Radio communication system and method therefor and portable radio communication unit and method therefor

A technology of a wireless communication device and a wireless communication system, applied in the direction of wireless communication, wireless communication service, security device, etc., capable of solving problems such as inability to authenticate communication, inability to establish normal communication, etc.

Inactive Publication Date: 2007-09-26
ORMON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, normal authentication communication cannot be performed, that is, a problem that normal communication cannot be established
[0008] Such a problem may occur not only in the anti-theft system of the vehicle, but also in the entire wireless communication system in which one of the plurality of portable wireless communication devices is authenticated by the fixed wireless communication device

Method used

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  • Radio communication system and method therefor and portable radio communication unit and method therefor
  • Radio communication system and method therefor and portable radio communication unit and method therefor
  • Radio communication system and method therefor and portable radio communication unit and method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0089] FIG. 1 shows a configuration example of a vehicle antitheft system as an embodiment of a wireless communication system to which the present invention is applied.

[0090] In the example of Fig. 1, the vehicle anti-theft system consists of ECU 11 installed on the vehicle 1 as a fixed wireless communication device, and N (N is an integer value above 2) portable electronic keys 2-1 to 2 as portable wireless communication devices. -N form.

[0091] Also, below, when there is no need to distinguish the individual portable electronic keys 2 - 1 to 2 -N, they are collectively referred to as portable electronic keys 2 . Moreover, the quantity of the portable electronic key 2 generally does not use "unit", but in order to emphasize that the portable electronic key 2 is an embodiment of a portable wireless communication device, "unit" is used in this specification.

[0092] The ECU 11 performs authentication communication with one of the portable electronic keys 2-1 to 2-N, and ...

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PUM

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Abstract

A radio communication system has a fixed radio communication unit that sends a request for authentication, and portable radio communication units. Each portable radio communication unit receives the request, transmits presence information to the portable radio communication units, and determines whether presence information from more than one portable radio communication unit was received. When it is determined that the presence information from only one portable radio communication unit was received, the portable radio communication unit transmits an answer to the fixed radio communication unit. When it is determined that presence information from more than one portable radio communication unit was received, each portable radio communication unit sets a response delay time by a specified setting method, and after a lapse of the response delay time, an answer is sent to the fixed radio communication unit. The fixed radio communication unit authenticates the portable radio communication units that sent the answer.

Description

technical field [0001] The present invention relates to a wireless communication system and method, a portable wireless communication device and method, and in particular to a wireless communication system and method that can realize normal authentication communication even if there are a plurality of portable wireless communication devices within the communication circle of a fixed wireless communication device, and Portable wireless communication device and method. Background technique [0002] A conventional antitheft system for a vehicle consists of an ECU (Electronic Control Unit: Electronic Control Unit) mounted on the vehicle and a portable electronic key carried by a user who drives the vehicle (for example, refer to Patent Document 1 or 2). [0003] At this time, if the ECU performs authentication communication with the portable electronic key and the authentication succeeds, it executes necessary processing for unlocking the vehicle doors or starting the engine. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38E05B49/00E05B65/12B60R25/00B60R25/01B60R25/04B60R25/24H04W4/00H04W12/00H04W12/06H04W48/08H04W74/08
CPCB60R25/2072H04L63/08G07C9/00309H04L67/04H04W12/06H04W12/069
Inventor 樫山正人植田雄佑
Owner ORMON CORP
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