WO2009038410A2 - Procédé d'interfonctionnement entre un réseau de communication mobile et un réseau de lignes d'abonnés numériques et système de communication mobile permettant de supporter ledit procédé - Google Patents

Procédé d'interfonctionnement entre un réseau de communication mobile et un réseau de lignes d'abonnés numériques et système de communication mobile permettant de supporter ledit procédé Download PDF

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Publication number
WO2009038410A2
WO2009038410A2 PCT/KR2008/005591 KR2008005591W WO2009038410A2 WO 2009038410 A2 WO2009038410 A2 WO 2009038410A2 KR 2008005591 W KR2008005591 W KR 2008005591W WO 2009038410 A2 WO2009038410 A2 WO 2009038410A2
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WIPO (PCT)
Prior art keywords
terminal
mobile communication
ppp
network
dsl
Prior art date
Application number
PCT/KR2008/005591
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English (en)
Other versions
WO2009038410A3 (fr
Inventor
Dong Hyun Lee
Bong Ho Kim
Su Lyun Sung
Original Assignee
Posdata Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020080091386A external-priority patent/KR20090031257A/ko
Application filed by Posdata Co., Ltd. filed Critical Posdata Co., Ltd.
Publication of WO2009038410A2 publication Critical patent/WO2009038410A2/fr
Publication of WO2009038410A3 publication Critical patent/WO2009038410A3/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/02—Inter-networking arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0892—Network architectures or network communication protocols for network security for authentication of entities by using authentication-authorization-accounting [AAA] servers or protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication

Definitions

  • the present invention relates to a method for interworking between heterogeneous communication networks, and more particularly, to a method for interworking a mobile communication network with digital subscriber line network.
  • DSL (Digital Subscriber Line) deployments for pure data services are mostly based on a PPPoE (PPP over Ethernet) as a link protocol between a BRAS (Broadband Remote Access Server) and a TE (Terminal Equipment) for IP configuration of the terminal and the control and management of the IP link to the terminal.
  • PPPoE Packet Control Protocol over Ethernet
  • the DSL deployments are mostly based on an IPoE (IP over Ethernet) as the link protocol between the BRAS and the TE.
  • ASP Application Service Provider
  • NSP Network Service Provider
  • BRAS based on IEEE 802.16
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide a method for interworking between a mobile communication network and a DSL network and a mobile communication system for supporting the method, which may provide operating procedure of control plane according to an interface node between the mobile communication network and DSL network, a convergence layer type of a mobile station, and a data receiving- transmitting protocol of the DSL network.
  • Another object of the present invention is to provide a method for interworking the mobile communication network with DSL network and a mobile communication system for supporting the method, which may provide data traffic process according to the interface node between the mobile communication network and DSL network, the convergence layer type of the mobile station, and the data receiving-transmitting protocol of the DSL network.
  • a method for interworking between a mobile communication network and a DSL network for providing a DSL service to a terminal of the mobile communication network comprises performing authentication and registration procedures of the terminal for the mobile communication network between the terminal and an AAA server of the mobile communication network; and when an initial service flow is established with the terminal, performing an authentication procedure of the terminal for the DSL network through the use of a PPPoE and a PPP session when a data receiving-transmitting protocol between the terminal and the DSL network is a PPP (Node-to-Node Protocol), and performing an authentication procedure of the terminal for the DSL network through the use of 802. Ix based authentication procedure when the data receiving-transmitting protocol is an IP.
  • PPPoE Node-to-Node Protocol
  • a method for interworking between a mobile communication network and a DSL network for providing a DSL service to a terminal of the mobile communication network comprises performing authentication and registration procedures of the terminal for the mobile communication network between the terminal and an AAA server of the mobile communication network; and performing an authentication procedure of the terminal for the DSL network through the use of a PPP session when a data receiving-transmitting protocol between the terminal and the DSL network is a PPP, and performing an authentication procedure of the terminal for the DSL network by a proxy function of the AAA server when the data receiving-transmitting protocol is an IP.
  • a method for interworking between a mobile communication network and a DSL network for providing a DSL service to a terminal of the mobile communication network comprises receiving an Ethernet frame including a PPPoE frame from the DSL network through an interface with an Ethernet aggregation node of the DSL network; obtaining an IP packet from the received Ethernet frame when a CS type of the terminal is an IP-CS; and transmitting the IP packet with a GRE header to a control station through the use of IP protocol.
  • a method for interworking between a mobile communication network and a DSL network for providing a DSL service to a terminal of the mobile communication network comprises receiving an IP packet from the terminal whose CS type is an IP-CS through a base station and a control station; and creating an Ethernet frame by adding a PPPoE frame to the IP packet, and transmitting the Ethernet frame to BRAS through an interface with an Ethernet aggregation node of the DSL network.
  • a method for interworking between a mobile communication network and a DSL network for providing a DSL service to a terminal of the mobile communication network comprises receiving a PPP packet over L2TP from an LNS of the DSL network; obtaining an IP packet from the PPP packet when a CS type of the terminal is an IP-CS; and transmitting the IP packet with a GRE header to a control station through the use of an IP.
  • a method for interworking between a mobile communication network and a DSL network for providing a DSL service to a terminal of the mobile communication network comprising: receiving an IP packet from the terminal whose CS type is an IP-CS through a base station and a control station; and transmitting the IP packet with a PPP header and a L2TP header to a LNS of the DSL network through a L2TP path.
  • a method for interworking between a mobile communication network and a DSL network for providing a DSL service to a terminal of the mobile communication network connected with an Ethernet aggregation node of the DSL network comprises establishing L2TP session with a LNS of the DSL network according to a subscriber profile obtained during an authentication procedure of the terminal for the mobile communication network when the authentication procedure is performed and an initial service flow is established with the terminal; establishing a PPP session with the LNS so as to obtain an IP address in the DSL network from the LNS; and providing the terminal with the obtained IP address.
  • a mobile communication system interworking with an Ethernet aggregation node of a DSL network for providing a DSL service to a terminal, comprises an AAA server configured to perform an authentication procedure of the terminal for a mobile communication network; and an interworking unit configured to obtain an IP address pre-reserved for interworking with the DSL network from a DHCP server of the mobile communication network and to transmit the obtained IP address to the terminal when a data receiving-transmitting protocol between the terminal and the DSL network is an IP, and to establish L2TP and PPP sessions with a LNS of the DSL network and to transmit the IP address in the DSL network obtained through the PPP session to the terminal when the data receiving-transmitting protocol between the terminal and the DSL network is a PPP.
  • [16] According to the embodiments of the present invention can realize the precise and correct interworking method between the mobile communication network and the DSL network by defining the operating procedure of control plane and the data traffic process according to the various locations of the interface node of the DSL network connected with the mobile communication network, the various data receiving- transmitting protocol on the interface node, and the various Convergence Sublayer used in the MS.
  • the downlink data received from the DSL network or the uplink data to be transmitted to the DSL network can be processed in the mobile communication network interworking with the DSL network.
  • FIG. 1 illustrates a network architecture for a method for interworking between a mobile communication network and DSL network according to first to seventh embodiments of the present invention
  • FIGs. 2 to 22 illustrate protocol stacks and data traffic process for the method for interworking between the mobile communication network and DSL network according to the first to seventh embodiments of the present invention
  • FIGs. 23 to 30 illustrate operating procedure of control plane for the method for interworking between the mobile communication network and DSL network according to the first to seventh embodiments of the present invention
  • FIG. 31 illustrates network architecture for the method for interworking between the mobile communication network and DSL network according to eighth to tenth embodiments of the present invention
  • FIGs. 32 to 40 illustrate protocol stacks and data traffic process for the method for interworking between the mobile communication network and DSL network according to the eighth to tenth embodiments of the present invention
  • FIGs. 41 to 45 illustrate operating procedure of control plane for the method for interworking between the mobile communication network and DSL network according to the eighth to tenth embodiments of the present invention
  • FIG. 46 conceptually illustrates an access and authentication procedure to the mobile communication network in the operating procedure of control plane according to the first to tenth embodiments of the present invention
  • FIG. 47 illustrates RADIUS message format exchanged between an ASN and a visiting AAA
  • FIG. 48 conceptually illustrates a PPP authentication and IP acquisition procedure in the operating procedure of control plane according to the first to second embodiments of the present invention.
  • FIG. 49 conceptually illustrates the PPP authentication and IP acquisition procedure in the operating procedure of control plane according to the eighth to ninth embodiments of the present invention.
  • FIG. 1 illustrates network architecture of the method for interworking between the mobile communication network and the DSL network, which can be applied to each of the first to seventh embodiments of the present invention.
  • the mobile communication network 102 is accessed an interface node 121 which connects between a BRAS 124 and an ASP 120 or NSP 122 of the DSL network 104 via an interworking unit 134.
  • the interworking between the mobile communication network 102 and the interface node 121 may be referred to as AlO interface interworking.
  • the mobile communication network 102 comprises a CSN (Connectivity Service
  • the terminal may be a mobile terminal including a MS (Mobile Station) 118, or a terminal including a TE (Terminal Equipment) 108 and a MS 114 connected to the TE 116.
  • MS Mobile Station
  • TE Terminal Equipment
  • the CSN 106 comprises an AAA (Authentication-Authorization-Accounting, not shown) and a PCRF (Policy and Charging Rules Function, not shown).
  • the AAA performs user authentication function, authorization function, and accounting function for the ASN 108 and the MS 114, 118.
  • the AAA may perform a proxy service for authentication, authorization, and accounting between a Home AAA (not shown) included in the DSL network 104 and the TE 116 as a visiting AAA.
  • the authentication proxy service includes proxy function between the visiting AAA and the Home AAA for device, user, or combined device/user authentication.
  • the authorization proxy service includes a proxy function between the visiting AAA and the Home AAA for the delivery of information to configure the session for access, mobility, QoS, and other applications.
  • the accounting proxy service includes a proxy function between the visiting AAA and the Home AAA for the delivery of information for the purpose of both offline accounting and online accounting.
  • the PCRF creates both a billing-related rule and a network service policy of the user for the ASN 108 and MS 114, 118.
  • the CSN 106 may comprise HA (Home Agent, not shown) for mobility of the MS 118.
  • the ASN 108 includes an access service network gateway (ASN-GW, not shown) corresponding to a control station, and a base station (not shown).
  • the ASN performs a Layer-2 connection establishment function between the BS and the MS 114, 118, a network discovery function, a network selection function, a transmission function for a Layer-3 connection establishment of the MS 114, 118, and a radio resource management function.
  • the ASN 108 transmits/receives data to/from the MS 114, 118 using ETH-CS
  • IP-Convergence Sublayer (Ethernet-Convergence Sublayer) or IP-CS (Internet Protocol-Convergence Sublayer) via the BS.
  • the MS 114 using ETH-CS classifies an uplink packet received from upper layer according to a predetermined criterion in the ETH-CS so as to transmit the uplink data to BS included the ASN 108.
  • the predetermined criterion is based on information about Ethernet frame included in the uplink packet.
  • the DSL network 104 comprises the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120, the ASP (Application Service Provider) 120,
  • the NSP 122 Network Service Provider 122, the BRAS (Broadband Remote Access Server) 124, a DSLAM (DSL Access Multiplexer) 126, and a modem 130 connected to the TE 132.
  • the ASP 120 corresponds to a service provider which is related with the outsourcing of information systems and application parts of enterprises.
  • the NSP 122 provides back-bone service about the infrastructure for accessing Internet to a provider which provides internet access service.
  • the BRAS 124 is equipment for interworking between Internet and the DSLAM 126 for the DSL network subscriber to access the Internet.
  • the DSLAM 126 is multiplexing equipment which multiplexes and demultiplexes a plurality of DSL modems and makes the DSL modem to access the DSL network for providing efficient DSL service.
  • the interworking unit (IWU) 134 is interworking equipment for interworking between the mobile communication network 102 and the DSL network 104.
  • the interworking unit 134 transmits/receives data to/from the DSL network 104 according to the data receiving-transmitting protocol of interface node between the mobile communication network 102 and the DSL network 104, and according to the CS type of the MS 114, 118.
  • protocol stacks and data traffic process for the method for interworking between the mobile communication network and the DSL network according to first to seventh embodiments of the present invention are described with reference to FIGs. 2 to 22. Also, operating procedure of control plane for the method for interworking between the mobile communication network and DSL network according to first to seventh embodiments of the present invention are described with reference to FIGs. 23 to 30.
  • the first and second embodiments of the present invention provide the interworking method between the mobile communication network and the DSL network when a CS type of the MS 114 is an ETH-CS, and the data receiving-transmitting protocol between the mobile communication network and the DSL network is a PPPoE (PPP over Ethernet).
  • a CS type of the MS 114 is an ETH-CS
  • the data receiving-transmitting protocol between the mobile communication network and the DSL network is a PPPoE (PPP over Ethernet).
  • FIG. 2 illustrates a protocol stack for the interworking method between the mobile communication network and the DSL network according to the first embodiment of the present invention.
  • the protocol stack shown in FIG. 2 is the protocol stack for the integrated interworking unit 134 and CSN 106.
  • the ASP 120 or NSP 122 creates a PPP packet by adding a PPP header to an IP packet in a PPP layer, and encapsulates the PPP packet with a L2TP(Layer 2 Tunneling Protocol) for tunneling in a L2TP layer. After that, the ASP 120 or NSP 122 adds an IP header to the PPP packet in an IP layer, and transmits the PPP packet with the IP header to the interworking unit 134 via link and physical layers.
  • the protocol stack 202 may be the protocol stack of the LNS (L2TP Network Server) included in the ASP 120 or NSP 122.
  • the interworking unit 134 Referring to a protocol stack 204 of the interworking unit 134, the interworking unit
  • the 134 obtains the PPP packet from the PPP packet with the IP header received from the ASP 120 or NSP 122 by the reverse order of the aforementioned steps performed in the protocol stack 202 of the ASP 120 or NSP 122.
  • the interworking unit 134 creates a PPPoE frame by adding a PPPoE header to the PPP packet in a PPPoE layer, and creates an Ethernet frame by adding an Ethernet frame header including an Ethernet address of TE 116 previously stored in the interworking unit 134 to the PPPoE frame in an Ethernet layer.
  • the Ethernet address of TE 116 may be a MAC address of an Ethernet card mapped to the MS 114.
  • the PPP packet may be mapped to the Ethernet address of TE 116, and mapping information may be previously stored in the interworking unit 134.
  • the interworking unit 134 determines a GRE Key mapped to the
  • Ethernet address of TE 116 and adds a GRE header including the GRE Key to the Ethernet frame.
  • the interworking unit 134 adds an IP header corresponding to the ASN-GW mapped to the Ethernet address of TE 116 to the Ethernet frame in an IP layer, and then transmits the Ethernet frame with the IP header to the ASN-GW via link and physical layers.
  • information considering the ASN-GW mapped to the Ethernet address of TE 116 may be the Ethernet address, IP address, or GRE Key of the ASN-GW, and information considering the ASN-GW may be previously stored in the interworking unit 134.
  • the ASN-GW obtains the Ethernet frame from the Ethernet frame with the IP header received from the interworking unit 134 by the reverse order of the aforementioned steps performed in the protocol stack 204 of the interworking unit 134.
  • the ASN-GW determines a data path tag mapped to the Ethernet address of TE 116 and the BS. After that, the ASN-GW encapsulates the Ethernet frame by adding the data path tag and IP header corresponding to the determined BS to the Ethernet frame, and then transmits the encapsulated Ethernet frame to the BS through a tunnel designated by the data path tag via link and physical layers.
  • the data path tag may be the GRE Key mapped to the Ethernet address of TE 116.
  • the BS obtains the Ethernet frame from the Ethernet frame with the data path tag and IP header received from the ASN-GW by the reverse order of the aforementioned steps performed in the protocol stack 206 of the ASN-GW. Then, the BS adds a CID mapped to the data path tag to the Ethernet frame using ETH-CS, and then transmits the Ethernet frame with the CID to the MS 114 corresponding to the CID through the lower layer of IEEE 802.16.
  • the MS 114 forwards the Ethernet frame received from the BS to the TE 116. Thereafter, the TE 116 obtains the PPP packet by removing the PPPoE header from the Ethernet frame received from the MS 114, and obtains desired data by removing the PPP header from the PPP packet.
  • the aforementioned first embodiment of the present invention describes the in- terworking method used for transmitting the downlink data from the ASN 120 or NSP 122 to the TE 116 through the protocol stack structure shown in FIG. 2, wherein the in- terworking method for transmitting the uplink data can be performed by the reverse order of the aforementioned steps, whose detailed explanation is omitted.
  • FIG. 3 illustrates the flow chart of the downlink data traffic process for the interworking method between the mobile communication network and the DSL network according to the first embodiment of the present invention.
  • step S300 the interworking unit receives a PPP packet with the L2TP from the
  • step S304 the interworking unit removes a L2TP header from the PPP packet, adds a PPPoE header to the PPP packet, and then creates a PPPoE frame.
  • the interworking unit determines an Ethernet address of TE corresponding to the received PPP packet, and creates an Ethernet frame by adding an Ethernet frame header including the Ethernet address of TE to the PPPoE frame.
  • the Ethernet address of TE may be previously stored in the interworking unit, and may be the MAC address of Ethernet card corresponding to the MS.
  • the interworking unit finds a GRE Key mapped to the TE in step S308.
  • the interworking unit adds a GRE header with the found GRE Key and an IP header to the Ethernet frame in step S310, and then transmits the Ethernet frame with the GRE header and IP header to the ASN-GW in step S312.
  • step S314 the ASN-GW removes the GRE header and IP header from the
  • the ASN-GW determines a data path tag corresponding to the Ethernet address of TE and BS.
  • the ASN-GW adds the data path tag and an IP header to the Ethernet frame, and then transmits the Ethernet frame with the data path tag and IP header toward the BS through a tunnel designated by the data path tag.
  • the data path tag may be the GRE Key corresponding to the Ethernet address of TE.
  • step S322 the BS decapsulates the Ethernet frame with the data path tag and IP header received from the BS by removing the data path tag and IP header from the received Ethernet frame with the data path tag and IP header, and then identifies a CID based on the data path tag.
  • step S324 the BS transmits the Ethernet frame with the identified CID toward the MS corresponding to the identified CID.
  • the MS forwards the Ethernet frame received from the BS to the TE in step
  • FIG. 4 illustrates the flow chart of the uplink data traffic process for the interworking method between the mobile communication network and the DSL network according to the first embodiment of the present invention.
  • step S400 the TE sends an Ethernet frame including a PPPoE frame to the MS.
  • the MS identifies a CID in step S402, and transmit the Ethernet frame with the CID to the BS corresponding to the CID in step S404.
  • step S406 the BS determines a data path tag and the ASN-GW based on the CID when receiving the Ethernet frame with the CID from the MS.
  • the BS transmits the Ethernet frame with the data path tag to the ASN-GW through a tunnel designated by the data path tag in step S408.
  • the BS may transmit the Ethernet frame to the ASN-GW through the use of EHT/GRE/IP protocol stack.
  • step S409 the ASN-GW decapsulates the received Ethernet frame with the data path tag by removing the data path tag from the received Ethernet frame.
  • step S410 the ASN-GW encapsulates the received Ethernet frame for GRE tunneling to send the interworking unit 134.
  • step S412 the interworking unit removes a GRE header and an Ethernet frame header from the Ethernet frame received from the ASN-GW.
  • the interworking unit determines whether the received Ethernet frame includes a PPPoE header or not.
  • step S416 when the received Ethernet frame includes the PPPoE header, the interworking unit determines that the protocol of interface node for connecting the mobile communication network with the DSL network is PPP, removes the PPPoE header from the received Ethernet frame to obtain PPP frame, and encapsulates the PPP frame to L2TP to relay ASP 120/NSP 122.
  • FIG. 5 illustrates a protocol stack for the interworking method between the mobile communication network and DSL network according to the second embodiment of the present invention.
  • the protocol stack showed in FIG. 5 is the protocol stack when the interworking unit 134 is separated from CSN 106.
  • protocol stack 502 of the ASP 120/NSP 122 is same as the protocol stack 202 shown in FIG. 2.
  • the protocol stack 502 may be a protocol stack of a LNS included the ASP 120 or the NSP 122.
  • the interworking unit 134 obtains a PPP packet from a downlink data received from ASP 120 or NSP 122 by reverse order of the aforementioned steps performed in the protocol stack 202 of the ASP 120/NSP 122.
  • the interworking unit 134 determines whether a PPP header is included in the received downlink data. If it is determined that the PPP header is included in the received downlink data, the interworking unit 134 extracts the PPP packet from the received downlink data.
  • the interworking unit 134 encapsulates the PPP packet into a PPPoE layer
  • the interworking unit 134 creates the Ethernet frame including the PPPoE frame as data field and Ethernet address of TE 116, and then transmits the Ethernet frame to the CSN 106 via a physical layer.
  • the PPP packet is mapped to an Ethernet address of TE 116, the mapping information is previously stored in the interworking unit 134 before creating the Ethernet frame.
  • the CSN 106 obtains the Ethernet frame from downlink data received from the interworking unit 134 by the reverse order of the aforementioned steps performed in the protocol stack 504 of the interworking unit 134. After that, the CSN 106 transmits the Ethernet frame to the ASN-GW mapped to the Ethernet address of TE 116.
  • the information about the mapping relationship between the Ethernet address of TE 116 and the ASN-GW may previously be stored in the CSN 106.
  • the transmission of the Ethernet frame from the CSN 106 to the ASN-GW is performed using Ethernet transmission, IP transmission, transmission through GRE tunnel.
  • the ASN-GW obtains the Ethernet frame from downlink data received from the CSN 106.
  • the ASN-GW determines a data path tag mapped to the Ethernet address of the TE and the BS, and then encapsulates the Ethernet frame by adding the data path tag to the Ethernet frame.
  • the data path tag may be a GRE Key mapped to the Ethernet address of the TE 116.
  • the ASN-GW adds an IP header corresponding to the determined BS to the
  • Ethernet frame with the data path tag in an IP layer transmits the Ethernet frame with the data path tag and IP header to the BS through a tunnel designated by the data path tag via link and physical layers.
  • the MS 114 obtains the Ethernet frame from downlink data received from the BS by the reverse order of the aforementioned steps performed in the protocol stack 508 of the BS, and then transmits the Ethernet frame to the TE via a physical layer.
  • the TE 116 obtains the Ethernet frame from the downlink data received from the MS 114, and then obtains a desired data from the received Ethernet frame via PPPoE layer, PPP layer, and IP layer.
  • the aforementioned second embodiment of the present invention describes the in- terworking method used for transmitting the downlink data from the ASN 120 or NSP 122 to the TE 116 through the protocol stack structure shown in FIG. 5, wherein the in- terworking method for transmitting the uplink data can be performed by the reverse order of the aforementioned steps, whose detailed explanation is omitted.
  • FIG. 6 illustrates downlink data traffic process for the interworking method between the mobile communication network and DSL network according to the second embodiment of the present invention.
  • step of S600 the interworking unit receives a PPP packet with a L2TP from the
  • the interworking unit may receive the PPP packet from the LNS included the ASP or the NSP.
  • the interworking unit finds an Ethernet address of the TE corresponding to the PPP packet in step S602.
  • the Ethernet address of the TE may be previously stored in the interworking unit.
  • the interworking unit adds an Ethernet header and a PPPoE header to the PPP packet, and then relays an Ethernet frame with the PPPoE header and Ethernet header corresponding to the Ethernet address of the TE.
  • step S606 the CSN determines the Ethernet address of the TE using the received Ethernet frame, determines the ASN-GW corresponding to the Ethernet address of the TE, and transmits the received Ethernet frame to the corresponding ASN-GW.
  • the ASN-GW determines a data path tag corresponding to the Ethernet address of the TE and the BS in step S608.
  • the ASN-GW adds the data path tag to the Ethernet frame, encapsulates the Ethernet frame through use of IP/GRE/ETH as protocol stack, and transmits the encapsulated Ethernet frame to the BS through a tunnel designated by the data path tag.
  • the data path tag may be a GRE Key matched with the Ethernet address of the TE.
  • FIG. 7 illustrates uplink data process for the interworking method between the mobile communication network and DSL network according to the second embodiment of the present invention.
  • S700 to S708 are same as steps S400 to S408 shown in FIG. 4.
  • step S710 the ASN-GW decapsulates an Ethernet frame received from the BS and forwards the received Ethernet frame to the corresponding CSN.
  • step S712 the CSN relays the received Ethernet frame to the interworking unit.
  • step S714 the interworking unit determines whether a PPP header is included in the received Ethernet frame after removing an Ethernet header from the received Ethernet frame. If the PPP header is included in the received Ethernet frame, the interworking unit determines protocol of interface node connecting the mobile communication network with DSL network is PPP, and then transmits a PPP packet obtained from the received frame to the ASP or the NSP with a L2TP in step S716.
  • the third and fourth embodiments provide the interworking method between the mobile communication network and DSL network when the CS type of MS is the ETH-CS, data receiving-transmitting protocol between the mobile communication network and DSL network is IPoE (IP over Ethernet).
  • IPoE IP over Ethernet
  • FIG. 8 illustrates a protocol stack for the interworking method between the mobile communication network and DSL network according to the third embodiment of the present invention.
  • the protocol stack shown in FIG. 8 is the protocol stack for the integrated interworking unit 134 and CSN 106.
  • NSP 122 or ASP 120 adds an IP header corresponding to the TE 116 to an IP packet, and then transmits the IP packet to the interworking unit 134.
  • the interworking unit 134 receives the IP packet from the NSP 122 or the ASP 120 via link and physical layers.
  • the interworking unit 134 creates an Ethernet frame by adding an Ethernet frame header including an Ethernet address of the TE 116 previously stored in the interworking unit 134 to the IP packet.
  • the Ethernet address of the TE 116 may be a MAC address of an Ethernet card corresponding to the MS 114.
  • an IP packet may be mapped to the Ethernet address of the TE 116 and the mapping information may be previously stored in the interworking unit 134.
  • the interworking unit 134 finds a GRE Key matched to the Ethernet address of the TE 116, and then adds a GRE header including the GRE Key to the Ethernet frame. Next, the interworking unit 134 adds an IP header corresponding to the ASN-GW mapped to the Ethernet address of the TE 116 to the Ethernet frame in an IP layer, and then transmits the Ethernet frame the GRE header and the IP header to the corresponding ASN-GW via link and physical layers.
  • information about the ASN-GW mapped to the Ethernet address of the TE 116 may be an Ethernet address, an IP address, or a GRE Key of the ASN-GW and the information about the ASN-GW may be previously stored in the interworking unit 134.
  • Ethernet frame is transmitted to the MS 114 via a protocol stack 806 of the ASN-GW and a protocol stack 808 of the BS.
  • the MS 114 relays the received Ethernet frame to the TE 116, and then the TE 116 obtains a desired data from the Ethernet frame received from the MS 114.
  • the aforementioned third embodiment of the present invention describes the interworking method used for transmitting the downlink data from the ASN 120 or NSP 122 to the TE 116 through the protocol stack structure shown in FIG. 8, wherein the interworking method for transmitting the uplink data can be performed by the reverse order of the aforementioned steps, whose detailed explanation is omitted.
  • FIG. 9 illustrates the flow chart of the downlink data traffic process for the interworking method between the mobile communication network and the DSL network according to the third embodiment of the present invention.
  • step S900 the interworking unit receives an IP packet from the LNS included in the NSP/ASP. Then, the interworking unit finds an Ethernet address of the TE mapped to the IP packet, and then creates an Ethernet frame by adding an Ethernet frame header corresponding to the found Ethernet address of the TE to the IP packet in step S904.
  • the Ethernet address of the TE may be previously stored in the interworking unit and may be a MAC address of an Ethernet card corresponding to the MS.
  • step S906 the interworking unit finds a GRE Key mapped to the TE. After that, the interworking unit adds a GRE header including the found GRE Key and IP header to the Ethernet frame in step S908, and then transmits the Ethernet frame with the GRE header and IP header to the ASN-GW in step S910.
  • the ASN-GW removes the GRE header and IP header from the received
  • Ethernet with the GRE header and IP header in step S912 and then determines a data path tag corresponding to the Ethernet address of the TE and the BS in step S914.
  • the ASN-GW adds the data path tag and an IP header to the Ethernet frame and transmits the Ethernet frame with the data path tag and IP header to the BS through a tunnel designated by the data path tag in step S918.
  • the data path tag may by the GRE Key mapped to the Ethernet address of the TE.
  • step S920 the BS decapsulates the Ethernet frame with the data path tag and IP header by removes the data path tag and IP header from the received Ethernet frame with the data path tag and IP header, and then determines a CID mapped to the data path tag. After that, the BS adds the determined CID to the Ethernet frame and transmits the Ethernet frame with the CID to the MS corresponding to the CID in step S922.
  • FIG. 10 illustrates the flow chart of the uplink data traffic process for the interworking method between the mobile communication network and the DSL network according to the third embodiment of the present invention.
  • step SlOOO the TE sends an Ethernet frame including an IP packet to the MS. Then, the MS determines a CID in step S 1002 and transmits the Ethernet frame with the determined CID to the BS corresponding to the CID in step S 1004.
  • the BS determines a data path tag and the ASN-GW based on the CID in step S 1006 when receiving the Ethernet frame from the MS. After that, the BS adds the data path tag to the received Ethernet frame and transmits the Ethernet frame with the data path tag to the ASN-GW through a tunnel designated by the data path tag in step
  • the BS may transmit the Ethernet frame to the ASN-GW through the use of ETH/GRE/IP as protocol stack.
  • the ASN-GW decapsulates the Ethernet frame with the data path tag by removing the data path tag from the Ethernet frame with the data path tag in step
  • the interworking unit obtains the IP packet by removing the GRE header and IP header from the Ethernet frame in step S 1012, and then transmits the obtained IP packet to the ASP or NSP in step S 1014.
  • FIG. 11 illustrates a protocol stack for the interworking method between the mobile communication network and the DSL network according to the fourth embodiment of the present invention.
  • the protocol stack shown in FIG. 11 is the protocol stack when the interworking unit 134 is separated from the CSN 106.
  • the interworking unit 134 receives IP packet from the ASP 120 or NSP 122. Next, in an Ethernet layer, the interworking unit 134 creates an Ethernet frame including the IP packet and an Ethernet address of TE 116 previously stored in the interworking unit 134. In one embodiment of the present invention, the IP packet is mapped to the Ethernet address of the TE 116 and the mapping information is previously stored in the interworking unit 134 before creating the Ethernet frame.
  • the Ethernet frame is transmitted to the CSN 106 via a physical layer, and then the Ethernet frame is transmitted to the TE 116 through a protocol stack 1106 of the CSN 106 and ASN-GW, a protocol stack 1108 of the BS, and a protocol stack 1110 of the MS 114.
  • the TE 116 receives the Ethernet frame from the MS 114 and obtains a desired data from the received Ethernet frame by decapsulating the Ethernet frame in an IP layer.
  • the aforementioned fourth embodiment of the present invention describes the interworking method used for transmitting the downlink data from the ASN 120 or NSP 122 to the TE 116 through the protocol stack structure shown in FIG. 11, wherein the interworking method for transmitting the uplink data can be performed by the reverse order of the aforementioned steps, whose detailed explanation is omitted.
  • FIG. 12 illustrates downlink data traffic process for the interworking method between the mobile communication network and DSL network according to the fourth embodiment of the present invention.
  • step S 1200 the interworking unit receives an IP packet from the ASP or the NSP of the DSL network.
  • step S 1202 the interworking unit finds an Ethernet address of the TE mapped to the IP packet.
  • the Ethernet address of the TE may be previously stroked in the interworking unit and the interworking unit may determine whether the IP packet includes a PPP header when receiving the IP packet from the ASP or the NSP. If the IP packet includes the PPP header, the interworking unit determines that a PPP is used as data receiving- transmitting protocol. After that, in step S 1204, the interworking unit adds an Ethernet header corresponding to the Ethernet address of the TE and an IP header to the IP packet, and then transmits an Ethernet frame including the Ethernet header and the IP header to the CSN.
  • step S 1206 the CSN finds the Ethernet address of the TE using the Ethernet frame, determines the ASN-GW mapped to the Ethernet address of the TE, and transmits the Ethernet frame to the determined ASN-GW.
  • step S 1208 the ASN-GW determines a data path tag corresponding to the
  • step S 1210 the ASN-GW adds the data path tag to the Ethernet frame and transmits the Ethernet frame with data path tag to the BS through tunnel designated by the data path tag after encapsulation through use of IP/ GRE/ETH as protocol stack.
  • steps S1212 to S1218 are same as steps S916 to S922 shown in FIG. 9.
  • FIG. 13 illustrates downlink data traffic process for the interworking method between the mobile communication network and DSL network according to the fourth embodiment of the present invention.
  • steps S 1300 to S 1308 are same as steps SlOOO to S1008 shown in FIG. 10.
  • the ASN-GW decapsulates an Ethernet frame received from the BS and transmits the Ethernet frame to the corresponding CSN in step S 1310.
  • the CSN relays the Ethernet frame to the interworking unit.
  • step S 1314 the interworking unit determines whether a PPP header is included in the Ethernet frame. If the PPP header is not included in the Ethernet frame, it is determined that protocol of interface node connecting the mobile communication network to the DSL network is an IP, and the interworking unit transmits an IP packet extracted from the Ethernet frame to the ASP or the NSP in step S 1316.
  • the fifth and sixth embodiments provide the interworking method between the mobile communication network and the DSL network when the CS type of MS is an IP-CS, the data receiving-transmitting protocol between the mobile communication network and the DSL network is the IP.
  • FIG. 14 illustrates the protocol stack for the interworking method between the mobile communication network and the DSL network according to the fifth embodiment of the present invention.
  • the protocol stack shown in FIG. 14 may be the protocol stack for the integrated the interworking unit 134 and the CSN 106.
  • the ASP 120 or NSP 122 relays a downlink data with an IP header corresponding to the MS 114 to the interworking unit 134 in an IP layer.
  • the interworking unit 134 receives the IP packet from the ASP 120 or the NSP 122. Then, the interworking finds a GRE key mapped to a service flow of the IP packet and adds a GRE header including the found GRE key to the IP packet in a GRE layer. In an IP layer, the interworking unit 134 adds an IP header corresponding to the ASN-GW mapped to the service flow of the IP packet to the IP packet with the GRE header, and then transmits the IP packet with the GRE header and IP header to the corresponding ASN-GW via link and physical layers.
  • the ASN-GW obtains the IP packet from the received IP packet with the GRE header and IP header by the reverse order of the aforementioned steps performed in the protocol stack 1404 of the interworking unit 134. Then, in a DP (Data path) layer, the ASN-GW determines a data path tag mapped to the service flow of the IP packet and the BS. After that the ASN- GW encapsulates the IP packet by adding the data path tag and an IP header corresponding to the BS to the IP packet. Then, the ASN-GW transmits the IP packet with the data path tag and the IP header to the BS through a tunnel designated by the data path tag via link and physical layers.
  • the data path tag may be a GRE Key included in information of the service flow.
  • the BS obtains the IP packet from the received IP packet with the data path tag and IP header by the reverse order of the aforementioned steps performed in the protocol stack 1406 of the ASN-GW. Then, the BS adds a CID mapped to the data path tag to the IP packet using the IP-CS, and then transmits the IP packet with the CID to the MS 114 corresponding to the CID through a lower layer of IEEE 802.16.
  • the MS 114 obtains the IP packet from the received IP packet with the CID, and then forwards the IP packet to the TE 116. After that, the TE 116 obtains a desired data from the received IP packet.
  • the aforementioned fifth embodiment of the present invention describes the interworking method used for transmitting the downlink data from the ASN 120 or NSP 122 to the TE 116 through the protocol stack structure shown in FIG. 14, wherein the interworking method for transmitting the uplink data can be performed by the reverse order of the aforementioned steps, whose detailed explanation is omitted.
  • FIG. 15 illustrates the flow chart of the downlink data traffic process for the interworking method between the mobile communication network and the DSL network according to the fifth embodiment of the present invention.
  • step S1500 the interworking unit receives an IP packet from the ASP or NSP. Then, interworking unit adds a GRE header and IP header to the received IP packet and relays the IP packet with the GRE header and IP header to the ASN-GW mapped to a service flow of the IP packet in step S 1502.
  • the ASN-GW decapsulates the IP packet with the GRE header and IP header, and then determines a data path tag corresponding to the service flow of the IP packet and the BS in step S 1504. After that, the ASN-GW adds the data path tag to the IP packet, and then transmits the IP packet with the data path tag to the determined BS through a tunnel designated by the data path tag in step S 1506.
  • the data path tag may be the GRE key included the information of the service flow.
  • the BS decapsulates the IP packet with the data path tag by removing the data path tag from the received IP packet with the data path tag, and then determines a CID based on the data path tag in step S 1508. Then, the BS transmits the IP packet with the CID to the MS corresponding to the CID in step S 1510.
  • the MS receives the IP packet with the CID from the BS and forwards the received IP packet to the TE in step S 1512. Then, the TE receives the IP packet from the MS and obtains a desired data by receiving the IP packet in step S 1514.
  • FIG. 16 illustrates the flow chart of the uplink data traffic process for the interworking method between the mobile communication network and the DSL network according to the fifth embodiment of the present invention.
  • step S 1600 the TE sends an IP packet to the MS. Then, the MS determines a CID after receiving the IP packet from the TE in step S 1602. After that, the MS adds the CID to the received IP packet, and then transmits the IP packet with the CID through use of the IP-CS to the BS corresponding to the CID instep S 1604.
  • step S 1606 the BS receives the IP packet with the CID and determines a data path tag and the ASN-GW based on the CID. After that, the BS adds the data pat tag to the received IP packet, and then transmits the IP packet with the data path tag to the determined ASN-GW through a tunnel designated by the data path tag in step S 1608.
  • step S 1609 the ASN-GW decapsulates the IP packet with the data path tag by removing the data path tag from the received IP packet with the data path tag. Then, the ASN-GW encapsulates the IP packet for GRE tunneling and transmits the IP packet to the interworking unit in step S 1610. After that, in step S 1612, the in- terworking unit decapsulates the received IP packet and relays the IP packet to the ASP or NSP with an IP-transport.
  • FIG. 17 illustrates the protocol stack for the interworking method between the mobile communication network and the DSL network according to the sixth embodiment of the present invention.
  • the protocol stack shown in FIG. 17 may be the protocol stack when the interworking unit 134 is separated from the CSN 106.
  • the interworking unit 134 receives an IP packet from the ASP 120 or NSP and relays the IP packet to the CSN 106.
  • the CSN 106 relays the IP packet to the ASN-GW mapped to the IP packet.
  • the information about the mapping relationship between the ASN-GW and the IP packet may be previously stored in the CSN 106.
  • the transmission of the IP packet from the CSN 106 to the ASN-GW may be performed using Ethernet transmission, IP transmission, or transmission through a GRE tunnel.
  • the ASN-GW determines a data path tag mapped to a service flow of the received IP packet and the BS, and then encapsulates the IP packet by adding the data path tag to the received IP packet.
  • the data path tag may be a GRE Key included in information about the service flow.
  • the ASN-GW adds an IP header corresponding to the determined BS to the IP packet with the data path tag in an IP layer. After that, the ASN-GW transmits the IP packet with the data path tag and IP header to the BS through a tunnel designated by the data path tag via link and physical layers.
  • the BS obtains the IP packet from the IP packet with the data path tag and IP header by the reverse order of the aforementioned steps performed in the protocol stack 1706 of the ASN-GW and CSN 106. After that, the BS adds a CID mapped to the data path tag to the IP packet in an IP-CS layer, and then transmits the IP packet with the CID to the MS 114 corresponding to the CID through a lower layer of IEEE 802.16
  • the MS obtains a desired data by decapsulating the IP packet in an IP layer.
  • the aforementioned sixth embodiment of the present invention describes the interworking method used for transmitting the downlink data from the ASN 120 or NSP 122 to the MS 114 through the protocol stack structure shown in FIG. 17, wherein the interworking method for transmitting the uplink data can be performed by the reverse order of the aforementioned steps, whose detailed explanation is omitted.
  • FIGs. 18 and 19 illustrate the flow chart of the downlink data traffic and uplink data traffic process for the interworking method between the mobile communication network and the DSL network according to the sixth embodiment of the present invention.
  • the interworking unit 134 transmits the IP packet to the CSN 106 instead of the ASN-GW and the CNS 106 transmits again the received IP packet to the ASN- GW because the interworking unit 134 is separately provided from the CSN 106; there are no requirement for the encapsulation procedure of adding the GRE header and IP header into the data packet by the interworking unit 134, and the decapsulation procedure of removing the GRE header and IP header from the data packet by the CSN 134; and the MS finally obtains the desired downlink data, the downlink data traffic process for the interworking method between the mobile communication network and the DSL network according to the sixth embodiment of the present invention shown in FIG. 18 is identical to the process explained in FIG. 15. Thus, the detailed explanation about FIG. 18 will be omitted.
  • the ASN-GW transmits the IP packet to the CSN 106 and the CNS 106 transmits again the received IP packet to the interworking unit 134 because the interworking unit 134 is separately provided from the CSN 106; and the IP packet encapsulated in the ASN-GW is decapsulated in the CSN, and the decapsulated packet is transmitted to the interworking unit 134
  • the uplink data traffic process for the interworking method between the mobile communication network and the DSL network according to the sixth embodiment of the present invention shown in FIG. 19 is identical to the process explained in FIG. 16. Thus, the detailed explanation about FIG. 19 will be omitted.
  • the interworking method between the mobile communication network and the DSL network according to the seventh embodiment of the present can be applied when the CS type of MS is an IP-CS, the data receiving-transmitting protocol between the mobile communication network and the DSL network is the PPP.
  • the interworking method between the mobile communication network and the DSL network according to the seventh embodiment of the present is applicable when the MS does not support the PPP.
  • the interworking unit establishes a PPP session with the LNS included in the NSP of the DSL network 104 on behalf of the TE 116 by performing proxy function.
  • FIG. 20 illustrates the protocol stack for the interworking method between the mobile communication network and the DSL network according to the seventh embodiment of the present invention.
  • the protocol stack shown in FIG. 20 may be the protocol stack for the integrated the interworking unit 134 and CSN 106.
  • the NSP 122/ASP 120 creates a PPP packet by adding a PPP header to an IP packet in a PPP layer and encapsulates the PPP packet using L2TP for tunneling in a L2TP layer. After that, the NSP 122/ASP 120 adds an IP header to the PPP packet in an IP layer and transmits the PPP packet with the IP header to the interworking unit 134 via link and physical layers.
  • the protocol stack 2002 may be the protocol stack of the LNS included in the NSP 122/ASP 120.
  • the interworking unit 134 obtains the IP packet from downlink data received from the NSP 122/ASP 120 by the reverse order of the aforementioned steps performed in the protocol stack 2002 of the NSP 122/ASP 120. After that, the interworking unit 134 finds a GRE Key mapped to a service flow of the IP packet in a GRE layer and adds a GRE header including the found GRE key to the IP packet. Then, the interworking unit 134 adds an IP header to the IP packet with GRE header in an IP layer and transmits the IP packet with the GRE header and IP header to the corresponding ASN-GW through link and physical layers.
  • the ASN-GW obtains IP packet from the received IP packet with the GRE header and IP header by reverse order of the aforementioned steps performed in the protocol stack 2004 of the interworking unit 134. After that, in a DP (Dada Path) layer, the ASN-GW determines a data path tag mapped to the service flow of the IP packet and the BS, and then encapsulates the IP packet by adding the data path tag and an IP header corresponding to the determined BS to the IP packet. Then, the ASN-GW transmits the IP packet with the data path tag and IP header to the BS through a tunnel designated by the data path tag via link and physical layers.
  • the data path tag may be the GRE Key mapped to the service flow of the IP packet.
  • the BS obtains the IP packet from the received IP packet with the data path tag and IP header by the reverse order of the aforementioned steps performed in the protocol stack 2006 of the ASN-GW. After that, the BS adds a CID mapped to the data path tag to the IP packet using IP-CS and transmits the IP packet with the CID to the MS 114 corresponding to the CID through a lower layer of IEEE 802.16.
  • the MS 114 transmits the IP packet received from the BS to the TE 116, and TE 116 obtains a desired data using the IP packet received from the MS 114.
  • the aforementioned seventh embodiment of the present invention describes the in- terworking method used for transmitting the downlink data from the ASN 120 or NSP 122 to the TE 116 through the protocol stack structure shown in FIG. 20, wherein the interworking method for transmitting the uplink data can be performed by the reverse order of the aforementioned steps, whose detailed explanation is omitted.
  • FIG. 21 illustrates the flow chart of the downlink data traffic process for the interworking method between the mobile communication network and the DSL network according to the seventh embodiment of the present invention.
  • step S2100 the interworking unit receives an IP packet including a PPP header from the NSP (or ASP) of the DSL network through a L2TP. Then, the interworking unit obtains the IP packet by removing the PPP header and an L2TP header, and then forwards the IP packet to the ASN-GW in step S2102.
  • the interworking unit may finds a GRE Key mapped to a service flow of the IP packet, add a GRE header including the found GRE Key and an IP header to the IP packet, and then transmit the IP packet with the GRE header and IP header to the ASN-GW through a tunnel designated by the GRE-Key.
  • step S2112 the ASN-GW determines a data path tag mapped to the service flow of the IP packet and the BS. After that, the ASN-GW adds the data path tag and IP header to the IP packet received from the interworking unit, and then transmits the IP packet with the data path tag and IP header to the BS through a tunnel designated by the data path tag in step S2114.
  • the data path tag may be the GRE Key mapped to the service flow of the IP packet.
  • step of S2116 the BS decapsulates the IP packet with the data path tag and IP header by removing the data path tag and IP header, and then determines a CID mapped to the data path tag. Then, the BS adds the determined CID to the IP packet and transmits the IP packet with the CID to the corresponding MS in step S2118.
  • the MS receives the IP packet with the CID from the BS in step S2119 and forwards the IP packet to the TE in step S2120. Then, the TE obtains a desired data from by receiving the IP packet from the MS in step S2122.
  • FIG. 22 illustrates the flow chart of the uplink data traffic process for the interworking method between the mobile communication network and the DSL network according to the seventh embodiment of the present invention.
  • step S2200 the TE sends an IP packet to the MS. Then, the MS determines a CID in step S2202 and transmits the IP packet with the CID to the BS corresponding to the CID after adding the CID to the IP packet in step S2204.
  • the BS determines a data path tag and the ASN-GW based on the CID when receiving the IP packet with the CID from the MS in step S2206. Then, the BS adds the data path tag to the IP packet and transmits the IP packet with the data path tag to the ASN-GW through a tunnel designated by the data path tag in step S2208.
  • the ASN-GW receives the IP packet from the BS in step S2209 and transmits the IP packet to the interworking unit in step S2210.
  • a process for decapsulating the received IP packet by removing the data path tag from the receive IP packet, and a process for encapsulating for GRE tunneling of the received IP packet may be further comprised.
  • step S2216 the interworking unit adds a PPP header and L2TP header to the received IP packet and transmits the IP packet with the L2TP header and PPP header to the LNS included in the ASP/NSP using a L2TP tunnel.
  • a process for determining a PPP session mapped to the IP packet for determination of the PPP header may be comprised additionally.
  • FIG. 23 conceptually illustrates the operating procedure of control plane for the interworking method between the mobile communication network and the DSL network according to the present invention.
  • step S2300 an access authentication procedure to the mobile communication network is performed between the MS and the NSP/ASP of the DSL network via the NAS included in the ASN of the mobile communication network and the visiting AAA included in the CSN of mobile communication network.
  • step 2302a a DHCP procedure is performed between a DHCP client of the MS and a DHCP proxy/relay server of the ASN to allocate the IP address in the DSL network for the MS when the CS type of the MS is the IP-CS.
  • step S2302b the DHCP proxy/relay server performs the DHCP procedure with the DHCP server of the DSL network to obtain the IP address in the DSL network, and allocates the obtained IP address to the MS when the DHCP proxy/relay server performs a DHCP relay function.
  • step S2302c the DHCP procedure is directly performed between the DHCP client of the MS and the DHCP server of the DSL network when the CS type of the MS is the ETH-CS and data receiving-transmitting protocol is the IP.
  • the DHCP client of the MS obtains the IP address in DSL network from the DHCP server of the DSL network.
  • step S2302d a PPP authentication procedure and an IP acquisition procedure are performed between the MS and the NSP/ASP of the DSL network when the data receiving-transmitting is the PPP.
  • the MS obtains the IP address in the DSL network during the IP acquisition procedure.
  • FIG. 24 illustrates the operating procedure of control plane for the interworking method between the mobile communication network and the DSL network according to the first embodiment of the present invention.
  • the operating procedure of control plane shown in FIG. 24 may be applied when the CS type of the MS 114 is the ETH- CS, the data receiving-transmitting protocol between the mobile communication network 102 and the DSL network 104 is the PPPoE, and the interworking unit is separated from the ASN-GW or CSN.
  • the MS performs the mobile communication network entry and initial authentication procedure with the AAA of mobile communication network in step S2400.
  • the SFA Service Flow Authorization
  • ISF Initial Service Flow
  • a tunnel between the ASN-GW and the interworking unit may be established before below described a PPPoE session establishment when the interworking unit is not co-located with the ASN-GW.
  • the interworking unit may be located in HA (Home Agent) for MIP (Mobile IP) case or CR (Core Router) for SIP (Simple IP) case.
  • HA Home Agent
  • MIP Mobile IP
  • CR Core Router
  • SIP Simple IP
  • an MIP tunnel or simple IP tunnel may be established between the ASN-GW and the interworking unit.
  • an Ethernet frames from user are encapsulated in a GRE tunnel and transported to the interworking unit.
  • step S2404 the TE performs the PPPoE session establishment with the interworking unit for transmitting a PPP packet through an Ethernet.
  • step S2406 the interworking unit negotiates a PPP LCP (Link Control Protocol) for a PPP session.
  • the PPP LCP negotiation procedure comprises steps for determining LCP link parameter, determining whether authentication should be applied, determining the authentication method.
  • the interworking unit sends a PPP auth-request to the TE for user identity request in step S2408, and the TE sends user identity to the interworking unit via a PPP auth-response for selection of the NSP included in the DSL network in step S2410.
  • the user identity may include a NSP domain name of the DSL network selected by user, an IP address of the LNS, and security stuffs for PPP authentication.
  • the interworking unit may obtain the NSP domain name of the DSL network from the user identity.
  • step of S2412 the interworking unit initiates a L2TP tunnel/session establishment with the LNS included in the NSP of the DSL network for PPP authentication.
  • it is recommendable for the interworking unit to use per-LNS L2TP tunnel.
  • the interworking unit receives the user identity from the TE.
  • the user identity may be provisioned in the interworking unit or provided by the AAA of mobile communication network during S2400 when there is only the one NSP of the DSL network to choose.
  • the interworking unit does not need to trigger the PPP auth-request for the user identity request.
  • step S2408 and S2409 may be omitted, the step S2412 may be performed before the step S2406, and thus, the step S2406 is directly performed between the TE and the LNS.
  • a PPP authentication procedure is performed between the TE and the LNS.
  • the PPP authentication procedure may be performed using any one of PAP (Password Authentication Protocol), CAHP (Challenge Handshake Authentication Protocol), or EAP (Extensible Authentication Protocol) over PPP.
  • PAP Password Authentication Protocol
  • CAHP Challenge Handshake Authentication Protocol
  • EAP Extensible Authentication Protocol
  • IP Control Protocol Internet Protocol Control Protocol
  • the TE obtains the IP address and IP configurations from the LNS during the IPCP negotiation procedure.
  • the PPP IPCP negotiation procedure is performed when the access to the DSL network is accepted through the PPP authentication.
  • the PPP IPCP negotiation procedure may be performed without acceptance of the access to the DSL network.
  • the IPCP negotiation procedure may be directly performed after the PPP authentication procedure.
  • FIG. 25 illustrates the operating procedure of the control plane for the interworking method between the mobile communication network and the DSL network according to the second embodiment of the present invention.
  • the operating procedure of control plane of FIG. 25 can be applied when the CS in the MS 114 is ETH-CS, the data receiving-transmitting protocol between the mobile communication network 102 and the DSL network 104 is PPPoE, and the interworking unit and visiting AAA are included in the CSN.
  • the MS of the mobile communication network performs the network entry procedure and the initial authentication procedure in step S2500a.
  • the authentication procedure for the DSL network of the corresponding MS between the visiting AAA and the home AAA included in the NSP of the DSL network can be performed together with the authentication procedure of the MS for the mobile communication network so as to perform the authentication procedure of the corresponding MS for the DSL network in step S2500b. That is, the visiting AAA for the authentication of the MS for the DSL network performs the proxy function.
  • the SFA included in the ASN-GW initiates the initial service flow establishment with the mobile station through the use of classification rule information for ETH-CS in step S2502a.
  • the path can be established between the ASN-GW and the interworking unit included in the CSN in step of S2502b.
  • step S2504 the TE performs the PPPoE session establishment with the interworking unit included in the CSN, so as to transmit the PPP packet through the Ethernet.
  • the interworking unit performs the PPP LCP negotiation procedure with TE in step S2506 and performs the PPP authentication procedure with TE in step S2508a.
  • the PPP authentication may be performed by the PAP or CAHP method.
  • the interworking unit initiates the L2TP session establishment with the LNS included in the NSP of DSL network in step S2510. In one embodiment of the present invention, it is recommendable that the interworking unit uses per-LNS L2TP tunnel.
  • the PPP IPCP negotiation procedure is performed between the TE and the LNS of DSL network in step S2512, whereby the TE obtains the IP address and IP configuration from the LNS during the PPP IPCP negotiation procedure.
  • the L2TP session establishment is performed when the access through the PPP authentication is accepted from the DSL network.
  • the L2TP session establishment can be performed only by completion of the PPP authentication through the PPP authentication procedure, if there is no access request from the DSL network.
  • FIG. 26 illustrates the operating procedure of the control plane for the interworking method between the mobile communication network and the DSL network according to the third embodiment of the present invention.
  • control plane of FIG. 26 can be applied when the CS in the MS 114 is the ETH-CS, the data receiving-transmitting protocol between the mobile communication network 102 and the DSL network 104 is the IP, and the interworking unit is separated from the ASN-GW or CSN.
  • the MS performs the network entry procedure and the initial authentication procedure with the AAA server in the mobile communication network in step S2600a.
  • DSL network of the corresponding MS between the AAA server of the mobile communication network and the AAA server of the DSL network can be performed together with the authentication procedure of the MS for the mobile communication network so as to perform the authentication procedure of the corresponding MS for the DSL network in step S2600b. That is, the AAA server of the mobile communication network performs the proxy function for authentication of the corresponding MS for the DSL network.
  • the SFA included in the ASN-GW initiates the initial service flow establishment with the mobile station through the use of classification rule information for the ETH-CS in step S2602a.
  • the interworking unit is separated from the ASN-GW, it is necessary to perform the additional procedure for establishing the tunnel between the interworking unit and the ASN-GW in step S2602b.
  • the TE directly performs the DHCP procedure with the DHCP server of the DSL network in step S2604, and the TE is provided with the IP address and IP configuration in the DSL network from the DHCP server through the DHCP procedure.
  • FIG. 27 illustrates the operating procedure of the control plane for the interworking method between the mobile communication network and the DSL network according to the third embodiment of the present invention.
  • the operating procedure of control plane of FIG. 27 can be applied when the CS in the MS 114 is the ETH-CS, the data receiving-transmitting protocol between the mobile communication network 102 and the DSL network 104 is the IP, and the interworking unit and visiting AAA are included in the CSN.
  • control plane of FIG. 27 is identical in operating procedure to the control plane of FIG. 26. Thus, the detailed explanation about FIG. 27 will be omitted.
  • FIG. 28 illustrates the operating procedure of the control plane for the interworking method between the mobile communication network and the DSL network according to the fifth embodiment of the present invention.
  • control plane of FIG. 28 can be applied when the CS in the MS 114 is the IP-CS, the data receiving-transmitting protocol between the mobile communication network 102 and the DSL network 104 is the IP, and the interworking unit is separated from the ASN-GW or CSN.
  • the MS performs the network entry procedure and the initial authentication procedure with the AAA in the mobile communication network in step S2800a.
  • the mobile communication network is the WiMAX network
  • the MS performs the initial authentication procedure and network entry procedure based on 802.16e with the AAA server of WiMAX network.
  • a user profile should include an indication to indicate that the corresponding user should be connected with the DSL network.
  • DSL network of the corresponding MS between the AAA server of the mobile communication network and the AAA server of the DSL network can be performed together with the authentication procedure of the MS for the mobile communication network so as to perform the authentication procedure of the corresponding MS for the DSL network in step S2800b. That is, the AAA server of the mobile communication network performs the proxy function for authentication of the corresponding MS for the DSL network. This authentication of the MS for the DSL network can be delegated to the AAA server of the mobile communication network so that the authentication procedure for the DSL network can be included optionally.
  • the SFA included in the ASN-GW initiates the initial service flow establishment with the mobile station through the use of classification rule information for the IP-CS in step S2802a.
  • the interworking unit is separated from the ASN-GW, it is necessary to perform the additional procedure for establishing the tunnel between the interworking unit and the ASN-GW in step S2802b.
  • the TE initiates an IP acquisition procedure with the ASN-GW in step S2804a. That is, the TE obtains the IP address in the DSL network through the IP acquisition procedure with the ASN-GW.
  • the IP acquisition procedure may be performed by the DHCP procedure.
  • the ASN-GW obtains the IP address from the DHCP server of the DSL network through the interwork with the DHCP server included in the DSL network in step S2805b. That is, the ASN-GW is provided with the IP address from the DHCP server included in the DSL network through the use of DHCP proxy or DHCP relay function.
  • the IP address allocation can be delegated to the ASN or CSN of the mobile communication network by the DSL network.
  • the ASN-GW provides the DHCP proxy or DHCP relay function without any interworking with the NSP of the DSL network.
  • the DHCP server which can be located in the CSN, previously reserves the IP address for interworking with the DSL network, and provides the IP address to the ASN-GW.
  • the IP address may be pre- configured in the AAA server of the mobile communication network.
  • FIG. 29 illustrates the operating procedure of the control plane for the interworking method between the mobile communication network and the DSL network according to the sixth embodiment of the present invention.
  • the operating procedure of control plane of FIG. 29 can be applied when the CS in the MS 114 is the IP-CS, the data receiving-transmitting protocol between the mobile communication network 102 and the DSL network 104 is the IP, and the interworking unit and visiting AAA are included in the CSN.
  • FIG. 30 illustrates the operating procedure of the control plane for the interworking method between the mobile communication network and the DSL network according to the seventh embodiment of the present invention.
  • the operating procedure of control plane of FIG. 30 can be applied when the CS in the MS 114 is the IP-CS, the data receiving-transmitting protocol between the mobile communication network 102 and the DSL network 104 is the PPP, and the interworking unit is separated from the ASN-GW or CSN. That is, the operating procedure of the control plane shown in FIG. 30 can be applied when the TE 116 does not support the PPP.
  • the MS performs the network entry procedure and the initial authentication procedure with the AAA in the mobile communication network in step S3000a. If the mobile communication network is the WiMAX network, the MS performs the initial authentication procedure and network entry procedure based on 802.16e with the AAA server of WiMAX network.
  • the AAA server of the mobile communication network can download the subscriber profile to the interworking unit.
  • the subscriber profile may include the NSP domain name of DSL network, an IP address of the LNS, and the security stuffs for PPP authentication.
  • the SFA included in the ASN-GW initiates the initial service flow establishment with the mobile station through the use of classification rule information for the IP-CS in step S3002a.
  • the interworking unit is separated from the ASN-GW, it is necessary to perform the additional procedure for establishing the tunnel between the interworking unit and the ASN-GW in step S3002b.
  • the interworking unit initiates the L2TP session establishment with the LNS included in the NSP of the DSL network according to IP address of the LNS or NSP FQDN of the DSL network provided from the AAA server of the mobile communication network in step S3004.
  • the interworking unit can obtain the IP address of the LNS from the AAA server of the mobile communication network in S2900.
  • the IP address is previously provided in the interworking unit.
  • the interworking unit performs the PPP LCP negotiation procedure with the LNS in step S3006 and performs the PPP authentication procedure with the LNS in step S3008a so as to establish the PPP session.
  • the interworking unit performs the PPP IPCP negotiation procedure with the LNS in step S3010. In this case, during the PPP IPCP negotiation procedure, the interworking unit obtains the IP address in the DSL network from the LNS included in the NSP of the DSL network.
  • the PPP authentication procedure and the procedure for access to the DSL network can be included optionally.
  • steps S3004 to S3010 are performed after initiating the initial service flow establishment.
  • the steps S3004 to S3010 can be performed parallel to the step S3002a.
  • the TE initiates an IP acquisition procedure with the ASN-GW to obtain the IP address and IP configuration in the DSL network, which is obtained in the interworking unit by the PPP IPCP negotiation procedure in step S3012a.
  • the TE can obtain the IP address through the DHCP procedure.
  • the TE can obtain the IP address through the MIP method.
  • the interworking unit is separately provided from the ASN-GW, the additional procedure for obtaining the IP address and IP configuration can be performed between the interworking unit and the ASN-GW in step S3012b, and the ASN-GW can provide the IP address and IP configuration obtained from the interworking unit to the TE.
  • the IP address spaces of NSP of the different DSL networks may be overlapped.
  • the interworking unit is located in the ASN-GW, the interworking unit should distinguish the NSP of the DSL network by the L2TP tunnel for the downlink traffic.
  • a mobile communication network 3102 is accessed an interface node 3121 which connects between a BRAS 3124 and a DSLAM 3125 of a DSL network 3104 via an interworking unit 3134.
  • the interface node 3121 means an Ethernet aggregation node in an access network.
  • the interworking between the mobile communication network 3102 and the interface node 3121, explained with reference to FIG. 31, may be referred to as V interface interworking.
  • FIG. 32 illustrates a protocol stack for the interworking method between the mobile communication network and the DSL network according to the eighth embodiment of the present invention.
  • the protocol stack shown in FIG. 32 may be the protocol stack for the integrated interworking unit 3134 and CSN 3106.
  • the BRAS 3124 creates a PPP packet by encapsulating an IP packet in a PPP layer and creates a PPPoE frame by adding a PPPoE header to the PPP packet in a PPPoE layer. After that, the BRAS 3124 creates an Ethernet frame by adding an Ethernet frame header including an Ethernet address of the MS 3114 to the PPPoE frame in an Ethernet layer, and then transmits the Ethernet frame to the interworking unit 3124 via a physical layer.
  • the BRAS 3124 creates the Ethernet frame by adding an Ethernet frame header including the Ethernet address of the MS 3114 to the IP packet in Ethernet layer, and then transmits the Ethernet frame to the interworking unit 3124 via a physical layer.
  • the interworking unit 3134 finds a GRE Key mapped to the Ethernet address of the TE 3116 and adds a GRE header including the found GRE Key to the Ethernet frame in a GRE layer when the Ethernet frame is received from the BRAS 3124. After that, the interworking unit 3134 adds an IP header to the Ethernet frame with the GRE header in an IP layer and transmits the Ethernet frame with the GRE and IP headers to a corresponding ASN-GW via link and physical layers.
  • the ASN-GW obtains the Ethernet frame from the received Ethernet frame with the GRE and IP headers by the reverse order of the aforementioned steps performed in the protocol stacks 3204a and 3204b of the interworking unit 3134. After that, the ASN-GW determines a data path tag mapped to the Ethernet address of TE 3116 and a BS, and then encapsulates the Ethernet frame by adding the data path tag and an IP header corresponding to the determined BS to the Ethernet frame in a DP (Data Path) layer. Then, the ASN-GW transmits the Ethernet frame with the data path tag and IP header to the BS through a tunnel designated by the data path tag via link and physical layers.
  • the data path tag may be the GRE key mapped to the Ethernet address of TE the 3116.
  • the BS obtains the Ethernet frame from the received Ethernet frame with the data path tag and the IP header by the reverse order of the aforementioned steps performed in the protocol stacks 3206a and 3206b of the ASN-GW. Then, the BS adds a CID mapped to the data path tag to the Ethernet frame using the ETH-CS and transmits the Ethernet frame with the CID to the MS 3114 corresponding to the CID through a lower layer of IEEE 802.16.
  • the MS 3114 obtains the Ethernet frame from the received Ethernet frame with the CID by the reverse order of the aforementioned steps performed in the protocol stacks 3208a of the BS, and then transmits the Ethernet frame to the TE 3116 via a physical layer.
  • the TE 3116 receives the Ethernet frame from the MS 3114 and obtains the PPP packet by removing the Ethernet and PPPoE headers from the received Ethernet frame. Then, the TE 3116 obtains a desired data from the PPP packet by removing a PPP header from the PPP packet.
  • the MS 3114 obtains the Ethernet frame from the received Ethernet frame with the CID by the reverse order of the aforementioned steps performed in the protocol stacks 3208b of the BS, and then transmits the Ethernet frame to the TE 3116 via a physical layer.
  • the TE 3116 receives the Ethernet frame from the MS 3114, and then obtains the IP packet from the received Ethernet frame.
  • the aforementioned eighth embodiment of the present invention describes the in- terworking method used for transmitting the downlink data from the BRAS 3124 to the TE 3116 through the protocol stack structure shown in FIG. 32, wherein the in- terworking method for transmitting the uplink data can be performed by the reverse order of the aforementioned steps, whose detailed explanation is omitted.
  • FIG. 33 illustrates the flow chart of the downlink data traffic process for the interworking method between the mobile communication network and the DSL network according to the eighth embodiment of the present invention.
  • step of S3300 the interworking unit receives an Ethernet frame including a PPPoE frame or an IP packet from the BRAS of the DSL network. After that, the interworking unit finds a GRE Key mapped to the TE in step S3302, adds a GRE header including the found GRE key and an IP header to the Ethernet frame in step S3304, and then transmits the Ethernet frame with the GRE and IP headers in step S3306.
  • the ASN-GW decapsulates the Ethernet frame with the GRE and IP headers by removing the GRE and IP header from the received Ethernet frame with the GRE and IP headers in step S3308, and then determines a data path tag mapped to the Ethernet address of the TE and the BS in step S3310. After that, the ASN-GW adds the data path tag and an IP header to the Ethernet frame, and then transmits the Ethernet frame with the data path tag and IP header to the BS through a tunnel designated by the data path tag in step S3312.
  • the data path tag may be the GRE Key mapped to the Ethernet address of the TE.
  • step S3314 the BS decapsulates the Ethernet frame with the data path tag and IP header by removing the data path tag and IP header from the received Ethernet frame, and then determines a CID based on the data path tag. After that, the BS adds the determined CID to the Ethernet frame and transmits the Ethernet frame with the CID to the MS corresponding to the CID in step S3316.
  • the MS forwards the Ethernet frame received through the ETH-CS to the TE in step S3318.
  • the TE obtains a desired data from the received Ethernet frame in step S3320.
  • the TE obtains the desired data by removing a PPPoE header from the received Ethernet frame when the PPPoE header is included in the received Ethernet frame, and TE obtains the IP packet from the received Ethernet frame when the IP packet is included in the received Ethernet frame.
  • FIG. 34 illustrates the flow chart of the uplink data traffic process for the in- terworking method between the mobile communication network and the DSL network according to the eighth embodiment of the present invention.
  • step S3400 the TE sends an Ethernet frame including a PPPoE frame or IP packet to the MS.
  • the MS determines a CID in step S3402.
  • step S3404 the MS adds the determined CID to the Ethernet frame and transmits the Ethernet frame with the CID to the BS using an ETH-CS.
  • step S3406 the BS determines a data path tag and the ASN-GW based on the CID. Then, in step S3408, the BS adds the data path tag to the Ethernet frame and transmits the Ethernet frame with the data path tag to the determined ASN-GW through a tunnel designated by the data path tag.
  • the ASN-GW decapsulates the Ethernet frame with the data path tag by removing the data path tag from the received Ethernet frame in step S3409. Then, the ASN-GW encapsulates the Ethernet frame by adding a GRE header to the Ethernet frame for GRE tunneling and transmits the Ethernet frame with the GRE header to the interworking unit in step S3410.
  • the interworking unit removes the GRE header from the Ethernet frame with the GRE header in step S3412, and then transmits the Ethernet frame to the BRAS in step S3414.
  • FIG. 35 illustrates the protocol stack for the interworking method between the mobile communication network and the DSL network according to the ninth embodiment of the present invention.
  • the protocol stack shown in FIG. 35 is the protocol stack for transmitting the Ethernet frame extended to a VLAN frame in the BRAS.
  • the BRAS 3124 creates a PPP packet by encapsulating an IP packet in a PPP layer and encapsulates the PPP packet to a PPPoE frame for being used the PPP packet as a data field in a PPPoE layer.
  • the BRAS 3124 creates an Ethernet frame including an Ethernet address of the MS 3114 and the PPPoE frame as data field in an Ethernet frame in a Ethernet layer. Then, the BRAS 3124 extends the Ethernet frame to the VLAN frame according to IEEE 802. lad in a VLAN layer and transmits the VLAN frame to the interworking unit 3134 via a physical layer.
  • a protocol stack 3502b of the BRAS 3124 when the data receiving- transmitting protocol is IP in the GRE layer, the BRAS 3124 creates the Ethernet frame using the IP packet created in an IP layer.
  • the Ethernet frame does not include the PPPoE frame because the IP packet does not pass through the PPP layer.
  • the BRAS 3124 extends the Ethernet frame to the VLAN frame according to IEEE 802. lad in a VLAN layer and transmits the VLAN frame to the interworking unit 3134 via a physical layer.
  • the interworking unit 3134 obtains the Ethernet frame from the VLAN frame by the reverse order of the aforementioned steps performed in the protocol stacks 3502a and 3502b of the BRAS 3124. Then, the interworking unit 3134 transmits the Ethernet frame to the ASN-GW mapped to an Ethernet address of the MS 3114.
  • the information about the mapping relationship between the ASN-GW and the Ethernet address of the MS 3114 may be previously stored in the interworking unit 3134 included in the CSN 3106.
  • the transmission of the Ethernet fame from the interworking unit 3134 to the ASN-GW may be performed using an Ethernet transmission, an IP transmission, or transmission through a GRE tunnel.
  • the ASN-GW determines a data path tag mapped to the Ethernet address of the TE and the BS, and then encapsulates the Ethernet frame by adding the data path tag to the Ethernet frame in a GRE layer after receiving the Ethernet frame from the interworking unit 3134.
  • the data path tag may be a GRE Key mapped to the Ethernet address of the TE.
  • the ASN-GW adds an IP header to the Ethernet frame with the data path tag, and then the Ethernet frame with the data path tag and the IP header to the determined BS through a tunnel designated by the data path tag via link and physical layers.
  • the aforementioned ninth embodiment of the present invention describes the in- terworking method used for transmitting the downlink data from the BRAS 3124 to the TE 3116 through the protocol stack structure shown in FIG. 35, wherein the in- terworking method for transmitting the uplink data can be performed by the reverse order of the aforementioned steps, whose detailed explanation is omitted.
  • FIG. 36 illustrates the flow chart of the downlink data traffic process for the interworking method between the mobile communication network and the DSL network according to the ninth embodiment of the present invention.
  • the interworking unit receives an Ethernet frame extended to a VLAN frame from the BRAS of the DSL network through a use of IPoE or PPPoE as data receiving-transmitting protocol.
  • the interworking unit may be included in the CSN.
  • the interworking unit finds an Ethernet address of the TE using the Ethernet frame, finds the corresponding ASN-GW using information about mapping relationship between the Ethernet address of the TE and the ASN-GW, and transmits the Ethernet frame to the founded ASN-GW in step S3602.
  • the mapping information may be previously stored in the interworking unit.
  • the ASN-GW determines a data path tag mapped to the Ethernet address of the TE and the BS in step S3604. After that, in step S3606, the ASN-GW adds the data path tag to the Ethernet frame, and then transmits the Ethernet frame with the data path tag to the determined BS through a tunnel designated by the data path tag after encapsulating the Ethernet frame through use of IP/GRE/ETH as protocol stacks.
  • the data path tag may be the GRE key mapped to the Ethernet address of the TE.
  • step S3608 the BS decapsulates the received Ethernet frame and determines a CID mapped to the data path tag. Then, the BS transmits the Ethernet frame with the CID to the MS corresponding to the CID in step S3610.
  • the MS forwards the Ethernet frame received through an ETH-CS to the TE in step S3612, and then the TE obtains a desired data from the received Ethernet frame.
  • FIG. 37 illustrates the flow chart of the uplink data traffic process for the interworking method between the mobile communication network and the DSL network according to the ninth embodiment of the present invention.
  • the TE sends an Ethernet frame using PPPoE or IPoE to the MS.
  • the MS determines a CID in step S3702 and transmits the Ethernet frame with the CID to the BS corresponding to the determined CID based on the ETH-CS in step S3704.
  • the BS determines a data path tag and the ASN-GW based on the CID in step S3706 after receiving the Ethernet from the MS. After that, the BS adds the data path tag to the Ethernet frame, encapsulates the Ethernet frame through use of ETH/GRE/IP as protocol stacks, and then transmits the encapsulated Ethernet frame to the determined ASN-GW through a tunnel designated by the data path tag in step S3708.
  • step S3710 the ASN-GW decapsulates the encapsulated Ethernet frame, extends the Ethernet frame to a VLAN frame, and then transmits the Ethernet frame extended to the VLAN frame to the interworking unit.
  • the interworking unit may be included in the CSN of the mobile communication network.
  • the interworking unit transmits the Ethernet frame extended to the VLAN frame to the BRAS in step S3712.
  • the interworking method between the mobile communication network and the DSL network according to the tenth embodiment of the present can be applied when the CS type of MS is an IP-CS, the data receiving-transmitting protocol between the mobile communication network and the DSL network is the PPP.
  • the interworking method between the mobile communication network and the DSL network according to the tenth embodiment of the present is applicable when the MS does not support the PPP.
  • the interworking unit establishes a PPP session with the BRAS included in the NSP of the DSL network on behalf of the MS by performing proxy function.
  • FIG. 38 illustrates the protocol stack for the interworking method between the mobile communication network and the DSL network according to the tenth embodiment of the present invention.
  • the protocol stack shown in FIG. 38 may be the protocol stack for the integrated the interworking unit 3134 and CSN 3106.
  • the BRAS 3124 creates a PPP packet by encapsulating an IP packet in a PPP layer and creates a PPPoE frame by adding a PPPoE header to the PPP packet in a PPPoE layer. After that, the BRAS 3124 creates an Ethernet frame by adding an Ethernet header including an Ethernet address of the MS 3114 to the PPPoE frame in a Ethernet layer, and then transmits the Ethernet frame to the interworking unit via a physical layer.
  • the interworking unit 3134 obtains the IP packet from the received Ethernet frame by the reverse order of the aforementioned steps performed in the protocol stack 3802 of the BRAS 3124. After that, the interworking unit 3134 determines a GRE Key mapped a service flow of the IP packet and adds a GRE header including the determined GRE Key to the IP packet in a GRE layer. Then, the interworking unit 3134 adds an IP header in an IP layer to the IP packet and transmits the IP packet with the GRE and IP headers to the corresponding ASN-GW via link and physical layers.
  • the ASN-GW obtains the IP packet from the received IP packet by the reverse order of the aforementioned steps performed in the protocol stack 3804 of the interworking unit 3134. After that, the ASN-GW determines a data path tag mapped to a service flow of the IP packet and the BS. Then, the ASN-GW adds the data path tag and an IP header corresponding to the determined BS to the IP packet, and then transmits the IP packet with the data path tag and IP header to the BS through a tunnel designated by the data path tag via link and physical layers.
  • the data path tag may be a GRE Key mapped to the service flow.
  • the BS obtains the IP packet from the received IP packet by the reverse order of the aforementioned steps performed in the protocol stack 3806 of the ASN-GW. After that, the BS adds a CID mapped to the data path tag to the IP packet using an IP-CS, and then transmits the IP packet with the CID to the MS corresponding to the CID through a lower layer of IEEE 802.16.
  • the MS 3114 transmits the IP packet received from the BS to the TE, and then the TE 3116 obtains a desired data by receiving the IP packet.
  • the aforementioned tenth embodiment of the present invention describes the interworking method used for transmitting the downlink data from the BRAS 3124 to the TE 3116 through the protocol stack structure shown in FIG. 38, wherein the interworking method for transmitting the uplink data can be performed by the reverse order of the aforementioned steps, whose detailed explanation is omitted.
  • FIG. 39 illustrates the flow chart of the downlink data traffic process for the interworking method between the mobile communication network and the DSL network according to the tenth embodiment of the present invention.
  • step S3900 the interworking unit receives an Ethernet frame including a PPPoE frame from the BRAS of the DSL Network. After that, the interworking unit obtains an IP packet by removing PPPoE and PPP headers from the Ethernet frame in step S3902, and then finds a GRE Key mapped to the TE in step S3904. Then, the interworking unit adds a GRE header including the GRE Key and an IP header to the IP packet in step S3906 and transmits the IP packet with the GRE and IP headers to the ASN-GW in step S3908.
  • the ASN-GW decapsulates the received IP packet by removing the GRE and IP headers from the received IP packet in step S3910, and then determines a data path tag mapped to a service flow the IP packet and the BS in step S3912. After that, the ASN- GW adds the data path tag to the IP packet and transmits the IP packet with the data path tag to the determined BS through a tunnel designated by the data path tag in step S3914.
  • the data path tag may be the GRE Key mapped to the service flow.
  • the BS decapsulates the received IP packet by removing the data path tag from the received IP packet, and then determines a CID based on the data path tag in step S3916. After that, the BS adds the determined CID to the IP packet and transmits the IP packet with the CID to the MS corresponding to the CID in step S3918.
  • the MS forwards the IP packet received from the BS through IP-CS to the TE in step S3920, and then the TE obtains a desired data by receiving the IP packet in step S3922.
  • FIG. 40 illustrates the flow chart of the uplink data traffic process for the interworking method between the mobile communication network and the DSL network according to the tenth embodiment of the present invention.
  • step S4000 the TE sends an IP packet to the MS. Then, the MS determines a CID in step S4002. After that, the MS adds the determined CID to the IP packet and transmits the IP packet with the CID to the BS corresponding to the CID through an IP-CS in step S4004.
  • the BS determines a data path tag and the ASN-GW based on the CID in step S4006 after receiving the IP packet with the CID. After that, the BS adds the data path tag to the IP packet and transmits the IP packet with the data path tag to the determined ASN-GW through a tunnel designated by the data path tag in step S4008.
  • the ASN-GW determines a GRE tunnel mapped to the IP packet after removing the data path tag from the received IP packet in step S4009. Then, in step S4010, the ASN-GW encapsulates the IP packet by adding a GRE header to the IP packet for tunneling the IP packet to the determined GRE tunnel, and then transmits the IP packet with the GRE header to the interworking unit.
  • the interworking unit removes the GRE header from the IP packet with the GRE header in step S4012, and then the interworking unit creates a PPP packet by adding a PPP header to the IP packet after determining a PPP session mapped to the IP packet in step S4014. After that, the interworking unit creates a PPPoE frame by adding a PPPoE header to the PPP packet in step S4016, and then transmits an Ethernet frame including the PPPoE frame to the BRAS in step S4018.
  • control plane of FIG. 41 can be applied when the data receiving-transmitting protocol between the TE and the DSL network is the PPP, the CS of the MS 3114 is the ETH-CS, and the interworking unit and visiting AAA are included in the CSN.
  • the MS performs the network entry procedure and the initial authentication procedure with the AAA server in the mobile communication network in step S4100.
  • the SFA included in the ASN-GW initiates the initial service flow establishment with the MS through the use of classification rule information for ETH-CS in step S4102a.
  • the interworking unit is separated from the ASN-GW, it is necessary to perform the additional procedure for establishing the tunnel between the interworking unit and the ASN-GW in step S4102b.
  • the TE performs a PPPoE session establishment with the BRAS so as to transmit a PPP packet through an Ethernet in step S4104.
  • the TE performs a PPP LCP negotiation procedure with the BRAS in step S4106.
  • the PPP LCP negotiation procedure comprises procedures for determining LCP link parameter, determining whether authentication should be applied, determining the authentication method.
  • the TE performs a PPP authentication procedure with the BRAS in step
  • the PPP authentication procedure may be performed by any one of PAP, CAHP, or EAP over PPP.
  • the TE After that, if the access to the DSL network through the PPP authentication is accepted in step S4108b, the TE performs a PPP IPCP negotiation procedure with the BRAS in step S4110. During the PPP IPCP negotiation procedure, the TE is provided with the IP address and IP other configuration in the DSL network from the BRAS. [333]
  • the operating procedure of control plane of FIG. 42 can be applied when the data receiving-transmitting protocol between the TE and the DSL network is the IP, the CS of the MS 3114 is the ETH-CS, and the interworking unit and visiting AAA are included in the CSN.
  • the MS performs the network entry procedure and the initial authentication procedure with the AAA server in the mobile communication network in step S4200.
  • the SFA included in the ASN-GW initiates the initial service flow establishment with the MS through the use of classification rule information for ETH-CS in step S4202a.
  • the interworking unit is separated from the ASN- GW, it is necessary to perform the additional procedure for establishing the tunnel between the interworking unit and the ASN-GW in step S4202b.
  • TE performs the authentication procedure using the EAP over LAN (EAPoL) authentication method with the BRAS in step S4204a. If the access to the DSL network through the authentication procedure is accepted in step S4204b, the TE is provided with the IP address and IP configuration of the DSL network from the BRAS.
  • EAPoL EAP over LAN
  • the aforementioned embodiment of the present invention includes the procedure for access to the DSL network. However, the procedure for access to the DSL network may be included optionally. Accordingly, in this case, the IP address and IP configuration can be provided with completion of the authentication procedure through the EAPoL authentication procedure.
  • the operating procedure of control plane of FIG. 43 can be applied when the data receiving-transmitting protocol between the TE and the DSL network is the PPP, the CS of the MS 3114 is the ETH-CS, and the interworking unit and visiting AAA are included in the CSN.
  • the operating procedure of control plane of FIG. 44 can be applied when the data receiving-transmitting protocol between the TE and the DSL network is the IP, the CS in the MS 3114 is the ETH-CS, and the interworking unit and visiting AAA are included in the CSN.
  • the MS performs the network entry procedure and the initial authentication procedure with the AAA server in the mobile communication network in step S4400a.
  • the authentication procedure for the DSL network of the corresponding MS between the visiting AAA and the home AAA included in the DSL network can be performed together with the authentication procedure of the MS for the mobile communication network so as to perform the authentication procedure of the corresponding MS for the DSL network in step S4400b. That is, the visiting AAA for the authentication of the MS for the DSL network performs the proxy function.
  • the SFA included in the ASN-GW initiates the initial service flow establishment with the MS through the use of classification rule information for ETH-CS in step S4402a.
  • the procedure for establishing the path between the ASN-GW and the BRAS of the DSL network can be additionally performed in step S4402b.
  • the TE performs the DHCP procedure with a DHCP server of the DSL network in step S4404.
  • the TE can be provided with the IP address and IP configuration in the DSL network from the DHCP server.
  • the MS performs the network entry procedure and the initial authentication with the AAA in the mobile communication network in step S4500.
  • the AAA of the mobile communication network can download the subscriber profile to the interworking unit.
  • the subscriber profile may include the NSP domain name of the DSL network, the BRAS identifier, and the security stuffs for PPP authentication.
  • the SFA included in the ASN-GW initiates the initial service flow establishment with the MS through the use of classification rule information for IP-CS in step S4502a. In this case, it may necessary to perform the additional procedure for establishing the tunnel between the interworking unit and the ASN-GW in step S4502b.
  • the interworking unit initiates a PPPoE session establishment with the BRAS of the DSL network so as to transmit a PPP packet through an Ethernet in step S4504.
  • the interworking unit performs a PPP LCP ne- gotiation procedure with the BRAS behalf on the TE in step S4506, and also performs a PPP authentication procedure with the BRAS behalf on the TE in step S4508a. Then, if the access to the DSL network through the PPP authentication is accepted in step S4508b, the interworking unit performs a PPP IPCP negotiation procedure with the LNS behalf on the TE in step S4510.
  • the TE initiates an IP acquisition procedure with the interworking unit to obtain an IP address and IP configuration in the DSL network, which is obtained in the interworking unit by the PPP IPCP negotiation procedure, in step S4512.
  • the IP acquisition procedure may use the DHCP or MIP method.
  • the access and authentication procedure for the mobile communication network in the operating procedure of control plane for the interworking method between the mobile communication network and the DSL network according to the first to tenth embodiments of the present invention can be schematized as FIG. 46.
  • the home AAA included in the DSL network related with the authentication of the MS provides the EAP authentication for the successful access, and also provides the authentication results and the information shown in FIG. 47 to the visiting AAA included in the mobile communication network.
  • FIG. 47 illustrates RASIUS message format received and transmitted between the ASN and the visiting AAA.
  • CS-Type defines the CS type for which the MS is authorized
  • DSL-SVC-Type defines the DSL-SVC type that the MS is authorized for.
  • RRAS-ID defines the ASN IP service capability
  • DSL- NSP-GW ID defines the V-CSN IP service capability.
  • hDHCPv4-server defines the IPv4 address of DHCP server of H-CSN used for proxy mobile IPv4 and simple IPv4
  • hDHCPv ⁇ -Server defines the IPv6 an IPv4 address of DHCP server of H- CSN used for proxy mobile IPv6 and simple IPv6.
  • the PPP authentication and IP acquisition procedure in the operating procedure of control plane for the interworking method between the mobile communication network and the DSL network according to the first and second embodiments of the present invention can be schematized to FIG. 48.
  • the PPP authentication and IP acquisition procedure in the operating procedure of control plane for the interworking method between the mobile communication network and the DSL network according to the eighth and ninth embodiments of the present invention can be schematized to FIG. 49.
  • the aforementioned interworking method between the mobile communication network and the DSL network can be implemented in a program command type executed by various computers, and can be recorded in computer-readable record media.
  • the computer-readable record media may include the program command, data file, and data architecture.
  • the program command recorded in the record media may be especially designed for the present invention, or may be used for those who are in a computer-software field.
  • the computer-readable record media include a hardware especially designed to store and execute the program command, for example, magnetic media such as hard disk, floppy disk and magnetic tape, optical media such as CD-ROM and DVD, magneto- optical media such as floptical disk, ROM, RAM, flash memory, and etc.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Computer Hardware Design (AREA)
  • Computing Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

L'invention concerne un procédé d'interfonctionnement entre un réseau de communication mobile et un réseau DSL pour fournir un service DSL à un terminal du réseau de communication mobile. Ledit procédé peut permettre d'obtenir une procédure d'exploitation de plan de commande en fonction d'un noeud d'interface entre le réseau de communication mobile et un réseau DLS, un type de couche de convergence d'une station mobile, et un protocole d'émission-réception de données du réseau DLS, le procédé consistant à mettre en oeuvre des procédures d'authentification et d'enregistrement du terminal pour le réseau de communication mobile entre le terminal et un serveur AAA du réseau de communication mobile; et lorsqu'un flux de services initial est établi avec le terminal, à mettre en oeuvre une procédure d'authentification du terminal pour le réseau DSL par l'intermédiaire de l'utilisation d'une session PPPoE et d'une session PPP lorsqu'un protocole d'émission-réception entre le terminal et le réseau DSL est un protocole PPP (protocole noeud à noeud), et à mettre en oeuvre une procédure d'authentification du terminal pour le réseau DSL par l'intermédiaire de l'utilisation d'une procédure d'authentification basée sur le protocole 802.1x lorsque le protocole d'émmission-réception de données est un protocole IP.
PCT/KR2008/005591 2007-09-21 2008-09-21 Procédé d'interfonctionnement entre un réseau de communication mobile et un réseau de lignes d'abonnés numériques et système de communication mobile permettant de supporter ledit procédé WO2009038410A2 (fr)

Applications Claiming Priority (14)

Application Number Priority Date Filing Date Title
US99489707P 2007-09-21 2007-09-21
US60/994,897 2007-09-21
US98571107P 2007-11-06 2007-11-06
US60/985,711 2007-11-06
US1422807P 2007-12-17 2007-12-17
US61/014,228 2007-12-17
US2077908P 2008-01-14 2008-01-14
US61/020,779 2008-01-14
US2277308P 2008-01-22 2008-01-22
US61/022,773 2008-01-22
US2459408P 2008-01-30 2008-01-30
US61/024,594 2008-01-30
KR1020080091386A KR20090031257A (ko) 2007-09-21 2008-09-18 휴대 인터넷망과 ｄｓｌ망의 연동 방법 및 그 방법을 지원하는 휴대 인터넷 시스템
KR10-2008-0091386 2008-09-18

Publications (2)

Publication Number Publication Date
WO2009038410A2 true WO2009038410A2 (fr) 2009-03-26
WO2009038410A3 WO2009038410A3 (fr) 2009-05-14

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PCT/KR2008/005591 WO2009038410A2 (fr) 2007-09-21 2008-09-21 Procédé d'interfonctionnement entre un réseau de communication mobile et un réseau de lignes d'abonnés numériques et système de communication mobile permettant de supporter ledit procédé

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Country Link
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN104980292A (zh) * 2014-04-02 2015-10-14 中国电信股份有限公司 用户在线信息管理方法和系统
CN109450657A (zh) * 2019-01-15 2019-03-08 深圳联想懂的通信有限公司 一种智能物联网通信服务系统和方法

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JP2003244188A (ja) * 2002-02-21 2003-08-29 Nippon Telegr & Teleph Corp <Ntt> トンネル通信方法
JP2004040586A (ja) * 2002-07-04 2004-02-05 Ntt Fanet Systems Corp ＰＰＰｏＥ通信端末、その方法、そのプログラム及びそのプログラムを記録したコンピュータ読み取り可能な記録媒体
WO2006087619A1 (fr) * 2005-02-15 2006-08-24 Telefonaktiebolaget Lm Ericsson (Publ) Diffusion multidestinataire optimisee dans un reseau d'acces hybride a large bande de type pppoe/ipoe

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
JP2003244188A (ja) * 2002-02-21 2003-08-29 Nippon Telegr & Teleph Corp <Ntt> トンネル通信方法
JP2004040586A (ja) * 2002-07-04 2004-02-05 Ntt Fanet Systems Corp ＰＰＰｏＥ通信端末、その方法、そのプログラム及びそのプログラムを記録したコンピュータ読み取り可能な記録媒体
WO2006087619A1 (fr) * 2005-02-15 2006-08-24 Telefonaktiebolaget Lm Ericsson (Publ) Diffusion multidestinataire optimisee dans un reseau d'acces hybride a large bande de type pppoe/ipoe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104980292A (zh) * 2014-04-02 2015-10-14 中国电信股份有限公司 用户在线信息管理方法和系统
CN109450657A (zh) * 2019-01-15 2019-03-08 深圳联想懂的通信有限公司 一种智能物联网通信服务系统和方法
CN109450657B (zh) * 2019-01-15 2019-12-27 深圳联想懂的通信有限公司 一种智能物联网通信服务系统和方法

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