Sunday, 29 July 2018

Do We know that 5G is about 10Tbps/Km2 volume density?

The emergence of smallcells, being the enablers, has taken a mandatory part in network architecture. From an operator point of view, smallcells were taken in network deployment scenarios for better spectrum re-usability and drawing more bits per unit of frequency. 

The main forces for emergence of smallcells were capacity enhancements, coverage solutions, and spectrum efficiency through its re-usability. Within 4G itself, the technology has evolved to support the densification of smallcell networks through evolved interference management techniques like eICIC or FeICIC, self-organizing techniques know as SON etc, and also the SON advancement techniques based on predictive analysis like robust mobility etc.

5G is towards ultra-dense networks to cater to the need of high data volume as targeted in the range of 10Tbps/Km2. Highly dense smallcells, better to say here access point or AP, covering a cell area in the range of only few meters, would be exaggerating the challenges of interference management and robust mobility management. 

The techniques used for densification at LTE advance level, would not be fitting, rather it would be handled through novel techniques like Cell virtualization for robust and efficient mobility, and also for interference management through resource distribution.

The formation of virtual cells is a dynamic process here, and would be user centric. Each virtual cell will be constituted of a master AP and one or more slave APs. The master will be at the helm of control at each virtual cell and would be coordinating to each other, i.e. coordination between masters of each virtual cells for handover etc. 

Also the channels used for coordination among master APs would again be on the self-created backhaul over the air only. The techniques like beam forming & nulling, Massive MiMo,mmWave for better penetration and higher throughput would take their course in the overall ultra-densification of networks.