JP4075649B2 - Vehicle information communication device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an information communication device for a vehicle that acquires a plurality of contents from an information providing server installed outside the vehicle via a communication terminal inside the vehicle.
[0002]
[Prior art]
In recent years, telematics, which is an information service for vehicles that can receive store information search, music, news distribution, etc. using wireless communication even while driving a vehicle whose current position changes continuously, has been actively performed. ing. Telematics refers to a service in which information is wirelessly transmitted to a communication device mounted on a vehicle and displayed on a driver's seat display.
[0003]
As this type of technology, for example, those described in the following documents are known (see Patent Document 1). In the invention described in this document, the destination is set via the user input unit, the CPU searches for the optimum route from the current position to the destination based on the route selection data, and the CPU is further searched. The intermediate point on the optimum route is set as a relay point. Next, after destination setting and route selection processing, when the user gives an instruction to start using the network service via the user input unit, processing for selecting an optimum access point to be connected for using the network service is started. In this access point selection process, the CPU specifies the relay point that the moving body is scheduled to pass next from the current position of the moving body. Next, the CPU identifies the area code of the public telephone network at the relay point, and automatically selects the access point that minimizes the communication cost. When the optimum access point is selected, the CPU acquires the connection destination telephone number and the communication condition of the optimum access point, and transmits the optimum access point via the communication I / F unit and the communication means such as a wireless telephone connected thereto. Dial-up connection to and start data communication.
In such a telematics service, when a telematics user traveling in a vehicle requests a plurality of contents at a certain point at the same time, the in-vehicle device normally downloads data in the order operated by the user. A request is made to a base station / radio base station control apparatus (hereinafter referred to as a base station). However, when this method is used, there is a problem in that the time required for downloading all contents greatly depends on the radio wave environment of a travel route having a communicable zone or a non-communicable zone.
[0004]
Next, a configuration and a procedure for downloading data in the order operated by the user in consideration of the radio wave environment will be described with reference to FIGS. 12 and 13.
[0005]
FIG. 12 is a diagram illustrating a configuration of a communication network of a radio communication system in telematics. In FIG. 12, telematics is realized by providing a vehicle 1201 with an in-vehicle device 1203 and a communication device 1202 such as a mobile phone. The base station 1204 (-1, -2, -3) controls the communication line between the portal 1205, which is an entrance to the Internet network 1206, and the communication device 1202. The content server 1207 (-1, -2, -3) stores information such as store information, music, and news, and provides the information in response to a user request.
[0006]
FIG. 13 shows a case where a user requests a plurality of contents at a certain point at the same time and downloads data in the order operated by the user in consideration of the radio wave environment in the communication network of the wireless communication system in the telematics. It is a figure for demonstrating operation | movement. Hereinafter, the in-vehicle device will be described as including a communication device.
[0007]
In FIG. 13, the travel route 1301 has a communicable zone 1302 in which a certain throughput can be obtained even during travel and a communicable zone 1303 such as a tunnel or a shadow of a building. As an example, it is assumed that the user makes a content download request in the order of “destination video”, “detailed map”, “music”, and “text news” at the point P1. If the data size of each content is 50 kB, 100 kB, 3 MB, and 5 kB, the download time is proportional to the data size, so “music”, “detailed map”, “destination video”, “text news” ”In order.
[0008]
In FIG. 13, the in-vehicle device 1203 requests the base station 1204 to download the “destination video” because the radio wave reception sensitivity is good at the point P1. However, the in-vehicle device 1203 cannot complete the download of the “destination video” while traveling in the communicable zone of the points P1 to P2 due to a lack of communication time. The vehicle 1304 enters the incommunicable zone at the points P2 to P3 when the vehicle passes the point P2, and the wireless line is disconnected. The in-vehicle device 1203 determines that communication is not possible at the points P2 to P3 from the radio wave reception sensitivity, and does not request the base station 1204 to download the “destination video”. The vehicle 1304 enters the communicable zone after passing the point P3. Here, the in-vehicle device 1203 determines that the download is possible because the radio wave reception sensitivity is good, and can re-set the wireless line, and re-download the “destination video” to the base station 1204. Request. Then, the in-vehicle device 1203 completes the download of the “destination video” in the communicable zone of the points P3 to P4.
[0009]
As described above, when the radio wave reception sensitivity is good at the point where the data download request is started, the in-vehicle device 1203 makes a data download request. By repeating such a procedure, the download of all the content 1305 requested by the user is completed at the point P11.
[0010]
[Patent Document 1]
JP 2002-16541 A
[0011]
[Problems to be solved by the invention]
As described above, with the conventional telematics technology, even if data is downloaded in consideration of the radio wave environment of the travel route, data with a large capacity can be downloaded compared to an environment where data with a small capacity can be downloaded. Since the environment is small, it took a lot of time to download and set up the wireless line repeatedly. For this reason, there is a problem that the time required for downloading all contents cannot be shortened depending on the combination of the download position and the contents.
[0012]
Furthermore, if the radio environment of the travel route includes an incommunicable zone at a point where a plurality of contents are requested at the same time, the time until the download of all contents is completed, the time and place are unknown, and the user There was a problem that content download did not complete before arriving at the site. In addition, there is a problem in that it is impossible to accurately determine whether the requested number of contents is changed or canceled.
[0013]
Accordingly, the present invention has been made in view of the above, and an object of the present invention is to control information acquisition for a vehicle by controlling acquisition scheduling of a plurality of contents and shortening the acquisition time of the plurality of contents. To provide an apparatus.
[0014]
[Means for Solving the Problems]
In order to achieve the above object, the means for solving the problems of the present invention is the vehicle information communication apparatus for communicating with a content server outside the vehicle and downloading a plurality of contents from the content server. The travel route on which the vehicle equipped with the communication device travels throughput , Based on the requested data size and vehicle speed information, from the download request start point that requested the download of multiple contents the nearest Communication area In order Calculate the data size of the downloadable content, compare the calculated data size with the data size of the plurality of contents, and order the contents having the data size smaller than the calculated data size and the largest of the plurality of contents Where to download Each in order from the nearest communicable zone after the download request start point It is characterized by having a scheduling control unit that assigns to a communicable zone and controls the order of downloading a plurality of contents.
[0015]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the download completion time of the some content which a user requests | requires can be shortened.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0017]
FIG. 1 is a diagram showing a configuration of a vehicle information communication apparatus according to a first embodiment of the present invention. The information communication apparatus according to the first embodiment shown in FIG. 1 is mounted on a vehicle, and includes a data input unit 101, a position detection unit 102, a travel route calculation unit 103, a vehicle speed calculation unit 105, a traffic information acquisition unit 106, and a scheduling control unit. 109, a data transmission / reception unit 111 and a display unit 112.
[0018]
In FIG. 1, a data input unit 101 is an interface through which a user inputs a destination or requests a content using a touch panel, a remote controller, or the like. The position detection unit 102 detects the current position of the host vehicle using a gyro, GPS (Global Positioning System), or the like. The travel route calculation unit 103 calculates a travel route based on the destination information input by the user, the current position information, and the information in the map database 104. The map database 104 is a database that accumulates legal speed information together with map information.
[0019]
The vehicle speed calculation unit 105 calculates an average vehicle speed based on vehicle speed information collected from a vehicle speed sensor (not shown). The traffic information acquisition unit 106 acquires traffic information such as traffic congestion on the travel route. The acquired traffic information is used as a parameter for vehicle speed information when scheduling is performed. The radio wave environment database 107 corresponds to the map database 104 and stores information on the radio wave environment along the road. The information on the radio wave environment includes, for example, throughput information corresponding to a map as shown in FIG. The management table 108 stores information such as an assumed data size of content as shown in FIG.
[0020]
The scheduling control unit 109 serves as a control center when acquiring and controlling a plurality of contents, and is configured by a microcomputer or the like that operates based on software programmed with a scheduling control procedure. The scheduling control unit 109 sorts a plurality of contents requested by the user in descending order of data size, and has a large data size based on the information on the radio wave environment such as current position information, vehicle speed information, throughput, and travel route information. Is prioritized and mapping is performed on position information.
[0021]
The memory 110 stores the content information requested by the user, the content information sorted in descending order of the data size, the scheduling result and the information mapped to the location information, and the time until the download of the content and the time As well as location information. The data transmission / reception unit 111 receives content information from the scheduling control unit 109 and makes a content download request to the portal. The display unit 112 displays information on the current communication status, or information on the time until the download of the content is completed, and the time and place thereof to the user.
[0022]
FIG. 2 is a diagram illustrating an example of a correspondence relationship between a map and communication availability stored in the radio wave environment database 107. FIG. 2 corresponds to the travel route described in FIG. 13, and is data when the vehicle speed is about 36 km / h, for example.
[0023]
In FIG. 2, a throughput of 100 kbps is guaranteed in the communicable zone 202 on the travel route 201, and wireless communication is impossible in the incommunicable zone 203, and the throughput is not guaranteed. Similarly, the wireless line setting time corresponding to the vehicle speed of the vehicle 204 is also stored. As described above, the map database 104 includes information 205 that associates latitude and longitude information with vehicle speed, throughput, and wireless channel setting time. In addition, as information regarding the radio wave environment, data by actual measurement, computer simulation data from the base station position, or probe information is used.
[0024]
FIG. 3 is a diagram illustrating an example of the correspondence relationship between the content and the estimated data size stored in the management table 108. The scheduling control unit 109 described above specifies the data size from the type of content with reference to the correspondence relationship shown in FIG. 3 when information on the data size is not presented from the content server or portal.
[0025]
Next, the scheduling operation in the first embodiment will be described with reference to FIG. 4 and FIG.
[0026]
FIG. 4 is a flowchart showing a procedure in which the scheduling control unit 109 of the information communication apparatus according to the first embodiment performs scheduling of a plurality of contents.
[0027]
FIG. 5 shows a case where, when the user requests a plurality of contents at a certain point at the same time in the first embodiment, the apparatus is based on the information on the radio environment of the travel route, the data size of the contents requested by the user, and the vehicle speed information. FIG. 6 is a diagram for explaining an operation when scheduling of data download is scheduled.
[0028]
As the vehicle speed information, the average vehicle speed, information on the travel route traffic information such as lowering the vehicle speed in a congested area with respect to the average vehicle speed, or the legal speed of the travel route stored in the map database 104, etc. Can be considered. In this example, an example using an average vehicle speed is given. Further, the radio wave environment of the communicable zone 502 and the incommunicable zone 503 in FIG. 5, the user's requested content and its size, and the like are the same as those in FIG.
[0029]
In FIG. 5, it is assumed that the user makes a content download request in the order of “destination video”, “detailed map”, “music”, and “text news” at the point P1.
[0030]
The scheduling control unit 109 sorts a plurality of contents requested by the user in descending order of data size and stores them in the memory 110 (step S401). As sorting criteria, information presented in advance by the content server or portal, or information stored in the management table 108 is used. In this example, the plurality of contents are sorted in the order of “music”, “detailed map”, “destination video”, “text news”, for example.
[0031]
Next, in order to perform scheduling, information on the content having the largest data size is taken out from the memory 110 (step S402). The corresponding content in this example is “music (data size 3 MB)”.
[0032]
Next, the downloadable data size is calculated using the radio wave environment such as the distance and throughput of the communicable zone 502 closest to the download request start point from the vehicle speed information and the travel route information. Here, calculation is performed in consideration of the radio channel setting time between the present apparatus and the base station (step S403).
[0033]
Here, if the distance of the communicable range is L [m], the throughput of the communicable range is T [bps], the average vehicle speed at the point P1 is V [m / s], and the wireless line setting time is t [s] The downloadable data size can be obtained by the following formula 1.
[0034]
[Expression 1]
S = {L− (t × V)} T / V (Formula 1)
As the vehicle speed information, when the user requests a plurality of contents at the same time, the vehicle speed information of other vehicles traveling along the travel route 501, for example, the average vehicle speed of a plurality of vehicles, traffic information such as traffic congestion, etc. The vehicle speed information may be taken into account.
[0035]
Communication is possible as shown by information 505 in FIG. 5 showing the relationship among the communicable range, distance, throughput, average vehicle speed at the point P1, wireless channel setting time, and downloadable data size from the calculation by the above formula (1). The data size that can be downloaded in the range P1 to P2 is calculated to be 25 [kB].
[0036]
Next, it is determined whether or not the data size of the largest content is smaller than the calculated data size (step S404). If the result of the determination is larger than the calculated data size, it is impossible to complete the download in the communicable zone 502, so the next largest content is extracted from the memory 110 (step S402) and compared again. (Step S404). On the other hand, if the calculated data size is smaller than the calculated data size, the download can be completed in the communicable zone 502, and the content is stored in the memory 110 together with the information on the scheduled download start point of the communicable zone 502 (step 110). S405).
[0037]
In this example, the data size (25 kB) that can be downloaded at the points P1 and P2 that are the closest communicable zone 502 from the download request start point is compared with the data size of “music (3 MB)” that is the largest content size. It will be. As a result, since the data size of “music” is smaller than the data size that can be downloaded in the sections P1 to P2, the scheduling control unit 109 displays the “detailed map (data size 100 kB)” that is the second largest data size. Next, compare. Repeating such comparison, the scheduling control unit 109 determines that “text news (data size 5 kB)” can be downloaded in the sections P1 to P2, and stores the information of “text news” together with the latitude and longitude information of the point P1. It is stored in the memory in the scheduling control unit 109.
[0038]
It should be noted that, in order to download “text news” theoretically, a travel distance of 54 m is required. Therefore, it is determined that other contents cannot be downloaded in the remaining 16 m of the points P1 to P2, and the scheduling control unit 109 performs the following operation. The scheduling at points P3 to P4 is calculated. Then, the scheduling control unit 109 determines the content “destination video” to be downloaded at the points P3 to P4 in the same manner as described above.
[0039]
By repeating such control, as indicated by reference numeral 506 in FIG. 5, a plurality of contents input by the user in the order of “destination video”, “detailed map”, “music”, “text news” are processed. Then, as indicated by reference numeral 507 in FIG. 5, the scheduling control unit 109 performs scheduling in the order of “text news”, “destination video”, “music”, and “detailed map”. Further, as shown in FIG. 5, the zone where the content is downloaded is mapped.
[0040]
Note that the scheduling calculation time is minute, and the communication start point is point P1. Further, in the communicable zone 502 where mapping has been completed, if there is a distance where other contents can be downloaded, that zone is also used. In this example, since 54 m is theoretically required to download “text news”, it is determined that other contents cannot be downloaded in the remaining 16 m at the points P1 to P2, and the scheduling control unit 109 next The scheduling to the points P3 to P4 is calculated.
[0041]
Next, it is determined whether scheduling of all contents and mapping to the map is completed (step S406). If not completed, the process returns to step S402, and if completed, the vehicle is It is determined whether or not 504 has arrived at a communicable point stored in the memory 110 (step S407), and if it has arrived, the scheduling control unit 109 at the time of reaching the data transmission / reception unit 111 downloads the mapped content. (Step S408). Note that the scheduling calculation time is minute, and the communication start point is point P1.
[0042]
The first embodiment is an embodiment corresponding to the invention described in any one of claims 1, 3 and 4.
[0043]
As described above, in the first embodiment, the download of all the content requested by the user is completed at the point P12, compared with the conventional example in which the download of all the content is completed at the point P11. Thus, the content download time can be shortened.
[0044]
The above effect corresponds to the effect achieved by the technical content described in any one of claims 1, 3 and 4.
[0045]
FIG. 6 shows a configuration of a base station that includes a vehicle information communication device according to the second embodiment of the present invention and controls communication performed between the vehicle information communication device mounted on the vehicle and the content server. FIG. A feature of the second embodiment shown in FIG. 1 is that the base station includes an information communication device having a function of controlling download of content from the content server, and the information communication device of the base station performs content download control. It is in that.
[0046]
In FIG. 6, the information communication apparatus of the base station according to the second embodiment is configured to include an RF (Radio Frequency) unit 602, a signal processing unit 603, a network interface 604, and a download control unit 605.
[0047]
The RF unit 602 converts a signal to be transmitted to the vehicle information communication device via the antenna 601 into a transmission frequency and a signal received from the vehicle information communication device into the original frequency. The signal processing unit 603 performs baseband signal processing. The network interface 604 transmits and receives signals to and from the portal. The download control unit 605 performs scheduling for the download order in consideration of the combination of the position where the data of the plurality of contents requested by the user is downloaded and the contents.
[0048]
FIG. 7 is a diagram showing the configuration of the download control unit 605 shown in FIG.
[0049]
7, the download control unit 605 includes a scheduling control unit 702, a memory 703, a map database 704, a travel route calculation unit 705, a radio wave environment database 706, and a traffic information acquisition unit 707. 1 is the same as the scheduling control unit 109, the memory 110, the map database 104, the travel route calculation unit 103, the radio wave environment database 107, and the traffic information acquisition unit 106 shown in FIG.
[0050]
The download control unit 605 receives information on contents such as current position information, destination information, data size, and vehicle speed information (when using the average vehicle speed) from the signal processing unit 603 shown in FIG. Based on the information stored in 704 and the radio wave environment database 706, scheduling of a plurality of contents requested by the user is performed. The scheduling mechanism is the same as that described in the first embodiment. As the vehicle speed information, when the user requests a plurality of contents at the same time, the vehicle speed information of other vehicles traveling along the travel route, for example, the average vehicle speed of a plurality of vehicles, traffic information such as traffic congestion, etc. The added information may be used as vehicle speed information. On the other hand, when the average vehicle speed is not used as the vehicle speed information, scheduling is performed based on the legal speed prepared in advance on the base station side without receiving vehicle speed information from the vehicle information communication device.
[0051]
FIG. 8 shows a vehicular information communication apparatus—base station—when the base station according to the second embodiment performs scheduling related to the download order in consideration of the combination of the data download position and the content at the download request start point. It is a figure which shows the operation | movement sequence between a portal and a content server.
[0052]
Note that the vehicle information communication apparatus needs to include the position detection unit 102 and the vehicle speed calculation unit 105 illustrated in FIG. 1 in addition to the communication device that performs communication with the base station. Embodiment described below is an example at the time of using average vehicle speed as vehicle speed information.
[0053]
When the user requests a plurality of contents from the portal, the vehicular information communication apparatus makes a radio line setting request to the information communication apparatus of the base station (sequence S801), and the information communication apparatus of the base station Transmits a wireless line setting response to the vehicle information communication device (sequence S802). After the wireless line is set up (sequence S803), the vehicle information communication apparatus transmits current position information, destination information, and average vehicle speed together with information on a plurality of contents requested to the information communication apparatus of the base station (sequence S804). .
[0054]
The information communication apparatus of the base station that has received this data transmits only the requested content to the portal (sequence S805), and the portal instructs each content server to provide information (sequence S806). The portal that has received the content data and the content size from the content server (sequence S807) transfers it to the information communication apparatus of the base station (sequence S808). The information communication device of the base station performs the same scheduling as in the first embodiment using the received content data and content size and the information received from the vehicle information communication device, and download start position information and The corresponding content is calculated (sequence S809).
[0055]
After the scheduling is completed, the base station information communication apparatus first transmits only the download start position information of all contents such as latitude and longitude information to the vehicle information communication apparatus (sequence S810). The vehicle information communication device transmits a download start request to the information communication device of the base station when the information and the vehicle position calculated by the mounted position detection unit match and match. If the wireless line has been released when the download start request is transmitted, the wireless line is first reset, and then the download start request is transmitted (sequence S811).
[0056]
When receiving the download start request from the vehicle information communication device, the base station information communication device downloads the corresponding content data (sequence S812). The information communication apparatus of the base station transmits all the content data to the vehicle information communication apparatus, and then transmits a wireless line release request to the vehicle information communication apparatus as necessary (sequence S813). The line is released (sequence S814). Thereafter, when the remaining content to be downloaded remains in the information communication device of the base station, the vehicle information communication device makes a download start request based on the download start position information and acquires the content. Note that the base station information communication apparatus monitors the position of the vehicle based on the current position information transmitted from time to time by the vehicle information communication apparatus.
[0057]
The second embodiment is an embodiment corresponding to the invention described in any one of claims 2, 3 and 4.
[0058]
As described above, in the second embodiment, the information communication device of the base station downloads the content in consideration of the combination of the download position and the content based on the radio environment information of the travel route. Scheduling to do. Thereby, the time required for downloading the requested plurality of contents can be shortened, and the processing load of the vehicle information communication apparatus can be reduced.
[0059]
The above effect corresponds to the effect achieved by the technical contents described in any one of claims 2, 3 and 4.
[0060]
Next, a third embodiment of the present invention will be described. The feature of the third embodiment is that, in the previous first embodiment or the second embodiment, the download completion time, time and place of all the contents requested by the user at the download request start point. It is to be able to recognize. The procedure will be described below.
[0061]
FIG. 9 is a flowchart showing a procedure for the vehicle information communication apparatus shown in FIG. 1 to display the download completion time, time, and location of all the contents requested by the user. FIG. 9 is linked to the flowchart shown in FIG.
[0062]
In the procedure shown in FIG. 9, the scheduling control unit 109 schedules all the contents requested by the user (step S901). Here, since the scheduling control unit 109 has vehicle speed information, travel route throughput, data size of each content, and position information for starting download, the time and place where the download of all content is completed using them. Can be calculated. Regarding the time, information of a current time output unit (not shown in FIG. 1) and the calculated time are added (step S902). Thereafter, in the first embodiment, the calculation result is output to the display unit 112 (step S903), and the time, time, and place where the download of all contents is completed are displayed (step S904).
[0063]
On the other hand, in 2nd Embodiment, the information communication apparatus of a base station transmits a calculation result with respect to the information communication apparatus for vehicles, and displays on the information communication apparatus for vehicles. In addition, the distance to the destination and the estimated arrival time, the distance to the place where the download of all the content is completed, and the time difference are calculated and displayed, or the time when the scheduled download of each content is completed It is also possible to calculate and display the time and place.
[0064]
The third embodiment is an embodiment corresponding to the invention described in claim 5 or 6.
[0065]
As described above, in the third embodiment, by using the scheduling result described in the first embodiment and the second embodiment, the user can start the download request from the display on the display unit. , It is possible to estimate the time, time and place where the download of all contents is completed. Further, it is possible to know the distance and time from the completion of downloading all the contents until the arrival at the destination. Thereby, based on the distance and time until it arrives at the destination, it is possible to more accurately determine the requested number of contents to be changed and canceled.
[0066]
The above effect corresponds to the effect achieved by the technical content described in claim 5 or 6.
[0067]
Next, a fourth embodiment of the present invention will be described. The feature of the fourth embodiment is that, in the first embodiment or the second embodiment, a vehicle that is downloading data by scheduling control while traveling is out of the travel route. In such a case, the vehicle information communication apparatus or the base station information communication apparatus reschedules based on the newly set travel route. The procedure will be described below.
[0068]
FIG. 10 shows an information communication device for a vehicle or an information communication device of a base station based on a newly set travel route when a vehicle downloading data while traveling by scheduling control is out of the travel route It is a figure for demonstrating the procedure to perform rescheduling.
[0069]
In FIG. 10, the environment of the travel route 1001, that is, the communicable zone 1002, the incommunicable zone 1003, and the content requested by the user are the same as those in FIG. The vehicle 1004 downloads data while traveling on the travel route 1001 by the scheduling control shown in FIG. Here, it is assumed that after the vehicle 1004 downloads “text news” and “destination video”, the vehicle 1004 has deviated from the travel route 1001 when passing the point P4.
[0070]
The vehicle information communication device or the base station information communication device determines from the current position information of the vehicle being monitored that the vehicle 1004 has deviated from the set travel route 1001, sets a new travel route 1005, Display to the user. Also, the vehicle information communication apparatus or the base station information communication apparatus performs rescheduling with the point P13 which is the current position of the current vehicle 1004 as the download start point. In the case shown in FIG. 10, since the vehicle information communication apparatus has already downloaded “text news” and “destination video” between the points P1 and P4, as shown by reference numeral 1006 in FIG. In addition, the remaining contents “music” and “detailed map” are rescheduled for the new travel route 1005. The rescheduling procedure is the same as that described in the first embodiment or the second embodiment.
[0071]
The fourth embodiment is an embodiment corresponding to the invention described in claim 7.
[0072]
As described above, in the fourth embodiment, even when the vehicle deviates from the travel route that is the basis of scheduling control, it becomes possible to perform rescheduling control, and downloading of a plurality of contents requested by the user is possible. Completion time can be shortened.
[0073]
The above effect corresponds to the effect achieved by the technical content described in claim 7.
[0074]
Next, a fifth embodiment of the present invention will be described. The feature of the fifth embodiment is that in the previous first embodiment or the second embodiment, a vehicle that is downloading data while traveling by scheduling control is in the middle of a traveling route. It is expected that the vehicle will stop or slow down due to traffic congestion or a gas station. In such a case, the vehicle information communication device or the base station information communication device may cancel the scheduling control. It is in that. The procedure will be described below.
[0075]
FIG. 11 shows a vehicle information communication device or a base station information communication when a vehicle that is downloading data while traveling by scheduling control is performing a slow driving due to a traffic jam caused by a traffic accident, for example. It is a figure for demonstrating the procedure in which an apparatus cancels | releases scheduling control.
[0076]
11, the environment of the travel route 1101, that is, the communicable zone 1102, the incommunicable zone 1103, and the content requested by the user in the travel route 1101 are the same as those in FIG. The vehicle 1104 downloads data while traveling on the travel route 1101 by the scheduling control shown in FIG. It is assumed that when the vehicle 1104 downloads the “destination video” in the sections P3 to P4, the vehicle 1104 is driving slowly in the sections P3 to P4 due to a traffic jam due to a traffic accident on the travel route 1101.
[0077]
At this time, the vehicle information communication device or the base station information communication device determines whether the vehicle is in the communicable zone 1102 or stops at an intersection from the current position information of the vehicle 1104, vehicle speed information at the local point, and the map database. It monitors whether it is at a point where it should slow down, and whether it is in a state of stopping or slowing down. Here, when the vehicle 1104 is in the communicable zone 1102 and is stopped or driving slowly except at an intersection or the like, the vehicle information communication device or the base station information communication device is a road where the user is congested. It is determined that the user is at the station or is on the way to a gas station, etc., and the scheduling control is terminated, and as much content as possible is downloaded at that point.
[0078]
In the case shown in FIG. 11, in the scheduling control initially set, “music” is downloaded when the vehicle 1104 reaches the point P5, but by releasing the scheduling control, “ After downloading "Destination video", download "Music". If traffic information, vehicle stop time, or the like is used as the determination criterion, the vehicle information communication apparatus or the base station information communication apparatus can more accurately determine the scheduling control termination.
[0079]
In FIG. 11, scheduling is performed again when the congestion is resolved and the vehicle 1104 resumes running and there is content that has not yet been downloaded. The rescheduling procedure is the same as that described in the first embodiment or the second embodiment.
[0080]
The fifth embodiment is an embodiment corresponding to the invention described in claim 8.
[0081]
As described above, in the fifth embodiment, scheduling control can be canceled when the vehicle is stopped or driven slowly due to traffic jams, detours, etc., and a plurality of contents requested by the user are requested. Download completion time can be shortened.
[0082]
The above effect corresponds to the effect achieved by the technical contents described in claim 8.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration of a vehicle information communication device according to a first embodiment of the present invention.
FIG. 2 is a diagram illustrating an example of a correspondence relationship between a map and communication availability.
FIG. 3 is a diagram illustrating an example of a correspondence relationship between content and an estimated data size.
FIG. 4 is a flowchart showing an operation procedure of the first embodiment.
FIG. 5 is a diagram for explaining the operation of the first embodiment;
FIG. 6 is a diagram illustrating a configuration of a base station including an information communication device according to a second embodiment of the present invention.
FIG. 7 is a diagram illustrating a configuration of a download control unit.
FIG. 8 is a diagram showing an operation sequence of the second embodiment of the present invention.
FIG. 9 is a flowchart showing an operation procedure according to the third embodiment of the present invention.
FIG. 10 is a diagram for explaining the operation of the fourth exemplary embodiment of the present invention.
FIG. 11 is a diagram for explaining the operation of the fifth exemplary embodiment of the present invention.
FIG. 12 is a diagram showing a configuration of a communication network of a wireless communication system in conventional telematics.
13 is a diagram for explaining the operation of the communication network shown in FIG. 12. FIG.
[Explanation of symbols]
101: Data input section
102: Position detection unit
103 ... Travel route calculation unit
104 ... Map database
105: Vehicle speed calculation unit
106 ... Traffic information acquisition unit
107 ... Radio wave environment database
108 ... management table
109 ... scheduling control unit
110: Memory
111 ... Data transmission / reception unit
112 ... display section
201, 501, 1001, 1005, 1101, 1301 ... travel route
202,502,1002,1102,1302 ... Communicable zone
203, 503, 1003, 1103, 1303 ... Communication impossible zone
204,504,1004,1104,1201,1404 ... Vehicle
601. Antenna
602 ... RF section
603: Signal processing unit
604 Network interface
605 ... Download control unit
702 ... scheduling control unit
703: Memory
704 ... Map database
705 ... Travel route calculation unit
706 ... Radio wave environment database
707 ... Traffic information acquisition unit
1202 ... Communicator
1203 ... In-vehicle device
1204 ... Base station
1205 ... Portal
1206: Internet network
1207: Content server

Claims (8)

In a vehicle information communication apparatus that communicates with a content server outside the vehicle and downloads a plurality of contents from the content server, the throughput of the travel route on which the vehicle on which the vehicle information communication apparatus is mounted, the requested content Based on the data size and the vehicle speed information, the data size of the content that can be downloaded in order from the nearest communicable zone after the download request start point that requested the download of the plurality of contents is calculated. Compare the data size of the contents of the content, and download each position in order from the closest communicable zone after the download request start point , in order of downloading the contents with the data size that is smaller than the calculated data size and the largest data size among the plurality of contents. Possible place A vehicular information communication apparatus comprising a scheduling control unit that performs scheduling control of a download order of a plurality of contents assigned to a band. In a vehicle information communication apparatus that communicates with a content server outside the vehicle and downloads a plurality of contents from the content server, the information communication apparatus is installed in the base station, and the throughput of a travel route on which the vehicle travels Based on the requested data size and vehicle speed information, calculate the data size of the content that can be downloaded in order from the nearest communicable zone after the download request start point that requested the download of multiple content, and calculate the data Compare the data size of the plurality of contents with the data size of the plurality of contents, and the closest communicable zone after the download request start point is the position where the contents are downloaded in order of the contents having the largest data size among the plurality of contents. In order An information communication apparatus for vehicles, comprising a scheduling control unit that assigns to each communicable zone and performs scheduling control of a download order of a plurality of contents. The vehicle speed information is
The vehicle information communication apparatus according to claim 1, further comprising vehicle speed information of another vehicle on the travel route. The vehicle speed information is
The vehicle information communication apparatus according to claim 1, wherein traffic information on a travel route at the time of requesting the plurality of contents is taken into consideration. The scheduling control unit includes:
A function to estimate the download completion time, download completion time, and download location of multiple contents,
3. The vehicle information communication device according to claim 1, wherein the vehicle information communication device mounted on the vehicle has a display unit that displays the download completion time, the download completion time, and the download location. The scheduling control unit includes:
Based on the estimated download completion time, download completion time, and download location of the plurality of contents, the difference between the distance to the destination of the vehicle and the distance to the location where the download of the plurality of contents is completed, and the estimated arrival time And the function to calculate the difference between the time when downloading of multiple contents is completed,
6. The vehicle information communication device according to claim 5, wherein the vehicle information communication device mounted on the vehicle has a display unit that displays a difference between a distance and time calculated by the scheduling control unit. The scheduling control unit includes:
The rescheduling is performed based on a newly set travel route when the vehicle that is downloading content while traveling is out of the set travel route. The vehicle information communication apparatus described. The scheduling control unit includes:
If the vehicle that is downloading content while traveling is in the communicable zone and is below the set speed for a certain period of time, it is determined that the vehicle is in a stopped or slow driving state. 3. The vehicle information communication device according to claim 1 or 2, wherein scheduling control is canceled, and then the rescheduling control is performed when the vehicle resumes traveling.

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