 Networking Conference (WCNC), Marrakesh, Morocco (15-18 April 2019). IEEE. 56 Liu, Y., Yang, X.X., Chou, K.S.K.S., and Cuthbert, L. (2017). Cognitive radio using spectrum-sharing and power minimisation. In: 18th IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks, WoWMoM 2017 - Conference, 1-6. IEEE. Access Control and Handoff Policy Design for RAN Slicing Yao Sun¹, Lei Zhang1, Gang Feng2 and Muhammad Ali Imran1 1 University of Glasgow, James Watt School of Engineering, UK 2 University of Electronic Science and Technology of China, National Key Laboratory on Communications, China In radio access networks (RANs) slicing, resource management (including access control and handoff policy design) should be exploited to improve network efficiency and flexibility while meeting quality of service (QoS) requirements. However, the hierarchical network architecture, diversified use cases, as well as various QoS requirements make resource man- agement a challenging issue. In this chapter, we propose to solve two problems: user access control and mobile user handoff policy design. Let us start with the discussions on user access control. 9.1 A Framework of User Access Control for RAN Slicing To take the benefits of network slicing technology, access control is of paramount impor- tance to be investigated in network slice (NS)-based networks. An appropriate access control scheme can improve both network and users performance by flexibly allocating inter-/intra NS resources. Moreover, driven by the explosive growth of wireless data traffic, improving resource utilization is crucial for 5G-and-beyond communication systems [1-4]. Therefore, from both network performance and resource utilization perspectives, it is imperative to develop efficient access control schemes for radio access network (RAN) slicing. In RAN slicing, user equipment (UE) access control and resource allocation are funda- mentally different from that in conventional mobile networks due to the introduction of NS [5, 6]. First, f