WO2008047870A1 - Dispositif de communication de diffusion, dispositif de terminal de réseau, dispositif de relais de distribution, procédé de communication de diffusion, programme de communication de diffusion et support d'enregistrement - Google Patents

Dispositif de communication de diffusion, dispositif de terminal de réseau, dispositif de relais de distribution, procédé de communication de diffusion, programme de communication de diffusion et support d'enregistrement Download PDF

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Publication number
WO2008047870A1
WO2008047870A1 PCT/JP2007/070355 JP2007070355W WO2008047870A1 WO 2008047870 A1 WO2008047870 A1 WO 2008047870A1 JP 2007070355 W JP2007070355 W JP 2007070355W WO 2008047870 A1 WO2008047870 A1 WO 2008047870A1
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WO
WIPO (PCT)
Prior art keywords
broadcast
communication
identification information
information
relay
Prior art date
Application number
PCT/JP2007/070355
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English (en)
Japanese (ja)
Inventor
Hiroaki Shibasaki
Original Assignee
Pioneer Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pioneer Corporation filed Critical Pioneer Corporation
Publication of WO2008047870A1 publication Critical patent/WO2008047870A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/61—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for local area broadcast, e.g. instore broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/57—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for mobile receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
    • H04H20/53—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers
    • H04H20/59—Arrangements specially adapted for specific applications, e.g. for traffic information or for mobile receivers for emergency or urgency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/15—Arrangements for conditional access to broadcast information or to broadcast-related services on receiving information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04H—BROADCAST COMMUNICATION
    • H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
    • H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
    • H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
    • H04H60/19—Arrangements for conditional access to broadcast information or to broadcast-related services on transmission of information

Definitions

  • Broadcast communication device communication terminal device, distribution relay device, broadcast communication method, broadcast communication program, and recording medium
  • the present invention relates to a broadcast communication device that performs broadcast communication to a communication terminal device in a communication area of a specific base station, and is located in the communication area of a predetermined base station and is distributed from the broadcast communication device.
  • the present invention relates to a communication terminal device that receives the broadcast information, a distribution relay device that distributes the broadcast information to a specific communication area, a broadcast communication method, a broadcast communication program, and a recording medium.
  • the use of the present invention is not limited to the above-described broadcast communication device, communication terminal device, distribution relay device, broadcast communication method, broadcast communication program, and recording medium. Background art
  • broadcast communication that distributes the same information to a plurality of communication terminal devices on a network regardless of wired wireless has been performed.
  • the base station control device includes means for identifying the type of the wireless channel that transfers data for broadcast communication from the wireless base station to the communication terminal device that is the transmission destination.
  • the base station control device includes means for assigning a broadcast service terminal identifier to the broadcast data when the radio channel is identified as a radio common channel shared by a plurality of communication terminal devices. .
  • Patent Document 1 Japanese Patent Laid-Open No. 2005-294879
  • the base station control device must hold in advance information identifying a communication terminal device that transmits data for broadcast communication. Therefore, the problem that broadcasting to unspecified communication terminal devices cannot be performed is an example.
  • the communication terminal device is provided as a mobile radio terminal as described above, and the reception position changes according to the movement of the user.
  • changes in the reception area cannot be reflected in the distribution conditions when data for broadcast communication is transmitted. Therefore, you want to provide information only to areas where disasters have occurred, or perform broadcast communication using different reception areas such as collecting information from users who are in a specific city! The problem of being unable to do so is an example.
  • the broadcast communication device is a broadcast communication device that distributes the same information (hereinafter referred to as “broadcast information”) to each communication terminal device in a plurality of communication areas.
  • Selection means for accepting selection of a specific communication area from the plurality of communication areas, acquisition means for acquiring identification information representing the specific communication area selected by the selection means, and dedicated for performing the distribution
  • the identification information is incorporated as a criterion for determining whether or not to receive the broadcast information at the address of the broadcast address, and only the communication terminal device within the specific communication area can receive the broadcast information.
  • An address generation means for generating the address, and a distribution means for distributing the broadcast information using the address generated by the address generation means.
  • the communication terminal device is a communication terminal device located in any of the communication areas, and is set in the address of the broadcast information distributed from the broadcast communication device.
  • Acquisition means for acquiring identification information of a specific communication area that is included, inquiry means for inquiring identification information of a communication area currently located, identification information of a specific communication area acquired by the acquisition means,
  • a determination unit that makes a match determination with the identification information of the communication area inquired by the inquiry unit, and
  • a reception control unit that receives the broadcast information when the identification information matches by the determination unit.
  • the distribution relay device is the same as that distributed from the broadcast communication device.
  • a distribution relay device that distributes broadcast information to a communication terminal device located within a communicable range of the own device, the relay representing a specific distribution relay device from the address of the broadcast information distributed from the broadcast communication device
  • An acquisition unit that acquires identification information; a determination unit that performs a match determination between the identification information acquired by the acquisition unit and relay identification information that represents the own device; and the relay identification information when the determination unit matches the relay identification information Distribution control means for distributing broadcast information.
  • the broadcast communication method according to the invention of claim 12 is the broadcast communication method for distributing the same information (hereinafter referred to as "broadcast information") to each communication terminal device in a plurality of communication areas.
  • the identification information is incorporated as a criterion for determining whether or not to receive the broadcast information in a dedicated address to perform the broadcast, and only the communication terminal device in the specific communication area can receive the broadcast information.
  • the broadcast communication method according to the invention of claim 14 is a broadcast communication method in reception of a communication terminal device located in any of the communication areas, and is broadcast from the broadcast communication device.
  • An acquisition process for acquiring identification information of a specific communication area incorporated in the address of the information, an inquiry process for inquiring about identification information of a communication area currently located, and an identification of the specific communication area acquired by the acquisition process A determination step of performing a matching determination between the information and the identification information of the communication area inquired by the inquiry step, and a receiving step of receiving the broadcast information when the identification information matches by the determination step; It is characterized by including.
  • the broadcast communication method according to the invention of claim 15 is a distribution relay device that distributes broadcast information distributed from a broadcast communication device to a communication terminal device located in a communicable range of the own device.
  • a broadcast communication method an acquisition step of acquiring relay identification information representing a specific distribution relay device from an address of the broadcast information distributed from the broadcast communication device, and the relay acquired by the acquisition step Identification information and relay identification that represents the device itself And a distribution step of distributing the broadcast information when the relay identification information matches in the determination step.
  • the broadcast communication program according to the invention of claim 16 causes a computer to execute the broadcast communication method according to any one of claims 12 to 15;
  • a recording medium that is advantageous for the invention of claim 17 is characterized in that the broadcast communication program of claim 16 is recorded in a computer-readable manner.
  • FIG. 1 is a block diagram of an example of a configuration of a broadcast communication device and a communication terminal device according to a first embodiment.
  • FIG. 2 is a flowchart showing an example of processing contents of the broadcast communication apparatus according to the first embodiment.
  • FIG. 3 is a flowchart showing an example of processing contents of the communication terminal apparatus according to the first embodiment.
  • FIG. 4 is an explanatory diagram of an example of a network configuration according to the first embodiment.
  • FIG. 5 is a block diagram showing an example of a hardware configuration of the navigation device.
  • FIG. 6 is a flowchart illustrating an example of processing contents of the navigation device on the broadcast information distribution side according to the first embodiment.
  • FIG. 7 is a flowchart illustrating an example of processing contents of the navigation device on the broadcast information receiving side according to the first embodiment.
  • FIG. 8 is a block diagram of an example of a configuration of a broadcast communication device and a distribution relay device according to the second embodiment.
  • FIG. 9 is a flowchart showing an example of processing contents of the broadcast communication apparatus according to the second embodiment.
  • FIG. 10 is a flowchart showing an example of processing contents of the distribution relay device according to the second embodiment.
  • FIG. 11 is an explanatory diagram of an example of a network configuration according to the second embodiment.
  • FIG. 12 is a flowchart illustrating an example of processing contents of the navigation device on the broadcast information distribution side according to the second embodiment.
  • FIG. 13 is a flowchart illustrating an example of processing contents of the base station according to the second embodiment.
  • FIG. 14 is a flowchart illustrating an example of processing contents of the navigation device on the broadcast information receiving side according to the second embodiment.
  • FIG. 1 is a block diagram showing an example of the configuration of the broadcast communication device and the communication terminal device according to the first embodiment of the present invention.
  • the broadcast communication method according to the first embodiment of the present invention is realized by a broadcast communication device 110 and a communication terminal device 120.
  • the communication terminal device 120 has a communication area formed by any of the base stations and relay stations. Located in.
  • FIG. 1 as an example, a case where communication terminal apparatus 120 is located in communication area 140 of base station 130 will be described.
  • the broadcast communication device 110 includes a selection unit 111, an acquisition unit 112, an address generation unit 113, and a distribution unit 114.
  • the selection unit 111 receives a selection of a specific communication area from a plurality of communication areas from a user.
  • the plurality of communication areas are each communication area configured by a base station or a relay station as described above.
  • the user selects a specific communication area to which broadcast information is to be distributed from among the plurality of communication areas. Then, the selection unit 111 accepts the selection by the user.
  • the selection of a specific communication area accepted by the selection unit 111 may be a selection of one communication area or a plurality of communication areas. Furthermore, the selection of the specific communication area accepted by the selection unit 111 may not be the selection of the communication area itself represented by the base station or the relay station.
  • the selection unit 111 may accept information including a place name and address as a specific communication area, or may accept information including a latitude / longitude and an area radius. In the case of FIG. 1, any information may be used as long as it represents the communication area 140 as a specific communication area.
  • the selection unit 111 can also accept selection of a group constituted by a specific communication terminal device (for example, a group including the communication terminal device 120) from the user. This group information is received by the selection unit 111 together with the selection of a specific communication area.
  • a specific communication terminal device for example, a group including the communication terminal device 120
  • the acquisition unit 112 acquires identification information representing a specific communication area selected by the user from the selection unit 111.
  • Identification information is a unique character string representing a communication area. Specifically, it is a character string representing a base station, a relay station, or the like constituting the communication area. Therefore, if the identification information of each communication area may be identification information that represents a base station, it may be identification information that represents a relay station, and how the communication area is configured. It depends on the power. Note that the identification information is not limited to one.
  • the specific communication area selected by the selection unit 111 is represented by various information (for example, place name, latitude / longitude information, etc.). Corresponding communication areas are extracted. If the identification information represents the communication area 140, for example, the identification information of the base station 130 that uniquely sets the communication area 140 as the communicable range is acquired. If the communication area received by the selection unit 111 is within the communicable range of the specific relay station, the identification information of the specific relay station is acquired.
  • the procedure for acquiring the identification information of the communication area in the acquiring unit 112 is not uniform.
  • the selection unit 111 is selected from the table. Search the communication area and obtain the corresponding identification information.
  • the identification information of the communication area selected by the selection unit 111 may be acquired by connecting to an external network, searching the identification information via this network, and! /, . If the identification information of the selected communication area is not prepared in the table provided in the broadcast communication device 110, the identification information may be searched via an external network. Furthermore, the table may be periodically updated using an external network so that the corresponding identification information can be acquired regardless of the communication area selected.
  • selection unit 111 When selection unit 111 receives selection of a group configured by a specific communication terminal device together with a specific communication area, acquisition unit 112 selects the group selected together with the identification information of the specific communication area. Acquires group identification information.
  • Address generation section 113 generates an address for broadcast communication that distributes broadcast information to communication terminal apparatus 120 in a specific communication area. Specifically, the identification information acquired by the acquisition unit 112 is incorporated into a predetermined broadcast communication address. The address for broadcast communication is specifically composed of a specific broadcast character string representing the broadcast.
  • the identification information incorporated in the address for broadcast communication is used as a criterion for determining whether or not broadcast information is received in communication terminal apparatus 120. Therefore, the broadcast information provided with the address generated by the address generator 113 is not included in a specific communication area. Only the communication terminal device 120 can receive.
  • the address generation unit 113 identifies the communication area.
  • group identification information is incorporated, and an address for broadcast communication is generated so that only a specific group of communication terminal devices can receive the broadcast information.
  • the distribution unit 114 distributes broadcast information using the address generated by the address generation unit 113.
  • the communication terminal device 120 includes an acquisition unit 121, an inquiry unit 122, a determination unit 123, and a reception control unit 124.
  • Acquisition unit 121 acquires identification information of a specific communication area incorporated in the address of the broadcast information distributed from broadcast communication device 110. As described above, the broadcast information is distributed from the broadcast communication device 110 to all the communication terminal devices 120 within the communicable range. First, the acquiring unit 121 determines whether or not the broadcast information is distributed. If the broadcast information is distributed, the acquiring unit 121 acquires information about an address given to the broadcast information and acquires identification information.
  • Whether or not the distributed information is broadcast information is determined by referring to the address given to the broadcast information. As described in! / In the address generation unit 113 of the broadcast communication device 110, an address for broadcast communication is set in advance in the broadcast communication device 110. The broadcast address setting is similarly performed in the communication terminal device 120. Therefore, if the address given to the broadcast information contains a specific character string representing the address for broadcast communication, the broadcast information is uniquely determined and identification information acquisition processing is performed. Do it.
  • the acquisition unit 121 also acquires the group identification information. If the address given to the broadcast information contains only a specific character string representing the address for broadcast communication and does not contain the identification information or group identification information, the distributed broadcast is sent. Information is sent to the receiving side. Indicates that there are no restrictions. Therefore, the process proceeds to the process of receiving broadcast information as it is.
  • the inquiry unit 122 inquires the identification information of the communication area where the communication terminal device 120 is currently located. Specifically, the inquiry of the identification information of the communication area refers to the inquiry of the identification information to the base station or relay station that constitutes the communication area where the device itself is currently located.
  • the communication area identification information is identification information of a base station, a relay station, or the like that constitutes the communication area. Accordingly, in FIG. 1, the communication terminal apparatus 120 makes an inquiry for identification information to the base station 130.
  • the determination unit 123 determines whether the identification information of the specific communication area acquired by the acquisition unit 121 matches the identification information of the communication area inquired by the inquiry unit 122. In addition, when group information is included in the broadcast information and the group information is acquired by the acquisition unit 121, the acquired group identification information and the group information set in the device itself are Matching is also done.
  • the reception control unit 124 receives the broadcast information when the determination unit 123 matches the identification information. Also here, when the determination unit 123 determines that the group identification information matches, the broadcast information is received only when the identification information matches and the group identification information matches.
  • broadcast information is distributed only from the broadcast communication device 110 that has received permission, and the communication terminal device that has also received permission. It is also possible to realize highly confidential broadcast communications that only 120 can be received.
  • the acquisition unit 112 of the broadcast communication apparatus 110 is provided with a table in which character strings corresponding to a plurality of communication areas are set.
  • the acquisition unit 112 refers to the table and acquires a character string corresponding to the specific communication area selected by the selection unit 111 as identification information (confidential identification information).
  • the address generation unit 113 also incorporates identification information (confidential identification information) acquired by referring to the table to generate an address for broadcast communication.
  • the acquisition unit 121 of the communication terminal device 120 also supports each of a plurality of communication areas.
  • a table with character strings is provided. This table is the same as that provided in the acquisition unit 112 of the broadcast communication device 110.
  • the acquisition unit 121 of the communication terminal apparatus 120 refers to the table and acquires original identification information representing a specific communication area. Thereafter, the determining unit 123 determines whether the acquired identification information matches the inquired identification information.
  • FIG. 2 is a flowchart showing an example of processing contents of the broadcast communication apparatus according to the first embodiment.
  • the selection unit 111 determines whether or not the selection of a communication area (for example, the communication area 140) has been accepted (step S201). Here, it waits until the selection is accepted (step S201: No loop), and if accepted (step S201: Yes), whether or not the acquisition unit 112 has acquired the identification information of the communication area 140 selected by the selection unit 111. Are determined (step S202).
  • step S202 If it is determined in step S202 that the identification information of communication area 140 has been acquired (step S202: Yes), the process directly proceeds to step S204. On the other hand, when it is determined that the identification information of the communication area could not be acquired (step S202: No), it is determined whether or not the identification information of the selected communication area 140 is prepared (step S203).
  • step S203 differs depending on how the identification information is acquired.
  • step S203 if it is determined that the identification information is prepared and is not! / (No in step S203), the series of processes is terminated. If it is determined that it is prepared (step S203) : Yes), the process returns to step S202 and waits until identification information acquisition is confirmed.
  • step S202 When the identification information is acquired in step S202 (step S202: Yes), the address generation unit 113 incorporates the identification information into the broadcast character string and generates an address for broadcast communication (step S204). . Finally, the distribution unit 114 distributes the broadcast information using the generated address for broadcast communication (step S205), and the series of processing ends.
  • FIG. 3 is a flowchart illustrating an example of processing contents of the communication terminal apparatus according to the first embodiment.
  • the acquisition unit 121 first determines whether or not broadcast information is distributed from the broadcast communication device 110 (step S301). Here, it waits until the broadcast information is distributed (step S301: No loop). When the broadcast information is distributed (step S301: Yes), whether or not the identification information is incorporated in the address of the broadcast information. Is determined (step S302).
  • step S302 If it is determined in step S302 that the identification information is incorporated (step S3 02: Yes), the acquisition unit 121 acquires the identification information (step S303), and the inquiry unit 122 receives the base station 130.
  • the identification information of the communication area 140 is queried (in the case of FIG. 1) (step S304).
  • the determination unit 123 determines whether the acquired identification information matches the inquired identification information (step S305). If the identification information does not match due to this determination (step S305: No), the broadcast information is not subject to reception, and the series of processing ends. On the other hand, if the identification information matches (step S305: Yes), the broadcast information becomes a reception target, so the reception control unit 124 receives the broadcast information (step S306), and the series of processing ends.
  • step S302 Even if the identification information is not included in the address in step S302 (step S302: No), the broadcast information is to be received, so the process proceeds to step S306 to receive the broadcast information. .
  • a reply can be accepted only from communication terminal apparatus 120 in a specific communication area 140, using the address given to the broadcast information as a reply address. Therefore, it is possible to collect information specifying a communication area.
  • Example 1
  • Example 1 according to Embodiment 1 of the present invention will be described.
  • a navigation device By performing broadcast communication using a navigation device, it is possible to collect information from other vehicles located in the specified communication area.
  • broadcast information that can be received only by a navigation device located within a specific communication area is distributed from a navigation device having the function of the broadcast communication device 110.
  • the broadcast information is distributed directly to all communication terminal devices 120 in the communicable range (without going through the base station or relay station) according to the distribution output of the broadcast communication device 110.
  • Each communication terminal device 120 that has received the distribution receives the broadcast information only when it is located within the designated communication area.
  • communication terminal apparatus 120 that has received the broadcast information transmits reply information corresponding to the content of the broadcast information to broadcast communication apparatus 110 that is the broadcast information distribution source.
  • the broadcast communication device 110 that is the distribution source receives the reply information from the communication terminal device 120 located in a specific communication area. Note that what information is sent as reply information can be set in advance in the broadcast information. Therefore, a navigation device having the function of the broadcast communication device 110 that is the distribution source of broadcast information, for example, obtains traffic information around the destination from now on from a vehicle actually traveling around the destination. The ability S to collect information effectively, such as collecting it, is used.
  • broadcast information is distributed from a vehicle equipped with a navigation device having both functions of the broadcast communication device 110 and the communication terminal device 120, and the navigation device having the same function is provided.
  • the navigation device having the same function is provided.
  • FIG. 4 is an explanatory diagram of an example of a network configuration according to the first embodiment.
  • the network implementing the broadcast communication method according to the first embodiment includes, as an example, a vehicle 400 that delivers broadcast information and a vehicle 410 that accepts broadcast information delivery ( 41 OA, 410B), a base station 420A of communication Yulia A, and a base station 420B of communication Yulia B.
  • each vehicle 410 is a vehicle 410A when it is located in the communication area A, and a vehicle 410B when it is located in the communication area B.
  • FIG. 5 is a block diagram illustrating an example of a hardware configuration of the navigation device.
  • the navigation device 500 is a navigation device having the functions of both the broadcast communication device mounted on the vehicle 400 and the vehicle 410 shown in FIG. 4 and the communication terminal device.
  • a navigation device 500 includes a CPU 501, a ROM 502, a RAM 503, a magnetic disk drive 504, a magnetic disk 505, an optical disk drive 506, an optical disk 507, and an audio interface (interface). 508, microphone 509, speaker 510, input device 511, video I / F 512, display 513, communication I / F (interface) 51 4, GPS unit 515, various sensors 516, And a camera 517.
  • Each component 50;! To 517 is connected by a bus 520.
  • the CPU 501 governs overall control of the navigation device 500.
  • the ROM 502 records programs such as a boot program, a route search program, a route guidance program, a guidance sound generation program, and a broadcast communication program!
  • the RAM 503 is used as a work area for the CPU 501.
  • the magnetic disk drive 504 controls the reading / writing of the data with respect to the magnetic disk 505 according to control of CPU501.
  • the magnetic disk 505 records data written under the control of the magnetic disk drive 504.
  • the magnetic disk 505 for example, HD (node disk) or FD (flexible disk) can be used.
  • the optical disk drive 506 controls reading / writing of data with respect to the optical disk 507 according to the control of the CPU 501.
  • the optical disc 507 is a detachable recording medium from which data is read from the optical disc 507 under the control of the optical disc drive 506.
  • a writable recording medium can be used.
  • the removable recording medium may be an MO, a memory card, or the like.
  • map information used for route search-route guidance.
  • the map information has background data that represents features (features) such as buildings, rivers, and the ground surface, and road shape data that represents the shape of the road. Draw in the dimension.
  • the background data of the map information includes latitude and longitude information of each point on the map, as well as latitude and longitude information of representative points of various features. Therefore, for example, when one point on the map information displayed on the display 513 to be described later is designated by the user, the latitude / longitude information of the point can be extracted from the map information. Also, for example, when the name of a certain feature is inputted, the map information power extraction force S is used to extract the latitude and longitude information of the representative point.
  • the map information is recorded on the magnetic disk 505 and the optical disk 507.
  • the map information may be provided outside the navigation device 500, not the information recorded only in the one integrated with the navigation device 500 hardware.
  • the navigation device 500 acquires map information via the communication network through the communication I / F 514, for example.
  • the acquired map information is stored in the RAM 503 or the like.
  • the audio I / F 508 is connected to a microphone 509 for audio input and a speaker 510 for audio output.
  • the sound received by the microphone 509 is A / D converted in the sound I / F 508.
  • sound is output from the speaker 510.
  • Examples of the input device 511 include a remote controller having a plurality of keys for inputting characters, numerical values, various instructions, a keyboard, a mouse, a touch panel, and the like.
  • the video I / F 512 is connected to the display 513.
  • the video I / F 512 includes, for example, a graphic controller that controls the entire display 513, a buffer memory such as VRAM (Video RAM) that temporarily records image information that can be displayed immediately, and a graphic controller. It consists of a control IC that controls the display of the display 513 based on the output image data.
  • Display 513 displays icons, cursors, menus, windows, or various data such as characters and images.
  • a CRT, a TFT liquid crystal display, a plasma display, or the like can be adopted.
  • Communication I / F 514 is connected to a communication network via radio, and functions as an interface between other navigation devices 500 and CPU 501. Communication between the navigation devices 500 via the communication I / F 514 may be performed directly or via a predetermined base station.
  • the communication I / F 514 is further connected to a communication network such as the Internet via wireless, and also functions as an interface between the communication network and the CPU 501.
  • Communication networks include LANs, WANs, public line networks, mobile phone networks, and the like.
  • the communication I / F 514 includes, for example, an FM tuner, a VICS (Vehicle Information and Communication System) / Beacon Resino, a non-spring communication device, and other communication devices.
  • VICS Vehicle Information and Communication System
  • Beacon Resino a non-spring communication device, and other communication devices.
  • the 0-3 unit 515 receives a radio wave from a GPS satellite, and outputs information indicating the current position of the vehicles 400 and 410 (current position of the navigation device 500).
  • the output information of the GPS unit 515 is used when the current positions of the vehicles 400 and 410 are calculated by the CPU 501 together with output values of various sensors 516 described later.
  • the information indicating the current location is information that specifies one point on the map data, such as latitude-longitude and altitude.
  • Various sensors 516 are vehicles 400, such as a vehicle speed sensor, an acceleration sensor, and an angular velocity sensor.
  • the information which can judge the position and behavior of 410 is output.
  • the output information of the various sensors 516 is used for the calculation of the current location by the CPU 501 and the measurement of the change in speed and direction.
  • Camera 517 is mounted on a vehicle and photographs the back of the vehicle.
  • the captured video is converted into data for recording by the video I / F 512, and is recorded on the RAM 503, the magnetic disk 505, or the optical disk 507 depending on the application.
  • the camera 517 is not limited to a normal visible light power camera, and may have a special function such as an infrared camera.
  • a shooting angle adjustment function that can change the shooting angle in accordance with control from the CPU 501 may be provided.
  • the selection unit 111 in the broadcast communication device 110 realizes its function by, for example, the CPU 501, the ROM 502, and the input device 511.
  • the acquisition unit 112 realizes its function by, for example, the CPU 501, the ROM 502, the magnetic disk drive 504, the magnetic disk 505, and the communication I / F 514.
  • the address generation unit 113 realizes its function by, for example, the CPU 501, the ROM 502, and the RAM 503.
  • the distribution unit 114 realizes its function by, for example, the CPU 501, ROM 502, and communication I / F 514.
  • the acquisition unit 121 in the communication terminal device 120 shown in FIG. 1 realizes its function by the CPU 501, ROM 502 and communication 1 / F 514.
  • the inquiry unit 122 realizes its function by, for example, the CPU 501 and the communication I / F 514.
  • the determination unit 123 realizes its function by, for example, the CPU 501, ROM 502, and RAM 503.
  • the reception control unit 124 realizes its function by, for example, the CPU 501, the ROM 502, and the communication I / F 514.
  • FIG. 6 is a flowchart illustrating an example of processing contents of the navigation device on the broadcast information distribution side according to the first embodiment.
  • step S601 it is first determined whether broadcast information for a specific communication area (for example, communication area A) has been received (step S601). Here, it waits until the broadcast information is received (step S601: No loop). When the broadcast information is received (step S601: Yes), a base station whose communication area is a specific communication area is searched (step S602).
  • step S603 it is determined whether or not the base station ID is held as the identification information of the base station (for example, base station 420A) searched in step S602 (step S603).
  • the ID of the searched base station is held! /, NA! / (Step S603: No)
  • a series of processing ends.
  • step S603 if the searched base station ID is held (step S603: Yes), an IP address for broadcast communication including the searched base station ID is generated (step S603: Yes). Step S 604).
  • broadcast information is distributed by assigning the IP address generated in step S604. Step S605), and the series of processing ends.
  • FIG. 7 is a flowchart illustrating an example of processing contents of the navigation device on the broadcast information receiving side according to the first embodiment.
  • the navigation device on the broadcast information receiving side refers to the navigation device 500 mounted on all the vehicles 410 other than the vehicle 400.
  • step S701 it is determined whether or not the broadcast information distributed from the navigation device 500 of the vehicle 400 has been received.
  • the system waits until the broadcast information is received (step S701: No loop).
  • step S701: Yes the received broadcast information power also acquires the base station ID of the distribution destination (step S702).
  • the base station ID is inquired to the base station 420 to which the own apparatus (in this case, the navigation apparatus 500 mounted on the vehicle 410A or the vehicle 410B) can be connected (step S703).
  • the navigation device 500 mounted on the vehicle 410A makes an inquiry to the base station 420A
  • the navigation device 500 mounted on the vehicle 410B makes an inquiry to the base station 420B by the processing of step S703. .
  • step S704 it is determined whether or not the base station ID acquired in step S702 matches the base station ID inquired in step S703 (step S704). If they do not match (step S704: No), it is determined that the broadcast information distributed is not intended for the device itself! /, And the series of processing ends.
  • step S704 if the base station ID matches in step S704 (step S704: Yes), the distributed broadcast information is acquired (step S705). Finally, information corresponding to the broadcast information acquired in step S705 is transmitted to the navigation device 500 on the broadcast information distribution side (step S706), and the series of processing ends.
  • the information required by the delivery side such as the running state (congestion or smoothness) in the area where it is located, weather information, live video taken by the camera 517, etc. I'll do it.
  • the navigation apparatus 500 on the broadcast information distribution side transmits (replies) from the navigation apparatus 500 mounted on the vehicle 410A located in the communication area A of the base station 420A. Information arrives. Therefore, it is possible to collect specified information about communication area A.
  • the identification information is described as being included in the address. However, the identification information may be included in the broadcast information.
  • FIG. 8 is a block diagram showing an example of the configuration of the broadcast communication device and the distribution relay device according to the second embodiment of the present invention.
  • the broadcast communication method according to the second embodiment of the present invention is realized by the broadcast communication device 810 and the distribution relay device 820, and the broadcast information is distributed to the communication terminal device 830.
  • the communication terminal device 830 is located in the communication area 840 configured by any one of the distribution relay devices 820.
  • the broadcast communication device 810 includes a selection unit 811, an acquisition unit 812, an address generation unit 813, and a distribution unit 814.
  • the selection unit 811 receives a selection of a specific communication area from a plurality of communication areas from the user.
  • the plurality of communication areas are each communication area configured by each distribution relay device 820 as described above.
  • the user selects a specific communication area to which broadcast information is to be distributed from the plurality of communication areas. Then, the selection unit 811 accepts this selection.
  • the selection of a specific communication area accepted by the selection unit 811 may be selection of one communication area or selection of a plurality of communication areas. Furthermore, it is received by the selection unit 811.
  • the selection of a specific communication area is not limited to information representing the communication area 840 itself of the distribution relay device 820, but may be information representing the communication area 840 indirectly.
  • any information may be used as long as the information indicates the communication area 840 as a specific communication area.
  • the selection unit 811 may accept information including a place name and address as the specific communication area 840, or may accept information including a latitude / longitude and an area radius.
  • the selection unit 811 can accept selection of a group constituted by a specific communication terminal device (for example, a group including the communication terminal device 830) from the user. This group information is received by the selection unit 811 together with the selection of a specific communication area.
  • a specific communication terminal device for example, a group including the communication terminal device 830
  • the acquisition unit 812 acquires relay identification information representing the distribution relay device 820 whose distribution is possible in the specific communication area 840 selected by the selection unit 811.
  • the relay identification information is a unique character string that represents the distribution relay device 120 that constitutes a predetermined communication area.
  • the acquisition unit 812 can also select a plurality of distribution relay devices 820 having a specific communication area 840 as a distributable range.
  • distribution relay devices 820 having a specific communication area 840 as a distributable range when there are a plurality of distribution relay devices 820 having a specific communication area 840 as a distributable range (part or all), distribution with a part or all of the specific communication area 840 as a distributable range Of the relay devices 820, only the distribution relay device 820 having the widest possible distribution range may be selected, or a predetermined number of distribution relay devices 820 may be selected in the order of wide distribution range. In addition, all the distribution relay devices 820 whose specific communication area 840 is included in the distributable range may be selected, or only the distribution relay device 820 whose communication area 840 is larger than a predetermined area in the distributable range is selected. You may choose.
  • the user may be notified by display or voice! / , if there is no distribution relay device 820 that allows the specific communication area 840 selected by the user to be distributed, the user may be notified by display or voice! / , if all the distribution relay devices 820 that allow a part or all of a specific communication area 840 to be distributed are selected, all of the specific communication area 840 is not within the distributable range. If there is a possibility, the user may be notified by displaying on the map an area of the specific communication area 840 where there is a possibility of communication leakage. In addition, the user may be notified using a list display of specific district names and lot numbers.
  • Distribution relay device 820 is generally provided as a base station or relay station that constitutes a communication network, or a mail server having a function of relaying mail to a local network of a company or facility. ing. Therefore, when the distribution relay device 820 having each communication area is a base station, relay identification information representing the base station is acquired. Also, if the distribution relay device 820 is a relay station, relay identification information representing the relay station is acquired.
  • the specific communication area selected by the selection unit 811 is represented by various information. If the relay identification information represents the communication area 840, for example, the communication area 840 is uniquely identified. The relay identification information of the distribution relay device 820 that has the distribution range is acquired.
  • the procedure for acquiring the relay identification information of the communication area in the acquiring unit 812 is not uniform. For example, if the broadcast communication device 810 has a table in advance that associates the communication area with the relay identification information of the distribution relay device 820 corresponding to the communication area, the selection unit is selected from the table. The communication area selected by 811 is searched, and the relay identification information of the corresponding distribution relay device 820 is acquired.
  • the relay identification information of the distribution relay device 820 that is connected to an external network and has a communication area selected via this network as a distributable range may be retrieved and acquired. Good.
  • the relay identification information of the distribution relay device 820 that makes the communication area selected in the table provided in the broadcast communication device 810 as a distributable range is not prepared, it passes through an external network.
  • the relay identification information of the corresponding distribution relay device 820 may be searched.
  • the table may be periodically updated using an external network so that the relay identification information of the corresponding distribution relay device 820 can be acquired regardless of the communication area selected. .
  • the selection unit 811 sets the specific communication terminal device 830 together with the specific communication area.
  • the acquiring unit 812 acquires group identification information representing the selected group together with the relay identification information of the distribution relay device 820.
  • the address generation unit 813 generates a dedicated address for broadcast communication that distributes each distribution relay device 820 broadcast information from the broadcast communication device 810. Specifically, the relay identification information of the distribution relay device 820 acquired by the acquisition unit 812 is incorporated into a predetermined broadcast communication address. More specifically, the address for broadcast communication is configured by a specific character string representing the broadcast.
  • the relay identification information incorporated in the address for broadcast communication is used as a criterion for determining whether or not broadcast information is distributed in distribution relay device 820. Therefore, the broadcast information provided with the dedicated address generated by the address generation unit 813 is distributed only from the distribution relay device 820 having a specific communication area as a distributable range.
  • the address generation unit 813 relays the communication area.
  • group identification information is incorporated, and an address for broadcast communication is generated so that only the communication terminal device 830 of a specific group can receive the broadcast information.
  • Distribution section 814 distributes broadcast information using the address generated by address generation section 813.
  • the broadcast information distributed from the distribution unit 814 is received by each distribution relay device 820.
  • the distribution relay device 820 includes an acquisition unit 821, a determination unit 822, and a distribution control unit 823.
  • Acquisition unit 821 acquires relay identification information of distribution relay device 820 having a specific communication area incorporated in the address of the broadcast information distributed from broadcast communication device 810 as a distributable range. As described above, the broadcast information is distributed from the broadcast communication device 810 to a plurality of distribution relay devices 820. The acquisition unit 821 first determines whether the broadcast information is distributed. If it is judged and distributed, information on the address given to the broadcast information is acquired, and relay identification information is acquired.
  • Whether or not the distributed information is broadcast information is determined by referring to the address assigned to the broadcast information. As described in the address generation unit 813 of the broadcast communication device 810, an address for broadcast communication is set in the broadcast communication device 810 in advance. This broadcast communication address is also set in the distribution relay device 820 in the same manner. Therefore, if the address given to the broadcast information includes a specific character string that represents the address for broadcast communication, it is determined that the broadcast information is unique, and the relay identification information Perform the acquisition process.
  • the address given to the broadcast information contains only a specific character string representing the address for broadcast communication and no identification information is included, the distributed broadcast information is sent. This means that there are no distribution restrictions on distribution relay device 820. Therefore, the process proceeds to the process of distributing the broadcast information as it is.
  • the determination unit 822 matches the relay identification information of the distribution relay device 820 with the specific communication area acquired by the acquisition unit 821 as the distributable range, and the relay identification information representing the own device (distribution relay device 820). Make a decision.
  • Distribution control unit 823 distributes the broadcast information to communication area 840 that is a distributable area of the own device when the identification information matches by determination unit 822.
  • Communication terminal apparatus 830 uniquely receives broadcast information if distribution relay apparatus 820 in the communication area in which the apparatus is currently distributed distributes the broadcast information. As described above, the broadcast information is distributed only by the distribution relay device 820 that can distribute a specific communication area. Therefore, in communication terminal apparatus 830, the fact that broadcast information has been distributed means that the own apparatus is located within a specific communication area. Therefore, the broadcast information can be received as it is without any special processing in the communication terminal device 830.
  • the communication terminal device 830 has the functions corresponding to the acquisition unit 821 and the determination unit 822 in the distribution relay device 820. It is also possible to make a match between the group identification information included in the address and the group identification information representing the group to which the device belongs. In this case, the broadcast information is designed to be received only when the group identification information matches.
  • broadcast information is distributed only from the permitted broadcast communication device 810, and the distribution relay device that is also permitted. It is also possible to realize a highly confidential broadcast communication in which only 820 can be distributed to the communication terminal device 830.
  • a character string corresponding to each distribution relay device having a specific communication area as a distributable range is set in the acquisition unit 812 of the broadcast communication device 810.
  • a table is provided.
  • the acquisition unit 812 refers to the table and relays the character string corresponding to the distribution relay device that makes the specific communication area selected by the selection unit 811 within the distributable range relay identification information (confidential relay identification information). ) Get as.
  • the address generation unit 813 also generates an address for broadcast communication by incorporating the acquired relay identification information (secret relay identification information) referring to the table.
  • the distribution unit 814 distributes the broadcast information using the address generated by the address generation unit 813 as in the normal processing.
  • the acquisition unit 821 of the distribution relay device 820 is also provided with a table in which character strings corresponding to the distribution relay devices 820 each having a specific communication area as a distributable range are set.
  • This table is the same as that provided in the acquisition unit 812 of the broadcast communication device 810.
  • the acquisition relay device acquires the broadcast identification information and the relay identification information (confidential relay identification information)
  • the distribution relay device relays the specific communication area within the distributable range with reference to the table. Get identification information.
  • the determination unit 822 determines whether the relay identification information acquired in the same way as the normal processing matches the relay identification information of the own device.
  • FIG. 9 is a flowchart showing an example of the processing contents of the broadcast communication apparatus according to the second embodiment.
  • the selection unit 811 has received selection of a communication area (for example, communication area 840) (step S901). here Wait until the selection is accepted (step S901: No loop). If accepted (step S901: Yes), in the acquisition unit 812, whether there is a distribution relay device 820 corresponding to the communication area 840 selected by the selection unit 811. (Step S902).
  • step S902 If there is no distribution relay device 820 corresponding to the communication area 840 in step S802 (step S902: No), the broadcast information cannot be distributed, and thus the series of processes is terminated. On the other hand, when it is determined that there is a distribution relay device 820 corresponding to the communication area 840 (step S902: Yes), the acquisition unit 812 acquires the relay identification information of the distribution relay device 820 (step S903).
  • the address generation unit 813 incorporates the relay identification information acquired by the acquisition unit 812 into the broadcast character string, and generates an address for broadcast delivery (step S904).
  • the distribution unit 814 distributes the broadcast information using the address generated by the address generation unit 813 (step S905), and the series of processing ends.
  • FIG. 10 is a flowchart illustrating an example of processing contents of the distribution relay device according to the second embodiment.
  • the acquisition unit 821 determines whether or not the broadcast information is distributed from the broadcast communication device 810 (step S1001). Here, it waits until the broadcast information is distributed (step S 1001: No loop), and if it is distributed (step S 1001: Yes), whether the broadcast identification address is included in the broadcast information address or not. Is determined (step S1002).
  • step S1002 If it is determined in step S1002 that the relay identification information is incorporated (step S1002: Yes), the acquisition unit 821 acquires the relay identification information (step SI 003), and the determination unit 822 In step S1004, the acquired relay identification information is matched with the relay identification information representing the device itself (step S1004). If the relay identification information does not match due to this determination (step S1004: No), the broadcast information is not subject to reception by the communication terminal apparatus 830 located in the communication area 840 of the distribution relay apparatus 820. Therefore, the series of processing ends without delivering the broadcast information.
  • step S1004 if the relay identification information matches in step S1004 (step S100 4: Yes), the broadcast information is subject to reception by the communication terminal device 830 located in the communication area 840 of the distribution relay device 820. Therefore, the distribution control unit 823 distributes the broadcast information to the communication terminal device 830 (step S 1005), and the series of processing ends.
  • Step S 1002 No
  • the broadcast information is received by all communication terminal apparatuses 830. Therefore, the distribution control unit 823 distributes the broadcast information to the communication terminal device 830 in the communication area 840 (step S1005).
  • the communication terminal device in the designated communication area can be obtained by distributing the broadcast information from the broadcast communication device 810 to the distribution relay device 820, which is effective for the second embodiment of the invention. Broadcast communication limited to 830 can be performed.
  • the reply information can be returned by using the address assigned to the broadcast information from communication terminal apparatus 830 as a reply address.
  • the broadcast communication device 810 can accept a reply only from within a specific communication area. Therefore, it is possible to collect information specifying an area.
  • the distribution relay device 820 compares the relay identification information included in the address of the broadcast information with the relay identification information of the distribution relay device 820 itself. Information is distributed. On the other hand, in the case of other embodiments, distribution relay device 820 distributes all broadcast information, and the matching determination is performed in each communication terminal device 830.
  • Example 1 a case will be described in which broadcast information is distributed via distribution relay apparatus 820 as in the second embodiment.
  • the broadcast distribution device 800 performs the flow chart process of FIG. 9 and distributes the broadcast information to the distribution relay device 820.
  • the distribution relay device 820 determines that the relay identification information included in the address of the broadcast information is relay identification information of the distribution relay device 820
  • the distribution relay device 820 adds the relay identification information of its own device to the broadcast information and distributes it. (It may be distributed as separate information without giving to the broadcast information).
  • the communication terminal device 830 compares the distribution relay device 820 represented by the relay identification information with the relay identification information given by the distribution relay device 820. And this comparison matches Broadcast information is received only when
  • Example 1 instead of performing the processing of steps S 1004 and S 1005 in the flowchart of FIG. 10 in the distribution relay device 820, the communication terminal device 830 determines whether the identification information matches. In the case of Example 1 as well, since broadcast information is received only when the relay identification information matches, broadcast communication is limited to only the communication terminal device 830 in the specified communication area as in the above embodiment. be able to.
  • Example 2 a case will be described in which broadcast information is directly delivered from the broadcast delivery device 810 to each communication terminal device 830 without relaying the delivery relay device 820.
  • the distribution relay device 820 distributes its own relay identification information to the communication terminal device 830 within the distributable range when some distribution processing is performed in the broadcast distribution device 810. Therefore, the communication terminal device 830 located in the distributable range of any one of the distribution relay devices 820 receives and holds the relay identification information of the distribution relay device 820.
  • the communication terminal device 830 acquires the address of the broadcast information, and the distribution information included in the address is transmitted. A determination is made as to whether the relay identification information of the relay device 820 matches the relay identification information that has been distributed from the distribution relay device 820 and held in advance. In the case of Example 2 as well, since broadcast information is received only when the relay identification information matches, broadcast communication limited to only the communication terminal device 830 in the specified communication area as in the above embodiment is performed. Can be done.
  • Example 2 according to the second embodiment of the present invention will be described below.
  • a navigation device having the function of the broadcast communication device 810 or the communication terminal device 830 shown in FIG. 8 is mounted on a vehicle (four-wheeled vehicle, two-wheeled vehicle, etc.). .
  • a navigation device By performing broadcast communication using such a navigation device, information can be collected from other vehicles located in the designated communication area.
  • the broadcast information that can be received only from the navigation device having the function of the broadcast communication device 810 to the navigation device having the function of the communication terminal device 830 located in a specific communication area.
  • Broadcast information is sent from the broadcast communication device 810 to each distribution relay device. Delivered to device 820.
  • the broadcast information address includes the relay identification information of the distribution relay device 820 having a specific communication area 840.
  • the distribution relay device 820 refers to this relay identification information and distributes the broadcast information. A determination is made whether or not. Only the communication terminal device 830 in the communication area 840 to which the broadcast information is distributed from the distribution relay device 820 receives the broadcast information.
  • Communication terminal device 830 that received the broadcast information transmits the reply information corresponding to the content of the broadcast information to broadcast communication device 810 that is the broadcast information distribution source.
  • the broadcast communication device 810 of the distribution source receives the reply information from the communication terminal device 830 located in the specific communication area 840.
  • what information is sent as reply information can be set in advance in the broadcast information. Therefore, for example, a navigation device equipped with the broadcast communication device 810 that is the distribution source of the broadcast information collects traffic information around the destination that is about to be collected from vehicles that are actually traveling around the destination. Effective information collection.
  • a vehicle equipped with a navigation device having the functions of both the broadcast communication device 810 and the communication terminal device 830 passes through a base station having the function of the distribution relay device 820.
  • a vehicle equipped with a navigation device with similar functions receives broadcast information.
  • FIG. 11 is an explanatory diagram of an example of a network configuration according to the second embodiment.
  • a network that implements the broadcast method according to the second embodiment includes a vehicle 1100 that delivers broadcast information, and broadcast information that is sent to each communication area via the broadcast information.
  • Base station 1 110 (1110A 1110B) functioning as a distribution relay device for distribution, and broadcast information receiving side vehicle 112 0 (1 120A 1120B) for receiving broadcast information distributed from base station 1110
  • the distributable area of base station 11 10A is communication area A
  • base station 111 The distribution area of OB is communication area B.
  • Each vehicle 1120 on the broadcast information receiving side is, in particular, a vehicle 1120A when located in communication area A, and a vehicle 1120B when located in communication area B.
  • the navigation device of the second embodiment is mounted on the vehicle 1100 and the vehicle 1120 shown in FIG.
  • This navigation device is assumed to be a device having the functions of both the broadcast communication device 810 and the communication terminal device 830 shown in FIG.
  • the hardware configuration of the navigation device according to the second embodiment is the same as that of the navigation device 500 according to the first embodiment described above, and a description thereof will be omitted.
  • the base station 1110 includes a CPU, a ROM, a RAM, a magnetic disk drive, a magnetic disk, and a communication I / F. Each configuration has the same functions as a base station configuring a general communication network.
  • base station 1110 implements the functions of acquisition unit 821, determination unit 822, and distribution control unit 823, similar to distribution relay device 820 in FIG.
  • the acquisition unit 821 realizes its function by, for example, a CPU, a ROM, and a communication I / F.
  • the determination unit 822 realizes its function by, for example, a CPU, a ROM, and a RAM.
  • the distribution control unit 823 realizes its function by, for example, a CPU, a ROM, and a communication I / F.
  • FIG. 12 is a flowchart illustrating an example of processing contents of the navigation device on the broadcast information distribution side according to the second embodiment.
  • Step S 1201 it is first determined whether or not broadcast information for a specific communication area (for example, communication area A) has been received (step S 1201). Here, it waits until the broadcast information is accepted (Step S 1201: No Nore), and if accepted (Step S 1201: Yes), searches for the base station 1110A having the communication area A as the communication area (Step S 1201: Yes). S 1202).
  • step SI 203 it is determined whether or not the base station ID is held as the identification information of the base station 1110A searched in step S1202 (step SI 203). If the base station ID of the searched base station 11 10A is held! /, NA! / (Step S1203: No), the broadcast information cannot be delivered, so a series of processing is performed as it is. finish.
  • step S1203 If the base station ID of the searched base station 1110A is held in step S1203 (step S1203: Yes), the broadcast communication including the base station ID of the searched base station 1110A is performed. An IP address is generated (step S 1204), the generated IP address is assigned to each base station 1110 and broadcast information is distributed (step S 1205), and the series of processing ends.
  • FIG. 13 is a flowchart illustrating an example of processing contents of the base station according to the second embodiment.
  • the navigation device 500 on the broadcast information distribution side also determines whether or not the distributed broadcast information has been received (step S1301). Here, it waits until the broadcast information is received (step S 1301: No loop). When it is received (step S 1301: Yes), the base station ID of the distribution destination (base station 1110A ID) is received from the received broadcast information. (Step S1302).
  • the base station ID acquired in step S1302 is the own device (base station 1110A,
  • step S1303 It is determined whether or not it is the same as the base station ID of 1110B) (step S1303).
  • step S 1303 No
  • communication area B of base station 1110B Because it is not the communication area selected as the delivery destination, the series of processing is terminated without delivery.
  • step S1303 when the acquired base station ID and the base station ID of the own device are the same in step S1303 as in base station 1110A (step S1303: Yes), the broadcast information is transmitted to the communication area. A is delivered to the navigation device 500 on the receiving side in step A 1 (step S 1304), and the series of processing ends.
  • the broadcast information receiving side navigation apparatus 500 refers to all the vehicles 1120A located in the communication area A of the base station 1110A.
  • the base station 1110 distributes the broadcast information within the communication area of its own device only when the base station ID included in the address of the broadcast information matches. To do. Therefore, if no other identification information is included in the base station, the broadcast information receiving side navigation device 500 to which the broadcast information has been distributed uniquely receives the broadcast information.
  • the navigation device 500 on the broadcast information receiving side refers to the group ID. To determine whether or not reception is possible. Therefore, including the case described above, the processing of the navigation apparatus 500 on the broadcast information receiving side will be described below with reference to FIG.
  • FIG. 14 is a flowchart illustrating an example of processing contents of the navigation device on the broadcast information receiving side according to the second embodiment.
  • it is first determined whether or not the broadcast information has been distributed from the base station 1110A (step S1401).
  • it waits until the broadcast information is received (step S 1401: No loop).
  • step S1401: Yes it is determined whether the group ID has been acquired from the address of the broadcast information (step S1401: No).
  • S 1402 determines whether the group ID has been acquired from the address of the broadcast information.
  • step S1402 If the group ID cannot be acquired from the address in step S1402 (step S1402: No), it indicates that the group ID is not included in the broadcast information. This means that the broadcast information is to be received by all the navigation devices 500 in the communication area A. Therefore, the process proceeds to step S1404 so that the broadcast information is received by the navigation device 500 mounted on all the vehicles 1120A in the communication area A.
  • Step S1402 Yes
  • the group ID is obtained from the address in step S1402, Step S1402: Yes
  • the navigation devices 500 mounted on the vehicle 1120A in the communication area A only the navigation devices 500 belonging to a specific group are targeted for receiving the broadcast information. Therefore, subsequently, it is determined whether or not the acquired group ID is the same as the group ID of the own device (step S1403).
  • step S1403 if the acquired group ID is not the same as the group ID of the own device (step S 1403: No), the broadcast information distributed is not subject to the own device! /, A series of processing ends without receiving.
  • step S1403 if the acquired group ID is the same as the group ID of the own device (step S1403: Yes), it is determined that the own device falls under a specific group. Accordingly, the broadcast information is received, information corresponding to the received broadcast information is transmitted (returned) to the navigation apparatus 500 on the broadcast information distribution side (step S 1404), and the series of processing ends. If the group ID cannot be obtained from the address in step S1402 (step S1402: No), the process of step S1404 is similarly performed and the series of processes is terminated.
  • the broadcast information is all within the communication area A (except when a group ID is included). ) Is delivered to the navigation device 500 installed in the vehicle 1120A and received. Then, predetermined information is returned to the vehicle 1100 only from the vehicle 1120A in the area A.
  • the information for the reply, the Nabigeshiyon device 500 of broadcast information delivery side can be set whether to return information such as the rough or Jimedo. Specifically, for example, it is possible to send back any information required by the delivery side, such as the running state (congestion or smoothness) in the area where it is currently located, weather information, live video taken by the camera 517, etc. it can
  • the broadcast communication method described in the first and second embodiments can be realized by executing a prepared program on a computer such as a personal computer or a workstation.
  • This program is recorded on a computer-readable recording medium such as a hard disk, flexible disk, CD-ROM, MO, or DVD, and is executed by being read from the recording medium by the computer.
  • the program may be a transmission medium that can be distributed via a network such as the Internet.

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Abstract

Lors de la réception de la sélection d'une zone de communication particulière (140) provenant d'un utilisateur par l'intermédiaire d'une unité de sélection (111), un dispositif de communication de diffusion (110) acquiert un identifiant de la zone de communication particulière (140) par une unité d'acquisition (112). D'autre part, une unité de génération d'adresse (113) génère une adresse de communication de diffusion contenant l'identifiant de la zone de communication particulière (140). Une unité de distribution (114) fournit l'adresse générée à l'information de diffusion et la distribue. Lorsque l'information de diffusion est distribuée, un dispositif de terminal de réseau (120) acquiert l'identifiant à partir de l'information de diffusion à l'aide de l'unité d'acquisition (112) et se renseigne auprès d'une station de base (130) concernant l'identifiant de la zone de communication (140) sur la position actuelle en utilisant une unité de demande de renseignement (122). Une unité de jugement (123) juge si l'identifiant acquis correspond à l'identifiant ayant fait l'objet de la demande de renseignement. Si la réponse est positive uniquement, une unité de commande de réception (124) reçoit l'information de diffusion.
PCT/JP2007/070355 2006-10-18 2007-10-18 Dispositif de communication de diffusion, dispositif de terminal de réseau, dispositif de relais de distribution, procédé de communication de diffusion, programme de communication de diffusion et support d'enregistrement WO2008047870A1 (fr)

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JP2006-283645 2006-10-18
JP2006283645 2006-10-18
JP2006287589 2006-10-23
JP2006-287589 2006-10-23

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US8848594B2 (en) 2008-12-10 2014-09-30 Blackberry Limited Method and apparatus for discovery of relay nodes
JP2012511866A (ja) * 2008-12-10 2012-05-24 リサーチ イン モーション リミテッド 中継ノード発見のための方法および装置
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US8402334B2 (en) 2008-12-17 2013-03-19 Research In Motion Limited System and method for hybrid automatic repeat request (HARQ) functionality in a relay node
US8837303B2 (en) 2008-12-17 2014-09-16 Blackberry Limited System and method for multi-user multiplexing
US8355388B2 (en) 2008-12-17 2013-01-15 Research In Motion Limited System and method for initial access to relays
US9379804B2 (en) 2008-12-17 2016-06-28 Blackberry Limited System and method for hybrid automatic repeat request (HARQ) functionality in a relay node
US9484989B2 (en) 2008-12-17 2016-11-01 Blackberry Limited System and method for autonomous combining
US9571179B2 (en) 2008-12-17 2017-02-14 Blackberry Limited System and method for multi-user multiplexing
US8446856B2 (en) 2008-12-19 2013-05-21 Research In Motion Limited System and method for relay node selection
US8699547B2 (en) 2008-12-19 2014-04-15 Blackberry Limited Multiple-input Multiple-output (MIMO) with relay nodes
US8824359B2 (en) 2008-12-19 2014-09-02 Blackberry Limited System and method for resource allocation
US8335466B2 (en) 2008-12-19 2012-12-18 Research In Motion Limited System and method for resource allocation
US9191878B2 (en) 2008-12-19 2015-11-17 Blackberry Limited System and method for relay node selection
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