nd principles (Release 15), December 2018. 3GPP TS 38.411 NG-RAN, NG layer 1 (Release 15), December 2018. [19] 3GPP TS 38.412 NG-RAN, NG signaling transport (Release 15), December 2018. [20] 3GPP TS 38.413 NG-RAN, NG application protocol (NGAP) (Release 15), December 2018. [21] 3GPP TS 38.414 NG-RAN, NG data transport (Release 15), December 2018. [22] 3GPP TS 38.420 NG-RAN, Xn general aspects and principles (Release 15), December 2018. 3GPP TS 38.421 NG-RAN, Xn layer 1 (Release 15), December 2018. [24] 3GPP TS 38.422 NG-RAN, Xn signaling transport (Release 15), December 2018. [25] 3GPP TS 38.423 NG-RAN, Xn application protocol (XnAP) (Release 15), December 2018. 3GPP TS 38.424 NG-RAN, Xn data transport (Release 15), December 2018. [27] 3GPP TS 38.425 NG-RAN, Xn interface user plane protocol (Release 15), December 2018. [28] 3GPP TS 38.470 NG-RAN, F1 general aspects and principles (Release 15), December 2018. 3GPP TS 38.471 NG-RAN, F1 layer 1 (Release 15), December 2018. 3GPP TS 38.472 NG-RAN, F1 signaling transport (Release 15), December 2018. [31] 3GPP TS 38.473 NG-RAN, F1 application protocol (XnAP) (Release 15), December 2018. [32] 3GPP TS 38.474 NG-RAN, F1 data transport (Release 15), December 2018. 3GPP TS 38.475 NG-RAN, F1 interface user plane protocol (Release 15), December 2018. [34] 3GPP TR 38.801, Study on new radio access technology: radio access architecture and interfaces (Release 14), March 2017. 3GPP TR 38.804, Study on new radio access technology radio interface protocol aspects (Release 14), March 2017. [36] 3GPP TR 38.806, Study of separation of NR control plane (CP) and user plane (UP) for split option 2 (Release 15), December 2017. ETSI Specifications8 [37] ETSI GS NFV-SWA 001, Network functions virtualization (NFV), virtual network functions architecture, December 2014. [38] ETSI GS NFV-IFA 001, Network functions virtualization (NFV), acceleration technologies, report on acceleration technologies & use cases, December 2015. [39] ETSI GS NFV-IFA 002, Network functions virtualization (NFV) Rele