int to emphasize is that any optimization is heavily dependent on the assumptions and the objective function used, SO that it is possible to tailor the approach to the business needs of the operator or operators concerned. An example of this flexibility is the ability to minimize the overall power transmission as illustrated in Section 8.4.2. However, perhaps the most important consideration is the concept of isolation between slices as the principle of slicing is that what happens in one slice shall not negatively affect other slices. With dynamic allocation there could be inter-slice ICI and if this reduces the SINR of an existing user to such an it can no longer meet its QoS requirements, then there is no isolation. However, using an appropriate CAC strategy can prevent new connections requested in one cell affecting users in others, such an approach having the additional ben- efit of being implemented irrespective of the type of resource optimization technique. This guarantees that complete isolation can be obtained but does have the drawback of reducing slightly the overall number of QUs. It is also possible to include controls within the resource allocation optimization and these might, as in the example shown, allow a slightly higher QUR but at the expense of having less than 100% isolation. Overall, it is clear that dynamic resource allocation has many advantages over fixed allo- cation, as noted in the literature, and that the major potential issues with dynamic allocation can be mitigated by using suitable resource allocation and isolation strategies. References Acknowledgments Part of the work leading to the results described here was supported by the Science and Technology Development Fund (Fundo para o Desenvolvimento das Ciências e da Tecnologia) of the Macao SAR under grant numbers 074/2015/A and 272/2017/A. The authors would also like to express their appreciation for the implementation work done by Ka Seng Chou and Ieok Cheng Wong. References 1 Ofcom (2017). The United Kingdom frequency allocatio