| 摘要 |
There is disclosed an apparatus newly including a handoff request additional transmission control function. According to the handoff request additional transmission control function, when a procedure shifts to a retransmission procedure of a handoff request message A, a usable sequence number (SEQ2) other than a sequence number (SEQ1) for use in transmission of the art message A is selected, Subsequently, the sequence number (SEQ2) is used to transmit the message A having the same content as that of the aforementioned message in a retransmission interval period of the message A in which the sequence number (SEQ1) is used.
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