| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide means for carrying out air synchronization in a base station apparatus of the frequency division duplex system. <P>SOLUTION: A base station apparatus 1b that communicates with a terminal apparatus 2b by the frequency division duplex, in which a frequency of an uplink signal and that of a downlink signal are different from each other, has: a first receiving part 11 that receives the uplink signal from the terminal apparatus 2b at a frequency f<SB POS="POST">u</SB>of the uplink signal; a transmission part 13 that transmits a downlink signal to the terminal apparatus at a frequency f<SB POS="POST">d</SB>of the downlink signal; a second receiving part 12 that receives a downlink signal from the other base station apparatus 1a at the frequency f<SB POS="POST">d</SB>of the downlink signal; a synchronization error detector 17 that detects a synchronization error between the other base station apparatus 1a and the self apparatus 1b based on the downlink signal of the other base station apparatus 1a which is received by the second receiving part 12; and a correction part 18 that corrects the synchronization error based on the synchronization error detected by the synchronization error detector 17. <P>COPYRIGHT: (C)2012,JPO&INPIT |
