JP2004235862A - Communication controller, communication control method, and communication control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a communication controller, a communication control method, and a communication control program, which can set communication environments meeting users' requests. <P>SOLUTION: In a communication controller 70, a used protocol detection part 80 detects protocols which a mobile terminal 60 uses, when a reception part 78 receives ready signals transmitted from radio base stations 50A, 50B, and 50C. Communication control corresponding to protocols detected by the used protocol detection part 80 is performed by a communication control part 82 on the basis of protocol setting information in a database 73A stored in a storage part 72. That is, a communication environment desired by a user is previously stored in the storage part 72 as protocol setting information, and a communication environment is controlled in accordance with the protocol setting information when the mobile terminal 60 is handed over, so that the communication environment meeting the user's request can be set. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a communication control device, a communication control method, and a communication control program used for controlling a communication terminal.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when a mobile terminal such as a notebook personal computer performs network switching (handover), the IP address of the mobile terminal changes with the handover. Later mobile terminals could not receive the packet. In recent years, Mobile-IP technology has been proposed as a means for solving such a problem.
[0003]
This Mobile-IP technology (hereinafter referred to as “mobile IP”) is a technology that gives a permanent IP home address to a mobile terminal and transfers a packet addressed to the IP home address even if the mobile terminal performs handover. It is a technology for correctly delivering to The mobile IP includes a "home agent (HA)" which is a router connected to a home network of a mobile terminal, and a "foreign agent (FA)" which is a router connected to a network (external network) other than the home network. Are used. The mobile terminal to which the IP home address is assigned transmits a care-of address indicating its current network location to the HA at the timing of handover to the external network to which the FA is connected, and sends the IP home address to the care-of address. The HA sends a packet addressed to the address (addressed to the mobile terminal). This allows the mobile terminal to receive the packet delivered to the IP address before the handover even when the mobile terminal performs a handover. Technologies related to such mobile IP are disclosed in, for example, Patent Documents 1 and 2 below.
[0004]
[Patent Document 1]
JP 2000-341339A
[Patent Document 2]
JP 2001-358776 A
[0005]
[Problems to be solved by the invention]
Since the above-described mobile IP is a technology for maintaining communication seamlessly at the time of handover of a communication terminal, the following problems exist in the communication terminal applied to the mobile IP. That is, since the communication settings of the network before the handover are applied to the communication settings of the network after the handover, it is not possible to make detailed settings for each network.
[0006]
More specifically, the fee structure of various networks is broadly divided into a pay-as-you-go system and a fixed-rate system, but a handover is performed while a large amount of data is being received (for example, video streaming), and the user is required to pay a fee. If the network being used changes from a fixed system to a pay-as-you-go system, the user will have to pay a large fee.
[0007]
Also, in many cases, the devices used for communication at the time of handover change, but these devices consume different powers. Therefore, when the remaining battery power is low, use a device with high power consumption and connect with the device. The user wants to refrain from accessing the network being created.
[0008]
Nevertheless, the conventional communication control device for a communication terminal has a problem that sufficient consideration is not given to flexibly changing a communication environment to various needs of a user.
[0009]
SUMMARY An advantage of some aspects of the invention is to provide a communication control device, a communication control method, and a communication control program capable of setting a communication environment according to a user's request.
[0010]
[Means for Solving the Problems]
A communication control device according to the present invention is a communication control device that controls a plurality of networks and a communication terminal capable of communicating via a wireless base station of each network. Storage means for storing protocol setting information in which continuous connection / disconnection of the corresponding communication is set, and a ready signal indicating that handover to a network to which the wireless base station is possible is received from the wireless base station Receiving means for receiving, when the receiving means receives the ready signal, the used protocol detecting means for detecting the protocol used by the communication terminal, and the detected protocol detected by the used protocol detecting means based on the protocol setting information stored in the storing means. Communication control means for controlling continuous connection / disconnection of communication corresponding to the specified protocol.
[0011]
In this communication control device, when the receiving unit receives the ready signal transmitted from the wireless base station, the used protocol detecting unit detects the protocol used by the communication terminal. Then, communication control corresponding to the protocol detected by the used protocol detection unit is performed by the communication control unit based on the protocol setting information stored in the storage unit. In other words, by storing the communication environment desired by the user in advance in the storage means as protocol setting information, when the communication terminal is handed over, the communication environment according to the protocol setting information is controlled. The communication environment can be set according to the request.
[0012]
The communication device further includes an input unit that receives a protocol setting of each network input by a user, and a registration unit that registers or overwrites protocol setting information based on the protocol setting received by the input unit in a storage unit. The control means preferably controls the continuous connection / disconnection based on the protocol setting information registered or overwritten by the registration means. In this case, the user can appropriately register or update the protocol setting information by inputting the protocol setting to the input unit.
[0013]
Further, when the receiving means receives the ready signal, the receiving means further comprises a network identifying means for identifying a network capable of handover, and the input means further comprises a network setting which is set by the user to be used / not used for each network. The receiving and registering means registers or overwrites network setting information based on the network setting received by the input means in the storing means, and when the communication control means controls disconnection based on the protocol setting information, When the network identified by the network identification unit is set to be used based on the network setting information stored in the storage unit, the communication control unit communicates the communication corresponding to the protocol detected by the usage protocol detection unit. It is preferable to connect continuously In this case, even if the protocol is disconnected by the communication control means based on the protocol setting information, by setting the handover destination network to be used, the protocol can be used for a specific network (for example, a flat-rate network). Is maintained.
[0014]
The input means receives a file type setting indicating whether or not each file type of the file to be downloaded to the communication terminal by each protocol is input by the user, and the registration means receives the file received by the input means. The file type setting information based on the type setting is registered or overwritten in the storage unit, and the communication control unit detects the file type of the file, and detects the detected file based on the file type setting information stored in the storage unit. It is preferable to perform control to continue downloading the file when the type is necessary and to stop downloading the file when the detected file type is unnecessary. In this case, since download control can be performed for each file type, it is possible to flexibly cope with a communication environment requested by the user.
[0015]
A communication control method according to the present invention is a communication control method applied to a communication control device that controls a plurality of networks and a communication terminal capable of communicating via a wireless base station of each network, wherein the communication terminal is connected to the network. The protocol setting information in which the continuous connection / disconnection of the communication corresponding to each protocol used for the communication is set is stored in the storage means, and the receiving means transfers from the wireless base station to the network to which the wireless base station is connected. Receiving a ready signal indicating that handover of the communication terminal is possible; detecting a protocol in use by the communication terminal when the receiving means receives the ready signal; The protocol setting information detected by the used protocol detecting means is determined based on the protocol setting information stored in the means. And a step of controlling the continuous connection / disconnection of the communication to be.
[0016]
In this communication control method, when a receiving unit receives a ready signal transmitted from a wireless base station, a used protocol detecting unit detects a protocol used by a communication terminal. Then, communication control corresponding to the protocol detected by the used protocol detection unit is performed by the communication control unit based on the protocol setting information stored in the storage unit. In other words, by storing the communication environment desired by the user in advance in the storage means as protocol setting information, when the communication terminal is handed over, the communication environment according to the protocol setting information is controlled. The communication environment can be set according to the request.
[0017]
The communication control program according to the present invention comprises: a receiving unit for receiving, from the radio base station, a ready signal indicating that handover to a network to which the radio base station is connected is possible; Then, a used protocol detecting means for detecting a protocol used by the communication terminal, and a protocol stored in the storage means and set for continuous connection / disconnection of communication corresponding to each protocol used by the communication terminal for communication with the network. On the basis of the setting information, it is made to function as communication control means for controlling continuous connection / disconnection of communication corresponding to the protocol detected by the used protocol detection means.
[0018]
When the receiving unit receives the ready signal transmitted from the wireless base station by executing the communication control program using a computer, the used protocol detecting unit detects a protocol used by the communication terminal. Then, communication control corresponding to the protocol detected by the used protocol detection unit is performed by the communication control unit based on the protocol setting information stored in the storage unit. In other words, by storing the communication environment desired by the user in advance in the storage means as protocol setting information, when the communication terminal is handed over, the communication environment according to the protocol setting information is controlled. The communication environment can be set according to the request.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of a communication control device, a communication control method, and a communication control program according to the present invention will be described in detail with reference to the accompanying drawings. Note that the same or equivalent elements are denoted by the same reference numerals, and a description thereof will be omitted if the description is duplicated.
[0020]
As shown in FIG. 1, a communication system 10 includes three foreign agents (FAs) connected to the Internet (public IP network) NW. ₁ , FA ₂ , FA ₃ ) 20A, 20B, 20C, a home agent (HA) 30, and an Internet service provider (ISP) 40.
[0021]
The three foreign agents 20A, 20B, and 20C are a kind of router, and three kinds of external networks NW1, NW2, and NW3 are connected to the Internet NW via the foreign agents 20A, 20B, and 20C. Note that the network NW1 is a wireless LAN communication network, the network NW2 is a next-generation mobile communication network (for example, FOMA (registered trademark of NTT DOCOMO) network), and the network NW3 is a simple mobile phone (PHS) network.
[0022]
Each of the external networks NW1, NW2, and NW3 has a radio base station (BS) for a user's mobile terminal (communication terminal) 60 to perform radio connection. ₁ , BS ₂ , BS ₃ ) 50A, 50B, 50C are connected. The mobile terminal 60 is a mobile IP-compatible notebook personal computer, includes three communication devices (not shown) of a wireless LAN device, a FOMA device, and a PHS device, and has a built-in communication control device (not shown) to be described later. ing. The mobile terminal 60 transmits a care-of address to the home agent 30 when switching between the radio base stations 50A, 50B, and 50C and performing handover between the external networks NW1, NW2, and NW3. This care-of address is an IP address obtained from the foreign agent 20A, 20B, 20C when the mobile terminal 60 performs a handover between the external networks NW1, NW2, NW3, and by referring to the network prefix part of this IP address. The respective networks NW1, NW2, NW3 are distinguished from each other.
[0023]
The home agent 30 is a kind of router like the foreign agents 20A, 20B, and 20C, receives a packet transmitted to an IP home address unique to the mobile terminal 60, and connects to the external networks NW1, NW2, and NW3. It transfers to the mobile terminal 60 which was done. When transferring, the home agent 30 uses the care-of address received from the mobile terminal 60.
[0024]
According to the mobile IP in cooperation with the foreign agents 20A, 20B, 20C and the home agent 30 connected to the Internet NW, when the mobile terminal 60 performs a handover between the external networks NW1, NW2, and NW3, the external network NW1 , NW2, and NW3, obtains a care-of address from the foreign agents 20A, 20B, and 20C, notifies the home agent 30 of the care-of address, and forwards the data addressed to the IP home address to the home agent 30, so that the mobile terminal 60 can receive the data via foreign agents 20A, 20B, 20C.
[0025]
The ISP 40 is a server device that provides network services such as Web browsing, e-mail distribution, and file exchange service to the mobile terminal 60 via the Internet NW and the networks NW1, NW2, and NW3. That is, communication is performed between the ISP 40 and the mobile terminal 60 using various communication protocols such as the HTTP protocol.
[0026]
Next, a communication control device built in the mobile terminal 60 will be described with reference to FIG.
[0027]
As shown in FIG. 2, the mobile terminal 60 includes a wireless LAN device D1 (for example, a wireless LAN card) capable of communicating with the wireless base station 50A, and a FOMA device D2 (for example, capable of communicating with the wireless base station 50B). , A FOMA card) and a PHS device D3 (for example, a PHS card) capable of communicating with the wireless base station 50C, and a communication control device 70 is built in. . The mobile terminal 60 has a temporary storage unit 62 for information transmitted and received between the radio base stations 50A, 50B, and 50C and the mobile terminal 60.
[0028]
The communication control device 70 includes, as functional components, a storage unit (storage unit) 72, an input unit (input unit) 74, a registration unit (registration unit) 76, a reception unit (reception unit) 78, and a use protocol detection unit (use A protocol detection unit) 80, a communication control unit (communication control unit) 82, and a network identification unit (network identification unit) 84. The mobile terminal 60 and the communication control device 70 mainly include a CPU (central processing unit), a storage device such as a hard disk and a memory, a display device such as a liquid crystal display, a data transmission / reception device, and the like as physical components. Sharing.
[0029]
The storage unit 72 stores three databases 73A, 73B, and 73C. As shown in FIG. 3, the database 73A stores protocol setting information in which four items of a protocol D11, a service type D12, a port number D13, and a setting D14 are associated with each other. The protocol D11 indicated by "HTTP" or "SMTP" is information indicating the type of communication protocol used in the networks NW1, NW2, and NW3. The service type D12 indicated by “Web browsing” or “mail transfer” is information indicating the type of service provided from the ISP 40 using the protocol D11. The port number D13 is information indicating a port number corresponding to the protocol D1 on a one-to-one basis. The setting D14 is an item indicating the setting of communication control corresponding to the protocol D11 at the time of the handover of the mobile terminal 60, and is either continuous connection (o) or disconnection (x). According to the example of FIG. 3, the communication corresponding to the SMTP, POP3, FTP, and HTTPS protocols is set to be cut off at the time of handover, while the communication connection is maintained even if handover is performed, and the communication corresponding to the HTTP and Telnet protocol is maintained. It has become.
[0030]
As shown in FIG. 4, the database 73B stores five items of a network D21, a charging method D22, a setting D23 according to the charging method, a disconnected battery amount D24, and a setting D25 according to the battery amount in association with each other. . The network D21 indicated by “NW1” or “NW2” is identification information of the networks NW1, NW2, and NW3 with which the mobile terminal 60 communicates. The billing method D22 indicated by the "fixed amount" and the "metered amount" is information indicating the billing method of each network of the network D21, and is set by the user. The setting D23 according to the charging method is an item indicating the setting of control of communication between the mobile terminal 60 and the network D21 at the time of handover, which is set by the user based on the charging method D22. And cutting (x). According to the example of FIG. 4, when handover is performed to the network NW1 and the network NW3, the communication connection is maintained, and when handover is performed to the network NW2, the communication is disconnected.
[0031]
The disconnection battery amount D24 is performed when the battery amount of the mobile terminal 60 becomes less than or equal to when the communication between the mobile terminal 60 and the network D21 is controlled based on the battery amount of the mobile terminal 60. Numerical information indicating whether or not this is set by the user. The setting D25 based on the battery amount indicates whether the communication between the mobile terminal 60 and the network D21 is continuously connected or disconnected when the remaining battery level of the mobile terminal 60 is equal to or less than the disconnected battery amount at the time of handover. This item is either continuous connection (o) or disconnection (x). This item D25 is also set by the user. According to the example of FIG. 4, when the handover is performed in a state where the remaining battery level of the mobile terminal 60 is 30% or less, if the handover destination is the network NW1 or the network NW2, the communication is cut off and the handover is performed. When the destination is the network NW3, the communication connection is set to be continued.
[0032]
As shown in FIG. 5, the database 73C stores a plurality of pieces of file setting information in which three items of a file type D31, an extension D32, and a setting D33 are associated with each other for each protocol D11 of the database 73A. Have been. FIG. 5 shows file setting information of the HTTP protocol. The file type D31 indicated by “program” or “CAD” is information indicating the type of a file downloaded from the networks NW1, NW2, and NW3 to the storage unit 62 of the mobile terminal 60 according to the HTTP protocol. The extension D32 indicated by “.exe” or “.xxx” indicates an extension unique to the file type D31, and the extension can identify the type of the file. The setting D33 is an item for setting control of a file downloaded by the HTTP protocol when the mobile terminal 60 performs handover. This item is set by the user, and the download is continued (O) and the download is stopped (X). It has become either. According to the example of FIG. 5, even if the communication by the HTTP protocol is disconnected (×) in the database 73A, the setting is such that the download of the CAD file or the PDF (Portable Document Format) file is continued. The “file type” used in this specification indicates a group name of a file group that is classified according to the type of data (program data, CAD data, and the like) contained in the file.
[0033]
The input unit 74 is a unit that receives various data such as protocol settings, network settings, and file type settings input by the user. Here, the protocol setting is information required to supplement the item of the setting D14 of the database 73A described above. The network setting is information required to supplement the items of the setting D23 according to the charging method, the disconnected battery amount D24, and the setting D25 according to the battery amount in the database 73B. Further, the file type setting is information required to supplement the item of the setting D33 of the database 73C.
[0034]
At the time of input, it is preferable to output the screens shown in FIGS. 6 to 9 to the display device of the mobile terminal 60 so that the user can smoothly input the protocol settings, network settings, and file type settings. FIG. 6 shows an input screen for protocol setting. When the user checks a user setting corresponding to a specific protocol, items of the setting D14 of the database 73A are supplemented so as to correspond to the check. FIG. 7 shows an input screen for network setting. The user checks the billing method (fixed amount / consumption) of each network and the user setting corresponding to a specific network so that the user can respond to the check. The items of the charging method D22 and the setting D23 according to the charging method in the database 73B are supplemented. FIG. 8 is an input screen for network setting similarly to FIG. 7, and the item of the disconnected battery amount D24 in the database 73B is supplemented by inputting the numerical value of the disconnected battery amount, and the disconnection setting (perform / By selecting (No), the item of the setting D25 by the battery amount in the database 73B is supplemented so as to correspond to the setting. FIG. 9 shows an input screen for setting the file type. When the user checks the user setting corresponding to the specific file type, the items of the setting D33 of the database 73C are supplemented so as to correspond to the check. .
[0035]
The registration unit 76 registers the protocol setting received by the input unit 74 in the database 73A as protocol setting information, registers the network setting received by the input unit 74 in the database 73B as network setting information, and receives the protocol setting by the input unit 74. The file type setting is registered in the database 73C as file type setting information. Here, “registration” indicates, for example, a process of supplementing each item of the databases 73A, 73B, and 73C based on the above-described check box on the input screen. When the items of the databases 73A, 73B, and 73C have already been replenished, the registration unit 76 performs overwrite registration.
[0036]
The receiving unit 78 receives a ready signal transmitted by wireless communication from the wireless base stations 50A, 50B, 50C. This ready signal is a signal transmitted from any one of the radio base stations 50A, 50B, 50C, the home agent 30, and the foreign agent 20A, 20B, 20C, and is a signal between the mobile terminal 60 and specific networks NW1, NW2, and NW3. This is a signal transmitted to the mobile terminal 60 from the wireless base stations 50A, 50B, 50C connected to the networks NW1, NW2, NW3 when communication becomes possible between them. The receiving unit 78 may appropriately use the wireless communication function of the mobile terminal 60.
[0037]
The used protocol detector 80 detects a protocol used by the mobile terminal 60 when the receiver 78 receives the ready signal. The used protocol detection unit 80 monitors the port number of the packet group received by the mobile terminal 60 to detect the protocol being used. Then, a protocol corresponding to the port number detected from the packet group is detected as a protocol during communication. When associating the protocol with the port number, the protocol D11 and the port number D13 of the database 73A may be referred to, and the same as the protocol D11 and the port number D13 provided in the used protocol detection unit 80. A reference table may be used. In mobile IP, all IP communications are generally performed via dedicated client software. Therefore, the transport layer of TCP / IP can be identified by the client software, so that the protocol can be identified from the usage status of the port.
[0038]
The communication control unit 82 controls connection continuation / disconnection of communication of the mobile terminal 60 including file download. Specifically, the communication control unit 82 controls continuous connection / disconnection of communication corresponding to the protocol being used and control of continuation / stop of download of the file being downloaded. The control of connection continuation / disconnection is based on three databases 73A, 73B, 73C stored in the storage unit 72, namely, protocol setting information, network setting information, and file type setting information.
[0039]
More specifically, the communication control unit 82 refers to the database 73A, confirms the setting D14 of the protocol detected by the used protocol detecting unit 80, and controls communication corresponding to the protocol according to the setting D14. Do it. Further, the communication control unit 82 refers to the database 73B to check the charging method D22 of the network identified by the network identifying unit 84 and the setting D23 according to the charging method, and according to the items D22 and D23, the communication with the network. The communication with the terminal 60 is controlled. Further, after detecting the remaining battery level of the mobile terminal 60, the communication control unit 82 checks the disconnected battery level D24 and the setting D25 based on the battery level with reference to the database 73B, and according to those items D24 and D25, the network identifying unit. The communication between the network identified by 84 and the mobile terminal 60 is controlled. Before executing the above-described communication control, the communication control unit 82 detects the file type of the file being downloaded to the storage unit 62 of the mobile terminal 60, checks the setting D33 by referring to the database 73C, The download of the file being downloaded is controlled according to the setting D33.
[0040]
It is preferable that the control of communication continuation / disconnection and the download control are performed by the client software described above. These controls can be appropriately performed by on / off control of the communication devices D1, D2, and D3. Further, when controlling communication disconnection and stopping download, the communication control unit 82 displays a confirmation message (for example, “Are you sure you want to disconnect?”) On the display of the mobile terminal 60, and These controls may be performed after the approval of the user is obtained.
[0041]
When the receiving unit 78 receives the ready signal, the network identifying unit 84 identifies the networks NW1, NW2, and NW3 that can communicate with the mobile terminal 60. More specifically, for example, when the mobile terminal 60 is communicating with the network NW1 and receives a ready signal from the radio base station 50B of the network NW2, the network NW2 is identified. The network identification unit 84 performs this identification based on the operation status of the communication devices D1, D2, and D3 mounted on the mobile terminal 60. That is, for example, when the communication device that has received the ready signal is the FOMA device D2, the network identification unit 84 identifies the communication device as the network NW2 of the FOMA network.
[0042]
Next, a method of controlling communication of the mobile terminal 60 at the time of handover of the mobile terminal 60 using the above-described communication control device 70 will be described with reference to FIGS. 10 and 11. The case where the mobile terminal 60 performs a handover from the network NW1 to the network NW2 will be described as an example.
[0043]
Databases 73A, 73B, and 73C are stored in the storage unit 72 in advance by a user's input to the input unit 74. As shown in the flowchart of FIG. 10, when the user inputs the protocol setting, the network setting, and the file type setting to the input unit 74 (S10), the protocol setting is set as the protocol setting information in the database 73A as shown in the flowchart of FIG. Then, the network setting is registered (or overwritten) in the database 73C as the network setting information and the file type setting in the database 73C as the file type setting information.
[0044]
As shown in the flowchart of FIG. 11, when the mobile terminal 60 communicating with the network NW1 enters a state in which communication with the network NW2 is possible, the receiving unit 78 receives a ready signal transmitted from the radio base station 50B. Receive (S20). When the receiving unit 78 receives the ready signal, the used protocol detecting unit 80 detects a protocol (for example, HTTP) used by the mobile terminal 60 (S22). Then, the communication control unit 82 checks the setting of the detected protocol in the database 73A (S24), and when “continuous connection (○)” is indicated, sets the setting based on the battery amount of the mobile terminal 60 in the database 73B. Is confirmed (S26).
[0045]
In the confirmation (S24) by the database 73A of the communication control unit 82, if it is "disconnected (x)", the network identification unit 84 identifies the handover destination network NW2 (S28) and then identifies the handover destination network NW2. The communication control unit 82 confirms the setting by the network charging method in the database 73B (S30). If the setting by the charging method of the network NW2 of the handover destination is “continuous connection (接 続)”, the communication control unit 82 confirms the setting based on the battery amount described above (S26). When the setting based on the battery amount is confirmed and the remaining battery level of the mobile terminal 60 is equal to or more than the disconnected battery amount D24, or when the setting D25 based on the battery amount is “continuous connection (○)”, the usage is determined. The continuous connection of the communication by the HTTP protocol detected by the protocol detection unit 80 is performed. However, the communication control unit 82 checks the file type of the file being downloaded to the storage unit 62 of the mobile terminal 60 in the database 73C, and checks the file type of the file whose setting D33 is set to “download abort (×)”. The download of the file is stopped even if the file is transmitted by the HTTP protocol (S32).
[0046]
The setting by the charging method of the network NW2 of the handover destination is confirmed (S30), and when the setting is "disconnection (x)", and the setting by the battery amount of the communication control unit 82 is confirmed (S26). If the remaining battery level of the mobile terminal 60 is equal to or less than the disconnected battery level D24 and the setting D25 based on the battery level in the database 73B is “disconnected (×)”, the HTTP protocol detected by the usage protocol detecting unit 80 is used. Disconnect communication by. However, the communication control unit 82 checks the file type of the file being downloaded to the storage unit 62 of the mobile terminal 60 in the database 73C, and determines the file type of the file whose setting D33 is set to “download continuation (O)”. The download of the file is continued even if the file is transmitted by the HTTP protocol (S34).
[0047]
As described above in detail, in the communication control device 70, when the communication environment desired by the user is stored in the storage unit 72 in advance as the protocol setting information, the handover of the mobile terminal 60 is performed. Since the communication environment is controlled according to the protocol setting information, the communication environment can be set according to the user's request. Further, by using the network setting information as the communication environment desired by the user, even if the protocol is disconnected based on only the protocol setting information, the specific network set by the user (for example, a fixed-rate network) Regarding (2), since communication connection corresponding to the protocol is maintained, a more detailed communication environment can be set according to the user's request. Further, by using the file type setting information as the communication environment desired by the user, the communication control device 70 can control not only the control for each protocol and the control for each network but also the download (communication) control according to the file type. This makes it possible to set a more detailed communication environment according to the user's request.
[0048]
Lastly, a communication control program according to the embodiment of the present invention will be described. The communication control program is appropriately stored in a recording medium such as a magnetic disk, an optical disk, a CD-ROM, and a memory built in a computer, and is provided to a terminal device via a network.
[0049]
FIG. 12 is a configuration diagram of the communication control program 100 according to the embodiment of the present invention. As shown in FIG. 12, the communication control program 100 includes a main module 102 for controlling processing, a receiving module 104 for receiving ready signals from the radio base stations 50A, 50B, 50C, and a protocol used by the mobile terminal 60. And a communication control module 108 for controlling communication corresponding to the detected protocol.
[0050]
Here, the function realized by executing the communication control program 100 using a computer and operating each of the receiving module 104, the used protocol detecting module 106, and the communication control module 108 is the receiving unit 78 of the communication control device 70. , And the respective functions of the used protocol detector 80 and the communication controller 82 are the same.
[0051]
In the communication control program 100 according to the embodiment of the present invention, when handover of the mobile terminal 60 is performed by preparing a communication environment desired by the user in advance in the format of the above-described protocol setting information, Since the communication environment is controlled according to the protocol setting information, the communication environment is set according to the user's request.
[0052]
【The invention's effect】
According to the present invention, a communication control device, a communication control method, and a communication control program capable of setting a communication environment according to a user request are provided.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of a communication system according to an embodiment of the present invention.
FIG. 2 is a system configuration diagram showing a communication control device of the communication terminal of FIG. 1;
FIG. 3 is a diagram showing a configuration of a database of FIG. 2;
FIG. 4 is a diagram showing a configuration of a database of FIG. 2;
FIG. 5 is a diagram showing a configuration of a database of FIG. 2;
FIG. 6 is a diagram showing an example of a protocol setting input screen.
FIG. 7 is a diagram illustrating an example of an input screen for network settings.
FIG. 8 is a diagram showing an example of an input screen for network settings.
FIG. 9 is a diagram showing an example of a file type setting input screen.
FIG. 10 is a flowchart showing a procedure of user setting.
FIG. 11 is a flowchart showing a procedure in which communication control is performed by a communication control device based on a user setting.
FIG. 12 is a diagram showing a recording medium according to an embodiment of the present invention.
[Explanation of symbols]
50A, 50B, 50C wireless base station, 60 mobile terminal, 62 storage unit, 70 communication control unit, 72 storage unit, 73A, 73B, 73C database, 74 input unit, 76 registration unit, 78 ... Receiving unit, 80 ... Used protocol detecting unit, 82 ... Communication control unit, 84 ... Network identification unit, 100 ... Communication control program, NW1, NW2, NW3 ... Network.

Claims (6)

A plurality of networks, a communication control device that controls a communication terminal that can communicate via a wireless base station of each network,
Storage means for storing protocol setting information in which continuous connection / disconnection of communication corresponding to each protocol used by the communication terminal for communication with the network is set;
From the radio base station, receiving means for receiving a ready signal indicating that handover to the network to which the radio base station is connected is possible,
When the receiving means receives the ready signal, a use protocol detection means for detecting the protocol being used by the communication terminal,
A communication control unit that controls continuous connection / disconnection of communication corresponding to the protocol detected by the use protocol detection unit based on the protocol setting information stored in the storage unit. Input means for receiving a protocol setting of each network input by a user,
Registering means for registering or overwriting the protocol setting information based on the protocol setting received by the input means in the storage means,
2. The communication control device according to claim 1, wherein the communication control unit controls the continuous connection / disconnection based on the protocol setting information registered or overwritten by the registration unit. 3. When the receiving means receives the ready signal, further comprising network identification means for identifying the network capable of handover,
The input unit further receives a network setting in which use / non-use of each of the networks is set by the user,
The registering means registers network setting information based on the network setting received by the input means in the storage means or overwrite registration,
When the communication control means controls disconnection based on the protocol setting information, the communication control means, based on the network setting information stored in the storage means, has been identified by the network identification means The communication control device according to claim 2, wherein when the network is set to be used, communication corresponding to the protocol detected by the used protocol detection unit is continuously connected. The input unit receives a file type setting indicating whether or not each file type of the file to be downloaded to the communication terminal according to each of the protocols is input by the user.
The registration unit registers or overwrites file type setting information based on the file type setting received by the input unit in the storage unit,
The communication control unit detects the file type of the file and, based on the file type setting information stored in the storage unit, continues downloading the file if the detected file type is necessary. 4. The communication control device according to claim 2, wherein when the detected file type is unnecessary, a control to stop downloading the file is performed. 5. A communication control method applied to a communication control device that controls a plurality of networks and a communication terminal capable of communicating via a wireless base station of each of the networks,
Protocol setting information in which continuous connection / disconnection of communication corresponding to each protocol used by the communication terminal for communication with the network is stored in storage means,
Receiving means for receiving, from the radio base station, a ready signal indicating that handover to the network to which the radio base station is connected is possible;
When the used protocol detecting means receives the ready signal, the receiving means detects the protocol used by the communication terminal,
Communication control means for controlling continuous connection / disconnection of communication corresponding to the protocol setting information detected by the used protocol detection means based on the protocol setting information stored in the storage means. , Communication control method. Computer
Receiving means for receiving from the wireless base station a ready signal indicating that handover to the network to which the wireless base station is possible is possible,
When the receiving means receives the ready signal, a use protocol detection means for detecting the protocol being used by the communication terminal,
Based on the protocol setting information stored in the storage unit and set to the continuous connection / disconnection of communication corresponding to each protocol used by the communication terminal for communication with the network, the communication protocol detected by the used protocol detection unit. A communication control program for functioning as communication control means for controlling continuous connection / disconnection of communication corresponding to a protocol.

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