rs to cloud computing- based architecture for RAN and implements Radio Access Technology (RAT). RAN also connects the Core Network (CN) with User Equipment (UE). For 5G, one of the goals is to leverage public cloud infrastructure for RAN, which is already used in the mainstream IT world, and future-proof it for 5G. Where the cloud has too-high latency, an edge cloud is used. C-RAN represents an architectural evolution over the following areas: An all-in-one macro base station for 1G and 2G networks A distributed base station for the 3G network Historically, a RAN's radio and baseband processing capability has resided in a base station. In C-RAN, we decouple the base station capabilities and processing power into Remote Radio Heads (RRHs), which exist in a distributed fashion at the cell site and the central Baseband Units (BBUs). The connectivity between the BBU and the RRH is managed via the fronthaul network. Over time, the Common Public Radio Interface (CPRI) standards have evolved. They are standards for interfacing the Radio Equipment Control (REC) with radio equipment. A group of companies, including Ericsson AB, Nokia, NEC Corporation, and Huawei Technologies, are working to refine the CPRI standards. C-RAN takes advantage of the latest CPRI standards. In addition, C-RAN uses the benefits of low-cost Coarse or Dense Wavelength Division Multiplexing (CWDM/DWDM) technology. Finally, it uses millimeter Wave nWave) to enable the transmission of baseband signals over long distances. This allows C-RAN to deploy centralized base stations on a massive scale. Furthermore, C-RAN uses the data center network technology that is already well adopted in enterprise IT. This brings the following benefits: Lower cost/TCO Improved reliability 5G Infrastructure Design Lower latency A high-bandwidth interconnect network in BBU pooling Software virtualization in a vendor-agnostic manner Dynamic resource sharing Let us also look at the gradual move from C-RAN to Virtual-RAN (vRAN) and the adoption of the term C-RAN. Under vRAN,