Mobile wireless terminal apparatus and wireless communication system

A wireless communication system, mobile wireless technology, applied in the direction of wireless communication, selection device, communication between multiple stations, etc., can solve the problems of weakening the desire, unable to expect the sound development of telematics technology service industry, etc., and achieve extended communication the effect of time

Inactive Publication Date: 2006-07-05
HITACHI LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This weakens the desire of companies joining the telematics service, and cannot expect the sound development of the telematics service industry

Method used

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  • Mobile wireless terminal apparatus and wireless communication system
  • Mobile wireless terminal apparatus and wireless communication system
  • Mobile wireless terminal apparatus and wireless communication system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0031] figure 1 It is a figure explaining the configuration of the wireless communication system and mobile wireless communication terminal device in the first embodiment of the present invention, figure 2 It is a diagram illustrating the configuration of the radio base station in the first embodiment of the present invention.

[0032] Such as figure 1As shown, the wireless communication system in this embodiment includes, for example, a mobile wireless terminal device (hereinafter abbreviated as MOT) 100 installed in a vehicle 300, etc., and a wireless base station (hereinafter abbreviated as AP) installed in places such as roadsides, for example. 200 constitutes. The AP 200 is, for example, a base station of a wireless LAN based on the IEEE 802.11 standard, and its communicable wireless communication area 400 is a range of several hundreds of meters centered on the AP 200 . That is, MOT 100 mounted on vehicle 300 communicates with AP 200 within wireless communication a...

no. 2 Embodiment approach

[0052] Figure 5 It is a diagram explaining the configuration of the wireless communication system in the second embodiment of the present invention. Such as Figure 5 As shown, in the second embodiment, adjacent APs 200 are connected by a network 250 . Here, the composition of MOT100 and AP200, and figure 1 as well as figure 2 same as described in .

[0053] When a plurality of adjacent APs 200 are connected via the network 250 as in the present embodiment, the AP 200 can acquire information on the channel used for communication between the AP 200 and the MOT 100 from other adjacent APs 200 . Therefore, AP 200 acquires channel information from other nearby APs 200 , and generates priority data based on the acquired channel information and its own channel information. After that, the priority data is sent to MOT100. MOT 100 receives the priority data, and updates its own priority data 114 based on the priority data.

[0054] In this way, the priority data specific to ...

no. 3 Embodiment approach

[0056] Figure 6 It is a diagram illustrating the configuration of a wireless communication system in the third embodiment of the present invention. Such as Figure 6As shown, in the third embodiment, as a system configuration, the server device 500 is further connected to the network 250 in the second embodiment. Here, the composition of MOT100 and AP200, and figure 1 as well as figure 2 same as described in .

[0057] Server device 500, such as Figure 6 As shown, it is composed of an information processing unit 511, a network interface unit (hereinafter referred to as NI unit) 512 connected to the network 250, and a storage unit 515 connected to the information processing unit 511 and storing basic priority data 514 and the like. In addition, the storage unit 515 is constituted by a semiconductor memory, a hard disk storage device, etc., or a storage device combining them.

[0058] In the present embodiment, the server device 500 receives information on the channel ...

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Abstract

A wireless communication system for high-speed motion use, capable of shortening the frequency channel search time and increasing the communication time available for service. The system includes an access point communicating on a designated one frequency channel and a mobile terminal communicating on the same received channel by receiving radio waves transmitted by the same access point. As for mobile terminal, in a storage, priority data is stored for a channel search in which arbitrary priorities can be set respectively for the channels. Frequency channel search sequence data, set up so that the number of times of appearance becomes greater for channels for which the priority data are set higher, are generated on the basis of the relative data, and a search of communication-capable channels is carried out in accordance with the same channel search sequence data.

Description

technical field [0001] The present invention relates to a mobile wireless terminal installed in a high-speed moving object and a wireless communication system including the mobile wireless terminal. Background technique [0002] Currently, when accessing desired information on the Internet or the like in real time from information terminal devices mounted on mobile bodies such as people, vehicles, and trains, it is necessary to use a wireless communication system. For wireless communication, calls or emails are commonly used on mobile phones, and the range of its communication network has been large enough to cover more than 90% of the domestic population, and it is becoming more and more popular. Therefore, a mobile phone is very effective for wide-area movement, and is also very effective for high-speed movement. In addition, mobile phones can also be used for talking on the Shinkansen, that is, when traveling at a high speed of 200 km per hour or more. [0003] Therefor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/32H04Q7/20H04B7/26G07B15/00H04W24/00H04W48/16H04W74/00H04W76/02
CPCH04W48/16H04W48/20
Inventor 铃木秀哉
Owner HITACHI LTD
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