Abstract:
There are provided a scalable method for mobility management applied to an IP-based network system including a plurality of routers and a plurality of servers, a part of which serve as a home routing manager (HRM), a part of which serve as local routing managers (LRM) for individual mobile nodes. The method at least comprises the steps of sending a first query about a routing address of a destination mobile node toward the HRM, based on an activation notification (AN) from an ingress access router (AR) of the plurality of routers, triggered by a source mobile mode, from an LRM receiving the activation notification; relaying the first query via one or more intermediate routing managers (IRM) closer to the HRM until the first query reaches the HRM; and in response to the first query, sending the routing address of the destination mobile node back to the ingress access router through the relay path from the HRM.
Abstract:
Provided are a location registration method for adaptive route optimization in a mobile communication network, a packet transmission method using the same, and a computer-readable recording medium storing a program for realizing the methods. The location registration method includes the steps of : a) calculating a session- to-mobility ratio (SMR) defined as a ratio of a session arrival rate to a mobility rate; b) comparing the SMR with a predetermined value; c) determining a mobile node (MN) of the mobile communication network; and d) registering a location of the mobile node (MN) according to the results of the steps b) and c) .
Abstract:
Die Erfindung betrifft ein Verfahren zum Betreiben eines Kommunikationssystems mit einem Mobilfunknetz erster Art und einem Mobilfunknetz zweiter Art sowie mit mindestens einem mobilen Endgerät (ME_1), wobei für die Mobilfunknetze unterschiedliche Registrierungsgebiete eingerichtet sind. Dabei optimiert das erfindungsgemäße Verfahren den Signalisierungsverkehr beim Wechsel eines inaktiven mobilen Endgerätes zwischen den Mobilfunknetzen. Darüber hinaus betrifft die Erfindung einen Netzknoten zum Übertragen von Daten in einem Mobilfunknetz und ein Kommunikationssystem.
Abstract:
A technology is disclosed for reducing the number of encapsulations required when MAP forwards a packet to a mobile node which is layered within mobile networks, with mobile networks nested and multiple mobile routers chained behind MAP (Mobility Anchor Point). MAP 120 manages the binding information between RCoA and LCoA for each of lower-level nodes and grasps the prefixes of each of lower-level mobile routers, for example, the prefix of mobile network 104 of MR 140 or the prefix of mobile network 106 of MR 142. For example, MAP 120 informs MR 140 of the prefix of the mobile network 106 and the binding information between RCoA and LCoA. In this way, MR 140 can grasp a next forwarding destination of the packet transmitted from MAP 120 to MN 150, and the packet can be reached at MN 150 unless the packet is encapsulated multiple times.
Abstract:
Extending Mobile IP MIP to support both local and remote access by using two MIP client stacks in the end node, a roaming Node (130') in the local access network, a standard Home Agent (150) in the remote network is described. Messages between the access node (120') and the mobile node (110), and between the internal modules of the mobile node (110) are used to control hand-off for each of multiple MIP clients operating in parallel in the mobile node and to enable backwards compatibility with legacy remote access clients.
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, which may be allocated by the Foreign Agent. 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 or to a cluster of Mobile Nodes (e.g., associated with the care-of address) via the associated tunnel. For instance, a server request addressed to the Home Address may be forwarded directly to one of the Mobile Nodes assigned that Home Address. Alternatively, when an address such as the care-of address is associated with multiple Mobile Nodes, the Foreign Agent may perform a second level of dispatching such that the server request is dispatched to one of the Mobile Nodes in the cluster.
Abstract:
A method and packet switched cellular telecommunication system wherein data flows from a terminal are aggregated into one or more Multi Protocol Label Switching (MPLS) Label Switched Path (LSP) based on at least one criterion. In a first embodiment, the data flows are aggregated into LSP(s) based on a Quality of Service (QoS) class of each such data flows, by a Network Node, such as a Radio network Controller (RNC) or a Serving GPRS Support Node (SGSN). In a second embodiment, the data flows or LSPs are aggregated into another LSP(s) based on the destination routing area. The LSP aggregation is performed by routing area Edge Node, such as a Gateway GPRS Support Node (GGSN). In a first variant of the 2nd embodiment, the aggregation is used for macro-mobility, while in yet another variant the same aggregation is used for defining a virtual private network.
Abstract:
Extending Mobile IP (MIP) to support both local and remote access by using two MIP client stacks in the end node (110), a roaming Node (130) in the local access network, a standard Home Agent (150) in the remote network is described. Messages between the access node and the mobile node, and between the internal modules of the mobile node are used to control hand-off for each of multiple MIP clients operating in parallel in the mobile node and to enable backwards compatibility with legacy remote access clients.
Abstract:
Methods and apparatus for enhancing Mobile IP signaling and to support use of disparate addressing plans and dynamic Home Agent allocation in Mobile IP Regional Tunneling are described. The enhanced methods of signaling use an intermediate node, e.g., a Gateway Foreign Agent, straddling different addressing domains, when the signaling controls a process between the intermediate node and an upstream node. The specific intermediate node, its interfaces and upstream addresses can be dynamically selected. The Enhanced MIP signaling includes dynamic allocation of: a regional node at a Foreign Agent, the upstream address of a regional node by the regional node, a Home Agent for a regional node prior to dynamic allocation of the regional node. A method is supported to indicate to a Mobile Node that a dynamically allocated regional node has become invalid triggering enhanced MIP signaling dynamically allocating a new regional node and upstream interface address.