| 摘要 |
<P>PROBLEM TO BE SOLVED: To achieve seamless handover of a mobile station between base stations having different frequency bands. <P>SOLUTION: In response to the start of handover of a mobile station 12 from a base station 14-1 to a base station 14-2, the base station 14-2 decides an ANCH2 to be assigned to the mobile station 12 from among the frequency bands used by the base station 14-2, and notifies the mobile station 12 of the decided ANCH2 via a CCH (S100-S102). If a frequency difference between an ANCH1 and the ANCH2 is not more than the frequency bandwidth used by the mobile station 12, the mobile station 12 shifts its own used frequency from the used frequency of the based station 14-1 to a frequency band including the ANCH1 and the ANCH2 (S108). After that, the mobile station 12 establishes a connection to the base station 14-2 via the ANCH2 (S110-S120), then disconnects the connection with the base station 14-1 (S122), and further shifts its own used frequency band to the frequency band of the base station 14-2 (S124). <P>COPYRIGHT: (C)2011,JPO&INPIT |
