KR20000003123A - Mobile telephone having cell number and channel situation data automatic transmission function - Google Patents

Abstract

The present invention transmits data of a base station cell characteristic value (number, field strength, time delay) to communicate with a mobile phone on a digital map without adding additional hardware for calculating and transmitting a location such as a GPS satellite receiver to the mobile phone. The system is configured to identify the location of a mobile phone and transmit a text message. The mobile phone always registers a location with a base station through a control channel and monitors the state of nearby base stations because a handoff occurs. It provides a location tracking and command system using a mobile phone by configuring the same cell-related data to be automatically transmitted to the control center every set transmission cycle or whenever the cell data is changed.

As described above, a mobile phone having a function of automatically transmitting cell number and channel environment data around the mobile phone according to a set transmission mode performs basic mobile phone configuration and functions without additional hardware and maintains its appearance. In the field of logistics, sales, crime prevention, after-sales service, courier service, it provides the location and command function of important members, and when it operates, there is an advantage that it can respond quickly to customer's needs.

Through this, the location of the member carrying the mobile phone can be identified in real time on the electronic map from the control center's computer, and the text command can be issued. The location of police officers can also be identified, contributing to security, and an optimal delivery system can be established to avoid unnecessary waste in logistics, and logistics costs are expected to be reduced. In the sales field, the salesperson who is closest to the customer's requirements is expected. By instructing them to take action, it is expected to contribute greatly to service improvement.

Description

Mobile phone with automatic cell number and channel environment data transmission

In order to properly utilize the resources (transportation equipment) owned by a transportation company that mainly focuses on moving people or goods, it is necessary to know the current location and speed, whether the cargo is loaded, the destination, and other conditions at the present time. Decisions can be made, and sales and sales organizations can maximize profits by locating their members in real time and giving them immediate orders to reflect customer needs.

Field of invention

As the movement of all resources increases and the range of activities expands, the necessity of a system that can identify and command the current position of human resources in real time is increasing. This location and command system is essential for areas maintained by human activities such as security and security organizations, after-sales service organizations, delivery and sales organizations. To this end, a means for identifying each location and a wireless network for transmitting location data to a management center are required. To solve this problem, a method of embedding a GPS satellite receiver in a mobile phone is known to be the most advanced. However, a patent application has been filed by the present inventors on a technology capable of detecting a location by using base station environment data (cell number and characteristic value) that communicates with a mobile telephone even without a GPS satellite receiver embedded in the mobile telephone. The present invention relates to a mobile phone having a function of automatically transmitting base station environment data to a set control center whenever a periodic or base station characteristic value is changed so that the mobile phone can calculate a position at the control center. Can solve the current consumption, size, and cost problems. That is, the mobile phone system can track the location of the mobile phone with an error range within 1 km within the radius of the base station only with information of which base station it belongs to. The error range of 1 km is 2 minutes if the moving object moves from the downtown to an average of 30 km. It is easy to apply to logistics and sales management system rather than vehicle navigation system that needs accurate position calculation with distance that can reach accuracy, and does not need separate device other than mobile phone, and patented by the inventor for basic technology Application (97-55216) has been made.

If you need to accurately measure the position of the moving object, you can calculate the position of the moving object by attaching a GPS satellite receiver.However, by using the data communication service additionally provided by the digital mobile phone, the number and characteristic values of cells communicating with the mobile phone can be determined. If the function is designed to send according to the transmission period set in the place or to transmit automatically when the characteristic values of the cell change, the control center can identify the position of the mobile phone and give a command regardless of the switching system. It was done.

* Background of the invention

There is a position calculation technology using GPS satellites that can be applied for logistics and business management using the technology currently applied. The technology began to be built by the US Department of Defense for military purposes, and its technical content is now able to accurately measure its position using three or four satellites floating in the air. It uses the same method as it used to measure its position using. Recently, the mobile phone is equipped with a GPS satellite receiver for this purpose, but it is difficult to keep up with the trend of miniaturization of the mobile phone and shorten the usage time of the battery due to the large current consumption of the GPS circuit. Even if the location is tracked with hundreds of meters instead of tens of meters, like GPS satellite receivers, the application of GPS satellite receivers is not necessary in many fields of utilization. If you can use general mobile phone for general purpose and additionally handle location tracking and command of affiliated mobile phone on control center's electronic map, you can provide the most efficient system in logistics, sales and security. The present invention has been made in that respect.

In other words, if the position value of the mobile body is transmitted to the control center using the mobile phone as a data communication method supported by the mobile phone as in the present invention, the position of the mobile body can be determined at the center even without using a communication network such as a radio. The location calculation method is a mobile phone location tracking system configured to transmit the cell number of the base station and the channel environment data, and the control center calculates the location by simulation and displays it on the map, and separately attaches GPS satellite receiver or hardware to the mobile phone. It is a mobile phone which adds an automatic transmission function to a phone control program without the need, and through this, a corporate organization member location management and command system based on a mobile phone can be provided.

* Purpose of the invention

The development of mobile communication technology over the past several years has enabled the digital communication of analogue methods and the data communication in mobile phones, creating various value-added services such as text services. Reached. Since the characteristics of mobile phones provide convenience for humans to carry and communicate while moving, mobile phones are rapidly becoming universal. Organizations such as sales, logistics, and crime prevention, which utilize human resources, are essentially utilizing wireless communication networks. As the above-mentioned technology advances, it is changing from a conventional radio to a mobile phone. As such, mobile phones are used for business purposes, but at the moment, they are only simple voice calls or text services that are generally difficult to use. The present invention tracks the location of mobile phones in the control center and displays them on an electronic map. The purpose is to provide a location tracking and command system that can be unloaded through a computer.

In a system in which a mobile phone transmits characteristic values of a base station communicating without a GPS satellite receiver to a control center, the control center calculates a position within a predetermined error range through a base station coordinate value and a radio wave simulation and displays it on a map. It is an object of the present invention to provide a mobile phone which automatically transmits a cell characteristic value to a predetermined access number periodically or when a cell environment changes. Another object of the present invention is to receive a cell characteristic value of the mobile phone and display it on a computer electronic map, while establishing a database on the location of each mobile phone and a control system that can give a text command to each mobile phone To provide.

Summary of the Invention

The present invention transmits data of a base station cell characteristic value (number, field strength, time delay) to communicate with a mobile phone on a digital map without adding additional hardware for calculating and transmitting a location such as a GPS satellite receiver to the mobile phone. It is a system configured to identify the location of a mobile phone and transmit a text message. The mobile phone always registers a location with a base station through a control channel and monitors the status of neighboring base stations because the handoff occurs. It is possible to provide a location tracking and command system using a mobile phone by configuring the same cell-related data to be automatically transmitted to a control center every set transmission period or whenever cell data is changed. Hereinafter, the present invention will be described with reference to the accompanying drawings. When described in detail as follows.

No identifier above

1 is a schematic diagram showing the configuration of a mobile telephone to which an automatic cell number and channel environment data transmission function is provided.

2 is a program flow diagram of a mobile telephone to which an automatic cell number and channel environment data transmission function is provided.

Explanation of symbols on the main parts of the drawings

1: mobile phone 2: antenna

3: speaker 4: display means

5: microphone 6: keyboard

In order to calculate the location of the mobile phone, the method of embedding the GPS satellite receiver and reading the coordinate value and transmitting it to the control center is the most common in that it does not need to calculate the location separately from the accuracy and the center. There are limitations in terms of volume, current consumption and price. Accordingly, the present inventors have made a number of patent applications for various fields of calculating and applying the location using the base station information of the mobile phone (Patent applications 96-1646, 96-7285, 96-22134, 97-4555). No. 97-11613, 97-16991, 97-23070, 97-55216, 97-57041), and the basic basis for making these position calculations is based on the reference coordinates and distance of each base station cell The position is calculated by the trigonometry using the propagation intensity data or the time delay accordingly. The mobile phone monitors the pilot channel, which is an unmodulated, direct sequence spread signal that each base station continuously transmits as one of the forward channels. A reference is obtained and the signal strength of this channel is used to determine call transitions between base stations. In order to calculate the location using the characteristics of the base station, the pilot channel PN sequence offset value (PN) for the base station in relation to the cell unique number, the identification number value (NID) of the network which is a subset of the base stations in the mobile telephone system, and the current base station BASE-ID is required, and neighbor base station pilot channel PN sequence offset value is additionally added. This data is retrieved and stored by the mobile phone according to the communication standard. Where the unique number is included in the cell's propagation radius is calculated in which cell, the cell channel environment data is needed to estimate the position more accurately. The distance is calculated from the reference points of the base station cell through the cell channel environment data, and the position calculation is performed by trigonometry. The data for this is generally Ec / Io and PN DELAY values. PN DELAY means the arrival time of each cell pilot based on the terminal time, and the pilot strength Ec / Io represents the ratio of the received pilot energy to the total received energy. The experimental distance can be seen. Since the mobile phone moving from <base station 1> of the existing cell to <base station 2> of the new cell eventually leaves the channel control of <base station 1>, <base station 1> detects the received signal field strength (RSSI) of the mobile phone. The mobile telephone is instructed to report on the reduced field strength of the received signal, and the neighboring base stations are informed of the signal strength of the mobile telephone. If one base station receives a higher signal strength than the other base station, the base station changes the base station to maintain the optimal call by changing the channel to the mobile phone. In this case, the cell number and the channel environment data are different. Regardless of the transmission period, send data to the control center. The mobile phone monitors both the active set indicating the pilot offset of the forward channel being monitored by the paging channel and the neighbor set consisting of the offsets of the candidate pilot channels for handoff. Apart from the method of estimating the position of the mobile phone using only such fixed data, when the transmission data is composed, the tracking state can be reduced by collecting the change state of the cell number and the environmental data to indicate the trajectory state. In addition, when the mobile station operator base station information is retrieved and sent, the reference base station cell information is increased, thereby reducing the tracking error.

A schematic configuration diagram of a mobile telephone to which cell number and channel environment data automatic transmission according to the present invention is provided is shown in FIG.

In order to transmit the cell number and channel environment data monitored by the formation of a call path in the mobile phone 1, the automatic cell information transmission menu is inputted to an external device on the LCD screen or through a communication line. The menu provides a calling number input means, a unique code input means, and a transmission cycle setting means. Calling number input means indicates the address or telephone number to which the data to be configured, the unique code indicates the phone number or serial number and name of the mobile phone to indicate its number. The transmission period is configured to transmit by a certain time, stop transmission, or transmit once manually according to the subscriber's purpose, and select a transmission method only when the channel environment data changes significantly, such as handoff. As a transmission method, short message communication or two-way data communication provided by a mobile phone is used. The data composition consists of setting the calling number at the time of data transmission, based on the unique number, the cell number, and the electric field strength, and adding a time delay value if necessary. Additional data for more accurate location estimation include the addition of the monitored cell number and channel environment data of other mobile telephone operators and the addition of cell number and channel environment data indicating several past movement trajectories due to the changed handoff. This can be presented.

Currently implemented mobile phone location tracking center demodulates data transmitted to modem through wired telephone line or collects data by connecting switch and dedicated line in case of wireless data terminal or frequency common communication method. By directly connecting the computer and the mobile phone to the data transmission and reception unit, if the address of the data sent from the vehicle's mobile phone is the mobile phone number connected to the computer, the data can be collected wirelessly without a separate device, eliminating the cost of establishing a leased line. The vehicle position can be managed at any place regardless of the telephone line. However, if there is a large amount of data, it should be constructed as a leased line.

2 is a program flow diagram of a mobile phone to which the cell number and channel environment data automatic transmission function of the present invention is assigned, which is in a standby state after initialization, and knows the set calling number, unique code, and transmission cycle value, and moves from the control center. If a separate code is requested to transmit the location data through the telephone network, or if the automatic transmission mode has passed the set time, or if the cell environment is changed due to handoff or movement of the mobile phone, the transmission mode can be transmitted manually. If selected, it reads the base station cell data characteristic value consisting of cell number, base station number, electric field strength, etc., and adds additional data to reduce calling error, unique code and position estimation error if necessary, and provides data communication provided by mobile phone. It transmits to control center by the method and repeats transmission until receiving the end code or completing the transmission. It was so.

As described above, a mobile phone having a function of automatically transmitting cell number and channel environment data around the mobile phone according to a set transmission mode performs basic mobile phone configuration and functions without additional hardware and maintains its appearance. In the field of logistics, sales, crime prevention, after-sales service, courier service, it provides the location and command function of important members, and when it operates, there is an advantage that it can respond quickly to customer's needs.

Through this, the location of the member carrying the mobile phone can be identified in real time on the electronic map on the control center's computer, and the text command can be issued. The location of police officers can also be identified, contributing to security, and an optimal delivery system can be established to avoid unnecessary waste in logistics, and logistics costs are expected to be reduced. In the sales field, the salesperson who is closest to the customer's requirements is expected. By instructing them to take action, it is expected to contribute greatly to service improvement.

Although the present invention has been described in detail only with respect to the described embodiments, modifications and variations that are within the spirit and scope of the invention are apparent to those skilled in the art to which the invention pertains and such variations or modifications are limited by the appended claims. You must lose.

Claims (5)

In the mobile telephone (1), the cell information automatic transmission menu is input to an external device on the LCD screen or through a communication line so that the cell number and channel environment data monitored by the formation of a call path can be transmitted. The automatic transmission menu is provided with an automatic call number input function, a unique code input means, and a transmission cycle setting means. According to claim 1, Calling number input means indicates the address or telephone number to which the data to be configured, the unique code is characterized in that the phone number or serial number and name of the mobile phone to indicate its number Means for automatic transfer of mobile telephones According to claim 1, the transmission period to be set is to be transmitted only when a certain time depending on the subscriber's use, stop the transmission, configure to transmit once manually, or when the channel environment data changes significantly, such as during handoff or movement Means for selectively setting the cell information, and when the control center receives the location information request code, configures the cell information and automatically transmits the cell information transmission timing setting means. The method of claim 1, wherein the data specialized configuration to be transmitted to the control center is configured by setting the calling number at the time of data transmission, the unique number, the cell number, and the electric field strength, and adding the time delay value when necessary. Cell information specialized configuration of mobile phone The method according to claim 1, wherein the cell number and channel environment data of other mobile phone providers are added together with the cell information of the cell phone currently monitored, or the cell number and channel environment data indicating several past movement trajectories mainly due to handoff. Cell information specialized composition method of mobile phone, characterized by minimizing position estimation error