 creation of splinter distributions that would hamper interoperability and adapt- ability as access network technologies continue to evolve. NETCONF and YANG provide a good example of open software approaches. Consistent use of NETCONF and YANG for the management of network devices and the specification of data models plays a critical role in driving interoperability between access technologies and network elements from multiple suppliers. YANG is a data modeling language used to model configuration and state data. These data are manipulated by the network configuration (NETCONF) protocol, using NETCONF remote proce- dure calls and NETCONF notifications. NETCONF and YANG, in and of themselves, provide a strong technology base for driving simpler, more effective, and more robust configuration manage- ment. Additional flexibility, adaptability, and cost savings will be achieved by the definition of open and standard YANG configuration data models for various types of access network elements. The BBF has been actively working to standardize data models for access networks [6]. There are common YANG models (WT-383) that can be used across all technologies, and also specific YANG data models for standard access technologies such as G.fast (WT-355), G.hn (WT-374), and PON (WT-368). Use of these models by network access equipment, as well as continued extension and development of these models as new capabilities and access technologies are defined, will be essential for achieving the benefits of the new access architecture. 11.5 MOBILE WIRELESS ACCESS TECHNOLOGIES Most of the approaches involved in applying the new SDN- and NFV-based access architecture to wireline access networks provide a foundation to apply the same architecture to mobile wire- less access networks. The need for distributed compute resources and for specialized hardware with access SOC components carries over to mobile wireless networks. In addition, mobile wireless access needs other capabilities. The needs of mobile wireless network nodes, such as 