k. There may still be a relationship with a network operator for some EPC functionality, or the network could be self-contained within the factory. 4.6.7 Further Reading The most abundant source of information on small cells is the Small Cell Forum, which has produced numerous documents covering all types of small cell deployments and architec- tures as part of its release program. To date it has published over 125 documents on small cells, including its release 10 set of documents dedicated to 5G. The SCF references used in this chapter can be broadly split into two groups: technical specs relating to FAPI inter- faces; and SCF 048, SCF 082, SCF 222, SCF 223, and reports designed to share knowledge within the small cell ecosystem and remove deployment barriers. From this second set of documents the most notable is SCF 050, which is a periodically updated report based on interviews with network operators and service providers, which identifies the top motiva- tions to adopt small cells and the key barriers. References 3GPP Technical Specification 36.932 (2018). Scenarios and requirements for small cell enhancements for E-UTRA and E-UTRAN. Available at: www.3gpp.org (accessed May 29, 2020). 4.7 Summary 3GPP Technical Specification 38.401 (2019). NG-RAN; Architecture description. Available at: www.3gpp.org (accessed May 29, 2020). 3GPP Technical Specification 38.410 (2019).NG-RAN; NG general aspects and principles. Available at: www.3gpp.org (accessed May 29, 2020) 3GPP Technical Specification 38.470 (2019).NG-RAN; F1 general aspects and principles. Available at: www.3gpp.org (accessed May 29, 2020) 3GPP Technical Specification 38.801 (2019). Study on new radio access technology: Radio access architecture and interfaces. Available at: www.3gpp.org (accessed May 29, 2020). 3GPP Technical Specification 38.420 (2019).X1 general aspects and principles. Available at: www.3gpp.org (accessed May 29, 2020). BBF TR-196 (November 2011). Femto Access Point Service Data Model. TR-196, 2. ETSI-MEC (June 2018). MEC in 5G network