14 Dynamic Connectivity Services in Support of Future Mobile Networks

Adrián Asensio1, Luis Miguel Contreras2, Marc Ruiz1 and Luis Velasco1

1 Universitat Politècnica de Catalunya, Barcelona, Spain

2 Telefonica Investigación y Desarrollo, Madrid, Spain

Aiming at satisfying in a cost‐effective manner the forecast traffic growth that future mobile networks will need to support, traditional distributed Radio Access Networks (RANs) are evolving toward centralized architectures. Specifically, the Cloud‐RAN (C‐RAN) architecture has shown that it can alleviate to some extent the ever increasing Total Cost of Ownership (TCO) in mobile networks. The current trend in C‐RAN is to separate Remote Radio Heads (RRHs) with radio frequency (RF) functions and Baseband Units (BBUs) gathering baseband processing. This functional split allows keeping RF modules close to the antennas while placing BBUs at centralized locations, so they can be shared among different sites and even be virtualized. However, some issues still need to be addressed in future mobile networks, especially due to the dynamicity of services and the strict constraints imposed by their interfaces. In fact, connectivity reconfiguration for X2 and S1 backhaul interfaces needs to be provided as an all‐or‐nothing request to enable mobile resources reconfiguration in a geographical area. In view of that, we propose dynamic Customer Virtual Network (CVN) reconfiguration to be supported in both metro and core network segments. ...

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