| 摘要 |
When a handover of a UE (20) occurs, a P-GW (60) sets a downlink data forwarding path that passes via a Target S-GW and a Target eNB, and when the serving gateway device switches from a Source S-GW to a Target S-GW that manages a Target eNB because of a transition of the UE (20), the P-GW (60) transmits an end marker, which indicates end of forwarding of the downlink data via a Source eNB, to the Source S-GW in accordance with the setting of the downlink data forwarding path. |
