eys Theme Scope and contributions Issues 5G, RAN A comprehensive The various 5G RAN architectures comparison between the presented in [3] are based on C-RAN that current and previous RAN separates the 5G networks into RRH and architectures including BBU. However, in the NG-RAN provided in-depth study for C-RAN. by 3GPP and O-RAN alliance, the BBU is It studied the 5G enabling separated into DU and CU with several technologies such as SDN, split options. These modifications on the NFV, and network slicing NG-RAN have not been considered in [3]. Moreover, it presented the E2E 5G architecture for the mobile operators or public networks only. However, the E2E architecture and solutions for the enterprise's private networks have not been discussed in [3]. Meanwhile, other edge computing paradigms, e.g., MEC, have not been explored. Furthermore, an in-depth study for the research works to overcome the several challenges on SDN, NFV, and network slicing has not been addressed 5G, IoT It studied the IoT E2E The E2E architecture in [10] employed the architecture considering LPWANs technologies to connect the 5G and LPWANs sensor layer with the network layer, while technologies. It classified the 5G technology was utilized to connect the E2E 5G IoT the network layer with the communication architecture into sensors, layer. However, the E2E architecture network, communication, studied in [10] does not leverage the architectural, and capabilities of the 5G eco-system. For application layers. Besides, instance, the LPWANs technologies it provided a comparative cannot satisfy the requirements of URLLC study for the LPWANs UCs for a latency close to zero. In technologies and addition, the E2E architecture is highlighted some IoT UCs cloud-based that does not consider edge and challenges such as computing paradigms for real-time security processing and low latency services. Moreover, the enabling technologies for 5G technology have not been discussed in Edge com- It provided a Edge computing paradigms, SDN, and puting, comprehens