KR20070000080A - Xdsl communication service system and method thereof using the advanced disposition type dslam - Google Patents

Abstract

An xDSL communication service system using a forward deployment type DSLAM and a method thereof are provided to minimize transmission distance between an IP(Internet Protocol)-DSLAM and a subscriber, thereby preventing service speed from being deteriorated even during transmission of speed bigger than 100Mbps, and making a VDSL(Very high-data rate Digital Subscriber Line) service possible by connecting an aggregation switch with the IP-DSLAM, having long transmission distance, through the optical cable. An xDSL(x Digital Subscriber Line) communication service system using a forward deployment type DSLAM comprises the followings: a router(241) of a communication station(240) which routes a packet transmitted through Internet(242); an aggregation switch(232) which is installed in an MDF(Main Distributing Frame) of a complex building and switches the packet transmitted through the router(241); the DSLAM(Digital Subscriber Line Access Multiplexer)(221) which is connected with the aggregation switch(232) through an optical cable(260), and installed in the underground of the complex building; and plural subscriber terminals(212) within the complex building.

Description

{XDSL communication service system and method} using the advanced disposition type DSLAM}

Recently, as subscriber traffic increases at a high speed, optical communication services such as fiber to the curb (FTTC) or fiber to the home (FTTH), in which optical paths are installed to the threshold of subscriber homes, have become commonplace.

In this atmosphere, VDSL, which was introduced after Asymmetric Digital Subscriber Line (ADSL), enables interactive high-capacity multimedia services such as internet broadcasting, video on demand (VOD), remote education, and high-definition television. ) Is linked with optical communication service, and this VDSL technology is evaluated as the final step for the domesticization of optical communication.

Hereinafter, the VDSL communication service system as described above will be described with reference to the accompanying drawings. However, hereinafter, for convenience of description, the VDSL communication service system will be described based on the direction of the subscriber terminal from the communication station, that is, the downloading direction.

1 is a configuration diagram schematically showing a VDSL communication service system according to the prior art. As shown, the VDSL communication service system 100 includes an Internet network 132 and a router 131 located at the communication company side 130, and an MDF 120 which is a communication concentrating facility of a complex building management office such as an apartment or a multi-unit house. A converged switch 123, a voice over internet protocol (VoIP) access gateway 121, an Internet protocol type digital subscriber line access multiplexer (hereinafter referred to as IP-DSLAM) 122, and a subscriber premises 110 It is configured to include a VDSL subscriber terminal 112 connected to the Internet network 132 through a general voice terminal 111, and VDSL modem 113, and the like installed in.

On the other hand, in such a VDSL communication service system 100, the router 131 of the communication station 130 is the most appropriate network using the IP address (internet protocol address) of the packet transmitted through the Internet network 132. The packet is routed to be transmitted to the VDSL subscriber station 112 through a path.

In addition, the aggregation switch 123 in the MDF 120 switches packets routed to the plurality of IP-DSLAMs 122 and the plurality of VoIP access gateways 121. In addition, the IP-DSLAM 122 switches the traffic aggregation of the VDSL subscriber line and the plurality of VDSL subscriber stations 112, and the VoIP access gateway 121 can provide the voice service provided by the PSTN in the packet network. In order to ensure that the normal voice terminal 111 and the Internet network 132 is relayed.

Accordingly, the VDSL subscriber station 112 of the subscriber premises 110 is connected to the aforementioned IP-DSLAM 122 through the VDSL modem 113, and the general voice terminal 111 is the VoIP access gateway 121 described above. ) And get services.

However, according to the conventional VDSL communication service system as described above, since the IP-DSLAM 122 is installed in the MDF 120 of the complex building management office, it is practically impossible to transmit 100 Mbps packets that have been recently serviced. There was a problem.

That is, since the IP-DSLAM 122 and the subscriber station 112 in the complex are interconnected by a general telephone line, the distance from the IP-DSLAM 122 to each subscriber station 112 is different due to the characteristics of the xDSL technology. The farther away, the lower the transmission speed, and this slowdown is especially acute in the 100Mbps VDSL technology.

Accordingly, the present invention has been proposed to solve the above problems, VDSL using a forward-positioning IP-DSLAM to enable a high-speed VDSL service by shortening the transmission path length between the VDSL subscriber station and the IP-DSLAM To provide a communication service system.

Therefore, the xDSL communication service system using the forward-arranged DSLAM of the present invention for achieving the above object is installed in the router of the communication station side for routing the packet transmitted through the Internet network, and the MDF of the complex building, the router And a plurality of subscriber stations in the complex and a digital subscriber line connection multiplexer connected to the aggregation switch for switching a packet transmitted through the aggregate switch and an optical cable, and installed in the basement of the complex. .

On the other hand, xDSL communication service method using the forward-arranged DSLAM of the present invention, the first step that the packet transmitted through the Internet network is routed by the router on the communication station side, and the packet transmitted through the router is a complex building A second step of switching by an aggregation switch installed in an MDF; and a third step of switching and switching the switched packets by a digital subscriber line connection multiplexer connected by the aggregation switch and an optical cable and installed in the basement of the complex. And a fourth step of transmitting the switched packet of the third step to each subscriber station.

Hereinafter, with reference to the accompanying drawings it will be described in detail a VDSL communication service system and method using a forward-aligned IP-DSLAM according to an embodiment of the present invention.

Figure 2 is a schematic diagram showing a VDSL communication service system using an advanced batch IP-DSLAM according to the present invention. As shown, the VDSL communication service system of the present invention includes an Internet network 242 and a router 241 located in a communication company 240, an aggregation switch 232 and a VoIP access gateway 231 installed in the MDF 230. And a VDSL subscriber station 112 connected to the Internet network 242 via an IP-DSLAM 221 rhk installed in the basement of the complex, a general voice terminal 211 installed in the subscriber's premises, and a VDSL modem 213. It is configured to include).

Here, the router 241 of the communication company 240 routes the packet so that the packet transmitted through the Internet network 242 is transmitted to the VDSL subscriber station, and the aggregation switch 232 in the MDF 230 is a plurality of IPs. -Switch the DSLAM 221 and the plurality of VoIP access gateways 231, the IP-DSLAM 221 is installed in the basement of the complex to switch the subscriber line and the plurality of subscriber station 212, VoIP The access gateway 231 relays the voice terminal 211 and the Internet network 242 so that the voice service can be provided in the packet network as it is. The VDSL subscriber station 212 in the subscriber premises is connected to the above-described IP-DSLAM 221 through a modem 213, and the voice terminal 211 is connected to the VoIP access gateway 231 described above.

As described above, the present invention is installed in the basement of the complex so that the IP-DSLAM 221 can reduce the transmission distance with the end subscriber terminal 212 in the complex different from the prior art. However, in this case, the IP-DSLAM 221 may be installed in the basement directly below the complex to reduce the transmission path to each subscriber station 212 in the complex.

Further, the aggregation switch 232 in the MDF 230 and the IP-DSLAM 221 installed in the basement of the complex are interconnected by optical cables. This is because, as described above, the IP-DSLAM 221 is advanced from the MDF 230 to the basement of the complex, and thus the distance between the subscriber station 212 and the IP-DSLAM 221 is closer, but the opposite level. This is because the distance between the IP-DSLAM 221 and the aggregation switch 232 is further increased.

Hereinafter, with reference to the accompanying Figure 3 will be described a VDSL communication service method using a forward-aligned IP-DSLAM 221 according to an embodiment of the present invention.

3 is a block diagram illustrating a VDSL communication service method using the forward-aligned IP-DSLAM 221 according to the present invention. Referring to FIG. 3 with reference to the configuration of FIG. 2, first, a packet transmitted through the Internet network 242 is delivered to the aggregation switch 232 via the router 241, and the packet is transmitted to a plurality of IP-DSLAMs ( 221 is switched by the aggregation switch 232 to be switched to the transmission.

Here, the IP-DSLAM 221 is installed in the basement of the complex to form the shortest transmission path with each VDSL subscriber station 212 in the complex. That is, in the present invention, the IP-DSLAM 221 is directly directed from the basement of the composite building, whereas the IP-DSLAM 221 is installed in the MDF 230 and the packet is transmitted through the second path. Since the packet is transmitted through the first path, the transmission speed can be improved as compared with the related art.

On the other hand, the distance from the aggregation switch 232 to the IP-DSLAM 221 by moving the IP-DSLAM 221 forward to the basement of the composite building as described above, instead of using a conventional telephone cable By using the optical cable 260 can be compensated.

In this way, the packet transmitted to the IP-DSLAM 221 via the optical cable is transmitted to the VDSL modem 213 of each subscriber through the entry pipe 215 in which the telephone line 270 is embedded. Accordingly, the multiplexing of each subscriber station 212 is possible, it is possible to receive a high-speed packet transmission of the 100Mbps class through the existing VDSL subscriber telephone line 270.

The VDSL communication service system and the method using the forward-aligned IP-DSLAM 221 according to the present invention have been described above. Such a technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

For example, the above description has been given using the VDSL technology as an example, but the present invention is not limited thereto, and various types of xDSL such as ADSL, symmetric DSL (SDSL), HDSL (high bit rate DSL), and IDSL (ISDN DSL) may be used. Applicability to the techniques will be apparent. In addition, it will be apparent that the present invention can be applied to DSLAM of ATM type in addition to the IP-DSLAM described above.

Therefore, the exemplary embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the appended claims rather than the foregoing detailed description, and the meaning and scope of the claims are as follows. And all changes or modifications derived from the equivalent concept should be interpreted as being included in the scope of the present invention.

According to the VDSL communication service system and the method using the forward-arranged IP-DSLAM 221 of the present invention, the transmission distance between the IP-DSLAM 221 and the subscriber is minimized, so that the service speed is increased even when the transmission speed is 100 Mbps or more. It is possible to prevent the deterioration and to connect the aggregation switch 232 and the IP-DSLAM 221, which have a long transmission distance, by an optical cable, thereby enabling high-speed VDSL service.

1 is a configuration diagram schematically showing a VDSL communication service system according to the prior art.

Figure 2 is a schematic diagram showing a VDSL communication service system using an advanced batch IP-DSLAM according to the present invention.

3 is a block diagram illustrating a VDSL communication service method using the forward-aligned IP-DSLAM according to the present invention.

<Description of the symbols for the main parts of the drawings>

212: subscriber station 213: VDSL modem

221: IP-DSLAM 231: VoIP Access Gateway

232: aggregation switch 241: router

242: internet network 250, 260: optical cable

Claims (2)

A router on a communication company side for routing the packets transmitted through the Internet network; An aggregation switch installed in the MDF of the complex building and switching a packet transmitted through the router; A digital subscriber line connection multiplexer (DSLAM) connected by the aggregation switch and an optical cable and installed in the basement of the complex building; And A plurality of subscriber stations in the complex XDSL communication service system using a forward-aligned DSLAM, characterized in that it comprises a. A first step in which a packet transmitted through an internet network is routed by a router of a communication company side; A second step in which the packet transmitted through the router is switched by an aggregation switch installed in the MDF of the complex; A third step in which the switched packet is collected and switched by a digital subscriber line connection multiplexer connected to the aggregation switch by an optical cable and installed in the basement of the complex building; And A fourth step in which the switched packet of the third step is transmitted to each subscriber station XDSL communication service method using a forward-aligned type DSLAM comprising a.