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Communication system, relay device, and communication method
申请公布号：US9166671(B2)
申请号：US201214233572
申请日期：2012.05.18
申请公布日期：2015.10.20
发明人：Tanaka Ryo
分类号：H04B3/36;H04B7/14;H04L12/46;H04W4/06;H04W88/04;H04L12/40
主分类号：H04B3/36
代理人：Oliff PLC
地址：Mie JP
摘要：A communication system, a relay device, and a communication method are provided in a configuration where multiple communication devices are divided into multiple groups, a relay device is provided for each group, and the relay device relays data exchanges between groups. The data that is exchanged between a second relay device and an external wireless communication device is stored such that it is distributed among multiple databases of first relay units. Data received from the external communication device is stored in an individual region in the database of the first relay device and a data storage destination table in the second relay device is encrypted. If the first relay device stores data received from an ECU in the database, the second relay device is notified, and the second relay device updates the data storage destination table according to the notification.
主权项：1. A communication system comprising: a plurality of communication device groups, each including a plurality of communication devices; a plurality of first relay devices, one of the first relay devices being provided for each of the communication device groups and including a communication means for exchanging data with any communication device in the corresponding communication device group, a relay means for relaying a data exchange between communication device groups, and a storage means for storing data that is to be relayed; and a second relay device (i) that is connected to the plurality of first relay devices, (ii) includes a communication means for exchanging data with the first relay devices, and a wireless communication means for wirelessly exchanging data with an external device, and (iii) that relays a data exchange between the external device and the plurality of first relay devices, wherein the second relay device includes: a selection means for, if the wireless communication means receives data, selecting one or a plurality of the first relay devices from the plurality of first relay devices,a storage destination storage means for storing the first relay device that was selected by the selection means,a data transmission means for transmitting received data to the first relay device that was selected by the selection means,a data requesting means for, if data is to be transmitted to an external device, making a request to the first relay device that was stored in the storage means, requesting that first relay device to transmit the data, anda data reception means for receiving data transmitted from the first relay device,and the wireless communication means transmits data received by the data reception means to the external device.