| 摘要 |
A mobile communication system and method enables measurement of the time (round-trip time) required for data transmission between a retransmission controller and a mobile station. The mobile communication system is HSDPA-compatible and comprises a mobile station, a wireless base station and a retransmission controller which transmits data units to the mobile station via the wireless base station, the mobile communication system characterized as being provided with a control part, which, when obtaining the round-trip time with respect to transmission between the mobile station and the retransmission controller, obtains [the round-trip time] in accordance with the reception of an ACK signal relating to H-ARQ control broadcast from the mobile station, and uses the transmission time in the wireless interval between the mobile station and the wireless base station.
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