Next-generation mobile technologies are the enablers for meeting the variable specific requirements of the public safety (PS) community. In particular, due to the development of commercially deployed 5G networks, PS providers look for ways to implement related solutions upon such infrastructures, potentially in a shared use with existing commercial networks. In particular, LTE and 5G NR networks are rapidly gaining recognition as an all-inclusive critical communications platform for the delivery of both mission and business critical applications. Within this scope, we take into account the innovative architectural approach that has been proposed by the 5G ESSENCE project, addressing the paradigms of edge computing and small cell as-a-service that has been realised via a cloud-enabled small cell infrastructure leveraging multi-access technologies in 5G, where we propose a dedicated PS use case, able to offer a mission critical push-to-talk service as well as a Chat and Localisation service. Each one of these services is associated to a dedicated network slice within the scope of the corresponding fundamental 5G ESSENCE architecture and both services are provided via suitable VNFs, thus offering great flexibility to serve PS needs together. We further discuss the overall scenario deployment with the related technical enablers and the proposed functionalities, per case. The corresponding end-to-end slicing makes possible to allocate both radio and cloud resources to the involved critical actors, in an automated and elastic way.

下一代移动技术可以满足公共安全（PS）社区不断变化的特定要求。特别是，由于商业部署的5G网络的发展，PS提供商寻求在此类基础架构上实现相关解决方案的方法，有可能与现有的商业网络共享使用。尤其是，LTE和5G NR网络正在迅速获得公认，它是用于交付任务和业务关键型应用程序的全包关键型通信平台。在此范围内，我们考虑了5G ESSENCE项目提出的创新架构方法，解决边缘计算和小型蜂窝即服务的范例，该范例已通过利用支持5G的多路访问技术的支持云的小型蜂窝基础架构实现，我们在此提出了专用的PS用例，能够提供关键任务推动力通话服务以及聊天和本地化服务。这些服务中的每一项都在相应的基本5G ESSENCE体系结构的范围内与专用网络切片相关联，并且这两种服务都是通过适当的VNF提供的，从而提供了极大的灵活性来一起满足PS需求。我们将与相关的技术支持因素和拟议的功能进一步讨论整体方案的部署，这些服务中的每一项都在相应的基本5G ESSENCE体系结构的范围内与专用网络切片相关联，并且这两种服务都是通过适当的VNF提供的，从而提供了极大的灵活性来一起满足PS需求。我们将与相关的技术支持因素和拟议的功能进一步讨论整体方案的部署，这些服务中的每一项都在相应的基本5G ESSENCE体系结构的范围内与专用网络切片相关联，并且这两种服务都是通过适当的VNF提供的，从而提供了极大的灵活性来一起满足PS需求。我们将与相关的技术支持因素和拟议的功能进一步讨论整体方案的部署，每个案例。相应的端到端切片使以自动化和弹性方式将无线电和云资源分配给相关的关键参与者成为可能。