Interworking Proxy between GTP based and PMIP based interfaces
The present document is to evaluate the feasibility of introduction of an Interworking Proxy (IWP) between GTP-based S8 and, PMIP-based S8 and S9 interfaces as described in 3GPP TS23.402 [2] Annex A. This evaluation will be based on the study of various concrete interworking deployment scenarios for which an IWP may be used. For each scenario, it will be analysed how the IWP fulfils the specific interworking requirements and performs the mapping of procedures and the corresponding parameter handling. The U-plane Interworking will also be analysed for each scenario.
The present document will study the mechanism for the interworking scenarios, e.g. IWP selection, message binding.