminal should be additionally joined in the terrestrial Internet line of the satellite Internet service provider.
Disclosure of Invention Therefore, it is an object of the present invention to provide a method and an apparatus for providing a satellite Internet service to an Internet terminal which is not joined in a terrestrial Internet line of a satellite Internet service provider but joined in a terrestrial Internet service provider.
In accordance with an aspect of the present invention, there is provided a method for providing a satellite Internet service to a satellite Internet terminal which is not joined in a terrestrial Internet line of a satellite Internet service provider, the method comprising the steps of: a) requesting a connection with a satellite Internet; b) receiving an Internet address from a terrestrial Internet service provider; c) receiving a tunneling address from a satellite Internet service provider through the terrestrial Internet service provider; and d) generating a data request message of which a source address is the tunneling address and transmitting the data request message.
In accordance with another aspect of the present invention, there is provided a method for providing a satellite Internet service to a satellite Internet terminal which is not joined in a satellite Internet service provider, the method comprising the steps of: a) at the satellite Internet terminal, requesting a connection with a satellite Internet; b) allocating an Internet address to the satellite Internet terminal; c) allocating a tunneling address to the satellite Internet terminal; d) generating a data request message of which a source address is the tunneling address and transmitting the data request message to a terrestrial Internet service provider; and e) generating a response message having information data and a destination address which is the tunneling address as and transmitting the response message to the satellite Internet terminal through a satellite.
In accordance with further another aspect of the present invention, there is provided a computer readable media storing instructions for executing a method for providing a satellite Internet service to a satellite Internet terminal which is not joined in a satellite Internet service provider, the method comprising the steps of: a) requesting a connection with a satellite Internet; b) receiving an Internet address from a terrestrial Internet service provider; c) receiving a tunneling address from a satellite Internet service provider through the terrestrial Internet service provider; and d) generating a data request message of which a source address is the tunneling address and transmitting the data request message.
Brief Description of Drawings
The above and other objects and features of the instant invention will become apparent from the following description of preferred embodiments taken in conjunction with the accompanying drawings, in which:
Fig. 1 is an overall diagram of a conventional network for providing a satellite Internet service;
Fig. 2 is a block diagram illustrating a network driver of a conventional satellite Internet terminal; Fig. 3 is an overall diagram of a network for providing a satellite Internet service in accordance with the present invention;
Fig. 4A is a diagram illustrating a log-in window for being rendered a satellite Internet service provider in accordance with the present invention;
Fig. 4B is a diagram illustrating a window representing that a log-in is successfully performed;
Fig. 5 is a block diagram illustrating a network drive of a satellite Internet terminal in accordance with the present invention;
Figs. 6A and 6B are diagrams illustrating data formats of data request messages in accordance with the present invention;
Figs. 7A to 7C are flow charts for illustrating a method for providing a satellite Internet service in accordance with the present invention.
Best Mode for Carrying out the Invention Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings . Fig. 3 is an overall diagram of a network for providing a satellite Internet service in accordance with the present invention.
Referring to Fig. 3, a satellite Internet terminal 200 or 202 is connected to a terrestrial Internet service provider 210 through dedicated circuits 212 and 214 or through modems 216 and 218, and receives an Internet address from the terrestrial Internet service provider 210. Then the terrestrial Internet service provider 210 connects to a resource subscriber management system 232 of a satellite
Internet service provider 230 and obtains an Internet protocol address for the satellite Internet service
(hereinafter, which is referred to as a Λtunneling address' ) , and then provides the tunneling address to the satellite Internet terminal 200 or 202 through the terrestrial Internet line of the satellite Internet service provider 230. A log-in window for receiving authentication setup information from a subscriber is described in Fig. 4A. A window representing the log-in is successfully performed is described in Fig. 4B.
Fig. 4A is a diagram illustrating a log-in window for being rendered a satellite Internet service provider in accordance with the present invention.
The subscriber selects one of authentication setup menus, which represents a service wanted to be rendered to the subscriber. In this specification, one of ΛKT authentication' , AICPS authentication' or ΛMegaSAT authentication' is selected.
A log-in server IP address represents an IP address of a subscriber management system. A hardware address represents a default address of the satellite Internet terminal .
Fig. 4B is a diagram illustrating a window representing that a log-in is successfully performed. If a window describing "Login OK" and informing the satellite IP address appears in a displaying device, the satellite IP address is successfully received from the subscriber management system. The satellite IP address, i.e., a tunneling address, is used as a source address of a data request message. If the satellite Internet terminal 200 or 202 requests Internet data, the satellite Internet terminal 200 or 202 generates a data request message by using a tunneling address as a source address. In other words, the tunneling address is used as the source address of the data request message instead of the Internet address of a terrestrial Internet service provider. The data request message is transmitted to the terrestrial Internet service provider 210 through dedicated circuits 212 and 214 or through modems 216 and 218. The data request message is transmitted to Internet 222 through a router 220. If the data request message is received at a certain site through the Internet 222, the certain site generates a response message having a destination address which is equal to the source address of the data request message. In the present invention, since the source address of the data request message is the tunneling address, the response data message is transmitted to a router 234 of the satellite Internet service provider 230. The response message received at the satellite Internet service provider 230 is transmitted to a satellite gateway 240. The satellite gateway 240 generates satellite Internet data by adding an inherent address to the response message and transmits the satellite Internet data to a satellite transmitter 242. The satellite Internet data is converted into analog satellite Internet data and sent to a satellite 248 through a satellite transmitting antenna 246. The satellite 248 broadcasts analog satellite Internet data to the satellite Internet terminal 200 or 202. The analog satellite Internet data is received by the receiving antenna 250 or 260 of the satellite Internet terminal 200 or 202, and restored.
In the present invention, as the tunneling address received from the satellite Internet service provider instead of the Internet address received from the terrestrial Internet service provider is used as the source address of the date request message, the response data message is directly transmitted to the terrestrial network of the satellite Internet service provider 230 not through the terrestrial Internet service provider 210. The response data message is received in the satellite Internet terminal 200 or 202 through the satellite of the satellite Internet service provider 230, thereby providing the satellite Internet service to the satellite Internet terminal not through the terrestrial network of the satellite Internet service provider but through the network of the terrestrial Internet service provider 210. In other words, even though the satellite Internet terminal is not joined in the terrestrial Internet service of the satellite Internet service provider but in only the terrestrial Internet service provider 210, the satellite Internet service can be rendered to the satellite Internet terminal. Fig. 5 is a block diagram illustrating a network drive of a satellite Internet terminal in accordance with the present invention.
Referring to Fig. 5, in order to render the satellite Internet terminal the satellite Internet service, a data request message is generated in an Internet application processor 300. The data request message is converted into a packet data request message of which a source address is an Internet address of the terrestrial Internet service provider in a TCP/IP protocol stack 312, and the packet data request message is transmitted to the tunneling drive 310. The tunneling drive 310 replaces the Internet address of the terrestrial Internet service provider with the tunneling address of the satellite Internet service provider which is stored in a memory. Data formats of an input and an output data request messages are illustrated in Figs. 6A and 6B. Referring to Fig. 6A, a data format of a data request message inputted to the tunneling drive is illustrated. Referring to Fig. 6B, a data format of a data request message outputted from the tunneling drive is illustrated.
The tunneling drive 310 transmits the packet data request message having the tunneling address as the source address, to the terrestrial Internet service provider through NDIS2 314 and NDISl 306.
The response data message is received through the satellite receiving antenna 250 and the NDISl 316 and restored in the TCP/IP protocol stack 312 of the satellite Internet terminal. The restored response message is transmitted to the Internet application processor 300.
Even though the satellite Internet terminal is not joined in the terrestrial internet line of the satellite Internet service provider, by using the tunneling drive, the satellite Internet terminal in accordance with the present invention can be rendered the satellite Internet service through the terrestrial network of the terrestrial Internet service provider and the satellite network of the satellite Internet service provider.
Figs. 7A to 7C are flow charts for illustrating a method for providing a satellite Internet service in accordance with the present invention.
If the satellite Internet terminal 200 or 202 requests a connection with satellite Internet at step 400, the satellite Internet terminal 200 or 202 is connected to the terrestrial Internet service provider 210 and provided an Internet address from the terrestrial Internet service provider 210 at step 410. The satellite Internet terminal 200 or 202 is connected to the resource subscriber management system 232 of the satellite Internet service provider and provided a tunneling address at steps 420 and 430. The satellite Internet terminal connects to the subscriber management system of the satellite Internet service provider and obtains the tunneling address.
Then, at step 440, it is determined whether the connection with the satellite Internet is complete. If the connection with the satellite Internet is not complete, the process goes back to step 400 to request the connection with the satellite Internet. If the connection with the satellite Internet is complete, Information data is requested by the Internet application processor of the satellite Internet terminal at step 450. A data request message of which a source address which is the tunneling address, is generated at step 460 and the data request message is transmitted to terrestrial Internet service provider at step 470.
The satellite Internet terminal is connected to the Internet through the terrestrial network of the terrestrial Internet service provider at step 480, the data request message is received at a response site at step 490. The response site generates a response data message of which a destination address is the source address of the data request message, and transmits the response data message to the destination address at steps 500 and 510. The response data message is received at the satellite Internet service provider 230 at step 520. The response data message is transmitted to the satellite gateway 240 at step 530. The response data message is sent by the satellite transmitter 242 to the satellite 248 through the transmitting antenna 246 at step 540. The response data message is received by satellite receiving antenna and analyzed in the satellite Internet terminal at steps 550 and 560.
If another information data wants to be requested after the step 560, since the satellite Internet terminal has been connected with the satellite Internet, the process goes to the step 450 to request the Internet data.
Even though the satellite Internet terminal is not joined in the terrestrial Internet line of the satellite Internet service provider, the satellite Internet terminal can be rendered the satellite Internet service through the terrestrial network of the terrestrial Internet service provider and the satellite network of the satellite Internet service provider.
The limitation in the protocols can be reduced and routing paths can be minimized by not passing through the terrestrial network of the satellite Internet service provider, thereby being capable of rendering a high rate Internet service having about 60 - 155 Mbps data rate, which cannot be rendered in the conventional satellite Internet service.
Although the preferred embodiments of the invention have been disclosed for illustrative purpose, those skilled in the art will be appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims .
Industrial Applicability
The present invention can be utilized in the Internet service and the satellite Internet service.

Claims

Claims
1. A method for providing a satellite Internet service to a satellite Internet terminal which is not joined in a terrestrial Internet line of a satellite Internet service provider, the method comprising the steps of: a) at the satellite Internet terminal, requesting a connection with a satellite Internet; b) allocating an Internet address to the satellite Internet terminal; c) allocating a tunneling address to the satellite Internet terminal; d) generating a data request message of which a source address is the tunneling address and transmitting the data request message to a terrestrial Internet service provider; and e) generating a response message having information data and a destination address which is the tunneling address as and transmitting the response message to the satellite Internet terminal through a satellite.
2. The method as recited in claim 1, further comprising the step of: f) at the satellite Internet terminal, receiving the response message by a satellite receiving antenna and recovering the response message.
3. A method for providing a satellite Internet service • to a satellite Internet terminal which is not joined in a terrestrial Internet service line of a satellite Internet service provider, the method comprising the steps of: a) requesting a connection with a satellite Internet; b) receiving an Internet address from a terrestrial Internet service provider; c) receiving a tunneling address from a satellite Internet service provider through the terrestrial Internet service provider; and d) generating a data request message of which a source address is the tunneling address and transmitting the data request message.
4. The method as recited in claim 3, wherein the step d) includes the steps of: dl) generating the data request message of which the source address is the Internet address; d2) replacing the source address of the data request message with the tunneling address; and d3) transmitting the data request message to the terrestrial Internet service provider.
5. An apparatus for providing a satellite Internet service to a satellite Internet terminal which is not joined in a terrestrial Internet line of a satellite Internet service provider, the apparatus comprising: means for requesting a connection with a satellite Internet; means for receiving an Internet address from a terrestrial Internet service providers- means for receiving a tunneling address from a satellite Internet service provider; and means for generating a data request message of which a source address is the tunneling address and transmitting the data request message.
6. The apparatus as recited in claim 5, wherein the means for generating a data request message includes: means for generating the data request message of which the source address is the Internet address; means for replacing the source address of the data request message with the tunneling address; and means for transmitting the data request message to the terrestrial Internet service provider.
7. A computer readable media storing instructions for executing a method for providing a satellite Internet service to a satellite Internet terminal which is not joined in a terrestrial Internet service line of a satellite Internet service provider, the method comprising the steps of: a) requesting a connection with a satellite Internet; b) receiving an Internet address from a terrestrial Internet service provider; c) receiving a tunneling address from a satellite Internet service provider through the terrestrial Internet service provider; and d) generating a data request message of which a source address is the tunneling address and transmitting the data request message.
8. The computer readable media as recited in claim 7, wherein the step d) includes the steps of: dl) generating the data request message of which the source address is the Internet address; d2) replacing the source address of the data request message with the tunneling address; and d3) transmitting the data request message to the terrestrial Internet service provider.
PCT/KR2000/001246 2000-05-15 2000-11-02 Method and apparatus for providing satellite internet service to satellite internet terminal not joined in terrestrial internet line of satellite internet service provider WO2001088737A1 (en)

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KR10-2000-0025703A KR100368045B1 (en) 2000-05-15 2000-05-15 Satellite internet sevice method for providing satellite internet service with independent terrestrial network of satellite internet service provider and Network driving method of satellite internet computer
KR2000-25703 2000-05-15

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KR100368045B1 (en) 2003-01-15

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