| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain a radio base station device capable of performing frequency control even in the case of time information that exceeds a predetermined transmission delay amount. <P>SOLUTION: The radio base station device 1 for controlling a clock frequency on the basis of time information obtained from a reference time source device 3 includes: a time information acquiring part 11 for transmitting a plurality of time information requests in each execution of frequency control and acquiring a time in its own device upon receiving time information each time the time information is obtained from the reference time source device 3; a return delay comparison part 13 for calculating a difference between time information and a time in its own device upon receiving the time information in each combination of the time information and the time in its own device upon receiving the time information, and selecting a combination to be a value that is equal to transmission delay in a combination selected when performing the past frequency control among corresponding combinations; and a control variable calculation part 14 for calculating a control variable over the clock frequency of its own device by using the combination selected by the return delay comparing part 13. <P>COPYRIGHT: (C)2011,JPO&INPIT |
