In NSA networking, which of the following objects are unnecessary to configrued for a gNodeB in SI self-setup scenarios?

In a 5G NSA (Non-Standalone) architecture, the gNodeB's user plane connects to the 4G Core's Serving Gateway (S-GW). The specific S-GW for a user's session is dynamically selected by the MME from a pool. This S-GW address information is then signaled to the gNodeB via the master eNodeB during the SgNB Addition procedure. Consequently, a static, pre-configured USERPLANEPEER object representing a single S-GW is unnecessary, as the gNodeB learns this information dynamically on a per-session basis.

A. USERPLANEHOST defines the gNodeB's own local IP address for the user plane. This is a fundamental parameter that must be configured.
C. SCTPPEER defines the peer eNodeB for the X2 control plane interface. This SCTP-based link is essential for NSA operation and must be established.
D. SCTPHOST defines the gNodeB's own local IP address for SCTP associations. This is a fundamental parameter that must be configured.

1. 3GPP TS 36.423 V15.6.0 (2019-06). Evolved Universal Terrestrial Radio Access Network (E-UTRAN); X2 application protocol (X2AP). Section 8.3.4, "SgNB Addition Preparation," details the signaling of the S-GW transport layer address to the SgNB (gNodeB).

2. Huawei Technologies Co., Ltd. (2021). 5G RAN Feature Parameter Description. Section on Transport Management, describing the dynamic nature of S1-U peer establishment in NSA mode.