KR20000073405A - Internet subscriber network system - Google Patents

Abstract

PURPOSE: An internet subscriber network system is provided to transmit a data signal by using a 10M ethernet, a 100M ethernet, a 1G internet technology without a digital signal manner, to switch an ethertnet packet from a switching node to a desired root to build a subscriber connecting network, so as to supply cheap and super speed internet services. CONSTITUTION: Community centers are connected to a gigabit ethernet port of an internet backbone network through a first ray path to directly transmit an ethernet packet, and supply a community information server and a routing function to support a logical segmentation of a subscriber group, then perform a switching for connecting remote node devices to the backbone network of the gigabit ethernet port. The remote node devices are connected to the community centers through a second ray path, and transceive a giga optical signal having a signal format according to an ethernet media connection controlling protocol. The remote node devices have transmitting functions of the ethernet packet, and perform ethernet switchings of central node devices to connect the central node devices to one of the community centers by a fast ethernet interface. The central node devices share a phone line of a subscriber house, and have phone-LAN modules transmitting phone signals and local area network(LAN) data signals. The central node devices transmit the ethernet packet by the phone-LAN modules at 10Mbps to perform a switching of the ethernet packet, and connect the switched ethernet packet through one of the remote node devices and one line of two-wire phone lines, four-wire unshielded twisted fair cables, 100MFX optical cables. A subscriber equipment is connected to one of the phone-ran modules installed to one of the central node devices to divide a transmitted signal into the LAN data signal and the phone signal, and transmit the ethernet packet, which is the LAN data signal, to a LAN card to transmit the phone signal to a phone.

Description

Internet Subscriber Network System

The present invention relates to an Internet subscriber network system, and more particularly, to be connected to an Internet backbone network to provide high-speed Internet service to a remote Internet subscriber, as well as to separate access equipment through a telephone line of a home subscriber network. The present invention relates to an Internet subscriber network system that allows the user to use the Internet and a telephone at the same time without a breakdown.

Internet service is becoming an indispensable service in information and communication that is used as a means of collecting and transmitting various information. As such, in order to use the Internet service, an Internet network must be connected.

1 is a block diagram illustrating a method of connecting to an Internet network in general.

As shown here, the most commonly used method for accessing the Internet network is a method for accessing through a general telephone network using an Internet service provider and a dial-up modem.

When connected to the Internet through the telephone modem method, the digital signal to be transmitted is converted into an analog signal and then transmitted and received through a copper wire. However, copper has a disadvantage in that it is very difficult to transmit data having an speed of 56 Kbps or more as an analog signal. Therefore, there is a problem in that a video or a large amount of text data cannot be transmitted at a sufficiently high speed when the Internet service is accessed through a telephone modem.

Therefore, the Internet connection method through Integrated Service Digital Network (ISDN) is widely used to increase the transmission speed, but ISDN, which is currently implemented, is also a circuit switching network through copper wire, which greatly improves the transmission speed compared to general telephone networks. I can't let you.

On the other hand, there have been various proposals for utilizing the optical communication network to increase the transmission speed. Ideally, as an optical network, fiber-to-the-home (FTTH) subscriber network that can transmit data through the optical fiber by laying the optical fiber to each home individually. However, the FTTH method has a problem in economics in that an optical network unit (ONU) must be separately installed in each home. Moreover, it is very difficult to receive communication service in each home based on the FTTH method because it requires a huge cost and time to install the fiber to each home.

Accordingly, a fiber-to-the-curb (FTTC) scheme in which a plurality of homes jointly use optical fibers has been proposed. In the FTTC system, the ONU is installed in the curb on the street, and the optical fiber is laid up to the ONU, and the copper is connected from the ONU to each home. According to the FTTC method, since a plurality of households share the ONU and the optical fiber, the economic burden of each household is reduced, and it is not necessary to install the optical fiber in each household. However, even under the FTTC method, the problem of having to lay the optical fiber and installing the ONU until the curve remains.

Accordingly, various methods have been sought to utilize existing cable television networks or copper wire telephone networks instead of newly laying optical fibers. That is, in the Internet subscriber network through the cable TV network, the cable TV subscriber purchases the cable modem, installs it in his computer, and accesses the Internet through it.

However, cable TV is not yet widespread, and it will take considerable time for most homes to use cable TV networks. Moreover, cable modems are very expensive compared to telephone modems, which is a burden for general home use. In addition, there is the same problem that it takes a long time to install the expensive equipment and transmission network installed in the home, even in a hybrid fiber coax (HFC) network that transmits data by using an optical cable to the ONU and a coaxial cable from the ONU to a subscriber. .

On the other hand, in order to utilize the copper wire of the general telephone network, according to the DSL (Digital Subscriber Line) method of directly digitally modulating the data without converting the data into an analog signal, the DSL equipment must be installed at the telephone company in the service area. Since a telephone station needs to be connected to the Internet at a high speed, it is very difficult to implement this for an Internet service provider other than a general telephone service provider.

The present invention has been made to solve the above problems, and an object of the present invention is to reduce the network construction cost and installation cost of each subscriber of the Internet service provider, and to provide an Internet subscriber network system to enable high-speed data transmission. Is in.

1 is a block diagram showing a general Internet subscriber network.

2 is a block diagram showing an embodiment of an Internet subscriber network system according to the present invention.

Figure 3 is a block diagram showing a regional center system according to the present invention.

4 is a block diagram showing a remote node device according to the present invention.

5 is a block diagram showing a concentrated node device according to the present invention.

6 is a configuration diagram according to the protocol of the Internet subscriber network system according to the present invention.

7 is a state diagram of use of the Internet subscriber network system according to the present invention.

-Explanation of symbols for the main parts of the drawings-

10, 10 ': Regional Center 14: Gigabit Switch

16: Internet server 30: remote node device

50: concentrated node device 70: subscriber equipment

The present invention for realizing the above object is an Internet subscriber network system connected to the Internet backbone network and connected to a plurality of Internet subscriber equipment to provide a high-speed Internet access service; It is connected to the Gigabit Ethernet port of the Internet backbone network via a first optical fiber to directly transmit the Ethernet packet, provides a local information server and routing function to support logical segmentation of subscriber groups, and connects multiple remote node devices to the Gigabit Ethernet. A plurality of regional centers switching to connect to the backbone network; It is connected to the regional center through a second optical path and transmits and receives a gigabit optical signal having a signal format according to the Ethernet medium access control protocol, and has an Ethernet packet transmission function. A plurality of remote node devices connected to any one of the plurality of regional centers; It has multiple phone-LAN modules that share the telephone lines of subscribers' homes and carry telephone signals and LAN data signals, and transfer and switch Ethernet packets at 10 Mbps through multiple phone-LAN modules through a fast Ethernet link. A plurality of concentrated node devices for connecting with any one of the plurality of remote node devices; The LAN data signal and the telephone signal are separated from the signal received by being connected to any one of a plurality of telephone-LAN modules installed in any one of the lumped node devices, and the Ethernet packet, which is the LAN data signal, is transmitted to the LAN card. And subscriber equipment to be delivered to the telephone.

Referring to the operation of the present invention made as described above are as follows.

Transmit Internet packet and telephone signals simultaneously by connecting multiple regional centers, remote node devices and converged node devices to each other through optical fiber and UTP over Gigabit Internet backbone network, and sharing the phone lines Therefore, not only the high-speed Internet service can be directly supplied through the in-house subscriber equipment, but also a telephone signal can be transmitted and received.

Hereinafter, exemplary embodiments of the present invention will be described with reference to the accompanying drawings. In addition, this embodiment is not intended to limit the scope of the present invention, but is presented by way of example only.

2 is a block diagram showing an embodiment of an Internet subscriber network system according to the present invention.

As shown here, the Internet subscriber network system is based on the assumption that a city is a service area, and includes a regional center 10, a remote node device 30, a centralized node device 50, and a subscriber equipment 70. It is configured to include.

The regional center 10 is located approximately in the center of the serviced city, the remote node device 30 is located in a line distribution room (MDF) of an apartment management office in an apartment dense area, and the centralized node device 50 is located in each apartment. It is desirable to be located in a single motion line distribution box.

Meanwhile, the remote node device 30 may be located in a line distribution room (MDF) of a building to provide a service for an office building. In this case, the concentrated node device 50 may be installed to be located in a line distribution box of each floor. It is desirable to.

The regional center 10 is connected to another regional center 10 'by a WAN or to a gigabit internet backbone network, and is connected to a plurality of remote node devices 30 to transmit internet traffic in both directions.

Figure 3 is a block diagram showing a regional center system according to the present invention.

As shown here, the regional center 10 includes a high speed router 12 for segmentation with an external network, and a gigabit switch 14 that performs a switching function for a plurality of remote node devices 30.

The gigabit switch 14 may be connected to a high speed server such as an internet server 16 or a cache server 18.

At this time, the connection between the regional center 10 and the other regional centers 10 ', and the regional center 10 and the Internet backbone network are made through optical paths.

On the other hand, the connection between the regional center 10 and the remote node device 30 is an optical fiber line installed in the pipeline or telephone pole, so that the remote node device 30 can support up to 20 kilometers (Km) Ethernet optical connection port It is connected to the regional center 10 via.

In this case, the optical signal can have an optical output of -10 dBm or more to be connected by a gigabit Ethernet interface with a plurality of remote nodes several Km to several tens of Km apart.

The remote node device 30 is installed between the regional center 10 and the centralized node device 10 to transmit internet traffic in both directions.

4 is a block diagram showing a remote node device according to the present invention.

As shown here, the remote node device 30 is comprised of a LAN switch 32, a power supply 34 and telephone-LAN 36 (T-LAN) equipment. As described above, the remote node device 30 is connected to the regional center 10 through an optical connection port, and transmits and receives an optical signal having a signal format according to the Ethernet MAC protocol. In particular, the connection line between the regional center 10 and the remote node device 30 is duplicated, and a spare line 20b is provided in addition to the main line 20a. Accordingly, when a failure occurs in the main line 20a, the active line is automatically switched to the spare line 20b to increase the stability and reliability of the system.

On the other hand, the remote node device 30 is connected to 10 to 24 concentrated node devices 50 by a star structure. The LAN switch 32 of the remote node device 30 is connected to each concentrated node 50 through a general telephone line to exchange Fast Ethernet traffic. At this time, 100 Mbps telephone-LAN 36 equipment is used for data communication through the telephone line. Telephone-LAN 36 equipment is a device that transmits the telephone signal and data at the same time in a short distance section and receives the telephone signal and data by filtering at the receiving side. The telephone-LAN 36 equipment is a remote node device ( 30) and each central node device 50 are provided in pairs of 1 unit each for data transmission and reception.

Meanwhile, in another embodiment of the present invention, when an unshielded twisted pair (UTP) category 5 cable or a 4-wire cable is installed between the remote node device 30 and the central node device 50. Internet traffic can also be sent over these cables without using telephone-LAN equipment.

The centralized node device 50 is installed between the remote node device 30 and the subscriber equipment 70 to transmit internet traffic in both directions.

5 is a block diagram showing a concentrated node device according to the present invention.

As shown here, the centralized node device 50 system includes a LAN switch 52, a power supply 54, a 100 Mbps telephone-LAN equipment 56 and a number of 10 Mbps telephone-LAN equipment 58. ). The 100 Mbps telephone-LAN equipment 56 corresponds to the telephone-LAN equipment 56 of the remote node apparatus 30. The 100-Mbps telephone-LAN equipment 56 is a remote node apparatus (a data-over-voice method through a general telephone line). Internet traffic can be transmitted between the network 30 and the central node device 50.

On the other hand, the centralized node device 50 is connected in a star structure with about 24 subscriber equipments 70 through a general telephone line. In the centralized node device 50 and the subscriber equipment 70, 10-Mbps telephone-LAN 58 equipment is installed in pairs, respectively. The centralized node apparatus 50 collects the traffic received from each subscriber equipment 70 and transmits it to the remote node apparatus 30, and also switches the traffic from the remote node apparatus 30 so as to either subscriber equipment for each packet. Transfer to 70.

Each subscriber equipment 70 includes a computer and an Ethernet adapter (NIC) installed within the computer. In particular, as the Ethernet adapter (NIC), a 10 Mbps telephone-LAN equipment for connecting to the central node device 50 is used.

6 is a configuration diagram according to the protocol of the Internet subscriber network system according to the present invention.

As shown here, the optical path used for the connection between the regional center 10 and the Giga Internet backbone network and the connection between the regional center 10 and the remote node device 30 is transmitted using the 1G physical layer protocol. Then, the connection between the remote node device 30 and the central node device 50 is transmitted through a UTP line or a telephone line using the 100M physical layer protocol. At this time, the remote node device 30 and the concentrated node device 50 may be connected to each other by using an optical module by a 100M physical layer protocol.

7 is a state diagram of use of the Internet subscriber network system according to the present invention.

As shown here, the regional center 10 is connected to the Giga Internet backbone network, and the remote node device 30 is connected to the Giga Ethernet protocol by the regional center 10 and the optical path, and the remote node device 30 is fast. It is configured to provide high-speed Internet service by connecting to a computer in each premises with a LAN cable through a general telephone subscriber network and a telephone-LAN module while connected to the central node device 50 through the Ethernet protocol.

By using the optical path as described above, the digital signal system used for signal transmission, such as T1, E1, DS3 signal or synchronous signal system STM1, STM4, STM12 The data signal is transmitted using only 10M Ethernet, 100M Ethernet, and 1G Ethernet technologies, and the Ethernet packet is switched to the desired route at the switching node to form a high-speed subscriber network without using the signal.

As described above, the present invention has an effect that the Internet service provider can greatly reduce the network construction cost because the Internet subscriber network uses an existing telephone line installed at the end.

In addition, since each subscriber only needs relatively low-cost phone-LAN equipment, the economic burden on equipment purchase is reduced, and as the installation cost of the Internet service provider decreases, installation cost sharing can be greatly reduced.

In particular, the signal transmission between the regional center and the subscriber equipment is based on the Ethernet signal format. Accordingly, the remote node device simply converts the optical signal and the electrical signal to transfer the signal from the regional center to the central node device. Since the signal from the local center needs to be transmitted, the equipment cost can be further reduced by eliminating the need for an optical station unit (ONU).

On the other hand, since the regional center and the remote node device are optically connected and the remote node device and the subscriber equipment are connected by telephone-LAN equipment, the regional center and the subscriber equipment can transmit and receive data at high speed and realize high-speed Internet service. Will be.

In addition, by using optical paths, digital signals such as T1, E1, DS3 or synchronous signals STM1, STM4, STM12, etc., which have traditionally been used for signal transmission in the subscriber network for connecting the regional center and subscribers, can be used. Without using it, data signals can be transmitted using only 10M Ethernet, 100M Ethernet, and 1G Ethernet technologies, and the Ethernet packets can be switched to the desired route directly from the switching node to provide a high speed subscriber network.

Claims (7)

An internet subscriber network system connected to an internet backbone network and connected to a plurality of internet subscriber equipments to provide a high speed internet access service; It is connected to the Gigabit Ethernet port of the Internet backbone network via a first optical fiber to directly transmit the Ethernet packet, provides a local information server and routing function to support logical segmentation of subscriber groups, and connects multiple remote node devices to the Gigabit Ethernet. A plurality of regional centers switching to connect to the backbone network; It is connected to the regional center through a second optical path and transmits and receives a gigabit optical signal having a signal format according to the Ethernet medium access control protocol, and has an Ethernet packet transmission function. A plurality of remote node devices connected to any one of the plurality of regional centers; It has multiple phone-LAN modules that share the telephone lines of subscribers' homes and carry telephone signals and LAN data signals, and transfer and switch Ethernet packets at 10 Mbps through multiple phone-LAN modules through a fast Ethernet link. A plurality of centralized node devices configured to be connected to any one of the plurality of remote node devices via any one of a line group consisting of a two-wire telephone line, a four-wire unshielded twisted pair cable, and a 100M FX optical cable; The LAN data signal and the telephone signal are separated from the signal received by being connected to any one of a plurality of telephone-LAN modules installed in any one of the lumped node devices, and the Ethernet packet, which is the LAN data signal, is transmitted to the LAN card. Subscriber equipment to the telephone Characterized in that comprises a. 2. The method of claim 1, wherein at least one of the plurality of remote node devices is arranged so that a four-wire telephone line already in place within the area between the remote node device and the central node device is within a suitable distance for carrying a 100 Mbps Ethernet signal. Each of the centralized node devices installed in the line distribution room of the apartment management office, bundled, switched again, connected to a higher regional center through a pipeline or a common ward, and connected to a remote node device installed in the line distribution room, In addition to facilitating the circuit configuration by connecting the pre-installed telephone lines in the apartment premises, each apartment in each apartment of the apartment is designed to centralize several subscriber lines in the apartment building, to provide convenient power supply, and to minimize the noise level generated by the telephone line. Internet subscriber network system, characterized in that installed in the circuit distribution box . The circuit distribution room of claim 1, wherein at least one of the plurality of remote node devices uses an existing telephone line to facilitate line connection between the remote node device and the centralized node device and to maintain signal transmission distances. When the remote node device is installed in the circuit distribution room, the centralized node devices connected to the remote node device are installed in the circuit distribution box provided in each floor of the building to facilitate the circuit connection and maintain the signal transmission distance. Internet subscriber network system, characterized in that. The Internet subscriber network system according to claim 1, wherein the second optical path is composed of a main line and a spare line, and the access channel is switched to the spare line when an error occurs in the transmission and reception of an optical signal. The Internet of claim 1, wherein the telephone-LAN module connects two telephones using a four-wire telephone line so that traffic can be delivered to a general telephone network so that the Internet and two telephone services can be used simultaneously. Subscriber Network System. 2. The method of claim 1, wherein the remote node device and the converged node device are connected to each other by telephone-LAN equipment to transmit and receive signals by integrating or separating the same through a same physical medium by a difference in characteristics of a telephone signal and a characteristic of a data signal. Internet subscriber network system characterized in that. According to claim 1, wherein the output of the optical signal transmitted and received via the first optical line and the second optical line is -10dBm or more, and the optical module having a very high sensitivity of the optical sensor is applied to provide a high-speed link in the local subscriber network Internet subscriber network system characterized in that it is possible to.