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Method for reserving a new care of address (coa) in advance to achieve a fast handover

A technology of address and address request, applied in data exchange through path configuration, network data management, electrical components, etc., can solve problems such as inability to perform binding, mobile node cannot use CoA, packet loss, etc.

Inactive Publication Date: 2004-11-03
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Accordingly, during this period, the mobile node cannot use the CoA set as the temporary address, and therefore, cannot perform binding
As a result, a large amount of packet loss during the handover

Method used

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  • Method for reserving a new care of address (coa) in advance to achieve a fast handover
  • Method for reserving a new care of address (coa) in advance to achieve a fast handover
  • Method for reserving a new care of address (coa) in advance to achieve a fast handover

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Embodiment Construction

[0027] The above objects, other objects and advantages of the present invention will be better understood through the following description in conjunction with the accompanying drawings.

[0028] figure 1 is a schematic diagram showing a wireless communication environment to which the new CoA reservation method according to the present invention can be applied. refer to figure 1 , the mobile node 100 is linked to the router 110 in the currently linked network. The currently linked router 110 is geographically adjacent to routers 120 and 130 . Routers geographically adjacent to the currently linked router 110 may include more than two routers, but only two routers are shown here by way of example.

[0029] If the mobile node 100 is connected to an external network, the mobile node 100 transmits a CoA Reservation Solicitation (CR-Sol) message to the currently linked router 110 . For the CoA reservation of the mobile node 100, the CoA reservation solicitation message contains...

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Abstract

A method is provided for reserving a new CoA in advance for a mobile node. The method for reserving the new CoA includes transmitting to the router a CoA reservation solicitation message including a link layer address of the mobile node from the mobile node; transmitting to the adjacent router the CoA reservation solicitation message including the current CoA and the link layer address of the mobile node the from router; generating a new CoA from the adjacent router and performing a duplicate address check on the new CoA to establish the new CoA; and storing the established new CoA in a proxy table that is managed by the adjacent router to perform the proxy.

Description

technical field [0001] The present invention generally relates to a method for reserving a new CoA (New Care-of Address, hereinafter referred to as "NCoA") under the environment of Mobile IPv6 (Internet Protocol Version 6) so as to realize fast switching, and particularly relates to a A method of pre-reserving a new CoA before a mobile node linked to an external network moves to another network in order to reduce the time necessary to generate a CoA and perform fast handover by using a new CoA pre-reserved in another network. Background technique [0002] Recently, with the rapid growth of Internet use, the development of radio communication technology, and the improvement of the performance of mobile terminals such as portable computers, PDAs (Personal Digital Assistants), users using wireless Internet are also increasing. In a wireless Internet environment, a mobile terminal will occasionally change its network connection site (site) as its location moves occasionally. Su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04L45/741H04L45/80H04W8/02H04W28/26H04W36/00H04W36/36H04W40/34H04W60/00H04W80/04
CPCH04W8/02H04W28/26H04W36/0016H04W80/04H04W60/00H04W8/26H04W36/08H04W8/12
Inventor 韩延熙
Owner SAMSUNG ELECTRONICS CO LTD