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    • 48. 发明授权
    • Broadcast encryption key distribution system
    • 广播加密密钥分发系统
    • US08094822B2
    • 2012-01-10
    • US10509872
    • 2004-02-03
    • Hideyuki Suzuki
    • Hideyuki Suzuki
    • H04L9/00
    • H04W12/04H04L9/0825H04L9/083H04L9/3263H04L12/189H04L45/54H04L63/061H04L2209/601H04L2209/80H04W12/02H04W84/18
    • Each terminal in a wireless ad-hoc communication system includes an encryption-key management list table 660. The encryption-key management list table 660 stores, in association with a terminal identifier 661 such as a MAC address, a unicast encryption key 662 for use in unicast communication with a terminal identified by the terminal identifier 661, and a broadcast encryption key 663 used when the terminal identified by the terminal identifier 661 performs broadcast communication. Therefore, a broadcast encryption key is provided for each terminal that performs broadcast communication, and the broadcast encryption keys are managed by the individual terminals in an independent and distributed manner. This allows independent and distributed management of broadcast encryption keys in a wireless ad-hoc communication system.
    • 无线自组织通信系统中的每个终端包括加密密钥管理列表表660.加密密钥管理列表表660与诸如MAC地址的终端标识符661相关联地存储用于使用的单播加密密钥662 与由终端标识符661标识的终端的单播通信以及当由终端标识符661标识的终端执行广播通信时使用的广播加密密钥663。 因此,为执行广播通信的每个终端提供广播加密密钥,广播加密密钥由各个终端以独立且分布的方式进行管理。 这允许在无线自组织通信系统中独立和分布式地管理广播加密密钥。
    • 50. 发明申请
    • RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION SYSTEM, RADIO COMMUNICATION METHOD, AND PROGRAM
    • 无线电通信设备,无线电通信系统,无线电通信方法和程序
    • US20110122835A1
    • 2011-05-26
    • US12907351
    • 2010-10-19
    • Masahiko NaitoKatsutoshi ItohHideyuki SuzukiErika SaitoTomoya YamauraNatsuki Itaya
    • Masahiko NaitoKatsutoshi ItohHideyuki SuzukiErika SaitoTomoya YamauraNatsuki Itaya
    • H04W40/00
    • H04W76/15H04W8/005H04W76/14H04W76/23
    • There is provided a radio communication device including a reception unit which receives information indicating a connection state or a communication capability of another radio communication device which the radio communication device attempts to connect to, and a selection unit which selects, depending on the information received by the reception unit, which communication is to be performed from among first communication in which a direct connection to such other radio communication device is established and direct communication with such other radio communication device is performed, second communication in which a connection to such other radio communication device via a base station is established and direct communication with such other radio communication device is performed, and third communication in which a connection to such other radio communication device via the base station is established and indirect communication with such other radio communication device via the base station is performed.
    • 提供了一种无线电通信装置,其包括:接收单元,其接收指示无线电通信设备尝试连接的另一无线电通信装置的连接状态或通信能力的信息;以及选择单元,其根据由 在与其他无线通信装置建立直接连接的第一通信和与其他无线通信装置的直接通信的第一通信中进行通信的接收部,进行与其他无线通信的连接的第二通信 通过基站建立设备,并且执行与这种其他无线电通信设备的直接通信,以及第三通信,其中经由基站与这种其他无线电通信设备的连接被建立,并且经由基站与这种其他无线电通信设备的间接通信 站执行。