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Mobile terminal equipment and packet communication method between terminals

A technology of terminal equipment and mobile terminals, which is applied in communication between multiple stations, wireless communication, data exchange through path configuration, etc., and can solve problems such as increased delay time, difference in packet transmission time, and increased overhead

Inactive Publication Date: 2004-06-16
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, since the communication between the mobile node MN and the home agent HA is in the form of adding a sealed IP header to the source packet, there is an increase in the overhead for packet transfer control, and there is a delay until the packet reaches the destination terminal The problem of getting bigger over time
[0034] In addition, if the optimization process of the communication path is performed during the communication of the data packet, there will be a difference between the packet transmission time before the path optimization and the optimized packet transmission time.

Method used

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  • Mobile terminal equipment and packet communication method between terminals
  • Mobile terminal equipment and packet communication method between terminals
  • Mobile terminal equipment and packet communication method between terminals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0176] Embodiment 2 is characterized in that, in the optimization (220-311) of the communication path between the mobile node 30x and the terminal 40 that responds to the reception of the SIP message from the terminal 40, the SIP server 20 is added to communicate with the mobile node 40. Optimization of SIP message communication paths between nodes 30x. That is, in this embodiment, when the SIP message (201) is received from the terminal 40, the SIP server 20 and the home agent 10 can directly send and receive the message between the SIP server 20 and the mobile node 30X by performing steps 241 to 247. The SIP request message (INVITE) and the SIP response message (200OK) of the home agent 10 passed in Embodiment 1 (201B, 202B).

[0177] In this embodiment, the SIP server 20 such as Figure 22 As shown, in the program memory 26, in addition to the basic control routine 260~Location server function routine 264, it also includes a Binding (that is, binding) information collectio...

Embodiment 3

[0195] Embodiment 3 is characterized in that by automatically notifying the address of the home agent from the home agent 10 to the SIP server, the SIP server can dynamically generate entries in the MN identification address / HA address correspondence table 273 .

[0196] Figure 28 A structural diagram of the home agent 10 in this embodiment is shown.

[0197] Internal agent 10 is in program memory 16, except Figure 25 In addition to the programs 160 to 163 held by the home agent in Embodiment 2 shown in , it also includes an HA address notification processing routine for notifying the SIP server of the correspondence information between the identification address of the mobile node and the HA (home agent) address. Procedure 500.

[0198] exist Figure 27 In the terminal location registration 100 to the internal agent and the terminal location registration 110 to the SIP server, execute Figure 8 Steps 101-108 and steps 111-118 shown in . When the home agent 10 responds ...

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Abstract

A mobile terminal having a packet communication function according to a mobile IP and a communication route optimizing function includes a session controller for setting a session between terminals in accordance with a session control message of a protocol different from the mobile IP. When a session control message from the other party is received in a visited mobile IP network, the session controller executes optimization of a communication route to the other party by the communication route optimizing function before transmitting a response for the received message.

Description

technical field [0001] The present invention relates to a mobile terminal device and a method for inter-terminal packet communication, in particular to a mobile terminal device and a method for inter-terminal packet communication in a mobile communication system to which the Mobile IP (Mobile IP, Mobile Internet Protocol) protocol is applied. Background technique [0002] In recent years, studies on applying IP (Internet Protocol, Internet Protocol) to mobile communication networks have been actively conducted. For example, as described in "Mobility Support in IPv6 <draft-ietf-mobileip-ipv6-18.txt>, Work in Progress" (non-patented document 1), in the IETF (Internet Engineering Task Force, Internet Engineering Task Force) The standardization of the mobile IPv6 specification is in progress. Mobile IPv6 basically inherits the function of IPv4 corresponding to mobile IP standardized in IETF RFC3220 (non-patented document 2). [0003] The mobile IPv6 network is composed o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/08H04L12/28H04L12/46H04L12/701H04L29/06H04L29/12H04W8/08H04W28/00H04W40/24H04W40/34H04W40/36H04W80/04H04W80/10H04W84/12
CPCH04L61/157H04L61/1529H04W40/246H04L29/12066H04W40/248H04L61/1511H04L67/14H04L29/12094H04W40/36H04W80/04H04W8/082H04L29/1216H04W80/10H04L61/4535H04L61/4557H04L61/4511
Inventor 武田幸子井内秀则森重健洋大西恒市川淳
Owner HITACHI LTD