| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a software defined radio set which can perform control even when a failure occurs in a network, although a prior art software defined radio set becomes unable to perform control when a failure occurs in a network since the prior art software defined radio set performs control from a control terminal through the network. <P>SOLUTION: A software defined radio set is usually under control of a control terminal 4, and performs an operation based on a control signal transmitted from the control terminal 4 through a network 3. When a serial communication with a maintenance terminal 5 is established through a serial interface, a control shift notification is outputted to the control terminal 4, and the software defined radio set moves under the control of the maintenance terminal 5. The software defined radio set performs the operation based on the control signal transmitted from the maintenance terminal 5 by the serial communication. When no serial data is received for a fixed time after serial data reception, the software defined radio set outputs a control restoring notification to the control terminal 4 and moves under control of the control terminal 4 again. <P>COPYRIGHT: (C)2008,JPO&INPIT |
