KR100478914B1 - System for Collecting Parameters of Communication Condition Using a Navigation in Realtime and Method thereof - Google Patents

Abstract

The present invention collects and transmits a communication propagation environment in a region where a mobile terminal is currently located by using a hands free (Global Position System) in which hands free connected to a mobile terminal provides location information of the terminal. The present invention relates to a real-time communication propagation environment collection system and method capable of sharing data on a communication propagation environment at any place by making a database.

According to the present invention, when the hands-free 212 to which the mobile terminal 126 is connected is mounted on the navigation vehicle 210 equipped with the navigation device 214, and the navigation vehicle 210 enters the service area of the base station 220, When the mobile terminal 126 performs an initial registration operation or a call request for the base station 220 that is in charge of the area where the mobile terminal 126 is currently located, the hands-free 212 according to the radio wave environment measurement program, the mobile terminal 126 and the base station 220 Check and propagate the radio wave environment to the base station 220, and the base station 220 is transmitted to the central control server 160 via the mobile communication network and the Internet 240. The central control server 160 stores and manages the received radio wave environment information in the radio wave environment database 170. Afterwards, the user 230 can remotely access the central control server 160 through the Internet 240 to check the radio wave environment of the region he wants to receive.

According to the present invention, the navigation vehicle 210 equipped with the navigation device 214 is provided with a hands-free 212 capable of easily conducting a wireless call, thereby providing a conventional radio wave environment measurement vehicle 120 or a manpower required for measurement. And the need for direct purchase of DM has significantly reduced its cost.

In addition, since the real-time propagation environment of each base station scattered throughout the country can be simultaneously collected from the navigation vehicle 210, the processing period is greatly reduced. In addition, there is no need for pre-optimization activities to improve the propagation environment, and it can be utilized as sufficient back data when designing a new network.

Description

System for Collecting Parameters of Communication Condition Using a Navigation in Realtime and Method

The present invention relates to a system for collecting a real-time communication propagation environment in a mobile communication network and a method for collecting the same, and more particularly, an automatic navigation system in which hands free connected to a mobile terminal provides location information of a terminal. Real-time communication propagation environment collection system and method that can collect data on communication propagation environment at any place by collecting and transmitting the communication propagation environment of the area where the mobile terminal is currently located and transmitting it to the central control system. It is about.

The mobile communication system refers to a system that provides a mobile communication service, such as a telephone call, to users having a mobile terminal. For such a communication service, a mobile communication service provider divides a service area and has a base station for each area to control the service area. In addition, the mobile communication service provider should measure the radio wave environment of each area while reflecting the improvement of the quality of the mobile communication while loading and moving communication measurement equipment in the vehicle to determine whether each service area is communicating smoothly. have. Here, the radio wave environment state refers to a state of a communication element required for wireless communication between a base station and a mobile terminal located in an area controlled by the base station, and includes RF energy, a frame error rate, and a vocoder rate. ), And the state of pilot power.

1 is a configuration diagram schematically showing a configuration of a mobile communication system for measuring a radio wave environment of a conventional region.

The conventional mobile communication system for measuring radio wave environment is GPS satellite 110, radio wave environment measurement vehicle 120, base station 130, base station controller 140, mobile communication switching center 150, central control server 160, radio waves Environment database 170; Here, the radio wave environment measurement vehicle 120 internally includes a GPS receiver 122, a personal computer (PC) 124, a mobile terminal 126, and the like.

The GPS satellite 110 provides location information where the GPS receiver 122 is located. The GPS receives signals from a plurality of satellites such as the GPS satellites 110 to calculate the position of the radio wave measuring vehicle 120 which is a mobile station. That is, the GPS receiver 122 of the radio wave measurement vehicle 120 measures the distance from three or more GPS satellites 110, so that the position of the mobile station itself on the plane can be known. With four or more satellites, you can measure three-dimensional positions. The distance between the GPS satellite 110 and the mobile station is then calculated as the time it takes for radio waves to arrive. The time signal of each satellite is managed by the ground control station, and the transmission time can be known by measuring the time difference between the time signal received by the mobile station and its own clock. Thus, conventionally, the user's current position using a closed form solution, least square solution, or Kalman filter after receiving pseudo range measurements from four GPS satellites 110 to calculate accurate position information. Will be calculated. Since these methods are well known techniques, detailed descriptions are omitted.

The radio wave environment measurement vehicle 120 includes a radio wave environment measurement equipment in a mobile vehicle, and measures the radio wave environment of each service area while circulating each service area. The GPS receiver 122 receives location information currently located from the GPS satellites 110. The PC 124 has a program for measuring the radio wave environment, and stores the measured radio wave environment information as data. The mobile terminal 126 performs wireless communication with the base station 130.

The base station 130 checks the position of the mobile terminal 126 to perform transmission and reception of wireless signals to the mobile terminal 126, conversion and encryption / decryption of a communication protocol, and the base station controller 140 includes a plurality of base stations ( While managing 130, the mobile station 126 performs a function such as allocation control of a communication channel for each mobile terminal 126. In addition, the mobile switching center 150 connects to the public switched telephone network (PSTN) by processing and connecting the call request requested by the base station 130 through the base station controller 140 and processing the signal until the call is completed. It serves to connect the general wired terminal and the mobile terminal 130.

The central control server 160 is a system operated by the mobile operator to measure the communication environment status of each service area and manage the result as data, and the radio wave environment database 170 has data of the propagation environment of each service area. Is stored as.

In the mobile communication system configured as described above, the administrator moves to the radio wave environment measurement vehicle 120 to measure the radio wave environment of the service area in which the new base station newly installed is located. When the radio wave environment measurement vehicle 120 arrives where the new base station is located, the manager stores the current location information received from the GPS satellite 110 in the PC 124. The administrator executes a DM (Diagnostic Monitor), which is a program for measuring a radio wave environment using the PC 124. The DM is a terminal diagnostic monitor program, which is connected to the mobile terminal 126 using a serial data cable to display a communication state with the base station 130 in a graphic chart, and to perform data analysis.

The manager stores the current location information received by the GPS receiver 122 from the radio wave environment measurement vehicle 120 in the PC 124, and also checks the communication environment status with the base station 130 using the mobile terminal 126. To turn on the power of the new base station. In order to optimize the communication of the new base station, the manager checks the communication environment with each item as described above while looking at the signal level of the new base station using the DM. And improvement work is performed about each item of the checked radio wave environment. After the improvement is performed, the data is analyzed and stored in the PC 124. The manager moves the radio wave environment measurement vehicle 120 to the central control server 160. The data on the radio wave environment measurement for the new base station stored in the PC 124 there is encrypted and converted together with the location information, converted into the central control server 160 and stored in the radio wave environment database 170. You should refer to them when improving the radio environment. Therefore, it is not available to the general public and only limited administrators and experts can manage it.

That is, in the system as described above, the vehicle must be operated to check the radio wave environment of each service area, there must be a manpower necessary for measurement, and measurement equipment must be provided. In addition, it takes a long processing time because it is measured while traveling each service area. In addition, in connection with GPS, a linkage and air conditioning system with a company related to navigation is required, and a change such as updating a software program of the PC 124 carried in the radio wave environment measurement vehicle 120 is required. And, if the administrator in the area does not know the state of the radio wave environment of the service area, the central control server (160) to contact the request for the data about the radio environment to obtain the inefficient problem in managing the radio wave environment of each service area There was this.

In order to solve the above problems, the present invention, hands free connected to the mobile terminal (GPS) collects the communication propagation environment of the area where the mobile terminal is currently located by using GPS and transmits it to the central control server to make a database at any place. The present invention provides a real-time communication propagation environment collection system and method for sharing data on a communication propagation environment.

In order to achieve the above object, the present invention provides a global positioning system (GPS) satellite, a mobile terminal, a mobile communication network for transmitting and receiving a radio signal to and from the mobile terminal, and a radio wave of each service area of the mobile communication network. A communication propagation environment collection system having a central control server that stores and manages an environmental state as data in a database, comprising: an Internet interworking function (IWF) for connecting the Internet, the mobile communication network to the Internet, and a GPS receiver And a communication propagation environment measurement program, which collects communication propagation environment information between the mobile terminal and the mobile communication network at a current location, through the mobile communication network and the Internet. Hands-free with a function to transmit to the central control server It characterized in that it comprises.

In addition, the present invention provides a communication propagation environment collection method having the above configuration, (a) the mobile terminal executing a registration procedure or a call request to the mobile communication network, (b) the hands-free mobile terminal Detecting (c) executing a radio wave environment measurement program in the hands-free; (d) receiving the current position information of the mobile terminal from the navigation device by the hands-free; Hands free checking the radio wave environment state between the mobile terminal and the mobile communication network; and (f) transmitting the radio wave environment check data and the location information collected by the hands free to the central control server through the mobile communication network and the Internet. Transmitting (g) storing and managing the radio wave environment check data in a database by the central control server; Characterized in that it comprises a.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the drawings.

2 is a block diagram showing a real-time communication propagation environment collection system according to an embodiment of the present invention. In Fig. 2, the same components as those in Fig. 1 are denoted by the same reference numerals and detailed description thereof will be omitted.

The real-time communication propagation environment collection system according to the present invention includes a navigation vehicle 210, a hands free 212, a navigation device 214, a base station 220, a user 230, the Internet 240, And a central control server 160 having an interworking device (IWF: IWF) 250 and a radio wave environment database 170.

That is, according to the concept of the present invention, the hands-free 212 connected to the mobile terminal 126 is mounted on the navigation vehicle 210 equipped with the navigation device 214, and the navigation vehicle 210 is located in the service area of the base station 220. When entering into and performing an initial registration operation with respect to the base station 220 which is in charge of the area where the mobile terminal 126 is currently located, the hands-free 212 according to the radio environment measurement program, the mobile terminal 126 and the base station ( Checking the radio wave environment state between the 220, and transmits the current position information and the collected radio wave environment data by the navigation device 214 to the base station 220, the base station 220 through the mobile communication network and the Internet 240 to the central Transmission to the control server 160. The central control server 160 stores and manages the received radio wave environment information in the radio wave environment database 170. Afterwards, the user 230 can remotely access the central control server 160 through the Internet 240 to check the radio wave environment of the region he wants to receive.

The navigation vehicle 210 is a vehicle such as a passenger car used by a general user equipped with the navigation device 214. The navigation vehicle 210 is equipped with a hands-free 212 that allows the user to conveniently use the mobile terminal 126 for wireless communication while the user is driving.

The hands-free 212 is connected to the mobile terminal 126 as well as to the navigation device 214, and there is a built-in program for measuring the radio wave environment therein so as to check the radio wave environment of the mobile terminal 126 to determine the base station ( 220). At this time, the information of the mobile terminal 126 is transmitted along with the location information received by the navigation device 214.

The navigation device 214 receives location information from the GPS satellites 110 with map information capable of displaying the current location, displays the location information on the map, and transfers the location information to the hands-free 212.

The base station 220 is provided with a program capable of receiving a radio wave environment status signal from the navigation vehicle 210 and receives the position coordinates and the radio wave environment data of the mobile terminal 126 using a traffic channel to the mobile communication switching center 150. To pass.

The user 230 is a general user who accesses the central control server 160 via the Internet 240 using his personal computer and obtains information on the radio wave environment of the region in which he / she wants to receive mobile communication service. . The Internet 240 is a global communication network that provides a communication network to enable data transmission and reception between remote terminals. IWF 250 provides a function for allowing a mobile communication network to connect to the Internet 240.

3 is a block diagram showing an internal functional configuration of the hands free 212.

Referring to the drawings, the hands-free 212 includes a terminal connection unit 310, an audio output unit 320, a microphone 330, a controller 340, a navigation connection unit 350, a key operation unit 360, and a memory 370. And a radio wave environment measurement program unit 380, a power supply unit 390, and the like.

The terminal connection unit 310 is connected to the mobile terminal 126, and the sound output unit 320 outputs a sound signal received by the terminal connection unit 310. Although not shown, the sound output unit 320 is an analog for amplifying a sound signal other than a speaker, a filter for removing noise, or an analog signal when the signal output method of the applied mobile terminal 126 is digital, that is, a digital sound signal. A digital-to-analog converter for converting the signal may be provided.

The microphone 330 inputs a voice signal spoken by a user and transmits it to the controller 340. The controller 340 transmits and receives a voice signal with the mobile terminal 126, receives the location information from the navigation device 214 according to the radio wave environment measurement program, checks the radio wave environment of the mobile terminal 126, and the base station together with the location information Control the function to send to 220.

The navigation connection unit 350 is connected to the navigation device 214, and the key operation unit 360 is provided with a plurality of keys for selecting various supported functions. Preferably, although not shown in the key control unit 360, a call key, a recording key, and a channel selection key are provided in addition to the volume control key. The memory 370 temporarily stores the location information transmitted from the navigation device 214 or temporarily stores the radio wave environment state transmitted from the mobile terminal 126 as data.

The radio wave environment measurement program unit 380 stores an RDM (Radio Diagnostic Monitor) program for measuring the radio wave environment. The RDM program checks the level of a received signal, a state of RF energy, a frame error rate, a vocoder rate, a pilot power, and the like. The power supply unit 390 is a power cord (not shown) connected to an external power source, preferably a power source supplied from a vehicle, to receive power, and the power input by the power cord is required by each element of the apparatus. Supply it by converting it into voltage.

4 is a block diagram illustrating an internal functional configuration of the base station 220.

The base station 220 includes an antenna 410, an amplifier 412, a modulator 414, a low noise amplifier 416, a demodulator 420, a baseband processor 422, a LAPDm processor 424, and a program memory. 426, an A / D converter 430, a control unit 432, a LAPD processing unit 434, and a data memory 436.

The antenna 410 transmits and receives data wirelessly with the mobile terminal 126 and amplifies the frequency signal modulated by the modulator 414. The modulator 414 modulates the transmission data output from the baseband processor 422 into a predetermined frequency signal, and the low noise amplifier 416 a low noise amplifier for amplifying the frequency signal received by the antenna 410. Noise Amplifier). The demodulator 420 demodulates the original code signal from the frequency signal input from the low noise amplifier 416.

The baseband processor 422 performs interleaving, block coding, and convolution coding on data transmitted and received by the modulator 414 and the demodulator 43, and performs a LAPDm processor. 424 processes control data transmitted and received with the mobile terminal 126 according to the LAPDm standard.

The program memory 426 stores an operation program for receiving radio wave measurement data from the mobile terminal 126 while performing initial communication with the mobile terminal 126 that has entered the service area. The A / D converter 430 converts the signal demodulated by the demodulator 420 into digital data and transmits the signal to the controller 432 as data corresponding to the received power level. This is provided for the base station selection or the hand over function of the mobile terminal 126.

The control unit 432 controls the use state of the base station by transmitting and receiving data to and from the base station controller 140 by the LAPD processing unit 434, and in particular, receives the radio wave environment state measurement data from the mobile terminal 126, thereby transmitting the mobile communication switching center 150. To pass. The data memory 436 stores various processing data related to the operation of the controller 432.

Next, the operation of the real-time communication propagation environment collection system configured as described above will be described in detail with reference to the flowchart shown in FIG. 5.

First, in a state in which a hands-free 212 having a mobile terminal 126 connected to a navigation vehicle 210 equipped with a navigation device 214 is provided, a user manages the navigation vehicle 210 by the base station 220. It is assumed that the process is located in the service area.

In the mobile terminal 126, when the user turns on the mobile terminal 126, the control unit 432 of the mobile terminal 126 receives the broadcast channel (BCCH) from the base station 220 to A / D After identifying the base station 220 to which it belongs based on the level of each demodulation signal inputted to the converter 430, the subscriber information is passed through the baseband processor 422 and the demodulator 420 according to the LAPDm protocol. The registration procedure is performed by transmitting its information to the competent base station 220.

When the base station 220 receives the terminal information from the mobile terminal 126, the base station controller 220 transmits the terminal information to the base station controller 140. The base station controller 140 transmits the terminal information to the authentication center (not shown) through the mobile communication switching center 150. Is sent to confirm the registration status of whether the mobile terminal 126 is registered properly.

Here, when the control unit 432 of the base station 220 receives a signal indicating that the mobile terminal 126 is normally registered from the base station controller 140 and an encryption code that can be used by the corresponding terminal, the control unit 432 receives the corresponding mobile terminal. 126 is registered in the enabled state (S502).

Subsequently, when a call request is received from the mobile terminal 126, the call control is executed accordingly, and when a signal of a predetermined level or less is input from the A / D converter 430, it is reported to the base station controller 140. When the signal for handover is received from the base station controller 140, the signal is sent to the terminal to perform the handover operation.

Meanwhile, the hands-free 212 connected to the mobile terminal 126 detects a registration operation of the mobile terminal 126 (S504). The sensing operation may be sensed by a change in the amount of power of the mobile terminal 126 or an operation of recognizing transmission and reception of data through a broadcast channel. When the registration operation of the mobile terminal 126 is detected with respect to the base station 220, the controller 340 of the hands-free 212 drives the radio wave environment measurement program in the radio wave environment measurement program unit 380 (S506). The hands-free 212 performs a location information request for notifying the current location of the navigation device 214 connected to the navigation connection unit 350 (S508).

The navigation device 214 calculates the current position coordinate value by calculating and processing the coordinate values of longitude and latitude received from the GPS satellite 110, and transmits the current position coordinate value to the hands-free 212. .

When the hands-free 212 receives the location information data from the navigation device 214 (S510), the hands-free 212 stores the received location information data in the memory 370 (S512). Subsequently, the controller 340 of the hands-free 212 checks a radio wave environment state between the mobile terminal 126 and the base station 220 (S514). That is, the received signal level, the radio frequency (RF) energy, the frame error rate (Frame Error Rate), the vocoder rate (Vocoder Rate), the pilot power (Pilot Power) and the like state is checked.

The controller 340 of the hands-free 212 reads the current position information data from the memory 370 and transmits it to the base station 220 together with the radio wave environment check data (S516).

In the base station 220, when the radio wave environment check data is received through the antenna 410, the low noise amplifier 416, the demodulator 420, and the A / D converter 430, the radio wave is stored in the program memory 426. The radio wave environment check data is transmitted to the base station controller 140 via the LAPD processing unit 434 according to the environmental program. The base station controller 140 transmits the data to the central control server 160 via the IWF 250 and the Internet 240 (S518). Therefore, the central control server 160 stores the received radio wave environment check data in the radio wave environment database 170 (S520).

In this process, the navigation vehicle 210 operating nationwide transmits various kinds of radio wave environment information when the mobile terminal 126 is in a call to the central control server 160 along with the location information in real time, thereby real-time propagation environment at any time. Will be able to collect. The central control server 160 stores and manages the collected radio wave environment check data in a radio wave environment database.

Then, when the user 230 moves to an area governed by any base station and wants to know the radio wave environment of the area, the radio wave environment of the area where the user wants to receive the service is connected to the central control server 160 via the Internet 240. It can be easily obtained.

That is, according to the above embodiment, the hands-free 212 connected to the mobile terminal 126 collects the communication propagation environment of the region where the mobile terminal 126 is currently located by using GPS and transmits it to the central control server 160 to make a database. This allows data about the communication propagation environment to be shared at any location.

It will be appreciated by those skilled in the art that the present invention is not limited to the above-described embodiments, and that various modifications and changes can be made without departing from the technical spirit of the present invention.

As described above, according to the present invention, the navigation vehicle 210 equipped with the navigation device 214 is provided with a hands-free 212 capable of easily performing a wireless call, thereby providing a conventional radio wave environment measurement vehicle 120 or The manpower and DM purchases required for the measurement were not necessary, and the cost was greatly reduced.

In addition, since the real-time propagation environment of each base station scattered throughout the country can be simultaneously collected from the navigation vehicle 210, the processing period is greatly reduced.

In addition, there is no need for pre-optimization activities to improve the propagation environment, and it can be utilized as sufficient back data when designing a new network.

1 is a configuration diagram schematically showing a configuration of a mobile communication system for measuring a radio wave environment of a conventional region;

2 is a block diagram showing a real-time communication propagation environment collection system according to an embodiment of the present invention;

3 is a block diagram showing an internal functional configuration of hands-free;

4 is a block diagram showing an internal functional configuration of a base station;

5 is a flowchart illustrating a real-time communication propagation environment collection method according to an embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

110: GPS satellite 120: radio wave measurement vehicle

122: GPS receiver 124: PC

126: mobile terminal 130, 220: base station

140: base station controller 150: mobile communication switching center

160: central control server 170: propagation environment database

210: navigation vehicle 212: hands free

214: navigation device 230: user

240: Internet 250: IWF

Claims (10)

Global positioning system (GPS) satellites, mobile terminals, mobile communication networks for transmitting / receiving radio signals to and from the mobile terminal, and handling call requests, and storing and managing radio wave environment conditions of respective service areas of the mobile communication network as data. A communication propagation environment collection system having a central control server, An Internet connecting a personal computer to the central control server for a general user to check a radio wave environment of the mobile communication network; An interworking device (IWF) for connecting the mobile communication network to the Internet; A navigation device having a GPS receiver; It is linked with the navigation device, by providing a communication propagation environment measurement program collects the communication propagation environment information between the mobile terminal and the mobile communication network at the current location, and transmits to the central control server via the mobile communication network and the Internet Hands-free with function to do It is configured to include, but the hands-free, A terminal connection unit for connecting with the mobile terminal; A sound output unit for outputting a sound signal received from the mobile terminal to the terminal connection unit; A microphone for inputting a voice signal spoken by a user; Sending and receiving a voice signal with the mobile terminal, receiving location information from the navigation device according to the radio wave environment measurement program, and checks the radio wave environment of the mobile terminal and transmits radio wave environment information along with the location information to the mobile communication network A controller to control the; A navigation connection for connecting with the navigation device; A key control unit provided with a plurality of keys for selecting various functions; A memory for temporarily storing the location information transmitted from the navigation device or temporarily storing the radio wave environment state transmitted from the mobile terminal as data; A radio wave environment measurement program unit for storing a radio diagnostic monitor (RDM) program for measuring a radio wave environment; Power supply that supplies the power required by each element of the device Real time communication propagation environment collection system comprising a. delete The method of claim 1, The mobile communication network includes a base station having a program capable of receiving a radio wave environment status signal from the hands-free and receiving a position coordinate and radio wave environment data of the mobile terminal using a traffic channel. Collection system. delete The method of claim 1, The RDM program is a program for checking at least one of a level of a received signal, RF energy, a frame error rate, a vocoder rate, and a pilot power. Environmental collection system. Global Position System (GPS) satellites, mobile terminals, mobile communication networks for transmitting / receiving radio signals to and from the mobile terminal, and processing call requests, and storing and managing radio wave environment conditions of respective service areas of the mobile communication network as data. A central control server, an Internet, an Inter Working Function (IWF) for connecting the mobile communication network to the Internet, a navigation device including a GPS receiver, and a program for measuring a communication propagation environment between the mobile terminal and the mobile communication network A communication propagation environment collection method comprising a hands-free method for inspecting according to the present invention and transmitting it to the central control server via the mobile communication network and the Internet, (a) executing a radio wave environment measurement program in the hands-free if a registration or call request operation of the mobile terminal is detected; (b) receiving current location information through the navigation device; (c) collecting radio wave environment check data between the mobile terminal and the mobile communication network through the hands free; (d) transmitting the collected radio wave environment check data and the location information to the central control server through the mobile communication network and the Internet; (e) storing and managing the radio wave environment check data received at the central control server in a database; And (f) if there is a radio wave environment status request for a specific region from the personal computer connected to the Internet, extracting the radio wave environment inspection data and transmitting it to the user computer; Real time communication propagation environment collection method comprising a. The method of claim 6, The step (c) is characterized by checking the level of the received signal, or at least one of radio frequency energy, frame error rate, vocoder rate, pilot power. Real time communication propagation environment collection method. delete A device mounted on a navigation device having a GPS receiver for collecting and transmitting communication propagation environment data at a location of a mobile terminal, A terminal connection unit for connecting with the mobile terminal; A sound output unit for outputting a sound signal received from the mobile terminal to the terminal connection unit; A microphone for inputting a voice signal spoken by a user; Send and receive a voice signal with the mobile terminal, receive the location information from the navigation device according to the radio wave environment measurement program, check the radio wave environment at the location of the mobile terminal and transmit the radio wave environment check data along with the location information to the mobile communication network A controller for controlling the giving function; A navigation connection for connecting with the navigation device; A key control unit provided with a plurality of keys for selecting various functions; A memory for temporarily storing the location information transmitted from the navigation device or temporarily storing the radio wave environment state transmitted from the mobile terminal as data; A radio wave environment measurement program unit for storing a radio diagnostic monitor (RDM) program for measuring a radio wave environment; And Hands free, characterized in that it comprises a power supply for supplying the power required by each element of the device. The method of claim 9, The radio wave environment measuring program is a program for checking a state of at least one of a received signal level, RF energy, a frame error rate, a vocoder rate, and a pilot power. free.