| 摘要 |
<p>The second data transfer unit (RN S/P-GW 8) terminates a relay-station data bearer provided between a relay station (RN 2) and the second data transfer unit, and transfers user data between a first data transfer unit (UE S/P-GW 6) and the relay station (RN 2) by associating a mobile-station data bearer provided between the mobile station (RN-UE 3) and the first data transfer unit (UE S/P-GW 6) with the relay-station data bearer. When a belonging destination of the relay station (RN 2) is changed from the first base station (DeNB 1-1) to the second base station (DeNB 1-2), a relay-station mobility management unit (RN MME 7) changes a path of the relay-station data bearer, which is terminated by the relay station (RN 2) and the second data transfer unit (RN S/P-GW 8), so as to pass through the second base station (DeNB 1-2). It is thereby possible, for example, to change base stations without interrupting communication of a mobile station (RN-UE 3) during operation of a relay node cell.</p> |
