JP2005130420A - System for collecting distributed data by applying slave numbers to multiple cellular phones with the same representative number - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To save a basic charge effectively for automatically collecting charges or information through a method capable of handling a number of distributed cellular phones similarly to one cellular phone for a telephone exchange station. <P>SOLUTION: The same representative number is applied to a number of cellular phones so that all the cellular phones called with the representative number are turned into receiving status and a master station transmits a slave number in the form of data to select a target cellular phone. When switching to the next cellular phone, a frequency of radio waves transmitted by the first cellular phone is used. The master station simultaneously notifies the frequency of radio waves to all the cellular phones in the receiving status. Switching is instantaneously performed, thereby eliminating radio wave interruption. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed Description of the Invention

  The present invention relates to a method of collecting data at various locations at one location by a mobile phone attached to the dispersed location.

Conventionally, when collecting data at various locations distributed by a mobile phone at one location, it has been necessary to attach mobile phones having telephone numbers corresponding to the number of locations.
In the conventional wired telephone, for the same purpose, there are many child numbers under the representative number and switched by an exchange.
However, it is not possible to switch with a switchboard in mobile phones that are distributed.

Problems to be solved by the invention

  The present invention eliminates the disadvantage that a large number of dispersed mobile phones have individual telephone numbers, so that all basic charges are taken, and when viewed from the central office, a large number of mobile phones are the same as one mobile phone. The goal is to develop a system that looks like this and to reduce the basic telephone charges.

Means for solving the problem

  In the present invention, when a child number to be transmitted, received, and received as data instead of a station number is added under the representative number and called from the master station with the representative number, all mobile phones are in a reception state and the child number is the parent data. Wait for transmission from the station.

First, the mobile phone, whose child number is called by data from the master station, transmits its own data, and maintains the radio wave transmission state even when the data ends.
Next, the mobile phone called by another child number transmits its own data, and maintains the radio wave transmission state even after the data is over.

The first mobile phone confirms by data that another child number has been transmitted from the master station and stops transmission.
The first mobile phone transmits the frequency and channel of its own radio wave transmitted to the master station, the master station instructs the frequency and channel to all mobile phones, and the frequency of radio waves transmitted by the mobile phone follows this instruction. .
The switching time of mobile phones is short, and radio waves of the same frequency are continuous when viewed from the central office, so that even if a large number of mobile phones are switched, one mobile phone is used continuously. appear.
Thereafter, the data of a large number of mobile phones is transmitted to the master station in the same manner in order.

As another switching method, the first mobile phone starts transmission by calling a child number by data, but the next mobile phone automatically switches to the next mobile phone at a predetermined time.
If the switching fails at this time, the master station knows the failure by disconnecting the phone, calls the mobile phone of the next child number, and then switches to the next mobile phone in order with time as described above.

The switching time is short and all mobile phones use the frequency and channel that they originally used, so it looks like a single mobile phone is transmitting from the central office.
The switching status is informed to the master station by entering the child number information in the mobile phone data.

FIG. 1 is a block diagram showing the basic configuration of the present invention.
In this figure, 1, 2, 3, 4, 5, 6, 7... Are mobile phones, T is a telephone station M, and a master station.

Cellular phones (1, 2, 3, 4, 5, 6, 7...) Have the same representative number, and child numbers that are transmitted and received by individual data are attached below the numbers. .
When the master station (M) sends the representative number to the telephone station (T), all the mobile phones (1, 2, 3, 4, 5, 6, 7,...) Are in a receiving state.
Next, when the master station (M) transmits the child number of the cellular phone (1) as data, the cellular phone (1) transmits its own data.

At this time, the cellular phone (1) puts information on its radio wave transmission frequency and channel into the data, but it is also possible to increase the reliability by including information on its own child number.
Next, when the master station (M) transmits the child number of the mobile phone (2) as data, the mobile phone (2) transmits its own data.

When switching between the cellular phone (1) and the cellular phone (2), the same radio wave and channel are used so that the radio wave is not interrupted when switching.
In the following order, the mobile phone (3), (4),.
Finally, if the master station hangs up and indicates the end with data, the transmission of a series of data ends.

  Since the master station (M) can send the next child number as data at any time regardless of the transmission of the mobile phone, the next child number is sent immediately before the data is completed, thereby shortening the time for switching radio waves. To do.

In addition, there is a method of automatically switching according to time as a means for switching a mobile phone.
When the master station (M) calls the cellular phone (1) with the child number and a certain time has elapsed, the cellular phone (M) automatically switches to the cellular phone (2).
Each mobile phone transmits its own data during this fixed time.
Cellular phones are switched one after another for a certain period of time, but when switching fails or when a predetermined time has elapsed, the master station (M) detects this and sends the next child number, etc. Take measures.

About other things, it is the same as the case where a master station (M) transmits a child number whenever it switches a mobile telephone.
It is generally known to have two or more representative numbers of mobile phones to make complex signal combinations, change the station number and child number from the master station (M), techniques to increase communication reliability, secret talk technology, etc. Appropriate methods are used.

The invention's effect

According to the present invention, a large number of distributed mobile phones can be handled in the same way as a single mobile phone when viewed from the telephone office. spread.
For example, meter reading work for electricity, gas, water supply, sewage, etc., weather forecast information, failure point detection, public opinion survey, notification of occurrence of emergency, taxi dispatch, etc.

It is a block diagram which shows the system of this invention.

Explanation of symbols

1, 2, 3, 4, 5, 6, 7, ... mobile phone T telephone station M parent station

Claims (4)

A large number of mobile phones with the same representative number are distributed by assigning child numbers to be transmitted and received as data instead of station numbers, and when the master station calls with a representative number, all mobile phones with that number are in the receiving state. Wait, send data only to the mobile phone whose child number is called by the master station, and even if the data is over, the next mobile phone will be called with the child number and send the signal. Will continue to be sent.
When the child number of the next mobile phone is called by data from the master station, the next mobile phone transmits data on the same frequency and channel as the first mobile phone, and the first mobile phone stops sending radio waves. .
In this way, the master station calls the mobile phones attached to the dispersed locations one after another.
A method of collecting data by attaching a large number of mobile phones having the above characteristics to distributed locations A large number of mobile phones with the same representative number are distributed by assigning child numbers to be transmitted and received as data instead of station numbers, and when the master station calls with a representative number, all mobile phones with that number are in the receiving state. Unless otherwise instructed by the master station, the mobile phone transmits data using radio waves and channels of the same frequency in the order determined one by one at regular intervals.
A method of collecting data by attaching a large number of mobile phones having the above characteristics to distributed locations The frequency sent by the mobile phone of the first called child number is transmitted to the master station, and the master station sends this frequency to all mobile phones having the same representative number. Use frequency.
A method of collecting data by attaching a large number of mobile phones having the above characteristics to distributed locations When the master station calls with a representative number, all mobile phones with that representative number are in the receiving state, and while the receiving state continues, all of these mobile phones receive data, encryption, Receiving audio signals, video signals, etc.
A method of collecting data by attaching a large number of mobile phones having the above characteristics to distributed locations

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