Abstract:
A registration method in a system having a hierarchical structure (100) that includes a mobile node (20), at least one FA (42), at least one GFA (40) and an HA (30). The method includes the steps of: intercepting (210) a registration request (300) from a mobile node to its HA, the registration request including a first care of address (360) for the mobile node; determining (220) whether there is an existing entry in a visitor list for the mobile node; if the entry exists, updating (230) the entry; if no entry exists, creating an entry (250) in the list for the mobile node, adding (260) a second care of address as an extension to the registration request, and sending (270) the registration request with the address extension to the HA; and sending (240) a registration reply to the mobile node.
Abstract:
A method is described for routing of data in hierarchical mobility management systems with tiered mobile anchor points. Routing of data is switched from old to new communications nodes and regulated, by a controlling mobile anchor point having both communications nodes in its domain, to occur synchronously with the expiry of a determined period following its receipt of a handover initiation signal. The main determinant of the period is the remaining time of attachment of the old communications node.
Abstract:
Methods and apparatus for processing registration requests by a Home Agent supporting Mobile IP are disclosed. A registration request is received from each of a plurality of Mobile Nodes, the registration request specifying a care-of address. A binding is established between each of the plurality of Mobile Nodes and the associated care-of address, each of the plurality of Mobile Nodes being associated with one another. For instance, the plurality of Mobile Nodes may be statically or dynamically assigned the same Home Address. A tunnel is then created between the Home Agent and the care-of address for each of the plurality of Mobile Nodes, thereby enabling a server request to be distributed by the Home Agent to one of the plurality of Mobile Nodes via the associated tunnel. For instance, a server request addressed to the Home Address may be forwarded to one of the Mobile Nodes assigned that Home Address.
Abstract:
A method for pushing data in an internet protocol (IP) network environment is provided that includes assigning a network identifier to an end user of a mobile station. A relationship is determined between the network identifier and an IP address element, the relationship being stored in a database. A query is received for the network identifier of the end user and, in response to the query, the IP address element is provided such that a querying entity may push data to the mobile station.
Abstract:
A method and system for re-direction and handoff for pre-paid mobile services in third generation ("3G") networks (170). A handoff marker is created and used for wireless mobile nodes (78) such as Mobile Internet Protocol ("Mobile IP") nodes. The handoff markers allow the wireless mobile nodes (78) to use pre-paid mobile services, have active communications sessions suspended and re-directed to a registration server (184) when purchased pre-paid mobile services run-out. The registration server (184) allows the wireless mobile node (78) to electronically purchase additional pre-paid mobile services and immediately resume a suspended communications session. The handoff markers also allows network devices in a mobile network to determine between initiation of a new communications session or a hard handoff of an existing communication session, without adversely affecting pre-paid billing services.
Abstract:
The invention is directed to enabling an serving node and a gateway node to be informed of a new route for a new node or sub-network that has become active behind a Mobile Terminal that can also act as a router. When IP level route injection occurs at the Mobile Terminal, a Modify session profile message causes insertion of a new IP address or prefix at a gateway node related to the new route. Also, the gateway node will update the serving node and the Mobile Terminal with information related to the new route or a proposed new route. The Mobile Terminal and the gateway node can share routing information over a dynamic routing protocol. Additionally, the Mobile Terminal and the gateway node can configure static routing information on routes towards each other. The new route can be added with 24,008 and/or GTP messages when initiated on the Mobile Terminal side for either the dynamic or static case.
Abstract:
The present invention provides a method of, computer programs for and apparatus adapted to operate a communications network to generate data defining a forwarding tree for the transmission of messages in said network, said method comprising: a) storing data associating each of the nodes of said network with at least one of N levels of a hierarchy, where N is an integer greater than one; b) operating each of the nodes in each of the first to (N-1) th levels to periodically send a join message to one of the nodes in a superior level in said hierarchy; c) in response to the receipt of a join message at a node, storing tree-defining data indicating that the sender of said join message is a member of a group of descendant nodes for which said receiving node is an ancestor node; whereby said tree-defining data so stored defines said forwarding tree.
Abstract:
Disclosed is a regional tunnel management method in a mobile communication system using Mobile IP. A mobile node transmits a location registration request to a first GGSN (Gateway GPRS (General Packet Radio Service) Support Node), upon receiving information indicating that the first GGSN supports a foreign agent function and also receiving an Agent Advertisement message with an address of a second GGSN. The information and the Agent Advertisement message are transmitted by the first GGSN. The first GGSN transmits the location registration request to the second GGSN. The second GGSN registers an address of the first GGSN to which the mobile node belongs, and then transmits to a home agent the Location Information message indicating an address of the first GGSN to which the mobile node belongs.
Abstract:
A method of and apparatus for connecting calls to mobile stations (A to H) in a radio telecommunications network, such as a private mobile radio system or a cellular telephone system, so as to minimise call set-up delays and communication bottlenecks in the fixed part of the network. A plurality of location data caches (d1 to d4) are provided, each arranged to store location data for selected mobile stations capable of communicating via the network. Each location data cache (d1 to d4) is accessible by one or more base stations (b1 to b4) of the network. In the event that location data is required for a mobile station (A to H) that is not one of the selected mobile stations in a location data cache (d1 to d4) accessible to a base station, the base station (b1 to b4) requests location data from a location data store (dc) containing location data records for all the mobile stations of the network.
Abstract:
A network element that acts as a local mobility anchor (LMA) in a communications network efficiently distributes signaling messages using a data plane and a control plane having a plurality of processes executing on a plurality of processing units. When a network connection ID of a received signaling message is not mapped to a host process in a steering table, the signaling message is sent to a process in the control plane. A second process is assigned to be the host process for the network connection, and the steering table is updated to indicate this assignment. Upon receipt of a second signaling message with the network connection ID, it is efficiently sent to the second process because of the updated steering table. A mobility access gateway (MAG) also utilizes a steering table with network connection ID to host process mappings to efficiently distribute signaling messages.