A communication method for switching the mobile node from IPv6 network to IPv4 network

A mobile node and ipv6 network technology, applied in the field of communication, can solve the problems such as the inability to obtain the IPv6 address care-of address of the communication node, and the inability to directly apply the MobileIPv6 protocol.

A mobile node and ipv6 network technology, applied in the field of communication, can solve the problems such as the inability to obtain the IPv6 address care-of address of the communication node, and the inability to directly apply the MobileIPv6 protocol.

CN101018412AInactive Publication Date: 2007-08-15SUN YAT SEN UNIV
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  • A communication method for switching the mobile node from IPv6 network to IPv4 network
  • A communication method for switching the mobile node from IPv6 network to IPv4 network
  • A communication method for switching the mobile node from IPv6 network to IPv4 network

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Embodiment Construction

[0064] The present invention provides a communication method for realizing the handover of a mobile node from an IPv6 network to an IPv4 network. The basic idea is: the mobile node supports both IPv4 and IPv6 protocols, so that the mobile node can communicate with corresponding protocols in different networks; A NAT-PT gateway with DNS-ALG is set between the IPv4 network and the IPv6 network. After the mobile node moves from the IPv6 network to the IPv4 network, it can query the IP address of the home agent and its communication node through DNS for subsequent registration, The communication process ensures the continuity of communication and supports route optimization.

[0065] An example of the present invention is given below, and the specific implementation manner of the present invention will be described in detail with reference to FIG. 10 .

[0066] 1. The mobile node learns that it has entered the IPv4 network from the IPv6 network through the agent advertisement mess...

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Abstract

The related continual communication switch method from IPv6 to IPv4 network comprises: as both the local agent and communication node on IPv6 network, setting a NAT-PT gateway with DNS-ALG between the IPv6 and IPv4 network; when moving from IPv6 to IPv4 network, the node queries the IPv4 addresses of local agent and node distributed by NAT-PT gateway for next register and communication. Besides, this invention applies mobile option of Care-of Test message for convenient data calculation.

Description

technical field [0001] The invention relates to the communication field, in particular to a communication method for realizing the handover of a mobile node from an IPv6 network to an IPv4 network. Background technique [0002] With the development of network technology and the expansion of network scale, IPv4 (Internet Protocol version 4) can no longer meet the requirements of network development. As an alternative version of IPv4, IPv6 (Internet Protocol version 6) can provide a huge address space and has many new features that IPv4 does not have, and has received more and more attention. Due to the small number of IPv4 addresses in our country, the problem of address exhaustion is particularly prominent, and our country is vigorously promoting the research and development of IPv6. On the other hand, as people's demand for mobile communication increases day by day, the research on mobile communication has also reached an unprecedented height. [0003] In order to solve t...

Claims

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Application Information

Patent Timeline
15 Aug 2007
Publication
CN101018412A
IPC
H04Q7/38; H04L29/06; H04W8/08; H04L12/56; H04L12/937; H04L29/12; H04W36/14; H04W80/04
Inventors
马争鸣; 谭庆宇