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Access point controller acting as mobile IP agent in public wireless local area network

An access point controller and wireless local area network technology, applied in the field of mobile IP, can solve the problems of less MobileIP functions, restricting the promotion and implementation of PWLAN solutions, and restricting the application of MobileIP, so as to avoid maintenance work, reduce network investment and operating costs, Effect of improving switching efficiency

Inactive Publication Date: 2009-01-14
UTSTARCOM TELECOM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there are very few user terminals on the market that actually support the Mobile IP function, so the lack of terminals will greatly limit the application of Mobile IP in PWLAN, thereby further restricting the promotion and implementation of PWLAN solutions

Method used

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  • Access point controller acting as mobile IP agent in public wireless local area network

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Embodiment Construction

[0020] The present invention will define that all end users will always be in the foreign network, and their home network will be only a logical concept. After the mobile IP proxy module of the AC finds that a user terminal is turned on and registered, it registers its current location in the corresponding FA and HA. Similarly, when the mobile IP proxy module of the AC finds that a user terminal is switched over from another AC , will also register the user's current location to the corresponding FA and HA. There will be a mechanism between different ACs to ensure that the same user terminal will always correspond to the same HA during the handover process. The present invention defines that when a user terminal is handed over from one AC to another AC, it is a Layer 3 handover, thereby triggering the Mobile IP handover processing flow.

[0021] Below in conjunction with Fig. 1 the flow process of the present invention is described in detail, in Fig. 1:

[0022] AP (Access P...

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Abstract

A method of mobile IP in public wireless local area network (PWLAN) is provided, in which the PWLAN includes multiple user terminals and multiple access point controllers and the mobile IP agent module is set in the access point controllers. Said method includes: the mobile IP agent module in the access point controllers discovers the registration of one user terminal, the mobile IP agent module in the access point controllers will choose the corresponding foreign agent and home agent for the user terminal, the mobile IP agent module substitutes the user terminal according to the mobile IP standard definition to initiate the location registering request of the mobile IP and the location information will be preserved in the home agent and the foreign agent after the successful registration. The advantage of the present invention is that the solution of Mobile IP is introduced to the PWLAN with transparence to the user terminal. At the same time, more latent user terminals will be attracted as possible because the user terminal needn't join.

Description

technical field [0001] The invention relates to a mobile IP (Mobile IP, Mobile Internet Protocol) in a public wireless local area network (PWLAN, Public. Wireless Local Area Network) solution. In particular, a processing mechanism for Mobile IP that does not require terminal participation is proposed. Background technique [0002] Different from the fixed access network, in the PWLAN (Public Wireless Local Area Network), end users should be allowed to switch freely within the coverage of the entire network. And at the same time, it is required to maintain the current connection without interrupting the current application due to various switching. Therefore, for the PWLAN solution, the seamless switching of users should be a basic function that must be provided. In PWLAN, switching will be divided into switching based on layer 2 and switching based on layer 3 according to the different mechanisms. [0003] And PWLAN (Public Wireless Local Area Network) solutions usually u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/28H04L29/06
CPCH04W8/065H04W88/12H04W80/04
Inventor 林本浩陈迎威
Owner UTSTARCOM TELECOM CO LTD