When users are subjected to handover processes (changes in the connection of a device from one base station to another depending on coverage), these must take place in the shortest time possible and under the best conditions. The aim of 5G networks is to reduce these times or latencies, even though the current handover mechanisms that are specified in the standard are not always the best.
Within the 5G-AURA project, this signalling is restructured to reduce latency and provide perfect continuity of communication without altering existing data structures. Based on a small modification in the transmitter, using Software Defined Networking (SDN), information transfer duplication is avoided, and the number of messages is reduced, while the current protocol and data structure is maintained.
The new system, which has given rise to a patent, is designed to restructure the sending of messages without a profound change in mobile phone standards, to enable operation between networks of different generations (2G, 3G, 4G and 5G), and to improve the transmission quality and service.
This will optimise the performance and reduce handover latency by up to 48.83%, total transmission costs by up to 50%, and processing costs by up to 50%. In total, it will reduce the amount of data transferred by up to 10.56%.
This optimisation opens the opportunity to reduce the cost of services for the end users and will facilitate the transition to new networks and mechanisms for suppliers and operators.
The 5G AURA project lasted 4 years (2015-2019) and had a budget of 634,417 euros.