Mobile communication terminal apparatus, control method thereof, communication system, and loaming method thereof

A mobile communication terminal and data communication network technology, applied in the field of mobile communication terminal devices, can solve the problems of expensive base stations, complex base station structures, and inability to fully realize smooth switching, and achieve the effect of expanding the available range

Inactive Publication Date: 2007-10-10
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These techniques can reduce switching overhead, but it takes a certain amount of time to switch from the old care-of address to the new care-of address
Therefore, even with these techniques, smooth switching is still not fully achieved
Furthermore, in these techniques, since the association between the home address and the care-of address of the mobile communication terminal device has to be dynamically provided to the base station, the signal processing load in the base station increases.
Furthermore, these techniques depend on the capabilities and functions of the base station that actually performs each process of handover, thus making the structure of the base station more complicated and making the base station more expensive

Method used

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  • Mobile communication terminal apparatus, control method thereof, communication system, and loaming method thereof
  • Mobile communication terminal apparatus, control method thereof, communication system, and loaming method thereof
  • Mobile communication terminal apparatus, control method thereof, communication system, and loaming method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0075] FIG. 1 is a block diagram showing the configuration of a mobile communication terminal device 100 .

[0076] The mobile communication terminal device 100 includes m (m is an integer greater than 2) network access units (NAU: Network Access Unit) 10 , UPL (Upper Protocol Layer, upper protocol layer) 102 , and MADU (Multiple Access Decision Unit) 103 . In addition, when referring to NAU101a to 101m in general without distinguishing them individually, it is only indicated as NAU101.

[0077] The NAU 101 has a network access mechanism consisting of hardware that is a physical network interface, software for controlling such hardware, and a protocol for managing communication using such hardware. For example, in the OSI (Open System Interconnection, Open System Interconnection) model of the International Organization for Standardization (ISO), the NAU 101 includes all protocols related to the physical layer and the data link layer.

[0078] The purpose of the present invent...

Embodiment approach 2

[0170] The specification of each component in Embodiment 1 requires that all NAUs 101 understand and comply with the contents of the three defined interfaces. Since NAUs 101 are usually provided by different vendors or manufacturers, all NAUs 101 may not be able to understand the interface. Therefore, in Embodiment 2 of the present invention, NIT 305 , which is a dedicated translator for NAU 101 , is added to mobile communication terminal device 100 .

[0171] FIG. 3 is a block diagram showing the configuration of mobile communication terminal device 300 . Most of the constituent elements of the mobile communication terminal device 300 perform the same functions as those of the mobile communication terminal device 100 in the first embodiment. Therefore, components of mobile communication terminal device 300 that perform the same functions as components of mobile communication terminal device 100 are given the same reference numerals as those of mobile communication termin...

Embodiment approach 3

[0176] FIG. 5 is a block diagram showing the configuration of mobile communication terminal device 400 according to Embodiment 3 of the present invention. In the mobile communication terminal device 400, a method of hierarchically controlling MADU is adopted. In addition, most of the constituent elements of the mobile communication terminal device 400 have the same functions as the constituent elements of the mobile communication terminal device 100 in the first embodiment. Therefore, components of mobile communication terminal device 400 that perform the same functions as components of mobile communication terminal device 100 are given the same reference numerals as those of mobile communication terminal device 100 , and descriptions thereof are omitted.

[0177] The mobile communication terminal device 400 has the NAU 401 including a plurality of input channels and output channels in addition to the normal NAU 101 in the mobile communication terminal device 100 . An exa...

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Abstract

A mobile communication terminal apparatus and a control method thereof wherein a smooth handoff can be quickly achieved in a seamless manner during a loaming between data communication networks of different packet exchange systems. A mobile communication terminal apparatus (100) comprising a network access unit (NAU) (101) having a network access mechanism that has been uniquely established by adjusting the specifications of hardware, software and protocols; and a MADU (Multiple Access Decision Unit)(103) that uses a set of interfaces to exchange information with the NAU (101), thereby deciding a channel to be used in a communication session, and that controls the NAU (101) corresponding to the decided channel; wherein the mobile communication terminal apparatus performs a loaming between data communication networks of different packet exchange systems.

Description

technical field [0001] The present invention relates to a mobile communication terminal device that can be used in a plurality of packet-switched data communication networks, and whose connection point for participating in the network is often changed, that is, roaming. In particular, it relates to a mobile communication terminal device which has a plurality of network access mechanisms for participating in a plurality of said networks, and which collectively controls these network access mechanisms so as to conform to the protocols of said networks. [0002] Also, the present invention can be applied to dual radio access technologies such as IEEE (Institute of Electrical and Electronics Engineers: Institute of Electrical and Electronics Engineers) 802.11 and W-CDMA (Wideband Code Division Multiple Access). [0003] Furthermore, the present invention can expand the usable range of mobile communication terminal devices by providing a mobile communication terminal device and a c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04L12/56H04W36/14H04W36/36H04W40/34H04W88/06
CPCH04W76/04H04W36/14H04W88/06H04W76/20H04B7/2603
Inventor 吴振华程洪陈必耀高添明
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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