JP2013042243A - Communication control device, communication control method, and communication control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform communication while enhancing power-saving effect by switching between TCP communication and UDP communication according to data size to be transmitted/received, communication timing and a communication frequency between computers.SOLUTION: A communication control server 100 comprises: a data input module 120 for receiving input of data size, communication timing, and communication frequency of data to be transmitted to an information communication terminal 10; a communication selection module 121 for selecting whether to transmit data to the information communication terminal 10 by TCP communication or UDP communication on the basis of the dat size, timing, and frequency; and data transmission/reception module 122 for transmitting data to the information communication terminal 10 by the selected communication method at the input timing and frequency.

Description

  The present invention relates to a communication control device, a communication control method, and a communication control program for selecting a communication method for communication between computers.

  TCP (Transmission Control Protocol / Internet Protocol) and UDP (User Datagram Protocol) are known as standard protocols for the transport layer used on the Internet.

  In TCP communication, connection-type communication is performed in order to improve communication reliability. Therefore, the communication packet amount between the server and the terminal is larger than the communication by UDP. In contrast, UDP has a small amount of communication packets between the server and the terminal, but has a drawback of low reliability.

  As an example, a communication sequence when transferring data in TCP communication is as shown in FIG. That is, data transfer is performed only after repeating SYN as a connection establishment request and ACK as a response until data transfer is actually performed. After the data transfer is completed, the communication of FIN as a disconnection request and ACK as a response is repeated.

  On the other hand, the communication sequence for transferring data by UDP performs data transmission without such prior communication as SYN and ACK as shown in FIG. However, even if the transmitted data is an error, the error is not managed and the data is not retransmitted. That is, in the case of UDP, there is a problem in reliability.

  Today, when a service of a high-function mobile phone such as a smartphone is provided by SaaS (Software as a Service), communication between a smartphone as a terminal and a server is performed. In order for this service to operate properly, server information is transmitted to the terminal and terminal information is transmitted to the server, so frequent communication is always performed between the server and the terminal.

  However, if the frequency of communication between the terminal and the server is high, there is a problem that the power supply of the smartphone is significantly reduced. That is, there is a problem that the power consumption efficiency is lowered when the smartphone frequently transmits radio waves for communication.

  Therefore, a technique for reducing power consumption by reducing the frequency of communication between the server and the client device is known (Patent Document 1). This makes it possible to suppress power consumption due to communication when transmitting an image or the like. However, with this method, the data handled is limited to images.

Special table 2011-138552 gazette

  On the other hand, when communication is performed from the server to the terminal, there is a case where only the notification message is stored in the server is notified to the terminal. For example, since the message notification for the server to notify that there is a message such as a mail in the terminal only needs to be notified of the presence or absence of a message, the data size to be transmitted and received is small. Moreover, since the communication frequency for this message notification is often frequent, the reliability of one UDP packet may not be so high. For this reason, the inventors have focused on the fact that, depending on the packet size and communication frequency, using UDP communication rather than TCP communication has a higher power saving effect and may enable efficient communication.

  In view of such problems, the present invention switches power between TCP communication and UDP communication according to the data size transmitted and received between the server and the terminal, and the communication timing and frequency, thereby reducing the power saving effect. An object is to provide a communication control device, a communication control method, and a communication control program that are enhanced.

  The present invention provides the following solutions.

The invention according to the first feature is a communication control device (for example, the communication control server 100) when communicating with a computer (for example, the information communication terminal 10),
A data input module that accepts data size of data to be transmitted to the computer, timing of communication, and frequency of communication;
Based on the data size, the timing, and the frequency, a communication selection module that selects whether to transmit data to be transmitted to the computer by either TCP communication or UDP communication;
A communication control apparatus comprising: a data transmission / reception module that transmits data at the timing and the frequency to the computer by a selected communication method.

  According to the first aspect of the invention, the input of the data size of the data to be transmitted to the computer, the timing of communication, and the frequency of communication is accepted, and the data is transmitted to the computer based on the data size, timing, and frequency. It is possible to select whether to transmit data to be transmitted by TCP communication or UDP communication, and transmit the data to the computer at the timing and frequency by the selected communication method. Therefore, it is possible to enhance the power saving effect of the computer by selecting whether to perform TCP communication or UDP communication according to the characteristics of the data.

  The invention according to the first feature exhibits the same operations and effects not only in the terminal in the category of the invention but also in the method and the program.

  The invention according to the second feature is the invention according to the first feature, wherein the communication selection module further transmits data to be transmitted to the computer based on a remaining battery amount of the computer. Provided is a communication control device for selecting whether to transmit by communication or UDP communication.

  The invention according to a third feature is the invention according to the first or second feature, wherein the communication selection module further transmits data to the computer based on a radio wave intensity of the computer. Provides a communication control device that selects whether to transmit TCP by either TCP communication or UDP communication.

  According to the present invention, a communication control server that performs communication with improved power saving effect by switching between TCP communication or UDP communication according to the data size to be transmitted and received between computers and the communication timing and frequency, communication It is possible to provide a control method and a communication control program.

FIG. 1 is a sequence diagram of TCP communication. FIG. 2 is a sequence diagram of UDP communication. FIG. 3 is a configuration diagram of the communication control system 1. FIG. 4 is a functional block diagram of the communication control server 100 and the information communication terminal 10. FIG. 5 is a flowchart showing the communication method selection process. FIG. 6 is a table of a communication method selection table.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. This is merely an example, and the technical scope of the present invention is not limited to this.

[System configuration of communication control system]
FIG. 3 is a system configuration diagram of the communication control system 1 which is a preferred embodiment of the present invention. The communication control system 1 includes information communication terminals 10 a and 10 b (hereinafter simply referred to as “10”) and a communication control server 100. These devices are connected so that they can communicate with each other regardless of whether they are wireless or wired. The information communication terminal 10 may be connected to the communication control server 100 via a LAN (Local Area Network) or may be connected via a public line network 3 such as the Internet.

  The information communication terminal 10 may be a general computer called a user terminal, and is an information device or an electrical appliance having functions to be described later. The information communication terminal 10 includes, for example, a slate terminal 10a, a smartphone 10b, a mobile phone, a network device, a computer, a netbook terminal, an electronic book terminal, an electronic dictionary terminal, a portable music player, a portable content playback / recording player It may be a general information appliance such as.

  The communication control server 100 is assumed to be a server (computer) having functions to be described later, but may be a server having a general Web server function. The communication control server 100 may be a network device such as a gateway or a router (including a mobile router), or may be a home server.

[Description of each function]
FIG. 4 is a diagram showing the functional blocks of the communication control server 100 and the information communication terminal 10 and the relationship between the functions. The hardware configuration of each device will be described with reference to FIG.

  If the information communication terminal 10 includes the control unit 11, the data storage unit 12, the data communication unit 13, and the input / output unit 14, the information communication terminal 10 is any of household appliances, commercial appliances, portable terminals, and commercial terminals. May be.

  The control unit 11 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. Alternatively, a wireless device or the like conforming to the IMT-2000 standard such as a third generation mobile communication system is provided (may be a wired LAN connection). Furthermore, the data storage unit 12 includes one or both of an HDD (Hard Disk Drive) and an SSD (Solid State Drive). Further, the input / output unit 14 includes a display unit such as a liquid crystal monitor that displays an image, and an input unit such as a keyboard, a touch panel, and a voice input that accept input from the user.

  The control unit 11 reads a predetermined program and realizes the data transmission / reception module 22 in cooperation with the data communication unit 13. Further, the data transmission / reception module 22 includes a TCP communication module 23 that performs TCP communication with the communication control server 100, and a UDP communication module 24 that performs UDP communication with the communication control server 100.

  The communication control server 100 includes a control unit 101, a data storage unit 102, and a data communication unit 103.

  The control unit 101 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like. The data communication unit 103 includes a wired or wireless communication device. , HDD (Hard Disk Drive), SSD (Solid State Drive), or the like.

  The control unit 101 reads a predetermined program and cooperates with the data communication unit 103 to realize a data input module 120, a communication selection module 121, and a data transmission / reception module 122. Furthermore, the data transmission / reception module 122 includes a TCP communication module 123 that performs TCP communication with the information communication terminal 10, and a UDP communication module 124 that performs UDP communication with the information communication terminal 10.

[Communication method selection processing]
FIG. 5 is a flowchart of the communication method selection process executed by the communication control server 100. The communication method selection process will be described based on this flowchart.

  First, the communication control server 100 receives an input of data to be transmitted from the administrator to the information communication terminal 10. Here, the data to be transmitted is data as shown in FIG. For example, it is simply packet data indicating the presence / absence of a message, and the data size is small (10 bytes), but the transmission frequency is as high as every 3 minutes, and the transmission timing is also high when the information communication terminal 10 is powered on. The data may be always transmitted at a certain time. In addition, when the music content file is data to be transmitted, the data size is as large as 300 MByte, but the transmission frequency is only once, and the transmission timing is limited to when Wi-Fi is connected. Data to be transmitted is classified in this way by data size, transmission frequency, and transmission timing.

  Therefore, the communication control server 100 accepts input of the data size (step S01), transmission timing, and transmission frequency (step S02) of data transmitted from the administrator. Here, these input acceptances are not only manually input from the administrator, but may also be received from other servers and terminals, and the input of the communication method selection table shown in FIG. 6 is managed. Or a communication method selection table may be received from another server or terminal.

  Next, the communication control server 100 selects whether to perform TCP communication or UDP communication according to the input data size, transmission timing, and transmission frequency (step S03).

  For example, an algorithm for determining whether to select either TCP communication or UDP communication can be provided as follows. When the data size of the data to be transmitted is a predetermined amount or more, it is conceivable to select TCP communication. For example, when using an IP network, it is known that the maximum data area that can be transmitted and received by UDP communication is 1472 bytes. Therefore, when the data size is 1472 bytes or more, TCP communication is selected because the data cannot be transmitted by one UDP transmission and the data needs to be divided.

  Alternatively, the TCP communication may be selected when the transmission frequency is low, such as once, and the UCP communication may be selected when the transmission frequency is frequent. Here, since the reliability standard of transmission data is different for each application that performs communication, it may be possible to set whether to select TCP communication or UDP communication for each application.

  In addition, as the data transmission timing, when the information communication terminal 10 is powered on, when data is always transmitted, UDP communication is selected in order to suppress the battery consumption of the information communication terminal 10. (Notification that there is a message in FIG. 6: in the case of application A, etc.).

  In addition, you may be based on the battery remaining amount of the information communication terminal 10 as a reference | standard which selects TCP communication and UDP communication. That is, when the remaining battery amount of the information communication terminal 10 is smaller than a predetermined amount (such as a quarter of the maximum possible charge amount of the battery), UDP communication with less battery consumption is selected.

  As another selection criterion, UDP communication may be selected when the radio wave for information communication terminal 10 to communicate with communication control server 100 is weak (when the radio field intensity is a predetermined amount or less). . That is, when the communication radio wave of the information communication terminal 10 is weak, the communication is interrupted. Therefore, it is desirable to select the UDP communication with less communication to be prepared in advance.

  One of such algorithms or a combination of a plurality of algorithms is selected to select either TCP communication or UDP communication. Here, when a plurality of algorithms are combined, a priority order may be provided for each of these algorithms, and a communication method selected by an algorithm having a higher priority order may be selected as a result.

  If the TCP control is selected (step S04), the communication control server 100 transmits data by TCP using the TCP communication module 123 (step S06).

  When the UDP communication is selected (step S05), the communication control server 100 transmits data by UDP using the UDP communication module 124 (step S06).

[Select information communication terminal]
In the above-described example, the communication control server 100 selects the TCP communication and the UDP communication, and the communication is performed by either method. However, the communication method selection process may be executed by the information communication terminal 10. Good. That is, the communication method selection process may be performed when the information communication terminal 10 uploads data to the communication control server 100 or transmits small packet data.

  In this case, the user inputs the data size, transmission frequency, and transmission timing. Here, when an application installed in the information communication terminal 10 performs communication, input may be performed by designating the data size, transmission frequency, and transmission timing of data to be transmitted. The algorithm for selecting TCP communication or UDP communication may be the same as described above.

  The means and functions described above are realized by a computer (including a CPU, an information processing apparatus, and various terminals) reading and executing a predetermined program. The program is provided in a form recorded on a computer-readable recording medium such as a flexible disk, CD (CD-ROM, etc.), DVD (DVD-ROM, DVD-RAM, etc.), for example. In this case, the computer reads the program from the recording medium, transfers it to the internal storage device or the external storage device, stores it, and executes it. The program may be recorded in advance in a storage device (recording medium) such as a magnetic disk, an optical disk, or a magneto-optical disk, and provided from the storage device to a computer via a communication line.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these embodiment mentioned above. The effects described in the embodiments of the present invention are only the most preferable effects resulting from the present invention, and the effects of the present invention are limited to those described in the embodiments of the present invention. is not.

  1 communication control system, 3 public line network, 10 information communication terminal, 100 communication control server

Claims (5)

A communication control device for communicating with a computer,
A data input module that accepts data size of data to be transmitted to the computer, timing of communication, and frequency of communication;
Based on the data size, the timing, and the frequency, a communication selection module that selects whether to transmit data to be transmitted to the computer by either TCP communication or UDP communication;
A data transmission / reception module for transmitting data to the computer at the timing and the frequency in the selected communication method;
A communication control device comprising:   The communication control according to claim 1, wherein the communication selection module further selects whether to transmit data to be transmitted to the computer by TCP communication or UDP communication based on the remaining battery amount of the computer. apparatus.   The communication according to claim 1 or 2, wherein the communication selection module further selects whether to transmit data to be transmitted to the computer by TCP communication or UDP communication based on the radio wave intensity of the computer. Control device. A communication control method when computers communicate with each other,
Receiving input of data size of data to be transmitted to one computer, timing of communication, and frequency of communication;
Selecting whether to transmit data to be transmitted to the one computer by TCP communication or UDP communication based on the data size, the timing, and the frequency;
In another communication method, another computer transmits data to the one computer at the timing and the frequency.
A communication control method comprising: On the computer,
Receiving the data size of data to be transmitted to another computer, the timing of communication, and the frequency of communication;
Selecting whether to transmit data to be transmitted to the other computer by either TCP communication or UDP communication based on the data size, the timing, and the frequency;
A communication control program for causing the other computer to execute the step of transmitting data at the timing and the frequency with the selected communication method.

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