Portable terminal locking device and method utilizing short message

Abstract

The invention relates to a locking device and the method for portable terminals utilizing short messages, wherein SIM information of a registered GSM portable terminal is changed by utilizing messages to limit use of mobile communication service. The locking device and the method for portable terminals is characterized with the following parts: a high-frequency part connected to the base station for mobile communication wirelessly and applied to receive and send communication signals, a message testing part connected to the high-frequency part and applied to detach and test messages received from the base station, a testing part for locking information applied to analyze messages inputted from the message testing part and output detached locking information, an SIM card applied to save records of locking information inputted from the testing part for locking information to the assigned area and a control part applied to monitor the assigned area of the SIM card and to control the high-frequency part to cut off sending and receiving of wireless signals if locking information is detected. The locking device and the method for portable terminals has the advantage of remote restriction so that a GSM portable terminal cannot be used without permission.

Description

technical field [0001] 本发明涉及利用短信息远程控制便携终端的运用,特别是涉及一种利用短信息的便携终端锁定装置及方法,它利用短信息把锁定信息记录于GSM(全球移动通信系统)方式便携终端的指定SIM(用户标识模块)区域,以此远程控制便携终端使用移动通信。 Background technique [0002] 便携终端(MS:MOBILE PHONE)是一种便利的设备,在入网的移动通信系统所提供的服务区(SERVICE AREA)内自由移动,随时随地与已无线连接的对方进行通信,个人可以携带,并在移动的同时进行通信。 [0003] 作为接收发送通信信号的信道资源,上述移动通信系统使用无线频率资源,上述无线频率资源是有限的天然资源,为了发送或接收一个通信信号,需要独占一定带宽的无线频率资源,用作通信信道。 [0004] 现在已经开发并实际应用了多种方式,以保障更多的便携终端同时占有上述有限的无线频率资源并用作通信信道,例如,目前韩国及美国和亚洲多个国家使用的码分多址(CDMA:CODE DIVISION MULTIPLE ACCESS)方式,以欧洲为中心的多个国家使用的GSM(GSM:GLOBAL SYSTEM FOR MOBILE COMMUNICATION)方式,便是其中的代表性方式。 [0005] 上述码分多址(CDMA)方式是一种利用代码区分多条信道、可同时占用相同频带的方式,上述GSM方式是时分多址(TDMA:TIME DIVISION MULTIPLE ACCESS)方式的一种,设置时间差占有同一频率,实现共享。 [0006] 上述GSM方式是把使用便携终端(MS)所需的几乎所有信息均记录于SIM(SUBSCRIBER IDENTITY MODULE)中,包括加入移动通信服务商并注册的便携终端电子序列号(ESN:ELECTRONIC SERIAL NUMBER)和分配的固有电话号码(TEL NO)及结算帐号等。 [0007] 上述SIM以插拔式安装于GSM终端,当拿着上述SIM移动到邻近国家的区域时,如果在邻近国家租赁GSM终端,安装上上述自己的SIM,便仍可使用原来使用的固有电话号码进行通信。 [0008] 即,在上述GSM方式中,SIM内已经记录有使用便携终端所需的所有信息和个...

AI Technical Summary

Problems solved by technology

[0029] However, the GSM system portable terminal (10) based on the prior art constituted as above has the following problem, that is, when the above-mentioned portable terminal (10) is lost, or when the removed SIM is lost when moving to a neighboring country, other people Even if the above-mentioned portable terminal or SIM is used to carry out unauthorized communication and movement, it cannot be prevented until the communication service provider accepts the report of loss.

[0030] In particular, there is also the following problem. From the perspective of mobile communication service providers, when it is a credit-delinquent who has not paid the communication usage fee for a long time, the communication cannot be cut off immediately.

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