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    • 7. 发明申请
    • SYSTEM AND METHOD OF VEHICULAR WIRELESS COMMUNICATION USING AN INTEGRATED COORDINATING ACCESS POINT
    • 使用综合协调接入点的无线通信系统和方法
    • WO2006052944A2
    • 2006-05-18
    • PCT/US2005/040385
    • 2005-11-08
    • TOYOTA TECHNICAL CENTER USA, INC.UNIVERSITY OF CALIFORNIA, BERKELEYLABERTEAUX, Kenneth, P.MAK, TonySENGUPTA, Raja
    • LABERTEAUX, Kenneth, P.MAK, TonySENGUPTA, Raja
    • H04W74/02
    • G08G1/096716G08G1/096783H04W74/02
    • A system and method of vehicular wireless communication over a Dedicated Short Range Communication service band is provided. The system includes a vehicle having a navigation means, a processor, and a communication means for transmitting a message via a wireless communications link. The system includes a control channel for communicating a safety communication and a service channel for communicating a non-safety communication. The control channel is subdivided into a contention-free period having a group management interval, a service announcement interval and a safety exchange interval and a contention period having a non-safety service interval. The system further includes an integrated coordinating access point that operates in both the control channel and service channel. The method includes the steps of determining if the vehicle is within communications range of the region, determining if the vehicle is registered with the access point, and if the vehicle is within the communications range of integrated coordinating access point, determining if a current time is within the safety exchange interval, and transmitting the safety communication by each registered vehicle during the safety exchange interval at the predetermined time for each registered vehicle. The method further includes the steps of determining if the safety communication exchange by every registered vehicle is completed, and permitting the vehicle to leave the control channel if the safety communication exchange is complete, and determining if a current time is within a contention period, and transmitting the non-safety communication if the current time is within the contention period.
    • 提供了一种专用短距离通信服务频带上的车载无线通信系统和方法。 该系统包括具有导航装置,处理器和通过无线通信链路发送消息的通信装置的车辆。 该系统包括用于传送安全通信的控制信道和用于传送非安全通信的服务信道。 控制信道被细分为具有组管理间隔,服务通知间隔和安全交换间隔以及具有非安全服务间隔的争用周期的无争用时段。 该系统还包括在控制信道和服务信道两者中操作的综合协调接入点。 该方法包括以下步骤:确定车辆是否在该区域的通信范围内,确定车辆是否已经与接入点一起登记,以及如果车辆在综合协调接入点的通信范围内,则确定当前时间是否是 在安全交换间隔期间,在每个登记车辆的预定时间内,在安全交换间隔期间,由每个登记车辆发送安全通信。 该方法还包括以下步骤:确定每个注册车辆的安全通信交换是否完成,并且如果安全通信交换完成则允许车辆离开控制信道,并且确定当前时间是否在争用期内,以及 如果当前时间在争用期内,则发送非安全通信。