WO2015008714A1 - 制御装置および通信端末 - Google Patents
制御装置および通信端末 Download PDFInfo
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- WO2015008714A1 WO2015008714A1 PCT/JP2014/068641 JP2014068641W WO2015008714A1 WO 2015008714 A1 WO2015008714 A1 WO 2015008714A1 JP 2014068641 W JP2014068641 W JP 2014068641W WO 2015008714 A1 WO2015008714 A1 WO 2015008714A1
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- communication terminal
- communication
- terminal
- control device
- direct communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/14—Direct-mode setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/60—Context-dependent security
- H04W12/63—Location-dependent; Proximity-dependent
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/20—Manipulation of established connections
- H04W76/23—Manipulation of direct-mode connections
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W92/00—Interfaces specially adapted for wireless communication networks
- H04W92/16—Interfaces between hierarchically similar devices
- H04W92/18—Interfaces between hierarchically similar devices between terminal devices
Definitions
- This technology relates to a control device and a communication terminal. Specifically, the present technology relates to a control device that controls switching to direct communication between terminals.
- a terminal can wirelessly connect to a base station, and many network services including the Internet can be used via a provider's network. Further, it is possible to use services by connecting terminals such as a telephone call, file exchange, and a game.
- connection between the public network and the terminal is wireless (communication using this connection is referred to as “network communication”)
- network communication communication using this connection is referred to as “network communication”
- the number of terminals connected to the public network increases, so the capacity of the wireless section
- the service quality is degraded (for example, connection is not possible, the communication speed is decreased, etc.).
- data of many terminals is processed, and there is a problem of insufficient capacity and line congestion in the base station and the core network.
- communication is performed via a base station and a core network even if the service is based on a connection between nearby terminals.
- Patent Document 1 describes a method of switching from communication via a public network to direct communication.
- a method of determining the terminal that performs direct communication by estimating the distance between the terminals from the position information of each terminal estimated by the base station, by estimating the electric field strength between the terminals when communicating directly from this estimated distance, Judging whether direct communication is possible.
- the purpose of this technology is to be able to satisfactorily switch to direct communication.
- connection request receiving unit that receives a request for connection with the second communication terminal from the first communication terminal;
- a confirmation request transmitter for transmitting a confirmation request as to whether direct communication is possible to the first communication terminal and the second communication terminal;
- a confirmation result receiving unit for receiving confirmation results from the first communication terminal and / or the second communication terminal;
- a determination unit that determines whether direct communication between the first terminal and the second terminal is possible based on the confirmation result;
- the control apparatus includes a switching request transmission unit that transmits a request for switching to direct communication to the first communication terminal and the second communication terminal.
- connection request receiving unit receives a request for connection with the second communication terminal from the first communication terminal.
- the number of second communication terminals is not limited to one, but may be plural.
- the confirmation request transmission unit transmits a confirmation request as to whether direct communication is possible to the first communication terminal and the second communication terminal.
- the information processing apparatus further includes a method selection unit that selects a direct communication wireless method common to the first communication terminal and the second communication terminal from information in the database, and the confirmation request transmission unit includes the first communication terminal and the second communication terminal.
- a direct communication wireless method common to the terminals is selected, a confirmation request as to whether direct communication is possible can be transmitted to the first communication terminal and the second communication terminal.
- direct communication wireless system common to the first communication terminal and the second communication terminal direct communication between the first communication terminal and the second communication terminal is originally impossible. Therefore, it can be avoided that a confirmation request as to whether or not direct communication is possible is sent to the first communication terminal and the second communication terminal.
- the confirmation request transmitted by the confirmation request transmission unit is inserted with information for confirming whether direct communication is possible, including at least information on the direct communication wireless method and identification information of the counterpart terminal.
- the confirmation request may include timing information indicating communication timing for confirming whether direct communication is possible in the first communication terminal and the second communication terminal.
- the confirmation request may include a parameter specific to the selected direct communication radio system.
- the confirmation result receiving unit receives confirmation results from the first communication terminal and / or the second communication terminal.
- the confirmation result may be a measured value of the electric field strength at the time of reception of a signal transmitted from the counterpart communication terminal.
- the determination unit determines whether direct communication between the first communication terminal and the second communication terminal is possible based on the confirmation result. For example, the received electric field strength is determined by comparing with the minimum received electric field strength.
- the switching request transmission unit determines that direct communication is possible, a request for switching to direct communication is transmitted to the first communication terminal and the second communication terminal.
- the switching request may include at least information on the direct connection method and identification information of the counterpart terminal.
- the switching request may include timing information indicating the timing of switching to direct communication.
- the switching request may include a parameter specific to the selected direct communication radio system.
- the base station is simultaneously connected from the first communication terminal and the second communication terminal.
- a parent device determination unit for determining a parent device may be further provided, and the switching request transmitted by the switching request transmission unit may include information on the determined parent device. This facilitates selection and setting of the master unit on the communication terminal side.
- a confirmation request as to whether direct communication is possible is transmitted to the communication terminal side, and direct communication is possible based on the confirmation result sent from the communication terminal side in response to this request.
- a request for switching to direct communication is transmitted to the communication terminal side. For this reason, it is possible to avoid a situation in which communication cannot actually be performed when switching to direct communication, and switching to direct communication can be performed satisfactorily.
- a proximity confirmation unit that confirms whether the first communication terminal and the second communication terminal are in the vicinity
- the confirmation request transmission unit includes the first communication terminal and the second communication terminal.
- a confirmation request as to whether direct communication is possible can be transmitted to the first communication terminal and the second communication terminal.
- the proximity confirmation unit determines whether the first communication terminal and the second communication terminal are connected to the same base station, or whether they are connected to the same base station and a neighboring base station. It may be configured to check whether the first communication terminal and the second communication terminal are in the vicinity.
- a confirmation request receiving unit that receives a confirmation request whether or not direct communication between the own terminal and another communication terminal is possible from the control device;
- a confirmation unit that confirms whether direct communication between the own terminal and the other communication terminal is possible,
- a confirmation result transmitting unit for transmitting the confirmation result to the control device;
- a switching request receiving unit for receiving a switching request for switching from the control device to direct communication of the own terminal and the other communication terminal;
- the communication terminal includes a communication control unit that switches the own terminal to direct communication with the other communication terminal.
- the confirmation request receiving unit receives a confirmation request from the control device as to whether direct communication between the own terminal and another communication terminal is possible.
- the control device may further include a communication request transmission unit that transmits a request for communication with another communication terminal.
- a confirmation request is sent from the control device.
- the confirmation request may include information for confirming whether or not direct communication is possible, including at least information on the direct communication wireless system and identification information of other communication terminals.
- the confirmation request may include timing information indicating communication timing for confirming whether direct communication with another communication terminal is possible.
- the confirmation request may include a parameter specific to the direct communication wireless system.
- the confirmation result is transmitted to the control device by the confirmation result transmission unit.
- the confirmation result may include information on the measured received electric field strength or information indicating that the received electric field strength could not be measured.
- the switching request receiving unit receives a switching request for switching from the control device to direct communication between the own terminal and another communication terminal. When the switching request is received by the switching control unit, the own terminal is switched to direct communication with another communication terminal.
- the switching request may include at least information on the direct communication wireless method and identification information of other communication terminals.
- the switching request may include timing information indicating the timing of switching to direct communication.
- the switching request may include parameters specific to the direct communication radio system.
- the switching request may further include information on a parent device that simultaneously connects with the base station determined from the own terminal and other communication terminals. This facilitates selection and setting of the master unit when performing direct communication.
- FIG. 1 shows a configuration example of a communication system 10 as an embodiment.
- the communication system 10 includes communication terminals 101 to 105, a base station 201, a core network 301, and a network service 401.
- Communication terminals 101 to 105 are wirelessly connected to base station 201.
- the “communication terminal” is appropriately referred to as “terminal”.
- the communication terminal 101 communicates via the base station 201 and the core network 301.
- the communication terminal 101 communicates with the communication terminal 102, the communication is performed via the base station 201 and the core network 301.
- FIG. 2 shows a configuration example of the communication terminal 100 (communication terminals 101 to 105).
- the communication terminal 100 includes a plurality of communication units 601 to 603 in the illustrated example.
- One communication unit for example, the communication unit 601 is a communication unit such as 3G (3rd generation generation: third generation mobile phone) or LTE (Long Termination Evolution) used for connection with the base station 201.
- Other communication units for example, communication units 602 to 603 are communication units such as a wireless LAN and Bluetooth used for direct communication.
- the communication terminal 100 has a control unit 604.
- the control unit 604 controls wireless communication via the communication units 601 to 603 and performs cooperative control between the communication units.
- FIG. 3 shows a configuration example of the control device 200 (base station 201 and core network 301).
- the control device 200 includes a communication unit 701, a control unit 702, and a database 703.
- the communication unit 701 is a communication unit used for connection with a terminal.
- the control unit 702 controls wireless communication via the communication unit 701 and also exchanges information with the database 703.
- the database 703 stores terminal information.
- the relationship between the base station 201 and the core network 301 in FIG. 1 and the communication unit 701, control unit 702, and database 703 in FIG. 3 is implementation-dependent.
- the communication unit 701 and the control unit 702 are arranged in the base station 201.
- the database 703 may be arranged in the core network 301.
- a method for the control device to grasp the direct communication wireless system of the terminal will be described.
- the sequence diagram of FIG. 4 shows processing when the control device 200 grasps the direct communication wireless method of the communication terminal 100. Similar processing is applied to the communication terminals 101 to 105 in the communication system 10 of FIG.
- the communication terminal 100 (communication terminals 101 to 105) is connected to the control device 200 after power-on, and enters a standby state (step 801). Detailed description of this procedure is omitted because it is a general procedure for a cellular phone.
- the control device 200 knows the ID of the communication terminal 100 in the standby state. For example, IDs unique to the terminal such as IMEI and IMSI are applicable.
- the control device 200 confirms the direct communication wireless system information of the communication terminal 100 stored in the database 703 based on this ID (step 802).
- the control device 200 requests the communication terminal 100 to report the direct communication wireless method. (Step 803).
- the terminal 100 requested to report reports the corresponding direct communication wireless system (step 804).
- the information to be reported includes the wireless system, the corresponding frequency, the processing capability, the transmission power, the minimum receivable electric field strength, the availability of use, the remaining battery level, and the like.
- the control device 200 that has received the report from the communication terminal 100 stores the information in the database 703 (step 805).
- a report is requested from the control device 200 to the communication terminal 100.
- the report may be reported from the communication terminal 100.
- the communication terminal 100 reports the change.
- the control device 200 that has received the report updates the information stored in the database 703.
- a method by which the control device 200 determines whether direct communication between terminals is possible will be described. First, a determination method using two terminals will be described. The sequence diagram of FIG. 5 shows processing in which the control device 200 determines whether direct communication between terminals is possible. Here, a case where the two terminals are the communication terminal 101 and the communication terminal 102 is shown.
- the communication terminal 101 requests the control device 200 to connect to the communication terminal 102 (step 901).
- this connection request is made, for example, when the communication terminal 101 makes a call to the communication terminal 102, when transmitting text data such as an email, or when requesting to start a text messaging service such as chat Etc. are assumed.
- the control device 200 confirms (detects) that the corresponding terminals are in the vicinity (step 902). For example, whether or not it is in the vicinity is confirmed by whether or not it is connected to the same base station. Also, for example, whether or not the mobile station is in the vicinity is confirmed by whether or not it is connected to either the same base station or a nearby base station.
- An adjacent base station is, for example, a base station within a radius of 1 km, and is not limited to an adjacent base station.
- the control device 200 checks the information in the database 703 based on the ID of each terminal (the ID of the communication terminal that requested connection and the ID of the communication terminal of the connection partner), and selects a direct communication radio system common to each terminal (Step 903). Then, the control device 200 transmits a request for confirming whether or not direct communication is possible using the selected direct communication wireless method to each terminal (step 904).
- this confirmation request information for confirming whether each terminal can directly communicate is inserted.
- this confirmation request includes the selected direct communication radio system, measurement time (start time and measurement period), measurement target terminal ID, parameters specific to the direct communication radio system, and the like.
- the measurement time indicates a timing for confirming whether direct communication is possible between terminals.
- the measurement target is the communication terminal 101 that has requested connection and the communication terminal 102 of the connection partner.
- the measurement target terminal ID is, for example, a Mac address (MAC Address), a device name (Device Name), or the like.
- Parameters specific to the direct communication wireless system include, for example, frequency used, role designation in the wireless LAN (whether it is Access point or Station or Wi-Fi Direct), an identifier (SSID) in the wireless LAN, and a role in Bluetooth (BT) Designation (terminal that issues Inquiry Command or terminal that responds to standby).
- Bluetooth is a registered trademark.
- the terminal that has received the communicability confirmation request from the control device 200 confirms whether direct communication is possible based on the information included in the request (step 905).
- the confirmation method varies depending on the selected direct communication radio system. The following examples are described. (Example 1) When the roles of AP and STA are specified in the wireless LAN, (Example 2) When Wi-Fi Direct is specified in the wireless LAN, (Example 3) When BT is selected (Example 4) When Mesh is selected
- Example 1 A case where the wireless LAN is selected as the direct communication wireless system and the roles of AP and STA are designated will be described. For example, it is assumed that the communication terminal 101 is an AP (Access Point) and the communication terminal 102 is an STA (Station).
- AP Access Point
- STA Selection
- the communication terminal 101 operates as an AP for a specified measurement time. Specifically, a signal called a beacon is periodically transmitted at a specified frequency. This beacon is given an SSID (Service Set Identifier) which is an identifier in the wireless LAN, and can be read by the receiving terminal. The beacon is also given the MAC address (MAC ⁇ Address) of the communication terminal 101 and can be read by the receiving terminal as well.
- SSID Service Set Identifier
- MAC ⁇ Address MAC ⁇ Address
- the communication terminal 102 operates as a STA for a specified measurement time. Specifically, a beacon is received at a specified frequency, and the electric field strength is measured. The communication terminal 102 can determine that a beacon having a specified Mac address and SSID among the received beacons is a measurement target terminal.
- the communication terminal 102 reports the measured electric field strength to the control device 200 as a confirmation result after the specified measurement time has elapsed. Note that if the communication terminal 102 cannot measure the electric field strength because the other party is not found within the specified measurement time, after the specified measurement time elapses, the confirmation result is “not measured”. Report to the control device 200.
- the control device 200 compares the reported electric field strength with the minimum receivable electric field strength stored in the database 703, and determines whether direct communication is possible. (Step 906). For example, when the reported electric field strength is larger than the minimum receivable electric field strength of both the communication terminal 101 and the communication terminal 102 stored in the database 703, the control device 200 determines that direct communication is possible. Note that when the communication terminal 102 reports that “the measurement could not be performed”, the control device 200 immediately determines that direct communication is not possible.
- the communication terminal 102 measures and reports the received electric field strength.
- the STA transmits a probe request to the AP, and the AP returns the response.
- a procedure for transmitting a probe response to the STA is defined. This procedure is called active scan.
- the communication terminal 101 that is the AP measures the received electric field strength when receiving the probe request, and the communication terminal 102 that is the STA. Can measure the received electric field strength when receiving the probe response.
- each of the communication terminal 101 and the communication terminal 102 reports the measured electric field strength to the control device 200 as a confirmation result after the designated measurement time has elapsed. If the communication terminal 101 and the communication terminal 102 cannot measure the electric field strength because the other party is not found within the designated measurement time, the measurement result is “measurement” after the designated measurement time has elapsed. It reports to the control device 200 that it was not possible.
- the control device 200 compares the electric field strength reported from each terminal with the minimum receivable electric field strength stored in the database, and directly It is determined whether communication is possible (step 906). For example, the control device 200 stores the electric field strength reported by the communication terminal 101 in the database 703, and the electric field strength reported by the communication terminal 102 is stored in the database 703. It is determined that direct communication is possible when it is larger than the minimum receivable electric field strength of the communication terminal 102 being used. Note that the control apparatus 200 determines that direct communication is not possible immediately when at least one of the communication terminals 101 and 102 reports that “the measurement could not be performed”.
- the communication terminal 101 can reversely set the role designation in the wireless LAN, which is one of the parameters in the confirmation request in Step 904, by the communication terminal 101 and the communication terminal 102.
- it can be reported to the control device 200 as a confirmation result that “the measurement could not be performed”.
- the control apparatus 200 can obtain information on the received electric field intensity measured from both the communication terminal 101 and the communication terminal 102 or information indicating that “the measurement could not be performed”.
- the control device 200 determines that direct communication is not possible immediately when at least one of the communication terminals 101 and 102 reports that “the measurement could not be performed”.
- Example 2 A case where a wireless LAN is selected as the direct communication wireless system and Wi-Fi Direct is specified will be described.
- Wi-Fi Direct the communication terminal 101 and the communication terminal 102 have an equivalent role.
- the specification stipulates that each terminal transmits a probe request and a terminal that receives the probe request returns a probe response. Therefore, it is possible to measure the received electric field strength at both the communication terminal 101 and the communication terminal 102.
- each of the communication terminal 101 and the communication terminal 102 reports the measured electric field strength to the control device 200 as a confirmation result after the designated measurement time has elapsed. If the communication terminal 101 and the communication terminal 102 cannot measure the electric field strength because the other party is not found within the designated measurement time, the measurement result is “measurement” after the designated measurement time has elapsed. It reports to the control device 200 that it was not possible.
- the control device 200 compares the electric field strength reported from each terminal with the minimum receivable electric field strength stored in the database 703, It is determined whether direct communication is possible (step 906).
- the determination criteria in this case are the same as when the measured field strength is reported to the control device 200 from both the communication terminal 101 and the communication terminal 102 when the above-described wireless LAN is selected. Note that the control apparatus 200 determines that direct communication is not possible immediately when at least one of the communication terminals 101 and 102 reports that “the measurement could not be performed”.
- Example 3 A case where BT is selected as the direct communication wireless system will be described.
- the BT it is defined in the specification that one terminal transmits an inquiry command and a terminal that receives the inquiry command returns a response.
- the communication terminal 101 and the communication terminal 102 can measure the received electric field strength by receiving the Inquiry Command and its response.
- each of the communication terminal 101 and the communication terminal 102 reports the measured electric field strength to the control device 200 as a confirmation result after the designated measurement time has elapsed. If the communication terminal 101 and the communication terminal 102 cannot measure the electric field strength because the other party is not found within the designated measurement time, the measurement result is “measurement” after the designated measurement time has elapsed. It reports to the control device 200 that it was not possible.
- the control device 200 compares the electric field strength reported from each terminal with the minimum receivable electric field strength stored in the database 703, It is determined whether direct communication is possible (step 906).
- the determination criteria in this case are the same as when the measured field strength is reported to the control device 200 from both the communication terminal 101 and the communication terminal 102 when the above-described wireless LAN is selected. Note that the control apparatus 200 determines that direct communication is not possible immediately when at least one of the communication terminals 101 and 102 reports that “the measurement could not be performed”.
- Example 4 A case where Mesh is selected as the direct communication wireless system will be described.
- the specification defines that each terminal periodically transmits a beacon.
- Each terminal can receive a beacon of another terminal in a time when it does not transmit a beacon. Therefore, each of the communication terminal 101 and the communication terminal 102 can measure the received electric field strength.
- each of the communication terminal 101 and the communication terminal 102 reports the measured electric field strength to the control device 200 as a confirmation result after the designated measurement time has elapsed. If the communication terminal 101 and the communication terminal 102 cannot measure the electric field strength because the other party is not found within the designated measurement time, the measurement result is “measurement” after the designated measurement time has elapsed. It reports to the control device 200 that it was not possible.
- the control device 200 compares the electric field strength reported from each terminal with the minimum receivable electric field strength stored in the database, and directly It is determined whether communication is possible (step 906).
- the determination criteria in this case are the same as when the measured field strength is reported to the control device 200 from both the communication terminal 101 and the communication terminal 102 when the above-described wireless LAN is selected. Note that the control apparatus 200 determines that direct communication is not possible immediately when at least one of the communication terminals 101 and 102 reports that “the measurement could not be performed”.
- the sequence diagram of FIG. 6 shows a process in which the control device 200 determines whether direct communication between terminals is possible.
- the communication terminal 101 requests the control device 200 to connect to the communication terminal 102 and the communication terminal 103 (step 1001).
- this connection request is made, for example, when the communication terminal 101 makes a three-party call to the communication terminal 102 and the communication terminal 103, or when a request is made to start a text messaging service such as chat with a plurality of people. Etc. are assumed.
- the control device 200 confirms (detects) that the corresponding terminals are in the vicinity (step 1002). For example, whether or not it is in the vicinity is confirmed by whether or not it is connected to the same base station. Also, for example, whether or not the mobile station is in the vicinity is confirmed by whether or not it is connected to either the same base station or a nearby base station.
- An adjacent base station is, for example, a base station within a radius of 1 km, and is not limited to an adjacent base station.
- the control device 200 checks the information in the database 703 based on the ID of each terminal (the ID of the communication terminal that requested connection and the ID of the communication terminal of the connection partner), and selects a direct communication radio system common to each terminal (Step 1003). Then, the control device 200 transmits a request for confirming whether or not direct communication is possible using the selected direct communication wireless method to each terminal (step 1004).
- this confirmation request information for confirming whether each terminal can directly communicate is inserted.
- this confirmation request includes the selected direct communication radio system, measurement time (start time and measurement period), measurement target terminal ID, parameters specific to the direct communication radio system, and the like.
- the measurement time indicates a timing for confirming whether direct communication is possible between terminals.
- the measurement target is the communication terminal 101 that has requested connection, and the communication terminal 102 and communication terminal 103 of the connection partner.
- the measurement target terminal ID is, for example, a Mac address (MAC Address), a device name (Device Name), or the like.
- Parameters specific to the direct communication wireless system include, for example, frequency used, role designation in the wireless LAN (whether it is Access point or Station or Wi-Fi Direct), an identifier (SSID) in the wireless LAN, and a role in Bluetooth (BT) Designation (terminal that issues Inquiry Command or terminal that responds to standby).
- the terminal that has received the communicability confirmation request from the control device 200 confirms whether direct communication is possible based on the information included in the request (step 1005).
- the confirmation method varies depending on the selected direct communication radio system. The following examples are described. (Example 1) When the roles of AP and STA are specified in the wireless LAN, (Example 2) When Wi-Fi Direct is specified in the wireless LAN, (Example 3) When BT is selected (Example 4) When Mesh is selected
- Example 1 A case where the wireless LAN is selected as the direct communication wireless system and the roles of AP and STA are designated will be described.
- the communication terminal 101 is an AP (Access Point) and the communication terminal 102 and the communication terminal 103 are STAs (Stations).
- the communication terminal 101 operates as an AP for a specified measurement time. Specifically, a signal called a beacon is periodically transmitted at a specified frequency. This beacon is given an SSID (Service Set Identifier) which is an identifier in the wireless LAN, and can be read by the receiving terminal. The beacon is also given the MAC address (MAC ⁇ Address) of the communication terminal 101 and can be read by the receiving terminal as well.
- SSID Service Set Identifier
- MAC ⁇ Address MAC ⁇ Address
- the communication terminal 102 and the communication terminal 103 operate as STAs for the designated measurement time. Specifically, a beacon is received at a specified frequency, and the electric field strength is measured. The communication terminal 102 and the communication terminal 103 can determine that a beacon having a specified Mac address and SSID among the received beacons is a measurement target terminal.
- the communication terminal 102 and the communication terminal 103 report the measured electric field strength to the control device 200 as a confirmation result after the designated measurement time has elapsed. If the communication terminal 102 and the communication terminal 103 cannot measure the electric field intensity because the other party is not found within the specified measurement time, the measurement result is “measurement” after the specified measurement time has elapsed. It reports to the control device 200 that it was not possible.
- the communication terminal 102 and the communication terminal 103 can measure the received electric field strength with the communication terminal 101.
- the role designation in the wireless LAN which is one of the parameters in the confirmation request in step 1004 is changed, the communication terminal 103 and the communication terminal 101 measure the received electric field strength with the communication terminal 102, and further the communication terminal 101
- the communication terminal 102 measures the received electric field strength with the communication terminal 103.
- each of the communication terminal 101, the communication terminal 102, and the communication terminal 103 measures the received electric field strength between the other two terminals.
- Each terminal reports the measured electric field strength or “not measured” to the control device 200 as a confirmation result.
- the control device 200 compares the reported electric field strength with the minimum receivable electric field strength stored in the database 703 to determine whether direct communication is possible. Judgment is made (step 1006).
- the control device 200 for example, has the smallest reported value of the electric field strength reported by the communication terminal 101 larger than the lowest receivable electric field strength of the communication terminal 101 and the smallest reported value of the electric field strength reported by the communication terminal 102. Is greater than the minimum receivable electric field strength of the communication terminal 102 and the smallest reported value of the electric field strengths reported by the terminal 103 is greater than the minimum receivable electric field strength of the communication terminal 103, it is determined that direct communication is possible. . Note that the control device 200 immediately determines that direct communication is not possible when at least one of the communication terminals reports that “the measurement could not be performed”.
- the role of the terminal is repeatedly changed and the measurement is performed.
- the STA transmits a probe request to the AP, and the AP returns the probe as a response.
- An active scan (Active scan) procedure is defined in which a response (probe response) is transmitted to the STA.
- the communication terminal 101 that is an AP receives a probe request from the communication terminal 102 and the communication terminal 103. Then, each of the received electric field strengths is measured, and the communication terminal 102 and the communication terminal 103, which are STAs, can also measure the received electric field strengths when receiving the probe response. .
- the control apparatus 200 receives a report of the received electric field strength from the communication terminal 101, the communication terminal 102, and the communication terminal 103 with a smaller number of confirmation requests than the above-described method in which three terminals are used as APs and the confirmation request is performed three times. It is possible. Specifically, it is possible to receive a report of received power intensity from the communication terminal 101, the communication terminal 102, and the communication terminal 103 by making two confirmation requests. In the case of three or more units (for example, N units), this method requires only (N-1) confirmation requests.
- the control device 200 compares the reported electric field strength with the minimum receivable electric field strength stored in the database 703, and determines whether direct communication is possible in the same manner as described above (step 1006).
- Example 2 A case where a wireless LAN is selected as the direct communication wireless system and Wi-Fi Direct is specified will be described.
- Wi-Fi Direct the communication terminal 101, the communication terminal 102, and the communication terminal 103 have an equivalent role.
- the specification stipulates that each terminal transmits a probe request and a terminal that receives the probe request returns a probe response. Therefore, the received electric field strength can be measured in all of the communication terminal 101, the communication terminal 102, and the communication terminal 103.
- each of the communication terminal 101, the communication terminal 102, and the communication terminal 103 reports the measured electric field strength to the control device 200 as a confirmation result after the specified measurement time has elapsed. If the communication terminal 101, the communication terminal 102, and the communication terminal 103 cannot measure the electric field intensity because the other party is not found within the specified measurement time, the confirmation result is obtained after the specified measurement time has elapsed. As a result, the control unit 200 is notified that “the measurement could not be performed”.
- the control device 200 compares the electric field strength reported from each terminal with the minimum receivable electric field strength stored in the database, and can directly communicate. Whether or not (step 1006).
- the determination criteria in this case are the same as when the measured electric field strength is reported from the communication terminal 101, the communication terminal 102, and the communication terminal 103 to the control device 200 when the above-described wireless LAN is selected. Note that the control device 200 immediately determines that direct communication is not possible when at least one of the communication terminals reports that “the measurement could not be performed”.
- Example 3 A case where BT is selected as the direct communication wireless system will be described.
- the BT it is defined in the specification that one terminal transmits an inquiry command and a terminal that receives the inquiry command returns a response.
- the communication terminal 101 transmits an Inquiry Command and the communication terminal 102 and the communication terminal 103 respond to each other, the communication terminal 101 can measure the received electric field strength with the communication terminal 102 and the communication terminal 103.
- the terminal 103 can measure the received electric field strength with the communication terminal 101.
- the communication terminal 102 or the communication terminal 103 As the terminal that transmits the Inquiry Command, all terminals can measure the received electric field strength with other terminals. .
- each of the communication terminal 101, the communication terminal 102, and the communication terminal 103 reports the measured electric field strength to the control device 200 as a confirmation result after the specified measurement time has elapsed. If the communication terminal 101, the communication terminal 102, and the communication terminal 103 cannot measure the electric field intensity because the other party is not found within the specified measurement time, the confirmation result is obtained after the specified measurement time has elapsed. As a result, the control unit 200 is notified that “the measurement could not be performed”.
- the control device 200 compares the field strength reported from each terminal with the minimum receivable field strength stored in the database 703, and direct communication is performed. It is determined whether it is possible (step 1006).
- the determination criteria in this case are the same as when the measured electric field strength is reported from the communication terminal 101, the communication terminal 102, and the communication terminal 103 to the control device 200 when the above-described wireless LAN is selected. Note that the control device 200 immediately determines that direct communication is not possible when at least one of the communication terminals reports that “the measurement could not be performed”.
- Example 4 A case where Mesh is selected as the direct communication wireless system will be described.
- the specification defines that each terminal periodically transmits a beacon.
- Each terminal can receive a beacon of another terminal in a time when it does not transmit a beacon. Therefore, each of the communication terminal 101, the communication terminal 102, and the communication terminal 103 can measure the received electric field strength.
- the communication terminal 101, the communication terminal 102, and the communication terminal 103 report the measured electric field strength to the control device 200 as a confirmation result after the specified measurement time has elapsed. If the communication terminal 101, the communication terminal 102, and the communication terminal 103 cannot measure the electric field intensity because the other party is not found within the specified measurement time, the confirmation result is obtained after the specified measurement time has elapsed. As a result, the control unit 200 is notified that “the measurement could not be performed”.
- the control device 200 compares the field strength reported from each terminal with the minimum receivable field strength stored in the database to determine whether direct communication is possible. (Step 1006).
- the determination criteria in this case are the same as when the measured electric field strength is reported from the communication terminal 101, the communication terminal 102, and the communication terminal 103 to the control device 200 when the above-described wireless LAN is selected. Note that the control device 200 immediately determines that direct communication is not possible when at least one of the communication terminals reports that “the measurement could not be performed”.
- the control device 200 requests the terminal determined to be capable of direct communication to switch to direct communication. The procedure is described below.
- FIG. 7 shows an example of the system configuration when switching to direct communication.
- the communication terminal 101 and the communication terminal 102 are directly communicating, and the communication terminal 104, the communication terminal 103, and the communication terminal 105 are directly communicating.
- the communication terminal 101 and the communication terminal 104 perform communication with the base station 201 at the same time.
- the communication terminal 101 and the communication terminal 102 exist in the vicinity, and the communication terminal 103, the communication terminal 104, and the communication terminal 105 exist in the vicinity.
- the communication terminals (communication terminal 101 and communication terminal 104) that perform communication with the base station 201 are referred to as “parent devices”.
- a communication terminal that performs direct communication without performing communication with the base station 201 is referred to as a “slave”.
- the sequence diagram of FIG. 8 shows processing for switching the communication terminal 101 and the communication terminal 102 to direct communication. Further, the sequence diagram of FIG. 9 shows processing for switching the communication terminal 103, the communication terminal 104, and the communication terminal 105 to direct communication.
- the difference between FIG. 8 and FIG. 9 is the number of terminals to which the control device 200 directly transmits a communication switching request, so the following description will be made based on FIG.
- the control device 200 determines the parent device (step 910).
- the base unit is a communication terminal that performs direct communication and also performs communication with the base station 201 at the same time.
- the control device 200 preferentially selects a dedicated terminal determined in advance as a parent device. For example, it is a terminal that operates as a relay terminal of a nearby terminal when a line is congested such as in a disaster, and is a dedicated terminal prepared by a business operator or the like. Further, for example, the control device 200 selects the parent device based on the remaining battery level of the communication terminal. For example, the control apparatus 200 selects a terminal having a good connection state with the base station 201 as a parent device.
- control device 200 selects the parent device based on the setting of the communication terminal. For example, the control device 200 selects the parent device based on information set by the user as to whether or not to permit in advance. In this case, in order to urge the user's permission, a method such as applying a monthly discount when the permission is given can be considered. In an emergency, the determination of the control device 200 is given priority.
- control device 200 selects a terminal that supports many direct communication wireless systems as a parent device. Further, for example, the control device 200 preferentially selects a terminal in the active mode as a parent device. That is, the terminal in the sleep mode is not selected as the parent device.
- control device 200 can know the capability of each communication terminal, and holds the result in the database 703 (see FIG. 4).
- FIG. 10 shows an example of the capability of each terminal held in the database 703.
- Management number is a number assigned for the purpose of management of the database 703.
- Terminal ID is a number for identifying a communication terminal. This number is unique to the terminal, and corresponds to, for example, a Mac address (MAC Address). In the figure, 4-digit numbers are shown in simplified notation.
- Dedicated terminal indicates whether the terminal is a dedicated terminal.
- “User setting” is an item indicating whether or not to become a parent device set by the user.
- the “terminal mode” indicates whether the connection state between the communication terminal and the base station 201 is active or sleep mode.
- “Direct communication wireless system” indicates a direct communication wireless system supported by the communication terminal.
- the numerical value in parentheses is a numerical value indicating the priority for determining the parent device, and becomes a larger numerical value as the number of corresponding wireless systems increases.
- Battery level indicates the battery level of the terminal.
- the numerical value in parentheses is a numerical value indicating the priority for determining the parent device, and becomes a larger numerical value as the remaining battery level increases.
- Connection state with base station indicates communication quality (reception electric field strength) with the base station 201.
- the numerical value in parentheses is a numerical value indicating the priority for determining the parent device, and becomes a larger numerical value as the communication quality is better.
- step ST1 the control device 200 starts processing, and then proceeds to processing in step ST2.
- step ST2 the control device 200 confirms whether a dedicated terminal is available.
- the control device 200 refers to the database 703 and checks the items of the dedicated terminal, user setting, and terminal mode, and determines whether or not it is available. When the dedicated terminal is “Yes”, the user setting is “OK”, and the terminal mode is “active”, it is determined that the terminal can be used. If it is determined in step ST2 that there is a usable terminal, the control device 200 moves to the process in step ST3.
- control device 200 sums up the numerical values (priority) obtained by scoring the direct communication wireless system, the remaining battery level, and the connection state with the base station for the predetermined number of corresponding terminals. Terminal is determined as the parent device. Then, the control apparatus 200 complete
- step ST5 the control device 200 confirms whether or not it is an emergency. In the case of an emergency, the control device 200 moves to the process of step ST6 for all terminals regardless of the items of the dedicated terminal, user setting, and terminal mode in the database 703.
- step ST6 the control device 200 sums up the numerical values (priorities) obtained by scoring the direct communication wireless system, the remaining battery level, and the connection state with the base station for all terminals, and the numerical value (priority) is the highest. Determine the terminal as the parent device. Then, the control apparatus 200 complete
- step ST8 the control apparatus 200 moves to the process of step ST8.
- step ST8 the control device 200 confirms the user setting.
- the control device 200 moves to the process of step ST9.
- step ST9 the control device 200 adds up the numerical values (priority) obtained by scoring the direct communication wireless system, the remaining battery level, and the connection state with the base station for the predetermined number of corresponding terminals, and the most numerical value (priority). Terminal is determined as the parent device. Thereafter, the control device 200 ends the process in step ST10.
- step ST8 When there is no terminal whose user setting is “OK” in step ST8, the control device 200 immediately proceeds to step ST11, and ends the process without selecting a parent device. If the parent device cannot be selected in this way, each terminal determines that it communicates with the base station 201.
- the control device 200 transmits a direct communication switching request to the terminal that switches to direct communication (step 911).
- the switching request includes the ID of the connection partner. This ID is, for example, MAC Address, IP Address, IMEI, IMSI.
- this switching request includes the determined master unit, direct communication radio system, start time, ID of each terminal (MAC address, IMEI), parameters specific to the direct communication radio system, and the like.
- Parameters specific to the direct communication wireless system include, for example, frequency used, role designation in the wireless LAN (whether it is Access point or Station or Wi-Fi Direct), an identifier (SSID) in the wireless LAN, and a role in Bluetooth (BT) Designation (terminal that issues Inquiry Command or terminal that responds to standby).
- the start time indicates the switching timing to direct communication.
- the terminal that has received the switching request transmits a reception confirmation to the control device 200.
- Each terminal starts direct communication based on information included in the switching request (step 912). The details of the connection method using direct communication are common for each wireless system to be used, and will not be described.
- the control device 200 transmits a confirmation request as to whether or not direct communication is possible to the terminal side, and the confirmation sent from the communication terminal side in response thereto.
- a request for switching to direct communication is transmitted to the communication terminal (see steps 904 to 906 in FIG. 5 and steps 1004 to 1006 in FIG. 6). Therefore, for example, it is possible to avoid a situation in which communication cannot actually be performed when switching, and it is possible to satisfactorily switch to direct communication.
- the control apparatus 200 transmits a confirmation request as to whether or not direct communication is possible to each terminal. (See Step 902 in FIG. 5 and Step 1002 in FIG. 6).
- a confirmation request as to whether or not direct communication is possible to each terminal.
- the control device 200 confirms whether or not direct communication is possible for each terminal when a direct communication wireless method common to each terminal that is a target of direct communication is selected.
- the request is transmitted (see step 903 in FIG. 5 and step 1003 in FIG. 6). Therefore, for example, it is possible to reduce that the confirmation request is sent unnecessarily, and the control device 200 can improve the processing efficiency.
- the confirmation request transmitted from the control device 200 to each terminal confirms whether direct communication is possible, including at least information on the direct communication wireless method and identification information of the partner terminal.
- the information to do is inserted. Therefore, for example, each terminal can efficiently perform processing for confirming whether direct communication is possible, for example, measurement of received electric field strength.
- the control device 200 selects a parent device that is simultaneously connected to the base station 201 from each terminal that is a target of direct communication. Therefore, for example, even if each terminal that is a target of direct communication is in a direct communication environment, network communication can be performed through the parent device as necessary.
- the communication terminal has been described assuming a mobile phone, but is not limited to a mobile phone, and may be a portable information processing device such as a PDA, a game machine, or a small PC.
- this technique can also take the following structures.
- a connection request receiving unit that receives a request for connection with the second communication terminal from the first communication terminal;
- a confirmation request transmitter for transmitting a confirmation request as to whether direct communication is possible to the first communication terminal and the second communication terminal;
- a confirmation result receiving unit for receiving confirmation results from the first communication terminal and / or the second communication terminal;
- a determination unit that determines whether direct communication between the first communication terminal and the second communication terminal is possible based on the confirmation result;
- a control apparatus comprising: a switching request transmission unit that transmits a request for switching to direct communication to the first communication terminal and the second communication terminal when determining that direct communication is possible.
- the confirmation request transmitter When it is confirmed that the first communication terminal and the second communication terminal are in the vicinity, a confirmation request as to whether direct communication is possible is transmitted to the first communication terminal and the second communication terminal.
- the control device according to (1) above.
- the vicinity confirmation unit The first communication depends on whether the first communication terminal and the second communication terminal are connected to the same base station, or whether they are connected to either the same base station or an adjacent base station. The control device according to (2), wherein whether the terminal and the second communication terminal are in the vicinity is confirmed.
- (4) further comprising a method selection unit that selects a direct communication wireless method common to the first communication terminal and the second communication terminal from information in the database;
- the confirmation request transmitter Request for confirming whether or not direct communication is possible with the first communication terminal and the second communication terminal when selection of a direct communication radio system common to the first communication terminal and the second communication terminal is performed.
- the control device according to any one of (1) to (3).
- the control device according to (4) in which is inserted.
- the confirmation request transmitted by the confirmation request transmitter includes timing information indicating communication timing for confirming whether the first communication terminal and the second communication terminal can perform the direct communication.
- the control apparatus according to (5).
- the control device according to any one of (1) to (7), wherein the switching request transmitted by the switching request transmission unit includes at least information of a direct communication wireless method and identification information of a counterpart terminal.
- (11) When the determination unit determines that direct communication between the first communication terminal and the second communication terminal is possible, a communication with a base station from the first communication terminal and the second communication terminal is performed.
- a confirmation request receiving unit that receives a confirmation request as to whether direct communication between the own terminal and another communication terminal is possible from the control device; When the confirmation request is received, a confirmation unit that confirms whether direct communication between the own terminal and the other communication terminal is possible, A confirmation result transmitting unit for transmitting the confirmation result to the control device;
- a switching request receiving unit for receiving a switching request for switching from the control device to direct communication of the own terminal and the other communication terminal;
- a communication terminal comprising: a communication control unit that switches its own terminal to direct communication with the other communication terminal when the switching request is received.
- the communication terminal according to (12) including information on the measured received electric field strength or information indicating that the received electric field strength could not be measured.
- the confirmation request received by the confirmation request receiving unit includes information for confirming whether or not the direct communication is possible, including at least information on a direct communication wireless method and identification information on the other communication terminal.
- the confirmation request received by the confirmation request receiving unit includes timing information indicating communication timing for confirming whether direct communication with the other communication terminal is possible or not (14) The communication terminal described in 1.
- the communication terminal according to (14) or (15), wherein the confirmation request received by the confirmation request receiving unit includes a parameter specific to the direct communication wireless system.
- the switching request received by the switching request receiving unit includes at least information on a direct communication wireless system and identification information on the other communication terminal. (12) to (16) Communication terminal. (18) The communication terminal according to (17), wherein the switching request received by the switching request reception unit includes a parameter specific to the direct communication wireless system. (19) The switching request received by the switching request receiving unit includes information on a master unit that simultaneously connects the own terminal and the base station determined from the other communication terminals. The communication terminal according to (18). (20) The communication terminal according to any one of (12) to (19), further including a connection request transmission unit that transmits a request for connection with the other communication terminal to the control device.
Abstract
Description
第1の通信端末から、第2の通信端末との接続の要求を受信する接続要求受信部と、
上記第1の通信端末および上記第2の通信端末に、直接通信が可能かどうかの確認要求を送信する確認要求送信部と、
上記第1の通信端末および/または上記第2の通信端末からの確認結果を受信する確認結果受信部と、
上記確認結果に基づいて、上記第1の端末および上記第2の端末の直接通信が可能かどうかを判断する判断部と、
直接通信が可能と判断するとき、上記第1の通信端末および上記第2の通信端末に直接通信への切り替え要求を送信する切り替え要求送信部とを備える
制御装置にある。
制御装置から自端末および他の通信端末の直接通信が可能かどうかの確認要求を受信する確認要求受信部と、
上記確認要求が受信されるとき、自端末および上記他の通信端末の直接通信が可能かどうかの確認を行う確認部と、
上記確認の結果を上記制御装置に送信する確認結果送信部と、
上記制御装置から自端末および上記他の通信端末の直接通信に切り替える切り替え要求を受信する切り替え要求受信部と、
上記切り替え要求が受信されるとき、自端末を上記他の通信端末との直接通信に切り替える通信制御部とを備える
通信端末にある。
1.実施の形態
2.変形例
[通信システムの構成例]
図1は、実施の形態としての通信システム10の構成例を示している。この通信システム10は、通信端末101~105と、基地局201と、コアネットワーク301と、ネットワークサービス401を有している。通信端末101~105は、基地局201と、無線接続している。以下、「通信端末」は、適宜、「端末」と呼ぶ。
端末の持つ直接通信無線方式を制御装置200が把握する方法について説明する。図4のシーケンス図は、通信端末100の持つ直接通信無線方式を制御装置200が把握する場合における処理を示している。なお、図1の通信システム10における通信端末101~105には、同様の処理が適用される。
端末間の直接通信が可能かどうかを制御装置200が判断する方法について説明する。最初に2端末での判断方法について述べる。図5のシーケンス図は、制御装置200が端末同士の直接通信が可能かどうかを判断する処理を示している。ここでは、2端末が通信端末101と通信端末102である場合を示している。
(例1)無線LANでAP,STAの役割が指定された場合、
(例2)無線LANでWi-Fi Directが指定された場合、
(例3)BTが選択された場合
(例4)Meshが選択された場合
直接通信無線方式として無線LANが選択され、AP、STAの役割が指定された場合について記載する。例えば、通信端末101がAP(Access Point)であり、通信端末102がSTA(Station)であるとする。
直接通信無線方式として無線LANが選択され、Wi-Fi Directが指定された場合について記載する。Wi-Fi Directでは、通信端末101と通信端末102は同等の役割を持っている。仕様では、それぞれがプローブリクエスト(Probe Request)を送信し、このプローブリクエストを受けた端末がプローブレスポンス(Probe Response)を返答することが定められている。そのため、通信端末101、通信端末102の両方において、受信電界強度を測定することが可能である。
直接通信無線方式としてBTが選択された場合について説明する。BTでは、一方の端末がInquiry Commandを送信し、これを受信した端末が返答を返すことが仕様で定められている。通信端末101、通信端末102は、Inquiry Commandおよびその返答を受信することで、それぞれ受信電界強度を測定できる。
直接通信無線方式としてMeshが選択された場合について説明する。Meshでは、各端末がビーコン(Beacon)を周期的に送信することが仕様で定められている。各端末は自身がビーコンを送信していない時間で他の端末のビーコンを受信することが可能である。そのため、通信端末101、通信端末102はそれぞれ受信電界強度を測定できる。
(例1)無線LANでAP,STAの役割が指定された場合、
(例2)無線LANでWi-Fi Directが指定された場合、
(例3)BTが選択された場合
(例4)Meshが選択された場合
直接通信無線方式として無線LANが選択され、AP、STAの役割が指定された場合について記載する。例えば、通信端末101がAP(Access Point)であり、通信端末102、通信端末103がSTA(Station)であるとする。
直接通信無線方式として無線LANが選択され、Wi-Fi Directが指定された場合について記載する。Wi-Fi Directでは、通信端末101、通信端末102、通信端末103は同等の役割を持っている。仕様では、それぞれがプローブリクエスト(Probe Request)を送信し、このプローブリクエストを受けた端末がプローブレスポンス(Probe Response)を返答することが定められている。そのため、通信端末101、通信端末102、通信端末103の全てにおいて、受信電界強度を測定することが可能である。
直接通信無線方式としてBTが選択された場合について説明する。BTでは、一方の端末がInquiry Commandを送信し、これを受信した端末が返答を返すことが仕様で定められている。通信端末101がInquiry Commandを送信し通信端末102、通信端末103がその返答を行うことで、通信端末101は、通信端末102、通信端末103との受信電界強度を測定でき、通信端末102、通信端末103は、通信端末101との受信電界強度を測定できる。
直接通信無線方式としてMeshが選択された場合について説明する。Meshでは、各端末がビーコン(Beacon)を周期的に送信することが仕様で定められている。各端末は自身がビーコンを送信していない時間で他の端末のビーコンを受信することが可能である。そのため、通信端末101、通信端末102、通信端末103はそれぞれ受信電界強度を測定できる。
端末間を直接通信に切り替える方法について説明する。制御装置200は、直接通信が可能と判断した端末に対して、直接通信に切り替えるように要求する。以下に、その手順を記載する。
なお、添付図面を参照しながら本技術の実施形態について詳細に説明したが、本技術はかかる例に限定されない。本技術の属する技術の分野における通常の知識を有する者であれば、特許請求の範囲に記載された技術的思想の範疇内において、各種の変更例または修正例に想到し得ることは明らかであり、これらについても、当然に本技術の範囲に属するものと了解される。例えば、通信端末は、携帯電話機を想定して説明したが、携帯電話機に限るものではなく、PDAやゲーム機、小型PCなど、携帯型の情報処理装置であり得る。
(1)第1の通信端末から、第2の通信端末との接続の要求を受信する接続要求受信部と、
上記第1の通信端末および上記第2の通信端末に、直接通信が可能かどうかの確認要求を送信する確認要求送信部と、
上記第1の通信端末および/または上記第2の通信端末からの確認結果を受信する確認結果受信部と、
上記確認結果に基づいて、上記第1の通信端末および上記第2の通信端末の直接通信が可能かどうかを判断する判断部と、
直接通信が可能と判断するとき、上記第1の通信端末および上記第2の通信端末に直接通信への切り替え要求を送信する切り替え要求送信部とを備える
制御装置。
(2)上記第1の通信端末および上記第2の通信端末が近傍にいるかどうかを確認する近傍確認部をさらに備え、
上記確認要求送信部は、
上記第1の通信端末および上記第2の通信端末が近傍にいることが確認されたとき、上記第1の通信端末および上記第2の通信端末に直接通信が可能かどうかの確認要求を送信する
前記(1)に記載の制御装置。
(3)上記近傍確認部は、
上記第1の通信端末および上記第2の通信端末が同一基地局に接続しているかどうかにより、あるいは同一の基地局および近接した基地局のいずれかに接続しているかどうかにより上記第1の通信端末および上記第2の通信端末が近傍にいるかどうかを確認する
前記(2)に記載の制御装置。
(4)データベースの情報から上記第1の通信端末および上記第2の通信端末に共通する直接通信無線方式を選択する方式選択部をさらに備え、
上記確認要求送信部は、
上記第1の通信端末および上記第2の通信端末に共通する直接通信無線方式の選択が行われるとき、上記第1の通信端末および上記第2の通信端末に直接通信が可能かどうかの確認要求を送信する
前記(1)から(3)のいずれかに記載の制御装置。
(5)上記確認要求送信部が送信する上記確認要求には、少なくとも上記選択された直接通信無線方式の情報および相手端末の識別情報を含む、上記直接通信が可能かどうかを確認するための情報が挿入される
前記(4)に記載の制御装置。
(6)上記確認要求送信部が送信する上記確認要求には、上記第1の通信端末および上記第2の通信端末における上記直接通信が可能かどうかの確認のための通信タイミングを示すタイミング情報が含まれる
前記(5)に記載の制御装置。
(7)上記確認要求送信部が送信する上記確認要求には、上記選択された直接通信無線方式に固有のパラメータが含まれる
前記(5)または(6)に記載の制御装置。
(8)上記切り替え要求送信部が送信する切り替え要求には、少なくとも直接通信無線方式の情報および相手端末の識別情報が含まれる
前記(1)から(7)のいずれかに記載の制御装置。
(9)上記切り替え要求送信部が送信する切り替え要求には、上記直接通信への切り替えタイミングを示すタイミング情報が含まれる
前記(8)に記載の制御装置。
(10)データベースの情報から上記第1の通信端末および上記第2の通信端末に共通する直接通信無線方式を選択する方式選択部をさらに備え、
上記確認要求送信部は、
上記第1の通信端末および上記第2の通信端末に共通する直接通信無線方式の選択が行われるとき、上記第1の通信端末および上記第2の通信端末に直接通信が可能かどうかの確認要求を送信し、
上記切り替え要求送信部が送信する切り替え要求には、上記選択された直接通信無線方式に固有のパラメータが含まれる
前記(8)または(9)に記載の制御装置。
(11)上記判断部が上記第1の通信端末および上記第2の通信端末の直接通信が可能と判断するとき、上記第1の通信端末および上記第2の通信端末の中から基地局との接続も同時に行う親機を決定する親機決定部をさらに備え、
上記切り替え要求送信部が送信する切り替え要求には、上記決定された親機の情報が含まれる
前記(8)から(10)のいずれかに記載の制御装置。
(12)制御装置から自端末および他の通信端末の直接通信が可能かどうかの確認要求を受信する確認要求受信部と、
上記確認要求が受信されるとき、自端末および上記他の通信端末の直接通信が可能かどうかの確認を行う確認部と、
上記確認の結果を上記制御装置に送信する確認結果送信部と、
上記制御装置から自端末および上記他の通信端末の直接通信に切り替える切り替え要求を受信する切り替え要求受信部と、
上記切り替え要求が受信されるとき、自端末を上記他の通信端末との直接通信に切り替える通信制御部とを備える
通信端末。
(13)上記確認結果送信部が送信する確認結果に、
測定された受信電界強度の情報、または受信電界強度を測定できなかった旨の情報を含める
前記(12)に記載の通信端末。
(14)上記確認要求受信部が受信する上記確認要求には、少なくとも直接通信無線方式の情報および上記他の通信端末の識別情報を含む、上記直接通信が可能かどうかを確認するための情報が挿入されている
前記(12)または(13)に記載の通信端末。
(15)上記確認要求受信部が受信する上記確認要求には、上記他の通信端末との間の直接通信が可能かどうかの確認のための通信タイミングを示すタイミング情報が含まれる
前記(14)に記載の通信端末。
(16)上記確認要求受信部が受信する上記確認要求には、上記直接通信無線方式に固有のパラメータが含まれる
前記(14)または(15)に記載の通信端末。
(17)上記切り替え要求受信部が受信する切り替え要求には、少なくとも、直接通信無線方式の情報と上記他の通信端末の識別情報が含まれる
前記(12)から(16)のいずれかに記載の通信端末。
(18)上記切り替え要求受信部が受信する切り替え要求には、上記直接通信無線方式に固有のパラメータが含まれる
前記(17)に記載の通信端末。
(19)上記切り替え要求受信部が受信する切り替え要求には、自端末と上記他の通信端末の中から決定された基地局との接続も同時に行う親機の情報が含まれる
前記(17)または(18)に記載の通信端末。
(20)上記制御装置に上記他の通信端末との接続の要求を送信する接続要求送信部をさらに備える
前記(12)から(19)のいずれかに記載の通信端末。
100,101~105・・・通信端末
200・・・制御装置
201・・・基地局
301・・・コアネットワーク
401・・・ネットワークサービス
601~603・・・通信部
604・・・制御部
701・・・通信部
702・・・制御部
703・・・データベース
Claims (20)
- 第1の通信端末から、第2の通信端末との接続の要求を受信する接続要求受信部と、
上記第1の通信端末および上記第2の通信端末に、直接通信が可能かどうかの確認要求を送信する確認要求送信部と、
上記第1の通信端末および/または上記第2の通信端末からの確認結果を受信する確認結果受信部と、
上記確認結果に基づいて、上記第1の通信端末および上記第2の通信端末の直接通信が可能かどうかを判断する判断部と、
直接通信が可能と判断するとき、上記第1の通信端末および上記第2の通信端末に直接通信への切り替え要求を送信する切り替え要求送信部とを備える
制御装置。 - 上記第1の通信端末および上記第2の通信端末が近傍にいるかどうかを確認する近傍確認部をさらに備え、
上記確認要求送信部は、
上記第1の通信端末および上記第2の通信端末が近傍にいることが確認されたとき、上記第1の通信端末および上記第2の通信端末に直接通信が可能かどうかの確認要求を送信する
請求項1に記載の制御装置。 - 上記近傍確認部は、
上記第1の通信端末および上記第2の通信端末が同一基地局に接続しているかどうかにより、あるいは同一の基地局および近接した基地局のいずれかに接続しているかどうかにより上記第1の通信端末および上記第2の通信端末が近傍にいるかどうかを確認する
請求項2に記載の制御装置。 - データベースの情報から上記第1の通信端末および上記第2の通信端末に共通する直接通信無線方式を選択する方式選択部をさらに備え、
上記確認要求送信部は、
上記第1の通信端末および上記第2の通信端末に共通する直接通信無線方式の選択が行われるとき、上記第1の通信端末および上記第2の通信端末に直接通信が可能かどうかの確認要求を送信する
請求項1に記載の制御装置。 - 上記確認要求送信部が送信する上記確認要求には、少なくとも直接通信無線方式の情報および相手端末の識別情報を含む、上記直接通信が可能かどうかを確認するための情報が挿入される
請求項4に記載の制御装置。 - 上記確認要求送信部が送信する上記確認要求には、上記第1の通信端末および上記第2の通信端末における上記直接通信が可能かどうかの確認のための通信タイミングを示すタイミング情報が含まれる
請求項5に記載の制御装置。 - 上記確認要求送信部が送信する上記確認要求には、上記選択された直接通信無線方式に固有のパラメータが含まれる
請求項5に記載の制御装置。 - 上記切り替え要求送信部が送信する切り替え要求には、少なくとも直接通信無線方式の情報および相手端末の識別情報が含まれる
請求項1に記載の制御装置。 - 上記切り替え要求送信部が送信する切り替え要求には、上記直接通信への切り替えタイミングを示すタイミング情報が含まれる
請求項8に記載の制御装置。 - データベースの情報から上記第1の通信端末および上記第2の通信端末に共通する直接通信無線方式を選択する方式選択部をさらに備え、
上記確認要求送信部は、
上記第1の通信端末および上記第2の通信端末に共通する直接通信無線方式の選択が行われるとき、上記第1の通信端末および上記第2の通信端末に直接通信が可能かどうかの確認要求を送信し、
上記切り替え要求送信部が送信する切り替え要求には、上記選択された直接通信無線方式に固有のパラメータが含まれる
請求項8に記載の制御装置。 - 上記判断部が上記第1の通信端末および上記第2の通信端末の直接通信が可能と判断するとき、上記第1の通信端末および上記第2の通信端末の中から基地局との接続も同時に行う親機を決定する親機決定部をさらに備え、
上記切り替え要求送信部が送信する切り替え要求には、上記決定された親機の情報が含まれる
請求項8に記載の制御装置。 - 制御装置から自端末および他の通信端末の直接通信が可能かどうかの確認要求を受信する確認要求受信部と、
上記確認要求が受信されるとき、自端末および上記他の通信端末の直接通信が可能かどうかの確認を行う確認部と、
上記確認の結果を上記制御装置に送信する確認結果送信部と、
上記制御装置から自端末および上記他の通信端末の直接通信に切り替える切り替え要求を受信する切り替え要求受信部と、
上記切り替え要求が受信されるとき、自端末を上記他の通信端末との直接通信に切り替える通信制御部とを備える
通信端末。 - 上記確認結果送信部が送信する確認結果に、
測定された受信電界強度の情報、または受信電界強度を測定できなかった旨の情報を含める
請求項12に記載の通信端末。 - 上記確認要求受信部が受信する上記確認要求には、少なくとも直接通信無線方式の情報および上記他の通信端末の識別情報を含む、上記直接通信が可能かどうかを確認するための情報が挿入されている
請求項12に記載の通信端末。 - 上記確認要求受信部が受信する上記確認要求には、上記他の通信端末との間の直接通信が可能かどうかの確認のための通信タイミングを示すタイミング情報が含まれる
請求項14に記載の通信端末。 - 上記確認要求受信部が受信する上記確認要求には、上記直接通信無線方式に固有のパラメータが含まれる
請求項14に記載の通信端末。 - 上記切り替え要求受信部が受信する切り替え要求には、少なくとも、直接通信無線方式の情報と上記他の通信端末の識別情報が含まれる
請求項12に記載の通信端末。 - 上記切り替え要求受信部が受信する切り替え要求には、上記直接通信無線方式に固有のパラメータが含まれる
請求項17に記載の通信端末。 - 上記切り替え要求受信部が受信する切り替え要求には、自端末と上記他の通信端末の中から決定された基地局との接続も同時に行う親機の情報が含まれる
請求項17に記載の通信端末。 - 上記制御装置に上記他の通信端末との接続の要求を送信する接続要求送信部をさらに備える
請求項12に記載の通信端末。
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JP2016153955A (ja) * | 2015-02-20 | 2016-08-25 | 富士ゼロックス株式会社 | 情報処理装置、プログラム及び方法 |
WO2023223819A1 (ja) * | 2022-05-16 | 2023-11-23 | 株式会社オートネットワーク技術研究所 | 情報処理方法、通信システムおよび情報処理プログラム |
WO2023223825A1 (ja) * | 2022-05-16 | 2023-11-23 | 株式会社オートネットワーク技術研究所 | 車載装置、情報処理方法および情報処理プログラム |
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JPWO2015008714A1 (ja) | 2017-03-02 |
EP3024298A1 (en) | 2016-05-25 |
AU2014291277A1 (en) | 2015-12-03 |
US10820179B2 (en) | 2020-10-27 |
EP3024298B1 (en) | 2020-09-02 |
US20160198503A1 (en) | 2016-07-07 |
AU2014291277B2 (en) | 2017-04-13 |
JP6471690B2 (ja) | 2019-02-20 |
US10375550B2 (en) | 2019-08-06 |
EP3024298A4 (en) | 2017-02-22 |
US20190320308A1 (en) | 2019-10-17 |
CN105453694A (zh) | 2016-03-30 |
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