egments, as summa- rized in Table 13.2. The majority of works focus on allocating resources over the RAN, by neglecting the allocation of network resources over the CN segment and the assignment of computation resources. Analytical and/or simulation studies have been mainly performed, while a few works have conducted more practical experimental results. In [3] a set of guidelines is dissected for the design of a network slicing V2X framework. The work advocates the vision of a dedicated slice for V2X services, embraced only recently in 3GPP specifications, as detailed before. A set of four slices are proposed to accommo- date the needs of V2X services, i.e. autonomous driving, tele-operated driving, vehicular infotainment, and vehicle remote diagnostics and management. In [20] a reference network slicing architecture is presented that builds upon the three-layers model, as in [21], illustrated in Figure 13.4. It includes the following layers: the Infrastructure Layer, encompassing user devices, RAN nodes, edge and remote computing, storage and networking resources; the Service Layer, including the Virtual Network Functions (VNFs) and logical network behaviors that realize a slice when chained together; the Business Layer, encompassing the mechanisms and tools to describe the slice behavior at a high level, and to capture the requirements of a given SLA for a vertical segment, whose assurance is tracked by the Operation/Business Support System (OSS/BSS); and the Management and Orchestration (MANO) layer, including all the tools that allow an operator to monitor, orchestrate, and adapt the slice's components to fulfill the negotiated SLAs. Table 13.2 Overview of the main literature works References Non-V2X slices Campolo et al. [3] Zhang et al. [13] Campolo et al. [14] Khan et al. [15] Albonda and Pérez-Romero [16] Ge [17] Chekired et al. [18] Sanchez-Iborra et al. [19] Content Third Manufacturers authorities Municipalities providers parties Business layer OSS/BSS Service layer (R R)AN Slice manager (R)AN Control S