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Multihome support method and apparatus

A multi-homing and device technology, applied in network data management, electrical components, wireless network protocols, etc., can solve the problem that mobility protocols cannot be used efficiently

Inactive Publication Date: 2010-09-15
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, mobility protocols such as Mobile IP cannot be efficiently used where NAT-based methods are used for multi-homing

Method used

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  • Multihome support method and apparatus
  • Multihome support method and apparatus
  • Multihome support method and apparatus

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Embodiment Construction

[0022] In order to allow mobile networks to benefit from multihoming, this paper proposes to introduce an architecture consisting of groups of SHIM6 agents (SHIM6 agent group) that work together to maintain the SHIM6 context for a given mobile node. This is in contrast to prior art solutions where a single SHIM6 agent is only responsible for maintaining the host's SHIM6 context.

[0023] Within a SHIM6 agent group, a hierarchy is created; SHIM6 agents within a GMM anchor are called primary SHIM6 agents and others are called secondary SHIM6 agents. The master SHIM6 agent must be located within the network that owns the mobile node's GHoA (which will be used as ULID in the context of SHIM6). In the case of roaming, a secondary SHIM6 agent can reside in the visited network. If the mobile node's access router supports LMM (eg Proxy Mobile IPv6), it is also possible that the access router accommodates a secondary SHIM6 proxy. The master SHIM6 agent is responsible for establishing...

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Abstract

A method of facilitating multihoming in the case of a mobile node possessing an Upper Layer Identifier belonging to a home network, where the mobile node is assigned a Global Mobility Management anchor within the home network and a Local Mobility Management anchor within a visited network. The method comprises allocating to the mobile node a primary SHIM6 proxy at said Global Mobility Management anchor, and at least one secondary SHIM6 proxy at said Local Mobility Management anchor. At said primary SHIM6 proxy, a SHIM6 context is established on behalf of the mobile node in respect of a peer node;, and the established context is shared with said secondary SHIM6 proxy. Locator switching is then performed in respect of traffic exchanged between the mobile node and said peer node at one of said primary and secondary SHIM6 proxies.

Description

technical field [0001] The present invention relates to methods and devices for providing multihome support for mobile nodes. The present invention specifically relates to providing such multi-homing support using Layer 3 Shim for IPv6 (SHIM6). Background technique [0002] "Multihoming" is a term used to describe providing a single mobile node with multiple direct or indirect IP interfaces such that the mobile node can send and / or receive data via any of the interfaces. Consider, for example, that a wireless mobile terminal belonging to a user is subscribed to a home Public Land Mobile Network (PLMN). The home network may assign a fixed IP address to the terminal, that is, a global home address (GHoA). When the terminal is attached to the home PLMN, the terminal can be directly reached with GHoA. However, when the terminal is attached to the visited PLMN, the visited PLMN will assign a local IP address to the terminal, called a local home address (LHoA). Furthermore, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
CPCH04L61/6077H04L29/12952H04W8/085H04W80/04H04W88/182H04W60/005H04W8/087H04L2101/677
Inventor S·苏吉摩托R·卡托T·奥达
Owner TELEFON AB LM ERICSSON (PUBL)
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