JP6185884B2 - Communication system and operation method thereof - Google Patents

Description

  The present invention relates to a communication system and an operation method thereof.

  As a method of registering a new wireless device in the network management device, there is a method of directly logging in to the network management unit with a PC or the like and inputting information (MAC address, etc.) of the slave unit to be registered through a user interface or the like (patent) Reference 1).

JP 2007-140743 A Japanese Patent Laid-Open No. 06-124256

  However, in this method, 1) the PC or the like must be directly connected to the network management apparatus, and 2) it is necessary to manually input information of the slave unit.

  In addition, when connecting a slave unit to a master unit, for example, if the slave unit is connected to the closest master unit, the stability of communication is lacking when the number of slave units accommodated in the master unit is large. there is a possibility.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a communication system capable of improving the stability of communication when a slave unit is connected to a master unit.

In order to solve the above-described problem, the first aspect of the present invention provides a plurality of master units that can be connected wirelessly to one slave unit and one master unit to be connected to the slave unit from the plurality of master units. A communication system including a parent device selection device for selecting a parent device, wherein each parent device acquires the number of child devices connected to the parent device when receiving a connection request from the child device A monitoring unit; and a selection request transmission unit that transmits a selection request including an accommodation rate that is a ratio of the number of child devices to the number of child devices connectable to the parent device to the parent device selection device, The machine selection device uses a selection request receiving unit that receives the selection request and a capacity ratio in the received selection request as a parent machine to be connected to the child machine. A connection destination parent device selection unit for selecting one of the devices, and the selected one parent device While sending a notification of connection permission, characterized in that it comprises a base unit setting changing unit that transmits a notification of the connection disapproval to the parent machine said not selected.

  According to a second aspect of the present invention, there is provided a master unit selection device for selecting a master unit from the plurality of master units as a master unit to be connected to the slave units and a plurality of master units that can be wirelessly connected to a single slave unit. Each of the parent devices, when receiving a connection request from the child device, a state monitoring unit that acquires a communication amount in the parent device, and a maximum communication amount that can be communicated in the parent device A selection request transmission unit that transmits a selection request including a communication rate that is a ratio of a communication amount in the parent device to the parent device selection device, and the parent device selection device receives the selection request. A connection destination parent device selection unit that selects one of a plurality of parent devices that have transmitted the selection request as a parent device to be connected to the child device using a communication ratio in the received selection request. The connection permission is sent to the selected master unit. While transmitting the, characterized in that it comprises a base unit setting changing unit that transmits a notification of the connection disapproval to the parent machine said not selected.

  According to a third aspect of the present invention, there is provided a master unit selection device for selecting a master unit from the plurality of master units as a master unit to be connected to the slave units and a plurality of master units that can be wirelessly connected to a single slave unit. When each of the master units receives a connection request from the slave unit, the master unit acquires the reception strength of the radio wave received from the master unit by the slave unit included in the connection request A state monitoring unit; and a selection request transmission unit that transmits a selection request including the reception strength to the parent device selection device, wherein the parent device selection device is received with a selection request reception unit that receives the selection request. Further, using the reception strength in the selection request, as a parent device to be connected to the child device, a connection destination parent device selection unit that selects one from a plurality of parent devices that transmitted the selection request, and the selected While sending a connection permission notification to one parent device, Characterized in that it comprises a base unit setting changing unit that transmits a notification of the connection disapproval to never been the master unit.

  According to a fourth aspect of the present invention, there is provided a master unit selection device for selecting a master unit from the plurality of master units as a master unit to be connected to the slave units and a plurality of master units that can be wirelessly connected to a single slave unit. Each of the master units can acquire the number of slave units connected to the master unit and connect to the master unit when receiving a connection request from the slave unit A selection request including a capacity ratio, which is a ratio of the number of child devices to the number of child devices, is transmitted to the parent device selection device, and the parent device selection device receives the selection request and receives the selection received Using the accommodation rate in the request, select one of the plurality of parent devices that have transmitted the selection request as a parent device to be connected to the child device, and notify the selected one parent device of connection permission. While transmitting, a notification of connection disapproval is transmitted to the unselected master unit, That.

  According to a fifth aspect of the present invention, there is provided a master unit selection device for selecting a master unit from the plurality of master units as a master unit to be connected to the slave units and a plurality of master units that can be connected to one slave unit wirelessly. Each of the parent devices, when receiving a connection request from the child device, obtains a communication amount in the parent device, and with respect to a maximum communication amount that can be communicated in the parent device A selection request including a communication ratio that is a ratio of communication amount in the parent device is transmitted to the parent device selection device, the parent device selection device receives the selection request, and determines a communication ratio in the received selection request. Using one of a plurality of parent devices that have transmitted the selection request as a parent device to be connected to the child device, and sending a connection permission notification to the selected one parent device, Sending a connection rejection notice to the base unit not selected And wherein the Rukoto.

  According to a sixth aspect of the present invention, there is provided a parent device selection device for selecting a parent device from the plurality of parent devices as a parent device to be connected to the child devices and a plurality of parent devices that can be wirelessly connected to one child device. If each of the master units receives a connection request from the slave unit, the reception strength of the radio wave received by the slave unit from the master unit is included in the connection request. And the selection request including the reception strength is transmitted to the parent device selection device, the parent device selection device receives the selection request, and uses the reception strength in the received selection request, the child device As a parent device to be connected to a device, one is selected from a plurality of parent devices that have transmitted the selection request, and a notification of connection permission is transmitted to the selected one parent device, while the parent device that has not been selected is selected. A notification of connection disapproval is transmitted to the machine.

  ADVANTAGE OF THE INVENTION According to this invention, the stability of communication when connecting a subunit | mobile_unit to a main | base station can be improved.

It is a figure which shows the communication system which concerns on this Embodiment. It is a flowchart which shows operation | movement of a communication system.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a communication system according to the present embodiment.

  The communication system includes a plurality of master units 2 that can be wirelessly connected to one slave unit 1 and a master unit selection device 3 that selects one master unit from the plurality of master units 2 as a master unit to be connected to the slave unit 1. Including.

  Here, the connection means a connection when the slave unit 1 is connected to a desired network via the master unit 2, and the slave unit 1 is simply connected to all the master units 2 to transmit information and the like. The transmission itself is possible.

  The subunit | mobile_unit 1 is one of many subunit | mobile_units. The slave unit 1 is, for example, a household device, the master unit 2 is, for example, a wireless router, and the master unit selection device 3 is, for example, a server provided on the Internet.

  The subunit | mobile_unit 1 transmits the connection request | requirement for connecting with a desired network with respect to the main | base station 2 which can receive an electromagnetic wave, ie, the state monitoring part 11 which detects the main | base station 2 of the vicinity, and the detected main | base station 2 A connection request transmission unit 12 for performing the above-described operation.

  When each parent device 2 receives a connection request from the child device 1, the state monitoring unit 21 that obtains a state element indicating a state related to the parent device 2 itself and a selection request including the state element are transmitted to the parent device selection device 3. And a selection request transmission unit 22 for performing the selection.

  The base unit selection device 3 uses a selection request receiving unit 31 that receives a selection request and a state element in the received selection request, as a base unit to be connected to the handset 1, and a plurality of parent units that have transmitted the selection request A connection-destination parent device selection unit 32 that selects one of the devices, and a parent device that transmits a connection permission notification to the selected one parent device, while transmitting a connection disapproval notification to the unselected parent device A setting changing unit 33. Note that the parent device selection device 3 may be incorporated in one of the parent devices 2.

  FIG. 2 is a flowchart showing the operation of the communication system.

  The state monitoring unit 11 of the slave unit 1 detects the master unit 2 that can receive radio waves, that is, the nearby master unit 2 (S1). Since the slave unit 1 and the master unit 2 are connected wirelessly, the reception intensity of radio waves varies depending on the surrounding radio wave conditions and, for example, the position when the slave unit 1 or the master unit 2 is a mobile object. The unit 11 measures the reception intensity of the radio wave received from each parent device 2, and detects, for example, the parent device 2 having a reception intensity equal to or higher than a certain level. Here, it is assumed that a plurality of parent devices 2 are detected.

  The connection request transmission unit 12 of the child device 1 transmits a connection request including the reception intensity of the radio wave received from the parent device 2 to each detected parent device 2 (S3). At this time, for example, the slave unit 1 and the master unit 2 authenticate with a user ID and a password. Alternatively, such authentication has already been performed.

  The state monitoring unit 21 of each parent device 2 that has received the connection request extracts the reception strength from the connection request, and also determines the number of child devices connected to the parent device 2, the amount of communication in the parent device 2, that is, Three state elements (reception strength, number of slave units, traffic) are acquired (S5).

  Next, the selection request transmission unit 22 of each parent device 2 can communicate with the parent device 2 in the accommodation rate that is the ratio of the number of acquired child devices to the number of child devices that can be connected to the parent device 2. A communication ratio that is a ratio of the acquired communication amount in the parent device to the maximum communication amount is calculated (S7). That is, the selection request transmission unit 22 obtains two state elements (accommodation rate and communication rate) by calculation.

  Next, the selection request transmission unit 22 of each parent device 2 transmits a selection request including three state elements (accommodation rate, communication rate, reception strength) and identification information of the child device 1 to the parent device selection device 3 ( S9).

  The selection request receiving unit 31 of the parent device selection device 3 receives a selection request from each parent device 2. At this time, the selection request receiving unit 31 waits for a certain period (for example, 10 seconds) after receiving the selection request for the first time, and sets the selection request and the selection request received in the period for the first time to be processed.

  Next, the connection destination parent device selection unit 32 of the parent device selection device 3 uses a state element in the target selection request as a parent device to be connected to the child device 1 from a plurality of parent devices that have transmitted the selection request. Select one.

  Specifically, the connection destination master unit selection unit 32 first determines whether the number of master units 2 that have transmitted a selection request including the minimum accommodation rate is 1 or 2 (S11). If the number is 1 (S11: 1), the parent device 2 is selected (S12).

  If the number of master units 2 that have transmitted a selection request including the minimum capacity is two or more (S11: 2 or more), the connection destination master unit selection unit 32 is the smallest communication among the two or more master units 2 It is determined whether the number of master units 2 that have transmitted a selection request including a ratio is 1 or more (S15). If the number of master units 2 is 1 (S15: 1), the master unit 2 is selected (S16). ).

  If the number of master units 2 that have transmitted a selection request including the minimum communication ratio is two or more (S15: 2 or more), the connection destination master unit selection unit 32 receives the largest reception among the two or more master units 2 It is determined whether the number of master units 2 that have transmitted a selection request including strength is 1 or more (S17). If the number of master units 2 is 1 (S17: 1), the master unit 2 is selected (S18). ).

  If the number of master units 2 that have transmitted a selection request including the maximum reception strength is 2 or more (S15: 2 or more), the connection destination master unit selection unit 32 selects the slave unit among the two or more master units 2 For example, when the identification information of 1 is described in an alphabetical dictionary, the parent device 2 that has transmitted the selection request including the identification information with the earliest description order is selected (S19).

  When the parent device 2 is selected, the parent device setting changing unit 33 transmits a connection permission notification to the selected parent device 2, and transmits a connection disapproval notification to the other parent devices 2 that have not been selected ( S21).

  The state monitoring unit 21 of the parent device 2 that has received the connection permission notification changes the setting so that the child device 1 that has transmitted the connection request can be connected, and transmits a connection permission response to the child device 1. (S23).

  As a result, the connection procedure is executed between the child device 1 and its parent device 2 (S25), and the process ends. In this way, when the slave unit 1 is connected to the master unit 2, the slave unit 1 can be connected to a desired network via the master unit 2.

  In this embodiment, three state elements, that is, an accommodation rate, a communication rate, a reception intensity, and identification information of a slave unit are used to select a master unit. However, one or more of these are used. The parent device may be selected arbitrarily.

  Further, any order may be used, but when the reception strength and other state elements are used, the reception strength is used first so that the base unit 2 near the handset 1 can be narrowed down first. Communication stability can be improved.

As described above, according to the present embodiment, the base unit with the minimum accommodation rate, the base unit with the minimum communication ratio,
Since the parent device corresponding to the maximum reception strength is selected, the stability of communication when the child device is connected to the parent device can be improved.

  Note that a computer program for causing a computer to function as a slave unit, a master unit, or a master unit selection device according to the present embodiment is a computer-readable recording medium such as a semiconductor memory, a magnetic disk, an optical disk, a magneto-optical disk, or a magnetic tape. And can be widely distributed by being transmitted through a communication network such as the Internet.

1 slave unit 2 master unit 3 master unit selection device 11 status monitoring unit 12 connection request transmitting unit 21 status monitoring unit 22 selection request transmitting unit 31 selection request receiving unit 32 connection destination master unit selecting unit 33 master unit setting changing unit

Claims (6)

A communication system that includes a plurality of parent devices that can be connected to one child device wirelessly and a parent device selection device that selects one parent device from the plurality of parent devices as a parent device to be connected to the child device. And
Each of the master units is
If a connection request is received from the slave unit, the status monitoring unit for acquiring the number of slave units connected to the master unit, and the ratio of the number of slave units to the number of slave units connectable to the master unit A selection request transmission unit that transmits a selection request including a certain accommodation rate to the parent device selection device;
The parent device selection device is:
Using a selection request receiving unit that receives the selection request and an accommodation rate in the received selection request, one of a plurality of parent devices that transmitted the selection request is selected as a parent device to be connected to the child device. A connection destination parent device selection unit to be selected, and a parent device setting change unit that transmits a connection permission notification to the selected one of the parent devices, while transmitting a connection disapproval notification to the unselected parent device; A communication system comprising: A communication system that includes a plurality of parent devices that can be connected to one child device wirelessly and a parent device selection device that selects one parent device from the plurality of parent devices as a parent device to be connected to the child device. And
Each of the master units is
If a connection request is received from the slave unit, a state monitoring unit that acquires the communication amount in the master unit, and a communication ratio that is a ratio of the communication amount in the master unit to the maximum communication amount that can be communicated in the master unit are included A selection request transmission unit that transmits a selection request to the parent device selection device,
The parent device selection device is:
Using a selection request receiving unit that receives the selection request and a communication ratio in the received selection request, one of a plurality of parent devices that transmitted the selection request is selected as a parent device to be connected to the child device. A connection destination parent device selection unit to be selected, and a parent device setting change unit that transmits a connection permission notification to the selected one of the parent devices, while transmitting a connection disapproval notification to the unselected parent device; A communication system comprising: A communication system that includes a plurality of parent devices that can be connected to one child device wirelessly and a parent device selection device that selects one parent device from the plurality of parent devices as a parent device to be connected to the child device. And
Each of the master units is
If a connection request is received from the slave unit, a status monitoring unit that acquires the reception strength of the radio wave received by the slave unit from the master unit included in the connection request, and a selection request that includes the reception strength is sent to the parent unit. A selection request transmitter for transmitting to the machine selection device,
The parent device selection device is:
Using a selection request receiving unit that receives the selection request and a reception strength in the received selection request, one of a plurality of parent devices that transmitted the selection request is selected as a parent device to be connected to the child device. A connection destination parent device selection unit to be selected, and a parent device setting change unit that transmits a connection permission notification to the selected one of the parent devices, while transmitting a connection disapproval notification to the unselected parent device; A communication system comprising: Operation of a communication system including a plurality of parent devices that can be wirelessly connected to one child device and a parent device selection device that selects one parent device from the plurality of parent devices as a parent device to be connected to the child device A method,
Each of the master units is
If a connection request is received from the slave unit, the number of slave units connected to the master unit is obtained, and a capacity ratio that is a ratio of the number of slave units to the number of slave units connectable to the master unit is obtained. Including a selection request including the parent device selection device,
The parent device selection device is:
The selection request is received, and using the accommodation rate in the received selection request, one of a plurality of parent devices that have transmitted the selection request is selected as a parent device to be connected to the child device, and the selection is performed. A communication permission operation is transmitted to one selected parent device, while a connection disapproval notification is transmitted to the unselected parent device. Operation of a communication system including a plurality of parent devices that can be wirelessly connected to one child device and a parent device selection device that selects one parent device from the plurality of parent devices as a parent device to be connected to the child device A method,
Each of the master units is
If a connection request is received from the slave unit, the communication request in the master unit is acquired, and the selection request including a communication ratio that is a ratio of the communication amount in the master unit to the maximum communication amount that can be communicated in the master unit is Sent to the main unit selection device,
The parent device selection device is:
The selection request is received, and the communication ratio in the received selection request is used to select one of a plurality of parent devices that have transmitted the selection request as a parent device to be connected to the child device, and the selection A communication permission operation is transmitted to one selected parent device, while a connection disapproval notification is transmitted to the unselected parent device. Operation of a communication system including a plurality of parent devices that can be wirelessly connected to one child device and a parent device selection device that selects one parent device from the plurality of parent devices as a parent device to be connected to the child device A method,
Each of the master units is
If a connection request is received from the slave unit, the slave unit acquires the reception strength of the radio wave received from the master unit included in the connection request, and sends a selection request including the reception strength to the master unit selection device. Send
The parent device selection device is:
Receiving the selection request, using the received strength in the received selection request, selecting one of a plurality of parent devices that transmitted the selection request as a parent device to be connected to the child device, and selecting the selection A communication permission operation is transmitted to one selected parent device, while a connection disapproval notification is transmitted to the unselected parent device.

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