JP2002014920A - Information network path constructing method and information network system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information network path constructing method for distributing information required by an information distribution destination computer to the information distribution destination computer from an information distribution source computer by an optimum network path in accordance with the characteristic of information. SOLUTION: In the information network path constructing method in an information network system where a plurality of computes is connected through a communication line, the information distribution source computer holding request information that the information distribution destination computer requires receives an information supply request from the information distribution destination computer, constructs the optimum network path at every attribute of request information as the network path to the information distribution destination computer from the information distribution destination computer through an information repeating computer and distributes information to the distribution destination computer.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information network path construction method and an information network system emphasizing information attributes, and more particularly to a technique which is effective in improving information use efficiency.

[0002]

2. Description of the Related Art In the conventional intra / internet technology, a range of information distribution / sharing is expanded by connecting a plurality of LANs with a higher-level network. In general,
The information to be distributed / shared in the network is based on one-to-one communication from the information distribution source computer to the information distribution destination computer, and when the information distribution source computer authorizes the information distribution destination computer to provide information. Only the information is provided to the information distribution destination computer. Also, as a conventional information distribution method, when an information distribution destination computer located on a certain network acquires information held by an information distribution source computer located on an external network, the information distribution destination computer passes through a proxy server. Methods for connecting to external networks are known. In this conventional example, the proxy server internally holds information at the time of connection, and when the information distribution destination computer attempts to acquire information from the external network, unless the information distribution source computer explicitly requests information from the information distribution source computer, It does not connect to the external network, but uses the information stored inside the proxy server.

[0003]

However, in the above-described conventional example, when information is provided between arbitrary computers, the information distribution source computer reduces the load of the authentication process for confirming the identity of the information distribution destination computer. Necessary, and the information distribution destination computer cannot acquire the information provided by the information distribution source computer unless the information distribution source computer is authenticated by the information distribution source computer.
For this reason, in the conventional example, there is a problem that information required by the information distribution destination computer cannot be freely acquired even in a state where it is held in a physically close computer. In order to solve this problem, in the conventional example,
Reuse of the acquired information using a proxy server is considered. However, conventional information reuse using a proxy server involves not only the problem that the information held by the proxy server is not guaranteed to be the latest information at that time, but also the use of information using the proxy server. In the reuse, when the information distribution destination computer always needs information having a short lifespan, there is a problem that the function of retaining the information of the previous connection of the proxy server is useless.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide an information network path construction method and an information network system with information required by an information distribution destination computer. Is to be distributed to an information distribution destination computer through an optimal network path according to information regardless of the network in which the information distribution source computer is arranged. The above and other objects and novel features of the present invention will become apparent from the description of the present specification and the accompanying drawings.

[0005]

SUMMARY OF THE INVENTION Among the inventions disclosed in the present application, the outline of a representative one will be briefly described.
It is as follows. That is, the present invention relates to an information network path construction method in an information network system in which a plurality of computers are connected via a communication line, wherein the information distribution source computer holds request information required by the information distribution destination computer. Receives an information provision request from the information distribution destination computer, and, as a network path from the information distribution destination computer to the information distribution destination computer via the information relay computer, an optimal network path for each attribute of the request information. It is constructed and distributed to the distribution destination computer.

Further, the present invention is characterized in that the information distribution source computer distributes the latest request information to the information distribution destination computer every time the request information is updated.
Further, according to the present invention, when the information distribution source computer constructs an optimal network path for each attribute of the request information,
The network path is weighted for each attribute of the request information to dynamically construct the network path. Further, according to the present invention, when the information distribution destination computer receives, from another computer, an information request for providing the request information, the information distribution destination computer functions as an information relay computer, and transmits the request information. It is characterized by being distributed to the other computers.

Further, according to the present invention, in an information network system in which a plurality of computers are connected via a communication line, each of the computers includes information acquisition means for acquiring information distributed from any computer; An information distribution unit that distributes information, an information analysis unit, an information storage unit, and a network path table for each information attribute that stores a network path for each information attribute, wherein the information analysis unit includes:
Analyze the contents of information transmitted from any computer obtained by the information obtaining means, request information for which an information provision request has been made from any computer, and relay information to relay from any computer to any other computer Distribution to the information distribution means, and when the attributes of the request information and the relay information are new information attributes, generate an optimal network path and update the information attribute-specific network path table, The information distributing means distributes the information provision request to all the neighboring computers, reads out the information notified by the information analyzing means from the information storage means, and stores the information in the network path table stored in the information attribute-specific network path table. It is distributed to the computer designated by.

Further, according to the present invention, each time the information analyzing means updates the request information, the information analyzing means distributes the request information,
The information distribution means is notified.
Further, the present invention is characterized in that when updating the network path table for each information attribute, the information analysis means weights a network path for each information attribute to generate an optimal network path. .

According to the above means, in an information network system in which a plurality of computers are connected via a communication line, each computer has an information distributing means, an information analyzing means, and an information obtaining means, and cooperates with each computer. The operation enables arbitrary information distribution on the same protocol. Further, according to the means, when a computer distributes information to another computer in the vicinity, an optimal network path can be selected according to the information attribute-specific network path table, which differs for each property of information. It becomes possible to select a network path. Further, according to the above-mentioned means, every time the information is updated, the information distribution source computer distributes the information, so that it is possible to solve the problem at the time of reusing information which was a problem with the conventional proxy server. In addition, since it is possible to avoid authentication of the information distribution destination computer by the conventional information distribution source computer, it is possible to reduce the overhead of providing information from the information distribution source computer.

[0010]

Embodiments of the present invention will be described below in detail with reference to the drawings. In all the drawings for describing the embodiments, components having the same functions are denoted by the same reference numerals, and repeated description thereof will be omitted. FIG. 1 is a block diagram showing a schematic configuration of a computer used in the information network system according to the embodiment of the present invention. In the information network system according to the present embodiment, the physical communication line 110 is used as a distribution route for information to be distributed, and a plurality of computers connected via the physical communication line 110 are provided with an information acquisition function 101, an information distribution function, respectively. A function 102, an information analysis function 103, and an information storage area 104 are provided. The information acquisition function 101 acquires information distributed from an arbitrary computer. The information distribution function 102 distributes information held in a computer to other computers on a physical communication line. The information analysis function 103 analyzes the information acquired by the information acquisition function 101. Here, the information acquisition function 10
1. The information distribution function 102 and the information analysis function 103
Information handled by each function is exchanged via the information storage area 104.

The information storage area 104 stores a network topology 105, a matrix 106, acquired information 107, computer location information 108, and information attributes 109. A network topology (information attribute-based network structure table) 105 means a logical link between computers arranged on the network. The network topology 105 is a logical location information of the information distribution source computer and an information distribution destination computer. Is represented by the logical position information.
The network topology 105 is configured for each information attribute and does not depend on the physical configuration of the network. A matrix (network path weighting table by information attribute) 106 represents physical location information between the information distribution source computer and a computer close to the information distribution source computer. Path information between the computers connected via the line 110 and the physical communication line 110 required for information distribution between them
Is represented by the weight of The acquisition information 107 is an area for storing information acquired by using the information acquisition function 101. The computer location information 108 is an area for storing physical location information and logical location information of a distribution source computer and a distribution destination computer for a certain information attribute. The information attribute 109 is
This area stores the characteristics of information added to the information to be obtained.

FIG. 2 is a diagram for explaining information used in the present embodiment. The header 201 shown in FIG.
Characters, character strings, or symbols indicating the physical and logical positions of the information distribution source computer and the information distribution destination computer are held. The information attribute 202 is information for grouping the information contents 203, and the information attribute 202 holds a character, a character string, or a symbol meaning the property of the information contents 203. The information content 203 is a character, a character string, or
Hold sign.

FIG. 3 is a block diagram showing an overall configuration diagram of the information network system according to the present embodiment. The information network system shown in FIG. 3 is a system that distributes weather information and obtains weather information among a plurality of computers. In FIG. 3, the computer position information 108 and the information attribute 109 shown in FIG. 1 are collectively described as computer position information and information attribute. Hereinafter, a computer (information distribution destination computer) 40 functioning as a client
In this embodiment, a flow of a series of information from when a computer (information distribution source computer) 403 functioning as an information providing server provides information until the computer 401 obtains the information in response to the first information providing request will be described. An information network dynamic construction method will be described.

FIG. 4 shows the computers (401, 40) shown in FIG.
2, 403). In FIG. 4, a computer 401 does not hold necessary weather information in an information storage area 406 for the purpose of acquiring weather information, and uses an information distribution function 408 to send information to a nearby computer 402. It is assumed that weather information is requested by distributing the provision request information. The computer 403
Is assumed to acquire weather information using the antenna 428, and always keep the latest weather information in the acquired information 416 in the information storage area. The weather information is information that is updated irregularly, and furthermore, the weather information has a large amount of information, and priority is given to performing distribution without causing congestion on the physical communication line 110. The computer 402 does not need the weather information at the time and is a computer functioning as an information relay server. In FIG. 4, the physical location of each computer is represented by a MAC address, and the logical location of each computer is represented by an IP address. In determining network congestion, the time from when a computer outputs control information to when it arrives at another computer and when the arrival confirmation information arrives at the original computer is used.

FIG. 5 shows each computer (401, 4) shown in FIG.
02, 403). First, FIG.
As shown in (1), the computer 401 executes information distribution processing (information distribution processing 301 in FIG. 5). Computer 4 shown in FIG.
01 is the physical communication line 11 using the information distribution function 408.
0, the information provision request information is distributed. Here, the information distribution function includes an information distribution function 1 that is an information distribution function to a computer and an information distribution function 2 that is an information update notification function. FIG. 6 is a flowchart illustrating a processing procedure of the information distribution function 1 among the information distribution functions. Hereinafter, the processing procedure of the information distribution function 1 will be described with reference to FIG. The information distribution function 1 determines the information attribute of the information to be distributed (step 311). If the information to be distributed is the information provision request information (Yes in step 311), the information distribution function 1 converts the information storage area (104 in FIG. 1) into a matrix. (106 in FIG. 1) is called, and information is distributed to all adjacent computers (step 314). When the information to be distributed is information other than the information provision request information (No in step 311), the information to be distributed and the physical location information of the computer are extracted from the information storage area using the information attribute ( Step 312) Acquire network topology information (105 in FIG. 1) from the information storage area using the information attribute of the distribution information (Step 313), and select an information distribution position from the physical location of the distribution destination computer and the network topology information. At the same time, the matrix (106 in FIG. 1)
To extract the optimum route to the physical location of the information distribution destination computer and distribute it to the information distribution destination computer (Step 3).
14).

The information distributing function 2 notifies the information distributing function 1 of the update of the previously distributed information. FIG. 7 is a flowchart illustrating a processing procedure of the information distribution function 2 among the information distribution functions. Hereinafter, the processing procedure of the information distribution function 2 will be described with reference to FIG. The information distribution function 2 determines whether the acquired information is held information update information (step 3).
21) If the acquired information is held information update information (Yes in Step 321), the held information held in the acquired information (107 in FIG. 1) in the information storage area is updated (Step 322). ), The index number of the information to be distributed is extracted from the acquired information, and the index number is passed to the information distribution function 1 so that the updated information to the computer that previously distributed the information to the information distribution function 1 Is notified (step 323). Information distribution function 1 receiving this notification
Distributes the updated information to the computer to which the information was previously distributed in steps 312, 313, and 314 in FIG.

FIG. 8 is a diagram showing information provision request information distributed from the information distribution function 408 of the computer 401 shown in FIG. As shown in FIG. 8, the information distribution function 408 of the computer 401 uses the information distribution function 1 to determine the information attribute “information request” of the information to be distributed, and stores “00” in the column 502 of the physical location of the computer in the header 501. -00-00-00-0F-01 'and' 192.168.1.1 'are stored in the column 503 of the logical location of the computer, and since the distribution destination has not yet been specified, the physical location of the distribution destination computer is Column 504 and logical position column 50
5 is stored in the information attribute column 506, and the information content request 507 is stored in the information content column 507 and distributed to the physical communication line 110. The information request from the computer 401 is transmitted to the computer 402.

The computer 402 that has received the information request from the computer 401 executes the process A of step 302 shown in FIG. As shown in the figure, this processing A includes an information acquisition processing 307, an information analysis processing 308, and an information distribution processing 309.
It consists of processing. Hereinafter, each processing content will be described. (1) Information acquisition process 307 shown in FIG. 5 The computer 402 acquires information provision request information from the computer 401 by using the information acquisition function 413, and stores it in the acquired information 425 in the information storage area 412. The new information acquisition is notified to the analysis function 415. FIG. 9 is a flowchart illustrating a processing procedure of the information acquisition function. Hereinafter, the processing procedure of the information acquisition function will be described with reference to FIG. The information acquisition function acquires information distributed from an arbitrary computer (step 331), registers an index number according to the sequentially acquired information, registers a flag for determining new information acquisition, and registers an information storage area. It is stored in the acquired information (107 in FIG. 1) (step 332), and the information analysis function is notified of an index number corresponding to the newly acquired information as a new information acquisition notice (step 333).

FIG. 10 is a diagram showing the acquired information 425 acquired by the information acquiring function 413 of the computer 402 shown in FIG. As shown in FIG. 10, the acquisition information 425 includes an index number column 601, a new acquisition flag column 602, and an acquisition information column 603. In the example shown in FIG. 4, the index number “1” is set in the index number column 601 and the index number column 6 is set.
The new acquisition flag '0' is stored in the new acquisition flag column 602 corresponding to 01, and the information provision request information is stored in the acquisition information column 603 corresponding to the index number column 601. Computer 40
The second information acquisition function 413 notifies the information analysis function 415 of 'index number 1' of the acquired information 425 as a new information acquisition notification.

(2) The information analysis function 415 of the computer 402 shown in FIG.
13 receives the new information acquisition notification from the information storage area 4
After acquiring the newly acquired information from the information processing unit 12, the information is expanded, processing for each information attribute is performed, and the matrix 411 and the network topology 410 in the information storage area are updated. Further, the information analysis function 415 determines whether the information requested by the information content of the information provision request information is held in the information storage area 412 as a result of the above-described processing, and determines whether or not the information is present in the information distribution function 414. Notify to.
FIGS. 11 and 12 are flowcharts showing the processing procedure of the information analysis function. Hereinafter, the processing procedure of the information analysis function will be described with reference to FIGS. The information analysis function determines whether the notification received from the information acquisition function is a new acquisition information notification (step 341). If the received notification is a new acquisition information notification (Yes in step 341), the information analysis function determines the notification. Using the information obtained in the information storage area (10 in FIG. 1)
7), the column of acquisition information based on the index number (60 in FIG. 10)
The unanalyzed information (newly acquired information) stored in 3) is acquired (step 342).

Next, the header and information attribute of the acquired unanalyzed information are extracted (step 343), and the header is expanded to extract computer location information (distribution source computer location information and distribution destination computer location information) (step 343). 344), the extracted computer location information and information attribute are combined with the computer location information (108 in FIG. 1) and information attribute (10 in FIG. 1) in the information storage area.
9) (step 345), a series of processes corresponding to the extracted information attribute is performed on the information content of the newly acquired information, and information corresponding to the information content of the acquired unanalyzed information is stored in the acquired information. Is determined (Step 3
46). Next, the presence or absence of a matrix (106 in FIG. 1) in the information storage area is determined using the extracted information attribute, and if there is a corresponding matrix, the matrix is read (step 347). Each time, a physical network path that is considered to have the highest utilization efficiency is extracted (step 348).

Next, it is determined whether or not the extracted information attribute is a new information attribute (step 349). If the extracted information attribute is not a new information attribute (No in step 349), the extracted computer position information is determined. A network topology (105 in FIG. 1) is created from the information and the information attribute (step 351), and stored in the network topology in the information storage area (step 352). If the extracted information attribute is a new information attribute (there is no corresponding matrix and the result of step 349 is Yes), a new matrix corresponding to the information attribute is generated from the environment information in the computer and other matrices. The information is registered in the matrix in the storage area (step 350). Next, steps 351 and 352 described above are executed.

FIG. 13 is a diagram showing computer position information and information attributes 426 after information attributes and computer positions are registered by the information analysis function 415 of the computer 402 shown in FIG. The information analysis function 415 of the computer 402
The information provision request information that matches the new acquisition information notification 'index number 1' notified from the information acquisition function 413 is extracted based on the index number of the acquisition information 425, and the header (501 in FIG. 8) in the information provision request information is extracted. ) And information attributes (50 in FIG. 8)
6) is extracted, the header is further expanded, and '00 -00-00-00-0F 'in the column of the physical location of the distribution source computer (502 in FIG. 8) is extracted.
-01 'and' 192.16 in the logical position column (503 in FIG. 8).
8.1.1 ', physical location of distribution destination computer (504 in FIG. 8)
'*' And '*' of the logical position (505 in FIG. 8),
The “information request” of the information attribute (506 in FIG. 8) is set in the corresponding column (702, 703,
704, 705, 701). In addition, the information analysis function 415 uses the index number “1” (601 in FIG. 10) of the acquisition information 425 to distribute the information provision request information to the information distribution function 414 as a series of processing for each information attribute. Notice.

FIG. 14 is a diagram showing a matrix 411 to which a row whose information attribute is an information request is added by the information analysis function 415 of the computer 402 shown in FIG. FIG.
The matrix 411 shown in (1) is composed of the communication load 803 up to the physical computer position uniquely specified by the “computer” in the physical computer position column 802 for each “information attribute” in the information attribute column 801. That is, in FIG. 14, the information of the “information request” in the information attribute column 801 includes the computer 402 holding the matrix 411 and the “00-00-00-00-0F-03” in the physical computer position column 802. Among the calculators shown,
This means that a time of 30 ms is required as a communication load. This communication load can be obtained from the communication capacity between the computers and the amount of information. In the example shown in FIG.
The information analysis function 415 of the computer 402 has an information attribute (FIG. 8).
506) is extracted from the information attribute field of the matrix 411, corresponding to the matching attribute.

FIG. 15 is a diagram showing a network topology 410 in which a line whose information attribute is an information request is added by the information analysis function 415 of the computer 402 shown in FIG. As shown in FIG.
Is an information attribute column 901 and a distribution source computer position column 902
And a distribution destination computer position column 903. In the example shown in FIG. 4, the information analysis function 4 of the computer 402
15 is an information attribute column 9 of the network topology 410.
01, the information attribute 'information request' of the information provision request information,
The source computer location information '192.168.1.1' of the information provision request information is stored in the distribution source computer location column 902, and the distribution destination computer location information '*' is stored in the distribution destination computer location column 903. The network topology 410 shown in FIG.
Computer 402 holding network topology 410
Obtains the information of “information request” in the information attribute column 901 from the computer of “192.168.1.1” in the distribution source computer location column 902, and sends the information to the “*” computer in the distribution destination computer location column 903. Means to distribute. As previously mentioned,
The information analysis function 415 in the computer 402 notifies the information distribution function 414 that the information requested by the information content of the information provision request information is not stored in the information storage area 412 in the above-described series of processing. .

(3) Information distribution processing 309 shown in FIG. 5 The information distribution function 414 of the computer 402 shown in FIG.
Based on the processing procedure of the information distribution function 1 described in FIG. 6, the information provision request information distributed from the computer 401 is
Distribute to other computers. In this case, the computer 40
The information distributing function 414 of No. 2 determines the information attribute “information request” of the extracted information using the notification “1” from the information analyzing function 415, and determines the physical position column (FIG. 8) of the header (501 in FIG. 8). 8 502), the physical location information '00 -00-00-00-0F-02 'of the computer 402 is stored as the distribution source computer of the information provision request information, and the logical location column (FIG. 8). Of 5
03), the logical position information '192.168.1.
1 'is stored as the first distribution source computer of the information provision request information, and furthermore, since the distribution destination has not been specified yet, the column of the physical location (504 in FIG. 8) and the column of the logical location of the distribution destination computer (505 in FIG. 8) is stored with “*”, and “information request” is stored in the information attribute column (506 in FIG. 8).
"Weather information provision request" is displayed in the information content column (507 in FIG. 8).
Is stored and distributed to the physical communication line 110. The information request from the computer 402 is transmitted to the computer 403.

The computer 403 that has received the information request from the computer 402 executes the process A of step 303 shown in FIG. First, the information acquisition function 420 of the computer 403
Performs the same processing as the information acquisition function 413 of the computer 402, and acquires information provision request information. FIG.
Is the information provision request relayed by the computer 402,
FIG. 9 is a diagram illustrating acquired information 416 obtained by a computer 403 using an information obtaining function 420 and stored in an information storage area 419. In the example illustrated in FIG. 16, the information provision request information acquired by the information acquisition function 420 of the computer 403 has an index number “2”, and the information acquisition function 420 uses the index number “2” as an information analysis function. 422 as a new information acquisition notification.

Next, the information analysis function 422 of the computer 403
In the same manner as the information analysis function 415 of the computer 402, the information provision request information acquired by the information acquisition function 420 is expanded and analyzed, and the information distribution function 421 corresponds to the acquired information area 416 in the information storage area. Notify that weather information will be distributed. That is, the information analysis function 422 extracts the information provision request information from the acquisition information 416 using the new information acquisition notification '2', and obtains the position information of the information distribution source computer and the information distribution destination computer and the information provision request information. The information attribute is stored in the computer position information and the information attribute 427, and as a series of processing, it is determined that information corresponding to the information content of the obtained information is stored in the obtained information 416, and the information distribution function 421 is determined. , An index number “1” corresponding to the weather information of the acquired information 416 is notified, a matrix necessary for distribution of the weather information is generated, and a network topology is generated.

FIG. 17 is a diagram showing a matrix 418 generated by the information analysis function 422 of the computer 403 shown in FIG. FIG. 18 is a diagram showing a network topology 417 generated by the information analysis function 422 of the computer 403 shown in FIG. Next, the information distribution function 421 of the computer 403 responds to the request for the weather information in the information content of the information provision request information by the notification from the information analysis function 422 from the acquired information 416 in the information storage area 419 to the information attribute. , And distributes the information to the computer 401.

FIG. 19 is a diagram showing weather information distributed by the information distribution function 421 of the computer 403 shown in FIG. As shown in FIG. 19, the information distribution function 421 of the computer 403 determines the information attribute “information request” of the extracted information using the notification from the information analysis function 422, and distributes the header (501 in FIG. 8) from the distribution source. The column of the physical position of the computer (502 in FIG. 8) and the column of the logical position (503 in FIG. 8)
In addition, the physical location information of the computer 403 '00 -00-00-00-0F-0
3 'and logical location information' 192.168.1.3 '
Also, a column of the physical location of the distribution destination computer (504 in FIG. 8)
In addition, the physical location information of the computer 402 '00 -00-00-00-0F-0
2 'is stored, and the logical position information' 192.168.1.1 'of the computer 401 is stored in the logical position column (505 in FIG. 8), and the' meteorological information 'column is stored in the information attribute column (506 in FIG. 8). The “information” is stored in the information content column (507 in FIG. 8), and is distributed to the physical communication line 110 by storing the “weather information A”.

The weather information shown in FIG. 19 is transmitted to the computer 401 via the computer 402. The computer 401 that has received the weather information from the computer 403 executes the information acquisition process of step 305 and the information analysis process of step 306 shown in FIG. First, the information acquisition function 407 of the computer 401 performs the same processing as the information acquisition function 413 of the computer 402, and the information distribution function 421 of the computer 403.
, And stores the obtained information in the acquired information 423 in the information storage area 406, and notifies the information analysis function 409 of the acquisition of new information. FIG. 20 is a diagram showing the acquired information 423 after the weather information has been acquired by the information acquisition function 407 of the computer 401. In the example shown in FIG. 20, the information provision request information acquired by the information acquisition function 407 of the computer 401 has an index number “2”, and the information acquisition function 407 converts the index number “2” into an information analysis function. 409
As a new information acquisition notification.

Next, the information analysis function 409 of the computer 401
Is similar to the information analysis function 415 of the computer 402 described above.
The target information is extracted from the acquired information 423 in the information storage area 406, and the processing is performed. That is, the information analysis function 409
Determines that the information “weather information” corresponding to the information provision request information distributed by the information distribution function 408 has been acquired in the acquisition information 423, and performs a series of processes corresponding to the information attribute “weather information”. FIG. 21 is a diagram showing a matrix 405 generated by the information analysis function 409 of the computer 401. FIG. 22 shows a network topology 404 generated by the information analysis function 409 of the computer 401.
As shown in FIGS. 21 and 22, as a result of analysis by the information analysis function 409 of the computer 401, a matrix 405 is obtained.
And a line whose information attribute is “weather information” is added to the network topology 404. This weather information is distributed to the computer 401 every time it is updated by the computer 403.

In the present embodiment, for example, when the computer 404 shown in FIG. 3 distributes an information request to obtain weather information, the computer 401
Is distributed to the computer 404. That is, the computer 401 functioning as a client dynamically functions as an information relay server. In the above description, the computer 40
The case where “weather information” is distributed to the computer 401 through the network path of 3 → the computer 402 → the computer 401 has been described, but this network path is dynamically changed according to the weight of the network path (communication load). That is, in the present embodiment, the information analysis function of each computer selects a network path that minimizes the communication load to the computer 401, and as a result, an optimal network path is selected. For example, the computer 40
3 → Computer A → If the communication load of the network path of the computer 401 is lighter than the network path of the computer 403 → the computer 402 → the computer 401, the computer 403
Selects a network path from the computer 403 → the computer A → the computer 401, and furthermore, the communication load fluctuates according to the information attribute. Therefore, this network path is changed for each information attribute.

In the above description, in order to select a network path from a computer functioning as an information providing server to a computer functioning as a client, one-to-one connection to each computer is performed using a matrix or environment information of the computer.
It is assumed that at least one network path is known. As described above, according to the present embodiment, when distributing information from a computer functioning as an information providing server to a computer functioning as a client, an optimal physical network path can be selected for each piece of information. Therefore, it is possible to construct a dynamic information network suitable for information to be distributed.

According to the present embodiment, not only the efficient use of information can be promoted by the information request and information distribution using the network topology in the information storage area as information, but also the explicit Expansion is also possible. As described above, the invention made by the inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and can be variously modified without departing from the gist of the invention. Of course.

[0036]

The effects obtained by typical ones of the inventions disclosed in the present application will be briefly described as follows. (1) According to the present invention, an optimum physical network path can be selected for each piece of information, and information can be distributed from the information distribution source computer to the information distribution destination computer, and dynamic information suitable for the information to be distributed A network can be constructed. (2) According to the present invention, not only can the efficient use of information be promoted, but also the information network can be explicitly expanded.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic configuration of a computer used in an information network system according to an embodiment of the present invention.

FIG. 2 is a diagram for describing information used in the present embodiment.

FIG. 3 is a block diagram showing an overall configuration diagram of the information network system according to the present embodiment.

FIG. 4 is a computer (401, 402, 403) shown in FIG.
It is a figure which extracts and shows the part of FIG.

FIG. 5 is a diagram showing a processing procedure of each computer (401, 402, 403).

FIG. 6 is a flowchart showing a processing procedure of an information distribution function 1 of the information distribution functions.

FIG. 7 is a flowchart illustrating a processing procedure of an information distribution function 2 of the information distribution function.

FIG. 8 is a diagram showing information provision request information distributed from an information distribution function 408 of the computer 401.

FIG. 9 is a flowchart illustrating a processing procedure of an information acquisition function.

FIG. 10 is a diagram illustrating acquired information 425 acquired by an information acquiring function 413 of the computer 402.

FIG. 11 is a flowchart illustrating a processing procedure of an information analysis function.

FIG. 12 is a flowchart illustrating a processing procedure of an information analysis function.

FIG. 13 is a diagram showing computer position information and information attributes 426 after information attributes and computer positions are registered by the information analysis function 415 of the computer 402.

FIG. 14 is a diagram showing a matrix 411 to which information request rows are added by the information analysis function 415 of the computer 402.

FIG. 15 shows a network topology 4 in which an information request line is added by the information analysis function 415 of the computer 402.
FIG.

16 is a diagram illustrating an example of information obtained by the computer 403 using the information obtaining function 420 and storing the information providing request relayed by the computer 402 in the information storage area 419. FIG.
FIG.

FIG. 17 is a diagram showing a matrix 418 generated by the information analysis function 422 of the computer 403.

FIG. 18 is a diagram showing a network topology 417 generated by the information analysis function 422 of the computer 403.

FIG. 19 is a diagram showing weather information distributed by the information distribution function 421 of the computer 403.

FIG. 20 is a diagram showing acquired information 423 after weather information has been acquired by the information acquiring function 407 of the computer 401.

FIG. 21 is a diagram showing a matrix 405 to which a row of weather information is added by the information analysis function 409 of the computer 401.

FIG. 22 shows a network topology 4 in which a row of weather information is added by the information analysis function 409 of the computer 401.
04 is shown.

[Explanation of symbols]

101, 407, 413, 420 ... information acquisition function, 10
2,408,414,421 ... information distribution function, 103,
409, 415, 422 ... information analysis function, 104, 40
6,412,419 ... information storage area, 105,404,
410, 417: Network topology, 106, 40
5,411,418 ... Matrix, 107,416,4
23, 425: Acquisition information, 108: Computer position information, 1
09: information attribute, 424, 426, 427: computer location information and information attribute, 110: physical communication line, 401, 4
02, 403: computer, 428: weather information acquisition antenna.

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kanae Sakuma 3-2-1-16 Omorikita, Ota-ku, Tokyo F-term in Hitachi Systems & Services Co., Ltd. 5B045 BB11 DD16 5B085 AA08 BG07

Claims (7)

[Claims] 1. An information network path construction method in an information network system in which a plurality of computers are connected via a communication line, wherein an information distribution source computer holding request information required by an information distribution destination computer is provided. Receiving an information provision request from the information distribution destination computer and constructing an optimal network path for each attribute of the request information as a network path from the information distribution destination computer to the information distribution destination computer via the information relay computer. And distributing the information to the distribution destination computer. 2. The information network path according to claim 1, wherein the information distribution source computer distributes the latest request information to the information distribution destination computer every time the request information is updated. How to build. 3. The information distribution source computer, when constructing an optimal network path for each attribute of the request information, weights the network path for each attribute of the request information and dynamically constructs a network path. The information network path construction method according to claim 1 or 2, wherein 4. When the information distribution destination computer receives an information request for providing the request information from another computer, the information distribution destination computer functions as an information relay computer and transmits the request information to the information relay computer. 4. The information network path construction method according to claim 1, wherein the information network path is distributed to another computer. 5. An information network system in which a plurality of computers are connected via a communication line, wherein each of said computers obtains information distributed from an arbitrary computer, and distributes information to the communication line. An information distributing unit, an information analyzing unit, an information storing unit, and an information attribute-based network path table for storing a network path for each information attribute, wherein the information analyzing unit is an arbitrary attribute acquired by the information acquiring unit. Analyze the contents of the information transmitted from the computer of, the distribution of request information that has been requested to provide information from any computer, and the distribution of relay information to relay from any computer to any other computer, to the information distribution means And, when the attributes of the request information and the relay information are new information attributes, generate an optimal network path and Updating the separate network path table, distributing the information provision request to all adjacent computers, reading the information notified by the information analyzing means from the information storage means, and An information network system for distributing to a computer specified by a network path stored in a path table. 6. The information network according to claim 5, wherein the information analyzing unit notifies the information distributing unit of distribution of the request information every time the request information is updated. system. 7. The information analysis means, when updating the information-attribute-specific network path table, weights a network path for each information attribute to generate an optimum network path. The information network system according to claim 5 or 6.