JP6226455B2 - Join determination device, communication device, program, and join determination method - Google Patents

Description

  The present invention relates to a technique for determining whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication simultaneously.

  Conventionally, techniques for integrating different wireless media such as a wireless local area network (LAN) and a mobile phone have been proposed. Patent Document 1 discloses a technology for integrating heterogeneous radio systems having different cell sizes such as a pico cell, a micro cell, and a macro cell by using a cognitive base station and a cognitive terminal. The cognitive base station and the cognitive terminal include a switch, a plurality of wireless modules, and a wireless environment recognition unit. The wireless environment recognition unit recognizes the wireless environment, and based on the recognition result, the link frame is transmitted to the switch. Instructs switching of a wireless module as a distribution destination. The link frame is transmitted / received via the designated wireless module.

  In recent years, in a wireless communication system configured in this way, link aggregation by an application is possible. FIG. 3 is a block diagram showing a schematic configuration of a conventional communication apparatus. The conventional communication apparatus includes a request unit 31, a first wireless communication interface 33, a second wireless communication interface 35, and a coupling unit 37. The request unit 31 inputs information for downloading data, for example, a destination URL as request information. The request unit 31 divides one requested data, designates a download range, and issues a download request to each of the first wireless communication interface 33 and the second wireless communication interface 35. The combining unit 37 combines data acquired from each wireless communication interface.

  Here, for example, one large data can be divided and each divided data can be downloaded using a plurality of links. The user has an IP (Internet Protocol) address for each interface of the wireless communication system, and designates a part of the data from each IP address using a GET method of HTTP (Hypertext Transfer Protocol). Thereby, it becomes possible to download one data using a plurality of links (a plurality of wireless communication systems).

  Further, instead of dividing the data, a plurality of types of data can be downloaded simultaneously using a plurality of different links. For example, mutually different links are designated for each of a plurality of data having different destinations constituting one WEB (World Wide Web) page. As a result, data necessary for displaying one WEB page can be downloaded simultaneously using a plurality of links.

JP 2008-085759 A

RFC2616, Hypertext Transfer Protocol-HTTP / 1.1

  However, in link aggregation in which data is downloaded using a plurality of wireless links at the same time, one data is requested to the server using a plurality of wireless links, and when the data received from the server is combined, all received data If they are combined, data inconsistency may occur. For example, if a user uses Wi-Fi as a single wireless link and is transferred to a URL for confirming Wi-Fi communication connection in a limited area such as a hotel, data acquired via Wi-Fi Is different from the requested data, and when combined with the correct data acquired on the other radio link, it becomes completely different data. Also, when each wireless link downloads data from a separate cache server, if one of the cached data is old, combining it will be different from the requested data. Such inconsistency of the combined data can be determined at the stage when the download is completed. The user makes a request again and downloads the data, but it is desirable that the inconsistency of the data be found early.

  The present invention has been made in view of such circumstances, and when combining data downloaded from a plurality of wireless links, a combination determination apparatus, a communication apparatus, and a communication apparatus capable of detecting data inconsistency at an early stage An object is to provide a program and a method for determining a combination.

  (1) In order to achieve the above object, the present invention takes the following measures. That is, the combination determination apparatus of the present invention is a combination determination apparatus that determines whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication at the same time. An analysis unit that extracts identification information included in the data, and a comparison unit that determines whether to combine the data based on the identification information and notifies the determination result.

  In this way, the identification information possessed by each data is extracted, and based on each identification information, it is determined whether or not the data should be combined. Therefore, the consistency of each data is determined at an early stage, and the correct data is determined at an early stage. It can be downloaded. If there is inconsistency in each data, it is possible to re-request data at an early stage. As a result, all data can be acquired early and efficiently.

  (2) In the connection determination device of the present invention, the analysis unit extracts an HTTP (Hypertext Transfer Protocol) response header or status code from the data as the identification information, and the comparison unit It is determined whether or not the data should be combined based on the HTTP response header or status code extracted from.

  In this way, as the identification information, an HTTP response header or status code is extracted from each data, and based on the HTTP response header or status code extracted from each data, it is determined whether or not each data should be combined. It becomes possible to determine the consistency of each data at an early stage. If there is inconsistency in each data, it is possible to re-request data at an early stage. As a result, all data can be acquired early and efficiently.

  (3) In the connection determination device of the present invention, the analysis unit extracts a Content-Type and a Content-Range from an HTTP response header, and the comparison unit is configured to extract the entire Content-Type or Content-Range. When the sizes match, it is determined that the respective data should be combined. On the other hand, when the entire sizes of the Content-Type or Content-Range do not match, it is determined that the respective data should not be combined. It is characterized by doing.

  In this way, if the Content-Type and Content-Range are extracted from the HTTP response header and the overall size of the Content-Type or Content-Range matches, it is determined that the data should be combined, If the overall sizes of Content-Type or Content-Range do not match, it is determined that the data should not be combined, so it is possible to easily and quickly determine the consistency of the data.

  (4) Moreover, in the combination determination apparatus of the present invention, the analysis unit extracts Last-Modified from the HTTP response header, and the comparison unit determines whether each of the last-modified is matched. While determining that the data should be combined, if the Last-Modified does not match, it is determined that the data should not be combined.

  As described above, when the Last-Modified is extracted from the HTTP response header and the Last-Modified matches, it is determined that the data should be combined. On the other hand, when the Last-Modified does not match, Since it is determined that the data should not be combined, it is possible to easily and quickly determine the consistency of the data.

  (5) In the connection determination device of the present invention, the analysis unit extracts a status code of an HTTP (Hypertext Transfer Protocol) response from the data as the identification information, and the comparison unit determines that the status code is If it is in the 200th range, it is determined that the respective data should be combined. On the other hand, if the status code is not in the 200th range, it is determined that the respective data should not be combined.

  In this way, since it is determined whether or not the status code is in the 200s, it is possible to determine the consistency of each data simply and quickly. That is, among the status codes, the 200 series indicates that data transmission / reception has been successful, and therefore it is possible to determine the consistency of data simply by referring to whether the status code is in the 200 series.

  (6) Further, in the combination determination device of the present invention, when the comparison unit determines that the data should not be combined, the comparison unit determines whether the acquired data is authentic or not based on the information of the request data. Information indicating that the use of the wireless communication interface from which the data determined to be obtained should be stopped is output.

  As described above, since the information indicating that the use of the wireless interface that acquired the data determined not to be authentic should be stopped is output, the use of the wireless link (wireless communication interface) in which inconsistency occurs is avoided and promptly performed. Data can be downloaded.

  (7) In the connection determination device of the present invention, the comparison unit outputs information indicating that the wireless communication interface that has acquired the data in which the status code is in the 200s is used, and the status code The information indicating that the use of the wireless communication interface that acquired the data other than those in the 200s should be stopped is output.

  In this way, information indicating that the use of the wireless communication interface that acquired the data whose status code was in the 200s is output, while the use of the wireless communication interface that acquired the data whose status code is other than the 200s is output. Therefore, it is possible to avoid the use of a wireless link (wireless communication interface) in which inconsistency occurs and to download data quickly.

  (8) In addition, the combination determination apparatus of the present invention further includes a request unit that divides content data to be acquired into a plurality of partial data, and requests each partial data from each wireless communication interface. The analysis unit makes a request so that a part of each partial data is duplicated, and the analysis unit extracts a duplicate part of the partial data acquired from each wireless communication interface as a response to the request as the identification information, and the comparison When the overlapping parts of the partial data as the identification information match, the part determines that the partial data should be combined, while the overlapping parts of the partial data as the identification information match. If not, it is determined that the partial data should not be combined.

  In this way, the overlapping portion of the partial data acquired from each wireless communication interface as a response to the request is extracted as identification information, and if the overlapping portions of the partial data as identification information match, the partial data are combined. On the other hand, if the overlapping parts of the partial data as identification information do not match, it is determined that the partial data should not be combined, so only the so-called body part is used without using a header. Even if it exists, it becomes possible to judge the consistency of data.

  (9) Further, the communication device of the present invention includes a plurality of wireless communication interfaces capable of simultaneously performing wireless communication, the combination determination device according to any one of (1) to (8), and the combination determination. A combining unit that combines a plurality of pieces of data acquired by the wireless communication interfaces according to a determination result of the device.

  With this configuration, the identification information of each data is extracted, and based on each identification information, it is determined whether or not the data should be combined. Therefore, it is possible to determine the consistency of each data at an early stage. If there is inconsistency in each data, it is possible to re-request data at an early stage. As a result, all data can be acquired early and efficiently.

  (10) Further, the program of the present invention is a program for determining whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication at the same time. Causing the computer to execute a series of processes: a process for extracting the identification information, a process for determining whether the data should be combined based on the identification information, and a process for notifying the determination result It is characterized by that.

  In this way, the identification information possessed by each data is extracted, and based on each identification information, it is determined whether or not the data should be combined. Therefore, the consistency of each data is determined at an early stage, and the correct data is determined at an early stage. It can be downloaded. If there is inconsistency in each data, it is possible to re-request data at an early stage. As a result, all data can be acquired early and efficiently.

  (11) The coupling determination method of the present invention is a coupling determination method for determining whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication at the same time. Extracting at least identification information included in each data; determining whether or not to combine the data based on the identification information; and notifying the determination result. Features.

  In this way, the identification information possessed by each data is extracted, and based on each identification information, it is determined whether or not the data should be combined. Therefore, the consistency of each data is determined at an early stage, and the correct data is determined at an early stage. It can be downloaded. If there is inconsistency in each data, it is possible to re-request data at an early stage. As a result, all data can be acquired early and efficiently.

  According to the present invention, the identification information included in each data is extracted, and based on each identification information, it is determined whether or not each data is to be combined. It becomes possible to download early. If there is inconsistency in each data, it is possible to re-request data at an early stage. As a result, all data can be acquired early and efficiently.

It is a block diagram which shows schematic structure of the communication apparatus which concerns on this embodiment. It is a flowchart which shows operation | movement of the communication apparatus which concerns on this embodiment. It is a block diagram which shows schematic structure of the conventional communication apparatus.

  In the link aggregation technology in which one file is downloaded by a plurality of wireless links, the present inventors may cause data inconsistency if the received data are simply combined. In addition, the inconsistency may occur. Pay attention to the fact that the data is downloaded only after completion of the data download, and whether or not to combine multiple data by comparing the response signal of each radio link or intentionally duplicated partial data at an early stage As a result, the present inventors have found that it can be determined at an early stage.

  That is, the present invention is a combination determination device for determining whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication at the same time, the identification information included in each of the data And a comparison unit that determines whether or not the data should be combined based on the identification information and notifies the determination result.

  Thereby, the present inventors made it possible to determine the consistency of each data at an early stage and to download correct data at an early stage. Embodiments of the present invention will be specifically described below with reference to the drawings.

(First embodiment)
FIG. 1 is a block diagram illustrating a schematic configuration of a communication apparatus according to the present embodiment. Although the HTTP technology is applied to the communication apparatus according to the present embodiment, the present invention is not limited to this. In FIG. 1, the communication device according to the present embodiment includes a request unit 11, a first wireless communication interface 13, a second wireless communication interface 15, a combining unit 17, and a combining determination device 19. The combination determination device 19 includes an analysis unit 21 and a comparison unit 23. The request unit 11 inputs information for downloading data, for example, a destination URL as request information. The request unit 11 divides one requested data, designates a download range, and issues a download request to each of the first wireless communication interface 13 and the second wireless communication interface 15. This request is an HTTP Request.

  A server (not shown) transmits data to the communication device by HTTP Response in accordance with this request (HTTP Request). HTTP Response is composed of a status line, a header, and a body (see Non-Patent Document 1).

An example of HTTP Response (status line, header) is shown below.
HTTP / 1.1 206 Partial content
Date: Sat, 17 Nov 2012 07:12:14 GMT
Last Modified: Fri, 16 Nov 2012 02:18:07 GMT
Content-Range: bytes 18010-37021 / 47022
Content-Length: 19012
Content-Type: image / gif
Here, in the status code of the status line, the 100s indicate information provision, the 200s indicate success, the 300s indicate transfer, the 400s indicate a client error, and the 500s indicate a server error.

There are several types of headers. An example is shown below.
Last-Modified indicates the date of modification.
Content-Type indicates the media type of the body.
Content-Range indicates where a part of the body falls within the whole body.

  In FIG. 1, the analysis unit 21 analyzes data received from each wireless communication interface, extracts an HTTP header and a status code for each wireless communication interface, and outputs the result to the comparison unit 23 as comparison information. Specifically, Last Modified, Content-Type, Content-Range, and status code. These correspond to the identification information.

  The comparison unit 23 determines whether the data should be combined using the comparison information of the data acquired from the wireless communication interfaces. The combining unit 17 combines the data according to the determination result output from the combination determining device 19.

  FIG. 2 is a flowchart showing the operation of the communication apparatus according to the present embodiment. The comparison unit 23 acquires comparison information of data acquired from each wireless communication interface (step S1). Next, the comparison unit 23 determines whether or not “Content-Type is the same and the size of the entire data described in the Content-Range is the same” (step S2). As a result of this determination, if the “Content-Type is the same and the size of the entire data described in the Content-Range is not the same”, the data is not combined (step S3). Then, a download request is made again using another radio link, or a process of not using the radio link in which a problem has occurred is performed (step S4). That is, the comparison unit 23 can determine the authenticity of the acquired data based on the information of the requested data when the data is requested. As a result of this determination, the comparison unit 23 outputs information indicating that the use of the wireless interface that acquired the data determined to be not authentic should be stopped. In this case, the communication device makes a download request again using another wireless communication interface that does not stop using the communication device. Thereby, it is possible to avoid the use of a wireless link (wireless communication interface) in which inconsistency occurs and to download data quickly.

  On the other hand, if “Content-Type is the same and the size of the entire data described in Content-Range is the same” in step S2, the data are combined (step S5). In step S2, it may be determined whether Last-Modified is the same. That is, the comparison unit 23 can determine the authenticity of the acquired data based on the information of the requested data when the data is requested. As a result of this determination, the comparison unit 23 continues to use the wireless communication interface in which the data whose Last-Modified is the same as the requested data is used, while the wireless communication interface in which the Last-Modified has acquired the data not the same as the requested data. You may make it stop using. It may also be determined whether the status code is in the 200s. That is, the comparison unit 23 outputs information indicating that the use of the wireless communication interface that has acquired the data whose status code is in the 200s is continued, while the wireless that has acquired the data whose status code is other than the 200s. Information indicating that the use of the communication interface should be stopped is output. Thereby, it is possible to avoid the use of a wireless link (wireless communication interface) in which inconsistency occurs and to download data quickly. It is also possible to make a judgment by combining a plurality of these.

  Thereby, the user can download correct data at an early stage by determining data inconsistency at an early stage.

(Second Embodiment)
In the present embodiment, the request unit 11 divides the content data to be acquired into a plurality of partial data, and requests each partial data from each wireless interface. At this time, the request unit 11 makes a request so that a part of each partial data overlaps. That is, when the request unit 11 designates a download range and issues a download request to the first wireless communication interface 13 and the second wireless communication interface 15, the request unit 11 intentionally overlaps the requested partial data ranges. Let For example, 0-100 bytes are requested for the first wireless communication interface 13, while 98-200 bytes are requested for the second wireless communication interface 15. As a result, the 98-100 byte portion will overlap.

  The analysis unit 21 extracts the overlapping bit string of 98-100 bytes (this corresponds to the identification information) and outputs it to the comparison unit 23 as comparison information. The comparison unit 23 compares the overlapping bit strings of 98-100 bytes, and determines whether they are the same, that is, whether each data should be combined.

  In the request unit 11, for example, when one TCP connection is established or one file is downloaded, the data is duplicated only for the first time, and thereafter, the same TCP connection or the same file is downloaded. When doing so, it is also possible to operate so as not to overlap. This is because, when downloading the same file from the same server, it is sufficient to confirm that it has been downloaded from the correct server once.

  Further, by combining the first embodiment and the second embodiment, the identity of HTTP Response may be determined, and the identity of overlapping portions of intentionally duplicated data may be determined.

  As described above, according to the present embodiment, it is possible to determine the consistency of each data at an early stage and to download correct data at an early stage. If there is inconsistency in each data, it is possible to re-request data at an early stage. As a result, all data can be acquired early and efficiently.

DESCRIPTION OF SYMBOLS 11 Request part 13 1st radio | wireless communication interface 15 2nd radio | wireless communication interface 17 Connection part 19 Connection determination apparatus 21 Analysis part 23 Comparison part 31 Request part 33 1st wireless communication interface 35 2nd wireless communication interface 37 Connection part

Claims (11)

A combination determination device for determining whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication simultaneously,
An analysis unit for extracting identification information included in each data;
Based on the identification information, the consistency of the data in the application layer is determined. When the data is determined to be consistent, the determination result that the data should be combined is notified, while the data is inconsistent. And a comparison unit that notifies a determination result that it should not be combined when it is determined. The analysis unit extracts an HTTP (Hypertext Transfer Protocol) response header or status code from the data as the identification information,
The combination determination apparatus according to claim 1, wherein the comparison unit determines the consistency of each data based on an HTTP response header or a status code extracted from each data. The analysis unit extracts Content-Type and Content-Range from the HTTP response header,
When the overall size of the Content-Type or Content-Range matches, the comparison unit determines that the data is consistent , while the overall size of the Content-Type or Content-Range is equal. 3. The combination determination apparatus according to claim 2, wherein if it is not determined, it is determined that the respective data are not consistent . The analysis unit extracts Last-Modified from the HTTP response header,
When the Last-Modified is matched, the comparison unit determines that the data is matched. On the other hand, when the Last-Modified is not matched, the data is not matched. The combination determination apparatus according to claim 2, wherein the determination is performed. The analysis unit extracts a status code of an HTTP (Hypertext Transfer Protocol) response from the data as the identification information,
When the status code is in the 200th range, the comparison unit determines that the data is consistent. On the other hand, when the status code is not in the 200th range, the data is not consistent. The combination determination apparatus according to claim 2, wherein the determination is performed. A combination determination device for determining whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication simultaneously,
An analysis unit for extracting identification information included in each data;
A determination unit that determines whether or not to combine the data based on the identification information, and a comparison unit that notifies the determination result , and
The analysis unit extracts Content-Type and Content-Range from the HTTP (Hypertext Transfer Protocol) response header as the identification information,
When the overall size of the Content-Type or Content-Range matches, the comparison unit determines that the respective data should be combined, while the overall size of the Content-Type or Content-Range matches. If not, it is determined that the data should not be combined, and if it is determined that the data should not be combined, the authenticity of the acquired data is determined based on the information of the request data. A coupling determination device that outputs information indicating that use of a wireless communication interface that has acquired the determined data should be stopped . A combination determination device for determining whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication simultaneously,
An analysis unit for extracting identification information included in each data;
A determination unit that determines whether or not to combine the data based on the identification information, and a comparison unit that notifies the determination result , and
The analysis unit extracts Last-Modified from the HTTP (Hypertext Transfer Protocol) response header as the identification information,
The comparison unit determines that the data should be combined if the Last-Modified matches, while the data should not be combined if the Last-Modified does not match If it is determined that the respective data should not be combined, the authenticity of the acquired data is determined based on the information of the request data, and the use of the wireless communication interface that acquired the data determined not to be authentic is stopped. A combination determination device characterized in that information indicating that it should be output is output . A combination determination device for determining whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication simultaneously,
A request unit that divides content data to be acquired into a plurality of partial data, and requests each partial data from each wireless communication interface;
An analysis unit for extracting identification information included in each partial data;
A determination unit that determines whether to combine the partial data based on the identification information, and a comparison unit that notifies the determination result , and
The request unit makes a request so that a part of each partial data overlaps,
The analysis unit extracts, as the identification information, an overlapping portion of partial data acquired from each wireless communication interface as a response to the request,
When the overlapping portions of the partial data as the identification information match, the comparison unit determines that the partial data should be combined, while the overlapping portions of the partial data as the identification information are identical. If not, it is determined that the partial data should not be combined. A plurality of wireless communication interfaces capable of performing wireless communication simultaneously;
A combination determination device according to any one of claims 1 to 8,
A communication device comprising: a combining unit that combines a plurality of data acquired by each of the wireless communication interfaces according to a determination result of the combination determination device. A program for determining whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication simultaneously,
A process of extracting identification information included in each data;
A process for determining consistency in the application layer of each data based on each identification information;
A series of processes of notifying the determination result that the data should be combined when the data is determined to be consistent, and notifying the determination result that the data should not be combined when the data is determined to be inconsistent A program that causes a computer to execute processing. A combination determination method for determining whether or not to combine a plurality of data acquired by a plurality of wireless communication interfaces capable of performing wireless communication simultaneously,
Extracting the identification information each data has;
Determining the consistency of each data in the application layer based on each identification information;
At least a step of notifying a determination result that the data should be combined when the data is determined to be consistent, and a notification of a determination result that the data should not be combined when the data is determined to be inconsistent. A method for determining a combination.

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