| 摘要 |
Systems and methods allow 3GPP and non-3GPP access with interworking between GTP-based networks and PMIP-based networks. For handover attachment of a UE, an IWP can be provided the address of the PGW which was used in the initial attachment of the UE so that, for example, an IP address can be maintained for an ongoing data connection established with the UE. Alternatively, the same IWP can operate as the proxy for all data connections with the UE such that the IWP is aware of the PGW used for the initial attachment and can reuse the same PGW for handover.
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