December 20, 2018

Modelling the 5G core for low latency scenarios

In mobile communication, simply put, latency is the time user traffic takes to travel between the user mobile smartphone and the service in the network (e.g., a video streaming server). Dependent of the type of application, the less is this time the better is the experience from the user point of view: what if you have to wait 10 seconds for your video to start? You would probably not appreciate […]
December 5, 2018

Splitting Network Functions in 5G

5G networks are expected to support various applications with a high flexibility meeting diversity of requirements in terms of latency, data rates and massive connectivity.   A 5G network function (NF) supply a particular capability to support communication through a 5G network. NFs are normally virtualized, but some functions may need addition of more specialized hardware. NFs can be the functions that are common functions which are essential for all […]
September 7, 2018

Inside the 5G core: current status and research opportunities

3GPP is the organization responsible for the specification of the 5G architecture and its operation, which is currently arrived at Release 15. [1] The entire 5G architecture  can be divided into an access network (AN), composed of all the physical apparatus and logical elements needed for radio connectivity to user equipment (UE – e.g., Smartphones, IoT devices, vehicles, etc.), and the 5G core (5GC), which manages the user end-to-end connection […]
September 7, 2018

Control-/User Plane Separation (CUPS) in mobile networks

Control-/User Plane Separation (CUPS) [1] in mobile networks refer to the complete separation between control plane functions (which take care of the user connection management, as well as defining QoS policies, performing user authentication, etc.) and user plane functions (which deal with data traffic forwarding). It was first introduced by 3GPP’s Release 14 at packet data gateway level, concerning the 4G Evolved Packet Core (mobile core for 4G networks) and […]
September 3, 2018

Machine learning: paving the way for future Mobile Networks

The unprecedented surge in data traffic experienced over the last decade has stretched the telecommunications networks to their capacity. According to Cisco’s forecast (included in the Cisco Visual Networking Index: Forecast and Methodology report), global IP traffic will have increased 127-fold from 2005 to 2021. This demand rise will even be exacerbated for wireless and mobile traffic, which is expected to account for more than 60% of the total IP […]