日本丰田IT开发中心成功利用白频段(指被分配做广播使用,但实际没有被使用的无线电频率)进行了车与车之间的无线电通信实验。作为下一代汽车安全技术之一,车与车之间的无线电通信技术被业界寄予厚望。目前,日本已为其划分了700MHz带宽的频率资源,但在技术普及的过程中仍将遇到可用频率不足等瓶颈。使 Japan’s Toyota IT Development Center successfully conducted a radio-communications experiment between vehicles using white-band (referring to radio frequencies allocated for broadcast use but virtually unused). As one of the next generation of automotive safety technologies, the radio communication technology between cars and vehicles is expected by the industry. At present, Japan has divided its frequency resources of 700MHz bandwidth, but will still encounter such bottlenecks as lack of available frequency in the process of technology popularization. Make