> Katsuhiro, Jeffrey, please clarify what the control plane means here. > E.g., (1) control plane in mobility management (MM) and session management (SM) in 5G architecture, > (2) signaling protocols for N1/2 and N4, > or (3) control plane for IP routing, BGP, etc.,
In the context I'm referring to, the "Control Plane" encompasses (1) control plane in Mobility Management (MM) and Session Management (SM) in the 3GPP mobile network architecture, and the act of preserving this information within the (R)AN is what we refer to as "Control Plane Convergence." Within this context, I believe that the genuine value of the ANUP concept arises from the state in which the (R)AN(-UP) retains MM and SM data through Control Plane Convergence. Hence, in alignment with Miya's perspective, we believed that limiting discussions solely to the User Plane would make collaboration with 3GPP quite challenging. However, as David pointed out, it's possible that the IETF Working Group (WG) or the IRTF Research Group (RG) may not be the most suitable forums for addressing this issue. Lastly, in the context I'm referring to, and as Jeffrey has mentioned, the collaboration with 3GPP's Signaling Protocol, as represented by N1, N2, and N4, is being discussed in draft-mhkk, and there is no apparent conflict between these discussions and draft-zzhang. Best Regards, Katsuhiro Horiba
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