JP2003338838A - Communication control unit, and communication control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that information to be communicated on a transmitting side overflows occasionally when a communication velocity is decelerated on a network where the communication velocity is dynamically changed, for example, since a conventional information repeater defines an existent network infrastructure in which the communication velocity is statically defined as a target. <P>SOLUTION: The communication control unit is provided with: a network information collecting part 2 for collecting first status information by monitoring a status of a first communication line on which the communication velocity is dynamically changed; a flow determining part 4 for determining a data flow on the first communication line by acquiring the first status information from the network information collecting part 2; and a flow setting part 6 for reporting the data flow determined by the flow determining part 4 through the first communication line to a connected prescribed communication device and controlling the communication of the information with the prescribed communication device according to the determined data flow. In accordance with the dynamically changing communication velocity, the data flow is changed to efficiently use the first communication line. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a communication control device and a communication control method for efficiently using a communication line whose communication speed dynamically changes.

[0002]

2. Description of the Related Art As a conventional information relay method and apparatus,
For example, there is JP 2001-230805. FIG. 11 shows a configuration diagram of the control unit software of the information relay device of JP 2001-230805 A. JP 2001-230805 A
In order to effectively use the network, the invention described in (1) monitors the usage status of the network and sets a route based on the monitoring status. In FIG. 11, the statistical information management unit 520 acquires the statistical information from the statistical information collection unit and notifies the other programs of the statistical information as necessary. The route control protocol processing unit 530 is provided with the statistical information management unit 52.
0 is registered as a client that uses the statistical information, and the statistical information management unit 520 transfers the statistical information acquired from the statistical information collection unit to the statistical information protocol processing unit 530.
Ask to be notified. The routing control protocol processing unit 530 uses an OSPF (open shortest p
ath first) and other routing control protocols are managed, and the routing information necessary for packet transfer is updated based on the statistical information.

[0003]

The prior art is targeted at the existing network infrastructure in which the communication speed is statically defined, and aims at decentralizing the traffic with respect to the communication speed of each network. Is. The above-mentioned prior art does not consider the case where a network whose bandwidth changes dynamically is considered. For example, when the communication speed decreases, another route is searched, but the amount of data to be sent does not change, so another route If there is not, there is a problem that overflow occurs.

The present invention has been made in order to solve the above-mentioned problems, and targets a network whose band (communication speed) dynamically changes, so that the band (communication speed) may fluctuate at any time. For the purpose of optimal route control, the dynamically fluctuating band (communication speed) is constantly monitored, and the route control and flow control suitable for it are performed based on the information. Then, by these things, it aims at obtaining the communication control device and communication control method which can use a line effectively and safely.

[0005]

According to the present invention, there is provided a communication control device for connecting a predetermined communication device via a first communication line and communicating predetermined information with the connected predetermined communication device. The communication line is a communication network in which the communication speed dynamically changes, and the data flow rate on the first communication line changes in accordance with the change in the communication speed. Is a network information collecting unit that monitors the state of the first communication line to collect the first state information; and the first state information collected by the network information collecting unit. A data flow rate determining unit that determines the data flow rate on the communication line, and notifies the data flow rate determined by the data flow rate determining unit to the predetermined communication device, and according to the data flow rate, the predetermined communication device. upon Characterized in that a data flow rate setting unit for controlling the communication of predetermined information.

Further, in the communication control device according to the present invention, the communication control device is connected to a second communication line which is a communication line different from the first communication line and has a plurality of communication paths. Communicating predetermined information, the network information collecting unit monitors the state of the second communication line to collect second state information, and the communication control device is further determined by the data flow rate determining unit. A route determining unit that selects a predetermined communication route from the plurality of communication routes based on the data flow rate on the first communication line and the second state information collected by the network information collecting unit; And a route setting unit for controlling communication of the predetermined information according to the predetermined communication route determined by the route determination unit.

In the communication control device according to the present invention, the network information collecting unit collects the item information indicating the contents collected as the first state information and the first state information collected in association with the item information. And a threshold value information for determining whether or not there is a change in the first collection item storage unit, and stores the first state information for the item information stored in the first collection item storage unit. Collected and compared with the threshold information, if there is a change in the first state information,
The data flow rate determination unit is notified of the first state information.

Further, in the communication control device according to the present invention, the network information collecting unit collects item information indicating contents to be collected as the second state information, and second state information collected in association with the item information. A second collection item storage unit that stores threshold information for determining whether or not there is a change in the second state information regarding the item information stored in the second collection item storage unit. Collected and compared with the threshold information, if there is a change in the second state information,
It is characterized in notifying the route determination unit of the second state information.

Further, in the communication control device according to the present invention, the predetermined information has type information indicating a type of information to be communicated, and the communication control device further includes the type information of the predetermined information and the above-mentioned type information. A communication service request storage unit that stores communication service information indicating a communication service content requested by the type information in association with the type information, and the data flow rate determination unit is provided with the first state information and the predetermined information. The data flow rate on the first communication line is determined based on the communication service information corresponding to the type information.

Further, in the communication control device according to the present invention, the predetermined information has type information indicating a type of information to be communicated, and the communication control device further includes the type information of the predetermined information and the type information. A communication service request storage unit that stores communication service information indicating the communication service content requested by the type information in association with the type information is provided, and the route determination unit includes the data flow rate on the first communication line and the A predetermined communication path is selected from the plurality of communication paths based on the second state information and communication service information corresponding to the type information of the predetermined information.

According to the present invention, there is provided a communication control method for communicating predetermined information with a predetermined communication device connected via a predetermined communication line, wherein the predetermined communication line is a communication network whose communication speed dynamically changes. Then, in the communication network in which the data flow rate on the predetermined communication line changes in response to the change in the communication speed, the communication control method monitors the state of the predetermined communication line to obtain status information. Based on the network information collecting step to collect and the state information collected by the network information collecting step, the data flow rate determining step of determining the data flow rate on the predetermined communication line, and the data flow rate determining step. Data flow rate setting for notifying the predetermined communication device of the data flow rate and controlling communication of the predetermined information with the predetermined communication device according to the data flow rate And having a degree.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION In the embodiments described below,
An example of the invention will be described on the assumption that the communication control device of the invention is a device provided in a router. However, another device may be provided as long as it is a device that relays call information from a transmission source to a transmission destination, such as a gateway, a relay station, or a base station, instead of a router. Further, although the mobile phone device is used as an example of the predetermined communication device, another device may be used as long as it can connect to a communication line whose communication speed dynamically changes.
The first communication line is, for example, IMT2000 (int
international mobile telecom
However, other communication lines whose communication speeds change dynamically, wireless lines or wired lines may be used. The second communication line is, for example, a public line network, and may be another wired line network or a wireless line as long as it is a line that enables communication from a communication source to a communication destination through a plurality of routes. Further, the data flow rate determination unit is a flow determination unit, and the data flow rate setting unit is a flow setting unit.

Embodiment 1. FIG. 1 is a configuration diagram of a router including the communication control device of the present invention and a network whose communication path is managed by the router. In FIG.
Reference numerals 20 and 22 denote mobile phone devices, 20 denotes a transmitting side, and 22
Is the receiving side. Reference numerals 24 to 29 are routers, respectively, which are equipped with the communication control device of the present invention. Each of the routers 24 to 29 has a transmission side mobile telephone device 20.
It manages a plurality of communication paths from to the receiving side mobile telephone device 22. Reference numeral 30 is a communication line which is a first communication line and whose communication speed dynamically changes.
MT2000. The communication line 30 is the mobile phone device 2
0 or 22 and any one of the routers 24 to 29 are connected to communicate call information, content information, still image information, moving image information and the like as predetermined information. For example, the communication line 30 has a wide communication band and a high communication speed when the user having the mobile phone devices 20 and 22 is stopped. On the other hand, when the user having the mobile phone devices 20 and 22 is moving, the communication band is narrow and the communication speed is slow. FIG. 2 is a configuration diagram of the communication control device according to the first embodiment of the present invention. In FIG.
Reference numeral 1 is a route connection request management unit that receives a connection request from an application, and 2 is network information that collects (first and second) state information by monitoring the line speed and line state of the communication line 32 or the communication line 30. A collection unit 3 is a connection request content from the route connection request management unit 1 and a network information collection unit 2
Route determination unit that determines a route based on data from 4
Is a flow determining unit that determines the data flow rate on the communication line 32 based on the data from the network information collecting unit 2 as in 3, and 5 controls the communication of information through the route determined by the route determining unit 3. A route setting unit for controlling the flow, a flow setting unit 6 for controlling communication of information according to the data flow rate determined by the flow determining unit 4, and a TCP (transmission control) 7 for a request from an application.
ol protocol), UDP (user dat)
agram protocol) or direct IP (i
TCP / UDP use decision unit for passing data to the Internet protocol, 8 is UDP, 9 is TCP,
Reference numeral 10 is an application (AP) layer on which a user application operates, 11 is an IP layer, and 12 is a physical layer. The scope of the present invention is the functional units 1 to 7 described above and is located between the AP layer and the IP layer. Note that FIG.
In the block diagram of the invention shown in FIG.
Although CP and UDP are taken as an example, another protocol may be used.

FIG. 3 is a diagram for explaining changes in the communication speed (communication band) of the communication line 30 and changes in the data flow rate. The left side shows the maximum data flow rate when the communication speed is slow (communication band is narrow), and indicates that maximum four pieces of information can be communicated per unit time. The right side shows the maximum data flow rate when the communication speed is fast (the communication band is wide), and indicates that the information for eight circles can be communicated at the maximum per unit time. As can be seen from this figure, the communication speed (communication band) and the data flow rate capable of communication per unit time are in a proportional relationship. For example, the maximum value of the data flow rate becomes smaller when the band becomes narrower when the information of the maximum value is communicated in a certain band. For this reason, the information that has been communicated as before cannot be communicated, and the buffer on the transmission side may overflow and overflow.
In order to deal with this, it is necessary to adjust the data flow rate for communication according to the change in communication speed (communication band).

The operation of adjusting the data flow rate for communication according to the change of the communication speed (communication band) will be described with reference to the flow chart of FIG. In the first embodiment, the route selection is determined based on the number of passing routers and the communication charge as in the conventional case. First, the route connection request management unit 1 waits for a connection request from an application (S22). When there is a connection request from the application, the optimum path is determined based on the request from the application, and the status information of the communication line 30 is obtained from the network information collecting unit 2 (S23, network information collecting step), and the communication line 30 is acquired. The data flow rate in step S24 is determined (S24, data flow rate determination step). After that, the data flow rate is set for the communication control device side (router side) and the mobile phone device 20 side (mobile phone device 22 side) so as to control the communication on the communication line 30 according to the determined data flow rate ( (S26, data flow rate setting step), and the set contents are sent to the TCP / UDP use determining unit 7. The TCP / UDP usage determining unit 7 passes the information to be communicated to the TCP 9, UDP 8, or the IP layer 11 according to the content requested by the application (S27). Further, the network information collecting unit 2 confirms a change such as a change in the line communication speed of the communication line 30 during the execution of the application (S28), and if the change is confirmed (S28, YES), immediately returns to the communication line 30. If the acquired status information is different from the immediately previous status information (S21), the status information of
0, YES), and the processing from S23 is repeated. When the acquired status information has not changed from the status information immediately before (S210, NO), the processing from S28 is repeated. As in S28, the network information collecting unit 2 collects the state information of the communication line 30 at regular time intervals, and when there is a change in the collected state information, the flow determining unit determines that there is a change. 4 may be notified, the status information is always collected, and the communication line 30 collected every time the status information is collected
It is also possible to notify the flow determining unit 4 of the status information of.
The latter can improve the use efficiency of the line. Further, as in S23, only the request from the application is used as a trigger to review the data flow rate, the status information of the communication line 30 is acquired from the network information collecting unit 2 to determine the data flow rate, and thereafter, the communication is performed during the execution of the application. The status information of the line 30 may not be monitored.

For example, if the router 225 is the mobile telephone device 2
The state of the communication line 30 is shown in FIG.
When there is a change in the communication speed from a slow state as shown on the left side of FIG. 3 to a high communication rate as shown on the right side of FIG. 3, the network information collecting unit 2 notifies the flow determining unit 4 that the line state has changed. Notice. Here, a change in communication speed is notified. The flow determination unit 4 increases the data flow rate that can be communicated per unit time from the flow rate on the left side to the flow rate on the right side in FIG. 3 in response to changes in the communication speed. The communication line 30 can be effectively used by increasing the data flow rate. On the contrary, when the state of the communication line 30 changes from a state where the communication speed is high to a state where the communication speed is slow, the flow rate of data that can be communicated per unit time is controlled so as to be decreased, so that it is possible to prevent the overflow of information. Communication can be performed.

As described above, by constantly monitoring the state of the communication line 30 (first communication line) and setting the optimum data flow rate for it, even for a line whose communication speed dynamically changes, It is possible to use the line efficiently at all times. Further, in the conventional method, when the communication speed decreases on the same line, the transmission side may cause an overflow, but by using the communication control device and the communication control method of the present invention, an overflow occurs. In addition, it is possible to guarantee the QOS of the line whose security is guaranteed.

Embodiment 2. In the first embodiment, the network information collecting unit 2 monitors the status of the communication line 30 and collects the status information. However, the status of the communication line 32 is monitored by monitoring the status of the communication line 32 (second status information). (State information), the state information of the communication line 30 (first state information) and the state information of the communication line 32 (second state information) are collected.
An example of the communication control device that determines the communication path according to the change in the data flow rate will be described.

The network configuration and device configuration of the communication control device of the second embodiment are the same as those of the first embodiment shown in FIGS.
Shall be the same as. FIG. 5 is a flowchart explaining the operation of the communication control device according to the second embodiment. 5, the processing of S23, S24, and S25 is different from that of FIG. 4, and the other processing is the same as that of FIG. In S23, the state information (second state information) of the communication line 32 is acquired together with the state information (first state information) of the communication line 30 from the network information collection unit 2. Further, the route determined in S23 is the route determined based on the number of routers to relay and the communication charge as in the conventional case. FIG. 6 shows the types of communication paths. “S” is a communication device on the transmitting side, “D” is a communication device on the receiving side, and “R” is a router (white circles are also routers). The communication route from "S" to "D" is route 3.
3, 34, and 35 exist, and the route 35 is a communication route (route set by IP) selected when the communication charge is taken into consideration as in the conventional case. Routes 33 and 34 are selected according to the change in the data flow rate (route 33 is route 1 set by the proposed protocol (communication control device of the invention), and route 34 is set by the proposed protocol (communication control device of the invention). This is route 2). In S24, the data flow rate is determined based on the state information of the communication line 30 acquired from the network information collection unit 2. Further, the route is selected based on the determined data flow rate and the state information of the communication line 32 acquired from the network information collection unit 2. As shown in FIG. 6, it is assumed that the routes include routes 33 to 35. The route 35 is a route selected when the communication charge is taken into consideration as described above. Here, a route suitable for the change in the data flow rate is selected according to the change in the data flow rate. Since the communication line 32 is a public line network as described above, the communication speed does not change dynamically. Therefore, even if the data flow rate of the communication line 30 increases, the data flow rate of the communication line 32 cannot be increased accordingly. Therefore, the route determination unit 3 selects a relatively thin route, for example, a route having a small collision rate of information to be communicated or a route having a high ratio (%) of the actually flowing data rate to the physical speed of the line. Coping with increasing data flow. Therefore, the route determination unit 3 selects one of the routes 33 and 34 corresponding to the change in the data flow rate, rather than the route 35 obtained by the communication charge. For example,
The route determination unit 3 determines that the route 33 is the route 3 based on the state information of the communication line 32 acquired from the network information collection unit 2.
If the flow rate determined by the flow determination unit 4 is increased, the collision rate of the information to be communicated is smaller than that of No. If yes, the route 33 is selected. In S25, the communication control device is set so that information is communicated through the route determined by the route determination unit 3.

As described above, the communication line can be used more efficiently by selecting the route in accordance with the change in the data flow rate.

As described above, in the second embodiment, I
In a communication line whose communication speed dynamically changes such as MT2000, a route connection request management unit that manages a route connection request from an application (AP) layer, and a network information collection unit that monitors a communication route provided by the IP layer. , A route determination unit that determines the optimal route, a flow determination unit that determines the optimal data flow rate according to the route condition, a route setting unit that sets the route determined by the route determination unit, and a flow rate setting The request from the flow setting unit and the application
P and UDP or TCP to decide whether to pass directly to IP
/ UDP use decision unit, which guarantees an optimum data flow rate even if the communication speed dynamically changes, thereby efficiently using the line. An example was explained.

Embodiment 3. In the third embodiment, the network information collecting unit 2 stores the items of information to be monitored and collects the state of the communication line 30, sets a threshold for each item, and sets the line state when the set threshold is exceeded. An example of determining that has changed will be described.

FIG. 7 shows the configuration of the network information collecting unit 2 according to the third embodiment.
Includes a collection item storage unit 40 (first collection item storage unit) that stores items of information to be collected by monitoring the state of the communication line 30 and a threshold value for each item. Others are the same as that of FIG.
FIG. 8 shows the communication line 30 stored in the collection item storage unit 40.
FIG. 6 is a diagram showing an example of items of information to be monitored and collected and the threshold value set for each item. For example, the "communication speed" indicates that the collected status information is "+10" with respect to the immediately preceding communication speed.
% "And"-"for the previous communication speed
It is set that there is a change in the state of the communication line 30 when it is later than 10%. Further, it is set that the state of the communication line 30 has changed when the “collision (number of times of information collision)” exceeds “80%” with respect to the immediately preceding state information. Also, "performance"
(“Performance” here is the ratio of the actual data rate flowing to the physical rate of the line (%)),
It is set that the state of the communication line 30 has changed when the performance is smaller than "60%" with respect to the immediately previous state information.

The network information collecting unit 2 is S in FIG. 4 of the first embodiment and FIG. 5 of the second embodiment.
When there is a change in the state information of the communication line 30 collected in 28, the flow determining unit 4 is notified of the change. In the third embodiment, the network information collection unit 2 includes a collection item storage unit 40 that stores items and thresholds as shown in FIG. 8, and displays the status information of the communication line 30 for the items having the contents described in FIG. collect. Then, each collected state information is compared with the corresponding threshold value. As a result of the comparison, when it is determined that the status information of the communication line 30 has changed, the flow determining unit 4 is notified of the collected status information. The flow determining unit 4 uses the network information collecting unit 2
The data diversion on the communication line 30 is determined based on the status information notified from the. It should be noted that the determination as to whether the status information of the communication line 30 has changed or has not changed may be judged to have been changed if all the items stored in the collection item storage unit 40 satisfy the threshold values. It may be determined that there is a change when the threshold of at least one of the items is satisfied.

As described above, the network information collecting unit is adapted to the mounting system and the mounting computer in order to manage the items of the information information obtained by monitoring the state of the communication line and the thresholds corresponding to the items by the table. The threshold can be easily set.

Fourth Embodiment In the fourth embodiment, the network information collecting unit 2 stores the items of information to monitor and collect the state of the communication line 32, sets a threshold for each item, and sets the line state when the set threshold is exceeded. An example of determining that has changed will be described.

The items and threshold values stored in the collection item storage unit 40 described in the third embodiment are used as the communication line 32.
Shall be used to collect the status information of. The network information collecting unit 2 collects the status information of the communication line 32 for the items having the contents described in FIG. Then, each collected state information is compared with the corresponding threshold value. As a result of the comparison, when it is determined that the status information of the communication line 32 has changed, the collected status information is notified to the route determination unit 3. The route determining unit 3 determines the communication line 3 based on the status information notified from the network information collecting unit 2.
Review the communication route on 2 and select a new route. The determination as to whether or not the status information of the communication line 32 has changed is made in FIG.
And in S210 of FIG. 5, the communication line 3 in S210.
When it is determined that the state information of 2 has changed, the process branches to S23, and the route of the communication line 32 is reviewed in S23.

The network information collecting unit 2 is provided with one collection item storage unit 40, and the one provided is used both for collecting the state information of the communication line 30 and for collecting the state information of the communication line 32. Was. However, the collection item storage unit may be separately provided for collecting status information of the communication line 30 and for collecting status information of the communication line 32. By providing them separately, it becomes possible to set different items for the items monitored for each line. Also, the threshold value can be set for each line.

Further, the network information collecting unit 2 collects the information stored in the collection item storage unit only when collecting the state information of the communication line 30 when monitoring the state of the communication line and collecting the state information. Use the information stored in the collection item storage unit only when collecting the state information of the communication line 32, or collect the state information of both the communication line 30 and the communication line 32 when collecting the state information of the communication line 32. You can either use the information stored in.

Embodiment 5. In the fifth embodiment, the information communicated between the mobile phone device 20 on the transmitting side and the mobile phone device 22 on the receiving side has type information indicating the type of information to be communicated, and for each type information An example of the communication control device that determines the data flow rate based on the required communication service will be described.

FIG. 9 is a block diagram of the communication control device according to the fifth embodiment. In FIG. 9, the communication control device newly includes a communication service request storage unit 41. The other components are the same as those in FIG. 2 of the first embodiment. FIG. 10 is a diagram showing an example of information stored in the communication service request storage unit 41. Communication service request storage unit 41
Stores the communication service information requested by the information to be communicated, corresponding to the type information included in the information communicated between the mobile phone device 20 on the transmitting side and the mobile phone device 22 on the receiving side. For example, as shown in FIG. 10, the type information included in the information communicated between the mobile phone device 20 on the transmitting side and the mobile phone device 22 on the receiving side is the application name "app.
In the case of "1", the communication service information is set to "performance" is higher than "4 Mbps", "priority" is set to "10", and "protocol" is set to "TCP", and a communication service having these contents is requested. ing. The “performance” is the ratio (%) of the actually flowing data rate to the physical speed of the line. Also, "priority" is, for example, "priority"
If a connection request is made simultaneously from an application for which "9" is set to "9" and an application for which "10" is set to "priority", the "priority" is set to "9".
The application is set to prioritize processing such as route selection and data flow determination. Further, even if the content set as the application name is the unique application name as shown in FIG. 10, for example, “video” is used for moving picture communication, “still picture” is used for still picture communication, and content is communicated for "Content" to do, "Mail" to send mail,
When a text file is communicated, a name such as "text" that represents the attribute of information to be communicated may be used. Also, for example, "TCP" for information communicated by TCP, and "UDP" for information communicated by UDP.
It may be a name that represents a communication protocol such as. Since the content set as the application name corresponds to the type information included in the communication information, the application name that can be set in the communication service request storage unit is unique if it is the type information included in the actual communication information. It can be an application name, an information attribute, or a protocol.

The flow determination unit 4 uses S24 in FIGS.
When determining the data flow rate, the state information is acquired from the network information collection unit 2 and the communication service information corresponding to the type information of the information to be communicated is acquired from the communication service request storage unit 41 to determine the data flow rate. To decide. For example, when the communication speed of the communication line 30 increases, it is assumed that connection requests are made from an application having a priority of “10” and an application having a priority of “12”. In this case, the data flow rate that satisfies the “performance” is first determined for the application having the priority “10”, and then the “performance” is satisfied for the application having the priority “12”. Such data flow rate is determined.

As described above, the communication control apparatus according to the fifth embodiment sets the request item and the priority for each application, so that the application can be operated according to the user's intention.

Sixth Embodiment In the sixth embodiment, the information communicated between the mobile phone device 20 on the transmitting side and the mobile phone device 22 on the receiving side has type information indicating the type of information to be communicated, and for each type information An example of a communication control device that determines a communication path based on a requested communication service will be described.

In the sixth embodiment, the communication control device includes a communication service request storage unit 41 as shown in FIG. 9 as in the fifth embodiment. It is assumed that the contents of the communication service request storage unit 41 are the same as those in FIG. 10 of the fifth embodiment. When determining the route in S22 of FIG. 4 and FIG. 5 and S25 of FIG. 5, the route determination unit 3 acquires the status information of the communication line 32 from the network information collection unit 2 and receives it with the mobile phone device 20 on the transmission side. The communication service information corresponding to the type information included in the information communicated with the mobile phone device 22 on the side is acquired from the communication service request storage unit 41, and the route is selected. Alternatively, the route determination unit 3 may acquire the data flow rate determined by the flow determination unit 4 in addition to the state information of the communication line 32 and the communication service information, and determine the route based on these.

As described above, the communication control apparatus according to the sixth embodiment sets the required items and the priority for each application, so that the application can be operated according to the user's intention. The communication service request storage unit may be separately provided for one for determining the data flow rate and one for determining the route.

Embodiment 7. In the first to sixth embodiments described above, the communication control device includes one each of the route determining unit, the route setting unit, the flow determining unit, and the flow setting unit. However, in order to improve the processing efficiency of the communication control device, the route determination unit, the route setting unit, the flow determination unit, and the flow setting unit are made into one block, and a plurality of the above blocks are provided in one communication control device. If each block can process in parallel, the processing efficiency of the communication control device can be improved.

[0038]

As described above, according to the present invention, since the data flow rate is adjusted for the communication line whose communication speed dynamically changes, the communication line can be effectively used. Further, when the communication speed becomes slower than the immediately preceding communication speed, it is possible to communicate without the information transmitted by the transmitting side overflowing, and the Q of the line whose safety is guaranteed.
There is an effect that the OS can be guaranteed.

Further, since the route is determined in consideration of the adjusted data flow rate, there is an effect that the communication line can be used efficiently.

Further, the item information to be collected as the first state information and the threshold value information for judging the change of the first state information corresponding to the item information are set in the first collection item storage section. Therefore, it is possible to easily set the item information and the threshold value information that are suitable for the system and the computer that implement the communication control device. Therefore, it is possible to adjust the data flow rate according to the user's intention, and as a result, it is possible to operate the application according to the user's intention.

Further, item information to be collected as the second state information and threshold value information for judging that the second state information has changed corresponding to the item information are set in the second collection item storage section. Therefore, it is possible to easily set the item information and the threshold value information that are suitable for the system and the computer that implement the communication control device. Therefore, there is an effect that the route that suits the user's intention can be selected, and as a result, the application that suits the user's intention can be operated.

Further, the communication service information and the communication service information are set in the communication service request storage unit in association with the type information of the information to be communicated, and the data flow rate determining unit sets the data based on the first state information and the communication service information. Adjust the flow rate. Therefore, it is possible to adjust the data flow rate according to the user's intention, and as a result, it is possible to operate the application according to the user's intention.

Further, the communication service information and the communication service request storage unit are set in correspondence with the type information of the information to be communicated, and the route determination unit determines the route based on the second state information and the communication service information. adjust. Therefore, it is possible to select a route that suits the user's intention, and as a result, it is possible to operate the application that suits the user's intention.

[Brief description of drawings]

FIG. 1 is a router equipped with a communication control device according to the present invention;
FIG. 3 is a configuration diagram of a network whose communication path is managed by a router.

FIG. 2 is a configuration diagram of a communication control device according to the first embodiment of the present invention.

FIG. 3 is a diagram for explaining a change in communication speed (communication band) and a change in data flow rate of the communication line 30 according to the first embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the communication control device according to the first embodiment of the present invention.

FIG. 5 is a flowchart showing the operation of the communication control device according to the second embodiment of the present invention.

FIG. 6 is a diagram showing types of communication paths according to the second embodiment of the present invention.

FIG. 7 is a diagram showing a configuration of a network information collection unit 2 according to a third embodiment of the present invention.

FIG. 8 is a collection item storage unit 4 according to the third embodiment of the present invention.
The figure which shows the example of the item of the information which monitors and collects the state of the communication line 30 memorize | stored in 0, and the threshold value set for every item.

FIG. 9 is a configuration diagram of a communication control device according to a fifth embodiment of the present invention.

FIG. 10 is a diagram showing an example of information stored in a communication service request storage unit 41 according to the fifth embodiment of the present invention.

FIG. 11 is a configuration diagram of control unit software of the information relay device of JP 2001-230805 A as a conventional example.

[Explanation of symbols]

1 route connection request management unit, 2 network information collecting unit, 3 route determining unit, 4 flow determining unit, 5 route setting unit, 6 flow setting unit, 7 TCP / UDP use determining unit, 8 UDP, 9 TCP, 10 AP layer , 11 I
P layer, 12 Physical layer, 20, 22 Mobile phone device, 24
-29 router, 30, 32 communication line, 33-35
Route, 40 collection item storage unit, 41 communication service request storage unit.

Claims (7)

[Claims] 1. A communication control device for connecting a predetermined communication device via a first communication line and communicating predetermined information with the connected predetermined communication device, wherein the first communication line has a communication speed of The communication network is a dynamically changing communication network in which a data flow rate on the first communication line changes in response to a change in the communication speed, and the communication control device includes the first communication line. A network information collecting unit that monitors the status of the first status information and collects the first status information, and determines the data flow rate on the first communication line based on the first status information collected by the network information collecting unit. And the data flow rate determined by the data flow rate determination unit
A communication control device comprising: a data flow rate setting unit for notifying the predetermined communication device and controlling communication of the predetermined information with the predetermined communication device in accordance with the data flow rate. 2. The second communication control device is a communication line different from the first communication line and has a plurality of communication paths.
The communication line is connected to communicate the predetermined information, the network information collecting unit monitors the state of the second communication line to collect second state information, and the communication control device further A predetermined communication route from the plurality of communication routes based on the data flow rate on the first communication line determined by the data flow rate determination unit and the second state information collected by the network information collection unit 2. The communication control according to claim 1, further comprising: a route determining unit that selects a route, and a route setting unit that controls communication of the predetermined information according to the predetermined communication route determined by the route determining unit. apparatus. 3. The network information collecting unit, whether or not there is a change in the item information indicating the contents to be collected as the first state information and the first state information collected in association with the item information. Storing threshold information for determining
Of the item information stored in the first collection item storage unit, the first state information is collected and compared with the threshold information, and there is a change in the first state information. In the case of a failure, the data flow rate determination unit is notified of the first status information, or
2. The communication control device according to item 2. 4. The network information collecting unit, whether or not there is a change in the item information indicating the contents to be collected as the second state information and the second state information collected in association with the item information. A second information storing threshold information for determining
Of the item information stored in the second collection item storage unit, the second state information is collected and compared with the threshold information, and there is a change in the second state information. The communication control device according to any one of claims 1 to 3, wherein in the case of being informed, the route determination unit is notified of the second state information. 5. The predetermined information includes type information indicating a type of information to be communicated, and the communication control device further includes the type information of the predetermined information and the type information in association with the type information. A communication service request storage unit that stores communication service information indicating the communication service content requested by the communication service information storage unit, wherein the data flow rate determination unit corresponds to the communication service information corresponding to the type information of the first state information and the predetermined information. 5. The communication control device according to claim 1, wherein the data flow rate on the first communication line is determined based on 6. The predetermined information includes type information indicating a type of information to be communicated, and the communication control device further corresponds to the type information of the predetermined information and the type information. A communication service request storage unit that stores communication service information indicating the communication service content requested by the first communication line, the route determination unit, the data flow rate on the first communication line, the second state information, and the predetermined value. The communication control device according to claim 2, wherein a predetermined communication path is selected from the plurality of communication paths based on communication service information corresponding to information type information. 7. A communication control method for communicating predetermined information with a predetermined communication device connected via a predetermined communication line, wherein the predetermined communication line is a communication network whose communication speed dynamically changes. A communication network in which a data flow rate on the predetermined communication line changes in response to a change in the communication speed, and the communication control method monitors the state of the predetermined communication line to collect state information. A network information collecting step, a data flow rate determining step of determining a data flow rate on the predetermined communication line based on the state information collected by the network information collecting step, and a data flow rate determined by the data flow rate determining step. A data flow rate setting step of notifying the predetermined communication device and controlling communication of the predetermined information with the predetermined communication device in accordance with the data flow rate. Communication control method characterized in that it comprises a.