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Virtual care-of address for mobile IP (Internet Protocol)

A technology of care-of address and IP address, which is applied in the field of mobile IP and can solve problems such as inconvenient IP connectivity

Active Publication Date: 2012-07-18
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Disruption of IP connectivity to a mobile node is inconvenient for mobile node users who rely on their communication means to conduct transactions, obtain information, etc.

Method used

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  • Virtual care-of address for mobile IP (Internet Protocol)
  • Virtual care-of address for mobile IP (Internet Protocol)
  • Virtual care-of address for mobile IP (Internet Protocol)

Examples

Experimental program
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Embodiment Construction

[0017] In the following description, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practiced without these specific details. In other instances, well-known circuits, connections, structures and techniques have not been shown in detail in order not to obscure the understanding of this description. Those skilled in the art, with the included description, will be able to implement appropriate functionality without undue experimentation.

[0018] References in the specification to "one embodiment," "an embodiment," "an example embodiment," etc. indicate that the described embodiments may include a particular feature, structure, or characteristic, but that each embodiment may not necessarily include the particular feature, structure, or characteristic. structure or property. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure or characteristic ...

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Abstract

An IP (Internet Protocol) session for a mobile node is carried out through the use of a virtual care-of address. A foreign agent sends an agent advertisement to the mobile node to allow the mobile node to choose from a list of IP addresses of the foreign agent To perform virt?al care-of address services, the foreign agent ties die virtual care-of address to a mobile node so that an intelligent and dynamic selection of tunnels to be used for the IP session can occur. Therefore, traffic for an IP session is not limited to transmission over the single particular tunnel that corresponds to an IP address initially selected by the mobile node. Rather, the virtual care-of address shifts the tunneling decision from the be mobile node to the foreign agent.; Supporting multiple tunnels between home agent and foreign agent allows resilience, redundancy, and service-level differentiation to mobile node traffic without involving the mobile node in the process.

Description

technical field [0001] Embodiments of the present invention relate to the field of Mobile IP (Internet Protocol); and more particularly to virtual care-of-addresses assigned to mobile nodes. Background technique [0002] Mobile IP is a protocol described in Request for Comments (RFC) 3344, August 2002, which allows various subnetworks of laptops or other mobile computing units (referred to herein as mobile nodes) at various locations Roam between users while maintaining Internet and / or WAN connectivity. Mobile agents (eg home agent, foreign agent) provide Mobile IP functionality. In a typical Mobile IP network, each mobile node is identified by its home address (assigned by the home agent) regardless of its current point of attachment to the Internet. Although far from its home, the mobile node is associated with a care-of-address (provided by the foreign agent) which indicates the mobile node's current point of attachment for reachability. Although a mobile node is far f...

Claims

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Application Information

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IPC IPC(8): H04L29/06H04W76/02
CPCH04W80/04H04W8/26H04W76/022H04L29/06088H04L69/14H04W76/12
Inventor V·瓦卢里S·I·拉曼
Owner TELEFON AB LM ERICSSON (PUBL)