WO2010021037A1

WO2010021037A1 - Route determination support device and route determination support method

Info

Publication number: WO2010021037A1
Application number: PCT/JP2008/064836
Authority: WO
Inventors: 正夫神田
Original assignee: パイオニア株式会社
Priority date: 2008-08-20
Filing date: 2008-08-20
Publication date: 2010-02-25
Also published as: CN102124504A; JPWO2010021037A1

Abstract

Whenever a support server (720) receives the actual measurement information from any of a plurality of moving vehicles (MV_k) (k=0,…), a generating means (723) updates communication environment information including communication state information associated with date and time information on each of a plurality of areas on the basis of the actual measurement information to store it in a storage means (721). When a destination is specified in a mobile terminal (710), a control means (711A) transmits a request to acquire the communication environment information to the support server (720). In response to the acquisition request, a report means (724) returns the communication environment information corresponding to the acquisition request to the control means (711A). The control means (711A) having received the return of the communication environment information instructs an information presenting means (712) to present information on the communication environment from the current position of a car (CR₀) to the destination. This makes it possible to support the determination of a moving route to ensure the reception rate of communication data in a communication device moving together with a moving vehicle.

Description

Route determination support device and route determination support method

The present invention relates to a route determination support device, a route determination support method, a route determination support program, and a recording medium on which the route determination support program is recorded.

Conventionally, various devices are mounted on a moving body such as a vehicle. Such mobile devices include navigation devices that guide and guide when moving a mobile device, broadcast receivers that receive broadcast waves and reproduce broadcast content, and communication content downloaded or streamed from a content server by wireless communication. A content playback device that plays In addition, with the progress of digital technology in recent years, devices in which the functions of these devices are combined have appeared.

The above-described broadcast receiving apparatus and content reproduction apparatus using communication receive radio waves in a corresponding frequency band and extract content data carried by the radio waves. For this reason, good content reproduction cannot be performed in an area where the reception state of the radio wave (the influence of reception power, multipath, etc.) is poor.

Therefore, a technique has been proposed that takes into account the reception power (reception strength) of the broadcast wave in the moving route when performing guidance and guidance during the movement of the moving body (see Patent Document 1: hereinafter, “conventional example”). Called). In this conventional technique, position information and reception state information are associated with each other, and route display and route search are performed using the associated information.

JP 2001-156659 A

The above-described prior art technique is suitable when it can be said that there is almost no change in the reception rate of the content data, such as reception of broadcast waves. However, when the content reproduction apparatus acquires content data by communication, generally, a so-called best effort method is adopted. Therefore, even at the same position, for example, communication with a base station having jurisdiction over the position is possible. When the number of communication devices that perform the change changes, the content data reception rate by the content reproduction device changes.

Therefore, when acquiring content data from a content server by communication, considering only the received power of the radio signal from the base station at each position of the moving route as in the prior art, the content data A case where the reception rate cannot be ensured may occur. As a result, even if the reception power of the radio signal from the base station is sufficient, for example, the reception rate of content data for stream reproduction cannot be secured, and content stream reproduction may be interrupted.

For this reason, when acquiring content data for stream playback using communication by a content playback device that moves with a mobile body, a technique that can ensure a reception rate and contribute to stream playback of content that does not give the user a sense of incongruity. Long-awaited. Meeting this requirement is one of the problems to be solved by the present invention.

The present invention has been made in view of the above circumstances, and a new route determination support apparatus and route determination support method for supporting determination of a travel route that can secure a reception rate of communication data in a communication device that moves together with a mobile object. The purpose is to provide.

From a first aspect, the present invention is a route determination support device that supports determination of a moving route of a mobile body, and includes a communication environment including communication state information associated with date and time information for each of a plurality of areas. Storage means for storing information; information presentation means for presenting information to a user; current position and destination of the mobile body based on the current position and current date and time of the mobile body and the communication environment information And a control unit that causes the information presenting unit to present information related to the communication environment in each of the regions between the first and second regions.

From a second aspect, the present invention is a route determination support method for supporting determination of a moving route of a mobile body, and includes a communication environment including communication state information associated with date and time information for each of a plurality of areas A communication environment acquisition step for acquiring information; a specification step for specifying a current position and a current date and time of the mobile body; and a current position of the mobile body based on a specification result in the specification step and an acquisition result in the communication environment acquisition step And a presentation step of presenting a communication environment in each of the areas between the destination and the destination.

From the third aspect, the present invention is a route determination support program characterized by causing a calculation means to execute the route determination support method of the present invention.

From the fourth aspect, the present invention is a recording medium in which the route determination support program of the present invention is recorded so as to be readable by a calculation means.

It is a block diagram for demonstrating the structure of the route determination assistance apparatus which concerns on 1st Embodiment of this invention. It is a block diagram for demonstrating the structure of the route determination assistance apparatus which concerns on 2nd Embodiment of this invention. It is a block diagram for demonstrating the structure of the route determination assistance apparatus which concerns on 1st Example of this invention, and the apparatus connected with the said route decision assistance apparatus. It is a block diagram for demonstrating the structure of the navigation apparatus of FIG. It is a block diagram for demonstrating the structure of the assistance server of FIG. It is a figure for demonstrating the example of the division of the area | region assumed in 1st Example. It is a figure for demonstrating the structure of the communication environment information (CCI) of FIG. It is a figure for demonstrating the structure of the separate communication environment information of FIG. It is a figure for demonstrating the structure of the reception power information of FIG. It is a figure for demonstrating the structure of the reception rate information of FIG. It is a sequence diagram for demonstrating the production | generation process of the communication environment information in 1st Example. 12 is a flowchart for explaining actual information acquisition processing in FIG. 11. 12 is a flowchart for explaining communication environment information generation processing based on actually measured information in FIG. It is a sequence diagram for demonstrating the presentation process of the communication environment information in 1st Example. It is a figure which shows the example of presentation of communication environment information. It is a block diagram for demonstrating the apparatus connected with the navigation apparatus which is a route determination assistance apparatus which concerns on 2nd Example of this invention. It is a block diagram for demonstrating the structure of the navigation apparatus of FIG. It is a flowchart for demonstrating the production | generation process of the communication environment information in 2nd Example.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following description and drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

[First Embodiment]
First, a first embodiment of the present invention will be described with reference to FIG.

<Configuration>
FIG. 1 shows a schematic configuration of a route determination support apparatus 700A according to the first embodiment and various apparatuses that exchange data with the route determination support apparatus 700A.

As illustrated in FIG. 1, the route determination support device 700 A includes a mobile terminal device 710 and a support server 720. Here, the mobile terminal device 710 is mounted on a moving body MV _0, and moves together with the moving body MV _0. The support server 720 is disposed at a fixed position. The mobile terminal device 710 and the support server 720 can perform data communication via the network system NWS.

The mobile terminal device 710 includes a control unit 711A and an information presentation unit 712. Here, it is assumed that the mobile MV ₀ is also equipped with a content playback processing device that plays back content acquired by data communication from the content server via the network system NWS. Note that the mobile terminal device 710 can also be configured to have the function of the content reproduction processing device.

When the destination is designated by the user, the control unit 711A performs communication in a plurality of areas that may pass in the movement from the current position of the mobile MV ₀ held by the support server 720 to the destination. Obtain environmental information. This “communication environment information” includes information on the communication state associated with the date and time information for each of the plurality of areas. Here, the “plurality of areas” is determined in advance on the map by a predetermined method. The “communication state” includes, for example, the power of a received signal in wireless communication with the network system NWS, the reception rate of content data from the content server, and the like. The “date and time information” includes, for example, changes due to the season, changes due to the day of the week, changes due to time zones, and the like.

When acquiring the communication environment information, the control unit 711A sends a communication environment information acquisition request to the support server 720 via the network system NWS. In the acquisition request, the control unit 711A actually uses the communication environment information returned from the support server 720 by designating the current position and the destination of the mobile MV _{0 in} the presentation process described later. It can be limited to.

In addition, when the control unit 711A acquires the communication environment information returned from the support server 720 as a response to the acquisition request for the communication environment information, the control unit 711A displays the current position and current date and time of the mobile MV ₀ and the acquired communication environment information. Based on this, presentation control for the user of the communication environment in each of the areas between the current position of the mobile unit MV ₀ and the destination is performed. In such presentation control, the control unit 711A calculates the scheduled passage date and time of each area. And control means 711A specifies the communication environment which should be shown about each field based on the calculation result.

The information presentation unit 712 is configured to include an image display unit, for example. Note that the information presenting means may include an image display means and an audio output means.

The information presenting unit 712 presents the communication environment in each of the areas between the current position of the moving object MV ₀ and the destination to the user under the control of the control unit 711A. When the communication environment is presented by the image display means, the communication environment of each area may be displayed on a map. In this case, the communication environment may be ranked from the viewpoint of quality, and for example, colors corresponding to the corresponding rank may be attached to each area on the map.

The support server 720 includes a storage unit 721, a collection unit 722, and a generation unit 723. The support server 720 further includes a reporting unit 724.

The storage means 721 stores the communication environment information having the above-described contents. The storage unit 721 stores not only communication environment information but also various information.

The above collecting means 722 collects actual measurement information of communication states from a plurality of mobile objects via the network system NWS. Here, “actual measurement information” includes the measurement result of the communication state, the measurement date and time, and the measurement position. The collection result by the collection unit 722 is sent to the generation unit 723.

It should be noted that the “plural mobile bodies” reporting the actual measurement information may not include the mobile body MV ₀ but may include only other mobile bodies MV ₁ ,... Or may include the mobile body MV ₀ . When the mobile body MV ₀ is included in the “plural mobile bodies”, the mobile terminal device 710 includes a measurement unit that measures the communication state; and the measurement date and time and the measurement position are added to the measurement result by the measurement unit Transmission means for sending the information thus obtained to the support server 720 as actual measurement information.

The above-described generating unit 723 generates new communication environment information based on the actual measurement information that is the collection result by the collecting unit 722. When generating the new communication environment information, the generation unit 723 reads a registered value of the communication state corresponding to the actual measurement information from the communication environment information stored in the storage unit 721. Then, based on the read registration value of the communication state and the communication state value in the actual measurement information, the generation unit 723 calculates a new communication state in the combination of the area corresponding to the actual measurement information and the date and time. . And the production | generation means 723 produces | generates new communication environment information by updating the communication state in the combination of the area | region corresponding to the said measurement information in the memory | storage means 721, and a date and time.

The reporting means 724 receives a communication environment information acquisition request from the mobile terminal device 710 via the network system NWS. Upon receiving this acquisition request, the reporting unit 724 reads the communication environment information corresponding to the acquisition request from the storage unit 721. Then, the reporting unit 724 returns the reading result to the mobile terminal device 710 via the network system NWS.

<Operation>
Next, a route determination support method executed in the route determination support device 700A configured as described above will be described.

<< Communication environment information generation process >>
First, communication environment information generation processing by the route determination support device 700A will be described. It is assumed that the mobile unit MV _{0 is} also configured to send actual measurement information to the support server 720.

In the support server 720 that has received the actual measurement information from any of the plurality of mobile units MV _k (k = 0, 1,...) Via the network system NWS, the collection unit 722 collects the actual measurement information and generates it. Send to means 723. Receiving the actual measurement information, the generation unit 723 reads the registered value of the communication state in the combination of the area corresponding to the actual measurement information and the date / time from the communication environment information stored in the storage unit 721.

Based on the communication state registration value read in this way and the communication state value in the actual measurement information, the generation unit 723 calculates a new communication state related to the combination of the area corresponding to the actual measurement information and the date and time. Here, for example, when the read registration value of the communication state is not generated based on the previous actual measurement information (when estimated as described later), the generation unit 723 performs the actual measurement. The value of the communication state in the information can be adopted as it is to make a new communication state. Further, when the read registration value of the communication state is generated based on the previous measurement information, for example, a new communication state is calculated using a statistical method. Can do.

Note that the generation unit 723 determines, for the combination of the area where the communication state based on the actual measurement information is not obtained and the date and time, the area where the communication state based on the actual measurement information is obtained and the date and time around the position or time. The communication state can be estimated by estimating the communication state based on the registered value of the communication state. That is, with respect to the actual measurement area for which actual measurement information is obtained for any date and time, for each unmeasured date and time that is the date and time when actual measurement information is not reported, the date and time when the actual measurement information is reported in the actual measurement area The communication state can be estimated in consideration of the registered value of the communication state. In addition, regarding an unmeasured area for which actual measurement information is not obtained for any date and time, the communication state may be estimated in consideration of the registered value of the area where the communication state based on the actual measurement information is obtained. it can.

It should be noted that the position of the base station can be further taken into account when estimating the registered value. In addition, regarding the unmeasured area, it is possible to estimate the communication state in consideration of only the position of the base station.

The generation unit 723 updates the communication state in the combination of the area corresponding to the actual measurement information and the date and time in the storage unit 721 to the new communication state calculated as described above. As a result, new communication environment information is generated.

Thereafter, whenever new measurement information is received from any of the plurality of mobile bodies MV _k (k = 0, 1,...), New communication environment information is generated in the support server 720 in the same manner as described above. The

《Communication environment presentation processing》
Next, communication environment presentation processing by the route determination support device 700A will be described.

When the destination designated by the user is notified to the control unit 711A of the mobile terminal device 710, the control unit 711A first sends a communication environment information acquisition request to the support server 720 via the network system NWS. . As described above, the control unit 711A may specify the current position and the destination of the moving object MV ₀ in the acquisition request.

In the support server 720, the reporting unit 724 receives the acquisition request. The reporting unit 724 that has received the acquisition request reads the communication environment information corresponding to the acquisition request from the storage unit 721. Then, the report unit 724 returns the read result to the mobile terminal device 710 (control unit 711A) via the network system NWS.

The control unit 711A that received the return of the communication environment information acquires the communication environment information sent back from the support server 720 as a response to the acquisition request of the communication environment information, current position and the current date and time of the moving body MV _0, and Based on the acquired communication environment information, the communication environment in each of the areas between the current position of the mobile MV ₀ and the destination is presented to the user using the information presenting means 712. Here, the control means 711A calculates the scheduled passage date and time for each area. Then, based on the calculation result, the control unit 711A specifies the communication environment to be presented for each area from the acquisition results of the communication environment information.

As described above, according to the first embodiment of the present invention, it is possible to support determination of a travel route that contributes to securing a communication data reception rate in a communication device that moves together with a mobile object.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIG.

<Configuration>
FIG. 2 shows a schematic configuration of a route determination support apparatus 700B according to the second embodiment. As shown in FIG. 2, the route determination support device 700B differs from the route determination support device 700A of the first embodiment in that all the components move together with the moving body MV.

The route determination support device 700B includes a storage unit 731, a measurement unit 732, and a generation unit 733. The route determination support device 700B includes a control unit 711B and an information presentation unit 712.

The storage means 731 stores communication environment information in the same manner as the storage means 721 described above. The storage unit 731 stores not only the communication environment information but also navigation information such as map data, POI (Point Of Interest) data, background data, and the like.

The above-mentioned measuring means 732 measures the communication state having the above-described contents. Then, the measurement unit 732 adds the measurement date and time and the measurement position to the measurement result of the communication state, and sends the result to the generation unit 733 as actual measurement information.

The generation unit 733 receives the actual measurement information from the measurement unit 732. Then, the generation unit 733 generates new communication environment information based on the actual measurement information and the communication environment information stored in the storage unit 731 in the same manner as the generation unit 723 described above.

Similar to the above-described control unit 711A, the control unit 711B acquires the communication environment information, based on the current position and current date and time of the mobile unit MV and the acquired communication environment information. Controls the presentation to the user of the communication environment in each of the areas between the destinations. The control unit 711B is different from the control unit 711A in that the communication environment information is directly acquired from the storage unit 731.

<Operation>
Next, a route determination support method executed in the route determination support device 700B configured as described above will be described.

<< Communication environment information generation process >>
First, communication environment information generation processing by the route determination support device 700B will be described.

When the measurement unit 732 measures the communication state, the measurement date and time and the measurement position are added to the measurement result of the communication state, and is sent to the generation unit 733 as actual measurement information. The generation unit 733 that has received the actual measurement information reads the communication state registration value in the combination of the area corresponding to the actual measurement information and the date and time from the communication environment information stored in the storage unit 731.

Based on the communication state registration value read in this way and the communication state value in the actual measurement information, the generation unit 733 calculates a new communication state related to the combination of the region corresponding to the actual measurement information and the date and time. Then, the generation unit 733 updates the communication state in the combination of the area corresponding to the actual measurement information and the date and time in the storage unit 731 to the new communication state calculated as described above. As a result, new communication environment information is generated.

Thereafter, each time the communication state is measured by the measuring means 732, new communication environment information is generated in the same manner as described above.

《Communication environment presentation processing》
Next, communication environment presentation processing by the route determination support device 700B will be described.

When the destination designated by the user is notified to the control means 711B, the control means 711B is stored in the storage means 731 based on the designated destination, the current position of the moving object MV, and the current date and time. By appropriately referring to the communication environment information and the navigation information, the communication environment in each of the areas between the current position of the mobile MV and the destination is presented to the user using the information presenting means 712. . Here, the control means 711B calculates the scheduled passage date and time of each area in the same manner as the control means 711A described above. And the control means 711B specifies the communication environment which should be shown about each area | region from the acquisition result of communication environment information based on the said calculation result.

As described above, according to the second embodiment of the present invention, as in the case of the first embodiment described above, the travel route that contributes to securing the reception rate of the communication data in the communication device that moves with the mobile body. Can help make decisions.

In addition, as a moving body in said 1st and 2nd embodiment, a vehicle, a person, etc. can be mentioned, for example. And as a mobile terminal device, when a mobile body is a vehicle, a car navigation apparatus etc. can be mentioned, and when a mobile body is a person, a mobile telephone apparatus etc. can be mentioned.

Further, the route

determination support devices

700A and 700B of the first and second embodiments are configured to include one or more computers as calculation means, and the functions of the respective means except the storage means described above are executed as programs. By doing so, it can be realized. These programs may be acquired in the form recorded on a portable recording medium such as a CD-ROM or DVD, or may be acquired in the form of delivery via a network such as the Internet. Can do.

Hereinafter, embodiments of the route determination support apparatus of the present invention will be described with reference to FIGS. In the following description and drawings, the same or equivalent elements are denoted by the same reference numerals, and redundant description is omitted.

[First embodiment]
First, a first embodiment of the present invention will be described with reference mainly to FIGS.

FIG. 3 shows a schematic configuration of the route determination support device 100 according to the first embodiment of the present invention, and various devices that perform data communication with the route determination support device 100. The route determination support device 100 is an aspect of the route determination support device 700A of the first embodiment described above.

<Configuration>
As illustrated in FIG. 3, the route determination support device 100 includes a navigation device 200 A as a mobile terminal device 710 and a support server 400 as a support server 720. Here, the navigation device 200A is mounted on the vehicle CR ₀ as the moving body MV ₀ and moves together with the vehicle CR ₀ . Moreover, the support server 400 is arrange | positioned at the fixed position in a predetermined building, for example.

A travel sensor unit 290 mounted on the vehicle CR ₀ is connected to the navigation device 200A. The navigation device 200 A performs data communication with the support server 400 and the content server 600 via the network 510 by performing wireless communication with a base station (BS) 520 in the network system 500. The contents of data exchanged between the navigation device 200A with the travel sensor unit 290, the support server 400, and the content server 600 will be described later.

The network system 500 includes a large number of base stations, but only one base station 520 is typically shown in FIG.

The support server 400 can communicate with the vehicle CR _k (k = 0, 1,...) Via the network system 500. The contents of communication data between the support server 400 and the vehicle CR _k will be described later.

Content data is registered in the content server 600 described above. When the content server 600 receives a request for content data via the network system 500, the content server 600 sends the content data via the network system 500 to the device that has made the request.

<< Configuration of Navigation Device 200A >>
The navigation device 200A has a current position and current date and time detection function, a communication state measurement function, a communication environment presentation control function, a guidance guidance function, and a content reproduction function. As shown in FIG. 4, the navigation device 200A having these functions includes a control unit 210A, a storage device 220A, and a wireless communication unit 240. The navigation device 200 A includes a sound output unit 250, a display unit 260 as the information presentation unit 712 described above, and an operation input unit 270. Furthermore, the navigation device 200A includes a sensor interface 280 and a GPS (Global Positioning System) receiving unit 285.

The control unit 210A controls the entire navigation device 200A. The control unit 210A will be described later.

The storage device 220A is composed of a hard disk device or the like that is a nonvolatile storage device. The storage device 220A stores various data such as navigation information (NVI). The storage unit 220A can be accessed by the control unit 210A.

The above navigation information includes various data used for navigation such as map data, POI data, and background data. These data are read by the control unit 210A.

The wireless communication unit 240 is configured with an antenna (not shown) and the like. The wireless communication unit 240 processes a received signal from the network system 500 (more specifically, the base station 520) received by the antenna and converts it into a digital data signal that can be processed by the control unit 210A. Also, the wireless communication unit 240 processes the transmission signal from the control unit 210A and sends it to the network system 500 (more specifically, the base station 520) in the form of a wireless signal via the antenna.

By using the wireless communication unit 240, the navigation device 200A (more specifically, the control unit 210A) can communicate with the support server 400 and the content server 600.

Further, the wireless communication unit 240 detects the reception power of the radio signal in the frequency band used for communication with the network system 500. This detection result is sent to the control unit 210A as received power data.

The sound output unit 250 includes a speaker, and outputs sound corresponding to the sound data received from the control unit 210A. This sound output unit 250 outputs guidance voices such as the traveling direction of the vehicle CR ₀ , the traveling situation, and the traffic situation under the control of the control unit 210A. In addition, the sound output unit 250 outputs content playback audio under the control of the control unit 210A.

The display unit 260 includes a display device such as a liquid crystal panel, and displays an image corresponding to the display data received from the control unit 210A. The display unit 260 displays map information, guidance information, and the like during navigation processing. Further, the display unit 260 displays a content reproduction image.

The above-described operation input unit 270 includes a key unit provided in the main body of the navigation device 200A and / or a remote input device including the key unit. Here, as a key part provided in the main body part, a touch panel provided in a display device of the display unit 260 can be used. In addition, it can replace with the structure which has a key part, or can also employ | adopt the structure input with a sound using a voice recognition technique in combination.

When the user operates this operation input unit 270, the operation content of the navigation device 200A is set and an operation command is performed. For example, the user uses the operation input unit 270 to set a destination or the like, or to obtain a content acquisition command. Such input contents are sent as operation input data from the operation input unit 270 to the control unit 210A.

Additional sensor interface 280 includes a navigation device 200A, is used for data transfer between the travel sensor unit 290 mounted on the vehicle CR _0. Here, the travel sensor unit 290 includes, as an example in the first embodiment, (i) a vehicle speed sensor that detects the moving speed of the vehicle, (ii) an acceleration sensor that detects acceleration acting on the vehicle, and iii) an angular velocity sensor for detecting the angular velocity of the vehicle. The detection results by these sensors are sent to the sensor interface 280 as detection signals. Upon receiving this detection signal, the sensor interface 280 sends the detection result by the travel sensor unit 290 to the control unit 210A as travel sensor data.

The GPS receiving unit 285 calculates the current position of the vehicle CR ₀ based on reception results of radio waves from a plurality of GPS satellites. The GPS receiving unit 285 measures the current date and time based on the date and time information transmitted from the GPS satellite. Information on the current position and the current date and time is sent to the control unit 210A as GPS data.

Next, the control unit 210A will be described. The control unit 210A includes a central processing unit (CPU) and its peripheral circuits. The various functions described above are realized by the control unit 210A executing various programs. Among these functions, the functions as the control unit 711A, the measurement unit, and the transmission unit in the first embodiment described above are also included.

Here, the control unit 210A is a so-called map based on the travel sensor data reported from the sensor interface 280, the GPS data reported from the GPS receiving unit 285, and the map data in the navigation information stored in the storage device 220A. The current position of the vehicle CR ₀ is detected using a matching method. Further, the control unit 210A detects the current date and time based on the time measurement result in the GPS data and the time measurement result of the internal timer.

In addition, the control unit 210A periodically collects received power data from the wireless communication unit 240. Furthermore, when the control unit 210A is communicating with the content server 600 in the received power data, the control unit 210A measures the reception rate of the received data from the content server 600. Then, the control unit 210A sends the measurement result to the wireless communication unit 240 as the actual measurement information of the communication state together with the measurement position and the measurement date. As a result, the actual measurement information is sent to the support server 400 via the network system 500.

In the first embodiment, the data rate per unit time in a series of content data reception operations corresponding to one content is measured as the reception rate.

Also, the control unit 210A controls the presentation of the communication environment when the destination is designated by the user. Here, the destination designation by the user is notified to the control unit 210A as operation input data from the operation input unit 270.

The control unit 210A receives the notification destinations designated, a request to acquire communication environment information specifying the current position of the destination and the vehicle CR _0, and sends to the wireless communication unit 240. As a result, the acquisition request is sent to the support server 400 via the network system 500.

Further, the control unit 210A receives the communication environment information transmitted from the support server 400 via the network system 500 and the wireless communication unit 240 as a response to the acquisition request. Upon receiving this communication environment information, the control unit 210A, based on the current position and current date and time of the vehicle CR ₀ and the acquired communication environment information, in each of the areas between the current position of the vehicle CR ₀ and the destination. The communication environment is displayed on the display unit 260.

Here, if the control unit 210A passes through each region in consideration of the speed information obtained through the sensor interface 280 based on the positional relationship between the current position of the vehicle CR ₀ and each region, Calculate the date and time estimated to pass (scheduled date and time of passage). And control unit 210A specifies the communication environment which should be shown about each area | region from the acquisition result of communication environment information based on the said calculation result.

In the first embodiment, the communication environments are ranked from the viewpoint of quality, and the colors corresponding to the corresponding ranks are assigned to the respective areas on the map displayed on the display unit 260.

Further, when the control unit 210A receives a content reproduction command including content specific information as operation input data from the operation input unit 270, the control unit 210A sends a content data request specifying the content specific information to the wireless communication unit 240. As a result, the content data request is sent to the content server 600 via the network system 500.

Further, the control unit 210A receives the content data transmitted from the content server 600 through the network system 500 and the wireless communication unit 240 as a response to the content data request. Then, the control unit 210A processes the received content data, generates audio data and display data corresponding to the content data, and sends them to the sound output unit 250 and the display unit 260.

<< Configuration of Support Server 400 >>
Returning to FIG. 3, the support server 400 has a function of generating and reporting communication environment information. As illustrated in FIG. 5, the support server 400 includes a storage device 410 as a storage unit 721 and a transmission / reception unit 420. Further, the support server 400 includes a processing control unit 440.

The storage device 410 is composed of a hard disk device or the like that is a nonvolatile storage device. The storage device 410 stores various data such as communication environment information (CCI). The storage control unit 440 can access the storage device 410.

As the communication environment information, for example, individual areas R (m, n) (m = 1, 2,...; N = 1, 2,...) Virtually divided as shown in FIG. Communication environment information RCI (m, n) is registered (see FIG. 7). Here, as shown in FIG. 8, the individual communication environment information RCI (m, n) includes the position information BSP (m, n), the reception power information RPI (m, n), and the reception rate information RRI of the jurisdiction base station. (M, n) is included.

The above received power information RPI (m, n) includes the presence / absence of actual measurement information report and the received power value, as shown in FIG. Here, it is possible to determine whether or not the received power value is based on the actual measurement information based on the presence or absence of the actual measurement information report.

The reception rate information RRI (m, n) described above includes reception rate information for each day of the week, as shown in FIG. The reception rate information for each day of the week includes reception rate information for each predetermined time zone. The reception rate information for each time zone includes the reception rate value and the presence / absence of the actual measurement information report. Here, it is possible to determine whether or not the reception rate value is based on the actual measurement information based on the presence or absence of the actual measurement information report.

Note that the communication state information in the region R (m, n) is configured from the reception power information RPI (m, n) and the reception rate information RRI (m, n).

Returning to FIG. 5, the transmission / reception unit 420 performs communication control with the network system 500. The transmission / reception unit 420 sends the data received from the network system 500 to the processing control unit 440. In addition, the transmission / reception unit 420 sends the data received from the processing control unit 440 to the network system 500. By using the transmission / reception unit 420, the support server 400 can communicate with devices mounted on the vehicle CR _k (k = 0, 1,...).

The processing control unit 440 performs overall control of the entire support server 400. The processing control unit 440 includes a central processing unit (CPU) and its peripheral circuits. The various functions described above are realized by the processing control unit 440 executing various programs. These functions include functions as the collecting unit 722, the generating unit 723, and the reporting unit 724 in the first embodiment described above.

Here, when the process control unit 440 receives actual measurement information from the vehicle CR _k (k = 0, 1,...) Via the network system 500 and the transmission / reception unit 420, the process control unit 440 collects the actual measurement information. Subsequently, the processing control unit 440 generates new communication environment information as described later based on the collected actual measurement information and the communication environment information in the storage device 410 and registers the new communication environment information in the storage device 410.

Further, when the processing control unit 440 receives the communication environment information acquisition request from the navigation device 200A via the network system 500 and the transmission / reception unit 420, the processing control unit 440 reads the communication environment information corresponding to the acquisition request from the storage device 410. Then, the process control unit 440 sends the reading result to the navigation device 200 A via the transmission / reception unit 420 and the network system 500.

In addition, the vehicle CR _j (j = 1,...) Other than the vehicle CR ₀ is also equipped with an in-vehicle device having the functions of the measurement unit and the transmission unit described above, similarly to the navigation device 200A. And the said vehicle-mounted apparatus measures a communication state, and transmits to the support server 400 as actual measurement information to which the measurement position and the measurement date were added.

<Operation>
Next, the operation of the route determination support device 100 configured as described above will be described mainly focusing on the support processing at the time of route determination.

<< Generation of communication environment information >>
First, communication environment information (CCI) generation processing in the storage device 410 of the support server 400 will be described.

At the time of generation processing of such communication environment information, as shown in FIG. 11, in step S11, the vehicle CR respective vehicle apparatus _k (in the case of a vehicle CR ₀ is a navigation device 200A) acquisition processing of the measured information by the Done. Hereinafter, this acquisition process will be described with reference to the acquisition process in the navigation device 200A.

In this step S11, as shown in FIG. 12, first, in step S21, the control unit 210A of the navigation device 200A measures the communication state at the time when the periodic communication state measurement timing comes. At the time of this measurement, the control unit 210A acquires the reception power of the reception signal from the base station 520 from the wireless communication unit 240. If the content data from the content server 600 is received at this time, the control unit 210A measures the reception rate of the content data.

Subsequently, in step S22, the control unit 210A is based on the travel sensor data reported from the sensor interface 280, the GPS data reported from the GPS receiving unit 285, and the map data in the navigation information stored in the storage device 220A. The current position of the vehicle CR ₀ obtained by using a so-called map matching method is specified as the measurement position. In addition, the control unit 210A specifies the current date and time as the measurement date and time based on the time measurement result in the GPS data and the time measurement result of the internal timer.

Next, in step S23, the control unit 210A generates actual measurement information in which the measurement position and the measurement date / time are added to the measured communication state. In step S24, the control unit 210A sends the actual measurement information to the wireless communication unit 240. As a result, as shown in FIG. 11, actual measurement information (MDT) is sent to the support server 400 via the network system 500.

Note that in the in-vehicle devices of other vehicles CR _j (j = 1,...), The same processing as in steps S21 to S24 is performed, and the actual measurement information (MDT) is transmitted to the support server via the network system 500. 400.

Upon receiving this actual measurement information (MDT), the support server 400 performs communication environment information generation processing in step S12. In step S12, as shown in FIG. 13, first, in step S31, when actual measurement information from any of the vehicles CR _k (k = 0, 1,...) Is received via the transmission / reception unit 420, processing control is performed. The unit 440 collects the actual measurement information.

Next, in step S32, the process control unit 440 reads from the storage device 410 a registered value of the communication state to be updated. In the reading process, the process control unit 440 first specifies the measurement position and the measurement date and time in the collected actual measurement information. Subsequently, the processing control unit 440 reads from the storage device 410 the registered value of the communication state in the area, day of the week, and time zone corresponding to the specified measurement position and measurement date and time.

Next, in step S33, the process control unit 440 calculates new communication state information based on the reading result in step S32 and the value of the communication state. In the calculation process, the process control unit 440 performs a first determination as to whether or not the registered value of the received power in the read communication state is based on the actual measurement information. If the result of the first determination is negative, the processing control unit 440 changes the received power value in the actual measurement information to a new reception power value in the area, day of the week, and time zone corresponding to the actual measurement information. decide.

On the other hand, when the result of the first determination is affirmative, the process control unit 440 determines a predetermined value related to the received power with respect to the received power value in the actual measurement information and the registered value of the received power in the read communication state. Is added to calculate a new received power value in the region, day of the week, and time zone corresponding to the actual measurement information.

The weight used in the predetermined weighted addition related to the received power is determined in advance by experiment, simulation, experience, or the like.

Next, the process control unit 440 performs a second determination as to whether or not the actual measurement information includes a reception rate value. If the result of the second determination is negative, the process proceeds to step S34.

If the result of the second determination is affirmative, the process control unit 440 determines whether the registered value of the reception rate in the read communication state is based on actually measured information. I do. If the result of the third determination is negative, the processing control unit 440 changes the reception rate value in the actual measurement information to a new reception rate value in the area, day of the week, and time zone corresponding to the actual measurement information. decide.

On the other hand, when the result of the third determination is affirmative, the processing control unit 440 determines a predetermined value related to the reception rate for the reception rate value in the actual measurement information and the registered value of the reception rate in the read communication state. Is added to calculate a new reception rate value in the region, day of the week, and time zone corresponding to the actual measurement information. Then, the process proceeds to step S34.

Note that the weight used in the predetermined weighted addition related to the reception rate is determined in advance by experiment, simulation, experience, or the like.

In step S34, the process control unit 440 updates the reception state information in the combination of the area corresponding to the actual measurement information and the date and time in the storage device 410 with the new reception state information obtained as described above.

Subsequently, in the storage device 410, the processing control unit 440 is not based on the actual measurement information as the positional and temporal peripheral communication state information for the combination of the area and the date / time in which the reception state information is updated A fourth determination is made as to whether there is something. If the result of the fourth determination is negative, the new communication environment information generation process in step S12 ends.

On the other hand, when the result of the fourth determination is affirmative, the processing control unit 440 determines the combination of the area and the date and time where the communication state based on the actual measurement information is obtained in the positional or temporal surroundings. Is estimated based on the registered value of the communication state (that is, including the above update result). That is, with respect to the actual measurement area for which actual measurement information is obtained for any date and time, for each unmeasured date and time that is the date and time when actual measurement information is not reported, the date and time when the actual measurement information is reported in the actual measurement area The communication state is estimated in consideration of the registered value of the communication state. In addition, regarding an unmeasured area for which actual measurement information is not obtained for any date and time, the communication state is estimated in consideration of the registered value of the area in which the communication state based on the actual measurement information is obtained. And the process control part 440 updates communication environment information with an estimation result. When this update ends, the new communication environment information generation process in step S12 ends.

Thereafter, each time new measurement information is received from any of the in-vehicle devices of the plurality of vehicles CR _k (k = 0, 1,...), The support server 400 executes the process of step S12 described above. New communication environment information is generated.

《Communication environment presentation processing》
Next, communication environment presentation processing by the route determination support device 100 will be described.

In this presentation process, when a destination is input by the user to the operation input unit 270, the control unit 210A of the navigation device 200A receives the destination designation (TPS) as shown in FIG. Upon receiving this destination designation, the control unit 210A sends a communication environment information request (CCQ: hereinafter referred to as “acquisition request”) to the support server via the wireless communication unit 240 and the network system 500 in step S13. Send to 400.

In the first embodiment, the control unit 210A designates the current position and the destination of the vehicle CR ₀ in the acquisition request.

In the support server 400, when an acquisition request is received via the transmission / reception unit 420, in step S14, the processing control unit 440 performs a process of returning communication environment information. In this return processing, first, the processing control unit 440 has communication environment information corresponding to the acquisition request, that is, individual communication environment information regarding a region that may pass when traveling from the current position of the vehicle CR ₀ to the destination. Is read from the storage device 410A. Then, the processing control unit 440 returns the read result as communication environment information data (CCD) to the navigation device 200A via the transmission / reception unit 420 and the network system 500.

It should be noted that extraction of a region that may pass when the processing control unit 440 travels from the current position of the vehicle CR ₀ to the destination is performed using a predetermined algorithm based on experiments, simulations, experiences, and the like. It has come to be.

Via the wireless communication unit 240 control unit 210A that received this return result, in step S15, with reference to the map data or the like in the received communication environment information data and a storage device 220A, object from the current position of the vehicle CR ₀ Present the communication environment to the ground. In the presenting process, the control unit 210A first considers the speed information obtained via the sensor interface 280 based on the positional relationship between the current position of the vehicle CR ₀ and each area, and the like for each area. Calculate the scheduled passage date and time.

Next, based on the calculation result, the control unit 210A specifies the communication environment to be presented for each area from the acquisition results of the communication environment information. Then, the control unit 210A refers to the map data and the like in the storage device 220A and causes the display unit 260 to display a map image from the current position of the vehicle CR ₀ to the destination, and also displays it in each area on the map. The color corresponding to the rank of the communication environment should be attached.

An example of presenting the communication environment displayed on the display unit 260 in this way is shown in FIG. In the example shown in FIG. 15, the rank of the communication environment is three stages, and the color of the first rank communication environment area in which the communication environment is good is represented by not hatching, and the communication environment is Next, the color of the area of the communication environment of the second favorable rank is represented by a broken line hatch. And the color of the area | region of the communication environment of the 3rd rank which can be said that communication environment is bad is represented by the solid line hatch.

In the first embodiment, the “first rank communication environment” is a communication environment in which content reproduction based on streaming reproduction data from the content server 600 can be performed without interruption. The “second rank communication environment” is a communication environment in which content reproduction based on streaming reproduction data from the content server 600 may be interrupted. The “third rank communication environment” is a communication environment in which streaming playback data cannot be received from the content server 600, or interruptions in content playback based on the streaming playback data frequently occur.

As described above, in the first embodiment, the support server 400 includes a plurality of vehicles CR _k (in communication state) including the reception power of the received wave from the base station 520 and the reception rate of the received data from the content server 600. (k = 0, 1,...), communication environment information including communication state information associated with date and time information for each of the plurality of areas is generated based on measurement results including measurement results, measurement positions, and measurement dates and times. ,Remember. Then, when the destination is specified in the navigation device 200A, the navigation device 200A acquires communication environment information from the support server 400, and based on the acquired communication environment information, the vehicle CR _{0 from} the current position to the destination. Present the communication environment.

Therefore, according to the first embodiment, when routing to properly secure the reception rate of the received data from the content server 600 in the navigation apparatus 200A that moves with the vehicle CR _0, appropriate support for the user It can be performed.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference mainly to FIGS.

FIG. 16 shows a schematic configuration of a navigation device 200B as a route determination support device according to the second embodiment of the present invention, and various devices that perform data communication with the navigation device 200B. The navigation device 200B is an aspect of the route determination support device 700B of the second embodiment described above, and the route determination support device is configured only from elements that move together with the vehicle CR.

<Configuration>
As shown in FIG. 17, the navigation device 200B includes a control unit 210B instead of the control unit 210A and a storage device 220A as compared with the navigation device 200A of the first embodiment described above. The only difference is that a storage device 220B as the storage means 731 is provided. Hereinafter, description will be made mainly focusing on these differences.

The storage device 220B is composed of a hard disk device or the like that is a nonvolatile storage device, similar to the storage device 220A described above. This storage device 220B is different from the storage device 220A in that it further stores communication environment information (CCI). The communication environment information stored in the storage device 220B is configured in the same manner as the communication environment information stored in the storage device 410 described above.

The control unit 210B includes a central processing unit (CPU) and its peripheral circuits in the same manner as the control unit 210A described above. The various functions described above are realized by the control unit 210B executing various programs. Among these functions, functions as the measurement unit 732, the generation unit 733, and the control unit 711B in the second embodiment described above are included.

This control unit 210B is mainly different from the control unit 210A in that the function as the generation unit 733 is realized instead of the function of the transmission unit. The control unit 210B is configured to perform the same processing as that for realizing the function of the generating unit 723 by the processing control unit 440 described above when realizing the function as the generating unit 733.

<Operation>
Next, the operation of the navigation device 200B configured as described above will be described mainly focusing on the support processing at the time of route determination.

<< Generation of communication environment information >>
First, generation processing of communication environment information in the storage device 220B by the navigation device 200B will be described.

In this generation process, as shown in FIG. 18, first, in step S51, the control unit 210B of the navigation device 200B determines whether or not the measurement information acquisition time has come. If the result of this determination is negative (step S51: N), the process of step S51 is repeated.

On the other hand, when the measurement information acquisition time comes and the result of determination in step S51 is affirmative (step S51: Y), the process proceeds to step S52. Thereafter, in steps S52 to S54, the control unit 210B performs processing similar to the processing performed by the control unit 210A in steps S21 to S23 (see FIG. 12) of the first embodiment described above to generate actual measurement information.

That is, in step S52, the control unit 210B obtains the reception power of the reception signal from the base station 520 from the wireless communication unit 240, and if content data from the content server is received at this time, Measure the content data reception rate. Subsequently, in step S53, the control unit 210B specifies the current position of the vehicle CR as the measurement position, and specifies the current date and time as the measurement date and time. In step S54, the control unit 210B generates actual measurement information in which the measurement position and the measurement date / time are added to the measured communication state.

Next, in steps S55 to S57, the control unit 210B performs the same processing as the processing by the processing control unit 440 in steps S32 to S34 (see FIG. 13) of the first embodiment described above. As a result, new communication environment information is generated and stored in the storage device 220B.

That is, in step S55, the control unit 210B reads the registration value of the communication state to be updated corresponding to the actual measurement information from the storage device 220B. Subsequently, in step S56, the control unit 210B calculates new communication state information based on the reading result in step S55 and the value of the communication state in the actual measurement information. Then, in step S57, the control unit 210B updates the reception state information in the combination of the area corresponding to the actual measurement information and the date and time in the storage device 220B to new reception state information, thereby obtaining new communication environment information. Generate.

Thus, when the generation of new communication environment information based on the new actual measurement information is completed, the process returns to step S51. Thereafter, the processing in steps S51 to S57 is repeated, and new communication environment information is generated and stored in the storage device 220B each time new measurement information acquisition time comes.

《Communication environment presentation processing》
Next, communication environment presentation processing by the navigation device 200B will be described.

In this presentation process, the control unit 210B of the navigation device 200B reads the communication environment information directly from the storage device 220B, and the same process as that of the control unit 210A in step S15 of the first embodiment described above. I do. As a result, the communication environment in each area on the map is displayed on the display unit 260 in the map image from the current position of the vehicle CR to the destination.

As described above, in the second embodiment, the navigation device 200B measures the communication state including the reception power of the received wave from the base station 520 and the reception rate of the received data from the content server 600, and the measurement result. Based on the actual measurement information including the measurement position and the measurement date and time, communication environment information including communication state information associated with the date and time information for each of the plurality of areas is generated and stored in the storage device 220B. When the destination is specified in the navigation device 200B, the navigation device 200B reads the communication environment information from the storage device 220B and presents the communication environment from the current position of the vehicle CR to the destination.

Therefore, according to the second embodiment, as in the first embodiment described above, when determining the route for appropriately securing the reception rate of the received data from the content server 600 in the navigation device 200B that moves with the vehicle CR. Appropriate support can be provided to users.

[Modification of Example]
The present invention is not limited to the above-described embodiments, and various modifications can be made.

For example, in the first and second embodiments, the communication environment is ranked in three stages, but the communication environment can be ranked in any number of stages.

In the first and second embodiments, the colors corresponding to the ranks of the communication environment are attached to each area on the map, but the pattern and transparency may be changed.

In the first and second embodiments described above, the presentation control of the communication environment is performed by controlling the display image on the display unit 260. However, the audio output from the sound output unit 250 is also used. You can also.

Also, when ranking communication environments, it is possible to rank based on a uniform standard regardless of the type of content to be played back. It is also possible to specify the type of content to be played back and change the ranking criteria according to the type of content.

Further, the route search without considering the communication environment may be performed by the navigation device 200A or the support server 400 in the first embodiment or the navigation device 200B in the second embodiment. When the route search is performed, the searched route can be displayed on the display unit 260 together with the communication environment.

Further, in the first and second embodiments described above, the position of the base station that has jurisdiction over each area is not considered in estimating the communication state regarding the combination of the area where actual measurement information is not reported and the date and time. The estimation may be performed in consideration of the position of the base station. Further, for an unmeasured region where measured information is not reported for any date and time, estimation may be performed in consideration of only the position of the base station.

In the first embodiment, the actual measurement information measured when the host vehicle is traveling is sent to the support server, and only the support server includes a storage device for storing the communication environment information. On the other hand, actual measurement information measured when the vehicle is running is stored in a storage device installed in the own vehicle, and communication environment information generated based on the actual measurement information measured by a third party is supported. You may make it acquire from a server.

In the first and second embodiments, the communication state is estimated for the combination of the area and date / time for which the actual measurement information is not reported, and the estimation result is registered in the storage device. On the other hand, only the registered value based on the actual measurement information is stored in the storage device, and at the time when the communication environment information is presented, the combination of the area where the actual measurement information is not reported and the date / time as necessary The communication state may be estimated.

In the first and second embodiments described above, the navigation device has a content playback function based on data received by communication with the content server. However, the content playback function is separated from the navigation device, and content playback is performed separately. You may make it prepare the apparatus which has a function.

In the first and second embodiments, the device that moves with the moving body is the navigation device. However, the device that moves with the moving body may be a mobile phone device or the like.

In the first and second embodiments described above, the functions of the respective means other than the storage means are realized by the execution of the program by the computer. It may be configured by hardware using (Large Scale Integrated Circuit) or the like.

Claims

A route determination support device for supporting determination of a moving route of a mobile body,
Storage means for storing communication environment information including communication state information associated with date and time information for each of the plurality of areas;
An information presentation means for presenting information to the user;
Control means for causing the information presenting means to present information related to the communication environment in each of the areas between the current position of the mobile object and the destination based on the current position and current date and time of the mobile object and the communication environment information. When;
A route determination support apparatus comprising:
A mobile terminal device that moves with the mobile body;
A support server capable of communicating with the mobile terminal device;
The mobile terminal device includes the information presentation unit and the control unit,
In addition to the storage means, the support server includes:
A collecting means for collecting actual measurement information of the communication state at the position and date and time measured by each of the plurality of mobile objects;
Generating means for generating the communication environment information based on the collection result by the collecting means and storing the communication environment information in the storage means;
Reporting means for sending the communication environment information to the mobile terminal device in response to an acquisition request from the mobile terminal device;
The route determination support apparatus according to claim 1, wherein
The moving body is included in the plurality of moving bodies,
The mobile terminal device
Measuring means for measuring the communication state;
Transmission means for sending information obtained by adding a measurement date and time and a measurement position to the measurement result by the measurement means as the actual measurement information to the support server;
The route determination support apparatus according to claim 2, wherein
Measuring means for measuring the communication state;
Generating means for generating the communication environment information based on actual measurement information, which is information obtained by adding a measurement date and time and a measurement position to the measurement result by the measurement means, and storing the communication environment information in the storage means;
Moving with the moving body;
The route determination support apparatus according to claim 1, wherein
The generating means includes
Among each of the plurality of areas, each of the actual measurement areas that are the areas where the actual measurement information at any date and time is reported, is related to each of the actual measurement areas based on the actual measurement information corresponding to each of the actual measurement areas. Generate communication environment information,
Of each of the plurality of areas, each of the unmeasured areas where the actual measurement information is not reported for any date and time is estimated by considering communication environment information related to the actual measurement area. Generate communication environment information for each of the measurement areas,
The route decision support device according to any one of claims 2 to 4, wherein
The generating means includes
Among each of the plurality of areas, each of the actual measurement areas that are the areas where the actual measurement information at any date and time is reported, is based on the actual measurement information corresponding to each of the actual measurement areas. Generate communication environment information,
Of each of the plurality of regions, each of the unmeasured regions that are the regions where the actual measurement information is not reported for any date and time is estimated in consideration of the position of the base station that has jurisdiction over the unmeasured region. To generate communication environment information regarding each of the unmeasured areas,
The route decision support apparatus according to any one of claims 2 to 5, wherein
The generation means estimates each of the unmeasured dates and times when the measured information is not reported in the measured region in consideration of the communication environment information of the date and time when the measured information is reported in the measured region. 7. The route determination support apparatus according to claim 5, wherein communication environment information relating to each of the unmeasured dates and times is generated.
The route determination support device according to any one of claims 1 to 7, wherein the communication state information includes a reception rate of the data transmitted from the content server in the mobile unit.
The route determination support device according to any one of claims 1 to 8, wherein the date and time information includes a time zone and a day of the week.
The information presentation means includes image display means,
The control means, in each area between the current position and the destination of the moving body on a map, shows the communication environment of each area corresponding to the date and time when the moving body is estimated to move to each area. Display on the display means,
The route decision support apparatus according to any one of claims 1 to 9, wherein
A route determination support method for supporting determination of a moving route of a moving body,
A communication environment acquisition step of acquiring communication environment information including communication state information associated with date and time information for each of the plurality of areas;
A specifying step of specifying a current position and a current date and time of the mobile;
A presentation step of presenting a communication environment in each of the areas between the current position of the mobile object and the destination based on the identification result in the identification step and the acquisition result in the communication environment acquisition step;
A route determination support method comprising:
12. A route determination support program that causes a calculation means to execute the route determination support method according to claim 11.
13. A recording medium in which the route determination support program according to claim 12 is recorded so as to be readable by a calculation means.