WO2009147959A1 - Système de communication intervéhicules et terminaux de communication - Google Patents

Système de communication intervéhicules et terminaux de communication Download PDF

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Publication number
WO2009147959A1
WO2009147959A1 PCT/JP2009/059455 JP2009059455W WO2009147959A1 WO 2009147959 A1 WO2009147959 A1 WO 2009147959A1 JP 2009059455 W JP2009059455 W JP 2009059455W WO 2009147959 A1 WO2009147959 A1 WO 2009147959A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
communication
transmission stop
emergency communication
transmission
Prior art date
Application number
PCT/JP2009/059455
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English (en)
Japanese (ja)
Inventor
靖志 曽我部
敏典 堀
幸政 永井
博昭 平井
俊明 富澤
哲也 小坂
Original Assignee
三菱電機株式会社
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 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to JP2010515831A priority Critical patent/JP5079090B2/ja
Publication of WO2009147959A1 publication Critical patent/WO2009147959A1/fr

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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
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections
    • 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
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present invention relates to an inter-vehicle communication system in ITS (Intelligent Transport Systems).
  • Patent Document 2 a method in which each communication station confirms the occupation state of media and sets a communicable range in which transmission and reception are possible for each transmission station is disclosed in Patent Document 2 below.
  • Patent Document 3 a method for estimating a communication area using a reception level of a received inter-vehicle communication data and a propagation characteristic model and suppressing an unnecessary increase in communication traffic is disclosed in Patent Document 3 below.
  • Packet collision is reduced by limiting the communication area and reducing unnecessary transfers in inter-vehicle communication.
  • JP-A-2005-115508 pages 3 to 4 JP 2005-253047 A, pages 15 to 16 JP 2007-074145 A3, page 4
  • the present invention has been made in view of the above, and an object of the present invention is to obtain a vehicle-to-vehicle communication system and a communication terminal suitable for emergency communication requiring a fixed time system.
  • the present invention is a vehicle-to-vehicle communication system in which emergency communication that is higher priority than normal communication is performed, and a vehicle that starts emergency communication includes: Along with transmission stop request information for requesting transmission stop in normal communication, an emergency communication area that can communicate directly with other vehicles, a hidden terminal area that cannot directly communicate but affects emergency communication, and emergency communication The area information indicating the non-congested terminal area that does not affect the transmission is created, the transmission stop request information and the area information are transmitted as a transmission stop command, and the vehicle that has received the transmission stop command directly or indirectly transmits Based on the stop request information and the area information, it is determined whether to transmit a transmission stop command and whether to stop the transmission.
  • FIG. 1 is a diagram illustrating a relationship between a vehicle and an area.
  • FIG. 2 is a diagram illustrating an arrangement of vehicles at the time of emergency communication according to the first embodiment.
  • FIG. 3 is a diagram illustrating a configuration example of a communication slot.
  • FIG. 4 is a diagram illustrating a configuration example of a communication slot at the time of emergency communication according to the second embodiment.
  • FIG. 5 is a diagram illustrating an arrangement of vehicles at the time of emergency communication according to the third embodiment.
  • FIG. 6 is a diagram illustrating an arrangement of vehicles at the time of emergency communication according to the fourth embodiment.
  • FIG. 7 is a time chart showing the operation of the fourth embodiment.
  • FIG. 8 is a diagram illustrating an arrangement of vehicles at the time of emergency communication according to the fifth embodiment.
  • FIG. 9 is a diagram illustrating an arrangement of vehicles at the time of emergency communication according to the fifth embodiment.
  • FIG. 10 is a time chart showing the operation of the fifth embodiment.
  • FIG. 1 is a diagram illustrating an example of a vehicle and an area that perform inter-vehicle communication.
  • vehicles 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 are provided with communication devices that can perform inter-vehicle communication.
  • the emergency communication area, the hidden terminal area, and the non-congested terminal area represent each area of the vehicle 1 that starts emergency communication.
  • Vehicles 2, 3, 4, and 5 are vehicles that can communicate directly with vehicle 1.
  • the vehicles 6, 7, and 8 are vehicles called hidden terminals that cannot directly communicate with the vehicle 1 and cannot confirm the presence, but have an influence on the emergency communication of the vehicle 1.
  • the vehicles 9 and 10 are vehicles that do not affect the emergency communication of the vehicle 1.
  • the emergency communication area is an area where the vehicle 1 can directly communicate with other vehicles when performing emergency communication.
  • the hidden terminal area is an area where there is a hidden terminal that affects emergency communication performed by the vehicle 1.
  • the non-congested terminal area is an area where vehicles that do not affect emergency communication performed by the vehicle 1 exist.
  • a wireless communication system constituting an ad hoc network is assumed as inter-vehicle communication in ITS.
  • emergency communication such as the occurrence of an accident or broken vehicle information requires communication with higher priority than normal communication for safety and security.
  • the vehicle 1 requests the surrounding vehicle to stop transmission related to the normal communication.
  • the request transmitted to the surrounding vehicles is referred to as “transmission stop request information”.
  • the vehicle 1 cannot directly transmit the transmission stop request information to the vehicle in the hidden terminal area. Therefore, for example, the vehicle 3 transfers transmission stop request information to the vehicle 7.
  • transmission stop request information is transferred to the vehicle 4 from the vehicle 4 and from the vehicle 5 to the vehicle 8, respectively.
  • the vehicle 10 when the vehicle 10 starts emergency communication due to an accident or the like, the vehicle 10 cannot transmit emergency communication to other vehicles because the vehicle 10 has stopped transmission according to the transmission stop request information. That is, there is a possibility that the transmission of emergency information of the vehicle 10 is stopped due to useless transfer.
  • the vehicle that transmits the transmission stop request information includes the position information of the own vehicle in the transmission stop request information, and simultaneously indicates area information (emergency communication area, hidden terminal area, non-congested terminal area). Information) is also transmitted to avoid unnecessary transmission such as transmission of transmission stop request information repeatedly performed between vehicles in a non-congested terminal area and unnecessary transmission stop due to such unnecessary transmission. .
  • FIG. 2 is a diagram illustrating an arrangement of vehicles when emergency communication is performed.
  • the vehicle 14 is a vehicle that starts emergency communication.
  • the vehicles 15 and 16 are vehicles existing in the emergency communication area.
  • the vehicle 17 is a vehicle that exists in the hidden terminal area.
  • the vehicle 18 is a vehicle that exists in a non-congested terminal area.
  • the vehicle 14 Prior to the start of emergency communication, the vehicle 14 transmits transmission stop request information to the surrounding vehicle 15 and the vehicle 16. At this time, the vehicle 14 transmits the area information together with the transmission stop request information.
  • the transmission stop request information and the area information are collectively referred to as a “transmission stop command”.
  • the vehicle 15 that has received the transmission stop command from the vehicle 14 transfers the transmission stop command from the vehicle 14 to the surrounding vehicle 17.
  • the vehicle 16 that has received the transmission stop command from the vehicle 14 transfers the transmission stop command from the vehicle 14 to the surrounding vehicle 18.
  • the vehicle 18 in the non-congested terminal area determines that there is no need to transfer any further transmission stop command based on the position information and area information of the vehicle 14 and the position of the host vehicle, and stops transmission from the vehicle 14. Stops instruction transfer. For example, when the transfer destination vehicle is in a non-congested terminal area and exists farther than the host vehicle with reference to the vehicle 14 that starts emergency communication, it is determined that there is no need to transfer a transmission stop command. To do.
  • the vehicle that has received the transmission stop command from the vehicle 14 directly or indirectly by transfer operates as follows depending on the type of area in which the vehicle is present.
  • the vehicle 14 transmits a transmission stop command to the surrounding vehicles while appropriately updating the contents (area information, etc.) in consideration of the movement of the host vehicle and the surrounding vehicles.
  • contents area information, etc.
  • the vehicle 14 includes the position information of the own vehicle in the transmission stop request information, for example, other vehicles other than the vehicle 14 are the transmission source of the transmission stop request information from the area information and the vehicle position information.
  • the vehicle can be identified.
  • the area definition of the area information may be a distance from the vehicle 14 or an absolute coordinate using GPS.
  • the vehicle 14 has a range in which emergency communication is required (distribution to surrounding vehicles, distribution only to subsequent vehicles, distribution to a wide area, etc.), position information obtained by GPS, and map information obtained from car navigation Based on the above, area information is created.
  • the vehicle 14 can limit the number of vehicles that stop transmission in accordance with the transmission stop command by setting the area in more detail based on the above-described information. As a result, it is possible to suppress a decrease in the throughput of the entire system.
  • a vehicle that starts emergency communication transmits area information to surrounding vehicles together with transmission stop request information.
  • the vehicle that has received the transmission stop request information and the area information can avoid useless transfer and unnecessary transmission stop, and can suppress a decrease in throughput of the entire system. Further, by avoiding unnecessary transmission suspension, it is possible to coexist with emergency communication that has occurred in a non-congested terminal area.
  • Embodiment 2 communication having a slot configuration used in TDMA (Time Division Multiple Access), a slot aloha system, or the like will be described.
  • TDMA Time Division Multiple Access
  • a slot aloha system or the like
  • FIG. 3 is a diagram showing communication slots. For example, as shown in FIG. 3, it is assumed that one superframe is divided into four and TDMA communication is performed. In the case of normal communication, communication is performed between vehicles using four slots in this way.
  • FIG. 4 is a diagram illustrating communication slots during emergency communication.
  • the vehicle 14 has shown the state which has allocated slot # 4 as a slot used for emergency communication.
  • the vehicle 15 that has received the transmission stop command and the slot number notification from the vehicle 14 transfers the transmission stop command and the slot number notification to the vehicle 17.
  • the vehicle 16 that has received the transmission stop command and the slot number notification from the vehicle 14 transfers the transmission stop command and the slot number notification to the vehicle 18.
  • the vehicle that has received the transmission stop command and the slot number notification from the vehicle 14 directly or by transfer operates as follows depending on the type of area in which the vehicle is present.
  • slot # 4 the case of using slot # 4 has been described. However, if the vehicle 14 uses a specific slot before starting emergency communication, the slot is continuously used for emergency communication. May be used as Further, when the vehicle 14 is not communicating until emergency communication is started, any slot including an empty slot may be used for emergency communication.
  • the means for assigning slots is not particularly specified.
  • a vehicle that starts emergency communication allocates a slot of a frame to be used for communication and informs the surrounding vehicle of the information, and a vehicle in an emergency communication area performs emergency communication in the assigned slot.
  • the vehicle in the hidden terminal area is different from that in the first embodiment in that the transmission of only the slot assigned for emergency communication is stopped, and the other operations are the same.
  • a vehicle that starts emergency communication notifies a slot number to be used when transmitting a transmission stop command to surrounding vehicles.
  • the vehicle that has received the transmission stop command and the slot number notification can avoid unnecessary transfer and unnecessary transmission stop, and the overall system throughput decreases. Can be suppressed.
  • coexistence with emergency communication occurring in a non-congested terminal area becomes possible.
  • Embodiment 3 FIG. In the present embodiment, for example, avoidance of congestion that occurs when two vehicles that have caused a collision accident simultaneously perform emergency communication will be described.
  • FIG. 5 is a diagram illustrating a case where two vehicles have a collision accident.
  • a vehicle 19 and a vehicle 20 are vehicles that have caused a collision accident.
  • the vehicle performs emergency communication there is a case where a warning or stop command is issued to the following vehicle when a collision accident occurs.
  • a collision accident caused by two vehicles it is conceivable that two vehicles simultaneously start emergency communication.
  • the number of vehicles that start emergency communication is limited to one.
  • the vehicle that has caused the collision accident may perform emergency communication for the same event.
  • only one vehicle that has started emergency communication first performs emergency communication.
  • the above method can be applied to either the CSMA / CA described in the first embodiment or the communication using the slot configuration of the second embodiment.
  • the number of vehicles that start emergency communication is limited to one.
  • congestion between vehicles performing emergency communication can be avoided, and reduction in throughput of the entire system can be suppressed by reducing redundant communication.
  • emergency communication can be performed if the communication device of one vehicle is operating normally.
  • Embodiment 4 FIG.
  • a vehicle that has received a transmission stop command from a vehicle that starts emergency communication does not transfer a transmission stop command to another vehicle, and completes emergency communication preparation for the vehicle that has transmitted the transmission stop command. A case of transmission will be described.
  • a vehicle that has received a transmission stop command (transmission stop request information and area information) from a vehicle that starts emergency communication transfers the transmission stop command to another vehicle.
  • transmission stop command transmission stop request information and area information
  • congestion occurs due to simultaneous transfer of the vehicles that have received the transmission stop command. This embodiment avoids such congestion.
  • FIG. 6 is a diagram showing the arrangement of vehicles when performing emergency communication.
  • a vehicle 21 is a vehicle that starts emergency communication.
  • the vehicles 22 and 23 are vehicles that exist in the emergency communication area.
  • the vehicles 24 and 25 are vehicles that exist in the hidden terminal area.
  • FIG. 7 is a time chart showing the operation of the fourth embodiment, and shows a procedure in which the vehicle shown in FIG. 6 shifts to an emergency communication state.
  • CSMA / CA is used as the communication method.
  • each vehicle presets a time during which emergency communication preparation completion can be transmitted.
  • the preset time is referred to as “random time”.
  • Each vehicle performs carrier sense after the lapse of a random time, and transmits after confirming the communication state. The random time is gradually shortened every time carrier sense is performed in order to avoid a situation in which a vehicle with a long time setting cannot be transmitted permanently.
  • the vehicle 22 after receiving a transmission stop command from the vehicle 21, the vehicle 22 performs carrier sense after a preset time (random time), and transmits an emergency communication preparation completion to the vehicle 21 because there is no other communication. To do. At this stage, the vehicle 22 stops transmission of normal communication and shifts to an emergency communication state. The vehicle 21 that has received the emergency communication preparation completion immediately returns a confirmation response to the vehicle 22. On the other hand, after receiving the transmission stop command from the vehicle 21, the vehicle 23 performs carrier sense after a preset time (random time), and as a result, the presence of other communication (emergency communication from the vehicle 22 to the vehicle 21 in FIG. 7). Preparation complete) is confirmed, and emergency communication preparation completion is not transmitted at this timing.
  • a preset time random time
  • the vehicle 23 performs carrier sense again after a preset time (random time) from the end of the other communication (confirmation response from the vehicle 21 to the vehicle 22 in FIG. 7), and there is no other communication here. Send emergency communication ready. At this stage, the vehicle 23 stops transmission of normal communication and shifts to an emergency communication state. The vehicle 21 that has received the emergency communication preparation completion immediately returns a confirmation response to the vehicle 23.
  • the vehicle 21 that has received the emergency communication preparation completion further receives the emergency communication preparation completion from another vehicle, and after the predetermined time has elapsed, the vehicle in the emergency communication area The emergency communication is started.
  • the vehicle 21 that has received the emergency communication preparation completion returns the confirmation response immediately.
  • the vehicle that has transmitted the emergency communication preparation completion but has not received the confirmation response may retransmit the emergency communication preparation completion. Is possible.
  • the vehicle that has transmitted the emergency communication preparation completion can surely inform the vehicle 21 of the state of the host vehicle, and the vehicle 21 can start the emergency communication after grasping the state of the vehicle in the emergency communication area.
  • the vehicle 24 in the hidden terminal area cannot receive the transmission stop command from the vehicle 21, but can receive the emergency communication preparation completion transmitted from the vehicle 22 to the vehicle 21. Therefore, although the vehicle 24 has not received the transmission stop command from the vehicle 21, the vehicle 24 is present in the hidden terminal area of the vehicle 21 by receiving the emergency communication preparation completion from the vehicle 22. The transmission is stopped in order to avoid the influence on the emergency communication performed by the vehicle 21. Similarly, the vehicle 25 determines that the host vehicle is present in the hidden terminal area of the vehicle 21 by receiving the completion of emergency communication preparation from the vehicle 23, and transmits to avoid the influence on the emergency communication. Stop.
  • the vehicle 22 that has received the transmission stop command and the slot number notification from the vehicle 21 does not transmit the transmission stop command to the other vehicles, and notifies the vehicle 21 of the emergency communication preparation completion and the slot number notification. Send back.
  • the vehicle 24 can receive the emergency communication preparation completion and the slot number notification returned from the vehicle 22 to the vehicle 21, and therefore determines that the host vehicle exists in the hidden terminal area of the vehicle 21.
  • the vehicle 24 stops transmission of normal communication at the notified slot number in order to avoid an influence on emergency communication.
  • the vehicle 25 receives the emergency communication preparation completion and the slot number notification transmitted from the vehicle 23 to the vehicle 21, and determines that the host vehicle exists in the hidden terminal area of the vehicle 21.
  • the vehicle 25 stops transmission of normal communication at the notified slot number in order to avoid an influence on emergency communication.
  • a vehicle that starts emergency communication generally transmits a transmission stop command to a vehicle in the emergency communication area multiple times. Each time a vehicle that has received a transmission stop command receives the transmission stop command, the vehicle transmits the transmission stop command to another vehicle.
  • a vehicle that starts emergency communication can recognize that the vehicle in the emergency communication area is in an emergency communication state, and therefore does not need to transmit a transmission stop command multiple times. Therefore, the vehicle which starts emergency communication can reduce the frequency
  • the vehicle that has received the transmission stop command is not transferred to other vehicles, it is possible to suppress a decrease in throughput of the entire system.
  • the BUSY state and the packet collision probability at the time of carrier sense can be greatly improved, and the time until emergency communication can be started can be shortened.
  • the vehicle that has received the transmission stop command in the emergency communication area transmits the emergency communication preparation completion to the vehicle that has transmitted the transmission stop command.
  • the vehicle which received the emergency communication preparation completion can start emergency communication after grasping
  • a large number of vehicles do not transfer the transmission stop command at the same time, so that a decrease in throughput of the entire system can be suppressed.
  • Embodiment 5 a case will be described in which a vehicle that has received a transmission stop command transmits a transmission stop command as a proxy.
  • a vehicle that starts emergency communication increases the frequency of transmission of a transmission stop command.
  • an emergency communication area or the like before the vehicle starts inadvertent transmission for a vehicle that has newly entered a hidden terminal area. Can be notified.
  • the vehicle speed and the emergency communication area may vary depending on the city area, suburb, highway, etc., and it is difficult to uniquely determine the transmission frequency.
  • increasing the transmission frequency may reduce the time allocated to the emergency communication information originally intended to be transmitted.
  • a vehicle that starts emergency communication notifies a vehicle that exists in the emergency communication area of a time during which the received transmission stop command can be transmitted to another vehicle. Based on this notification, by transmitting a transmission stop command on behalf of a vehicle that has received the transmission stop command to a vehicle existing in the hidden terminal area, it is possible to reduce the time allocated to the emergency communication information to be originally transmitted. Avoid "sex".
  • FIG. 8 and 9 are diagrams showing the arrangement of vehicles when performing emergency communication. Specifically, FIG. 8 shows the arrangement of vehicles at time t0, and FIG. 9 shows the arrangement of vehicles at time t2.
  • the vehicle 26 is a vehicle that starts emergency communication.
  • the vehicles 27 and 28 are vehicles existing in the emergency communication area.
  • the vehicle 29 is a vehicle that exists in the non-congested terminal area at time t0 (FIG. 8), but moves (FIG. 9) into the hidden terminal area at time t2.
  • the vehicle 30 is a vehicle that exists in the hidden terminal area.
  • FIG. 10 is a time chart showing the operation of the fifth embodiment, and shows a procedure in which the vehicle shown in FIGS. 8 and 9 shifts to an emergency communication state.
  • vehicle 26 transmits a transmission stop command to vehicles 27 and 28.
  • the start timing t1 and allocation time (period 0) of the notification period for the vehicles 27 and 28 receiving the transmission stop command to transfer the transmission stop command and the start timing t3, t4, t5 of the proxy transmission period and the allocation Information on time (period 1) is also transmitted simultaneously.
  • the vehicles 27 and 28 that have received the transmission stop command first transfer the transmission stop command during the notification period.
  • vehicle 30 stops transmission upon receiving a transmission stop command from vehicle 28.
  • the vehicle 29 enters the hidden terminal area.
  • the vehicle 27 that has received the inadvertent transmission transmits the inadvertent transmission to the vehicle 29 within a proxy transmission period previously assigned from the vehicle 26 at time t3.
  • a transmission stop command is transmitted.
  • the vehicle 29 stops transmission upon receiving the transmission stop command.
  • the transmission stop command is not updated until the next transmission stop command (time t6) transmitted by the vehicle that starts emergency communication (the vehicle 26 in the present embodiment), so the period from time t2 to t6 During this, there was a possibility that the vehicle 29 continued to perform inadvertent transmission.
  • the vehicle 27 that has received an inadvertent transmission by the vehicle 29 can stop the transmission of the vehicle 29 by transmitting a transmission stop command on behalf of the vehicle 26.
  • the proxy transmission period (period 1) arrives repeatedly at intervals of the proxy transmission period.
  • the vehicle acting as the proxy of the vehicle 26 transmits a transmission stop command to the vehicle newly entering the hidden terminal area during the proxy transmission period.
  • the proxy transmission period is shorter than the notification period (period0) (period1 ⁇ period0).
  • a time during which another vehicle can perform a proxy transmission of a transmission stop command (notification period and proxy transmission period) is notified. It was decided to. Thereby, the vehicle which starts emergency communication can reduce the transmission frequency of a transmission stop command.
  • the proxy transmission transfer period even if a vehicle that newly entered the hidden terminal area has made a transmission that affects emergency communication, the vehicle that detected this transmission will be the next proxy. Since the transmission stop command is transmitted during the transmission period, it is possible to avoid the influence on emergency communication due to inadvertent transmission.
  • the inter-vehicle communication system according to the present invention is useful when performing emergency communication, and is particularly suitable for emergency communication between vehicles that require punctuality.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Public Health (AREA)
  • Traffic Control Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un système de communication intervéhicules adapté aux communications d’urgence. Le système de communication intervéhicules selon l’invention autorise l’exécution de communications d’urgence, qui sont des communications ayant une priorité supérieure aux communications ordinaires. Par exemple, un véhicule (14) qui lance une communication d’urgence crée une information de demande d’arrêt de transmission pour demander un arrêt de transmission des communications ordinaires et crée également une information de zone qui indique une zone de communication d’urgence dans laquelle le véhicule (14) peut directement communiquer avec d’autres véhicules, une zone de terminal caché dans laquelle le véhicule (14) ne peut pas communiquer directement avec d’autres véhicules mais qui influence la communication d’urgence et une zone de terminal de non congestion n’influençant pas la communication d’urgence. Le véhicule (14) transmet ensuite, sous la forme d’une commande d’arrêt de transmission, aussi bien l’information de demande d’arrêt de transmission que l’information de zone.  Les véhicules (15-18) recevant directement ou indirectement la commande d’arrêt de transmission déterminent, sur la base de l’information de demande d’arrêt de transmission et de l’information de zone, s’ils doivent transmettre la commande d’arrêt de transmission et s’ils doivent réaliser l’arrêt de transmission.
PCT/JP2009/059455 2008-06-04 2009-05-22 Système de communication intervéhicules et terminaux de communication WO2009147959A1 (fr)

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JP2008-147172 2008-06-04

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Cited By (5)

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JP2011160339A (ja) * 2010-02-03 2011-08-18 Denso Corp 車載無線通信システム
WO2011129098A1 (fr) * 2010-04-14 2011-10-20 パナソニック株式会社 Nœuds de communication et nœuds de réseau
CN102340839A (zh) * 2010-07-20 2012-02-01 里格奈科斯1株式会社 在ad-hoc网络中处理数据的装置和方法
WO2016136492A1 (fr) * 2015-02-27 2016-09-01 京セラ株式会社 Terminal sans fil et station de base
CN112203227A (zh) * 2019-07-08 2021-01-08 丰田自动车株式会社 服务器设备、车载设备、信息处理方法和存储介质

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JP2006101294A (ja) * 2004-09-30 2006-04-13 Clarion Co Ltd 車々間通信システム及び車々間通信機

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JP2005229478A (ja) * 2004-02-16 2005-08-25 Clarion Co Ltd 車々間通信システム、無線通信機器及び車々間通信方法
JP2005286756A (ja) * 2004-03-30 2005-10-13 Toyota Motor Corp 移動体間通信経路選択方法、無線通信装置および移動体
JP2006065556A (ja) * 2004-08-26 2006-03-09 Xanavi Informatics Corp 交通情報伝達システムおよび緊急車両報知システム
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011160339A (ja) * 2010-02-03 2011-08-18 Denso Corp 車載無線通信システム
WO2011129098A1 (fr) * 2010-04-14 2011-10-20 パナソニック株式会社 Nœuds de communication et nœuds de réseau
CN102340839A (zh) * 2010-07-20 2012-02-01 里格奈科斯1株式会社 在ad-hoc网络中处理数据的装置和方法
JP2012029270A (ja) * 2010-07-20 2012-02-09 Lig Nexl Co Ltd アドホックネットワークにおけるデータ処理装置およびその方法
CN102340839B (zh) * 2010-07-20 2014-06-18 里格奈科斯1株式会社 在ad-hoc网络中处理数据的装置和方法
WO2016136492A1 (fr) * 2015-02-27 2016-09-01 京セラ株式会社 Terminal sans fil et station de base
CN112203227A (zh) * 2019-07-08 2021-01-08 丰田自动车株式会社 服务器设备、车载设备、信息处理方法和存储介质
CN112203227B (zh) * 2019-07-08 2023-02-28 丰田自动车株式会社 服务器设备、车载设备、信息处理方法和存储介质
US11618468B2 (en) 2019-07-08 2023-04-04 Toyota Jidosha Kabushiki Kaisha Server device, in-vehicle device, information processing method, and storage medium

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