JP6655247B2 - Information processing device - Google Patents

Description

  The present invention relates to an information processing device and an information processing method.

Bluetooth (registered trademark) is an example of an information processing apparatus that transmits and receives data after a connection is established. Bluetooth Classic is an example of high-speed communication of this information processing device. As an example of low-speed communication of an information processing device, there is Bluetooth Low Energy (LE). Bluetooth LE and Bluetooth Classic differ in the way they detect nearby devices. A method for detecting a peripheral terminal in Bluetooth Classic will be described. In this method, terminal A, which is a device that is a discovery device, periodically transmits a packet for detecting a peripheral terminal. Terminal A, which is a Discoverable (searched) receiving the packet, transmits a response packet, so that terminal A completes detection of terminal B. In Classic, since one terminal can have only one of Discovery and Discoverable, a combination of the state of terminal A and the state of terminal B where the peripheral device cannot be found occurs. A technique is known in which when a discovery by one terminal is received by another nearby terminal and a connection is not established, a search / search cycle is changed to quickly establish a connection between the two (see Patent Document 1, for example). ).

In the peripheral terminal detection method in Bluetooth LE, a terminal B, which is a peripheral corresponding to a server, broadcasts an Advertising packet. At this time, the terminal A, which is a Central corresponding to the client, scans the peripheral terminals to detect the Advertising packet, and the terminal A completes the detection of the terminal B. In Bluetooth LE after Bluetooth 4.1, one terminal can have both the role of Central and Peripheral at the same time. Therefore, there is a feature that the probability of successfully detecting a peripheral terminal is higher than that of Bluetooth Classic. Also, the communication speeds of Bluetooth LE and Bluetooth Classic are significantly different. The data rate of Bluetooth Classic is up to 3Mbps, and the data rate of Bluetooth LE is up to 1Mbps. The effective communication speed of Bluetooth Classic is 2.1Mbps, and that of Bluetooth LE is 270kbps. Since Bluetooth LE has a much slower communication speed than Bluetooth Classic, it is not suitable for transferring large data and is a communication standard for small data transfer such as sensor values.

JP 2013-18387 A

When building a mobile ad hoc network (MANET) using information processing devices that send and receive data after a connection has been established, the connection between terminals may be temporarily disconnected due to the movement of terminals or the appearance of obstacles. However, there is a problem that data transmission and reception are not stable. For example, there is a connection establishment method using only Bluetooth Classic shown in the prior art document (Patent Document 1). However, in Bluetooth Classic, since one terminal can have only one of Discovery and Discoverable states, A method of switching the states to establish a connection (hereinafter, referred to as a conventional method) has been used. However, in the conventional method, it takes time to avoid the combination of the state of terminal A and the state of terminal B in which the peripheral terminal cannot be found, and it may take time to construct the MANET and transfer data.

  The present invention has been made in view of the above points, and even if the connection between terminals is temporarily disconnected due to the movement of the terminal or the appearance of an obstacle, stable connection is achieved by combining low-speed communication and high-speed communication. An information processing apparatus and an information processing method capable of providing data transmission and reception.

The present invention has been made to solve the above problems, and is an information processing apparatus for transmitting and receiving data after establishing a connection between devices such as terminals, and a high-speed communication unit that performs high-speed communication with the devices. A low-speed communication unit that performs low-speed communication with the device, a communication method control unit that distributes information about connection establishment with the device and information about data communication acquired by the low-speed communication unit or the high-speed communication unit, and the low-speed communication. A low-speed communication connection control unit that establishes a connection with the device based on the information of the device obtained from the unit, and a high-speed communication connection control that establishes a connection with the device based on the information of the device obtained from the high-speed communication unit Unit, a device information recording unit that records information about the device required for establishing a connection with the device, and the device A content storage unit that stores transmission / reception data, a data communication unit that performs transmission / reception processing of data obtained from the high-speed communication unit and information necessary for high-speed communication obtained from the low-speed communication unit, and the low-speed communication connection control unit A transmission data processing unit for processing a transmission request of information necessary for high-speed communication and a transmission request of data from the content storage unit and transferring the data to the data communication unit; A reception data processing unit that performs processing of information necessary for communication, transfers data to the content storage unit, and transfers information necessary for high-speed communication to the high-speed communication connection control unit. It is.

Further, the present invention is an information processing method for a client that requests the establishment of a connection in the low-speed communication connection control unit in the information processing device that transmits and receives data after a connection between devices such as terminals is established, Detecting the advertisement information in the low-speed communication unit, transmitting the information of the device after requesting the establishment of the connection in the low-speed communication connection control unit, using the connection established in the low-speed communication connection, A step of establishing a connection in the high-speed communication connection control unit; and a step of releasing all connections if no advertisement communication is detected in the low-speed communication connection control unit.

Furthermore, the present invention provides an information processing method for a server, wherein the low-speed communication connection control unit accepts a connection establishment request in the information processing apparatus which transmits and receives data after a connection between devices such as terminals is established. Transmitting the advertisement information in the low-speed communication unit, accepting a connection establishment request in the low-speed communication connection control unit, establishing a connection, and receiving information on the device, establishing the low-speed communication connection; Establishing a connection in the high-speed communication connection control unit using the established connection.

According to the present invention, even if the connection between the terminals is temporarily disconnected due to the movement of the terminal or the appearance of an obstacle, stable data transmission and reception can be performed by combining low-speed communication and high-speed communication. The conventional method shown in the prior art document and the method of the present invention were mounted on a terminal, and a comparative experiment was performed. Two terminals were used and arranged so that each terminal was within the communication range. In order to measure the time until a connection between terminals is established, a function to automatically disconnect the connection between terminals after a random time has been implemented. The time for disconnecting the connection is randomly determined from the time included in the disconnection time interval set in advance. For example, if the disconnection time interval is set from 10 seconds to 20 seconds, the number of seconds is determined randomly from the time from 10 seconds to 20 seconds, and the connection is disconnected after the time determined from the establishment of the connection. With this function, an environment in which the connectivity of wireless communication between Bluetooth MANET terminals changes frequently due to temporary disconnection of the connection between the terminals due to the movement of the terminal or the appearance of obstacles, etc. Simulate without moving. In an environment where the connectivity between Bluetooth MANET terminals changes frequently, the operating time during which data can be transmitted and received between terminals within a certain period of time is measured to measure the operating rate of Bluetooth MANET.

  In each method, the time required for connection was measured 200 times, and the average value was calculated. The average time of the conventional method was about 24 seconds, and the average time of the method of the present invention was about 6 seconds. From the experimental results, it was confirmed that the method of the present invention reduced the time required for connection by about 75% compared to the conventional method. In each method, the operation time for data transmission / reception was measured in 15 minutes. The operation rate for data transmission and reception in the conventional method was about 54%, and the operation rate for data transmission and reception in the method of the present invention was about 85%. From the experimental results, it was confirmed that the method of the present invention has a longer operating time for data transmission and reception by about 32% of the experimental time than the conventional method.

1 is a block diagram illustrating a configuration of an embodiment of an information processing device according to the present invention. 5 is a flowchart illustrating an example of an information processing method of a client requesting establishment of a connection in a low-speed communication connection control unit in the information processing method according to the present invention. 9 is a flowchart illustrating an example of an information processing method of a server that accepts a connection establishment request in a low-speed communication connection control unit according to the embodiment. 5 is a sequence chart illustrating information exchange between a client and a server according to the embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration of the information processing apparatus. The information processing device 10 is a terminal such as a smartphone or a tablet. The device 2 is a terminal such as a similar smartphone or tablet existing around the information processing device 10. The information processing device 10 establishes a communication connection by exchanging the Bluetooth address, the authentication key, the encryption key, and the like of the device 2 with the device 2. The information processing device 10 and the device 2 transfer information by Bluetooth communication. Further, the information processing apparatus 10 and the peripheral devices 2 and the like are all driven by batteries.

The low-speed communication unit 105 performs communication by Bluetooth LE (Low Energy). The high-speed communication unit 106 performs communication by Bluetooth Classic. The low-speed communication unit 105 performs transmission and detection of advertisement information (Advertising) in response to a request from the low-speed communication connection control unit 101. The low-speed communication unit 105 has a lower communication speed than the high-speed communication unit 106, but consumes less power for communication. The high-speed communication unit 106 has a higher communication speed than the low-speed communication unit 105, but consumes more power in communication.

In the present embodiment, communication performed by each unit of the information processing apparatus 10 with the device 2 is performed via the low-speed communication unit 105 or the high-speed communication unit 106. Communication performed by each unit of the information processing device 10 with the device 2 includes communication related to connection establishment and data communication. Each communication unit is used to establish a connection between the low-speed communication unit 105 and the high-speed communication unit 106, and communication is performed using only the high-speed communication unit 106 for data communication.

The communication system control unit 104 sorts information on connection establishment with low-speed communication or high-speed communication and information on data transmission / reception. Information about the connection establishment of the low-speed communication is transferred to the low-speed communication connection control unit 101. Information on connection establishment for high-speed communication is transferred to the high-speed communication connection control unit 102. Information on data transmission and reception is transferred to the data communication unit 103.

The low-speed communication connection control unit 101 controls establishment of a connection used for Bluetooth LE (Low Energy) communication, and the like. Also, the low-speed communication connection control unit 101 manages a state (connected / disconnected) related to the connection with the device 2, and exchanges communication information necessary for communication between the terminals to exchange the information processing device 101 with the device 2. Establish communication connection between (pairing). The information processing apparatus 101 performs all information processing related to establishing a low-speed communication connection with the device 2 or the like. When establishing a low-speed communication connection with the device 2, the low-speed communication connection control unit 101 checks with the high-speed communication connection control unit 102 whether a high-speed communication connection has already been established. If the high-speed communication connection has not been established, the low-speed communication connection control unit 101 establishes a low-speed communication connection with the device 2. When a Bluetooth LE connection is established with the device 2 or the like, the Bluetooth address of the information processing apparatus 10 managed by the device information recording unit 107 is transmitted to the device 2 using Bluetooth LE communication. Request.

The device information recording unit 107 manages information on low-speed communication and high-speed communication of the information processing device. An example of the managed information is a Bluetooth address and the like. In the present embodiment, information necessary for high-speed communication between devices is exchanged by using low-speed communication to establish a high-speed communication connection between the information processing apparatus 101 and the device 2. The device information recording unit 107 manages information necessary for high-speed communication between terminals, and processes a transmission request for the information from the low-speed communication connection control unit 101 to the device 2.

The high-speed communication connection control unit 102 controls establishment of a connection used for Bluetooth Classic communication and the like. The high-speed communication connection control unit 102 manages a state (connected / disconnected) related to the connection with the device 2, and exchanges communication information (Bluetooth address) necessary for communication between the terminals to exchange information processing device 102 Establish a communication connection between the device and device 2 (pairing). The information processing apparatus 102 performs all information processing related to establishing a high-speed communication connection with the device 2 or the like. When the high-speed communication connection control unit 102 receives a high-speed communication connection establishment request from the device 2, it establishes a high-speed communication connection between the information processing apparatus 10 and the device 2 based on the received information.

The data communication unit 103 processes information related to data communication with the device 2 using low-speed communication and high-speed communication. The data received from the device 2 is transferred to the reception data processing unit 109. Also, the information transferred from the transmission data processing unit 108 is transferred to the communication method control unit 104 as transmission data to the device 2.

The transmission data processing unit 108 processes a transmission request for information necessary for high-speed communication between devices from the low-speed communication connection control unit 101 and a transmission request for content data from the content storage unit 110, and transfers the request to the data communication unit 103. Thus, information is transmitted to the device 2 via the low-speed communication unit 105 and the high-speed communication unit 106.

The reception data processing unit 109 processes the data transferred from the data communication unit 103. The information transferred from the data communication unit 103 includes information necessary for high-speed communication between the content data and the device. The content data is transferred to the content storage unit 110, and information necessary for high-speed communication between devices is transferred to the high-speed communication connection control unit 102. The high-speed communication connection control unit 102 that has received the information necessary for high-speed communication between the devices transmits a connection establishment request for high-speed communication to the device 2 based on the received information.

The content storage unit 110 stores content information created in the information processing device 10, the device 2, and the like. When a content transmission request from the information processing device 10 to the device 2 occurs, the content information to be transmitted is transferred to the transmission data processing unit 108. When content information from the device 2 is received from the reception data processing unit 109, the content information is stored in the storage unit.

FIG. 2 is a flowchart illustrating an information processing method of a client that requests establishment of a connection in the low-speed communication connection control unit. Hereinafter, description will be made with reference to the drawings.
Step S101: Activate the low-speed communication unit 105 and the high-speed communication unit 106.
Step S102: The low-speed communication unit 105 starts detecting the device 2 transmitting the advertisement information (Advertising packet).
Step S103: When the low-speed communication unit 105 detects the advertisement information, the process proceeds to step S106. On the other hand, if the advertisement information cannot be detected within the fixed time, the process proceeds to step S104.
Step S104: The low-speed communication section 105 ends detection of the device 2 transmitting the advertisement information.
Step S105: All the connections of the low-speed communication unit 105 controlled by the low-speed communication connection control unit 101 are released.
Step S106: The low-speed communication connection control unit 101 determines whether or not the device 2 detected in step S103 is a device for which a connection has already been established. If the connection has not been established, the process proceeds to step S107. On the other hand, if the connection is already established, the process proceeds to step S103.
Step S107: The low-speed communication connection control unit 101 exchanges communication information with a device determined to have not established a connection in step S106, and establishes a low-speed communication connection.
Step S108: In order to transmit information necessary for establishing a high-speed communication with the device 2, the device 2 acquires its own device information from the device information recording unit 107. The acquired device information is transmitted to the device 2 in the low-speed communication in which the connection has been established in step S107.
Step S109: Wait for reception of a connection establishment request for high-speed communication from the device 2. If a connection establishment request has been received from the device 2, the process proceeds to step S110. On the other hand, if the connection establishment request for the high-speed communication has not been received within the fixed time, the reception wait is interrupted and the process proceeds to step S103.
Step S110: The communication information is exchanged with the device 2 based on the information of the connection establishment request received in step S109, and the high-speed communication connection control unit 102 establishes a high-speed communication connection with the device 2.

FIG. 3 is a flowchart illustrating an information processing method of a server that accepts a connection establishment request in a low-speed communication connection control unit. This will be described below with reference to the drawings.
Step S21: Activate the low-speed communication unit 105 and the high-speed communication unit 106.
Step S22: The low-speed communication section 105 starts transmitting advertisement information (Advertising packet).
Step S23: When the low-speed communication connection control unit 101 receives the low-speed communication connection establishment request from the device 2, the process proceeds to step S24. On the other hand, if the connection establishment request for the low-speed communication cannot be received, step S23 is repeatedly executed to wait for the reception of the connection establishment request.
Step S24: Based on the low-speed communication connection establishment request received by the low-speed communication connection control unit, communication information is exchanged with the device 2 to establish a low-speed communication connection.
Step S25: The data communication unit 103 and the reception data processing unit 109 wait for reception of device information of the device 2 concerned. If the device information of the device 2 has been received, the process proceeds to step S26. If the device information of the device 2 cannot be received, step S25 is repeatedly executed to wait for reception of the device information.
Step S26: A connection establishment request for high-speed communication is transmitted to the device 2 based on the received device information of the device 2, and a connection for high-speed communication is established with the device 2.

FIG. 4 is a sequence chart showing information exchange regarding connection establishment between the client (terminal A) and the server (terminal B). This will be described below with reference to the drawings.
Step S31: The terminal A detects the advertisement information (Advertising packet), and the terminal B detects the advertisement information broadcasting the advertisement information.
Step S32: The terminal A transmits a Bluetooth LE connection establishment request to the terminal B based on the detected advertisement information.
Step S33: Upon receiving the Bluetooth LE connection establishment request from the terminal A, the terminal B accepts the connection establishment request, thereby establishing a Bluetooth LE connection between the terminals A and B.
Step S34: The terminal A transmits to the terminal B the device information of the terminal itself required for establishing the Bluetooth Classic connection by using the established Bluetooth LE connection.
Step S35: The terminal B transmits a Bluetooth Classic connection establishment request to the terminal A based on the received device information.
Step S36: When the terminal A receives the Bluetooth Classic connection establishment request received from the terminal B, a Bluetooth Classic connection is established between the terminals A and B in step S37.

The present invention provides an emergency call, evacuation guidance, search for victims, rescue, and collection of damage information when disasters occur, for example, when a fixed base station or a wired network becomes unavailable due to an earthquake, tsunami, typhoon, or the like. Is effective as It can also be used as an early warning of an earthquake or tsunami in combination with a sensor network. In addition, information on traffic accidents and traffic congestion can be exchanged. It can also be used to obtain information on stores along the road and service information on service areas. Further, the present invention is effective for a simple network in a limited range, and can be used for acquiring service information of shops, restaurants, and the like in amusement parks, stadiums, and the like, and acquiring information on waiting times of attractions and the number of waiting people. Further, it is effective as a communication means when it is difficult to set up and use a fixed base station, for example, for supporting collaborative work, for example, excavating archeological sites, exploring caves, and the like.

10 Information processing equipment
101 Low-speed communication connection section
102 High-speed communication connection controller
103 Data communication section
104 Communication system control unit
105 Low-speed communication section
106 High-speed communication unit
107 Device information recording section
108 Transmission data processing section
110 Content Storage Unit
2 Equipment

Claims (1)

A low-speed communication unit that performs low-speed communication with the device;
A high-speed communication unit that performs high-speed communication with the device;
A low-speed communication connection control unit for establishing a low-speed communication connection with the device,
A high-speed communication connection control unit for establishing a high-speed communication connection with the device,
With
When acting as a client,
When the low-speed communication unit receives the advertisement information from the device, the low-speed communication connection control unit transmits a request to the device to establish a low-speed communication connection with the device,
Utilizing the established low-speed communication connection with the device, transmits information necessary for establishing the high-speed communication connection to the device, and in response to a request from the device, the high-speed communication connection control unit, Establish a high-speed communication connection with
If the request from the device is not received and the high-speed communication connection is not established, the low-speed communication connection control unit repeatedly performs the detection of the advertisement information through the low-speed communication unit, and When is no longer detected, disconnect all connections with the device,
When acting as a server,
While the low-speed communication unit starts the transmission of advertising information to the device, upon receiving a request from the device, the low-speed communication connection control unit to establish a low-speed communication connection with the device,
Utilizing the established low-speed communication connection with the device, upon receiving information required for establishing the high-speed communication connection from the device, transmits a request to the device, the high-speed communication connection control unit, Establish a high-speed communication connection with the device,
Information processing device.

Images