WO2013094331A1 - Communication device - Google Patents

Communication device Download PDF

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Publication number
WO2013094331A1
WO2013094331A1 PCT/JP2012/079067 JP2012079067W WO2013094331A1 WO 2013094331 A1 WO2013094331 A1 WO 2013094331A1 JP 2012079067 W JP2012079067 W JP 2012079067W WO 2013094331 A1 WO2013094331 A1 WO 2013094331A1
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Prior art keywords
communication device
owner
communication
mode
client
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PCT/JP2012/079067
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French (fr)
Japanese (ja)
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柘植 数夫
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日本電気株式会社
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Publication of WO2013094331A1 publication Critical patent/WO2013094331A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W84/00Network topologies
    • H04W84/18Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H04W84/20Master-slave selection or change arrangements

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  • the present invention relates to a communication device, a communication system, a communication method, and a program for performing communication, and more particularly to a communication device, a communication system, a communication method, and a program for performing wireless communication.
  • a form for performing general wireless communication a form configured by a wireless access point connected to a wired network and a wireless client device connected to the wired network via the wireless access point (for example, a patent) Reference 1).
  • one wireless network is configured by one wireless access point and a wireless client device existing in an area where wireless communication with the wireless access point is possible.
  • Wi-Fi Direct there is an ad hoc wireless network such as Wi-Fi Direct.
  • one of the wireless communication devices participating in the network is a group owner having an access point function, and is directly connected to another wireless communication device (hereinafter referred to as a client).
  • a client when a client communicates with another client, the client communicates via the group owner.
  • An object of the present invention is to provide a communication device, a communication system, a communication method, and a program that solve the above-described problems.
  • the communication device of the present invention A communication device having an owner mode that operates as an access point and a client mode that operates as a client, and performs wireless communication with other communication devices, A measurement unit for measuring the reception intensity of the radio wave transmitted by the other communication device;
  • a notification unit that notifies the owner communication device operating in the owner mode of the other communication devices, the measurement result of the measurement unit,
  • a connection unit for connecting to the owner candidate communication device notified from the owner communication device,
  • candidate determination for determining the owner candidate communication device from the other communication devices based on the measurement result
  • the notification unit When the notification unit is operating in the owner mode, the notification unit notifies the other communication device of the owner candidate communication device determined by the candidate determination unit.
  • the communication system of the present invention A communication system having an owner mode that operates as an access point and a client mode that operates as a client, and having a plurality of communication devices that perform wireless communication with other communication devices,
  • the communication device A measurement unit for measuring the reception intensity of the radio wave transmitted by the other communication device;
  • a notification unit that notifies the owner communication device operating in the owner mode of the other communication devices, the measurement result of the measurement unit,
  • a connection unit for connecting to the owner candidate communication device notified from the owner communication device,
  • candidate determination for determining the owner candidate communication device from the other communication devices based on the measurement result
  • the notification unit When the notification unit is operating in the owner mode, the notification unit notifies the other communication device of the owner candidate communication device determined by the candidate determination unit.
  • the communication method of the present invention includes: A communication method in a communication system having an owner mode that operates as an access point and a client mode that operates as a client, and having a plurality of communication devices that perform wireless communication with other communication devices, A process in which the communication device measures reception intensity of a radio wave transmitted by the other communication device; A process in which the client communication device operating in the client mode of the communication devices notifies the measurement result to the owner communication device operating in the owner mode of the communication device; The owner communication device determines an owner candidate communication device from the client communication device based on the measurement result notified from the client communication device; The owner communication device notifies the client communication device of the determined owner candidate communication device; When the client communication device becomes unable to communicate with the owner communication device, the client communication device performs a process of connecting to the owner candidate communication device notified from the owner communication device.
  • the program of the present invention is A program for causing a communication device to perform wireless communication with another communication device, including an owner mode that operates as an access point and a client mode that operates as a client, A procedure for measuring the reception intensity of radio waves transmitted by the other communication device;
  • a procedure for notifying the measured result to the owner communication device operating in the owner mode among the other communication devices;
  • When operating in the owner mode a procedure for notifying the determined other candidate communication device to the other communication device;
  • When operating in the client mode when communication with the owner communication device becomes impossible, a procedure for connecting to the owner candidate communication device notified from the owner communication device is executed.
  • FIG. 1 It is a figure which shows one Embodiment of the communication system of this invention. It is a figure which shows an example of an internal structure of the communication apparatus shown in FIG. It is a sequence diagram for demonstrating the communication method in the communication system shown in FIG. It is a figure which shows the connection form of the wireless network in which the Wi-Fi connection was established by making a communication apparatus into an owner communication apparatus. It is a figure which shows an example of the electromagnetic wave intensity
  • FIG. 1 is a diagram showing an embodiment of a communication system according to the present invention.
  • the present embodiment is a wireless network 200 composed of a plurality of communication devices 100-1 to 100-4.
  • the communication devices 100-1 to 100-4 are communication devices having a wireless communication function. Communication apparatuses 100-1 to 100-4 each have an owner mode that operates as an access point and a client mode that operates as a client. These two operation modes will be described later. Note that the communication devices 100-1 to 100-4 may operate in either the owner mode or the client mode. In this case, however, the communication devices 100-1 to 100-4 periodically operate when operating in the client mode. Operates in owner mode. Further, the communication devices 100-1 to 100-4 may always operate at the same time in the owner mode and the client mode.
  • FIG. 2 is a diagram illustrating an example of an internal configuration of the communication apparatus 100-1 illustrated in FIG.
  • the internal configuration of communication apparatuses 100-2 to 100-4 shown in FIG. 1 is the same as the internal configuration of communication apparatus 100-1 shown in FIG.
  • the communication device 100-1 shown in FIG. 1 includes a measurement unit 110, a reception unit 120, a storage unit 130, a connection unit 140, a candidate determination unit 150, and a notification unit 160. Is provided.
  • FIG. 2 shows only the components related to the present invention among the components included in the communication device 100-1.
  • the measuring unit 110 measures the reception intensity of radio waves transmitted from the other communication devices 100-2 to 100-4. Although a specific measurement method is not particularly defined, for example, by measuring the S / N ratio, error rate, etc., and calculating the communication quality, the one with high communication quality is made strong in radio wave reception strength. Also good.
  • the measurement unit measures the strength of radio waves transmitted by other communication devices 100-2 to 100-4 periodically operating in the owner mode.
  • the receiving unit 120 receives signals transmitted from the other communication devices 100-2 to 100-4. Specifically, the receiving unit 120 receives signals transmitted from the communication devices 100-2 to 100-4 when the communication device 100-1 operates in the owner mode. In addition, when communication device 100-1 operates in the client mode, reception unit 120 receives a signal transmitted from a communication device operating in owner mode (hereinafter referred to as an owner communication device). .
  • an owner communication device a communication device operating in owner mode
  • the storage unit 130 stores the reception intensity of the radio wave measured by the measurement unit 110 as a radio wave intensity list. Further, the storage unit 130 stores the radio wave intensity list transmitted from the communication devices 100-2 to 100-4 and received by the receiving unit 120 when the communication device 100-1 operates in the owner mode. Store every 100-4.
  • the connection unit 140 connects to the owner candidate communication device that has already been notified from the owner communication device when communication with the owner communication device becomes impossible.
  • the connection unit 140 does not particularly define a method for determining whether or not the communication device 100-1 can no longer communicate with the owner communication device. For example, when the owner communication device periodically transmits a predetermined signal to a communication device (hereinafter referred to as a client communication device) operating in the client mode, and the receiving unit 120 does not receive the signal, It may be determined that communication with the owner communication device is no longer possible. Further, the information on the owner candidate communication device already notified from the owner communication device is received by the receiving unit 120 and stored in the storage unit 130.
  • candidate determination unit 150 When communication device 100-1 is operating in the owner mode, candidate determination unit 150, when notified of the measurement results of the radio wave reception intensity from communication devices 100-2 to 100-4, based on the measurement results Then, an owner candidate communication device to be the next owner communication device is determined from among the communication devices 100-2 to 100-4.
  • the measurement result of the radio wave reception intensity notified from the communication devices 100-2 to 100-4 is stored in the storage unit 130.
  • candidate determination unit 150 reads out the measurement result of the radio wave reception intensity notified from communication devices 100-2 to 100-4 stored in storage unit 130, and determines an owner candidate communication device.
  • This owner candidate communication device determination method will be described later.
  • the notification unit 160 When the communication device 100-1 is operating in the client mode, the notification unit 160 notifies the owner communication device of the result measured by the measurement unit 110.
  • the measurement result is stored in the storage unit 130 as a radio wave intensity list
  • the notification unit 160 reads out the radio wave intensity list from the storage unit 130 and notifies (transmits) it to the owner communication device.
  • the notification unit 160 notifies the communication device 100-2 to 100-4 of the owner candidate communication device determined by the candidate determination unit 150.
  • the notification unit 160 when the notification unit 160 operates in the client mode, the notification unit 160 also periodically operates as the owner mode to transmit radio waves.
  • FIG. 3 is a sequence diagram for explaining a communication method in the communication system shown in FIG.
  • step 1 the communication devices 100-2 to 100-4 as client communication devices establish a Wi-Fi connection with the communication device 100-1 as an owner communication device.
  • FIG. 4 is a diagram showing a connection form of the wireless network 200 in which Wi-Fi connection is established with the communication device 100-1 as the owner communication device.
  • the connection between the communication device 100-1 as the owner communication device and the communication devices 100-2 to 100-4 is established.
  • the communication device 100-1 and the communication devices 100-2 to 100-4 are connected by a solid line to show the connection, but this connection is not a wired connection but a wireless connection.
  • each measurement unit 110 of each of communication devices 100-1 to 100-4 measures the reception intensity of radio waves transmitted from other communication devices, and creates a list of measurement results (radio wave intensity list). And stored in the storage unit 130.
  • Radio waves are transmitted from the communication devices 100-1 to 100-4 when they are periodically operated in the owner mode.
  • the radio wave includes SSID (Service Set Identifier) used in the wireless network 200 and MAC (Media Access Control) address assigned to each of the communication devices 100-1 to 100-4.
  • the source of the transmitted radio wave can be identified.
  • FIG. 5 is a diagram showing an example of a radio wave intensity list created by each of the communication devices 100-1 to 100-4.
  • each of the communication devices 100-1 to 100-4 has a radio wave intensity list created from the results measured by the measurement unit 110.
  • the measurement result of the reception intensity of the radio wave transmitted from communication apparatus 100-2 is “90”, and the reception of the radio wave transmitted from communication apparatus 100-3 is received.
  • the measurement result of the strength is “70”
  • the measurement result of the reception strength of the radio wave transmitted from the communication device 100-4 is “60”
  • the priority is given from the higher measurement result. ing. That is, the priority is in the order of the communication device 100-2, the communication device 100-3, and the communication device 100-4.
  • the measurement result of the reception intensity of the radio wave transmitted from the communication apparatus 100-1 is “90”, and the radio wave intensity transmitted from the communication apparatus 100-3.
  • the measurement result of the received signal strength is “40”
  • the measurement result of the received signal strength of the radio wave transmitted from the communication device 100-4 is “30”
  • the priority is higher from the higher measurement result. Has been granted. That is, the priority is in the order of the communication device 100-1, the communication device 100-3, and the communication device 100-4.
  • the measurement result of the reception intensity of the radio wave transmitted from the communication apparatus 100-1 is “70”, and the radio wave intensity transmitted from the communication apparatus 100-2.
  • the measurement result of the received signal strength is “40”
  • the measurement result of the received signal strength of the radio wave transmitted from the communication device 100-4 is “50”
  • the priority is higher from the higher measurement result. Has been granted. That is, the priority is in the order of the communication device 100-1, the communication device 100-4, and the communication device 100-2.
  • the measurement result of the reception intensity of the radio wave transmitted from the communication device 100-1 is “60”, and the radio wave transmitted from the communication device 100-2.
  • the measurement result of the received signal strength is “30”
  • the measurement result of the received signal strength of the radio wave transmitted from the communication device 100-3 is “50”
  • the priority is higher from the higher measurement result. Has been granted. That is, the priority is in the order of the communication device 100-1, the communication device 100-3, and the communication device 100-2.
  • step 3 the communication apparatuses 100-2 to 100-4 as client communication apparatuses transmit the radio wave intensity list from the notification unit 160 to the communication apparatus 100-1, thereby measuring the received radio wave intensity. To the communication device 100-1.
  • the communication device 100-1 that has received the radio wave intensity list stores the received radio wave intensity list in the storage unit 130.
  • candidate determination unit 150 of communication device 100-1 determines an owner candidate communication device based on the radio wave intensity list.
  • This determination method has the highest priority in the radio wave intensity lists of the communication apparatuses 100-2 to 100-4 except for the radio wave reception intensity from the communication apparatus 100-1 that is the owner communication apparatus (reception of radio waves). The one with the highest intensity) is extracted from each radio wave intensity list, and the communication device with the largest number is determined as the owner candidate communication device.
  • the specific determination method will be described by taking as an example the case where the radio wave intensity lists created by the communication devices 100-2 to 100-4 are those shown in FIG.
  • the one with the highest priority (highest radio wave strength) excluding the reception strength of radio waves from the communication device 100-1 is the communication device 100-3.
  • the one with the highest priority (highest radio wave intensity) excluding the radio wave reception strength from the communication device 100-1 is the communication device 100-4. It is.
  • the one with the highest priority (highest radio wave intensity) excluding the radio wave reception intensity from the communication apparatus 100-1 is the communication apparatus 100-3. It is. Therefore, since the number of communication devices 100-3 is 2 and the number of communication devices 100-4 is 1, the candidate determining unit 150 determines the communication device 100-3 as an owner candidate communication device.
  • the communication having the highest average radio wave reception intensity except for the radio wave reception intensity from the communication apparatus 100-1 as the owner communication apparatus may be determined as an owner candidate communication device.
  • the communication device 100-3 has the highest average value. Therefore, candidate determination unit 150 determines communication device 100-3 as an owner candidate communication device.
  • the notification unit 160 of the communication device 100-1 notifies the determined owner candidate communication device to the communication devices 100-2 to 100-4. Specifically, the notification unit 160 transmits to the communication devices 100-2 to 100-4, as owner candidate information, a signal indicating that the owner candidate communication device to be the next owner communication device is the communication device 100-3.
  • the communication devices 100-2 to 100-4 store the owner candidate information transmitted from the communication device 100-1 in the storage unit 130.
  • steps 2 to 5 may be periodically repeated, or may be performed at a predetermined timing.
  • step 6 the connection unit 140 of the communication devices 100-2 and 100-4 stores the communication device stored as the owner candidate communication device. A Wi-Fi connection is established with 100-3.
  • FIG. 6 is a diagram illustrating an example of a state where communication between the owner communication device and the client communication device becomes impossible.
  • FIG. 7 is a diagram illustrating an example of a state when the owner candidate communication device and the client communication device are connected after communication between the owner communication device and the client communication device is disabled.
  • step 6 when communication is not possible between the communication device 100-1 that is the owner communication device and the communication devices 100-2 to 100-4 that are the client communication devices, the process of step 6 is performed. As shown in FIG. 7, a communication device 100-3 that is an owner candidate communication device and communication devices 100-2 and 100-4 that are client communication devices are connected.
  • steps 2 to 5 is performed in the communication devices 100-2 to 100-4.
  • the connection between the owner candidate communication device and the client communication device is not established, but the owner communication device and the client A connection between the owner candidate communication device and the client communication device may be established in the background while communication with the communication device is possible.
  • the communication interruption period can be shortened.
  • the processing performed by each component provided in each of the communication devices 100-1 to 100-4 may be performed by a logic circuit that is produced according to the purpose.
  • a computer program (hereinafter referred to as a program) in which processing contents are described as a procedure is recorded on a recording medium readable by each of the communication devices 100-1 to 100-4, and the program recorded on the recording medium is communicated.
  • the devices 100-1 to 100-4 may be read and executed.
  • the recording media readable by each of the communication devices 100-1 to 100-4 include transferable recording media such as a floppy (registered trademark) disk, a magneto-optical disk, a DVD, and a CD, as well as the communication devices 100-1 to 100-4.
  • Reference numeral 100-4 indicates a memory such as a ROM and a RAM, an HDD, and the like built in each.
  • the program recorded on the recording medium is read by a CPU (not shown) provided in each of the communication devices 100-1 to 100-4, and the same processing as described above is performed under the control of the CPU.
  • the CPU operates as a computer that executes a program read from a recording medium on which the program is recorded.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

A measurement unit (110) measures the strength of reception of radio waves from other communication devices. When the communication device is operating in client mode, a notification unit (160) sends a notification of the result of the measurement by the measurement unit (110) to an owner communication device, which is a communication device among the other communication devices that is operating in owner mode. When the communication device is operating in owner mode, a candidate determination unit (150) determines an owner candidate communication device from amongst the other communication devices on the basis of the notification of the measurement result sent from other communication devices, and the notification unit (160) sends a notification of the owner candidate communication device determined by the candidate determination unit (150) to other communication devices. When the communication device is operating in client mode, when communication with the owner communication device is no longer possible, a connection unit (140) establishes a connection with the owner candidate communication device for which a notification has been sent from the owner communication device.

Description

通信装置Communication device
 本発明は、通信を行う通信装置、通信システム、通信方法およびプログラムに関し、特に無線通信を行う通信装置、通信システム、通信方法およびプログラムに関する。 The present invention relates to a communication device, a communication system, a communication method, and a program for performing communication, and more particularly to a communication device, a communication system, a communication method, and a program for performing wireless communication.
 一般的な無線通信を行う形態の一例として、有線ネットワークと接続する無線アクセスポイントと、その無線アクセスポイントを介して有線ネットワークと接続する無線クライアント装置とから構成される形態が挙げられる(例えば、特許文献1参照。)。 As an example of a form for performing general wireless communication, a form configured by a wireless access point connected to a wired network and a wireless client device connected to the wired network via the wireless access point (for example, a patent) Reference 1).
 このような形態においては、1つの無線アクセスポイントと、その無線アクセスポイントと無線通信可能な領域に存在する無線クライアント装置とで、1つの無線ネットワークを構成する。 In such a form, one wireless network is configured by one wireless access point and a wireless client device existing in an area where wireless communication with the wireless access point is possible.
 また、同様な形態として、Wi-Fi Directといった、アドホック無線ネットワークが挙げられる。このWi-Fi Directにおいては、当該ネットワークに参加する無線通信装置のうちの1つが、アクセスポイント機能を具備するグループオーナーとなり、他の無線通信装置(以下、クライアントと称する)と直接接続される。また、クライアントは、他のクライアントと通信を行う際は、グループオーナーを介して通信を行う。 Also, as a similar form, there is an ad hoc wireless network such as Wi-Fi Direct. In this Wi-Fi Direct, one of the wireless communication devices participating in the network is a group owner having an access point function, and is directly connected to another wireless communication device (hereinafter referred to as a client). In addition, when a client communicates with another client, the client communicates via the group owner.
特開2006-165623号公報JP 2006-165623 A
 しかしながら、上述したアドホックネットワークにおいては、グループオーナーが障害発生等で通信ができなくなった場合、そのネットワークに参加しているクライアントは、他のクライアントとの間で通信を行うことができなくなってしまうという問題点がある。 However, in the above-described ad hoc network, when a group owner becomes unable to communicate due to a failure or the like, a client participating in the network cannot communicate with other clients. There is a problem.
 本発明の目的は、上述した課題を解決する通信装置、通信システム、通信方法およびプログラムを提供することである。 An object of the present invention is to provide a communication device, a communication system, a communication method, and a program that solve the above-described problems.
 本発明の通信装置は、
 アクセスポイントとして動作するオーナーモードとクライアントとして動作するクライアントモードとを具備し、他の通信装置との間で無線通信を行う通信装置であって、
 前記他の通信装置が発信する電波の受信強度を測定する測定部と、
 前記クライアントモードで動作している場合、前記測定部が測定した結果を、前記他の通信装置のうちの前記オーナーモードで動作しているオーナー通信装置へ通知する通知部と、
 前記クライアントモードで動作している場合、前記オーナー通信装置との間で通信ができなくなると、前記オーナー通信装置から通知されていたオーナー候補通信装置へ接続する接続部と、
 前記オーナーモードで動作している場合、前記他の通信装置から前記測定結果が通知されると、該測定結果に基づいて、前記他の通信装置の中から前記オーナー候補通信装置を決定する候補決定部とを有し、
 前記通知部は、前記オーナーモードで動作している場合、前記候補決定部が決定したオーナー候補通信装置を前記他の通信装置へ通知する。
The communication device of the present invention
A communication device having an owner mode that operates as an access point and a client mode that operates as a client, and performs wireless communication with other communication devices,
A measurement unit for measuring the reception intensity of the radio wave transmitted by the other communication device;
When operating in the client mode, a notification unit that notifies the owner communication device operating in the owner mode of the other communication devices, the measurement result of the measurement unit,
When operating in the client mode, when it becomes impossible to communicate with the owner communication device, a connection unit for connecting to the owner candidate communication device notified from the owner communication device,
When operating in the owner mode, when the measurement result is notified from the other communication device, candidate determination for determining the owner candidate communication device from the other communication devices based on the measurement result And
When the notification unit is operating in the owner mode, the notification unit notifies the other communication device of the owner candidate communication device determined by the candidate determination unit.
 また、本発明の通信システムは、
 アクセスポイントとして動作するオーナーモードとクライアントとして動作するクライアントモードとを具備し、他の通信装置との間で無線通信を行う通信装置を複数有する通信システムであって、
 前記通信装置は、
 前記他の通信装置が発信する電波の受信強度を測定する測定部と、
 前記クライアントモードで動作している場合、前記測定部が測定した結果を、前記他の通信装置のうちの前記オーナーモードで動作しているオーナー通信装置へ通知する通知部と、
 前記クライアントモードで動作している場合、前記オーナー通信装置との間で通信ができなくなると、前記オーナー通信装置から通知されていたオーナー候補通信装置へ接続する接続部と、
 前記オーナーモードで動作している場合、前記他の通信装置から前記測定結果が通知されると、該測定結果に基づいて、前記他の通信装置の中から前記オーナー候補通信装置を決定する候補決定部とを有し、
 前記通知部は、前記オーナーモードで動作している場合、前記候補決定部が決定したオーナー候補通信装置を前記他の通信装置へ通知する。
The communication system of the present invention
A communication system having an owner mode that operates as an access point and a client mode that operates as a client, and having a plurality of communication devices that perform wireless communication with other communication devices,
The communication device
A measurement unit for measuring the reception intensity of the radio wave transmitted by the other communication device;
When operating in the client mode, a notification unit that notifies the owner communication device operating in the owner mode of the other communication devices, the measurement result of the measurement unit,
When operating in the client mode, when it becomes impossible to communicate with the owner communication device, a connection unit for connecting to the owner candidate communication device notified from the owner communication device,
When operating in the owner mode, when the measurement result is notified from the other communication device, candidate determination for determining the owner candidate communication device from the other communication devices based on the measurement result And
When the notification unit is operating in the owner mode, the notification unit notifies the other communication device of the owner candidate communication device determined by the candidate determination unit.
 また、本発明の通信方法は、
 アクセスポイントとして動作するオーナーモードとクライアントとして動作するクライアントモードとを具備し、他の通信装置との間で無線通信を行う通信装置を複数有する通信システムにおける通信方法であって、
 前記通信装置が、前記他の通信装置が発信する電波の受信強度を測定する処理と、
 前記通信装置のうちの前記クライアントモードで動作しているクライアント通信装置が、前記測定した結果を、前記通信装置のうちの前記オーナーモードで動作しているオーナー通信装置へ通知する処理と、
 前記オーナー通信装置が、前記クライアント通信装置から通知された測定結果に基づいて、前記クライアント通信装置の中からオーナー候補通信装置を決定する処理と、
 前記オーナー通信装置が、前記決定したオーナー候補通信装置を前記クライアント通信装置へ通知する処理と、
 前記クライアント通信装置が、前記オーナー通信装置との間で通信ができなくなった場合、前記オーナー通信装置から通知されたオーナー候補通信装置へ接続する処理とを行う。
Further, the communication method of the present invention includes:
A communication method in a communication system having an owner mode that operates as an access point and a client mode that operates as a client, and having a plurality of communication devices that perform wireless communication with other communication devices,
A process in which the communication device measures reception intensity of a radio wave transmitted by the other communication device;
A process in which the client communication device operating in the client mode of the communication devices notifies the measurement result to the owner communication device operating in the owner mode of the communication device;
The owner communication device determines an owner candidate communication device from the client communication device based on the measurement result notified from the client communication device;
The owner communication device notifies the client communication device of the determined owner candidate communication device;
When the client communication device becomes unable to communicate with the owner communication device, the client communication device performs a process of connecting to the owner candidate communication device notified from the owner communication device.
 また、本発明のプログラムは、
 アクセスポイントとして動作するオーナーモードとクライアントとして動作するクライアントモードとを具備し、他の通信装置との間で無線通信を行う通信装置に実行させるためのプログラムであって、
 前記他の通信装置が発信する電波の受信強度を測定する手順と、
 前記クライアントモードで動作している場合、前記測定した結果を、前記他の通信装置のうちの前記オーナーモードで動作しているオーナー通信装置へ通知する手順と、
 前記オーナーモードで動作している場合、前記他の通信装置から前記測定結果が通知されると、該測定結果に基づいて、前記他の通信装置の中からオーナー候補通信装置を決定する手順と、
 前記オーナーモードで動作している場合、前記決定したオーナー候補通信装置を前記他の通信装置へ通知する手順と、
 前記クライアントモードで動作している場合、前記オーナー通信装置との間で通信ができなくなると、前記オーナー通信装置から通知されたオーナー候補通信装置へ接続する手順とを実行させる。
The program of the present invention is
A program for causing a communication device to perform wireless communication with another communication device, including an owner mode that operates as an access point and a client mode that operates as a client,
A procedure for measuring the reception intensity of radio waves transmitted by the other communication device;
When operating in the client mode, a procedure for notifying the measured result to the owner communication device operating in the owner mode among the other communication devices;
When operating in the owner mode, when the measurement result is notified from the other communication device, a procedure for determining an owner candidate communication device from the other communication devices based on the measurement result;
When operating in the owner mode, a procedure for notifying the determined other candidate communication device to the other communication device;
When operating in the client mode, when communication with the owner communication device becomes impossible, a procedure for connecting to the owner candidate communication device notified from the owner communication device is executed.
 以上説明したように、本発明においては、グループオーナーが、通信ができなくなった場合であっても、そのネットワークに参加している他の通信装置間で最適な通信環境を構築して通信を行うことができる。 As described above, in the present invention, even when a group owner becomes unable to communicate, an optimum communication environment is established between other communication devices participating in the network to perform communication. be able to.
本発明の通信システムの実施の一形態を示す図である。It is a figure which shows one Embodiment of the communication system of this invention. 図1に示した通信装置の内部構成の一例を示す図である。It is a figure which shows an example of an internal structure of the communication apparatus shown in FIG. 図1に示した通信システムにおける通信方法を説明するためのシーケンス図である。It is a sequence diagram for demonstrating the communication method in the communication system shown in FIG. 通信装置をオーナー通信装置として、Wi-Fi接続が確立された無線ネットワークの接続形態を示す図である。It is a figure which shows the connection form of the wireless network in which the Wi-Fi connection was established by making a communication apparatus into an owner communication apparatus. 通信装置がそれぞれ作成した電波強度リストの一例を示す図である。It is a figure which shows an example of the electromagnetic wave intensity | strength list | wrist which each communication apparatus produced. オーナー通信装置とクライアント通信装置との間で、通信ができなくなったときの様子の一例を示す図である。It is a figure which shows an example of a mode when communication becomes impossible between an owner communication apparatus and a client communication apparatus. オーナー通信装置とクライアント通信装置との間で、通信ができなくなった後に、オーナー候補通信装置とクライアント通信装置とが接続されたときの様子の一例を示す図である。It is a figure which shows an example of a mode when an owner candidate communication apparatus and a client communication apparatus are connected after communication becomes impossible between an owner communication apparatus and a client communication apparatus.
 以下に、本発明の実施の形態について図面を参照して説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
 図1は、本発明の通信システムの実施の一形態を示す図である。 FIG. 1 is a diagram showing an embodiment of a communication system according to the present invention.
 本形態は図1に示すように、複数の通信装置100-1~100-4から構成された無線ネットワーク200である。 As shown in FIG. 1, the present embodiment is a wireless network 200 composed of a plurality of communication devices 100-1 to 100-4.
 通信装置100-1~100-4は、無線通信機能を具備する通信装置である。また、通信装置100-1~100-4は、アクセスポイントとして動作するオーナーモードと、クライアントとして動作するクライアントモードとを具備する。この2つの動作モードについては、後述する。なお、通信装置100-1~100-4は、オーナーモードとクライアントモードとのいずれかのモードで動作するものであっても良いが、この場合、クライアントモードで動作しているときに定期的にオーナーモードで動作する。また、通信装置100-1~100-4は、常時、オーナーモードとクライアントモードとが同時に動作しているものであっても良い。 The communication devices 100-1 to 100-4 are communication devices having a wireless communication function. Communication apparatuses 100-1 to 100-4 each have an owner mode that operates as an access point and a client mode that operates as a client. These two operation modes will be described later. Note that the communication devices 100-1 to 100-4 may operate in either the owner mode or the client mode. In this case, however, the communication devices 100-1 to 100-4 periodically operate when operating in the client mode. Operates in owner mode. Further, the communication devices 100-1 to 100-4 may always operate at the same time in the owner mode and the client mode.
 なお、図1に示した通信システムにおいては、通信装置が4台である場合を例に挙げて示しているが、3台や、5台以上であっても良い。 In the communication system shown in FIG. 1, a case where there are four communication devices is shown as an example, but three or five or more communication devices may be used.
 図2は、図1に示した通信装置100-1の内部構成の一例を示す図である。なお、図1に示した通信装置100-2~100-4の内部構成についても、図2に示した通信装置100-1の内部構成と同じである。 FIG. 2 is a diagram illustrating an example of an internal configuration of the communication apparatus 100-1 illustrated in FIG. The internal configuration of communication apparatuses 100-2 to 100-4 shown in FIG. 1 is the same as the internal configuration of communication apparatus 100-1 shown in FIG.
 図1に示した通信装置100-1には図2に示すように、測定部110と、受信部120と、記憶部130と、接続部140と、候補決定部150と、通知部160とが設けられている。なお、図2には、通信装置100-1が具備する構成要素のうち、本発明に関わる構成要素のみを示した。 As shown in FIG. 2, the communication device 100-1 shown in FIG. 1 includes a measurement unit 110, a reception unit 120, a storage unit 130, a connection unit 140, a candidate determination unit 150, and a notification unit 160. Is provided. FIG. 2 shows only the components related to the present invention among the components included in the communication device 100-1.
 測定部110は、他の通信装置100-2~100-4が発信する電波の受信強度を測定する。具体的な測定方法は特に規定しないが、例えば、SN比やエラーレート等を測定し、通信品質を算出することで、通信品質が高いものを電波の受信強度の強いものとするものであっても良い。 The measuring unit 110 measures the reception intensity of radio waves transmitted from the other communication devices 100-2 to 100-4. Although a specific measurement method is not particularly defined, for example, by measuring the S / N ratio, error rate, etc., and calculating the communication quality, the one with high communication quality is made strong in radio wave reception strength. Also good.
 また、測定部は、他の通信装置100-2~100-4が定期的にオーナーモードで動作して発信した電波の強度を測定する。 Also, the measurement unit measures the strength of radio waves transmitted by other communication devices 100-2 to 100-4 periodically operating in the owner mode.
 受信部120は、他の通信装置100-2~100-4から送信された信号を受信する。具体的には、受信部120は、通信装置100-1がオーナーモードで動作している場合、通信装置100-2~100-4から送信されてきた信号を受信する。また、受信部120は、通信装置100-1がクライアントモードで動作している場合は、オーナーモードで動作している通信装置(以下、オーナー通信装置と称する)から送信されてきた信号を受信する。 The receiving unit 120 receives signals transmitted from the other communication devices 100-2 to 100-4. Specifically, the receiving unit 120 receives signals transmitted from the communication devices 100-2 to 100-4 when the communication device 100-1 operates in the owner mode. In addition, when communication device 100-1 operates in the client mode, reception unit 120 receives a signal transmitted from a communication device operating in owner mode (hereinafter referred to as an owner communication device). .
 記憶部130は、測定部110が測定した電波の受信強度を電波強度リストとして記憶する。また、記憶部130は、通信装置100-1がオーナーモードで動作している場合、通信装置100-2~100-4から送信され、受信部120で受信した電波強度リストを通信装置100-2~100-4ごとに記憶する。 The storage unit 130 stores the reception intensity of the radio wave measured by the measurement unit 110 as a radio wave intensity list. Further, the storage unit 130 stores the radio wave intensity list transmitted from the communication devices 100-2 to 100-4 and received by the receiving unit 120 when the communication device 100-1 operates in the owner mode. Store every 100-4.
 接続部140は、通信装置100-1がクライアントモードで動作している場合、オーナー通信装置との間で通信ができなくなると、オーナー通信装置からすでに通知されていたオーナー候補通信装置へ接続する。ここで、接続部140は、通信装置100-1がオーナー通信装置と通信ができなくなったかどうかを判別する方法は、特に規定しない。例えば、オーナー通信装置がクライアントモードで動作している通信装置(以下、クライアント通信装置と称する)へ、定期的に所定の信号を送信し、その信号を受信部120が受信しなくなった場合に、オーナー通信装置と通信ができなくなったと判別するものであっても良い。また、オーナー通信装置からすでに通知されていたオーナー候補通信装置の情報は、受信部120にて受信され、記憶部130に記憶されている。 When the communication device 100-1 is operating in the client mode, the connection unit 140 connects to the owner candidate communication device that has already been notified from the owner communication device when communication with the owner communication device becomes impossible. Here, the connection unit 140 does not particularly define a method for determining whether or not the communication device 100-1 can no longer communicate with the owner communication device. For example, when the owner communication device periodically transmits a predetermined signal to a communication device (hereinafter referred to as a client communication device) operating in the client mode, and the receiving unit 120 does not receive the signal, It may be determined that communication with the owner communication device is no longer possible. Further, the information on the owner candidate communication device already notified from the owner communication device is received by the receiving unit 120 and stored in the storage unit 130.
 候補決定部150は、通信装置100-1がオーナーモードで動作している場合、通信装置100-2~100-4から電波の受信強度の測定結果が通知されると、その測定結果に基づいて、通信装置100-2~100-4の中から次のオーナー通信装置となるオーナー候補通信装置を決定する。ここで、通信装置100-2~100-4から通知された電波の受信強度の測定結果は、記憶部130に記憶される。そして、候補決定部150は、記憶部130に記憶されている通信装置100-2~100-4から通知された電波の受信強度の測定結果を読み出して、オーナー候補通信装置を決定する。 When communication device 100-1 is operating in the owner mode, candidate determination unit 150, when notified of the measurement results of the radio wave reception intensity from communication devices 100-2 to 100-4, based on the measurement results Then, an owner candidate communication device to be the next owner communication device is determined from among the communication devices 100-2 to 100-4. Here, the measurement result of the radio wave reception intensity notified from the communication devices 100-2 to 100-4 is stored in the storage unit 130. Then, candidate determination unit 150 reads out the measurement result of the radio wave reception intensity notified from communication devices 100-2 to 100-4 stored in storage unit 130, and determines an owner candidate communication device.
 このオーナー候補通信装置の決定方法については、後述する。 This owner candidate communication device determination method will be described later.
 通知部160は、通信装置100-1がクライアントモードで動作している場合、測定部110が測定した結果をオーナー通信装置へ通知する。ここで、測定結果は、記憶部130に電波強度リストとして記憶されているため、通知部160は、記憶部130から当該電波強度リストを読み出して、オーナー通信装置へ通知(送信)する。 When the communication device 100-1 is operating in the client mode, the notification unit 160 notifies the owner communication device of the result measured by the measurement unit 110. Here, since the measurement result is stored in the storage unit 130 as a radio wave intensity list, the notification unit 160 reads out the radio wave intensity list from the storage unit 130 and notifies (transmits) it to the owner communication device.
 また、通知部160は、通信装置100-1がオーナーモードで動作している場合、候補決定部150が決定したオーナー候補通信装置を通信装置100-2~100-4へ通知する。 In addition, when the communication device 100-1 operates in the owner mode, the notification unit 160 notifies the communication device 100-2 to 100-4 of the owner candidate communication device determined by the candidate determination unit 150.
 また、通知部160は、クライアントモードで動作している場合、定期的にオーナーモードとしても動作して電波を発信する。 In addition, when the notification unit 160 operates in the client mode, the notification unit 160 also periodically operates as the owner mode to transmit radio waves.
 以下に、図1に示した通信システムにおける通信方法について説明する。ここでは、最初に通信装置100-1がオーナー通信装置に設定されている場合を例に挙げて説明する。なお、最初にどの通信装置がオーナー通信装置となるかの決定方法は、どのような方法でも良い。 Hereinafter, a communication method in the communication system shown in FIG. 1 will be described. Here, a case will be described as an example where the communication device 100-1 is initially set as the owner communication device. Note that any method may be used for determining which communication device is the owner communication device first.
 図3は、図1に示した通信システムにおける通信方法を説明するためのシーケンス図である。 FIG. 3 is a sequence diagram for explaining a communication method in the communication system shown in FIG.
 まず、ステップ1にて、クライアント通信装置である通信装置100-2~100-4は、オーナー通信装置である通信装置100-1との間でWi-Fi接続を確立する。 First, in step 1, the communication devices 100-2 to 100-4 as client communication devices establish a Wi-Fi connection with the communication device 100-1 as an owner communication device.
 図4は、通信装置100-1をオーナー通信装置として、Wi-Fi接続が確立された無線ネットワーク200の接続形態を示す図である。 FIG. 4 is a diagram showing a connection form of the wireless network 200 in which Wi-Fi connection is established with the communication device 100-1 as the owner communication device.
 図4に示すように、オーナー通信装置である通信装置100-1と通信装置100-2~100-4との間の接続が確立されている。なお、図4においては、接続を示すために通信装置100-1と通信装置100-2~100-4とを実線で結んでいるが、この接続は有線接続ではなく、無線接続である。 As shown in FIG. 4, the connection between the communication device 100-1 as the owner communication device and the communication devices 100-2 to 100-4 is established. In FIG. 4, the communication device 100-1 and the communication devices 100-2 to 100-4 are connected by a solid line to show the connection, but this connection is not a wired connection but a wireless connection.
 その後、ステップ2にて、通信装置100-1~100-4それぞれの測定部110は、他の通信装置から発信される電波の受信強度を測定し、測定結果のリスト(電波強度リスト)を作成し、記憶部130に記憶しておく。通信装置100-1~100-4からは、定期的にオーナーモードで動作したときに電波が発信されている。その電波には、無線ネットワーク200にて使用されるSSID(Service Set Identifier)や通信装置100-1~100-4それぞれに付与されているMAC(Media Access Control)アドレスが含まれており、これらにより、発信された電波の発信元を識別することができる。 Thereafter, in step 2, each measurement unit 110 of each of communication devices 100-1 to 100-4 measures the reception intensity of radio waves transmitted from other communication devices, and creates a list of measurement results (radio wave intensity list). And stored in the storage unit 130. Radio waves are transmitted from the communication devices 100-1 to 100-4 when they are periodically operated in the owner mode. The radio wave includes SSID (Service Set Identifier) used in the wireless network 200 and MAC (Media Access Control) address assigned to each of the communication devices 100-1 to 100-4. The source of the transmitted radio wave can be identified.
 図5は、通信装置100-1~100-4がそれぞれ作成した電波強度リストの一例を示す図である。 FIG. 5 is a diagram showing an example of a radio wave intensity list created by each of the communication devices 100-1 to 100-4.
 図5に示すように、各通信装置100-1~100-4は、測定部110が測定した結果から作成した電波強度リストを保有している。 As shown in FIG. 5, each of the communication devices 100-1 to 100-4 has a radio wave intensity list created from the results measured by the measurement unit 110.
 通信装置100-1が作成した電波強度リストを参照すると、通信装置100-2から発信された電波の受信強度の測定結果が「90」であり、通信装置100-3から発信された電波の受信強度の測定結果が「70」であり、通信装置100-4から発信された電波の受信強度の測定結果が「60」であり、その測定結果が高い方から優先度(優先順位)が付与されている。つまり、優先度は、通信装置100-2、通信装置100-3、通信装置100-4の順になっている。 Referring to the radio wave intensity list created by communication apparatus 100-1, the measurement result of the reception intensity of the radio wave transmitted from communication apparatus 100-2 is “90”, and the reception of the radio wave transmitted from communication apparatus 100-3 is received. The measurement result of the strength is “70”, the measurement result of the reception strength of the radio wave transmitted from the communication device 100-4 is “60”, and the priority (priority) is given from the higher measurement result. ing. That is, the priority is in the order of the communication device 100-2, the communication device 100-3, and the communication device 100-4.
 また、通信装置100-2が作成した電波強度リストを参照すると、通信装置100-1から発信された電波の受信強度の測定結果が「90」であり、通信装置100-3から発信された電波の受信強度の測定結果が「40」であり、通信装置100-4から発信された電波の受信強度の測定結果が「30」であり、その測定結果が高い方から優先度(優先順位)が付与されている。つまり、優先度は、通信装置100-1、通信装置100-3、通信装置100-4の順になっている。 Further, referring to the radio wave intensity list created by the communication apparatus 100-2, the measurement result of the reception intensity of the radio wave transmitted from the communication apparatus 100-1 is “90”, and the radio wave intensity transmitted from the communication apparatus 100-3. The measurement result of the received signal strength is “40”, the measurement result of the received signal strength of the radio wave transmitted from the communication device 100-4 is “30”, and the priority (priority) is higher from the higher measurement result. Has been granted. That is, the priority is in the order of the communication device 100-1, the communication device 100-3, and the communication device 100-4.
 また、通信装置100-3が作成した電波強度リストを参照すると、通信装置100-1から発信された電波の受信強度の測定結果が「70」であり、通信装置100-2から発信された電波の受信強度の測定結果が「40」であり、通信装置100-4から発信された電波の受信強度の測定結果が「50」であり、その測定結果が高い方から優先度(優先順位)が付与されている。つまり、優先度は、通信装置100-1、通信装置100-4、通信装置100-2の順になっている。 Further, referring to the radio wave intensity list created by the communication apparatus 100-3, the measurement result of the reception intensity of the radio wave transmitted from the communication apparatus 100-1 is “70”, and the radio wave intensity transmitted from the communication apparatus 100-2. The measurement result of the received signal strength is “40”, the measurement result of the received signal strength of the radio wave transmitted from the communication device 100-4 is “50”, and the priority (priority) is higher from the higher measurement result. Has been granted. That is, the priority is in the order of the communication device 100-1, the communication device 100-4, and the communication device 100-2.
 また、通信装置100-4が作成した電波強度リストを参照すると、通信装置100-1から発信された電波の受信強度の測定結果が「60」であり、通信装置100-2から発信された電波の受信強度の測定結果が「30」であり、通信装置100-3から発信された電波の受信強度の測定結果が「50」であり、その測定結果が高い方から優先度(優先順位)が付与されている。つまり、優先度は、通信装置100-1、通信装置100-3、通信装置100-2の順になっている。 Further, referring to the radio wave intensity list created by the communication device 100-4, the measurement result of the reception intensity of the radio wave transmitted from the communication device 100-1 is “60”, and the radio wave transmitted from the communication device 100-2. The measurement result of the received signal strength is “30”, the measurement result of the received signal strength of the radio wave transmitted from the communication device 100-3 is “50”, and the priority (priority) is higher from the higher measurement result. Has been granted. That is, the priority is in the order of the communication device 100-1, the communication device 100-3, and the communication device 100-2.
 なお、図5において、各リストに示した電波の受信強度の数値は、電波強度リストの説明において互いの強弱関係が分かりやすいように示したものであり、実際の電波の受信強度の数値とは異なるものである。 In addition, in FIG. 5, the numerical value of the radio wave reception intensity shown in each list is shown in the explanation of the radio wave intensity list so that the mutual strength relationship can be easily understood. Is different.
 続いて、ステップ3にて、クライアント通信装置である通信装置100-2~100-4は、その通知部160から電波強度リストを通信装置100-1へ送信することで、測定した電波の受信強度を通信装置100-1へ通知する。 Subsequently, in step 3, the communication apparatuses 100-2 to 100-4 as client communication apparatuses transmit the radio wave intensity list from the notification unit 160 to the communication apparatus 100-1, thereby measuring the received radio wave intensity. To the communication device 100-1.
 すると、電波強度リストを受信した通信装置100-1は、受信した電波強度リストを記憶部130に記憶する。そして、ステップ4にて、通信装置100-1の候補決定部150は、その電波強度リストに基づいて、オーナー候補通信装置を決定する。 Then, the communication device 100-1 that has received the radio wave intensity list stores the received radio wave intensity list in the storage unit 130. In step 4, candidate determination unit 150 of communication device 100-1 determines an owner candidate communication device based on the radio wave intensity list.
 この決定方法は、各通信装置100-2~100-4の電波強度リストにて、オーナー通信装置である通信装置100-1からの電波の受信強度を除いて優先度が最も高い(電波の受信強度が最も高い)ものを、各電波強度リストから抽出し、その数が最も多い通信装置をオーナー候補通信装置として決定する。 This determination method has the highest priority in the radio wave intensity lists of the communication apparatuses 100-2 to 100-4 except for the radio wave reception intensity from the communication apparatus 100-1 that is the owner communication apparatus (reception of radio waves). The one with the highest intensity) is extracted from each radio wave intensity list, and the communication device with the largest number is determined as the owner candidate communication device.
 通信装置100-2~100-4が作成した電波強度リストが図5に示したものである場合を例に挙げて、その具体的な決定方法について説明する。 The specific determination method will be described by taking as an example the case where the radio wave intensity lists created by the communication devices 100-2 to 100-4 are those shown in FIG.
 通信装置100-2が作成した電波強度リストのうち、通信装置100-1からの電波の受信強度を除いて優先度が最も高い(電波強度が最も高い)ものは、通信装置100-3である。また、通信装置100-3が作成した電波強度リストのうち、通信装置100-1からの電波の受信強度を除いて優先度が最も高い(電波強度が最も高い)ものは、通信装置100-4である。また、通信装置100-4が作成した電波強度リストのうち、通信装置100-1からの電波の受信強度を除いて優先度が最も高い(電波強度が最も高い)ものは、通信装置100-3である。したがって、通信装置100-3の数が2であり、通信装置100-4の数が1であるため、候補決定部150は、通信装置100-3をオーナー候補通信装置として決定する。 Of the list of radio wave strengths created by the communication device 100-2, the one with the highest priority (highest radio wave strength) excluding the reception strength of radio waves from the communication device 100-1 is the communication device 100-3. . Of the radio wave intensity lists created by the communication device 100-3, the one with the highest priority (highest radio wave intensity) excluding the radio wave reception strength from the communication device 100-1 is the communication device 100-4. It is. Of the radio wave intensity lists created by the communication apparatus 100-4, the one with the highest priority (highest radio wave intensity) excluding the radio wave reception intensity from the communication apparatus 100-1 is the communication apparatus 100-3. It is. Therefore, since the number of communication devices 100-3 is 2 and the number of communication devices 100-4 is 1, the candidate determining unit 150 determines the communication device 100-3 as an owner candidate communication device.
 また、各通信装置100-2~100-4の電波強度リストにて、オーナー通信装置である通信装置100-1からの電波の受信強度を除いて、電波の受信強度の平均値が最も高い通信装置をオーナー候補通信装置として決定するものであっても良い。 Further, in the radio wave intensity list of each of the communication apparatuses 100-2 to 100-4, the communication having the highest average radio wave reception intensity except for the radio wave reception intensity from the communication apparatus 100-1 as the owner communication apparatus. The device may be determined as an owner candidate communication device.
 図5に示した例では、通信装置100-2が発信する電波の受信強度の平均値は、
(40+30)÷2=35
であり、通信装置100-3が発信する電波の受信強度の平均値は、
(40+50)÷2=45
であり、通信装置100-4が発信する電波の受信強度の平均値は、
(30+50)÷2=40
であり、平均値が最も高いのは、通信装置100-3となる。そのため、候補決定部150は、通信装置100-3をオーナー候補通信装置として決定する。
In the example shown in FIG. 5, the average value of the reception intensity of the radio wave transmitted by the communication device 100-2 is
(40 + 30) ÷ 2 = 35
The average value of the reception intensity of the radio wave transmitted by the communication device 100-3 is
(40 + 50) ÷ 2 = 45
The average value of the reception intensity of the radio wave transmitted by the communication device 100-4 is
(30 + 50) ÷ 2 = 40
The communication device 100-3 has the highest average value. Therefore, candidate determination unit 150 determines communication device 100-3 as an owner candidate communication device.
 オーナー候補通信装置が決定すると、ステップ5にて、通信装置100-1の通知部160は、決定したオーナー候補通信装置を通信装置100-2~100-4へ通知する。具体的には、次にオーナー通信装置となるオーナー候補通信装置が通信装置100-3である旨を示す信号をオーナー候補情報として通知部160が通信装置100-2~100-4へ送信する。 When the owner candidate communication device is determined, in step 5, the notification unit 160 of the communication device 100-1 notifies the determined owner candidate communication device to the communication devices 100-2 to 100-4. Specifically, the notification unit 160 transmits to the communication devices 100-2 to 100-4, as owner candidate information, a signal indicating that the owner candidate communication device to be the next owner communication device is the communication device 100-3.
 通信装置100-2~100-4は、通信装置100-1から送信されてきたオーナー候補情報を記憶部130に記憶する。 The communication devices 100-2 to 100-4 store the owner candidate information transmitted from the communication device 100-1 in the storage unit 130.
 なお、ステップ2~5の処理は、定期的に繰り返されるものであっても良いし、所定のタイミングで行われるものであっても良い。 Note that the processing in steps 2 to 5 may be periodically repeated, or may be performed at a predetermined timing.
 その後、通信装置100-1との間で通信が不通となった際、ステップ6にて、通信装置100-2,100-4の接続部140は、オーナー候補通信装置として記憶している通信装置100-3との間でWi-Fi接続を確立する。 Thereafter, when communication with the communication device 100-1 is interrupted, in step 6, the connection unit 140 of the communication devices 100-2 and 100-4 stores the communication device stored as the owner candidate communication device. A Wi-Fi connection is established with 100-3.
 図6は、オーナー通信装置とクライアント通信装置との間で、通信ができなくなったときの様子の一例を示す図である。 FIG. 6 is a diagram illustrating an example of a state where communication between the owner communication device and the client communication device becomes impossible.
 図7は、オーナー通信装置とクライアント通信装置との間で、通信ができなくなった後に、オーナー候補通信装置とクライアント通信装置とが接続されたときの様子の一例を示す図である。 FIG. 7 is a diagram illustrating an example of a state when the owner candidate communication device and the client communication device are connected after communication between the owner communication device and the client communication device is disabled.
 図6に示すように、オーナー通信装置である通信装置100-1と、クライアント通信装置である通信装置100-2~100-4との間で通信ができなくなると、ステップ6の処理が行われ、図7に示すように、オーナー候補通信装置であった通信装置100-3と、クライアント通信装置である通信装置100-2,100-4とが接続される。 As shown in FIG. 6, when communication is not possible between the communication device 100-1 that is the owner communication device and the communication devices 100-2 to 100-4 that are the client communication devices, the process of step 6 is performed. As shown in FIG. 7, a communication device 100-3 that is an owner candidate communication device and communication devices 100-2 and 100-4 that are client communication devices are connected.
 そして、通信装置100-2~100-4にて、ステップ2~5の処理が行われる。 Then, the processing of steps 2 to 5 is performed in the communication devices 100-2 to 100-4.
 なお、上述したようにオーナー通信装置とクライアント通信装置との間で通信ができなくなった後に、オーナー候補通信装置とクライアント通信装置との間で接続の確立を行うものではなく、オーナー通信装置とクライアント通信装置との間で通信ができている状態で、そのバックグラウンドでオーナー候補通信装置とクライアント通信装置との接続を確立しておくものであっても良い。この場合は、接続の再確立時のタイムロスがなくなり、オーナー通信装置との間の通信不可発生時に、より円滑なネットワーク切り替えを行うことができる。さらに、通信の中断期間も短縮することができる。 As described above, after the communication between the owner communication device and the client communication device becomes impossible, the connection between the owner candidate communication device and the client communication device is not established, but the owner communication device and the client A connection between the owner candidate communication device and the client communication device may be established in the background while communication with the communication device is possible. In this case, there is no time loss when re-establishing the connection, and smoother network switching can be performed when communication with the owner communication device is not possible. Furthermore, the communication interruption period can be shortened.
 このように、グループオーナーが、通信ができなくなった場合であっても、そのネットワークに参加している他の通信装置の中から、新たなグループオーナーを決定し、通信を行うため、他の通信装置間で通信を続けることができる。さらに、電波の受信強度に基づいて、新たなグループオーナーを決定するため、最適なグループオーナーを決定することができる。 In this way, even if the group owner becomes unable to communicate, other communication devices are used to determine the new group owner from other communication devices participating in the network and perform communication. Communication between devices can be continued. Furthermore, since the new group owner is determined based on the radio wave reception intensity, the optimum group owner can be determined.
 上述した通信装置100-1~100-4それぞれに設けられた各構成要素が行う処理は、目的に応じてそれぞれ作製された論理回路で行うようにしても良い。また、処理内容を手順として記述したコンピュータプログラム(以下、プログラムと称する)を通信装置100-1~100-4それぞれにて読取可能な記録媒体に記録し、この記録媒体に記録されたプログラムを通信装置100-1~100-4それぞれに読み込ませ、実行するものであっても良い。通信装置100-1~100-4それぞれにて読取可能な記録媒体とは、フロッピー(登録商標)ディスク、光磁気ディスク、DVD、CDなどの移設可能な記録媒体の他、通信装置100-1~100-4それぞれに内蔵されたROM、RAM等のメモリやHDD等を指す。この記録媒体に記録されたプログラムは、通信装置100-1~100-4それぞれに設けられたCPU(不図示)にて読み込まれ、CPUの制御によって、上述したものと同様の処理が行われる。ここで、CPUは、プログラムが記録された記録媒体から読み込まれたプログラムを実行するコンピュータとして動作するものである。 The processing performed by each component provided in each of the communication devices 100-1 to 100-4 may be performed by a logic circuit that is produced according to the purpose. In addition, a computer program (hereinafter referred to as a program) in which processing contents are described as a procedure is recorded on a recording medium readable by each of the communication devices 100-1 to 100-4, and the program recorded on the recording medium is communicated. The devices 100-1 to 100-4 may be read and executed. The recording media readable by each of the communication devices 100-1 to 100-4 include transferable recording media such as a floppy (registered trademark) disk, a magneto-optical disk, a DVD, and a CD, as well as the communication devices 100-1 to 100-4. Reference numeral 100-4 indicates a memory such as a ROM and a RAM, an HDD, and the like built in each. The program recorded on the recording medium is read by a CPU (not shown) provided in each of the communication devices 100-1 to 100-4, and the same processing as described above is performed under the control of the CPU. Here, the CPU operates as a computer that executes a program read from a recording medium on which the program is recorded.
 以上、実施の形態を参照して本願発明を説明したが、本願発明は上記実施の形態に限定されるものではない。本願発明の構成や詳細には、本願発明のスコープ内で当業者が理解し得る様々な変更をすることができる。 As mentioned above, although this invention was demonstrated with reference to embodiment, this invention is not limited to the said embodiment. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.
 この出願は、2011年12月22日に出願された日本出願特願2011-281355を基礎とする優先権を主張し、その開示の全てをここに取り込む。 This application claims priority based on Japanese Patent Application No. 2011-281355 filed on Dec. 22, 2011, the entire disclosure of which is incorporated herein.

Claims (8)

  1.  アクセスポイントとして動作するオーナーモードとクライアントとして動作するクライアントモードとを具備し、他の通信装置との間で無線通信を行う通信装置であって、
     前記他の通信装置が発信する電波の受信強度を測定する測定部と、
     前記クライアントモードで動作している場合、前記測定部が測定した結果を、前記他の通信装置のうちの前記オーナーモードで動作しているオーナー通信装置へ通知する通知部と、
     前記クライアントモードで動作している場合、前記オーナー通信装置との間で通信ができなくなると、前記オーナー通信装置から通知されていたオーナー候補通信装置へ接続する接続部と、
     前記オーナーモードで動作している場合、前記他の通信装置から前記測定結果が通知されると、該測定結果に基づいて、前記他の通信装置の中から前記オーナー候補通信装置を決定する候補決定部とを有し、
     前記通知部は、前記オーナーモードで動作している場合、前記候補決定部が決定したオーナー候補通信装置を前記他の通信装置へ通知する通信装置。
    A communication device having an owner mode that operates as an access point and a client mode that operates as a client, and performs wireless communication with other communication devices,
    A measurement unit for measuring the reception intensity of the radio wave transmitted by the other communication device;
    When operating in the client mode, a notification unit that notifies the owner communication device operating in the owner mode of the other communication devices, the measurement result of the measurement unit,
    When operating in the client mode, when it becomes impossible to communicate with the owner communication device, a connection unit for connecting to the owner candidate communication device notified from the owner communication device,
    When operating in the owner mode, when the measurement result is notified from the other communication device, candidate determination for determining the owner candidate communication device from the other communication devices based on the measurement result And
    When the notification unit is operating in the owner mode, the notification unit notifies the other communication device of the owner candidate communication device determined by the candidate determination unit.
  2.  請求項1に記載の通信装置において、
     前記クライアントモードで動作しているとき、定期的にオーナーモードとしても動作し、
     前記通知部は、前記オーナーモードとして動作しているときに電波を発信し、
     前記測定部は、前記他の通信装置が前記オーナーモードで動作して発信した電波の強度を測定することを特徴とする通信装置。
    The communication device according to claim 1,
    When operating in the client mode, also periodically operates as the owner mode,
    The notification unit emits radio waves when operating as the owner mode,
    The communication device is characterized in that the measurement unit measures the intensity of a radio wave transmitted by the other communication device operating in the owner mode.
  3.  請求項1または請求項2に記載の通信装置において、
     前記候補決定部は、前記他の通信装置から通知された測定結果のうち、前記オーナー通信装置からの電波の受信強度を除いて、電波の受信強度が最も高い通信装置の数が最も多い通信装置を前記オーナー候補通信装置として決定することを特徴とする通信装置。
    The communication device according to claim 1 or 2,
    The candidate determination unit is the communication device having the highest number of communication devices having the highest radio wave reception intensity, excluding the radio wave reception strength from the owner communication device, among the measurement results notified from the other communication devices. Is determined as the owner candidate communication device.
  4.  請求項1または請求項2に記載の通信装置において、
     前記候補決定部は、前記他の通信装置から通知された測定結果のうち、前記オーナー通信装置からの電波の受信強度を除いて、電波の受信強度の平均値が最も高い通信装置を前記オーナー候補通信装置として決定することを特徴とする通信装置。
    The communication device according to claim 1 or 2,
    The candidate determination unit determines a communication device having the highest average radio wave reception intensity from the measurement results notified from the other communication device, except for the radio wave reception intensity from the owner communication device. A communication apparatus characterized by being determined as a communication apparatus.
  5.  請求項1から4のいずれか1項に記載の通信装置において、
     前記接続部は、前記オーナー通信装置との間で通信をしている状態で、前記オーナー通信装置から通知されていたオーナー候補通信装置への接続を確立することを特徴とする通信装置。
    The communication device according to any one of claims 1 to 4,
    The communication unit establishes a connection to an owner candidate communication device notified from the owner communication device while communicating with the owner communication device.
  6.  請求項1から5のいずれか1項に記載の通信装置を複数有する通信システム。 A communication system having a plurality of communication devices according to any one of claims 1 to 5.
  7.  アクセスポイントとして動作するオーナーモードとクライアントとして動作するクライアントモードとを具備し、他の通信装置との間で無線通信を行う通信装置を複数有する通信システムにおける通信方法であって、
     前記通信装置が、前記他の通信装置が発信する電波の受信強度を測定する処理と、
     前記通信装置のうちの前記クライアントモードで動作しているクライアント通信装置が、前記測定した結果を、前記通信装置のうちの前記オーナーモードで動作しているオーナー通信装置へ通知する処理と、
     前記オーナー通信装置が、前記クライアント通信装置から通知された測定結果に基づいて、前記クライアント通信装置の中からオーナー候補通信装置を決定する処理と、
     前記オーナー通信装置が、前記決定したオーナー候補通信装置を前記クライアント通信装置へ通知する処理と、
     前記クライアント通信装置が、前記オーナー通信装置との間で通信ができなくなった場合、前記オーナー通信装置から通知されたオーナー候補通信装置へ接続する処理とを行う通信方法。
    A communication method in a communication system having an owner mode that operates as an access point and a client mode that operates as a client, and having a plurality of communication devices that perform wireless communication with other communication devices,
    A process in which the communication device measures reception intensity of a radio wave transmitted by the other communication device;
    A process in which the client communication device operating in the client mode of the communication devices notifies the measurement result to the owner communication device operating in the owner mode of the communication device;
    The owner communication device determines an owner candidate communication device from the client communication device based on the measurement result notified from the client communication device;
    The owner communication device notifies the client communication device of the determined owner candidate communication device;
    A communication method for performing processing of connecting to an owner candidate communication device notified from the owner communication device when the client communication device becomes unable to communicate with the owner communication device.
  8.  アクセスポイントとして動作するオーナーモードとクライアントとして動作するクライアントモードとを具備し、他の通信装置との間で無線通信を行う通信装置に、
     前記他の通信装置が発信する電波の受信強度を測定する手順と、
     前記クライアントモードで動作している場合、前記測定した結果を、前記他の通信装置のうちの前記オーナーモードで動作しているオーナー通信装置へ通知する手順と、
     前記オーナーモードで動作している場合、前記他の通信装置から前記測定結果が通知されると、該測定結果に基づいて、前記他の通信装置の中からオーナー候補通信装置を決定する手順と、
     前記オーナーモードで動作している場合、前記決定したオーナー候補通信装置を前記他の通信装置へ通知する手順と、
     前記クライアントモードで動作している場合、前記オーナー通信装置との間で通信ができなくなると、前記オーナー通信装置から通知されたオーナー候補通信装置へ接続する手順とを実行させるためのプログラム。
    A communication device that has an owner mode that operates as an access point and a client mode that operates as a client, and performs wireless communication with other communication devices.
    A procedure for measuring the reception intensity of radio waves transmitted by the other communication device;
    When operating in the client mode, a procedure for notifying the measured result to the owner communication device operating in the owner mode among the other communication devices;
    When operating in the owner mode, when the measurement result is notified from the other communication device, a procedure for determining an owner candidate communication device from the other communication devices based on the measurement result;
    When operating in the owner mode, a procedure for notifying the determined other candidate communication device to the other communication device;
    A program for executing a procedure of connecting to an owner candidate communication device notified from the owner communication device when communication with the owner communication device becomes impossible when operating in the client mode.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016009990A (en) * 2014-06-24 2016-01-18 ブラザー工業株式会社 Communication device
JP2018117224A (en) * 2017-01-17 2018-07-26 富士通株式会社 Wireless communication control method, wireless communication control device, and wireless communication control program

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007081811A (en) * 2005-09-14 2007-03-29 Mitsubishi Electric Corp Method for managing construction of network and communication terminal
JP2007104402A (en) * 2005-10-05 2007-04-19 Canon Inc Communication system, communication method, and program
JP2007295122A (en) * 2006-04-21 2007-11-08 Mitsubishi Electric Corp System of detecting fault in management terminal
JP2011244151A (en) * 2010-05-17 2011-12-01 Sony Corp Radio communication device, radio communication method, program and radio communication system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007081811A (en) * 2005-09-14 2007-03-29 Mitsubishi Electric Corp Method for managing construction of network and communication terminal
JP2007104402A (en) * 2005-10-05 2007-04-19 Canon Inc Communication system, communication method, and program
JP2007295122A (en) * 2006-04-21 2007-11-08 Mitsubishi Electric Corp System of detecting fault in management terminal
JP2011244151A (en) * 2010-05-17 2011-12-01 Sony Corp Radio communication device, radio communication method, program and radio communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016009990A (en) * 2014-06-24 2016-01-18 ブラザー工業株式会社 Communication device
JP2018117224A (en) * 2017-01-17 2018-07-26 富士通株式会社 Wireless communication control method, wireless communication control device, and wireless communication control program

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