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Mobile IP nonuniform switching detection in Wi-Fi network

A detection method and non-uniform technology, applied in the direction of data exchange through path configuration, etc., can solve the problem of increasing the burden on the MN, and achieve the effects of reducing the burden, saving wireless link resources, and reducing delay

Inactive Publication Date: 2006-05-31
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0021] The disadvantage of this method is that the periodic MAC address detection increases the burden on the MN

Method used

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  • Mobile IP nonuniform switching detection in Wi-Fi network
  • Mobile IP nonuniform switching detection in Wi-Fi network
  • Mobile IP nonuniform switching detection in Wi-Fi network

Examples

Experimental program
Comparison scheme
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Embodiment

[0038] Embodiment: provide a kind of concrete example implementing the method proposed in the present invention below, as figure 1 as shown in the process;

[0039] Step 1: Compare whether the MAC address of the AP has changed. In the case where the link layer handover information cannot be obtained, the mobile detection of the MN is a passive behavior, and the AR frequently sends RA messages on the wireless port of the AP by broadcasting, which also occupies more wireless resources. Since the Wi-Fi hardware can provide the network layer with the identity of the AP to which the MN is currently attached, that is, the MAC address, the present invention detects the change of the MAC address of the AP to perceive the occurrence of handover. If the MAC address changes, go to step 2; otherwise, go to step 7.

[0040] Step 2: When the MN is in an ESS, the MAC address of each AP in the ESS is obtained through the AR, and cached.

[0041]Step 3: According to the MAC address of the n...

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Abstract

The method detecting changes of MAC address of AP is used to detect happening of switch. Non-uniform interval detection model is used to make detection. When MN detects happening of switch, it gets new MAC address of AP. With looking up mapping table, MN gets the IP address of AR and subnet prefix in the accessed ESS. The MAC address of MN and the subnet prefix of its neighboring ESS are used to build care-of-address of MN, and makes uniqueness authentication and pre-login to AR in its neighboring ESS. The features of invention includes: detection to mobility of node doesní»t require support of beacon and trigger in link layer, and can be implemented in network layer so that it can be applied in existing WLAN environment directly.

Description

Technical field [0001] The invention relates to a non-uniform switching detection method of mobile IP in a Wi-Fi network. Background technique [0002] With the maturity of wireless technology and the continuous emergence of new services on the Internet, providing multimedia services such as voice and video for mobile terminals has become an inevitable trend in the development of communication technology. Compared with 3G and other technologies, IEEE 802.11 wireless local area network (Wi-Fi) technology can provide higher channel bandwidth and flexible networking mode, and its application in Internet wireless access is more and more extensive. In addition, IETF has released the mobile IPv6 standard (RFC 3775) recently, and this standard will definitely promote the popularization of Internet wireless access technology. [0003] However, the current Mobile IPv6 protocol (MIPv6: Mobile IPV6) only solves the problem of maintaining the communication continuity of the mobile node...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28
Inventor 刘云沈波张振江穆海冰
Owner BEIJING JIAOTONG UNIV
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