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Study of the Fronthaul WDM Applied to the Cloud RAN of 5G-CRAN

Abstract:

In general, everyone involved with the telecommunications sector has reached a consensus that the Radio Access Network of existing 4G mobile networks will not be able to reach the volume of traffic and quality of service required for the 5G networks that are to come. Therefore, it is necessary to ensure that the migration process from the current scenario to 5G is carried out efficiently, eliminating operational limitations and guaranteeing interoperability between the reused infrastructure and the new technology to be implemented. This paper describes the process to be followed for an efficient migration from a 4G LTE to 5G CRAN cellular mobile network, utilizing the Public Telecommunications Company of Ecuador – CNT, as a case study. The proposal is based on the repurposing of the existing transport infrastructure, both for backhaul and fronthaul, and the incorporation of a virtualized and centralized Radio Access Network in the Cloud, which allows for optimal resource management, data processing and response times.