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Home agent, mobile router, and mobile communication method using the same

A technology of home agent and communication method, applied in wireless communication, network data management, wireless network protocol, etc., to prevent messages from disappearing

Inactive Publication Date: 2006-05-03
III HLDG 12 LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To this end, the home agent is required to capture its packets sent from the gateway, and the resulting overhead occurs

Method used

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  • Home agent, mobile router, and mobile communication method using the same
  • Home agent, mobile router, and mobile communication method using the same
  • Home agent, mobile router, and mobile communication method using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] FIG. 1 is a configuration diagram of a mobile communication system in an embodiment of the present invention.

[0045] In FIG. 1, a GW (Gateway) 101 is a device for connecting a home network and an external network (Internet). HA (Home Agent) 102 is a device that manages movement of the mobile network and ensures packet communication to the mobile network during movement. MR (Mobile Router) 103 is a router that accommodates a plurality of LFNs (Local Fixed Node) 104 and can be used after moving the network, and supports a routing protocol (an example is RIP). The LFN (Local Fixed Node) 104 is a fixed terminal relative to the MR 103, and it is not necessary to set the mobility support function on the terminal itself. MNET (Mobile Network) 105 is a network including MR103 and LFN104, and can be used while moving. The Internet 106 is an electrical communication line including wireless. AR (Access Router) 107 is a router for the MNET 105 to access the Internet 106 at the...

Embodiment 2

[0107] FIG. 12 is a block diagram showing the structure of the MNET according to this embodiment. As shown in FIG. 12 , multiple MR1 ( 1201 ) and MR2 ( 1202 ) are configured for a network prefix M-Prefix to manage MNET 1205 .

[0108] In the mobile communication system shown in FIG. 1, the operation of transferring data when the MNET 1205 according to this embodiment moves instead of the MNET 105 will be described below.

[0109] At this time, first, MR1 (1201) connects to the network at the moving destination, and once it obtains the care-of address CoA1 from AR107, it notifies HA102 of the obtained CoA1 and network prefix M-Prefix according to the binding update message.

[0110] The HA 102 that has received the binding update message processes the message in the same manner as in the first embodiment according to the flowchart shown in FIG. 5 , and sets up a bidirectional IP tunnel tn1. Furthermore, a binding cache (FIG. 2A) and a routing table (FIG. 2C) are also set.

[...

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Abstract

Including: a mobile router (103) that can be used by the mobile network sends a binding update message that notifies the care-of address of the mobile destination network to the home agent (102); and when receiving the binding update message, the home agent (102), the step of notifying the path control information of the mobile network (105) managed by the mobile router (103) on the home network; thus, the path control information from the mobile node (104) can be moved without delay to the The gateway (101) or router on the home network, therefore, can prevent the data destined for the mobile node (104) belonging to the moved network from disappearing.

Description

technical field [0001] The present invention relates to a mobile communication method when a home network itself moves between other mobile communication networks in a mobile communication system for accessing the Internet. Background technique [0002] Mobile IP is one of the mobility management methods in the Internet system, and Mobile IPv4 corresponding to IPv4 (Internet Protocol Version 4) is standardized by RFC3220 (IP Mobility Support). In addition, Mobile IPv6 corresponding to IPv6 (Internet Protocol Version 6) is currently being standardized in the Internet design draft draft-ietf-mobileip-ipv6 (Mobility Support in IPv6). Moreover, through these protocols, when a terminal moves between different networks, the mobile terminal can use the same address for communication. [0003] Furthermore, by extending the mobile IP protocol, a mobile network in which the entire local network is used as a mobile unit, and when moving between different networks, nodes belonging to t...

Claims

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Application Information

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IPC IPC(8): H04W36/00
CPCH04W8/06H04W80/04H04W84/005
Inventor 松本泰辅小林广和船引诚熊泽雅之
Owner III HLDG 12 LLC
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