JP6323524B2 - Information processing terminal and program - Google Patents

Description

  The present invention relates to an information processing terminal that performs communication using radio waves.

In recent years, portable terminals (see Patent Documents 1 and 2) using a public line network (hereinafter referred to as “wireless communication network”) using wireless communication such as a wireless telephone are variously selected from a wireless communication network to select a place. Data can be received and used. For this reason, portable terminals for various businesses are widely used.
For example, there is a portable terminal used for a task of detecting a meter value (hereinafter referred to as a “meter reading task”) from electricity or gas meter-reading devices installed in a large number of houses scattered over a wide area ( (See Patent Document 3).
Such a portable terminal for meter reading work downloads various data necessary for meter reading work via a wireless communication network, for example, meter reading data one month ago from the database via the wireless communication network, and calculates a charge. be able to. In this case, the portable terminal for meter reading work may transmit and receive various data in real time.

Japanese Patent No. 4563607 JP 2004-318528 A JP 2010-79359 A

However, in the conventional techniques including Patent Documents 1 to 3, since the portable terminal for meter reading work uses a wireless communication network, the data necessary for the meter reading work is real-time when it is out of the communication area. Reception may become impossible, which may hinder meter reading work.
As a countermeasure in such a case, a measure of storing all data necessary for meter reading work in advance can be considered, but since the capacity of the memory provided in the portable terminal for meter reading work is small, It is not realistic to take such measures.
Therefore, the next best way to store some of the data required for meter reading work in the memory of the portable terminal for meter reading work is also conceivable, but information with a large amount of data (image information, etc.) However, the number of meter reading operations per mobile terminal is significantly limited, and it is not realistic to take the next best measure.
Therefore, it is necessary to take measures to ensure that the portable terminal for meter reading work acquires data necessary for the meter reading work before the meter reading work regardless of the radio wave condition in the wireless communication network. Such a measure is widely required for various operations using communication of a portable terminal via a wireless communication network regardless of the meter reading operation. However, there are no effective countermeasures.

It is an object of the present invention to appropriately perform a predetermined process according to the radio wave intensity .

An information processing terminal according to the present invention is an information processing terminal having a wireless communication function, a measuring unit for measuring the current radio wave intensity, and a storage unit in which outline information of the radio wave intensity at a plurality of places is stored in advance. The acquisition means for acquiring the approximate information of the radio field intensity at the current position by referring to, and the intensity level set that the approximate information of the radio field intensity at the current position acquired by the acquisition means may be deteriorated. And the control means starts the measurement of the radio field intensity at the current position and starts monitoring the radio field intensity obtained by the measurement, and the control means performs the radio wave intensity by the monitoring. When a tendency of deterioration of intensity is detected, reception of predetermined data is started at an earlier timing than when the radio wave intensity is good .
In addition, the program according to the present invention refers to a computer of an information processing terminal provided with radio wave intensity measuring means and radio communication means by referring to storage means in which outline information of radio wave intensity at a plurality of locations is stored in advance. If the acquisition means for acquiring the approximate information of the radio field intensity at the current position, the approximate information of the radio field intensity at the current position acquired by the acquisition means is the intensity level set that the radio field intensity may be deteriorated, Causing the measurement means to start measuring the radio field intensity at the current position and to start monitoring the radio field intensity obtained by the measurement, and the control means detects the tendency of the radio field intensity to deteriorate by the monitoring. In this case, the wireless communication means starts receiving predetermined data at a timing earlier than when the radio field strength is good. The features.

According to the present invention, it is possible to appropriately perform a predetermined process according to the radio wave intensity .

It is a block diagram which shows the hardware constitutions of the information processing terminal which concerns on one Embodiment of this invention. It is a functional block diagram which shows the functional structure for performing an electromagnetic wave monitoring process among the functional structures of the information processing terminal of FIG. It is a figure which shows an example of radio field intensity area information required in order to obtain | require the approximate value of the radio field intensity in the present position of the information processing terminal of FIG. It is a timing chart which shows an example of transition of the measured value of a radio field strength used when the information processing terminal of FIG. It is a flowchart explaining the flow of the radio wave monitoring process which the information processing terminal of FIG. 1 which has the functional structure of FIG. 2 performs.

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

FIG. 1 is a block diagram showing a hardware configuration of an information processing terminal according to an embodiment of the present invention.
The information processing terminal 1 is configured as a portable terminal for meter reading work, for example.

  The information processing terminal 1 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a bus 14, an input / output interface 15, an input unit 16, and an output unit. 17, a storage unit 18, a communication unit 19, an antenna 20, a GPS (Global Positioning System) unit 21, and a drive 22.

  The CPU 11 executes various processes according to a program recorded in the ROM 12 or a program loaded from the storage unit 18 to the RAM 13.

  The RAM 13 appropriately stores data necessary for the CPU 11 to execute various processes.

  The CPU 11, ROM 12, and RAM 13 are connected to each other via a bus 14. An input / output interface 15 is also connected to the bus 14. An input unit 16, an output unit 17, a storage unit 18, a communication unit 19, a GPS unit 21, and a drive 22 are connected to the input / output interface 15.

The input unit 16 includes various buttons such as a power button and a radio wave monitoring mode setting button, and inputs various information according to a user's instruction operation.
The output unit 17 includes a display, a speaker, and the like. The display displays text data, table data, image data, and the like, and the speaker outputs sound.
The storage unit 18 is composed of a hard disk, a DRAM (Dynamic Random Access Memory), or the like, and stores various image data.
The communication unit 19 communicates with other devices (not shown) via an antenna 20 via a wireless communication network such as a mobile phone, a public line such as PHS (Personal Handy-phone System), and a network including the Internet. Control communication. The communication unit 19 has a function of acquiring information on RSSI (Received Signal Strength Indicator).
The GPS unit 21 receives GPS signals from a plurality of GPS satellites via a GPS receiving antenna (not shown), and generates position information indicating the current position based on the received GPS signals. As position information indicating the current position of the information processing terminal 1, for example, latitude, longitude, altitude, and the like are calculated.

  A removable medium 31 composed of a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is appropriately attached to the drive 22. The program read from the removable medium 31 by the drive 22 is installed in the storage unit 18 as necessary. The removable medium 31 can also store various data stored in the storage unit 18 in the same manner as the storage unit 18.

FIG. 2 is a functional block diagram showing a functional configuration for executing the radio wave monitoring process among the functional configurations of the information processing terminal 1 having such a hardware configuration.
The radio wave monitoring process refers to a series of processes until a radio wave condition is predicted based on the current radio wave intensity (actually measured value or approximate value) and position information, and data is downloaded based on the prediction result. The radio field intensity (measured values and approximate values), position information, and prediction of radio wave conditions will be described later.

  In the CPU 11, when the execution of the radio wave monitoring process is controlled, the radio wave intensity actual measurement value measurement unit 41, the radio wave intensity approximate value acquisition unit 42, the radio wave state prediction unit 43, and the data acquisition control unit 44 function. .

In one area of the storage unit 18, a radio wave intensity area information storage unit 51 and a data storage unit 52 are provided.
The radio wave intensity area information storage unit 51 stores information (hereinafter, referred to as “radio wave intensity area information”) indicating an outline of relative radio wave intensity for each area that is a target of meter reading work. As the radio wave intensity area information, for example, an area map of communication submitted by a communication carrier or information generated based on the area map is employed. A specific example of the radio wave intensity area information will be described later with reference to FIG.
The data storage unit 52 stores downloaded data.

  The radio field intensity actual value measurement unit 41 acquires the RSSI information from the communication unit 19 as a current radio field intensity measurement value (actual measurement value) and supplies it to the radio wave condition prediction unit 43.

The radio field intensity approximate value acquisition unit 42 is based on the radio field intensity area information stored in the radio field intensity area information storage unit 51 and the position information acquired by the GPS unit 21, and the radio field intensity at the current position of the information processing terminal 1. Is supplied to the radio wave condition prediction unit 43 together with the position information.
Here, the outline of the radio field strength is estimated based on the positional relationship between the location of the communication carrier base station and each position when various conditions such as topography and weather are normal conditions. The approximate value of the radio field intensity at each position.

Hereinafter, the approximate value of the radio wave intensity at the current position of the information processing terminal 1 will be described in more detail with reference to FIG.
FIG. 3 shows an example of the radio field intensity area information necessary for obtaining the approximate value of the radio field intensity at the current position of the information processing terminal 1.

In the present embodiment, as shown in FIG. 3, the range of meter-reading work includes an area L1 where the radio field intensity is “best”, an area L2 where the radio field intensity is “good”, and an outline of the radio wave intensity. It is roughly divided into three types of “deteriorated” region L3.
The “best” region L1 is a region where the radio wave intensity is estimated to be equal to or higher than the threshold value X1 under the normal conditions. That is, when the current position specified by the position information from the GPS unit 21 is in the region L1, for example, ◯ × Plaza 101, the radio wave intensity approximate value acquisition unit 42 sets “best” as the approximate value of the radio wave intensity. ”Is obtained. In this case, it is presumed that the information processing terminal 1 can download data necessary for the meter reading work at high speed to the end without any problem.
The “good” region L2 is a region where the radio field intensity is estimated to be equal to or less than the threshold value X2 less than the threshold value X1 under normal conditions. That is, when the current position specified by the position information from the GPS unit 21 is within the region L2, for example, ΔΔ junior high school 102, the radio field strength approximate value acquisition unit 42 sets “good” as the radio field strength approximate value. ”Is obtained. In this case, the information processing terminal 1 is presumed to be able to download data necessary for meter reading work to the end without interruption of communication to the end. However, it is estimated that the download speed may not be maintained at a high speed.
The “deteriorated” region L3 refers to a region where the radio wave intensity is estimated to be less than the threshold value X2 under normal conditions. That is, when the current position specified by the position information from the GPS unit 21 is within the region L3, for example, □ Δ hospital 103, the radio field strength approximate value acquisition unit 42 sets the “deterioration” as the radio field strength approximate value. ”Is obtained. In this case, it is estimated that the information processing terminal 1 becomes difficult or substantially impossible to download data necessary for business.

  The radio wave condition prediction unit 43 obtains the current radio field intensity measurement value (actual measurement value) acquired by the radio field intensity actual value measurement unit 41 and the current information processing terminal 1 acquired by the radio wave intensity approximate value acquisition unit 42. The radio wave condition is predicted based on the approximate value of the radio wave intensity at the position.

Specifically, the current measured value (measured value) of radio field strength is RSSI (received signal strength) information. On the other hand, the approximate value of the radio field intensity at the current position of the information processing terminal 1 is obtained based on the radio field intensity area information (such as the area map in FIG. 3).
Therefore, the radio wave condition prediction unit 43 predicts and calculates the radio wave strength of the information processing terminal 1 based on the radio wave intensity area information (area map and the like in FIG. 3) and RSSI (received signal intensity) information.

Specifically, in the meter reading work, in the communication area as shown in FIG. 3, the location (each residence) of the meter reading work for each case handled by the meter reading person who operates the information processing terminal 1 is known. It is also known in which order the meter reader moves in each communication location (residence) in the communication area as shown in FIG. In other words, the tendency of transition of the approximate value of the radio wave intensity is known. Therefore, hereinafter, for the sake of simplicity, it is assumed that it is already known that the approximate value of the radio wave intensity tends to change in the order of “best”, “good”, and “deteriorated” values.
In this case, when the approximate value of the radio field intensity at the current position of the information processing terminal 1 is the “best” value, the radio wave condition prediction unit 43 is known to be a “good” value even if it changes in the future. Therefore, it can be predicted that the download necessary for the meter reading operation will not be affected.
On the other hand, when the approximate value of the radio field intensity at the current position of the information processing terminal 1 is a “good” value, the radio wave condition prediction unit 43 is known to change to a “deteriorated” value in the future. Therefore, it can be predicted that it will affect the download necessary for the meter reading work. Therefore, when the approximate value of the radio field intensity at the current position of the information processing terminal 1 is a “good” value, the radio wave condition prediction unit 43 sets a flag indicating that.
When such a flag is set, the radio wave condition predicting unit 43 determines whether the current radio wave intensity measured value (actually measured value), that is, RSSI (received signal intensity) information changes. Based on the monitoring result, it is possible to obtain a prediction result as to whether or not the radio wave condition has deteriorated to such an extent that the download is affected.
The radio wave condition prediction unit 43 supplies the data acquisition control unit 44 with a prediction result of whether or not the radio wave condition has deteriorated.

FIG. 4 is a timing chart showing an example of the transition of the measured value (actually measured value) of the radio wave intensity used when predicting the deterioration of the radio wave condition.
In FIG. 4, the horizontal axis indicates time, and the vertical axis indicates the radio wave status at each time point, that is, the measured value (actual value) of the radio wave intensity at each time point.
In the example of FIG. 4, it can be seen that the measured value (actually measured value) of the radio wave intensity tends to decrease with time.
When the approximate value of the radio wave intensity at the current position of the information processing terminal 1 is the “best” value, the radio wave status prediction unit 43 drops the flag. As described above, when the approximate value of the radio wave intensity is a certain value or more, useless power consumption can be suppressed by prohibiting the prediction of the radio wave condition.
Thereafter, when the approximate value of the radio wave intensity at the current position of the information processing terminal 1 changes from the “best” value to the “good” value, the radio wave condition prediction unit 43 sets a flag to indicate the current radio wave intensity. Monitoring of measured value (actual value), that is, RSSI (received signal strength) information is started.
In this case, the radio wave condition prediction unit 43 initially outputs a prediction result that the radio wave condition does not tend to deteriorate. However, as shown in part A of FIG. 4, when the current measured value (actually measured value) of the radio wave intensity tends to decrease and decreases to a certain level or less, the radio wave condition prediction unit 43 determines that the radio wave condition is Output the prediction result that the trend is worse.

The data acquisition control unit 44 executes control for downloading and acquiring data necessary for the meter reading work based on the prediction result of the deterioration of the radio wave status by the radio wave status prediction unit 43. For example, if the radio wave condition predicting unit 43 predicts that the radio wave condition does not tend to deteriorate, the data acquisition control unit 44 downloads in advance data related to the meter reading operation of each residence where the meter reader will move in the future. Keep it.
Here, the download target data refers to data necessary for meter reading work for each case of electricity, water, or gas, that is, data such as address, name, name, and past meter reading information.
Thereby, for the meter reader, the subsequent meter reading operation will not be hindered.

Note that downloading is a concept that includes not only acquiring data from another device via a wireless communication network but also storing the data in a predetermined recording medium such as the data storage unit 52.
In this case, when the data acquisition control unit 44 records the data acquired from the wireless communication network in the data storage unit 52 or the like, the data acquisition control unit 44 deletes data that satisfies the predetermined condition from the data already recorded in the data storage unit 52 or the like. May be. Here, the predetermined condition is not particularly limited, and various conditions such as past data of the same target and data stored before a certain time can be adopted.

Next, the radio wave monitoring process executed by the information processing terminal 1 having the functional configuration shown in FIG. 2 will be described with reference to FIG.
FIG. 5 is a flowchart for explaining the flow of radio wave monitoring processing executed by the CPU 11 in the information processing terminal 1 of FIG. 1 having the functional configuration of FIG.

  The radio wave monitoring process is started when the meter reader performs a predetermined operation on the input unit 16, and the following process is executed.

In step S <b> 11, the radio field intensity actual value measurement unit 41 acquires the RSSI information from the communication unit 19 as the current radio field intensity actual value (measurement value).
In step S <b> 12, the radio field strength approximate value acquisition unit 42 based on the radio field intensity area information stored in the radio field intensity area information storage unit 51 and the position information acquired by the GPS unit 21. Get the approximate value of the radio field intensity at the location.
In addition, the order of the process of step S11, S12 is not specifically limited, The process of step S11 may be performed after the process of step S12, and the process of step S11, S12 may be performed substantially simultaneously.

  In step S13, the radio wave condition prediction unit 43 obtains the actual measured value (measured value) of the current radio wave intensity acquired in the process of step S11 and the current position of the information processing terminal 1 acquired in the process of step S12. The radio wave condition is predicted based on the approximate value of the radio wave intensity.

In step S <b> 14, the data acquisition control unit 44 determines whether or not the prediction result in step S <b> 13 has a tendency for the radio wave condition to deteriorate.
As described above, in the case of the prediction result that the flag is set and the radio wave condition is deteriorating, it is determined as YES in Step S14, and the process proceeds to Step S15. In step S15, the data acquisition control unit 44 downloads data and advances the process to step S16.
On the other hand, if the flag is not set as described above, or the prediction result indicates that the radio wave condition is not deteriorated even if the flag is set, it is determined as NO in step S14, and the download in step S15 is performed. Is not executed, and the process proceeds to step S16.

In step S <b> 16, the CPU 11 of the information processing terminal 1 determines whether there is an instruction to end the process.
Here, the instruction to end the process is not particularly limited, but in the present embodiment, the information processing terminal 1 is turned off as the instruction to end the process.
Therefore, when the information processing terminal 1 is turned on, it is determined as NO in step S16, the process returns to step S11, and the subsequent processes are repeated.
Thereafter, when the information processing terminal 1 is turned off, it is determined as YES in Step S16, and the radio wave monitoring process is ended.

As described above, the information processing terminal 1 according to the present embodiment is an information processing terminal that acquires data from another device via a wireless communication network, and includes a radio field intensity actual value measurement unit 41 and a radio field intensity approximate value acquisition. Unit 42, radio wave condition prediction unit 43, and data acquisition control unit 44.
The radio field intensity actual value measurement unit 41 acquires a radio field intensity measurement value (actual value) in the information processing terminal 1.
The radio wave intensity approximate value acquisition unit 42 acquires the approximate value of the radio wave intensity at the current position of the information processing terminal 1 based on the measurement result of the GPS unit 21 and the radio wave intensity area information.
The radio wave condition prediction unit 43 predicts the radio wave situation in the information processing terminal 1 based on the measured value (actual value) of the radio wave intensity and the approximate value of the radio wave intensity.
The data acquisition control unit 44 executes control for acquiring data from the wireless communication network based on the prediction result of the radio wave condition prediction unit 43.
This makes it possible to reliably acquire data necessary for business regardless of radio wave conditions in the wireless communication network.

  In addition, this invention is not limited to the above-mentioned embodiment, The deformation | transformation in the range which can achieve the objective of this invention, improvement, etc. are included in this invention.

For example, in the above-described embodiment, the radio wave condition is an actual value (measured value) of radio field intensity based on RSSI (received signal intensity) and an approximate value of radio field intensity based on radio field intensity area information (such as the area map of FIG. 3). Predicted.
However, the information used for prediction of the radio wave condition is not particularly limited to the above-described embodiment, and any number and any kind of information can be combined.
For example, the information processing terminal 1 may predict the radio wave situation using only the actually measured value (measured value) of the radio wave intensity based on the RSSI (received signal intensity), or the radio wave intensity area information (the area map in FIG. 3). The radio wave condition may be predicted using only the approximate value of the radio wave intensity based on the.
However, when only the approximate value of the radio field strength is used, even in the “best” and “good” areas, it is difficult to transmit radio waves, for example, indoors, in the car, underground, in tunnels, in buildings. There are positions such as shades and mountains, and even at the same position, the ease of transmission of radio waves varies depending on the weather and the like at that time, so the accuracy of radio wave condition prediction is rough. For this reason, when it is necessary to ensure the accuracy of the radio wave condition prediction above a certain level, the measured value (measurement value) of the radio wave intensity based on RSSI (received signal intensity) is used as information to be included in the prediction of the radio wave condition. It is preferable to adopt it.
In addition, as information to be included in the prediction of the radio wave situation, information other than the actual value (measured value) of the radio wave intensity and the approximate value of the radio wave intensity adopted in the above-described actual form may be used alone or in combination with some information. It can also be adopted.

For example, in the above-mentioned embodiment, only when the approximate value of the radio wave intensity is changed from “best” to “good” and the flag is set, the radio wave condition tends to deteriorate. Although the download has started, the present invention is not limited to this.
For example, the download may be performed in stages. For example, the information processing terminal 1 determines the prediction result of the radio wave situation in multiple stages, downloads the first data in the first radio wave situation, and downloads the second data in the second radio wave situation. Data may be downloaded.
Here, the relationship between the first data and the second data is not particularly limited, and may be data having the same content, data partially overlapping in content, or not at all. Data with different contents may be used.
For example, as an example of the same content, one of the first data and the second data can be thinned out, or omitted data can be adopted as the other data. . Also, data obtained by compression-encoding one of the first data and the second data can be employed as the other data. Specifically, for example, the first data and the second data, which are images having the same content but different image quality, more specifically, the first data and the second data having different bit rates and resolutions are included. Can be adopted.
Further, as an example in which the contents partially overlap, it is possible to employ the first data of the original moving image and the second data of the thumbnail image.
As an example of completely different content. In meter reading business use, among the residences subject to meter reading, the data related to the residence existing within the first distance from the current position is adopted as the first data, and within the second distance not less than the first distance from the current position. You may employ | adopt the data regarding the existing residence as 2nd data.
In addition, for simplicity of explanation, the description has been given focusing on the relationship between two arbitrary radio wave conditions, but N types of data are adopted in the same manner even if there are N stages (N is an integer value of 3 or more). be able to.

  In the embodiment described above, the approximate value of the radio wave intensity is a three-stage value of “best”, “good”, and “deteriorated”, but is not particularly limited thereto. For example, each of discrete values (digital values) in N stages (N is an integer value of 2 or more) can be adopted as the approximate value of the radio wave intensity, or a continuously changing value (analog value) can be used as the radio wave intensity. It can also be adopted as an approximate value.

In the above-described embodiment, the approximate value of the radio wave intensity is the current position of the information processing terminal 1, but is not particularly limited thereto.
For example, an approximate value of the radio wave intensity at the destination may be adopted. In this case, the information processing terminal 1 stores the movement path of the meter reader in the communication area, and calculates the movement destination from the current position and the movement path.

  Moreover, although the information processing terminal 1 of this embodiment is applied to the use of meter-reading work, it is not restricted to this, It can apply to arbitrary uses other than meter-reading work.

  In the above-described embodiment, the form of the information processing terminal 1 to which the present invention is applied is not particularly limited, and is not limited to a special terminal for meter reading work, but also a smartphone, a portable personal computer, a portable television. Various forms such as a receiver, a video camera, a portable navigation device, a mobile phone, and a portable game machine can be used.

The series of processes described above can be executed by hardware or can be executed by software.
In other words, the functional configuration of FIG. 2 is merely an example and is not particularly limited. That is, it is sufficient that the information processing terminal 1 has a function capable of executing the above-described series of processing as a whole, and what functional block is used to realize this function is not particularly limited to the example of FIG. .
In addition, one functional block may be constituted by hardware alone, software alone, or a combination thereof.

When a series of processing is executed by software, a program constituting the software is installed on a computer or the like from a network or a recording medium.
The computer may be a computer incorporated in dedicated hardware. The computer may be a computer capable of executing various functions by installing various programs, for example, a general-purpose personal computer.

  The recording medium including such a program is not only constituted by the removable medium 31 of FIG. 1 distributed separately from the apparatus main body in order to provide the program to the user, but also in a state of being incorporated in the apparatus main body in advance. The recording medium etc. provided in The removable medium 31 is composed of, for example, a magnetic disk (including a floppy disk), an optical disk, a magneto-optical disk, or the like. The optical disk is composed of, for example, a CD-ROM (Compact Disk-Read Only Memory), a DVD (Digital Versatile Disk), or the like. The magneto-optical disk is configured by an MD (Mini-Disk) or the like. In addition, the recording medium provided to the user in a state of being incorporated in advance in the apparatus main body includes, for example, the ROM 12 in FIG. 1 in which the program is recorded, the hard disk included in the storage unit 18 in FIG.

  In the present specification, the step of describing the program recorded on the recording medium is not limited to the processing performed in time series along the order, but is not necessarily performed in time series, either in parallel or individually. The process to be executed is also included.

  As mentioned above, although several embodiment of this invention was described, these embodiment is only an illustration and does not limit the technical scope of this invention. The present invention can take other various embodiments, and various modifications such as omission and replacement can be made without departing from the gist of the present invention. These embodiments and modifications thereof are included in the scope and gist of the invention described in this specification and the like, and are included in the invention described in the claims and the equivalents thereof.

The invention described in the scope of claims at the beginning of the filing of the present application will be appended.
[Appendix 1]
In an information processing terminal that acquires data from another device via a wireless communication network,
Radio wave intensity measurement value acquisition means for acquiring a radio field intensity measurement value in the information processing terminal;
Radio wave condition prediction means for predicting the radio wave condition in the information processing terminal based on the measurement value of the radio wave intensity measured by the radio wave intensity measurement value acquisition means;
Data acquisition control means for executing control for acquiring data from the wireless communication network based on the prediction result of the radio wave condition prediction means;
An information processing terminal comprising:
[Appendix 2]
Current position measuring means for measuring the current position of the information processing terminal;
Storage means for storing radio field intensity area information indicating an approximate value of a predetermined radio field intensity for each region;
A radio field intensity approximate value acquisition unit that acquires an approximate value of the radio field intensity at the current position based on the measurement result of the current position measurement unit and the radio field intensity area information stored in the storage unit;
Further comprising
The radio wave condition prediction means predicts the radio wave situation based on the approximate value of the radio field intensity acquired by the radio field intensity approximate value acquisition means in addition to the measurement value of the radio field intensity,
The information processing terminal according to Supplementary Note 1, wherein
[Appendix 3]
The radio wave condition prediction means includes
When the approximate value of the radio wave intensity is a certain value or more, prohibiting the prediction of the radio wave condition,
The information processing terminal according to Supplementary Note 2, wherein
[Appendix 4]
The approximate value of the radio wave intensity is preset as a multi-stage discrete value,
The information processing terminal according to Supplementary Note 3, wherein
[Appendix 5]
The measured value of the radio wave intensity in the information processing terminal is a value based on RSSI.
5. The information processing terminal according to any one of supplementary notes 1 to 4, wherein
[Appendix 6]
The data acquisition control unit records data acquired from the wireless communication network on a predetermined recording medium, and erases data satisfying a predetermined condition among the data already recorded on the recording medium at the time of recording. Execute control,
The information processing terminal according to any one of appendices 1 to 5, characterized in that:
[Appendix 7]
In an information processing method executed by an information processing terminal that acquires data from another device via a wireless communication network,
A radio field intensity measurement value acquisition step of acquiring a radio field intensity measurement value in the information processing terminal;
A radio wave condition prediction step for predicting a radio wave condition in the information processing terminal based on the measurement value of the radio wave intensity measured by the process of the radio wave intensity measurement value acquisition step;
A data acquisition control step for executing control for acquiring data from the wireless communication network based on a processing result of the radio wave condition prediction step.
[Appendix 8]
To a computer that controls an information processing terminal that acquires data from another device via a wireless communication network,
A radio field intensity measurement value acquisition function for acquiring a radio field intensity measurement value in the information processing terminal;
A radio wave condition prediction function for predicting a radio wave condition in the information processing terminal based on the measurement value of the radio wave intensity measured by the demonstration of the radio wave intensity measurement value acquisition function;
A data acquisition control function for executing control for acquiring data from the wireless communication network based on the result of the radio wave condition prediction function;
A program that executes control processing including

  DESCRIPTION OF SYMBOLS 1 ... Information processing terminal, 11 ... CPU, 12 ... ROM, 13 ... RAM, 14 ... Bus, 15 ... Input / output interface, 16 ... Input part, 17 ... Output unit, 18 storage unit, 19 communication unit, 20 antenna, 21 GPS unit, 22 drive, 31 removable media, 41 radio wave intensity Measured value measurement unit, 42 ... Radio wave intensity approximate value acquisition unit, 43 ... Radio wave condition prediction unit, 44 ... Data acquisition control unit, 51 ... Radio wave intensity area information storage unit, 52 ... Data Memory

Claims (2)

An information processing terminal having a wireless communication function,
A measuring means for measuring the current radio field intensity;
An acquisition means for acquiring the approximate information of the radio field intensity at the current position by referring to the storage means in which the approximate information of the radio field intensity at a plurality of locations is stored in advance ;
When the rough information of the radio field intensity at the current position acquired by the acquisition unit is an intensity level set that the radio field intensity may be deteriorated, the measurement unit starts measuring the radio field intensity at the current position. Control means for starting monitoring of the radio field intensity obtained by the measurement;
With
The control means starts receiving predetermined data at a timing earlier than when the radio field strength is good, when the deterioration tendency of the radio field intensity is detected by the monitoring.
An information processing terminal characterized by that . A computer of an information processing terminal provided with radio wave intensity measuring means and wireless communication means,
An acquisition means for acquiring the approximate information of the radio field intensity at the current position by referring to the storage means in which the approximate information of the radio field intensity at a plurality of locations is stored in advance.
When the rough information of the radio field intensity at the current position acquired by the acquisition unit is an intensity level set that the radio field intensity may be deteriorated, the measurement unit starts measuring the radio field intensity at the current position. Control means for starting monitoring of the radio field intensity obtained by the measurement,
Function as
The control means causes the wireless communication means to start receiving predetermined data at an earlier timing than when the radio field intensity is good when the deterioration tendency of the radio field intensity is detected by the monitoring.
A program characterized by that.

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