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Communication control method, address management node, and mobile node

A mobile node and address management technology, applied in wireless communication, network data management, digital transmission system, etc., can solve problems such as power consumption and business volume increase, unobtainable status, unknown ISP status, etc., to optimize the communication path Effect

Inactive Publication Date: 2008-03-26
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] On the other hand, although the MN can obtain the state of the ISP currently used as the source address of the inner packet, the MN cannot obtain the state of the ISP whose use has been temporarily stopped, or the state of the ISP whose use is unknown
In addition, in the case where the MN includes a plurality of interfaces corresponding to the respective ISPs in order to confirm the status of the ISP that has not been used as the source address of the inner packet, the MN must cause the corresponding interface to be activated every time the signal is sent, so that the power consumption and Increased business volume

Method used

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  • Communication control method, address management node, and mobile node
  • Communication control method, address management node, and mobile node
  • Communication control method, address management node, and mobile node

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Embodiment Construction

[0096] First to third embodiments of the present invention will now be described with reference to the drawings. First, referring to FIG. 1, a network configuration commonly used by the first to third embodiments of the present invention will be described. FIG. 1 is a diagram showing an example network configuration commonly used by the first to third embodiments of the present invention.

[0097] In FIG. 1 , there are shown: the Internet 11, which is an IP network; four ISPs (Internet Service Providers), which connect the Internet 11 to sites; and three sites, which are connected to the Internet 11 through these ISPs. It should be noted that four ISPs are denoted by ISP1, ISP2, ISP3, and ISP4, and three stations are denoted by Site 1, Site 2, and Site 3 so that they can recognize each other.

[0098] With respect to the Internet 11, Site 1 is connected through ISP1 and ISP2, Site 2 is connected through ISP3, and Site 3 is connected through ISP4. Additionally, Network 1 belo...

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Abstract

A technique is disclosed which grasp the statuses, which can be acquired on a home network, while a MN (mobile node) being away from the home network, to optimize the communication path of packets to be transmitted between the MN and a CN (correspondent node) via a HA (home agent). According to this technique, a HA (20), which manages a plurality of home addresses assigned to an MN (10), detects, for example, the communication statuses of ISP1 and ISP2, and selects a home address set to the address of a transmission source of an internal packet included in an encapsulated packet to be transmitted from the MN to the HA for a packet transmission from the MN to a CN (15) via the HA. The MN sets this home address to the address of the transmission source of the internal packet, whereby the packet to be transferred after being decapsulated by the HA can be delivered to the CN via the ISP1 or ISP2 having a better communication status.

Description

technical field [0001] The present invention relates to a communication control method for performing communication using IP (Internet Protocol), and an address management node and a mobile node, and particularly to an address management node and a mobile node in which a multihoming function and a mobility function are installed, And a communication control method for controlling communication to be performed between these nodes. Background technique [0002] Typically, there is a configuration known as multi-homing, which facilitates connections to multiple Internet Service Providers (ISPs). The state in which a site has a multi-homing configuration is specifically referred to as site multi-homing. Hereinafter, a site with a multi-homing configuration is called a multi-homed site, and a subnet (subnetwork) belonging to a multi-homed site is called a site multi-homed network. [0003] Site multi-homing will now be described with reference to FIG. 16 . FIG. 16 is a diagram...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04Q7/28H04Q7/22H04W8/14
Inventor 阿相启吾平野纯
Owner PANASONIC CORP