GTP for integration of multiple access
First Claim
1. A network system comprising:
- at least one core network,wherein each core network comprises a number of packet data gateway access supporting nodes (GASNs), handling mobile user station access over an access network,wherein said core network further provides access to one or more global packet data communication networks, and one or more nodes holding subscriber and/or mobile user station related information,wherein said packet data gateway access supporting nodes are adapted to;
assign an IP-address to accessing mobile user stations,have at least one access type dependent interface to at least one type of access network,support inter-communication over a mobility protocol interface,at reception of a request for change of access type from a mobile user station, establish information about the previous packet data gateway access supporting node of the mobile user station, anduse the established information to update an established communication context concerning the mobile user station or create a new communication context concerning the mobile user station such that mobility between different access network types is enabled for a mobile user station without interruption of an ongoing session, andin acting as a previous GASN, act as an anchor point for the user after a handover to another access network type, the mobility protocol being used to provide control signaling and user data tunneling between previous and new access support nodes,wherein at least one of said packet data gateway access supporting nodes is adapted to support access over more than one access network type, andwherein the intercommunication mobility protocol is Mobile Internet Protocol (MIP).
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Accused Products
Abstract
A network architecture comprising at least one core network, each core network comprising a number of packet data gateway access supporting nodes GASNs handling mobile user station access over an access network, said core network(s) further providing access to one or more global packet data communication networks (IN), and one or more nodes holding subscriber or mobile user station related information. The GASNs are further adapted to support intercommunication over a mobility protocol interface to, at reception of a request for change of access type from a mobile user station, establish information about the previous GASN of the mobile user station, and to, using the established information, update an established communication context concerning the mobile user station or create a new communication context concerning the mobile user station such that mobility between different access network types is enabled for a mobile user station without interruption of an ongoing session.
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Citations
19 Claims
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1. A network system comprising:
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at least one core network, wherein each core network comprises a number of packet data gateway access supporting nodes (GASNs), handling mobile user station access over an access network, wherein said core network further provides access to one or more global packet data communication networks, and one or more nodes holding subscriber and/or mobile user station related information, wherein said packet data gateway access supporting nodes are adapted to; assign an IP-address to accessing mobile user stations, have at least one access type dependent interface to at least one type of access network, support inter-communication over a mobility protocol interface, at reception of a request for change of access type from a mobile user station, establish information about the previous packet data gateway access supporting node of the mobile user station, and use the established information to update an established communication context concerning the mobile user station or create a new communication context concerning the mobile user station such that mobility between different access network types is enabled for a mobile user station without interruption of an ongoing session, and in acting as a previous GASN, act as an anchor point for the user after a handover to another access network type, the mobility protocol being used to provide control signaling and user data tunneling between previous and new access support nodes, wherein at least one of said packet data gateway access supporting nodes is adapted to support access over more than one access network type, and wherein the intercommunication mobility protocol is Mobile Internet Protocol (MIP). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A core network node comprising:
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a packet data gateway access supporting node handling mobile user station access over an access network and providing access to external global or local or third party controlled packet data communication networks, wherein it is adapted to be capable to assign IP addresses to accessing mobile user stations, wherein it has at least one access type dependent interface to at least one type of access network, wherein it has a mobility protocol interface supporting communication with other packet data gateway access supporting nodes, wherein it is adapted to establish information about which was the previous packet data gateway access supporting node for a mobile user station requesting access for establishing, or acquiring user or mobile user station related information, and wherein it further is adapted to, using the established user or mobile user station related information, update an established communication context concerning the mobile user station with the previous packet data gateway access supporting node or create a new communication context concerning the mobile user station, such that mobility between different access network types is enabled for a mobile user station requesting change of access type without interruption of or affecting an ongoing session or service, and wherein it is adapted to act at least as a local anchor point for a mobile user station having requested handover to another access network type, wherein the mobility protocol is used to provide control signaling and user data tunneling between previous and new access support nodes, wherein the core network node is adapted to support access over more than one access network type, and wherein the intercommunication mobility protocol is Mobile Internet Protocol (MIP). - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method for handling dual or multimode mobile user station access to a core network system comprising one or more core networks, said mobile user station having accessed the one or more core networks over an access network using a first access technology, wherein the method comprises the steps of:
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receiving an access request relating to access over a second or new access network in a second or new packet data gateway access supporting node, GASN, during an ongoing session, establishing, in the second or new packet data gateway access supporting node, information about the previous or first GASN over which the mobile user station previously was provided with access and allocated an IP address, using a mobility protocol or, using said information about the previous GASN, providing communication between said previous GASN and/or a home GASN of the mobile user station to update an existing, previous communication context, or set up a new communication context, keeping the previous GASN at least as a local anchor point, informing the mobile user station that access is provided over said second or new access network, and providing the mobile user station with access over the new, second, access network without interrupting or affecting the ongoing session, and keeping the same, allocated IP address, and using the mobility protocol to provide control signaling and tunneling of user data between the previous and new packet data gateway access support nodes, wherein at least one of said packet data gateway access supporting nodes is adapted to support access over more than one access network type, and wherein the intercommunication mobility protocol is Mobile Internet Protocol (MIP). - View Dependent Claims (18, 19)
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Specification