| 摘要 |
<p>This relay (103) is provided with a setting storage unit (112) and a communication control unit (111). The setting storage unit (112) stores uplink-device information (121) or downlink-device information (122) that indicates a set device that is wirelessly connected to the relay (103) in a first direction, said first direction being either an uplink direction or downlink direction. When a wireless signal constituting a message (140) that contains a direction flag (142) for identifying the travel direction of said wireless signal and transmitter information (141) indicating the device that transmitted the wireless signal is received, the communication control unit (111) uses the direction flag (142) to identify the travel direction of the message (140). If said travel direction is a second direction, i.e. the direction opposite the abovementioned first direction, and the transmitter information (141) indicates the abovementioned set device, the communication control unit (111) updates the transmitter information (141) in the message (140) to information indicating the relay (103) and transmits the updated message (140).</p> |
