KR100243421B1 - Method of connecting internet of isdn subscriber - Google Patents

Abstract

The present invention relates to an access method that enables subscribers whose access network is an ISDN to access the Internet at a higher speed than a conventional telephone network in a large-capacity communication processing system. The present invention relates to an MLPPP (Multi-Link Point to Disclosed is a method for enabling fast service by efficiently connecting an ISDN network, which is a subscriber network, and an Internet network, which is an access network, using a Point Protocol) protocol. According to the present invention, an ISDN subscriber receives an HSSF confirmation and transmits and receives an MLPPP packet that performs a multi-link call connection with the INAS in the order of 1B channel and 2B channel, and after the ISDN subscriber accesses a 2B channel, calls are made from a slave channel. In case of releasing, releasing the connected 2B channel call and 1B channel call in order, and when the ISDN subscriber terminates abnormally after connecting to 2B channel, the connected 2B channel abnormal call release and 1B channel call release. By performing the sequential release step, it is possible to provide an open Internet access service and a chargeback agency function service using the MLPPP protocol, and to make the Internet available to ISDN subscribers at a high speed.

Description

Internet Access Method for Subscribers of Integrated Telecommunication Network in High-capacity Communication Processing System

The present invention relates to an ISDN subscriber's Internet access method that enables ISDN subscribers to access the Internet more quickly in a mass communication processing system.

The present invention is based on a communication protocol conversion technology for communication with service users connected to ISDN networks and information providers connected to the Internet.

The present invention provides an MLPPP (Multi-Link Point to Point Protocol) protocol that is required when an Internet matching system (WNAS) in a large-capacity communication processing system uses an S-card to connect an ISDN subscriber to a KORNET without a user ID. The present invention relates to an internet matching system that provides a service for efficiently using the Internet after accessing a service, and also performs a chargeback collection function for a paid CP. In addition, if the ISDN subscribers want to receive the Internet service using the S-card, the Internet matching system connects to KORNET through a mass communication processing system without a user ID using the MLPPP protocol, and to the paid CP (Content Provider). It is in charge of MLPPP server function to perform chargeback agency function.

In addition, the above-described Internet matching system has the following functions in order to provide an open Internet access service and a chargeback agency function service using the MLPPP protocol. ISDN subscribers are provided with Internet service using MLPPP (RFC 1990) when using PRI (Basic Rate Interface) or BRI (Basic Rate Interface). Since 1B is 64Kbps, the speed is 128Kbps. The subscriber can then use the Internet service without boredom. At this time, the INAS (ISDN Network Access System) provides the link layer of the PPP (RFC 1661) and the multilink layer of the MLPPP to provide the MLPPP function, and the Internet matching device provides the function of the network layer of the PPP.

In the past, the subscribers of the telephone network felt the boredom by slowing down the speed of using the Internet access service by running the PPP protocol through a modem. And since there has been no billing collection function, I have paid a fee to the Information Service Provider, but from now on, the telephone bill is provided with a function that allows the information fee to be processed as a single bill depending on the time or data volume. do. In addition, the paid information provider manages each user's authentication value separately, and each provider has to handle billing, issue a bill, and collect a fee according to each user's usage. This means that much effort is required for certificate management and fee management in addition to providing information, which is the original job of a paid information provider. Existing processing is carried out through the ISDN network 200, ISDN matching device (INAS; 300), HSSF (High Speed Switching Fabric; 350) for the ISDN subscriber 100 as shown in FIG. 700). In this case, the ISDN matching device 300 only serves to convert the ISDN protocol into the Internet protocol. In the case of the Internet (Kornet) 600, the pay information provider 700 is connected via the Internet 600. 1 is composed of a WARP 500 that is a telephone network matching device, an internet matching system, and a web infoshop service processing device. The telephone network matching device (TNAS) 800 has a function of transmitting and receiving modem data when PC users access the telephone network using a modem. The internet matching device (WNAS) 400 converts user data through an S-card or a modem to be suitable for the Internet network, and connects the Internet network. The device has a Multi-Link Point to Point Protocol (MLPPP) / PPP protocol for serial line connection, a TCP / IP protocol for accessing the Internet, and an account management function. Internet service is provided through. The web infoshop service processing unit (WARP) 500 is responsible for handling all traffic when a user executes a program using the HTTP protocol. In order for the user's Internet usage traffic to pass through the web infoshop service processing apparatus 500, the user must set a corresponding value of the proxy server on the web browser as the address of the web infoshop service processing apparatus 500. Paid information provider 700 is a provider that is connected to the Internet network to provide information to Internet users and receive a corresponding fee.

As such, the present invention is applied to the MLPPP protocol, which allows the ISDN subscriber to access the Internet, and enables the user to use the Internet without any inconvenience. Since the number of Internet users is increasing year by year, the present invention will have a large impact on the information industry in the future.

Accordingly, the present invention has been made to provide Internet access to ISDN subscribers at a high speed, and provides a method independent of the network structure and software structure of users and information providers currently provided in the Internet network. In addition, regardless of the internal structure and environment, the subscriber is provided with a given PRI number and S-card, anytime, anywhere easy to access and use the service.

1 is a structural diagram of an internet information providing service network to which the present invention is applied;

2 is an H / W shape diagram of an internet matching system (WNAS) to which the present invention is applied;

3 is a protocol structural diagram of a system of the present invention;

4 is a protocol diagram of an Internet matching system (WNAS) to which the present invention is applied;

5 is a functional block diagram of an Internet matching system (WNAS) to which the present invention is applied;

6 is an MLPPP protocol packet format structure diagram;

7 is an ISDN subscriber's detailed call connection scenario of the Internet,

8 illustrates an Internet detailed call release scenario (slave release) of an ISDN subscriber;

9 illustrates an Internet detailed call release scenario (master release) of an ISDN subscriber;

10 is a call release procedure when abnormal termination;

11 is a block diagram of a system of the present invention.

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

2 shows a hardware configuration of an internet matching system (WNAS) 400 to which the present invention is applied.

HSNA board 410 responsible for connection with high speed switch (HSSF), WSPA board 420 which is the processor board of the Internet matching system, and router 430 and circuit switching unit (CSU) 440 are used. By accessing the Internet (Kornet) 600, which is an information provider (ISP), domestic and foreign information is made available.

3 is a protocol structural diagram of an internet matching device.

The user 100 uses an internet web service using the web browser 111. The user and the telephone network 200 and the Internet matching device 300 transmit data through a modem connection using the telephone network. The protocol used is the MLPPP protocol. Connection information processing programs 212 are mounted on the telephone network and the Internet matching devices 200 and 300. User data received through the telephone network is converted to the Internet protocol in the telephone network, Internet matching device (200, 300) is to go to the Internet network. The user's data converted into internet data is processed by the web infoshop program 513 in charge of the processing of the alternative authentication and the alternative billing in the web infoshop service system 500 and sent to the information provider 600. The information provider's web server 615 retrieves the information desired by the user and passes it to the web infoshop service system 600, and the web infoshop service system delivers it to the user.

FIG. 4 is a WNAS protocol shape mounted on the WSPA board 420 shown in FIG. 2 and is composed of a physical layer, a data link layer, a network layer, and an application layer.

The physical layer is composed of an HSNA interface 421 for connection with HSSF and an Ethernet interface (10BASE5) 422 for LAN connection. The data link layer uses MLPPP (LCP, IPCP) / PPP (423, 424, 425), and MAC for Ethernet to create data frames similar to HDLC (High Speed Data Link Control) for S-card or modem access to the Internet. / LLC 426 and ARP 427. The network layer consists of TCP / IP 428 and ICMP 429, and the final application layer consists of IP address management algorithm 430 and system application 431. The Internet matching system is a control block that handles S card correspondence of ISDN subscribers and telephone network subscribers, processing various modems and communication protocols, collecting raw billing data, and maintaining the subsystem's own operation, and packet data processing blocks for communication with HSNA. And statistical data collection function.

FIG. 5 is a functional block diagram of a WNAS to which the present invention is applied, and has the following functions.

The Password Authentication Protocol (PAP) 441 provides a function of determining and processing whether the MLPPP user can access the Internet when the protocol exchange with the Internet Protocol Control Protocol (IPCP) 442 is completed. When an account and password are sent from the user using PAP, the system determines whether the account is allowed and grants the service access right. This feature is intended for future use and now WNAS allows all users to pass through without access control. In addition, when the MLPPP user accesses the system and negotiates with the IPCP protocol 442, the IPAM 441 requests an IP address as a negotiation option, and performs the function of assigning an IP address. . Logically, the maximum number of IP addresses that can be assigned in IPAM is 253. Internet Protocol Control Protocol (IPCP) 442 is one of the Network Control Programs (NCPs) available in the MLPPP environment and provides the ability to configure, operate, and halt IP protocol modules across point-to-point links. . IPCP 442 uses the same packet switching scheme as LCP 443 and is exchanged when PPP reaches the network layer protocol stage. When the configuration of the selected network layer protocol is completed in this way, the IP packet is encapsulated in the information field of the PPP data link layer frame and sent on the link. Link Control Protocol (LCP) 443 also automatically negotiates MLPPP encapsulation format options with the other party to provide the flexibility to adapt to changing communication environments. To establish communication on a point-to-point link, each end of the MLPPP link must exchange LCP packets to establish and test the data link. Upon completion of the exchange, MLPPP arrives at the network protocol state, where NCP packets are exchanged to select and configure one or more network protocols. The link layer driver (LLD) 444 transmits MLPPP frames generated from the IP 445, LCP 443, and IPCP 442, and MLPPP frames received from the HSNA driver 446 to IP, LCP, and IPCP. Provides the ability to pass to In addition, it manages the state of MLPPP ports and controls the transmission of PPP frames according to the transmission / reception setup and release commands of the ports. In the LLD, frame data similar to HDLC is configured as an MLPPP frame or vice versa.

FIG. 6 illustrates the MLPPP protocol 423 packet format structure shown in FIG. 4 and is largely composed of two types. The (B) bit is set to 1 only for the first fragment of one MLPPP packet and the other fragments are set to zero. And (E) bit is set to 1 only in the last fragment of one MLPPP packet and the other fragments are set to zero. Finally, the (B) and (E) bits can be set to 1 at the same time, which means that the sequence number is increased at each fragment transmission. Network protocol packets are initially sealed according to a regular PPP procedure, and large packets are divided into multiple segments of appropriate size for multiple physical links. And address and control fields shall not be included in the logical entity to be fragmented.

7 is a call access procedure diagram required for an ISDN subscriber to access the Internet according to the present invention. As shown in FIG. 1, the ISDN subscriber 100 is an ISDN network 200, an ISDN matching device (hereinafter, ' INAS ', 300), a high speed switch (hereinafter referred to as' HSSF') 350, the Internet matching system (WNAS) 400 through the call connection procedure required to access the Internet 600.

Looking at the procedure, after the ISDN subscriber attempts to connect to the 1B channel of the two information channels (B channel) (211), the INAS receives a call connection request to the HSSF (212).

Upon receiving the call connection request, the INAS sends an acknowledgment signal to the ISDN subscriber indicating that the call connection request has been received from the HSSF through the master channel (213). After receiving this acknowledgment, a link control protocol (LCP) with the INAS is established through the master channel to the ISDN subscriber connected to the 1B channel (214). Accordingly, the ISDN subscriber and the INAS connected on the 1B channel perform an authentication protocol process 215. The INAS then sends an ML_IPC response signal 216 to the ISDN subscriber on the master channel. Accordingly, the ISDN subscriber and the INAS complete the multi-link connection of the 1B channel through the master channel (217). After the connection is completed, the multilink (ML) packet is transmitted (218), and the PPP frame through the master channel is transmitted (219). In operation 220, the packet is transmitted through the master channel when the packet is not the multi-link packet.

On the other hand, after the ISDN subscriber tries to connect to the 2B channel (221), the INAS receives a call connection request to the HSSF (222). Upon receiving the call connection request, the INAS transmits an acknowledgment signal indicating that the call connection request has been received from the HSSF through the master channel (223). An ISDN subscriber requesting access to the 2B channel receiving the acknowledgment signal establishes a link control protocol (LCP) with the INAS through the master channel (224). Accordingly, the ISDN subscriber and the INAS connected through the 2B channel perform an authentication protocol process 215. Thereafter, the INAS carries an ML_IPC (Multi-Link Inter Process Communication) response signal 226 on the master channel and sends it to the ISDN subscriber. Accordingly, the ISDN subscriber and the INAS complete the multilink connection of the 2B channel through the master channel (227). After the connection is completed, the multilink (ML) packet is transmitted (228), and the PPP frame on the master channel is transmitted (229). If the packet is not the multi-link packet, the packet is transmitted through the slave channel or the master channel (230, 231). In the packet transmission between the ISDN subscriber and the INAS, the PPP format 232 or the MLPPP format 233 is transmitted and received.

This completes the call setup process for the ISDN subscriber to access the Internet.

8 shows a sequence flow when an ISDN subscriber disconnects from a second channel, that is, a slave channel after connecting to 2B.

Referring to the flow, the connection control protocol (LCP) between the ISDN subscriber and the INAS set as the slave channel is released after connecting to the 2B channel (241). The INAS makes a release request 242 with the HSSF to the ISDN subscriber through the slave channel, and receives a release acknowledgment 243 accordingly. Thereafter, the call connected through the 2B channel is released (244). The same applies to the PPP frame 245 transmitted through the slave channel, the case of the ML packet (246), and the case of the non-ML packet through the slave channel (247).

Next, the INAS releases the termination of the link control protocol (LCP) between the ISDN subscriber and the INAS set as the master channel after connecting to the 1B channel (248). After the INAS makes a release request 249 with the HSSF through the master channel, the INAS receives a release acknowledgment 250 accordingly. Thereafter, the call connected through the 1B channel + is released (251).

9 shows a sequence flow when an ISDN subscriber disconnects from a first channel, that is, a master channel, after connecting to 2B.

After connecting to the 1B channel, the link control protocol (LCP) between the ISDN subscriber and the INAS set as the master channel is released (260). After the INAS makes a release request 261 with the HSSF through the master channel, the INAS receives a release acknowledgment 262 accordingly. The INAS then requests the ISDN subscriber (or vice versa) to release the call connected over the 1B channel (263). In the case of the PPP frame 264 transmitted through the master channel, the ML packet 265, and the non-ML packet through the master channel 266, the same operation is performed.

After connecting to the 2B channel, the link control protocol (LCP) between the ISDN subscriber and the INAS set as the slave channel is released (267). After the INAS makes a release request 268 with the HSSF through the slave channel, the INAS receives a release acknowledgment 269 accordingly. Then, the call connected through the 2B channel is released (270).

10 is a diagram illustrating a call release procedure when an ISDN subscriber accesses a 2B channel and terminates abnormally.

If the ISDN subscriber terminates abnormally after accessing the 2B channel, the call is released (281). The ISDN subscriber makes a call release request (282) with the HSSF through the slave channel to the INAS and receives the release acknowledgment (283). In the case of the PPP frame 284 and the ML packet transmitted through the master channel (285), and the non-ML packet transmitted through the master channel (286), the 1B channel call is released (287). The ISDN subscriber makes a call release request (288) with the HSSF to the INAS through the master channel, and receives a release acknowledgment (289) accordingly through the master channel.

11 illustrates the software flow of the system of the present invention, the contents of which are as follows.

Each task operates as described in the functional block structure of FIG. 5 above. The dual MLPPP timer task is a task that provides a timer tick that occurs at regular intervals to operate a restart timer. That is, when a timer driving command is received from the tasks related to the timer, the timer is added to the current timer list and the existing timers in the timer list are updated. On the other hand, upon receiving the timer sound generated in the hardware, the timers that are existing in the timer list are updated, and the timer deleted from the timer list according to the update is delivered to the task as completed. This timer sound is generated every 10 ms using the free operation counter of the MFP.

The present invention as described above can obtain the following effects.

First, the internet matching system has the following functions in order to provide an open Internet access service and a chargeback agency service using the MLPPP protocol. ISDN subscribers are provided with Internet service using MLPPP (RFC 1990) when using PRI or BRI. Since 1B speed is 64Kbps, when connected to 2B, the speed is 128Kbps and subscribers can use Internet service without boredom. have. At this time, the INAS (ISDN Network Access System) provides the link layer of the PPP (RFC 1661) and the multi-link layer function of the MLPPP to provide the MLPPP function, the Internet matching device provides the function of the network layer of the PPP.

The second is to make the Internet available to ISDN subscribers at a high speed. It provides a method independent of the network structure and software structure of users and information providers currently provided in the Internet. In addition, the subscriber can easily access and use the service anytime and anywhere with a given PRI number and S-card regardless of the internal structure and environment.

Claims (1)

In a high-capacity communication processing system, an ISDN subscriber connects to the Internet through an ISDN matching device (INAS) and a high speed switch (HSSF) using a multilink point-to-point (MLPPP) protocol in an Internet matching system (WNAS). A first step in which an ISDN subscriber transmits and receives an MLPPP packet having a multi-link call connection with the INAS in the order of 1B channel and 2B channel with confirmation of HSSF; A second process of releasing the connected 2B channel call and the 1B channel call in order to release the call from the slave channel after the ISDN subscriber accesses the 2B channel; When the ISDN subscriber terminates abnormally after accessing the 2B channel, the ISDN subscriber in the high-capacity communication processing system comprising a third process of releasing the connected 2B channel abnormal call release and the 1B channel call release order. How to access the internet.

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