KR101027588B1 - Apparatus and Method for Interworking Mobile Communication Network with Digital Subscriber Line Network - Google Patents

Abstract

The interworking method between the mobile Internet network and the DSL network according to an embodiment of the present invention for transmitting and receiving data according to the protocol of the access point of the DSL network connected to the portable Internet network and the type of convergence sublayer used by the terminal is provided from the DSL network. Receiving first downlink data, acquiring second downlink data corresponding to a type of convergence sublayer used by a terminal using the first downlink data and the protocol of the first downlink data; And a base station and a control station for transmitting and receiving data to and from each other according to the type, and a tunnel identified by a data path tag mapped to the service flow. Characterized in that it comprises a step.

DSL, Mobile Internet, Interlocking Devices

Description

Apparatus and Method for Interworking Mobile Communication Network with Digital Subscriber Line Network}

The present invention relates to a method and an apparatus for interworking a portable Internet network and a DSL network. A method and apparatus for interworking are provided.

Digital Subscriber Line Network (DSL Network) is a link protocol of Broadband Remote Access Server (BRAS) and Terminal Equipment (TE). PPP over Ethernet (PPPoE) is used for control and management, and IP over Ethernet (IPoE) is used to guarantee QoS of data transmission, reception, voice, and video services.

Therefore, in recent years, there is an increasing demand for DSL service providers to provide these DSL services over the air.

In particular, WiMAX seeks an interworking method between an application service provider (ASP), a network service provider (NSP), or a BRAS based on the IEEE 802.16 standard. Among them, "IEEE 802.16-2004 October 2004, Air Interface for Fixed and Mobile Broadband Wireless Access Systems Amendment for Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands, August 2004", "IEEE 802.16e-2005 March 2006, Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands, "" WiMAX End-to-End Network Systems Architecture, "and" WiMAX Forum Network Architecture. "

However, since the interworking procedure between the portable Internet network and the DSL network is not clearly defined for the network architecture, protocol configuration, and data transmission / reception for this purpose, there is a difficulty in providing an interworking service between the portable Internet network and the DSL network.

The present invention is to solve the above-described problems, the mobile Internet network and DSL for transmitting and receiving data according to the connection point of the DSL network connected to the portable Internet network, the data transmission protocol at the access point and the type of convergence sub-layer used by the terminal It is a technical problem to provide a network interworking method and apparatus.

The present invention also provides a method and apparatus for interworking with a DSL network and a portable Internet network capable of processing downlink data received from a DSL network or uplink data for transmission from a MS to a DSL network in a portable Internet network interworking with a DSL network. It is technical problem to provide.

According to an aspect of the present invention, there is provided a method for interworking a portable Internet network and a DSL network according to an aspect of the present invention, when receiving first downlink data from a DSL network, the first downlink data and the first downlink data. Obtaining second downlink data corresponding to the type of convergence sublayer used by the terminal using a protocol of one downlink data; And a tunnel identified by the second downlink data as a data path tag mapped to a service flow when the convergent sublayer is IP-CS, and the convergent sublayer is an Ethernet-CS. In this case, the method comprising the step of transmitting to a portable Internet network including a base station and a control station transmitting or receiving using a tunnel identified by a data path tag mapped to an Ethernet address of the terminal. It features.

In accordance with another aspect of the present invention, a method for interworking a portable Internet network and a DSL network according to another aspect of the present invention may be performed according to a tunnel identified by a data path tag mapped to a service flow and a type of convergence sublayer used by the terminal. Receiving first uplink data from a portable Internet network including a base station and a control station for transmitting and receiving data; Obtaining second uplink data conforming to a protocol of an access point of a DSL network connected to the portable Internet network using the first uplink data; And transmitting the second uplink data to the DSL network through the access point.

According to another aspect of the present invention, there is provided a method for interworking a portable Internet network and a DSL network in a method of interworking a portable Internet network and a DSL network including a control station and a base station. Receiving downlink data of a DSL network processed to conform to the type of convergence sublayer to be used; Data path tag corresponding to the service flow of the downlink data when the convergence sublayer is IP-CS and a data path tag mapped to the Ethernet address of the terminal when the convergence sublayer is Ethernet-CS Determining a base station transmitting and receiving data with the terminal according to a connection identifier mapped to the data path tag using a tunnel identified by Tag); And transmitting the downlink data to the base station through a tunnel identified by the data path tag.

According to another aspect of the present invention, there is provided a method for interworking a portable Internet network and a DSL network in a method of interworking a portable Internet network and a DSL network including a control station and a base station. Receiving uplink data through a tunnel identified by the data path tag from a base station receiving uplink data corresponding to a type of convergence sublayer used by the terminal from the terminal according to a connection identifier mapped to a tag; And when there is a service flow mapped to the data path tag when the convergence sublayer is IP-CS, the uplink data transmitted through the tunnel is transmitted to the DSL network to the access service network of the portable Internet network. Characterized in that it comprises the step of transmitting.

In accordance with an aspect of the present invention, an interworking device between a mobile Internet network and a DSL network receives a first downlink data from a DSL network, and a data path tag for mapping the second downlink data to a service flow. And transmits to a portable Internet network including a base station and a control station that transmit and receive data to each other according to the tunnel identified by the tunnel and the type of convergence sublayer used by the terminal, and receives first uplink data from the portable Internet network. A transmission / reception unit configured to transmit uplink data to the DSL network through an access point of the DSL network connected to the portable Internet network; And obtaining the second downlink data conforming to the type using the first downlink data and the protocol of the access point, and the second uplink data conforming to the protocol using the first uplink data. Characterized in that it comprises a data converter for obtaining a.

As described above, according to the present invention, data can be transmitted and received according to various locations of access points of a DSL network connected to a portable Internet network, various data transmission protocols at the access points, and various types of convergent sublayers used by the MS. It is effective to implement a method and apparatus for interworking a portable Internet network and a DSL network.

In addition, the present invention has the effect of enabling the processing of downlink data received from the DSL network or uplink data for transmission from the MS to the DSL network in a portable Internet network interworking with the DSL network.

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

1 is a portable Internet network, a DSL network, and a digital subscriber line (DSL) service providing a digital subscriber line (DSL) service according to the first, second, third, and fourth embodiments of the present invention. It is a figure which shows a companion device.

As shown, the portable Internet network 102 includes a connection service network 106, an access service network 108, a terminal 118 included in the mobile terminal 112, and a terminal device ( 116: a terminal 114 connected to the terminal equipment.

The access service network 106 (CSN) includes AAA (Authentication-Authorization-Accounting (not shown)) and PCRF (Policy and Charging Rules Function (not shown)), and the access service network 108 (ASN) and the terminals 114 and 118 For this purpose, the AAA performs user authentication, authorization, and account management functions, and PCRF creates rules related to the user's network service policy and billing. In addition, it may include a home agent (HA) (not shown) to support the mobility of the terminal.

The ASN 108 includes a control station ASN-GW (ASN Gateway: not shown) and a base station (Base Station: not shown), and the Layer-2 connection establishment function between the base station (BS) and the terminals 114 and 118 is provided. It provides a network discovery and a network selection function, a forwarding function for establishing a layer-3 connection of the terminals 114 and 118, and a radio resource management function.

The ASN 108 includes a terminal 114 using an Ethernet Convergence Sublayer (ETH-CS) or a terminal 118 using an Internet Protocol (IP) convergence sublayer (IP-CS) through a BS. Send and receive data.

As an example, the terminal 114 using the ETH-CS receives a predetermined predetermined uplink packet received from an upper layer in the ETH-CS of the terminal 114 to transmit the uplink data to the BS of the ASN 108. Classify according to criteria.

In this case, a criterion for classifying an uplink packet is based on information of an Ethernet frame included in the uplink packet. Each classified packet corresponds to an appropriate flow, a connection ID is added to the MAC layer, and the uplink data generated through the above process is physically transmitted to the BS corresponding to the connection identifier. Send through the layer.

The DSL network 104 includes an Application Service Provider (ASP) 120, a Network Service Provider (NSP) 122, a Broadband Remote Access Server (124), a DSL Access Multiplexer (DSLAM) 126, and a terminal device ( 132: modem 130 connected to the TE).

ASP 120 is a service provider associated with outsourcing information related systems and application sectors such as enterprises, and NSP 122 provides Internet access service providers with backbone services, services for all infrastructure required for Internet access. Provider.

The broadband remote access server 124 (BRAS) is a device that interconnects the Internet and the DSLAM 126 so that subscribers can access the Internet.

The DSLAM 126 is a multiplexing device for multiplexing and demultiplexing a plurality of DSL modems to access a network in order to efficiently provide a DSL service to a subscriber.

The interworking unit 134 is an apparatus for interworking the portable Internet network 102 and the DSL network 104. The interworking unit is a data transmission protocol of an access point of the DSL network 104 connected to the portable Internet network 102, and the MS. Data is transmitted and received according to the type of convergence sublayer used by (114, 118).

<< first embodiment >>

In the first embodiment of the present invention, when the portable Internet network 102 is connected to the connection point between the BRAS 124 and the ASP 120 of the DSL network 104 via the companion device 134, or the DSL network 104. Is connected to the connection point between the BRAS 124 and the NSP 122, and the MS 114 and the DSL network of the portable Internet network 102 are used when the CS used by the MS 114 is ETH-CS. 104) describes an interworking method and apparatus for transmitting and receiving data using PPP over Ethernet (PPPoE).

2 illustrates an ASP 120 of a portable Internet network 102 and a DSL network 104 for explaining a method and apparatus for interworking between the portable Internet network 102 and the DSL network 104 according to the first embodiment of the present invention. Or a protocol stack structure of the NSP 122 and the companion device 134.

A method and apparatus for interworking data will be described through a process of transmitting downlink data and a protocol stack structure from the ASP 120 or the NSP 122 of the DSL network 104 to the TE 116 of the portable Internet network.

Referring first to the protocol stack 202 of the ASP 120 or the NSP 122 of the DSL network 104, the PPP layer encapsulates the IP packet to generate a PPP packet, and L2TP (Layer 2 Tunneling Protocol) in the L2TP layer Encapsulates the PPP packet to tunnel, adds the corresponding IP header to pass from the IP layer to the companion device 134, and then downlink data through the link (LNK) layer and the physical (PHY) layer. Transfer to the companion device 134. In one embodiment, the protocol stack 202 may be a protocol stack of an L2TP Network Server (LNS) included in the NSP 122.

Hereinafter, the linkage process of downlink data will be described with reference to the protocol stack of FIG. 2 and the companion device 134 of the DSL network 104 and the portable Internet network 102 according to the first embodiment of the present invention.

The interworking device 134 of the portable Internet network 102 and the DSL network 104 according to the first embodiment of the present invention is a transceiver (not shown), an address storage unit (not shown), and a data conversion unit (not shown). ).

When the transceiver unit receives the downlink data from the DSL network 104, the transceiver transmits the downlink data that has undergone a specific conversion procedure to the portable Internet network 102 including the BS 111 and the control station ASN-GW 110. In this case, the BS 111 and the ASN-GW 110 exchange data with each other according to the type of the CS identified by the tunnel and the tunnel identified by the data path tag mapped to the Ethernet address of the UE. Send and receive.

When the transceiver unit receives the uplink data from the CSN 106, the transceiver 120 or the NSP 122 connects the converted uplink data to the portable Internet network 102 through the connection point of the DSL network 104. To send).

In the address storage unit, before the companion device 134 receives the downlink data from the DSL network 104, the Ethernet address of the TE 116 is transmitted from the portable Internet network 102 and stored in advance. In one embodiment, the Ethernet address of TE 116 may be the MAC address of an Ethernet card corresponding to MS 114.

The data converter acquires the downlink data received from the ASP 120 or the NSP 122 and the converted downlink data corresponding to the CS type using the protocol of the access point, and the uplink received from the CSN 106. The data is used to obtain transformed uplink data conforming to the protocol of the access point.

In one embodiment, the data conversion unit determines that the protocol of the access point is PPP if the PPP header is included in the data received from the ASP 120 or the uplink data received from the CSN 106, and the PPP header is If not included, it can be determined as an IP.

In the above-described embodiment, the transceiver, the address storage unit, and the data conversion unit are described as separate components, but in the modified embodiment, each of these components may be integrated into one.

Hereinafter, the process of converting downlink data of the companion device 134 through the protocol stack 204 of the companion device 134 of FIG. 2 will be described in detail. The data converter may include a protocol stack of an ASP 120 or an NSP 122. The PPP packet is extracted from the downlink data received by the transceiver through the reverse process of the process performed at 202.

According to an embodiment, when the PPP header is included in the downlink data received by the transceiver, the data converter may determine to use PPP and extract the PPP packet.

Subsequently, the PPPoE layer encapsulates the PPP packet into a PPPoE frame for use in a data field of an Ethernet frame. The Ethernet layer (ETH) generates an Ethernet frame including the PPPoE frame as a data field and including the Ethernet address of the TE 116 stored in the address storage. In this case, the PPP packet is mapped to the Ethernet address of the TE 116, and the mapping information is previously stored in the address storage unit before generation of the Ethernet frame.

Subsequently, downlink data converted through the physical (PHY) layer is transmitted to the CSN 106 through the transceiver.

Next, referring to the protocol stack 206 of the CSN 106 and the ASN-GW 110, the CSN 106 receives through the reverse process of the process performed in the protocol stack 204 of the companion device 134. An Ethernet frame is obtained from the converted downlink data. The Ethernet frame is transmitted to the ASN-GW 110 mapped to the Ethernet address of the TE 116. Here, the mapping information of the Ethernet address of the TE 116 and the ASN-GW 110 may be previously stored in the CSN 106. In addition, the transmission from the CSN 106 to the ASN-GW 110 may be an Ethernet transmission, an IP transmission, or a transmission through a General Routing Encapsulation (GRE) tunnel.

In the above-described embodiment, the companion device 134 is described as being separated from the CSN 106. However, in the modified embodiment, the companion device 134 may be included in the CSN 106 and implemented. In this case, the transceiver of the companion device 134 transmits the Ethernet frame including the PPPoE frame to the corresponding ASN-GW 110 through the Ethernet address of the TE 116 pre-stored in the address storage unit and the identification information of the ASN-GW 110. Can be sent to. The identification information of the ASN-GW 110 may be an Ethernet address, an IP address, or a GRE key of the ASN-GW 110.

The ASN-GW 110 obtains an Ethernet frame from data received from the CSN 106 and selects a data path tag and a BS 111 mapped to an Ethernet address of the terminal.

In the GRE layer, the data path tag is added to encapsulate an Ethernet frame. In an embodiment, the data path tag may be a GRE key which is a data path ID.

Subsequently, after adding the IP header corresponding to the selected BS 111 in the IP layer, the Ethernet frame encapsulated through the link (LNK) layer and the physical (PHY) layer is connected to the BS through the tunnel identified by the data path identifier. To 111.

Next, referring to the protocol stack 208 of the BS 111, the BS 111 converts the downlink data received through the reverse process of the process performed in the protocol stack 206 of the ASN-GW 110. Obtain an Ethernet frame from it. Then, in the Ethernet CS layer (ETH CS), a connection identifier (Connection ID) mapped to the data path tag is added to the Ethernet frame, and then the MS 114 corresponding to the connection identifier is passed through a lower layer of IEEE 802.16. send.

Next, referring to the protocol stack 210 of the MS 114, the MS 114 receives data from the BS 111 through a reverse process of the process performed in the protocol stack 208 of the BS 111. After acquiring the Ethernet frame, the Ethernet frame is transmitted to the TE 116 through the physical (PHY) layer.

Next, referring to the protocol stack 210 of the TE 116, an Ethernet frame is obtained from the data received from the MS 114, and sequentially passed through the PPPoE layer, the PPP layer, and the IP layer. Acquire.

Visitor AAA (136: AAA_v) may be included in the CSN 106, the authority, authentication, or account setup process for data transmission and reception between the home AAA (138: AAA_h) of the DSL network 104 and TE (116) It acts as a proxy to mediate.

In the above-described embodiment, the data interworking method has been described through the process of transmitting downlink data from the ASP 120 or the NSP 122 to the TE 116 and a protocol stack structure. This can be explained by the inverse of the method.

3 and 4 are flowcharts illustrating a method of interworking a portable Internet network and a DSL network according to a first embodiment of the present invention.

3 is a flowchart illustrating a method of transmitting and receiving downlink data using Ethernet CS and PPPoE in a portable Internet network interworking with a DSL network according to a first embodiment of the present invention.

First, in a companion device between a portable Internet network and a DSL network, a PPP packet using L2TP is received from an ASP or an NSP of a DSL network (S402a). In one embodiment, the companion device may receive a PPP packet from the LNS included in the NSP.

Next, the Ethernet address of the TE corresponding to the PPP packet is obtained (S404a). Here, the address of the TE is information previously stored in the companion device. When the companion device receives downlink data from the DSL network, the companion device may determine whether to use the PPP by considering the inclusion of the PPP header.

Next, the Ethernet frame and the PPPoE frame to which the Ethernet header corresponding to the TE Ethernet address is added are transmitted to the CSN (S406a).

Next, the CSN determines the Ethernet address of the TE through the received Ethernet frame, finds the corresponding ASN-GW through the mapping information of the Ethernet address of the TE and the ASN-GW, and then stores the corresponding ASN-GW. In step S408a.

Next, the ASN-GW determines the data path tag and the base station mapped to the Ethernet address of the terminal (S410a). In addition, a data path tag is added to the Ethernet frame and transmitted to a base station through a tunnel identified by the data path tag through an encapsulation process using an IP / GRE / ETH protocol stack (S412a). In one embodiment, the data path tag may be a GRE key which is a data path identifier.

Next, the base station performs a decapsulation process on the received Ethernet frame, obtains a connection identifier mapped to the data path tag (S414a), and receives the Ethernet received from the ASN-GW by the MS corresponding to the connection identifier. The frame is transmitted (S416a).

Next, the MS transmits the received Ethernet frame to the TE (S418a), and the TE finally obtains the desired data from the received Ethernet frame (S420a).

4 is a flowchart illustrating a method of transmitting and receiving uplink data using Ethernet CS and PPPoE in a portable Internet network interworking with a DSL network according to a first embodiment of the present invention.

First, when the TE transmits an uplink Ethernet frame using PPPoE to the MS (S402b), the MS selects the connection identifier (S404b), and transmits the received Ethernet frame to the BS corresponding to the connection identifier (S406b).

Next, upon receiving the Ethernet frame from the MS, the BS selects the corresponding data path tag and ASN-GW through the connection identifier (S408b), adds the data path tag to the received Ethernet frame, and ETH / GRE / IP. An encapsulation process using a protocol stack is performed and transmitted to the ASN-GW through the tunnel identified by the data path tag (S410b).

Next, the ASN-GW performs a decapsulation process on the received Ethernet frame and transmits the received Ethernet frame to the corresponding CSN (S412b). The CSN transmits the received Ethernet frame to the companion device (S414b).

Next, the companion device determines whether the received Ethernet frame includes the PPP header (S416b). If the PPP header is included, the companion device determines that the PPP is used at the access point of the DSL network connected to the mobile Internet. The PPP packet extracted from the Ethernet frame is transmitted to the ASP or the NSP 122 using L2TP (S418b). The case where the Ethernet frame does not include the PPP header, that is, the case of using IPoE will be described through the second embodiment.

<< 2nd Example >>

In the second embodiment of the present invention, the portable Internet network 102 is connected to the connection point between the BRAS 124 and the ASP 120 of the DSL network 104 via the companion device 134, or the DSL network 104. Is connected to the connection point between the BRAS 124 and the NSP 122, and the MS 114 and the DSL network of the portable Internet network 102 are used when the CS used by the MS 114 is ETH-CS. 104) describes an interworking method and apparatus for transmitting and receiving data using IPoE (IP over Ethernet).

5 is a portable Internet network 102, an ASP 120 or an NSP 122 for explaining a method and apparatus for interworking between the portable Internet network 102 and the DSL network 104 according to the second embodiment of the present invention; And a protocol stack structure of the companion device 134.

A method and apparatus for interworking data through the process of transmitting downlink data and the protocol stack structure from the ASP 120 or the NSP 122 to the TE 116 will be described. In addition, duplicate descriptions of parts that can be understood through the above-described first embodiment will be omitted.

First, referring to the protocol stack 502 of the NSP 122 or the ASP 120, the downlink data added with the IP header corresponding to the TE 116 in the IP layer is transmitted to the companion device 134.

Hereinafter, a linkage process of downlink data will be described with reference to the protocol stack of FIG. 5 and the companion device 134 of the DSL network 104 and the portable Internet network 102 according to the second embodiment of the present invention.

The interworking device 134 of the portable Internet network 102 and the DSL network 104 according to the second embodiment of the present invention includes a transceiver (not shown), an address storage unit (not shown), and a data conversion unit (not shown). ).

When the transceiver unit receives the downlink data from the DSL network 104, the transceiver unit transmits the converted downlink data to the portable Internet network 102 including the BS 111 and the control station ASN-GW 110. Here, the BS 111 and the ASN-GW 110 transmit and receive data with each other according to the type of the tunnel identified by the data path tag mapped to the Ethernet address of the terminal and the CS used by the MS 114.

When the transceiver unit receives the uplink data from the CSN 106, the transceiver transmits the converted uplink data to the ASP 120 through an access point of the DSL network 104 connected to the portable Internet network 102. .

In the address storage unit, before the companion device 134 receives the downlink data from the DSL network 104, the Ethernet address of the TE 116 is transmitted from the portable Internet network 102 and stored in advance. In one embodiment, the Ethernet address of TE 116 may be the MAC address of an Ethernet card corresponding to MS 114.

The data converter acquires the downlink data received from the ASP 120 or the NSP 122 and the converted downlink data corresponding to the CS type using the protocol of the access point, and the uplink received from the CSN 106. The data is used to obtain transformed uplink data conforming to the protocol of the access point.

In one embodiment, the data converter determines that the protocol of the access point is PPP when the PPP header is included in the data received from the ASP 120 or the uplink data received from the CSN 106, and the PPP header. If not included, it can be determined as an IP.

Hereinafter, the process of converting downlink data of the companion device 134 through the protocol stack 504 of the companion device 134 of FIG. 5 will be described in detail. The data converter may include a protocol stack of the ASP 120 or the NSP 122. The IP packet is extracted from the downlink data received by the transceiver through the reverse process of the process performed at 502.

In one embodiment, the data conversion unit determines that the PPP header is used when the downlink data received by the transceiver unit includes the PPP, determines that the IP is used when the PPP header is not included, and determines the IP packet. Can be extracted.

The Ethernet layer generates an Ethernet frame including the extracted IP packet and the Ethernet address of the TE 116 stored in the address storage unit. Here, the IP packet is mapped to the Ethernet address of the TE 116, and the mapping information is previously stored in the address storage unit before generation of the Ethernet frame.

The downlink data converted into the Ethernet frame is transmitted to the CSN 106 through the transceiver. Then, it is sequentially transmitted to the TE 116 through the protocol stack structures 506, 508, and 510 of the CSN 106, the ASN-GW 110, the BS 111, and the MS 114.

In the above-described second embodiment, the companion device 134 is described as being separated from the CSN 106. However, in the modified embodiment, the companion device 134 may be implemented by being included in the CSN 106. In this case, the transceiver unit 134 may transmit the Ethernet frame to the corresponding ASN-GW 110 through the Ethernet address of the TE 116 pre-stored in the address storage unit and the identification information of the ASN-GW 110. have. The identification information of the ASN-GW 110 may be an Ethernet address, an IP address, or a GRE key of the ASN-GW 110.

Next, referring to the protocol stack 512 of the TE 116, an Ethernet frame is obtained from the data received from the MS 114, and the target data is obtained by decapsulating the IP packet in the IP layer.

In the above-described embodiment, the data interworking method has been described through the process of transmitting downlink data from the ASP 120 or the NSP 122 to the TE 116 and the protocol stack structure, and the interworking method for the uplink data is described above. This can be explained by the inverse of the method.

6 and 7 are flowcharts illustrating a method of interworking a portable Internet network and a DSL network according to a second embodiment of the present invention.

6 is a flowchart illustrating a method of transmitting and receiving downlink data using Ethernet CS and IP in a portable Internet network interworking with a DSL network according to a second embodiment of the present invention.

First, an IP packet is received from an ASP or an NSP of a DSL network in a companion device between a portable Internet network and a DSL network (S702a). An Ethernet address of the TE corresponding to the received IP packet is obtained (S704a). Here, the address of the TE is information previously stored in the companion device. When the companion device receives downlink data from the DSL network, the companion device may determine whether to use the PPP by considering the inclusion of the PPP header.

Next, the Ethernet frame including the Ethernet header and the IP packet corresponding to the Ethernet address of the TE is transmitted to the CSN (S706a).

Next, the CSN determines the Ethernet address of the TE through the received Ethernet frame, finds the corresponding ASN-GW through the mapping information of the Ethernet address of the TE and the ASN-GW, and then stores the corresponding ASN-GW. In step S708a.

Next, the ASN-GW determines the data path tag and the base station mapped to the Ethernet address of the terminal (S710a). In addition, a data path tag is added to the Ethernet frame and transmitted to a base station through a tunnel identified by the data path tag through an encapsulation process using an IP / GRE / ETH protocol stack (S712a). In one embodiment, the data path tag may be a GRE key which is a data path identifier of service flow information.

Next, the base station performs a decapsulation process on the received Ethernet frame, obtains a connection identifier mapped to the data path tag (S714a), and receives the Ethernet received from the ASN-GW by the MS corresponding to the connection identifier. The frame is transmitted (S716a).

Next, the MS transmits the received Ethernet frame to the TE (S718a), and the TE finally obtains the desired data from the received Ethernet frame (S720a).

7 is a flowchart illustrating a method for transmitting and receiving uplink data using Ethernet CS and IP in a portable Internet network interworking with a DSL network according to a second embodiment of the present invention.

First, when the TE transmits an uplink Ethernet frame including an IP packet to the MS (S702b), the MS selects a connection identifier (S704b), and transmits the received Ethernet frame to a BS corresponding to the connection identifier (S706b). .

Next, upon receiving the Ethernet frame from the MS, the BS selects the corresponding data path tag and ASN-GW through the connection identifier (S708b), adds the data path tag to the received Ethernet frame, and ETH / GRE / IP. The encapsulation process using the protocol stack is performed and transmitted to the ASN-GW through the tunnel identified by the data path tag (S710b).

Next, the ASN-GW performs the decapsulation process on the received Ethernet frame and transmits the received Ethernet frame to the corresponding CSN (S712b). The CSN transmits the received Ethernet frame to the companion device (S714b).

Next, the companion device determines whether the received Ethernet frame includes the PPP header (S716b). If the PPP header is not included, the companion device determines that the IP is used at an access point of the DSL network connected to the portable Internet. The IP packet extracted from the Ethernet frame is transmitted to the ASP or the NSP (S718b). The case where the Ethernet frame includes the PPP header, that is, the case of using PPPoE may be described through the first embodiment.

<< third embodiment >>

In the third embodiment of the present invention, the portable Internet network 102 is connected to the connection point between the BRAS 124 and the ASP 120 of the DSL network 104 via the companion device 134, or the DSL network 104. Is connected to the connection point between the BRAS 124 and the NSP 122, and the MS 118 and the DSL network of the portable Internet network 102 are used when the CS used by the MS 118 is IP-CS. 104) describes an interworking method and apparatus for transmitting and receiving data using the IP.

8 illustrates a portable Internet network 102, an ASP 120 or an NSP 122 for explaining a method and apparatus for interworking between the portable Internet network 102 and the DSL network 104 according to the third embodiment of the present invention. And a protocol stack structure of the companion device 134.

A method and apparatus for interworking data through the process of transmitting downlink data and the protocol stack structure from the ASP 120 to the MS 118 will be described. In addition, duplicate descriptions of parts that can be understood through the above-described first embodiment will be omitted.

First, referring to the protocol stack 802 of the ASP 120, the IP layer transfers downlink data including an IP header corresponding to the MS 118 to the companion device 134.

Hereinafter, an interworking process of downlink data will be described with reference to the protocol stack of FIG. 8 and the companion device 134 of the DSL network 104 and the portable Internet network 102 according to the third embodiment of the present invention.

When the companion device 134 receives the downlink data from the DSL network 104, the companion device 134 transmits the received downlink data to the portable Internet network 102 including the BS 111 and the control station ASN-GW 110. . Here, the BS 111 and the ASN-GW 110 transmit and receive data to and from each other according to the tunnel identified by the data path tag mapped to the service flow and the type of CS used by the MS 118.

When the companion device 134 receives the uplink data from the CSN 106, the ASP 120 transmits the received uplink data to the portable Internet network 102 through an access point of the DSL network 104. Or forward to NSP 122.

Hereinafter, the downlink data transmission process will be described in detail with reference to FIG. 8. In the companion device 134, the downlink data received from the ASP 120 or the NSP 122 is an IP packet, and the MS 118 is IP- When using the CS, the downlink data is transmitted to the CSN 106 through the companion device 134.

Next, referring to the protocol stack 806 of the CSN 106 and the ASN-GW 110, the CSN 106 is an inverse of the process performed in the protocol stack 802 of the ASP 120 or the NSP 122. The IP packet is obtained from the converted downlink data received through the process. The IP packet is transmitted to the ASN-GW 110 mapped to the IP packet. Here, the mapping information of the IP packet and the ASN-GW 110 may be previously stored in the CSN 106. In addition, the transmission from CSN 106 to ASN-GW 110 may be an Ethernet transmission, an IP transmission, or a transmission over a GRE tunnel.

In the above-described embodiment, the companion device 134 is described as being separated from the CSN 106. However, in the modified embodiment, the companion device 134 may be included in the CSN 106 and implemented. In this case, the companion device 134 pre-stores mapping information of the IP address of the MS 118 and the identification information of the ASN-GW 110. When the IP packet is transmitted, the companion device 134 refers to the mapping information. May be forwarded to 110. The identification information of the ASN-GW 110 may be an Ethernet address, an IP address, or a GRE key of the ASN-GW 110.

The ASN-GW 110 selects a data path tag and a BS 111 mapped to the service flow of the IP packet received from the CSN 106. In addition, the data path tag is added by the GRE layer to encapsulate the received IP packet. In one embodiment, the data path tag may be a GRE key which is a data path identifier included in service flow information.

Subsequently, after adding the IP header corresponding to the selected BS 111 in the IP layer, the IP packet encapsulated through the link (LNK) layer and the physical (PHY) layer is connected to the BS through the tunnel identified by the data path identifier. To 111.

Next, referring to the protocol stack 808 of the BS 111, the BS 111 receives an IP from downlink data received through the reverse process of the process performed in the protocol stack 206 of the ASN-GW 110. Acquire a packet. In the IP CS layer, a connection identifier mapped to the data path tag is added to the IP packet, and then transmitted to the MS 118 corresponding to the connection identifier through a lower layer of IEEE 802.16.

Next, referring to the protocol stack 810 of the MS 118, the target data is obtained through the process of decapsulating the IP packet in the IP layer.

In the above-described embodiment, the data interworking method has been described through the process of transmitting downlink data from the ASP 120 or the NSP 122 to the MS 118 and a protocol stack structure. This can be explained by the inverse of the method.

9 and 10 are flowcharts illustrating a method of interworking a portable Internet network and a DSL network according to a third embodiment of the present invention.

9 is a flowchart illustrating a method for transmitting and receiving downlink data using IP-CS and IP in a portable Internet network interworking with a DSL network according to a third embodiment of the present invention.

First, in an interworking device between a portable Internet network and a DSL network, an IP packet is received from an ASP or an NSP of a DSL network (S1002a). The received IP packet is transferred to the CSN (S1004a).

Next, the CSN identifies the MS's IP address through the received IP packet, finds the corresponding ASN-GW through the mapping information of the pre-stored IP address of the MS and the ASN-GW, and then finds the corresponding ASN-GW. To transmit (S1006a).

Next, the ASN-GW selects the data path tag and the base station corresponding to the service flow of the received IP packet (S1008a). The data path tag is added to the IP packet and transmitted to the base station through a tunnel identified by the data path tag through a GRE process (S1010a). In one embodiment, the data path tag may be a GRE key which is a data path identifier of service flow information.

Next, the base station performs a GRE decapsulation process of the received IP packet, obtains a connection identifier mapped to the data path tag (S1012a), and receives an MS corresponding to the connection identifier from the ASN-GW. The IP packet is transmitted (S1014a).

Next, the MS finally acquires the desired data from the received IP packet (S1016a).

10 is a flowchart illustrating a method of transmitting and receiving uplink data using IP-CS and IP in a portable Internet network interworking with a DSL network according to a third embodiment of the present invention.

First, the MS selects a connection identifier (S1002b), and transmits an IP packet to a BS corresponding to the connection identifier based on the IP-CS (S1004b).

Next, upon receiving the IP packet from the MS, the BS selects the corresponding data path tag and ASN-GW through the connection identifier (S1006b), adds the data path tag to the received IP packet, and performs a GRE process. In operation S1008b, the ASN-GW transmits to the ASN-GW through the tunnel identified by the data path tag.

Next, the ASN-GW performs the decapsulation process for the received IP packet and transmits it to the corresponding CSN (S1010b). The CSN sequentially transmits the received Ethernet frame to the companion device (S1012), and the companion device transmits the received IP packet to the ASP or the NSP (S1014b).

<< fourth embodiment >>

In the fourth embodiment of the present invention, the portable Internet network 102 may be applied when the mobile internet protocol (MIP) is supported. As described above, the portable internet network 102 may be connected to the DSL network through the companion device 134. Connected to the connection point of the BRAS 124 and the ASP 120 / NSP 122 of 104, and the CS used by the MS 114 is ETH-CS or IP-CS. The MS 114 and the DSL network 104 transmit and receive data using IPoE.

Hereinafter, a method and apparatus for interworking data according to a fourth exemplary embodiment of the present invention will be described with reference to FIG. 11, and a redundant description of parts that can be understood through the aforementioned first exemplary embodiment will be omitted.

Referring first to the protocol stacks 901a and 901b of the ASP 120 or the NSP 122 of the DSL network 104 shown in FIG. 11, tunneling IP packets using the Layer 2 Tunneling Protocol (L2TP) at the L2TP layer. It encapsulates the data, and delivers downlink data added with an IP header to the companion device 134 in the IP layer.

Next, referring to the protocol stack 903a of the interworking device 134 and the HA 146, the interworking device 134 is performed in the protocol stacks 901a and 901b of the ASP 120 or the NSP 122. The IP packet obtained through the reverse process of the UE is transferred to the HA (Home Agent) 146 of the CSN 106.

Next, the HA 146 encapsulates the received IP packet into an IP packet in the form of IPinIP to transmit the IP packet to the ASN-GW 110 at the IP layer. The Ethernet layer (ETH) generates an Ethernet frame including the encapsulated IP packet of the IPinIP type and including the Ethernet address of the TE 116. Here, the IP packet is mapped to the Ethernet address of the TE 116, and the mapping information is stored in advance before generation of the Ethernet frame. Subsequently, downlink data converted through the physical (PHY) layer is transmitted to the ASN-GW 110.

In this case, the HA 146 may transmit the Ethernet frame including the IP packet of the IPinIP type to the corresponding ASN-GW 110 through the pre-stored Ethernet address of the TE 116 and identification information of the ASN-GW 110. have. The identification information of the ASN-GW 110 may be an Ethernet address, an IP address, or a GRE key of the ASN-GW 110.

In the above-described embodiment, the companion device 134 is described as being separated from the CSN 106. However, in the modified embodiment, the companion device 134 may be included in the CSN 106 and implemented.

Next, referring to the protocol stacks 905a and 905b of the ASN-GW 110, the ASN-GW 110 performs the reverse process of the process performed in the protocol stacks 903a and 903b of the companion device 134. Obtain an IP packet from the received downlink data.

The ASN-GW 110 obtains an IP packet from the data received from the CSN 106 and determines the BS 111 and the data path tag mapped to the Ethernet address of the terminal when the convergence sublayer of the terminal is Ethernet-CS. If the convergence sublayer of the terminal is IP-CS, the data path and the BS 111 mapped to the service flow are determined. Here, when the convergence sublayer of the terminal is ETH-CS (905b), the Ethernet header may be added to the IP packet and encapsulated.

In the GRE layer, the data path tag is added to encapsulate an IP packet. In an embodiment, the data path tag may be a GRE key which is a data path ID.

Subsequently, after adding an IP header corresponding to the selected BS 111 in the IP layer, the Ethernet frame encapsulated through the Ethernet (ETH) layer and the physical (PHY) layer is connected to the BS through the tunnel identified by the data path identifier. To 111.

Next, referring to the protocol stacks 907a and 907b of the BS 111, the BS 111 converts received through a reverse process of the process performed in the protocol stacks 905a and 905b of the ASN-GW 110. An IP packet from the downlink data.

If the CS used by the UE is IP-CS, in the IP CS layer, after the connection identifier mapped to the data path tag is added to the IP packet, the MS corresponding to the connection identifier is passed through the lower layer of IEEE 802.16. 114) If the CS used by the UE is ETH-CS, the ETH CS layer adds a connection identifier mapped to the data path tag to the IP packet, and then corresponds to the connection identifier through a lower layer of IEEE 802.16. To the MS 114.

Next, referring to the protocol stacks 909a and 909b of the MS 114, the MS 114 receives a message from the BS 111 through a reverse process of the process performed in the protocol stacks 907a and 907b of the BS 111. The Ethernet frame is obtained from the received data and transmitted to the TE 116 through the physical (PHY) layer.

Next, referring to the protocol stacks 911a and 911b of the TE 116, an Ethernet frame is obtained from data received from the MS 114, and the target data is obtained by decapsulating the IP packet at the IP layer. do.

Visitor AAA (150: AAA_v) may be included in the CSN 106, the authority, authentication, or account setup process for data transmission and reception between the home AAA (152: AAA_h) and the TE (116) of the DSL network 104 It acts as a proxy to mediate.

In the above-described embodiment, the data interworking method has been described through the process of transmitting downlink data from the ASP 120 or the NSP 122 to the TE 116 and the protocol stack structure, and the interworking method for the uplink data is described above. This can be explained by the inverse of the method.

<< Fifth Embodiment >>

12 illustrates a portable Internet network, a DSL network, and a companion device for providing a DSL service according to a fifth embodiment of the present invention.

As shown, the portable Internet network 1102 is connected to the access service network 1106 (CSN), the access service network 1108 (ASN), the terminal 1118 included in the home gateway 1112, and the terminal device 1116. It includes a connected terminal 1114.

The DSL network 1104 includes an ASP 1120, an NSP 1122, a broadband remote access server 1124, a DSLAM 1126, and a modem 1130 connected to the terminal device 1132.

In the fifth embodiment of the present invention, the portable Internet network 1102 is connected to the connection point between the BRAS 1124 and the DSLAM 1126 of the DSL network 1104 via the companion device 1134, and the MS 1114. The following describes an interworking method and apparatus for the TE 1116 and the DSL network 1104 of the portable Internet network 1102 to transmit and receive data using PPPoE or IPoE when the CS used by the ETH-CS.

FIG. 13 illustrates a portable Internet network 1102, a BRAS 1124, and an interworking device 1134 for explaining a method and apparatus for interworking a portable Internet network 1102 and a DSL network 1104 according to a fifth embodiment of the present invention. ) Is the protocol stack structure.

Hereinafter, a method and apparatus for interworking data through a process of transmitting downlink data using PPPoE and a protocol stack structure from the BRAS 1124 to the TE 1116 will be described.

Referring first to the protocol stack 1146a of the BRAS 1124, the PPP layer encapsulates an IP packet to generate a PPP packet, and the PPPoE layer encapsulates the PPP packet into a PPPoE frame for use in a data field of an Ethernet frame. .

The Ethernet layer (ETH) generates an Ethernet frame including a PPPoE frame as a data field and including an Ethernet address of the MS 1114. Subsequently, the Ethernet frame is extended to a VLAN frame according to IEEE 802.1ad in the VLAN layer, and then transmitted to the companion device 1134 through the physical (PHY) layer.

Hereinafter, an interworking process of downlink data will be described with reference to the protocol stack of FIG. 13 and the companion device 1134 of the portable Internet network 1102 and the DSL network 1104 according to the fifth embodiment of the present invention.

Hereinafter, an example in which the interworking device 1134 of the portable Internet network 1102 and the DSL network 1104 according to the fifth embodiment of the present invention is included in the CSN 1106 will be described.

The companion device 1134 transfers the downlink data received from the DSL network 1104 to the portable Internet network 1102 including the BS 1111 and ASN-GW 1110 as a control station. Here, the BS 1111 and the ASN-GW 1110 transmit and receive data with each other according to the tunnel identified by the data path tag mapped to the Ethernet address of the terminal and the type of CS used by the MS 1114.

The companion device 1134 transmits uplink data received from the CSN 1106 to the BRAS 1124 through an access point of the DSL network 1104 connected with the portable Internet network 1102.

Hereinafter, the downlink data transmission process will be described in detail through the interworking device 1134, the CSN 1106, and the protocol stack 1148a of the ASN-GW 1110 of FIG. 13, and the CSN 1106 is a BRAS 1124. The Ethernet frame received by the transceiver unit 1136 is obtained through the reverse process of the process performed by the protocol stack 1146a of FIG.

The Ethernet frame is transmitted to the ASN-GW 1110 mapped to the Ethernet address of the MS 1114. In addition, the transmission from the companion device 1134 to the ASN-GW 1110 may be an Ethernet transmission, an IP transmission, or a transmission through a GRE tunnel.

In the above-described embodiment, the companion device 1134 is described as being included in the CSN 1106. However, in the modified embodiment, the companion device 1134 may be separated from the CSN 1106.

The ASN-GW 1110 obtains the received Ethernet frame and selects a data path tag and BS 1111 mapped to the Ethernet address of the terminal.

In the GRE layer, the data path tag is added to encapsulate an Ethernet frame. In one embodiment, the data path tag may be a GRE key which is a data path identifier.

Subsequently, after adding an IP header corresponding to the selected BS 1111 at the IP layer, the Ethernet frame encapsulated through the link (LNK) layer and the physical (PHY) layer is connected to the BS through the tunnel identified by the data path identifier. Forward to (1111).

Hereinafter, the processes transmitted through the BS 1111, the UE 1114, and the protocol stacks 1150a, 1152a, and 1154a of the TE 1116 are the same as described in the first embodiment, and thus will be omitted.

Hereinafter, a method and apparatus for interworking data through a process of transmitting downlink data using IPoE and a protocol stack structure from the BRAS 1124 to the TE 1116 will be described.

Referring to the protocol stack 1146b of the BRAS 1124, the IP packet generated at the IP layer is extended from the Ethernet layer to the Ethernet frame without passing through the PPP layer. Accordingly, the stack structure 1148b including the companion device 1134 and the ASN-GW 1110 included in the CSN 1106 and the stack structure 1154b of the terminal 1114 process Ethernet frames not including PPPoE. Done.

Therefore, in case of using IPoE, the Ethernet frame transmitted by the BRAS 1124 to the companion device 1134 is PPPoE compared to the downlink data transmission process and protocol stack structure using PPPoE in the above-described fifth embodiment. There is a difference in that it does not include a frame, and the transmission process in the stack structure 1152b and other overlapping portions of the BS 1111 will be omitted.

14 and 15 are flowcharts illustrating a method of interworking a portable Internet network and a DSL network according to a fifth embodiment of the present invention.

14 is a flowchart illustrating a method for transmitting and receiving downlink data using Ethernet CS and PPPoE or Ethernet CS and IPoE in a portable Internet network interworking with a DSL network according to a fifth embodiment of the present invention.

First, in an interworking device between a mobile Internet network and a DSL network, an Ethernet frame using IPoE or PPPoE and extended to a VLAN frame is received from the BRAS of the DSL network (S1402a). Here, the companion device is included in the CSN of the portable internet network.

Next, the Ethernet frame of the TE is identified through the received Ethernet frame, and the corresponding ASN-GW is found through mapping information of the prestored TE Ethernet address and the address of the ASN-GW, and then transmitted to the corresponding ASN-GW. (S1404a).

Next, in the ASN-GW, it determines the data path tag and the base station mapped to the Ethernet address of the terminal (S1406a). In addition, a data path tag is added to the Ethernet frame and transmitted to a base station through a tunnel identified by the data path tag through an encapsulation process using an IP / GRE / ETH protocol stack (S1408a). In one embodiment, the data path tag may be a GRE key which is a data path identifier.

Next, the base station performs an encapsulation process on the received Ethernet frame, obtains a connection identifier mapped to the data path tag (S1410a), and receives the Ethernet received from the ASN-GW by the MS corresponding to the connection identifier. The frame is transmitted (S1412a).

Next, the MS transmits the Ethernet frame received through the ETH-CS to the TE (S1414a), and the TE finally obtains the desired data from the received Ethernet frame (S1416a).

15 is a flowchart illustrating a method of transmitting and receiving uplink data using Ethernet CS and PPPoE or Ethernet CS and IPoE in a portable Internet network interworking with a DSL network according to a fifth embodiment of the present invention.

First, when the TE transmits an uplink Ethernet frame using PPPoE or IPoE to the MS (S1402b), the MS selects a connection identifier (S1404b), and the BS corresponding to the connection identifier based on the ETH-CS receives the received Ethernet frame. In step S1406b.

Next, when receiving the Ethernet frame from the MS, the BS selects the corresponding data path tag and ASN-GW through the connection identifier (S1408b), adds the data path tag to the received Ethernet frame, and ETH / GRE / IP. The encapsulation process using the protocol stack is performed and transmitted to the ASN-GW through the tunnel identified by the data path tag (S1410b).

Next, the ASN-GW performs a decapsulation process on the received Ethernet frame, extends the received Ethernet frame into a VLAN frame, and transmits the received Ethernet frame to the companion device (S1412b). Here, the companion device is included in the CSN of the portable internet network.

Next, the companion device transmits the Ethernet frame extended to the VLAN frame to the BRAS (S1414b).

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing the technical spirit or essential features.

Therefore, it is to be understood that the embodiments described above are exemplary in all respects and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts are included in the scope of the present invention. Should be.

1 is a diagram illustrating a portable Internet network, a DSL network, and a companion device for providing a DSL service according to a first embodiment, a second embodiment, a third embodiment, and a fourth embodiment of the present invention.

2 is a protocol stack structure of a portable Internet network, an ASP, and a companion device for explaining a method and apparatus for interworking a portable Internet network and a DSL network according to a first embodiment of the present invention.

3 and 4 are flowcharts illustrating a method of interworking a portable Internet network and a DSL network according to a first embodiment of the present invention.

5 is a protocol stack structure of a portable Internet network, an ASP, and a companion device for explaining a method and apparatus for interworking a portable Internet network and a DSL network according to a second embodiment of the present invention.

6 and 7 are flowcharts illustrating a method of interworking a portable Internet network and a DSL network according to a second embodiment of the present invention.

8 is a protocol stack structure of a portable Internet network, an ASP, and a companion device for explaining a method and apparatus for interworking a portable Internet network and a DSL network according to a third embodiment of the present invention.

9 and 10 are flowcharts illustrating a method of interworking a portable Internet network and a DSL network according to a third embodiment of the present invention.

11 is a protocol stack structure of a portable Internet network, an ASP, and a companion device for explaining a method and apparatus for interworking a portable Internet network and a DSL network according to a fourth embodiment of the present invention.

12 illustrates a portable Internet network, a DSL network, and a companion device for providing a DSL service according to a fifth embodiment of the present invention.

13 is a diagram illustrating a protocol stack structure of a portable Internet network, an ASP, and a companion device for explaining a method and a device for interworking a portable Internet network and a DSL network according to a fifth embodiment of the present invention.

14 and 15 are flowcharts illustrating a method of interworking a portable Internet network and a DSL network according to a fifth embodiment of the present invention.

Claims (27)

Receiving the first downlink data from the DSL network, the first downlink data corresponds to the type of convergence sublayer (CS) of the portable Internet network using the protocol of the first downlink data and the first downlink data. Acquiring second downlink data; And When the convergence sublayer is IP-CS, the second downlink data uses a tunnel identified as a data path tag mapped to a service flow. The convergence sublayer is Ethernet-CS. Transmitting to a portable Internet network including a base station and a control station transmitting or receiving using a tunnel identified by a data path tag mapped to an Ethernet address of a terminal; Method of interworking with a portable Internet network and a DSL network comprising a. The method of claim 1, The method may further include storing an Ethernet address of the terminal. If the convergence sublayer is Ethernet-CS, the protocol is Point-to-Point Protocol (PPP), and the second downlink data includes the Ethernet address and the PPP packet corresponding to the first downlink data is PPPoE ( A method of interworking with a portable Internet network and a DSL network, characterized in that the Ethernet frame including through (PPP over Ethernet). The method of claim 2, And a layer 2 tunneling protocol (L2TP) path, and the PPP packet is transmitted through the set L2TP path. The method of claim 1, The method may further include storing an Ethernet address of the terminal. If the convergence sublayer is Ethernet-CS, the protocol is IP (Internet Protocol), and the second downlink data is an Ethernet frame including an IP packet corresponding to the Ethernet address and the first downlink data. Interworking method between a mobile Internet network and a DSL network. The method of claim 1, If the convergence sublayer is IP-CS, the protocol is IP, and the second downlink data is an IP packet corresponding to the first downlink data. The method of claim 1, If the convergence sublayer is Ethernet-CS, the protocol is Ethernet, and the second downlink data is an Ethernet frame corresponding to the first downlink data. The method of claim 6, The Ethernet frame is a method of interworking with a mobile Internet network and a DSL network, characterized in that transmitted via a VLAN (Virtual Local Area Network). The method of claim 1, If the PPP header is included in the first downlink data, the protocol of the first downlink data is determined as PPP, and if the PPP header is not included, the protocol of the first downlink data is determined as IP. Interworking method of mobile Internet network and DSL network. The method of claim 1, The first downlink data is received from a DSL application service provider, a DSL network service provider, or a broadband remote access server of the DSL network. Interworking method between a mobile Internet network and a DSL network. The method of claim 1, And the second downlink data is transmitted to a connectivity service network or a control station of the portable internet network. The method of claim 1, The control station performs a proxy AAA function for AAA and Authentication-Authorization-Accounting (AAA) services of the DSL network when the terminal needs an authentication charging service. Way. If the convergence sublayer is IP-CS, the tunnel identified by the data path tag mapped to the service flow is used, and when the convergence sublayer is Ethernet-CS, it is mapped to the Ethernet address of the terminal. Receiving first uplink data from a portable Internet network including a base station and a control station transmitting or receiving using a tunnel identified by a data path tag to be transmitted;  Obtaining second uplink data conforming to a protocol of an access point of a DSL network connected to the portable Internet network using the first uplink data; And Transmitting the second uplink data through the access point to the DSL network; Method of interworking with a portable Internet network and a DSL network comprising a. The method of claim 12, When the convergence sublayer is Ethernet-CS, the protocol is PPP, and the second uplink data is a PPP packet extracted from PPPoE of the first uplink data. Way. The method of claim 13, A method of interworking with a portable Internet network and a DSL network, wherein a Layer 2 Tunneling Protocol (L2TP) path is set, and the PPP packet is transmitted through the set L2TP path. The method of claim 12, When the convergence sublayer is Ethernet-CS, the protocol is IP, and the second uplink data is an IP packet extracted from an Ethernet frame corresponding to the first uplink data. How to work with the network. The method of claim 12, If the convergence sublayer is IP-CS, the protocol is IP, and the second uplink data is an IP packet corresponding to the first uplink data. The method of claim 12, And the protocol is Ethernet and the second uplink data is an Ethernet frame corresponding to the first uplink data when the convergence sublayer is Ethernet-CS. The method of claim 17, The Ethernet frame is a method of interworking with a mobile Internet network and a DSL network, characterized in that transmitted via a VLAN (Virtual Local Area Network). The method of claim 12, When the PPP header is included in the first uplink data, the protocol of the access point is determined as PPP, and when the PPP header is not included, the protocol of the access point is determined as IP. Interlock method. The method of claim 12, The second uplink data is transmitted to the DSL application service provider, the DSL network service provider, or the broadband remote access server of the DSL network through the access point. The method of claim 12, The control station performs a proxy AAA function for AAA and Authentication-Authorization-Accounting (AAA) services of the DSL network when the terminal needs an authentication charging service. Way. In the interworking method of the mobile Internet network and DSL network, Receiving downlink data for a DSL service including a PPPoE or IPoE frame using an Ethernet protocol through an interface with an Ethernet aggregation node in a broadband remote access server (BRAS) of the DSL network; And And transmitting the downlink data to the control station of the portable internet network using the Ethernet protocol. The method of claim 22, And transmitting the downlink data received from the control station to the terminal using ETH-CS. When receiving the first downlink data from the DSL network, when the convergence sublayer is IP-CS, the second downlink data uses a tunnel identified as a data path tag mapped to a service flow. When the convergence sublayer is Ethernet-CS, a mobile Internet network including a base station and a control station transmitting or receiving using a tunnel identified by a data path tag mapped to an Ethernet address of a terminal is mapped. Transmitting and receiving a first uplink data from the portable internet network, and transmitting and receiving the second uplink data to the DSL network through an access point of the DSL network connected to the portable internet network; And Acquiring the second downlink data conforming to the protocol of the access point of the portable Internet network using the first downlink data, and using the first uplink data to conform to the protocol of the access point of the DSL network. A data converter for obtaining second uplink data; Interworking device of a mobile Internet network and a DSL network comprising a. The method of claim 24, And an address storage unit for storing the Ethernet address of the terminal. The method of claim 24, The data converter determines the protocol of the access point as PPP when the first downlink data or the first uplink data includes the PPP header, and when the PPP header is not included, the data conversion unit as the IP. Interworking device of internet network and DSL network. The method of claim 24, And the portable internet network connects to the DSL application service provider, the DSL network service provider, or the broadband remote access server of the DSL network through the access point.

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