JP2021163226A - Information collection method, information collector device, and content storage device - Google Patents

Abstract

To provide an information collection method capable of efficiently achieving communication that requests content from an unspecified number of content storage devices, and communication that delivers the found content to the information collector while satisfying both characteristics.SOLUTION: A user terminal 1 transmits an interest containing request content data to a camera 3 via a low-speed communication path that constitutes an information-centric network. When the camera receives the interest from the user terminal, the camera searches a content that meets the search conditions described in the request content data included in the interest from the contents stored in own device, and when the relevant content is found, the camera transmits the content to the user terminal via a high-speed communication path that constitutes an IP network different from the low-speed communication path.SELECTED DRAWING: Figure 1

Description

The present invention is an information collection method in which an information collector device collects information stored in a content storage device using an information-oriented network, an information collector device connected to the information-oriented network, and connected to the information-oriented network. It is related to the content storage device.

Currently, IP networks (Internet) are widespread. In this IP network, when the content stored in the device is acquired by the user terminal, the necessary content can be acquired by obtaining the IP address of the device and accessing the device using the IP address. ..

On the other hand, as an alternative technology to such an IP network, an information-centric network (ICN) technology is known. Further, as a technology similar to this information-oriented network, there are CCN (Contents Centric Network) and NDN (Named Data Network). Focusing on the routing (routing control) method, these technologies are also called "attribute routing", "name routing", "information routing", etc., and the content accumulated in the device is used as the attribute of the content. It is constructed so that it can be collected by name.

By the way, in an information-oriented network, it is possible to collect necessary contents from devices in the network by adding a content name containing character information that identifies necessary contents to an interest (message) and transmitting it from a user terminal. can. However, the collected content includes many contents that the user does not want. For this reason, there is a problem that it takes a lot of time and effort to select appropriate contents from the collected contents.

Therefore, when a device that stores image files (contents) such as a camera searches for the image files stored in its own device based on the search conditions specified by the information collector, and finds an image file that matches the search conditions. , A technique is known in which a process of collating the image file with an image file for collation designated by an information collector and selecting an appropriate image file is performed (see Patent Document 1).

Japanese Patent No. 6373437

By the way, in the above-mentioned conventional technique, when the content (image file) requested by the user is found, the content is delivered to the information collector, but in the information-oriented network, the route taken by the interest is reversed. The content is delivered to the information collector by following. That is, the interest and the content pass through the same line.

On the other hand, since the search condition to be added to the interest is only text data, the interest has a small capacity, but the content such as an image file has a large capacity. Here, in an information-oriented network, since the interest and the content pass through the same line, the interest itself may be a low-speed line, but since the content is large in capacity, it is necessary to use a high-speed line for the interest as well. There was a problem of waste.

Further, the content request (interest) is a one-to-N communication that is simultaneously delivered to a large number of content storage devices, but the content is a one-to-one communication that is transmitted from the content storage device to the device of the information collector. That is, it is necessary to construct a system capable of efficiently performing content request and content transmission according to the two incompatible characteristics of one-to-N communication by a low-speed line and one-to-one communication by a high-speed line. Is desired.

Therefore, the present invention efficiently performs communication for requesting content from an unspecified number of content storage devices and communication for delivering the found content to an information collector while achieving both characteristics. The main purpose is to provide an information collection method, an information collector device, and a content storage device that can be used.

The information collection method of the present invention is an information collection method in which an information collector device collects information stored in a content storage device using an information-oriented network, and the information collector device includes request content data. When the interest is transmitted to the content storage device via the low-speed communication path constituting the information-oriented network and the content storage device receives the interest from the information collector device, the interest is included in the interest. The content corresponding to the search conditions described in the request content data is searched from the contents stored in the own device, and when the corresponding content is found, the content is searched for in a high-speed communication path different from the low-speed communication path. The information is transmitted to the information collector device via the above.

Further, the information collector device of the present invention is an information collector device connected to an information-oriented network, and is a content storage device for interest including request content data via a low-speed communication path constituting the information-oriented network. The content found in the search process of searching the content stored in the own device for the content corresponding to the search condition described in the request content data in the transmission unit to be transmitted to the content storage device and the content storage device is performed at the low speed. The configuration includes a receiving unit that receives from the content storage device via a high-speed communication path different from the communication path.

Further, the content storage device of the present invention is a content storage device connected to an information-oriented network, and an interest including request content data from the information collector device is passed through a low-speed communication path constituting the information-oriented network. The receiver that receives the information, the processor that performs the search process to search the content corresponding to the search condition described in the request content data included in the interest from the content stored in the own device, and the search process. The configuration includes a transmission unit that transmits the content found in the above to the information collector device via a high-speed communication path different from the low-speed communication path.

According to the present invention, by using an information-oriented network, it is possible to efficiently request content from an unspecified number of content storage devices. Further, even if the information-oriented network is configured by a low-speed communication path, stable distribution can be performed if the interest contains a small amount of text data. Further, since the content is transmitted via the high-speed communication path, even a large amount of content can be quickly and stably delivered to the information collector device. As a result, it is possible to efficiently perform communication for requesting content from an unspecified number of content storage devices and communication for delivering the found content to an information collector while achieving both characteristics.

Overall configuration diagram of the communication system according to the first embodiment A block diagram showing a schematic configuration of a user terminal 1 and a camera 3 according to the first embodiment. A sequence diagram showing an operation procedure of the communication system according to the first embodiment. Overall configuration diagram of the communication system according to the second embodiment A block diagram showing a schematic configuration of a user terminal 1, a camera 3, and a server 2 according to a second embodiment. A sequence diagram showing an operation procedure of the communication system according to the second embodiment. Overall configuration diagram of the communication system according to the third embodiment A sequence diagram showing an operation procedure of the communication system according to the third embodiment. Overall configuration diagram of the communication system according to the fourth embodiment A sequence diagram showing an operation procedure of the communication system according to the fourth embodiment. Overall configuration diagram of the communication system according to the fifth embodiment A sequence diagram showing an operation procedure of the communication system according to the fifth embodiment. Overall configuration diagram of the communication system according to the sixth embodiment A sequence diagram showing an operation procedure of the communication system according to the sixth embodiment. Overall configuration diagram of the communication system according to the seventh embodiment Overall configuration diagram of the communication system according to the eighth embodiment A sequence diagram showing an operation procedure of the communication system according to the eighth embodiment. Overall configuration diagram of the communication system according to the ninth embodiment A sequence diagram showing an operation procedure of the communication system according to the ninth embodiment. A block diagram showing a schematic configuration of a ferry 41 according to a tenth embodiment. Explanatory drawing which shows the outline of the communication system which concerns on 11th Embodiment Explanatory drawing which shows the outline of the communication system which concerns on 12th Embodiment

The first invention made to solve the above-mentioned problems is an information collecting method in which an information collector device collects information stored in a content storage device by using an information-oriented network, and the information collector device Sends an interest containing request content data to the content storage device via a low-speed communication path constituting the information-oriented network, and the content storage device receives the interest from the information collector device. , The content corresponding to the search condition described in the request content data included in the interest is searched from the contents stored in the own device, and when the corresponding content is found, the content is transmitted to the low-speed communication. The configuration is such that transmission is performed to the information collector device via a high-speed communication path different from the route.

According to this, by using the information-oriented network, it is possible to efficiently request contents from an unspecified number of content storage devices. Further, even if the information-oriented network is configured by a low-speed communication path, stable distribution can be performed if the interest contains a small amount of text data. Further, since the content is transmitted via the high-speed communication path, even a large amount of content can be quickly and stably delivered to the information collector device. As a result, it is possible to efficiently perform communication for requesting content from an unspecified number of content storage devices and communication for delivering the found content to an information collector while achieving both characteristics.

Further, in the second invention, the high-speed communication path constitutes an IP network.

According to this, the content can be efficiently delivered from the content storage device to the information collector device based on the IP address of the information collector device. In this case, the IP address of the information collector device may be added to the interest and transmitted to the content storage device.

Further, in the third invention, the content storage device sends a response message including a notification to the effect that the content has been transmitted and identification information of the content to the information-oriented network, and the low-speed communication path and the low-speed communication path. The relay device connected to both of the high-speed communication paths receives the response message via the low-speed communication path and also receives the content via the high-speed communication path.

According to this, the relay device acts on behalf of the request for the content from the information collector device. Therefore, the information collector device does not need to perform control recognizing that interest transmission and content reception are performed using different communication paths.

Further, in the fourth invention, the content storage device sends a response message including a notification to the effect that the content has been transmitted and identification information of the content to the information-oriented network, and the information collector device. However, when the relay device connected to the high-speed communication path receives the content from the content storage device after receiving the response message, the content is temporarily stored and transmitted from the information collector device. The content is transmitted to the information collector device in response to a request.

According to this, since the content transmitted from the content storage device is temporarily stored in the relay device, it is possible to prevent a large amount of content from being centrally sent to the information collector device.

Further, the fifth invention is configured such that the wireless distribution device connected to the low-speed communication path distributes the interest to the content storage device by long-distance wireless communication.

According to this, the interest can be transferred all at once to the content storage device located in the communication area of the wireless distribution device. Further, since the transfer range of interest can be limited by the communication area of the wireless distribution device, useless transfer of interest can be suppressed.

Further, the sixth invention is configured such that the content storage device transfers the content to a wireless receiving device connected to the high-speed communication path by short-range wireless communication.

According to this, even if there is no wired high-speed communication path or the communication path is interrupted, the content of the content storage device can be delivered to the information collector device.

Further, the seventh invention is configured to transfer the content to another nearby content storage device by short-range wireless communication when the content storage device is located outside the communication area of the wireless reception device. ..

According to this, the content of the content storage device located outside the communication area of the wireless receiving device is transferred to the content storage device located within the communication area of the wireless receiving device, and the wireless receiving device is transmitted via the content storage device. Content can be transferred to.

Further, in the eighth invention, the mobile body receives the content from the content storage device by short-range wireless communication, transports the content, and transmits the content to the station device connected to the high-speed communication path by short-range wireless communication. The content is transferred by communication.

According to this, even if there is no high-speed communication path or the communication path is interrupted, the content of the content storage device can be delivered to the information collector device.

Further, in the ninth invention, the wireless distribution device connected to the low-speed communication path notifies the moving body of the position of the station device, and the moving body moves so as to pass in the vicinity of the station device. The route is changed to transfer the content collected from the content storage device to the station device.

According to this, the content can be reliably delivered from the mobile body to the station device.

Further, according to the tenth invention, when the content storage device finds the corresponding content by the search process, the content storage device transmits a notification requesting content collection to the wireless distribution device connected to the low-speed communication path. The wireless distribution device notifies the moving body of information about the content storage device for which the content collection is requested, and the moving body sets a movement route so as to pass in the vicinity of the content storage device for which the content collection is requested. The configuration is changed to receive the content transferred from the content storage device.

According to this, the content can be reliably delivered to the moving body from the content storage device that stores the content corresponding to the search condition specified by the user.

The eleventh invention is an information collector device connected to an information-oriented network, and transmits interest including request content data to a content storage device via a low-speed communication path constituting the information-oriented network. The content found in the search process of searching the content stored in the own device for the content corresponding to the search condition described in the request content data in the transmission unit and the content storage device is referred to as the low-speed communication path. Is configured to include a receiving unit that receives from the content storage device via a different high-speed communication path.

According to this, as in the first invention, both the communication of requesting content from an unspecified number of content storage devices and the communication of delivering the found content to an information collector are compatible with each other. It can be done efficiently.

The twelfth invention is a content storage device connected to an information-oriented network, and receives interest including request content data from an information collector device via a low-speed communication path constituting the information-oriented network. The receiver, the processor that performs the search process to search the content corresponding to the search condition described in the request content data included in the interest from the contents stored in the own device, and the search process. The configuration includes a transmission unit that transmits the contents to the information collector device via a high-speed communication path different from the low-speed communication path.

According to this, as in the first invention, both the communication of requesting content from an unspecified number of content storage devices and the communication of delivering the found content to an information collector are compatible with each other. It can be done efficiently.

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

(First Embodiment)
FIG. 1 is an overall configuration diagram of a communication system according to the first embodiment.

This communication system collects necessary contents using an information-oriented network (ICN: Information Centric Network), and includes a user terminal 1 (information collector device) and a camera 3 (content storage device). ing.

The user terminal 1 and the camera 3 are connected to each other via an information-oriented network. Further, the user terminal 1 and the camera 3 are connected to each other via an IP network. Further, a router 4 is installed in the information-oriented network and the IP network. In addition to the ones shown in the figure, the router 4 is installed at an appropriate place in the information-oriented network and the IP network.

In the user terminal 1, a user (information collector) performs an operation related to information collection. In this embodiment, an image search is performed as an example of information collection. When the user inputs necessary information, the user terminal 1 generates an interest including text data and sends the interest to the information-oriented network.

Here, the text data (request content data) includes information on the content requested by the user, specifically, information on the shooting point (area) (place name, etc.) as a condition (search condition) for the search process performed by the camera 3. ) And information about the shooting time (period) are described. Further, in the text data, when searching for a specific object, information on the type of search target (person, animal, vehicle, etc.) is described as a search condition. When the search target is a person, information on the attributes of the person (age, gender, clothes, height, etc.) is described in the text data. This text data is generated in response to a user's input operation regarding search conditions and the like.

At this time, when the user designates a specific area as the shooting point, the image file taken by the camera 3 located in the designated area is targeted. Further, when the user specifies a specific time zone as the shooting time, the image file shot by the camera 3 in the designated time zone is targeted. When the user specifies the type and attribute of the search target, the image file in which the object of the specified type and attribute is captured is targeted. For example, if the shooting point is "near XXX town" and the attribute to be searched is "adult male", an image of an adult male taken near XXX town can be searched.

When the camera 3 receives the interest from the user terminal 1, the camera 3 searches the image files (contents) corresponding to the search conditions described in the text data included in the interest from the image files stored in the own device. When the corresponding image file is found, the image file is transmitted to the user terminal 1 of the request source (interest source) via the IP network.

Here, by adding the IP address of the user terminal 1 to the interest transmitted from the user terminal 1 to the information-oriented network, the image file can be transmitted from the camera 3 to the user terminal 1 via the IP network.

Further, in the present embodiment, the interest is transmitted from the user terminal 1 to the camera 3 via the low-speed communication paths (routes # 1, # 1-1, # 1-2) constituting the information-oriented network. Further, the image file is transmitted from the camera 3 to the user terminal 1 via the high-speed communication paths (routes # 2, # 2-1 and # 2-2) constituting the IP network.

In the present embodiment, the high-speed communication path for transmitting the image file constitutes the IP network, but the high-speed communication path for transmitting the image file may constitute the information-oriented network. In this case, the image file may be delivered to the user terminal 1 by designating the router 4 on the high-speed communication path from the camera 3 to the user terminal 1.

Further, in the present embodiment, an example in which the user terminal 1 (information collector device) collects image data taken by the camera 3 as content has been described, but the content to be collected is not limited to the image data. For example, voice data picked up by a microphone or state information (temperature, humidity, etc.) detected by various sensors may be used.

Further, in the present embodiment, an example in which the camera 3 as the content storage device is connected to the information-oriented network will be described, but the content storage device is not limited to the camera 3. In an information-oriented network, since connected devices share content, not only devices other than the camera 3, for example, sensing devices such as temperature / humidity sensors and microphones, but also servers and routers function as content storage devices.

Next, a schematic configuration of the user terminal 1 and the camera 3 according to the first embodiment will be described. FIG. 2 is a block diagram showing a schematic configuration of the user terminal 1 and the camera 3.

The user terminal 1 includes a communication unit 11, an input unit 12, a display unit 13, a memory 14, and a processor 15.

The communication unit 11 sends an interest (request message) to the information-oriented network. Further, the communication unit 11 receives an image file transmitted from the camera 3 via the IP network as an interest response.

In the input unit 12, the user (information collector) performs an input operation for designating search conditions. The display unit 13 displays an input screen for designating search conditions and information received by the communication unit 11.

The memory 14 stores a program or the like executed by the processor 15.

The processor 15 executes various processes related to information collection by executing a program stored in the memory 14. In the present embodiment, the processor 15 performs interest transmission processing, received data processing, and the like.

In the interest transmission process, the processor 15 acquires text data related to the search condition input by the user, generates an interest including the text data, and controls the communication unit 11 so as to send the interest to the information-oriented network. do.

In the received data processing, the processor 15 performs processing such as displaying data received from the information-oriented network by the communication unit 11, for example, an image file from the camera 3 on the display unit 13.

The camera 3 includes a photographing unit 31, a communication unit 32 (reception unit, transmission unit), a memory 33, and a processor 34.

The photographing unit 31 photographs the periphery of the camera 3 and outputs captured image data. The captured image data (still image, moving image) is stored in an image file by the processor 34.

The communication unit 32 receives the interest (request message) transmitted from the information-oriented network. Further, the communication unit 32 transmits an image file (content) to the user terminal 1 via the IP network.

The memory 33 stores a program or the like executed by the processor 34. Further, the memory 33 stores the image file generated by the processor 34.

The processor 34 performs various processes related to information collection by executing the program stored in the memory 33. In this embodiment, the processor 34 performs image search processing and the like.

In the image search process, when the communication unit 32 receives the interest from the user terminal 1, the processor 34 stores the image file corresponding to the search condition described in the text data included in the interest in the own device. Search from. Specifically, if the text data includes the position information of the shooting point (area) and the time information of the shooting time (period) as search conditions, the shooting point (area) and the shooting time (period) will be used. The corresponding image file is searched. Further, when the type and attribute of the search target are described in the text data as a search condition, an image file in which an object corresponding to the type and attribute is captured is searched.

The processor 34 can perform image recognition processing on the captured image of the photographing unit 31, and by this image recognition processing, the type (person, animal, vehicle, etc.) and attribute (subject is a person) of the subject reflected in the captured image. In the case, for example, age, gender, clothes, height, etc.) are acquired.

Next, the operation procedure of the communication system according to the first embodiment will be described. FIG. 3 is a sequence diagram showing an operation procedure of the communication system.

First, the user terminal 1 sends an interest including text data (request content data) in which search conditions are described to an information-oriented network.

Next, when the camera 3 receives the interest from the user terminal 1, it searches for an image file corresponding to the search condition described in the text data included in the interest from the image files stored in the own device ( Search process). Then, the camera 3 transmits the image file found by the image search to the user terminal 1 via the IP network.

(Second Embodiment)
Next, the second embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 4 is an overall configuration diagram of the communication system according to the second embodiment.

In the present embodiment, similarly to the first embodiment (see FIG. 1), the user terminal 1 transmits the interest to the camera 3 via the information-oriented network (low-speed communication route).

On the other hand, in this embodiment, the server 2 (relay device) is provided. The server 2 is interposed between the user terminal 1 and the camera 3. The server 2 transfers the interest from the user terminal 1 to the camera 3 via the information-oriented network. The camera 3 transmits an image file to the server 2 via an IP network (high-speed communication route).

Further, in the present embodiment, the camera 3 sends a response message as a reply to the interest to the information-oriented network. This response message is received by the server 2. The response message includes a notification that the image file (content) has been transmitted and identification information of the image file.

Here, the identification information of the image file is specifically a file name given to the image file. For example, the file name "GZA-20190624-9s3fd" is added to the response message. The file name should have a certain length so that it does not match other file names as much as possible, or include time and random numbers (including random alphabets and symbols, not limited to numbers). Is desirable.

When the server 2 receives the response message from the camera 3 via the information-oriented network and receives the image file from the camera 3 via the IP network, the server 2 sends the image file to the user terminal 1 as a reply to the interest from the user terminal 1. Send to.

As described above, in the present embodiment, the server 2 performs the request for the image file from the user terminal 1 on behalf of the user terminal 1. Therefore, in the user terminal 1, it is not necessary to perform control recognizing that interest transmission and image file reception are performed using different networks.

Since the server 2 can recognize that the reply to the interest from the user terminal 1 has been made by receiving the image file (content) via the IP network, the response message is transmitted by the information-oriented network. You may not have it.

Next, a schematic configuration of the user terminal 1, the camera 3, and the server 2 according to the second embodiment will be described. FIG. 5 is a block diagram showing a schematic configuration of a user terminal 1, a camera 3, and a server 2.

The configuration of the user terminal 1 is substantially the same as that of the first embodiment (see FIG. 2).

The configuration of the camera 3 is substantially the same as that of the first embodiment, but the processor 34 performs response message transmission processing and the like in addition to the search processing.

In the response message transmission process, the processor 34 sends a response message including a notification that the image file (content) has been transmitted and the file name (content identification information) of the image file to the information-oriented network. Controls the communication unit 32.

The server 2 includes a communication unit 21 (reception unit, transmission unit), a memory 22, and a processor 23.

The communication unit 21 sends and receives interest (request message) and response message to and from the information-oriented network. Further, the communication unit 21 transmits / receives an image file (content) via the IP network.

The memory 22 stores a program or the like executed by the processor 23.

The processor 23 performs various processes related to information collection by executing the program stored in the memory 22. In the present embodiment, the processor 23 performs interest transfer processing, received data transfer processing, and the like.

In the interest transfer process, when the processor 23 receives the interest from the user terminal 1 by the communication unit 21, the communication unit 21 is controlled so as to transfer the interest to a lower node (such as a router on the camera 3 side) of the information-oriented network. do.

In the received data transfer process, when the processor 23 receives the image file (content) transmitted from the camera 3 via the IP network by the communication unit 21, the communication unit 21 transfers the image file to the user terminal 1. To control.

Next, the operation procedure of the communication system according to the second embodiment will be described. FIG. 6 is a sequence diagram showing an operation procedure of the communication system.

First, the user terminal 1 sends an interest including text data (request content data) in which search conditions are described to the server 2, and the server 2 sends the interest to the information-oriented network.

Next, when the camera 3 receives the interest from the user terminal 1, it searches for an image file corresponding to the search condition described in the text data included in the interest from the image files stored in the own device ( Image search).

Next, the camera 3 transmits the image file found by the image search to the server 2 via the IP network. Further, the camera 3 transmits a response message including the file name of the image file transmitted to the server 2 to the server 2 via the information-oriented network.

Next, when the server 2 receives the image file from the camera 3, the server 2 stores the image file in its own device. Then, when the server 2 receives the response message from the camera 3, the server 2 transmits the image file to the user terminal 1.

(Third Embodiment)
Next, the third embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 7 is an overall configuration diagram of the communication system according to the third embodiment.

In the present embodiment, similarly to the first embodiment (see FIG. 1), the user terminal 1 transmits the interest to the camera 3 via the information-oriented network (low-speed communication route). Further, in the present embodiment, as in the second embodiment, the camera 3 transmits the image file to the server 2 via the IP network (high-speed communication route).

Further, in the present embodiment, similarly to the second embodiment (see FIG. 4), the camera 3 sends a response message as a reply to the interest to the information-oriented network. However, in the second embodiment, the response message is received by the server 2, whereas in the present embodiment, the response message is received by the user terminal 1.

When the server 2 receives the image file from the camera 3, the server 2 temporarily stores the image file in its own device. Then, the server 2 transmits the image file to the user terminal 1 in response to the transmission request from the user terminal 1.

By receiving the response message from the camera 3, the user terminal 1 has transmitted the image file (content) requested by its own device for interest by another route, and the file name of the image file (content identification information). ) And can be recognized. Then, the user terminal 1 accesses the server 2 in response to the user's operation or at an appropriate timing, for example, at a timing when a predetermined time has elapsed after transmitting the interest, and the file name notified by the response message. The image file of is acquired from the server 2.

As described above, in the present embodiment, since the image files transmitted from the camera 3 are temporarily stored in the server 2, it is possible to prevent a large number of image files from being centrally sent to the user terminal 1.

Next, the operation procedure of the communication system according to the third embodiment will be described. FIG. 8 is a sequence diagram showing an operation procedure of the communication system.

First, the user terminal 1 sends an interest including text data (request content data) in which search conditions are described to an information-oriented network.

Next, when the camera 3 receives the interest from the user terminal 1, it searches for an image file corresponding to the search condition described in the text data included in the interest from the image files stored in the own device ( Image search).

Next, the camera 3 transmits the image file found by the image search to the server 2 via the IP network. Further, the camera 3 transmits a response message including the file name of the image file transmitted to the server 2 to the user terminal 1 via the information-oriented network.

Next, when the server 2 receives the image file from the camera 3, the server 2 stores the image file in its own device.

When the user terminal 1 receives the response message from the camera 3, it accesses the server 2 and instructs the server 2 to send the corresponding image file based on the file name of the image file notified from the camera 3. And get the image file.

(Fourth Embodiment)
Next, the fourth embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 9 is an overall configuration diagram of the communication system according to the fourth embodiment.

In the present embodiment, similarly to the first embodiment (see FIG. 1), the user terminal 1 transmits an interest to the camera 3 via the information-oriented network (low-speed communication route), and the camera 3 uses the IP network (see FIG. 1). The image file is transmitted to the user terminal 1 via the high-speed communication route).

On the other hand, in the present embodiment, the interest is transferred to the camera 3 using the wireless line. Specifically, a gateway 7 (wireless distribution device) that serves as a base station for long-range wireless communication, especially LPWA (Low Power Wide Area) communication, is installed on a low-speed communication route that transmits interest. , Interest is transferred from the gateway 7 to the camera 3 by LPWA communication.

The gateway 7 broadcasts the interest by LPWA communication. That is, the interest is notified to the camera 3 by the broadcast communication.

As a result, the interest can be transferred to the cameras 3 located in the communication area of the gateway 7 all at once. Further, the transfer range of interest can be limited by the communication area of the gateway 7. That is, the interest can be transferred only to the cameras 3 that exist in a limited range. Therefore, it is possible to prevent the interest from being transferred to the camera 3 which exists in a wider range than necessary.

The configurations of the user terminal 1 and the camera 3 are substantially the same as those of the first embodiment (see FIG. 2), but the camera 3 includes a communication unit for performing LPWA communication in addition to the communication unit 32.

Next, the operation procedure of the communication system according to the fourth embodiment will be described. FIG. 10 is a sequence diagram showing an operation procedure of the communication system.

First, the user terminal 1 sends an interest including text data (request content data) in which search conditions are described to an information-oriented network. Next, when the gateway 7 receives the interest from the user terminal 1, the interest is broadcast by LPWA communication to a plurality of cameras 3 in the communication area of the gateway 7.

Next, when the camera 3 receives the interest from the gateway 7, it searches for an image file corresponding to the search condition described in the text data included in the interest from the image files stored in the own device (image). search).

Next, the camera 3 transmits the image file found by the image search to the user terminal 1 via the IP network. In the example shown in FIG. 10, since the two cameras 3 (camera # 1 and camera # 4) find an image file corresponding to the search condition by the image search, the image file is transmitted to the user terminal 1. On the other hand, the other two cameras 3 (camera # 2, camera # 3) do not transmit the image file because they did not find the image file corresponding to the search condition in the image search.

(Fifth Embodiment)
Next, the fifth embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 11 is an overall configuration diagram of the communication system according to the fifth embodiment.

In the present embodiment, the interest is transmitted from the gateway 7 to the camera 3 by LPWA communication as in the fourth embodiment (see FIG. 9).

On the other hand, in the present embodiment, a relatively high-speed short-range wireless communication, specifically, an access point 8 (wireless distribution device) that performs WLAN communication such as WiFi (registered trademark) is used as a high-speed communication route for transmitting an image file. It is installed, and the image file is transferred from the camera 3 to the access point 8 by WLAN communication.

Further, since the communication area (radio wave range) of WiFi (registered trademark) is smaller than the communication area of LPWA, one access point 8 receives image files transmitted from all cameras 3 in the communication area of LPWA. You may not be able to do it.

Therefore, in the present embodiment, an image file is transferred between a plurality of peripheral cameras 3 by multi-hop communication. That is, the image files are sequentially transferred from the camera 3 to the surrounding cameras 3, so that the image files of the camera 3 located outside the communication area of the access point 8 are moved to the camera 3 located within the communication area of the access point 8. It is transferred to the access point 8 via. In the example of FIG. 11, for example, the image file of the camera # 4 is transferred to the access point 8 via the camera # 3 and the camera # 2.

Next, the operation procedure of the communication system according to the fifth embodiment will be described. FIG. 12 is a sequence diagram showing an operation procedure of the communication system.

First, the user terminal 1 sends an interest including text data (request content data) in which search conditions are described to an information-oriented network. Next, when the gateway 7 receives the interest from the user terminal 1, the interest is broadcast by LPWA communication to a plurality of cameras 3 in the communication area of the gateway 7.

Next, when the camera 3 receives the interest from the gateway 7, it searches for an image file corresponding to the search condition described in the text data included in the interest from the image files stored in the own device (image). search).

Next, when the camera 3 holding the image file corresponding to the search condition is located in the communication area of the access point 8, the image file is transferred to the access point 8 by WLAN communication.

When the camera 3 holding the image file corresponding to the search condition is located outside the communication area of the access point 8, the image file is transferred to the surrounding cameras 3 by multi-hop communication. Then, when the camera 3 located in the communication area of the access point 8 receives the image file from the camera 3 located outside the communication area of the access point 8, the image file is transferred to the access point 8. In the example of FIG. 12, the image file of the camera # 4 is transferred to the access point 8 via the camera # 3 and the camera # 2 by the multi-hop communication between the plurality of cameras 3 as in the case of FIG.

Next, when the access point 8 receives the image file from the camera 3, the access point 8 transmits the image file to the user terminal 1 via the IP network.

(Sixth Embodiment)
Next, the sixth embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 13 is an overall configuration diagram of the communication system according to the sixth embodiment.

In the present embodiment, similarly to the fourth embodiment (see FIG. 9), the interest is broadcasted from the gateway 7 to the camera 3 by LPWA communication.

On the other hand, in the present embodiment, by using a moving object such as a vehicle or a pedestrian as a ferry 41 that carries an image file by the message ferry method, the image file accumulated by the camera 3 is transmitted from the camera 3 to the ferry 41 via the ferry 41. Will be transferred. The ferry 41 accumulates the image file transferred from the camera 3.

Further, a station 9 (station device) is installed on the high-speed communication route (route # 2) of the IP network. The ferry 41 first stops at the camera 3 to transfer the image file from the camera 3 to the ferry 41. Then, when the ferry 41 stops at the station 9, the image file collected from the camera 3 is transferred from the ferry 41 to the station 9. In the example of FIG. 13, since the two cameras 3 (camera # 1 and camera # 4) find an image file corresponding to the search condition by the image search, the image file is transferred to the ferry 41. On the other hand, the other two cameras 3 (camera # 2, camera # 3) do not transfer the image file because the image file corresponding to the search condition was not found by the image search.

As described above, in the present embodiment, since the image file corresponding to the search condition of the image search is transferred from the camera 3 by the message ferry method, the image of the camera 3 is transferred even if the high-speed communication route of the IP network is only halfway. The file can be delivered to the user terminal 1.

When the vehicle becomes the ferry 41, specifically, the in-vehicle terminal mounted on the vehicle operates the ferry 41. This in-vehicle terminal has the functions of LPWA communication, information-oriented network communication, and IP network communication.

Further, in the present embodiment, the transfer of the image file from the camera 3 to the ferry 41 and the transfer of the image file from the ferry 41 to the station 9 are performed by wired communication. Therefore, the ferry 41 and the camera 3 are connected by a communication terminal, and the station 9 and the ferry 41 are connected by a communication terminal. At this time, for example, when a charger is installed in the station 9, the charger and the electric vehicle are docked, and the electric power for charging is transmitted from the charger to the electric vehicle, the image file is transferred from the ferry 41 to the station 9. It may be done.

Next, the operation procedure of the communication system according to the sixth embodiment will be described. FIG. 14 is a sequence diagram showing an operation procedure of the communication system.

First, the user terminal 1 sends an interest including text data (request content data) in which search conditions are described to an information-oriented network. Next, when the gateway 7 receives the interest from the user terminal 1, the interest is broadcast by LPWA communication to a plurality of cameras 3 in the communication area of the gateway 7.

Next, when the camera 3 receives the interest from the gateway 7, it searches for an image file corresponding to the search condition described in the text data included in the interest from the image files stored in the own device (image). search).

Next, when the ferry 41 approaches the camera 3 holding the image file corresponding to the search condition, the camera 3 transfers the image file corresponding to the search condition found by the image search to the ferry 41.

Next, when the ferry 41 approaches the station 9, the ferry 41 transfers the image file collected from the camera 3 to the station 9.

Next, when the station 9 receives the image file from the ferry 41, the station 9 transmits the image file to the user terminal 1 via the IP network.

(7th Embodiment)
Next, the seventh embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 15 is an overall configuration diagram of the communication system according to the seventh embodiment. The operation procedure of the communication system according to the present embodiment is the same as that of the sixth embodiment (see FIG. 14).

In the present embodiment, as in the sixth embodiment (see FIG. 13), interest is broadcast from the gateway 7 to a plurality of cameras 3 in the communication area of the gateway 7 by LPWA communication. Further, the camera 3 transfers the image file to the ferry 41. Then, the ferry 41 transfers the image file to the station 9.

On the other hand, in the present embodiment, the transfer of the image file from the camera 3 to the ferry 41 and the transfer of the image file from the ferry 41 to the station 9 are performed by short-range wireless communication such as WLAN communication. In the example of FIG. 15, since the two cameras 3 (camera # 1 and camera # 4) find an image file corresponding to the search condition by the image search, the image file is transferred to the ferry 41. On the other hand, the other two cameras 3 (camera # 2, camera # 3) do not transfer the image file because the image file corresponding to the search condition was not found by the image search.

As a result, when transferring the image file from the ferry 41 to the station 9, the ferry 41 does not have to stop at the station 9 and only needs to pass in the vicinity thereof. Further, when transferring an image file from the camera 3 to the ferry 41, the ferry 41 only needs to pass in the vicinity of the camera 3.

In the present embodiment, the transfer of the image file from the camera 3 to the ferry 41 and the transfer of the image file from the ferry 41 to the station 9 are performed by short-range wireless communication such as WLAN communication. Is not limited to WLAN communication. For example, the image file may be transferred using infrared communication, Bluetooth (registered trademark), millimeter wave communication, or the like. Further, the operation procedure of the communication system according to the present embodiment is the sixth embodiment except that the transfer means from the camera 3 to the ferry 41 and the transfer means from the ferry 41 to the station 9 are short-range radio. It is the same as FIG. 14).

(8th Embodiment)
Next, the eighth embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 16 is an overall configuration diagram of the communication system according to the eighth embodiment.

In the present embodiment, similarly to the seventh embodiment (see FIG. 15), interest is broadcast from the gateway 7 to a plurality of cameras 3 in the communication area of the gateway 7 by LPWA communication. Further, the camera 3 transfers the image file corresponding to the search condition found by the image search to the ferry 41 by short-range wireless communication such as WLAN communication.

On the other hand, in the present embodiment, the gateway 7 informs the ferry 41 of the position of the station 9 by LPWA communication. Then, the ferry 41 changes the planned route to a route that passes around the station 9 so that the image file collected from the camera 3 can be transferred to the station 9.

As described above, in the present embodiment, since the ferry 41 changes the route so as to pass around the station 9, the image file collected from the camera 3 can be reliably transferred from the ferry 41 to the station 9.

In the present embodiment, since the route of the ferry 41 (moving body) is changed, the cooperation of the person who controls the ferry 41, for example, when the ferry 41 is a vehicle, the cooperation of the driver is required. Therefore, in order to promote the cooperation of the person who controls the ferry 41, an incentive (card points, discount coupon, etc.) may be given when the person cooperates in changing the route.

When a plurality of stations 9 exist in the vicinity of the ferry 41, the gateway 7 notifies the ferry 41 of the positions of the plurality of stations 9, and the ferry 41 is optimal based on its own planned route. Station 9 may be selected.

Next, the operation procedure of the communication system according to the eighth embodiment will be described. FIG. 17 is a sequence diagram showing an operation procedure of the communication system.

First, the user terminal 1 sends an interest including text data (request content data) in which search conditions are described to an information-oriented network. Next, when the gateway 7 receives the interest from the user terminal 1, the interest is broadcast by LPWA communication to a plurality of cameras 3 in the communication area of the gateway 7.

Next, when the camera 3 receives the interest from the gateway 7, it searches for an image file corresponding to the search condition described in the text data included in the interest from the image files stored in the own device (image). search).

Further, the gateway 7 transmits a device position notification (interest) including the position information of the station 9 to the ferry 41 by LPWA communication.

Next, when the ferry 41 receives the device position notification from the gateway 7, the movement route of the own device is set to the station 9 based on the information included in the device position notification, specifically, the position information of the station 9. Change to a route that passes in the vicinity of (route change).

Next, when the ferry 41 approaches the camera 3 holding the image file corresponding to the search condition, the camera 3 transfers the image file corresponding to the search condition to the ferry 41 by short-range wireless communication (WLAN communication or the like). .. In the example of FIG. 17, since the two cameras 3 (camera # 1 and camera # 4) find an image file corresponding to the search condition by the image search, the image file is transferred to the ferry 41. On the other hand, the other two cameras 3 (camera # 2, camera # 3) do not transfer the image file because the image file corresponding to the search condition was not found by the image search.

Next, when the ferry 41 approaches the station 9, the ferry 41 transfers the image file collected from the camera 3 to the station 9 by short-range wireless communication.

Next, when the station 9 receives the image file from the ferry 41, the station 9 transmits the image file to the user terminal 1 via the IP network.

(9th Embodiment)
Next, the ninth embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 18 is an overall configuration diagram of the communication system according to the ninth embodiment.

In the present embodiment, similarly to the seventh embodiment (see FIG. 15), interest is broadcast from the gateway 7 to a plurality of cameras 3 in the communication area of the gateway 7 by LPWA communication. Next, the camera 3 searches for the image file stored in the own device based on the text data (request content data) included in the interest. Then, the camera 3 transfers the corresponding image file to the ferry 41 by short-range wireless communication (WLAN communication or the like).

On the other hand, in the present embodiment, when the camera 3 accumulates an image file corresponding to the search condition specified by the user (information collector), the camera 3 notifies the gateway 7 to that effect. Then, the gateway 7 notifies the ferry 41 of the position information of the camera 3 that stores the image files corresponding to the search conditions. Then, the camera that stores the image file that corresponds to the search condition from the planned route so that the ferry 41 can receive the image file from the camera 3 that stores the image file that corresponds to the search condition by short-range wireless communication. Change to a route that passes around 3.

As described above, in the present embodiment, the ferry 41 changes the route so as to pass around the camera 3 that stores the image files corresponding to the search conditions, so that the image files are reliably transferred from the camera 3 to the ferry 41. be able to.

In addition to notifying one ferry 41 of the position of the camera 3 that stores the image files corresponding to the search conditions so that the ferry 41 passes around all the target cameras 3. , The position of the camera 3 that stores the image files corresponding to the search conditions may be notified to the plurality of ferries 41. In this case, one ferry 41 may select some cameras 3 that can pass around the area based on its own movement route, and request another ferry 41 for the remaining cameras 3. good.

Further, in the present embodiment, the gateway 7 notifies the ferry 41 of the position of the camera 3 that stores the image files that meet the search conditions, and the ferry 41 surrounds the camera 3 that stores the image files that meet the search conditions. However, in combination with the eighth embodiment, the position of the station 9 as well as the position of the camera 3 is notified from the gateway 7 to the ferry 41, and the area around the camera 3 that stores the image files corresponding to the search conditions is stored. The ferry 41 may pass around the station 9.

Further, in the present embodiment, as in the eighth embodiment, in order to change the route of the ferry 41 (moving body), in order to promote the cooperation of the person who controls the ferry 41, when cooperating with the change of the route, Incentives (card points, discount coupons, etc.) may be awarded.

Next, the operation procedure of the communication system according to the ninth embodiment will be described. FIG. 19 is a sequence diagram showing an operation procedure of the communication system.

First, the user terminal 1 sends an interest including text data (request content data) in which search conditions are described to an information-oriented network. Next, when the gateway 7 receives the interest from the user terminal 1, the interest is broadcast by LPWA communication to a plurality of cameras 3 in the communication area of the gateway 7.

Next, when the camera 3 receives the interest from the gateway 7, it searches for an image file corresponding to the search condition described in the text data included in the interest from the image files stored in the own device (image). search). Then, when an image file corresponding to the search condition is found, a notification (image collection request) to request the collection of the image file corresponding to the search condition (content collection) is transmitted to the gateway 7. In the example shown in FIG. 19, since the two cameras 3 (camera # 1 and camera # 4) have found the image file corresponding to the search condition by the image search, the image collection request is transmitted to the gateway 7. On the other hand, the other two cameras 3 (camera # 2, camera # 3) do not send the image collection request to the gateway 7 because the image file corresponding to the search condition was not found in the image search.

Next, when the gateway 7 receives the image collection request from the camera 3, the image is collected based on the information included in the image collection request, specifically, the identification information of the camera 3 that is the sender of the image collection request. A device position notification (interest) including the position information of the camera 3 that is the sender of the request is transmitted to the ferry 41 by LPWA communication.

Next, when the ferry 41 receives the device position notification from the gateway 7, it is based on the information included in the device position notification, specifically, the position information of the camera 3 that holds the image file corresponding to the search condition. , The movement route of the own device is changed to a route that passes near the camera 3 that holds the image file corresponding to the search condition (route change).

Next, when the ferry 41 approaches the camera 3 holding the image file corresponding to the search condition, the camera 3 transfers the image file corresponding to the search condition to the ferry 41 by short-range wireless communication (WLAN communication or the like). ..

Next, when the ferry 41 approaches the station 9, the ferry 41 transfers the image file collected from the camera 3 to the station 9 by short-range wireless communication.

Next, when the station 9 receives the image file from the ferry 41, the station 9 transmits the image file to the user terminal 1 via the IP network.

(10th Embodiment)
Next, the tenth embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 20 is a block diagram showing a schematic configuration of the ferry 41 according to the tenth embodiment.

In the present embodiment, as in the seventh embodiment (see FIG. 15), the image file of the camera 3 is transferred by the message ferry method using the ferry 41 (mobile body).

The ferry 41 includes a first communication unit 51, a second communication unit 52, a third communication unit 53, a memory 54, and a processor 55.

The first communication unit 51 performs WLAN communication with the station 9, specifically, short-range wireless communication such as WiFi (registered trademark) and WiGig (registered trademark). The first communication unit 51 transmits an image file to the station 9.

The second communication unit 52 performs LPWA communication with the gateway 7. The second communication unit 52 receives the interest from the gateway 7. When the gateway 7 notifies the ferry 41 of the position information of the camera 3 that stores the image files corresponding to the search conditions as in the ninth embodiment, the ferry 41 passes through the communication area of the gateway 7. At that time, the position information of the camera 3 is transmitted from the gateway 7 to the ferry 41.

The third communication unit 53 performs WLAN communication with the camera 3, specifically, short-range wireless communication such as WiFi (registered trademark) and WiGig (registered trademark). The third communication unit 53 receives the image file from the camera 3.

When both the communication with the station 9 and the communication with the camera 3 are WLAN communication, the communication with the station 9 and the communication with the camera 3 are omitted by omitting the third communication unit 53. The first communication unit 51 may be shared for both communications. In addition to this, if any of the first communication unit 51, the second communication unit 52, and the third communication unit 53 adopts the same communication method, those adopting the same communication method are used. It is also possible to have a configuration in which one communication unit is shared.

The memory 54 stores a program or the like executed by the processor 55. In addition, the memory 54 stores the image files collected from the camera 3.

The processor 55 executes various processes related to the image file transfer by executing the program stored in the memory 54.

When the vehicle becomes the ferry 41, specifically, the in-vehicle terminal mounted on the vehicle operates the ferry 41. When the pedestrian becomes the ferry 41, specifically, a mobile information terminal (for example, a smartphone) possessed by the pedestrian operates the ferry 41. Further, when the bicycle becomes the ferry 41, specifically, the mobile information terminal possessed by the bicycle driver or the in-vehicle terminal mounted on the bicycle operates the ferry 41. Mobile information terminals and in-vehicle terminals have the function of an information-oriented network. In addition, such mobiles such as vehicles and pedestrians that become the ferry 41 cooperate with mobiles that regularly pass through the target area, such as trucks of delivery companies and members of local government patrols. You may ask for it.

Further, the communication between the mobile body serving as the ferry 41 and the camera 3 may be short-range wireless communication such as WLAN communication, but when the mobile information terminal (for example, a smartphone) has a cellular communication function. The image file may be transferred by cellular communication.

(11th Embodiment)
Next, the eleventh embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 21 is an explanatory diagram showing an outline of the communication system according to the eleventh embodiment.

In this embodiment, multi-hop communication is performed by a plurality of cameras 3. The camera 3 functions as a repeater, and the image files are sequentially transferred to the adjacent camera 3. As a result, the image files are transferred from the plurality of cameras 3 to the ferry 41.

Further, in the present embodiment, the camera 3 constitutes a mesh network. That is, by connecting the plurality of cameras 3 to each other, the plurality of cameras 3 form a mesh-like transmission path as a repeater. As a result, image files can be collected from a plurality of cameras 3 existing within a required range.

In the example shown in FIG. 21, the image file of one camera 3 (# 1) is transferred from the camera 3 (# 1) to the ferry 41. Further, since the image files of another camera 3 (# 2 to # 7) are transferred to the adjacent cameras 3 (# 2 to # 7) in order and collected by the camera 3 (# 1), the camera 3 (# 1) The image files of # 2 to # 7) are also transferred from the camera 3 (# 1) to the ferry 41. As a result, the image files of all the cameras 3 constituting the mesh network are transferred to the ferry 41. The camera 3 that can be transferred to the ferry 41 may dynamically set the camera 3 that aggregates the image files by distributing the information to the other cameras 3 via the mesh network.

(12th Embodiment)
Next, the twelfth embodiment will be described. It should be noted that the points not particularly mentioned here are the same as those in the above-described embodiment. FIG. 22 is an explanatory diagram showing an outline of the communication system according to the twelfth embodiment.

In this embodiment, a plurality of types of ferries 41, 42, 43 are used.

In the example shown in FIG. 22, when the ferries 41, 42, and 43 receive the image file from the camera 3 and it is difficult for the ferry 41, 42, 43 to deliver the image file to the station 9 as it is (for example, the destination is different or goes). Transfer the image file to another ferry 41, 42, 43 that passed by (for example, if it takes a long time). Then, the ferries 41, 42, 43 passing around the station 9 transfer the image file to the station 9.

In the example of FIG. 22, specifically, the image file is transferred from the camera 3 (# 1) to the vehicle serving as the ferry 41. Next, the image file is transferred from the vehicle that becomes the ferry 41 to the pedestrian that becomes the ferry 42. Next, the image file is transferred from the camera 3 (# 2) to the pedestrian who becomes the ferry 42. Next, the image file is transferred from the pedestrian who becomes the ferry 42 to the bicycle which becomes the ferry 43. Then, the image file is transferred from the bicycle that becomes the ferry 43 to the station 9.

As described above, in the present embodiment, since a plurality of ferries 41, 42, 43 are used and a plurality of types of ferries 41, 42, 43 are used, image files are collected from the cameras 3 existing in a wide range. Therefore, the image file can be reliably transferred to the station 9.

As described above, embodiments have been described as examples of the techniques disclosed in this application. However, the technique in the present disclosure is not limited to this, and can be applied to embodiments in which changes, replacements, additions, omissions, etc. have been made. It is also possible to combine the components described in the above embodiments to form a new embodiment.

The information collection method, the information collector device, and the content storage device according to the present invention include communication for requesting content from an unspecified number of content storage devices and communication for delivering the found content to the information collector. This is an information collection method and information-oriented network in which the information collector device collects the information stored in the content storage device using the information-oriented network, which has the effect of being able to efficiently perform the above. It is useful as an information collector device connected to, a content storage device connected to an information-oriented network, and the like.

1 User terminal (information collector device)
2 server (relay device)
3 Camera (content storage device)
4 Router 7 Gateway (wireless distribution device)
8 Access point (wireless receiver)
9 stations (station equipment)
11 Communication unit (receiver, transmitter)
12 Input unit 13 Display unit 14 Memory 15 Processor 31 Imaging unit 32 Communication unit (receiver, transmitter)
33 Memory 34 Processor 41, 42, 43 Ferry (mobile)

Claims (12)

This is an information collection method in which an information collector device collects information stored in a content storage device using an information-oriented network.
The information collector device
The interest including the request content data is transmitted to the content storage device via the low-speed communication path constituting the information-oriented network.
The content storage device
When the interest is received from the information collector device, the content corresponding to the search condition described in the request content data included in the interest is searched from the contents stored in the own device, and the content is applicable. An information collecting method characterized in that when content is found, the content is transmitted to the information collector device via a high-speed communication path different from the low-speed communication path. The information collecting method according to claim 1, wherein the high-speed communication path constitutes an IP network. The content storage device
A response message including the notification that the content has been transmitted and the identification information of the content is sent to the information-oriented network.
The relay device connected to both the low-speed communication path and the high-speed communication path
The information collecting method according to claim 1, wherein the response message via the low-speed communication path is received and the content via the high-speed communication path is received. The content storage device
A response message including the notification that the content has been transmitted and the identification information of the content is sent to the information-oriented network.
The information collector device
Upon receiving the response message,
The relay device connected to the high-speed communication path
When the content is received from the content storage device, the content is temporarily stored, and the content is transmitted to the information collector device in response to a transmission request from the information collector device. The information collecting method according to claim 1. The wireless distribution device connected to the low-speed communication path
The information collecting method according to claim 1, wherein the interest is delivered to the content storage device by long-distance wireless communication. The content storage device is
The information collecting method according to claim 1, wherein the content is transferred to a wireless receiving device connected to the high-speed communication path by short-range wireless communication. The content storage device is
The information collecting method according to claim 6, wherein when the content is located outside the communication area of the wireless receiving device, the content is transferred to another nearby content storage device by short-range wireless communication. The moving body
The content is received from the content storage device by short-range wireless communication, the content is transported, and the content is transferred to a station device connected to the high-speed communication path by short-range wireless communication. The information collecting method according to claim 1. The wireless distribution device connected to the low-speed communication path
Notify the moving body of the position of the station device and
The moving body is
The information collecting method according to claim 8, wherein the movement route is changed so as to pass in the vicinity of the station device, and the content collected from the content storage device is transferred to the station device. The content storage device is
When the corresponding content is found by the search process, a notification requesting content collection is transmitted to the wireless distribution device connected to the low-speed communication path.
The wireless distribution device
Notifying the mobile body of information about the content storage device that requested the content collection,
The moving body is
The information collection according to claim 8, wherein the movement route is changed so as to pass in the vicinity of the content storage device for which the content collection is requested, and the content transferred from the content storage device is received. Method. An information collector device connected to an information-oriented network.
A transmitter that transmits interest containing request content data to a content storage device via a low-speed communication path that constitutes an information-centric network.
In the content storage device, the content found in the search process for searching the content corresponding to the search condition described in the request content data from the content stored in the own device is subjected to high-speed communication different from the low-speed communication path. A receiver that receives from the content storage device via a route, and
An information collector device characterized by being equipped with. A content storage device connected to an information-oriented network
A receiver that receives interest containing request content data from the information collector device via a low-speed communication path that constitutes an information-oriented network, and a receiver.
A processor that performs a search process for searching the content corresponding to the search condition described in the request content data included in the interest from the content stored in the own device.
A transmission unit that transmits the content found in the search process to the information collector device via a high-speed communication path different from the low-speed communication path.
A content storage device characterized by being equipped with.

Images